dien bien eia sua

H thng thot nc, thu gom v x l nc thi Thanh ph in Bin Phu Tinh in Bin

MC LC Trang

MC LC..................................................................................................1 M U....................................................................................................61. XUT X CA D N..........................................................................................6 2.C S PHP L LP BO CO NH GI TC NG MI TRNG 7 2.1. C s ti liu php l.........................................................................................7 2.2 C s ti liu k thut........................................................................................8 3. PHNG PHP P DNG TRONG QU TRNH TM................................10 * Phng php tham vn cng ng.....................................................................10 * Phng php thng k: ......................................................................................11 * Phng php ly mu ngoi hin trng v phn tch trong phng th nghim theo cc quy nh ca TCVN: ...................................................................11 4. T CHC THC HIN TM............................................................................11 4.1. C quan t vn lp Bo co nh gi tc ng mi trng.........................11 4.2. T chc thc hin............................................................................................12

CHNG I. M T TM TT D N..............................................141.1. TN D N........................................................................................................14 1.2. T CHC QUN L D N...........................................................................14 1.3. V TR A L ..................................................................................................14 1.4. NI DUNG CA D N...................................................................................15 1.4.1. Loi hnh h thng thot nc ....................................................................15 1.4.2. Xy dng h thng thot nc ma............................................................17 1.4.2.1. S t chc thot nc ma..............................................................17 1.4.2.2 Phn chia lu vc thot nc ma.......................................................17 1.4.2.3. Tnh ton mng li nc ma............................................................18 1.4.2.4. Khi lng cc hng mc thot nc ma...........................................19 1.4.3. Xy dng h thng thot nc thi............................................................19 1.4.3.1 S thot nc thi.............................................................................19 1.4.3.2. Lu vc thot nc thi........................................................................20 1.4.3.3. Lu lng nc thi.............................................................................20 1.4.3.4. Cc hng mc u t cho h thng thot nc thi............................23 1.4.4. Cc loi my mc thit b phc v d n....................................................30LAVIC 2009 Bo co nh gi Tc ng Mi trng

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H thng thot nc, thu gom v x l nc thi thanh ph in Bin Phu Tnh in Bin

1.4.5 K hoch thc hin........................................................................................31 1.4.6. Tng mc u t.........................................................................................32 1.4.7. Mc tiu ca d n......................................................................................32 1.4.8. ngha ca d n........................................................................................33

CHNG II: ...................................................................................................................34 IU KIN T NHIN, MI TRNG V KINH T- X HI...342.1 IU KIN T NHIN V MI TRNG...................................................34 2.1.1. iu kin v a l, a cht.........................................................................34 2.1.1.1.V tr a l..............................................................................................34 2.1.1.2. c im a hnh..................................................................................34 2.1.1.3. c im ia cht cng trinh:...............................................................34 2.1.2. Kh tng .....................................................................................................34 2.1.3. a cht thy vn..........................................................................................35 2.1.4. Tai nguyn thin nhin.................................................................................36 2.1.4.1. Tai nguyn nc:...................................................................................36 2.1.4.2. Tai nguyn rng va t rng:................................................................36 2.1.4.3. Tai nguyn khoang san:.........................................................................36 2.1.5. Tai nguyn du lich.........................................................................................37 2.1.5.1. Tai nguyn du lich lich s:....................................................................37 2.1.5.2. Tai nguyn du lich sinh thai t nhin:..................................................37 2.1.5.3. Tai nguyn du lich vn hoa:..................................................................37 2.2. C IM XA HI .........................................................................................37 2.2.1. Tinh hinh phat trin kinh t.........................................................................37 2.2.1.1. Thng mai dich vu - du lich:............................................................38 2.2.1.2. Cng nghip tiu thu cng nghip va xy dng:...............................38 2.2.1.3. Phat trin Nng Lm nghip..............................................................38 2.2.1.4. Giao thng vn tai..................................................................................39 2.2.2 Tinh hinh phat trin xa hi...........................................................................40 2.2.2.1. Dn s....................................................................................................40 2.2.2.2. Cac vn ngheo oi va thu nhp........................................................40 2.2.2.3. Y t..........................................................................................................40LAVIC - 2009Bao cao anh gia tac ng Mi trng

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2.2.2.4. Giao duc.................................................................................................41 2.2.2.5 An ninh trt t........................................................................................41 2.3. HIN TRANG H THNG CP NC.........................................................42 2.4. HIN TRANG H THNG THOAT NC...................................................43 2.4.1. Hin trang h thng thoat nc ma:.........................................................43 2.4.2. Hin trang h thng thoat nc thai:..........................................................44 2.5. HIN TRANG RAC THAI VA V SINH MI TRNG: ............................44 2.6. KT QU PHN TCH CHT LNG MI TRNG.............................45 2.6.1. Hin trng mi trng khng kh ti khu vc d n................................46 2.6.2. Hin trng mi trng nc mt...............................................................49 2.6.3 Hin trng mi trng nc ngm..............................................................53 2.6.4 Hin trng mi trng nc thi.................................................................55 2.6.5. Hin trng phn tch thnh phn bn t:................................................56 KT LUN CHUNG.............................................................................................59

CHNG III NH GI TC NG MI TRNG.............................................613.1. NGUN, I TNG, QUY M GY TC NG....................................61 3.1.1. Ngun gy tac ng.....................................................................................61 3.1.1.1. Ngun gy tac ng trong qua trinh giai phong mt bng va thi cng xy dng .............................................................................................................61 3.1.1.2. Ngun gy tac ng trong qua trinh vn hanh h thng thoat nc...61 3.1.2. i tng gy tc ng................................................................................62 3.1.3. Quy m b tc ng ca d n:....................................................................64 3.2. NH GI TC NG CNG NGH LA CHN ...................................64 3.2.1. H thng thot nc ma v nc thi..................................................64 3.2.2. Trm bm nc thi.................................................................................65 3.2.3. Trm x l nc thi................................................................................65 3.3. NH GI TC NG N CC THNH PHN MI TRNG .....68 3.3.1. Tc ng n mi trng khng kh........................................................75 3.3.2. Tc ng n mi trng nc................................................................84 3.3.3. Tc ng n mi trng t...................................................................88 3.3.4. Tc ng ca cht thi rn- CTR.............................................................90 3.3.5. Tc ng n h sinh thi, cnh quan.....................................................92 3.3.6. Tc ng n i sng kinh t- x hi.....................................................95LAVIC - 2009Bao cao anh gia tac ng Mi trng

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3.4. NHN XT V MC CHI TIT , TIN CY CA CC NH GI...............................................................................................................98

CHNG IV BIN PHP GIM THIU TC NG XU, PHNG NGA V NG PH S C MI TRNG.....................................................1014.1. CC BIN PHP GIM THIU GIAI ON GII PHNG MT BNG ...................................................................................................................................101 4.2. CC BIN PHP GIM THIU TRONG QU TRNH THI CNG CC HNG MC CNG TRNH..................................................................................103 4.2.1. Cac bin phap chung .................................................................................103 4.2.1. Cac bin phap giam thiu nhim khng khi va ting n .....................105 4.2.1.1. Cac bin phap ngn nga va gim thiu nhim bui........................105 4.2.1.2. Kim soat va bin phap giam thiu nhim khi sinh ra trong thi cng: ............................................................................................................................106 4.2.1.3. Kim soat va cac bin phap giam thiu nhim ting n va rung sinh ra trong thi cng: ..............................................................................................107 4.2.3. Cac bin phap gim thiu nhim nc ..................................................107 4.2.4. Cac bin phap gim thiu cc tc ng n mi trng t ..................108 4.2.5. Cac bin phap gim thiu nhim cht thai rn ...................................109 4.2.6. Gim thiu cc tc ng n cnh quan ..................................................109 4.2.7. Gim thiu tc ng n giao thng v ngp lt trong qu trnh thi cng ....................................................................................................................109 4.2.8. Gim thiu tc ng n sc kho v i sng kinh t- x hi ............111 4.3. BIN PHP GIM THIU NHIM TRONG GIAI ON VN HNH ...................................................................................................................................112 4.3.1. Gim thiu nhim mi trng t h thng thu gom ...........................112 4.3.2. Gim thiu nhim mi trng t khu vc tram x ly nc thai ........113 4.3.2.1. Giam thiu nhim mi trng trong trng hp h thng thoat nc gp s c ky thut..............................................................................................113 4.3.2.2. Giam thiu nhim mi trng khng khi........................................114 4.3.2.3. Giam thiu nhim mi trng nc.................................................117 4.3.2.4. Cac bin phap giam thiu nhim mi trng t.............................118 4.3.2.4. Cac bin phap giam thiu nhim do bun va cht thai rn..............118 4.3.4. Gim cc tc ng n h sinh thi v kinh t x hi..............................118 4.4. BIN PHP PHNG CHNG CHAY N, PHONG CHNG THIN TAI ...................................................................................................................................119LAVIC - 2009Bao cao anh gia tac ng Mi trng

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4.4.1. Bin phap phong chng chay n................................................................119 4.4.2. Bin phap phong chng thin tai...............................................................119 4.5. V SINH, AN TON LAO NG..................................................................120 4.6. BIN PHP TUYN TRUYN GIO DC................................................120

CHNG V CHNG TRNH QUN L V GIM ST MI TRNG......1235.1. CHNG TRNH QUN L MI TRNG.............................................123 5.1.1. Giai oan chun bi......................................................................................123 6.1.2. Giai oan xy dng....................................................................................123 5.1.3. Giai oan vn hanh....................................................................................124 5.2. CHNG TRNH GIM ST MI TRNG (GSMT)...........................126 5.3. CC CHI TIU GIM ST MI TRNG CU TH ...............................127 5.3.1. Giam sat cht lng khng khi ( CLKK) va ting n ............................127 5.3.2. Giam sat cht lng nc ........................................................................129 5.3.3. Giam sat cht lng rac thai va bun phat sinh .......................................130

CHNG VI THAM VN KIN CNG NG..................................................1336.1. TNH CN THIT CA VIC THAM VN CNG NG......................133 6.2. MC TIU CA THAM VN CNG NG .............................................133 6.3. NI DUNG C TH CA THAM VN KIN CNG NG...............135 6.4. PHNG THC V PHNG PHP THAM VN CNG NG.......135 6.5. T CHC THC HIN THAM VN CNG NG.................................137 6.6. KT QU THAM VN CNG NG..........................................................137 6.6.1. Tng hp cac y kin tham vn cng ng.................................................137 6.6.1.1. S cn thit cua d an: .......................................................................137 6.6.1.2. V cac bin phap bao v mi trng cua d an : ...............................138 6.6.1.3. Tom tt kt qua cac cuc hop va phong vn : ...................................138 6.6.2. Kt lun.......................................................................................................138

KT LUN V KIN NGH...............................................................140I. KT LUN...........................................................................................................141 II. KIN NGH........................................................................................................143

PH LC...............................................................................................144

LAVIC - 2009

Bao cao anh gia tac ng Mi trng

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M U 1. XUT X CA D N in Bin l mt tnh min ni bin gii nm pha Ty Bc Vit Nam. Tnh mi c chia tch ngy 01/01/2004 theo Ngh quyt s 22 k hp th IV Quc hi kha XI. Vi din tch t nhin l: 9.554,107 km2, c ta a l 20 o54 22o33 v Bc v 102o10 103o36 kinh ng. in Bin Ph l thnh ph tnh l tnh in Bin Ty Bc Vit Nam. Thnh ph nm trong khu thung lng Mng Thanh vi chiu di khong 20 km v chiu rng 6 km. Chnh v iu ny m c khi n cn c gi l "lng cho in Bin". in Bin Ph c xem l mt thnh ph nm bin gii v ch cch bin gii vi Lo khong 35 km. in Bin Ph cch H Ni 474 km theo quc l 6 v 279. Thnh ph in Bin Ph pha ng nam gip huyn in Bin ng, cc pha cn li gip huyn in Bin. Thnh ph in Bin Ph c sng Nm Rm chy qua, Thnh ph cn l u mi giao thng quan trng ca 2 tuyn quc l : Quc l 279 ni Thnh ph in Bin vi th trn Tun Gio pha ng v ni vi nc Lo pha Ty qua Ca khu Ty Trang. Quc l 12 ni Thnh ph in Bin Ph vi th x Lai Chu ng cp 4 min ni. Thnh ph in Bin Ph l thnh ph thuc khu vc min ni pha Bc, l trung tm hnh chnh kinh t ca tnh in Bin. Hin thnh ph ang l th loi III ang phn u l th loi II trong tng lai. Theo iu chnh quy hoch chung ca Thnh ph cn p ng cc yu cu pht trin l th loi II trong tng lai iu hon ton ph hp vi xu hng pht trin chung ca c nc v chin lc pht trin kinh t chung ca tnh in Bin Tuy nhin cc cng trnh v thot nc, thu gom v x l nc thi hin cha c u t xy dng gy nh hng n mi trng v cuc sng ca ngi dn trong khu vc d n. H thng thot nc chung hin nay c xy dng t nhng nm 1997 v 2000, khng c no vt thng xuyn nn h thng thot nc hin khng p ng c kh nng tiu thot nc. Vo ma ma xut hin tnh trng ngp ng, mt v sinh xy ra trn a bn thnh ph. H thng thot nc chung, nc ma v nc thi thot chung vo cng mt mng li cng, x trc tip xung sng Nm Rm. Do khng c h thng tch nc thi, thu gom nc thi x l, kh trung gy nhim mi trng nghim trong ng thi nc sng Nm Rm b nhim, gy mi hi thi, kh chu cho khu vc xung quanh c bit l khi khng c ma hoc khi khng c thau ra t nc ca cc sng nhnh vo. nhim mi trng do nc thi ti thnh ph in Bin Ph a v ang tr thnh mt vn nghim trng, nh hng ln n mi trng sng, mi trng t nhin v nh hng khng nh ti v p cnh quan ca thnh ph vn c coi l trong lnh, c bit l trong bi cnh hin nay, khi m vn mi trng ang l miLAVIC - 2009Bao cao anh gia tac ng Mi trng

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quan tm ca ton nhn loi. Trong tng lai thanh ph in Bin Phu c cng nhn la thi loai II, tng xng vi vi tri chin lc cua minh, thanh ph cn c xy dng h thng thu gom va x ly nc thai, cai tao, nao vet va ke mi mt s mng thoat nc chinh cua thanh ph. Vi cac ly do trn, D an u t xy dng h thng thoat nc, thu gom va x ly nc thai thanh ph in Bin Phu se ap ng nhu cu va s mong moi cua nhn dn ia phng cung tt cac cac nghanh cac cp, cac nganh, nhm cai thin cac iu kin v sinh mi trng, am bao cho s phat trin bn vng cua Thanh ph in Bin Phu noi ring, va khu vc Ty Bc noi chung. 2.C S PHP L LP BO CO NH GI TC NG MI TRNG 2.1. C s ti liu php l - Lut bo v mi trng s 52/2005/QH 11 ngy 29/11/2005 ca Quc hi, nc Cng ho x hi ch ngha Vit Nam. - Ngh nh s 80 /2006/N- CP ngy 09/06/2006 ca Chnh Ph v vic quy nh chi tit v hng dn thi hnh chi tit mt s iu ca lut Bo v mi trng. - Ngh nh s: 21/2008/N-CP ngy 28/02/2008 v sa i, b sung mt s iu ca Ngh nh s 80/2006/N-CP ngy 09/08/2006 ca Chnh ph v vic quy nh chi tit v hng dn thi hnh mt s iu ca lut Bo v Mi trng. - Thng t 05/TT/BTNMT ngy 08/12/2008 ca B Ti nguyn Mi trng v hng dn chi tit h thng mt s ni dung v nh gi tc ng mi trng chin lc, nh gi tc ng mi trng (TM) v cam kt bo v mi trng ; - Ch th s 487/TTg ngy 30/6/1996 ca Th tng Chnh Ph: Tng cng qun l Nh nc i vi ngun nc. - Ngh nh 209/2004/N-CP ngy 16/12/2004 ca Chnh Ph v qun l cht lng cng trnh xy dng - Ngh nh s 16/2005/N-CP ngy 07 thng 02 nm 2005 ca Chnh Ph v qun l d n u t xy dng cng trnh. - Ngh nh s 112/2006/N-CP ngy 29 thng 09 nm 2006 ca Chnh Ph v sa i b sung mt s iu ca Ngh nh s 16/2005/N-CP v qun l d n u t xy dng cng trnh. - Ngh nh s 88/2007/N-CP ngy 28 thng 05 nm 2007 v thot nc th v khu cng nghip. - Quyt nh s 13/2007/Q-BXD ngy 18/12/2006 ca B Ti Nguyn Mi trng v vic bt buc p dng tiu chun Vit Nam v Mi trng.

LAVIC - 2009


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- Ngh nh s 04/2007/N-CP ca Chnh ph: Sa i b sung mt s iu ca Ngh nh s 67/2003/CP ngy 03/06/2003 ca Chnh ph v ph Bo v Mi trng i vi nc thi. - Quyt nh s 1751/2005/BXD- VP ngy 14/08/2007 ca B Xy dng v vic ban hnh nh mc chi ph qun l d n v t vn u t xy dng cng trnh. - Lut xy dng s 16/2003/QH11 ngy 26 thng 11 nm 2003 ca Quc hi nc Cng ho x hi ch ngha Vit Nam. - Lut Tai nguyn nc c Quc hi nc CHXHCNVN thng qua ngay 20/5/1998 va Chu tich nc ky sc lnh cng b vao ngay 1/6/1998. - Quyt inh s 18/2007/QDD-UBND ngay 2 thang 10 nm 2007 cua UBND tinh in Bin v vic Ban hanh quy ch bao v mi trng trn ia ban tinh in Bin. - Quyt inh s 19/2007/QDD-UBND ngay 2 thang 10 nm 2007 cua UBND tinh in Bin v vic Ban hanh Quy ch quan ly s dung tai nguyn nc trn ia ban tinh in Bin. - Nghi inh s 148/NDD-CP ngay 27 thang 7 nm 2007 cua Chinh phu v vic cp phep thm do khai thac, s dung tai nguyn nc va xa nc vao ngun nc. - Lut t ai nm 2003 co hiu lc thi hanh t ngay 01/7/2004. - Nghi inh chinh phu s 197/2004/NDD-CP ngay 03/12/2004 v vic Bi thng, h tr va tai inh c khi nha nc thu hi t. 2.2 C s ti liu k thut - Quy chun xy dng Vit Nam tp 1, 2, 3 ban hnh theo quyt nh s 682/BXD- CSXD ngy 14/12/1996 ca B trng B xy dng; - Quy chun Vit Nam QCVN08:2008/BTNMTv cht lng nc,cht lng nc mt; - Tiu chun ngnh 20 TCN-51-84: Tiu chun thot nc mng li bn ngoi cng trnh; - Tiu chun Vit Nam TCVN 6772- 2000: Cht lng nc- Nc thi sinh hot- gii hn nhim cho php; - Tiu chun Vit Nam TCVN 7222: 2002: Yu cu chung v mi trng i vi cc trm x l nc thi sinh hot tp trung; - Tiu chun Vit Nam TCVN 5945- 2005: Nc thi cng nghip v tiu chun thi; - Cn c thng bao s 869/TTg-QHQT ngay 02/7/2007 cua TT Chinh Phu v vic ph duyt danh muc d an s dung vn vay u ai cua Phn Lan.

LAVIC - 2009


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- Bo co kinh t x hi ca UBND thanh ph in Bin Phu va cac tai liu v dn s, tnh trng y t, sc kho trong khu vc d n; - Cc ti liu v iu kin t nhin thanh ph in Bin Phu va khu vc nghin cu . - Cac vn ban, tai liu, s liu iu tra hin trang mi nht v: Cp nc, bu in, in lc va cac vn lin quan do ia phng cung cp.

LAVIC - 2009


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Bng i. Danh mc cc d n phi lp bo co TM hoc Bn cam kt bo v mi trng. STT 1. Loi d n Quy m iu kin bt buc

D n khai thc Cng sut khai thc t 10.000 Lp TM nc di t m3 nc/ngy m tr ln Cng sut khai thc di 10.000 Lp bn cam kt Bo m3 nc/ngy v mi trng.

2.

D n khai thc Cng sut khai thc t 50.000 m3 Lp TM nc mt nc/ngy m tr ln. Cng sut khai thc di 50.000 Lp bn cam kt Bo m3 /ng v mi trng.

3.

D n xy dng Cng sut thit k 1.000 m3 h thng x l nc/ngy m tr ln Lp TM. nc thi sinh hot tp trung. Cng sut thit k nh 1.000 m3 Lp bn cam kt Bo nc/ngy m. v mi trng.

Cn c Lut bo v mi trng v Thng t 05/TT/BTNMT v vic quy nh chi tit v hng dn thi hnh mt s iu lut ca Lut Bo v mi trng v nh gi tc ng mi trng th d n Xy dng h thng thot nc, thu gom v x l nc thi Thanh ph in Bin Phu Tinh in Bin phi lp bo co nh gi tc ng mi trng (TM) nh gi mt cch tng qut nhng tc ng ca d n ti mi trng t nhin v i sng x hi ca nhn dn Thanh ph, t c nhng bin php gim thiu trong tng giai on khi d n c thc thi. 3. PHNG PHP P DNG TRONG QU TRNH TM * Phng php tham vn cng ng Ph bin thng tin: - Hot ng tham vn cng ng nhm ph bin cc thng tin c lin quan n d n cho cng ng khu vc thc hin d n. c bit l nhng ngi b nh hng trc tip bi vic xy dng v trong qu trnh vn hnh d n sau ny. Thu thp kin ca cng ng: - V mc quan tm v s ng h ca cng ng i vi vic thc hin d n cng nh cc phng n k thut c s dng. - Lng nghe kin ca ngi dn v nhng tc ng gy ra do d n: Tc ng n mi trng, kinh t v nhng thi quen sinh hot trong cuc sng.LAVIC - 2009Bao cao anh gia tac ng Mi trng -

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- Ghi nhn nhng xut t pha cng ng v lnh o a phng trong vic gii quyt cc vn v mi trng v li ch cho nhn dn khu vc thc hin d n v nhng ngi b nh hng trc tip. * Phng php thng k: - Nhm thu thp ti liu, thng tin k thut v x l s liu v hin trng khu vc trin khai d n. - Thu thp ti liu, thng tin v x l s liu c v iu kin t nhin (kh hu, a cht, thu vn), kinh t x hi khu vc thc hin d n. * Phng php ly mu ngoi hin trng v phn tch trong phng th nghim theo cc quy nh ca TCVN: - Kho st cht lng nc, thnh phn nc ca khu vc thc hin d n v mi trng xung quanh; - Kho st cht lng khng kh ti khu vc thc hin d n v mi trng xung quanh; Kho st mc n, rung ti khu vc thc hin d n v mi trng xung quanh. - Kho st mi trng t ti khu vc thc hin d n; - Kho st hin trng h sinh thi khu vc thc hin d n v mi trng xung quanh. * Phng php iu tra kinh t - x hi - c s dng trong qu trnh phng vn cc cp Chnh quyn, cc lnh o v nhn dn a phng ti ni thc hin d n. * Phng php so snh - Dng nh gi cc tc ng trn c s cc tiu chun mi trng Vit Nam (TCVN). 4. T CHC THC HIN TM 4.1. C quan t vn lp Bo co nh gi tc ng mi trng Cng ty C phn u t, Cng ngh Mi trng va Ha tng Ky thut Lac Vit ( LAVIC): Ngi i din: Chc v: a ch: in thoi: Email: ng Nguyn Phan Anh Gim c S 9 ng Thanh, Qun Hoan Kim, HN (043) 8288952 [email protected]

LAVIC - 2009

Bao cao anh gia tac ng Mi trng -

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4.2. T chc thc hin Bo co nh gi tc ng mi trng (TM) cho d n u t Xy dng h thng thot nc, thu gom v x l nc thi thanh ph in Bin Phu, Tnh in Bin, c thc hin vi s ch tr ca cc cn b Cng ty C phn u t, Cng ngh Mi trng va Ha tng ky thut Lac Vit ( LAVIC). Trong qu trnh lp Bo co, c s phi hp ca cc cn b thuc trung tm cng ngh x ly mi trng B Quc phong. Ni dung ch yu nh sau: 1- Kho st, o c, nh gi cht lng hin trng mi trng khu vc thc hin d n. y l s liu nn so snh, nh gi tc ng ca d n n mi trng trong cc qu trnh: chun b thi cng, qu trnh thi cng cc hng mc cng trnh ca d n cng nh trong qu trnh vn hnh d n sau ny. 2- Phn tch, nh gi tc ng mi trng ca D n, d bo nhng tc ng c li v c hi, trc tip v gin tip, trc mt v lu di do hot ng ca D n i vi mi trng vt l (khng kh, nc, t, ting n), i vi ti nguyn thin nhin (ti nguyn nc - ngun nc, ti nguyn t, ti nguyn sinh vt - ng vt v thc vt), i vi mi trng kinh t - x hi (sc kho cng ng hot ng kinh t, sinh hot...) 3- Nghin cu, xut cc bin php k thut hn ch mc thp nht nhng nh hng bt li v tm ra phng n ti u, va hn ch tc ng c hi, va pht huy cao nht cc li ch ca D n khi i vo hot ng. 4- Xy dng chng trnh kim sot v Quan trc cht lng mi trng trong qu trnh vn hnh D n. Bng ii. Danh sch cn b trc tip tham gia lp Bo co TM STT H v tn I 1 2 3 4 Phn cng vic Ni cng tc

CNG TY C PHN U T, CNG NGH MI TRNG VA HA TNG KY THUT LAC VIT (LAVIC) Ths. Nguyn Phan Anh Ks. Phan Hoanh Sn Ths. Thi Kim Xun Ks. Nguyn Cng Minh Giam c d an Chu nhim cng trinh LAVIC LAVIC

Chu tri thc hin Tng hp LAVIC bao cao cui cung. Chuyn gia mi trng nc LAVIC anh gia cht lng mi trng nc Chuyn gia mi trng khng LAVIC khi anh gia cht lng mi trng khng khiBao cao anh gia tac ng Mi trng -

5

Ks. L Anh Tun

LAVIC - 2009

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6

Ks. oan Manh Hung

Chuyn gia phn tich cng LAVIC ngh cp nc anh gia cng ngh cp nc Chuyn gia cht thai rn LAVIC anh gia hin trang cht thai rn Ky s cp thoat nc anh LAVIC gia hin trang h thng cp thoat nc C nhn mi trng Tng LAVIC hp iu kin t nhin kinh t xa hi Chuyn gia phn tich cng LAVIC ngh thoat nc Phn tich, anh gia cng ngh x ly nc Ky s cp thoat nc Tham LAVIC vn cng ng Ky s cp thoat nc Tham LAVIC vn cng ng Ky s cp thoat nc D LAVIC toan kinh phi mi trng

7

Ks. ao Nh Y

8

Ks. ao Trang Nhung

9

Cn. Nguyn Tin Dung

10

Ths. L Vit Thanh

11 12 13 II 1

Ks. Vu Vn Nam Ks. Ha Ngoc Minh Ks. Vu Trng Sn

TRUNG TM CNG NGH X LY MI TRNG B QUC PHONG Ks. Nguyn c Toan Kim inh vin Ly mu, Trung tm cng ngh x phn tich cht lng khng khi ly Mi trng 282 Lac Long Qun Ha Ni Kim inh vin - Ly mu, Trung tm cng ngh x phn tich cht lng khng khi ly Mi trng 282 Lac Long Qun Ha Ni Can b phong thi nghim Trung tm cng ngh x ly Mi trng 282 Lac Long Qun Ha Ni Trung tm cng ngh x ly Mi trng 282 Lac Long Qun Ha Ni

2

Ks. Nguyn Vn Ha

3

Ks. Nguyn Thi Phng

4

Nguyn Thi Nu

Can b phong thi nghim

LAVIC - 2009


13-


CHNG I. M T TM TT D N 1.1. TN D N D n u t Xy dng h thng thot nc, thu gom va x l nc thi Thanh ph in Bin Phu Tinh in Bin. 1.2. T CHC QUN L D N - C quan Ch qun: U Ban Nhn Dn (UBND) Tnh in Bin - Ch u t: BQL D an Chuyn nghanh xy dng tinh in Bin. - i din ch u t: ng Nguyn c Trung - Gim c Ban qun l D n + a ch lin lc: Phng Him Lam Thanh ph in Bin Phu Tinh in Bin + in thoi: 0913.253223 1.3. V TR A L in Bin l mt tnh min ni bin gii nm pha Ty Bc Vit Nam. Tnh mi c chia tch ngy 01/01/2004 theo Ngh quyt s 22 k hp th IV Quc hi kha XI. Vi din tch t nhin l: 9.554,107 km2, c ta a l 20 o54 22o33 v Bc v 102o10 103o36 kinh ng. in Bin Ph c xem l mt thnh ph nm bin gii v ch cch bin gii vi Lo khong 35 km. in Bin Ph cch H Ni 474 km theo quc l 6 v 279. Thnh ph in Bin Ph pha ng nam gip huyn in Bin ng, cc pha cn li gip huyn in Bin. Thnh ph in Bin Ph c sng Nm Rm chy qua. in Bin l u mi giao thng quan trng ca 2 tuyn quc l: Quc l 279 ni thnh ph in Bin vi th trn Tun Gio pha ng v ni vi nc Lo pha Ty qua Ca khu Ty Trang. Quc l 12 ni Thnh ph in Bin Ph vi th x Lai Chu ng cp 4 min ni. Phm vi nghin cu c gii hn nh sau: Bao cao anh gia tac ng mi trng c nghin cu cho Thanh ph in Bin Phu cu th theo pham vi thit k hp phn thoat nc thai c gii han trong 6 phng ni thanh cua thanh ph va mt s vung ln cn: Phng Tn Thanh, Mng Thanh khu trung tm thnh ph, phng Him Lam, phng Nam Thanh, Noong Bua, Thanh Bnh. Phm vi nghin cu theo ni dung ca d n s bao gm:-

Fax: 0230.810584

Thu gom, vn chuyn lu lng nc thi sinh hot: Xy dng mi cac tuyn cng thu gom nc thai bng HDPE kich thc t DN200-DN500 doc theo cac tuyn ng trong thanh ph in Bin Phu.

LAVIC - 2009


14-


-

K mt s knh mng chnh bao gm: Knh 1 knh chay qua khu trung tm phng Nam Thanh qua cu Ban Ten ra ca xa s 12, tuyn knh t bnh vin a khoa n Cu Trng ra ca xa s 9, tuyn knh chay doc phng Thanh Binh ra ca xa s 13 v cai tao, no vt ton b h thng thot nc ma hin c bao gm cac tuyn ng Trng Chinh, ng 279, tuyn ng sn vn ng, tuyn ng Cu Trng. Tram x l nc thi sinh hot c t tai vi tri ngoai thanh thuc xa Ban Ten B, di chn cu C4.

-

1.4. NI DUNG CA D N 1.4.1. Loi hnh h thng thot nc Cac phng an thoat nc: Phng an 1: H thng thoat nc ring. - H thng thoat nc ma va nc thai hoan toan tach ri nhau. - H thng thoat nc thai: nc thai sinh hoat, nc thai san xut cung chay vao mt h thng cng sau o c lam sach tram x ly. - H thng thoat nc ma: nc ma c thu vao h thng cng ring, thng vao sng sui khng cn x ly. - u im: am bao v sinh tt nht trong 3 phng an vi toan b nc thai c lam sach cac tram x ly trc khi xa ra ngun nc. - Nhc im: + Mua kh mang li cng thoat nc ma khng hoat ng nn lang phi. + Lu lng nc bn nho ( khoang 0,5 l/s,ha), ng kinh cng nho, dc t cng ln, su t cng ln, phai co nhiu tram bm chuyn tip. + Khng thu c nc ma t u ( 5 10 phut u cua trn ma) x ly. + Quan ly phc tap va chi phi cao. Phng an 2: - Toan b nc thai sinh hoat, san xut va nc ma chay vao chung mt h thng cng. - u im: + Ca mua kh va mua ma h thng u c khai thac. + Kinh phi nho nht trong 3 phng an. Do lng nc ma rt ln so vi nc thai nn h thng cng chi cn xy dng nh h thng thoat nc ma nh phng an thoat nc ring la u. Lu lng nc thoat ln nn ng kinh cng ln, dc nho, su t cng giam, tuyn cng ngn. + Quan ly n gianLAVIC - 2009Bao cao anh gia tac ng Mi trng -

15-


- Nhc im: + Mua ma nu thu gom v x ly thi lu lng tram x ly rt ln khng th x ly c. + Mua kh nc thai khng c x ly se xa trc tip ra ngun tip nhn la cac h, sng sui gy nhim mi trng. + Ch lam vic cua cng khng n inh, v mua kh do lu lng nc thai nho, vn tc nc nho d gy lng cn, tc nghen cng. Cn phai thng xuyn nao vet. Phng an 3: - Toan b nc thai sinh hoat, san xut va nc ma u chay vao chung mt h thng cng nh phng an 2 nhng tai cac im xa trc khi chay ra h, sng nc thai c h thng cng bao, ging tach dn v tram x ly con nc co ln nc thai a c pha loang se chay vao sng sui. i vi cac khu dn c mi, cac khu co vi tri t ng d dang thi xy dng mang li ng thoat nc thai ring thu gom v tram x ly. - u im: + V mt v sinh la tng i tt vi toan b n thai bn c lam sach ( mua kh va khi ma nho) hoc c pha loang vi nc ma ( khi ma ln) trc khi ra sng, sui. + Thu c nc ma t u (5 10 phut u cua trn ma ) + Tn dung c h thng cng chung hin co + Giam chi phi xy dng ban u. + Giam chi phi n bu giai toa. - Nhc im: + Cc tuyn cng bao nc bn t cc ging tch n trm x l phi t kh su, do cui cc tuyn cng chnh nn cng cn trm bm chuyn tip. + Cc ca x phi xy dng cc ca chn ng m t ng khng cho nc chy vo cng thot trong ma kh, khi khng c ma. + Qun l h thng cn c chuyn mn. * La chn h thng thot nc. Da trn c s phn tch cc u nhc im ca tng phng n d kin s p dng cho vic xy dng h thng thot nc thnh ph in Bin Ph. c bit l tnh hnh hin trng h thng thot nc v thi quen vn hnh h thng ca cng ty qun l a phng. T vn ngh chn phng n 3 h thng thot nc na ring xy dng HTTN cho th x. Ni dung ca phng n 3 nh sau: Khu vc ni th- khu t khch sn Mng Thanh n ch trung tm, khu ng Trng Chinh, sn vn ng hin nay c h thng thot nc chung do , ci toLAVIC - 2009Bao cao anh gia tac ng Mi trng -

16-


no vt cc tuyn cng hin c v xy dng cc ging tch nc ti cc im x tp trung nc thi bn vo h thng cng bao v dn nc v trm x l nc thi. Cn cc khu vc khc th xy dng h thng cng thu gom nc thi ring. 1.4.2. Xy dng h thng thot nc ma 1.4.2.1. S t chc thot nc ma H thng cng thot nc c phn thnh 3 cp, trong mng li ng cng c phn thnh 2 cp. Vic phn cp cc tuyn cng khng ch ph thuc vo kch thc cng m cn ph thuc vo v tr v chc nng ca n trong mng h thng thot nc. nh ngha v cc cp ca h thng cp nc th hin trn bng v hnh v di y. H ga thu nc M S phn cp h thng cng (xem hnh v) H ga thu Cng tiu nc M khu Cng tiu khu

H ga thu nc M

Cng tiu khu

H ga thu nc M

Cng tiu khu

Sng, knh thot nc chnh Cng cp III: Cng thot nc tiu khu, cng ng, cng trn ph Cng cp II: Cng trc thot nc chnh ca th

Bng 2: Bng phn cp h thng cng thot nc Phn loi Cp 1 Cp 2 Cp 3 nh ngha Sng, mng, knh thot nc chnh t nhin Tuyn cng trc chnh vn chuyn nc ma/nc thi ti trm x l hoc x vo mng (mng v cng thot nc ma D>500, cng nc thi ti trm x l) Tuyn cng v mng tiu khu tip nhn nc ma v nc thi (Cng thot nc D500)

1.4.2.2 Phn chia lu vc thot nc ma in Bin l mt tnh min ni pha Bc c bao bc bi cc dy ni v cc con sng. Cc dy ni cao pha ng v cc con sng sui pha ty nam. Hng chy t ng Bc sang Ty Nam, thnh ph in Bin Ph chia thnh 07 lu vc thot nc nh sau: Lu vc 1: Phm vi phc v: khu dn c mi trong phng Him Lam.LAVIC - 2009Bao cao anh gia tac ng Mi trng -

17-


y l khu vc c dn c tha tht, v vy lu lng nc thi l rt t. V vy tiu thot nc y ch yu l nc ma. Lu vc 2: Phm vi phc v: phng TnThanh. Hng thot nc chnh: nc ma ra sng Nm Rm thng qua ca x s 3 Lu vc 3 ,4,5: Phm vi phc v: phng Mng Thanh. y l khu vc c a hnh tng i phc tp chnh v vy vic tiu thot nc y l tng i kh khn. Mt khc y l khu vc c dn c tp trung ng c, y l khu vc tp trung rt ln lng nc thi ca thnh ph in Bin Phu. Lu vc 6: Phm vi phc v: phng Tn Thanh, Nam Thanh v trm x l. y khu vc c cc tuyn cng hin trng tng i y vi rt nhiu ca x, chnh v vy vic tiu thot nc tng i tt Lu vc 7: Phm vi phc v: khu vc gn sn bay thuc phng Thanh Bnh. y l khu vc mi c xy dng nn c h thng thot nc ma tng i tt. Tuy nhin do cha c h thng thot nc thi sinh hot gy nhim nghim trng. Khu vc ny nht thit phi xy dng h thng cng thu gom nc bn. Khu vc phng Thanh Trng hin ang thot nc t do ra knh hin c. 1.4.2.3. Tnh ton mng li nc ma Tnh ton lu lng thot nc ma da trn cng thc: Q = q T (l/s) Trong : Q: Lu lng nc ma tnh ton (l/s) q: Cng ma tnh ton (l/s) : H s mt ph T: Thi gian nc ma chy t tiu khu n im tip theo trong cng (h) Cng ma q c tnh ton da trn cc thng s kh hu ti trm quan trc in Bin Ph, c th nh sau: q=((20+b)^n*q20*(1+C*lgP))/(t+b)^n Trong : b: Tham s hiu chnh, b=11.64 n: Ch s gim dn cng theo thi gian t, n=0,7446 t: Thi gian ma C: H s c tnh n c tnh ring ca tng vng, C=0,2186 q20: Cng ma ng vi trn ma c thi gian ma 20 pht, q20= 225.4 (Cng thc ca Trn Vit Lin)

LAVIC - 2009


18-


P: Tn xut ma, chu k lp li mt trn ma (chu k trn cng). Vi cc c th ca mt th loi III nh thanh ph in Bin Ph v cc iu kin v kinh t, chn P=2 nm cho tnh ton cc cng thot nc cp 2, cp 3. Chn P=5 nm cho tnh ton cc knh, mng thot nc cp 1. Tnh ton thu lc mng li tuyn cng thot nc ma (cng thc Manning):Q =AxV (m 3 /s)

V=

1 R n

2/3

x S1/2 (m/s)

Trong :

Q - lu lng tnh ton (m3/s) A - din tch mt ct ngang dng chy (m2) V - tc trung bnh dng chy (m/s) n - h s nhm ph thuc tnh cht b mt lng dn R - Bn knh thu lc (m) S - dc thu lc/ dc ng nng (m/m)

1.4.2.4. Khi lng cc hng mc thot nc ma Kch thc ng cng BTCT (mm) Khi lng thi cng (m) 1.4.3. Xy dng h thng thot nc thi 1.4.3.1 S thot nc thiNc thi sinh hot, dch v, cng cng

D800 1314

D1000 4071

D1700 444

Cng thot nc chung

Ging tch nc thi

Nc thi sinh hot, dch v, cng cng H ga thu gom nc thi

Cng thot nc thi tiu khu Cng thot nc thi ng ph Cng chnh thu gom nc thi Cng thot nc chungTrm x l nc thi Trm bm tng nc thi

ra ngun tip nhn

LAVIC - 2009


19-


1.4.3.2. Lu vc thot nc thi Trong giai on nghin cu ca d n n 2015, h thng thot nc c la chn l h thng thot nc na ring. V h thng thot nc thi l h thng t chy, do nghin cu lu vc thot nc l mt trong cc yu t rt quan trng. V c bn, lu vc thot nc thi ging nh lu vc thot nc ma vi cc yu t ng phn thu, tu thu ging nhau, thun tin cho cng tc vch tuyn c th li dng a hnh nhm gim su chn cng ti a nht. Phn chia lu vc: Lu vc 1: c gii han bi chu yu la phng Him Lam n u ng Trng Chinh Lu vc 2: c gii han bi khu dn c phng Him Lam va khu dn c u Knh Ta. y la khu vc co dn c tha tht, ia hinh lu vc phc tap nn se thu gom trong giai oan sau. Lu vc 3: c gii han bi chu yu la phng Tn Thanh Lu vc 4,5,6: c gii han chu yu la phng Mng Thanh va Nam Thanh. y l khu vc c a hnh tng i phc tp tr khu vc phng Nam Thanh chnh v vy vic tiu thot nc y l tng i kh khn. Mt khc y l khu vc c dn c tp trung ng c, y l khu vc tp trung rt ln lng nc thi ca thnh ph in Bin Phu. Trong lu vc nay co ca khu dn c mi Noong Bua c inh c t cng trinh thuy in Sn La v se c u ni giai oan sau. Lu vc 7: c gii han chu yu la phng Thanh Bnh, phn khu vc phng Thanh Trng se c u ni trong giai oan II. 1.4.3.3. Lu lng nc thi Trong giai on 1 n nm 2015, d n s nghin cu trn phm vi khu vc ni th gm cc phng: Tn Thanh, Mng Thanh, Nam Thanh, Noong Bua, Thanh Bnh. Dn s phc v trong giai on 1 l 57.474 ngi (Ngun: iu chnh quy hoch chung thnh ph in Bin Ph n 2020). y l c s cho vic tnh ton lu lng nc thi thnh ph in Bin Ph giai on 1 (n 2015).- Tiu chun thot nc thi sinh hot: 108 l/ng.ng. - Lng nc thi t cc hot ng thng mi, tiu th cng nghip ly bng

20% lng nc thi sinh hot.- Lng nc thi t cc cng trnh cng cng, dch v ly bng 16% lng

nc thi sinh hot.- H s khng iu ho ngy max: Kng-max = 1.3

LAVIC - 2009


20-


Bng 1: Bng tnh ton lu lng nc thi phng Him Lam GI n nm 2015 Tiu Lu lng Lu lng S Nhu cu dng nc Dn s chun TB max TT 3 (ngi) (l/ng.ng.) (m /ng.) Kng-max (m3/ng.) Tiu chun thi nc 1 sinh hot Qsh 11,162 108 603 1.3 784 Tiu chun thi nc thng mi, tiu th 2 CN Qtm=%Qsh 20% 121 1.3 157 Tiu chun thi nc cc dch v cng cng 3 Qcc=%Qsh 16% 96 1.3 125 Lu lng nc thm 4 Qtc=%Qsh 10% 60 1.3 78 5 TNG CNG : 880 1,144 6 LM TRN 1,140 Bng 2: Bng tnh ton lu lng nc thi phng Tn ThanhGI n nm 2015 Tiu Lu lng Lu lng S Nhu cu dng nc Dn s chun TB max TT 3 (ngi) (l/ng.ng.) (m /ng.) Kng-max (m3/ng.) Tiu chun thi nc 1 sinh hot Qsh 10,426 108 1,013 1.3 1,317 Tiu chun thi nc thng mi, tiu th 3 CN Qtm=%Qsh 20% 203 1.3 263 Tiu chun thi nc cc dch v cng cng 3 Qcc=%Qsh 16% 162 1.3 211 Lu lng nc thm 4 Qtc=%Qsh 10% 101 1.3 132 5 TNG CNG : 1,480 1,923 6 LM TRN 1,920 Bng 3: Bng tnh ton lu lng nc thi phng Mng Thanh GI n nm 2015 Tiu Lu lng Lu lng S Nhu cu dng nc Dn s chun TB max TT 3 (ngi) (l/ng.ng.) (m /ng.) Kng-max (m3/ng.) Tiu chun thi nc 1 sinh hot Qsh 12,107 108 1,177 1.3 1,530 Tiu chun thi nc thng mi, tiu th 3 CN Qtm=%Qsh 20% 235 1.3 306 Tiu chun thi nc cc dch v cng cng 3 Qcc=%Qsh 16% 188 1.3 245 Lu lng nc thm 4 Qtc=%Qsh 10% 118 1.3 153 5 TNG CNG : 1,718 2,234 6 LM TRN 2,230LAVIC - 2009Bao cao anh gia tac ng Mi trng -

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Bng 4: Bng tnh ton lu lng nc thi phng Noong Bua GI n nm 2015 Tiu Lu lng Lu lng S Nhu cu dng nc Dn s chun TB max TT 3 (ngi) (l/ng.ng.) (m /ng.) Kng-max (m3/ng.) Tiu chun thi nc 1 sinh hot Qsh 5,214 108 507 1.3 659 Tiu chun thi nc thng mi, tiu th 3 CN Qtm=%Qsh 20% 101 1.3 132 Tiu chun thi nc cc dch v cng cng 3 Qcc=%Qsh 16% 81 1.3 105 Lu lng nc thm 4 Qtc=%Qsh 10% 51 1.3 66 5 TNG CNG : 740 962 6 LM TRN 960 Bng 5: Bng tnh ton lu lng nc thi phng Nam Thanh GI n nm 2015 Tiu Lu lng Lu lng S Nhu cu dng nc Dn s chun TB max TT 3 (ngi) (l/ng.ng.) (m /ng.) Kng-max (m3/ng.) Tiu chun thi nc 1 sinh hot Qsh 9,605 108 934 1.3 1,214 Tiu chun thi nc thng mi, tiu th 3 CN Qtm=%Qsh 20% 187 1.3 243 Tiu chun thi nc cc dch v cng cng 3 Qcc=%Qsh 16% 149 1.3 194 Lu lng nc thm 4 Qtc=%Qsh 10% 93 1.3 121 5 TNG CNG : 1,363 1,772 1,800 6 LM TRN Bng 6: Bng tnh ton lu lng nc thi phng Thanh Bnh GI n nm 2015 Tiu Lu lng Lu lng S Nhu cu dng nc Dn s chun TB max TT 3 (ngi) (l/ng.ng.) (m /ng.) Kng-max (m3/ng.) Tiu chun thi nc 1 sinh hot Qsh 6,579 108 639 1.3 831 Tiu chun thi nc thng mi, tiu th 3 CN Qtm=%Qsh 20% 128 1.3 166 Tiu chun thi nc cc dch v cng cng 3 Qcc=%Qsh 16% 102 1.3 133 Lu lng nc thm 4 Qtc=%Qsh 10% 64 1.3 83 7 TNG CNG : 934 1,214 8 LM TRN 1,200LAVIC - 2009Bao cao anh gia tac ng Mi trng -

22-


Bng 7: Bng tng hp lu lng nc thi giai on I n nm 2015 S TT 1 3 3 4 5 6 Nhu cu dng nc Tiu chun thi nc sinh hot Qsh Tiu chun thi nc thng mi, tiu th CN Qtm=%Qsh Tiu chun thi nc cc dch v cng cng Qcc=%Qsh Lu lng nc thmQtc=%Qsh TNG CNG : LM TRN Dn s (ngi) 55,093 Tiu chun (l/ng.ng.) 108 20% 16% 10% Lu lng TB 3 (m /ng.) 5,355 1,071 857 536 7,818 7,800 Kngmax 1.3 1.3 1.3 1.3 Lu lng max (m3/ng.) 6,962 1,392 1,114 696 10,164 10,000

Lu lng nc thi theo tnh ton c chn l Q=10,000 m3/ng. Lu lng ny s l thng s cho cng tc tnh ton thu lc mng li thot nc thi, trm bm v trm x l. 1.4.3.4. Cc hng mc u t cho h thng thot nc thi a, Mng li cng thu gom nc thi Mt h thng thu gom nc thi s c xy dng dc theo cc tuyn ng ph ca in Bin Phu, c th trong bng sau: Bng 8: Khi lng cng thot nc thi xut cho giai on I (2015) STT Hng mc cng vic Tuyn cng thu gom nc thi HDPE 1 2 3 4 5 6 7 Cng DN200 Cng DN250 Cng DN315 Cng DN355 Cng DN400 Cng DN450 Cng DN500 m m m m m m m n v Khi lng 15.749 3.966 4.382 225 3.257 1009 1750

b, Trm bm nc thi Cc trm bm nc thi c xy dng nhm gim su chn cng thu gom nc thi, a nc thi v trm x l. S lng trm bm c la chn ph hp vi iu kin thc t, c th gim ti a s lng trm bm m vn m bo a nc thi v trm x l vi phng n ti u nht.

LAVIC - 2009


23-


Bng 9: Bng tng hp cc trm bm nc thi Hng Mc Trm bm TB1 Cng sut 1.428 m3/ngy Din tch 2,0mx2,0m = 4m2 My bm chm 01 bm lm vic, 1 bm d phng vi thng s: Q=52m3/h, H= 10m, N= 5Kw

Trm bm TB2

2.040 m3/ngy

2,5mx2,5m=6.25m2 01 bm lm vic, 1 bm d phng vi thng s: Q=85m3/h, H= 11m, N= 5,5Kw 2,5mx2,5m=6.25m2 01 bm lm vic, 1 bm d phng vi thng s: Q=78m3/h, H= 10m, N= 5Kw 01 bm lm vic, 1 bm d phng vi thng s: 6 Q=92m3/h, H= 10m N= 6,5Kw

Trm bm TB3

1.872 m3/ngy

Trm bm TB4

2.208 m3/ngy

2,5mx2,5m=6.25m2

Trm bm TB5

3.120 m3/ngy

2,5mx2,5m=6.25m2

02 bm lm vic, 1 bm d phng vi thng s: Q=65m3/h, H= 10m N= 5Kw

c) Trm x l nc thi. * V tr trm x l: V tr trm x l c chn ti khu t ngoai thanh thuc xa Ban Ten

B Din tch chim t ca trm x l l 3 ha. V tr trm x l m bo khong cch vi khu dn c theo tiu chun;

Trm x l nm gn sng Nm Rm; o bo cht lng nc u ra t tiu chun loi B trc khi x thi ngun tip nhn.LAVIC - 2009Bao cao anh gia tac ng Mi trng -

24-


V tr rt thun li v cui khu dn c, cui hng gi, cch xa khu dn

c, m bo cc tiu chun v quy nh v khong cch ti thiu l 300 m. * Gii php cng ngh S dy chuyn cng ngh x l nc thi: Song chn rc Ngn tip nhn B lng ct B x l sinh hc B lng th cp trn Clo hot tnh B tip xc Mng o lu lng X ra sng Nm Rm. S dy chuyn cng ngh x l bn cn: Bn hot tnh B lng bn trng lc Bm bn My p cn bng ti Vn chuyn chn lp hoc lm phn ho hc. * Thit k tram x ly nc thai: 1. H thu nc v trm bm nc thi u vo.

q max = q day,average =

420 m3/h 325m3/h

My bm: 2 bm hot ng + 1 bm d phng. Thng s k thut ca mi bm:

q max = 210 m3/h H = 9,5 m Cng sut ng c 13 kW mi my 2. Song chn rc: Nc thi c bm ln knh dn nc u vo, qua song chn rc gm 1 song chn rc th cng v mt song chn rc c gii. Cng sut lp t ca song chn rc tinh:

q max = 420 m3/h

Ca file

Ca file c iu khin bng tay, c gi ln thnh ca mng t song chn rc Chiu rng 600 mm Chiu cao 1000 mm Song chn c gii Cng sut song chn rc Khong cch gia cc thanh Chiu rng Knh t song chn rc chiu rng chiu su Tn tht qua song chn rc vi lu lng max Vt liu Cng sut ng cLAVIC - 2009

520 m3/h 6 mm 600 mm 700 mm 1000 mm 200 mm Thp khng r 1.1 kW


25-


Song chn rc th cng Cng sut song chn rc Khong cch gia cc thanh Chiu rng Vt liu Knh t song chn rc Chiu rng Chiu su Bng ti

1250 m3/h 30 mm 700 mm Thp khng r 700 mm 1000 mm

Bng ti chuyn ng quay Cng sut Vt liu Cng sut ng c My p rc

1,5 m3/h Thp khng r 1,5 kW

Rc c chuyn ng xoay trn c ng trong cc bao ti Cng sut Vt liu Cng sut ng c My tch ct My tch ct thit b vn chuyn ct Cng sut Vt liu Cng sut ng c Thng cha rc, 1 m3 3. B lng ct thu hi cht ni

1,5 m3/h Thp khng r 1,5 kW

10 l/s Thp khng r 0,55 kW

qh, average qh,max

325 m3/h 420 m3/h 80 m3 10,0 m 2,0 m 4,0 m 11 pht 8 pht

B lng ct

Dung tch Kch thc

Chiu di Chiu rng Chiu cao qh,trung bnh qh, max

Thi gian lu nc

Cu cng tc phc v cho qu trnh vn hnh. Kt cu cng m bo ti trng bm ct Vt liu Cp treo m bo cp in t pha trn b Cng sut ng c My bm ct Kiu Cng sutLAVIC - 2009

thp Carbon 0,37 kW Bm nc thi chm 10l/s x 6.5 ml


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Cng sut ng c

2.9kW

Thng cha rc, 1 m3 Tch cht ni Cung cp kh cho b aroten qa h Cng sut ng c 4. B phn ng sinh hc qh, trung bnh qh,max BOD5-Ti trng bn, vi lu lng lm vic BOD5-Ti trng bn, vi lu lng max Ti trng b Nhit nh nht Ti trng bn Bn hot tnh Lng bn sinh ra Sn xut bn hot tnh, trung bnh Dao ng trong khong Lng bn hot tnh Tng lng bn hot tnh d Tui bn HRT qave qmax.biol AOR SOTR max max qair d=300 mm 2 x 3276 m3 150 m3/h 2,5 m3/min 350 mbar 3 kW 325 m3/h 420 m3/h 890 kg/d 1101 kg/d 0,86 kg BOD/m3xd 15 C 0,21kg BOD/kgMLSS 4,0 kg/m3 1,0 kg TS / kgBOD5 3000 kg TS / d 20004000 kg TS / d 0,8 % TS 250500 m3/d 3,57 d 11,9 h 8h 7080 kgO2/d 596 kgO2/h 6.3 m 2x 3425 m3/h = 6850 m3/h 2088 a = 6552 m3 2 lm vic, 1 d phng 4300 m3/h x 600 bar 50kw mi my bxh =5x3m 2 x 4 pcs 4 kW 1450v/pht

Chiu su b Cng sut my nn kh ng knh a Dung tch b My nn kh 3 my Cng sut Cng sut ng c My trn c hc Kch thc h thu S my trn Cng sut my trn Tc Ca fileLAVIC - 2009


27-


Nm ca file iu khin bng tay o Hai ca cha knh dn nc vo o Ba ca cn li phn phi nc trc b lng ln hai Chiu rng 400 mm Chiu cao 600 mm 5. B lng Din tch b mt ng knh Chiu su Th tch Ti trng b mt Ti lng bn, 2 x 350 m2 Cnh tng Trung bnh 2 x 1400 m3 qave qmax, biol. qave qmax, biol qave 700 m2 21 m 3.7 m 4m 2800 m3 0,60 m/h 0,89 m/h 2,4 kgSS/m2h 3,6 kgSS/m2h 120 ml/g 0,29 m3MLSS/m2h 0,43 m3MLSS/m2h 6,7 h 50200 % 2101250 m3/h

Liu lng bn , SVI Ti trng bn

qmax Thi gian lu bn, qave T l bn tun hon Lu lng bn tun hon Thanh gt cn

Cu trc bng thp cacbon cng Thanh gt nm di y Cng sut ng c 2.2 kW Bm bn tun hon 3 my bm (2+1) Cng sut 180 m3/h, h = 5 m Cng sut ng c 14.3 kW Bn hot tnh s c bm t b lng t 2 n b aroten. Hai bm lm vic ng thi v mt bm d phng Bm bn d 2 my bm Cng sut 40 m3/h, h = 24 m Cng sut ng c 7.5kW Bn hot tnh d s c bm t b lng t 2 n b nn bn. Mi my bm cho mi b. duy tr hot ng bm c lin khi c mt my bm ngng hot ng, s c mt my bm hot ng v bm cho c hai b. 6. B nn bn B nn bn ng trng lc d = 13 m h = 3.5 m Thanh quayLAVIC - 2009

A = 133m2


28-


Lm bng thp cacbon cng Thanh gt nm di y b Trung tm hnh trn Cng sut ng c Ti trng bn max Cng sut Knh o lu lng: l = 5000 mm b = 500 mm h = 800 mm 7. Nh lm kh bn

0.75 kW 30 kg DS/ m2/d 4000 kg DS/d

Bng ti quay trong b nn bn s hot ng trong 8h mt ngy mi ngy mt ln Cc thng s kch thc Cng sut: ti trng thu lc trung bnh 12.5 m3/h max 25 m3/h Cng sut: sinh khi trung bnh 375 kg/h max 500 kg/h Lng bn kh 23 % DS Lng nc tch khi bn kh 1720 % DS Qa trnh lm kh bn tu thuc vo ti trng trung bnh Lng bn p trung bnh 18 m3/d Bng ti

Thit b trn tnh polyme v bn u vo Tang trng tin kh nc Bng ti i rng 2300 mm Cng sut ng c 1,1 kW My bm bn ly tm Cng sut Cng sut ng c

My bm bn

10-40 m3/h, h = 20m 5,5 kW

Thng cha bnh bn sau khi p. 2 my vi cc thng s sau ng knh Chiu di Cng sut Cng sut ng c Trm polymer

300 mm 4m 3 m3/h 2,2 kW

Bnh cha dung dch polymer (delivered by the polymer supplier) Qu trnh ho trn c iu khin (dng phao) Xy ra s ho trn tnh gia dung dch polymer v nc mi Bm nh lng polymerLAVIC - 2009Bao cao anh gia tac ng Mi trng -

29-


My bm ly tm Cng sut vic) Cng sut ng c Thng cha bn Trm kh trng Cht kh trng Liu lng B tip xc Dung tch Thi gian tip xc Lu lng trung bnh Lu lng max Lu lng max n nm 2010 nh lng v cung cp clo Cng sut Th tch b d phng nh cung cp) Cng sut ng c * Cc cng trnh ph tr Thot nc Sn ng ni b Cng tng ro Nh qun l v iu hnh

1-8 l/h, 20m (2 my lm 0.75 kW 2 x 10 m3 kh clo 5.20 g/m3 50.200 kg/d 2.10 kg/h 70 m3 10 pht 6,7 pht 3,4 pht 2...10 kg/h 2 m3 (Tu thuc vo 1kW

Dung tch

1.4.4. Cc loi my mc thit b phc v d n Do c th cc hng mc ca cng trnh nn cc thit b, my mc s tham gia thi cng ch yu l: Bng 1. Danh mc cc thit b thi cng chnh ST T M t thit b S lng 1 Nm sn sut 2005 Cng sut hot ng Lc p ln nht 120 tn Lc p ln nht 120 tn Sc nng 10 tn.

My p cc YZJ 120

My p cc YZJ 120

1

1998

My cu phc v

8

2008

LAVIC - 2009


30-


ST T

M t thit b

S lng 4 4 4 3 8 10 5 5 3

Nm sn sut

Cng sut hot ng Sc nng 10 tn.

My cu phc v SUMITOMO Gu o Gu o My trn b tng My m di My m bn My m b tng t ch vt liu My bm nc V mt s thit b ph tr khc 1.4.5 K hoch thc hin

2005 2005 2006 2008 2004 2006 2005 2007

Cp rng 600 Cp rng 1000 50 m3/h 280 W Lc dp 1,63 tn/ln git Lc p 9,8kN Dung tch 6-9 m3 30 m3/h

Tin thc hin d n c trnh by bng sau: 2009 2010 Nm /Quy III Ph duyt va thm inh d an u thu va ky kt hp ng Khao sat, thit k ban ve thi cng Mua sm va xy lp Chay th, nghim thu IV I II III-IV I

2011 II III-IV I II

2012 III IV

+ Hoan thanh bc d an trong thang 07 nm 2009 va ph duyt quy IV nm 2009 + Hoan thanh bc n bu giai phong mt bng trc thang 12 nm 2009 + T chc u thu thang 10 /2009 n thang 02 /2010 + Thi gian thit k va thi cng tt ca cac hang muc cng trinh d tinh bt u t thang 06/2009 va hoan thanh toan b trc 31/12/2012. + Tng thi gian chun bi u t, thc hin u t va kt thuc xy dng la 48 thang.LAVIC - 2009Bao cao anh gia tac ng Mi trng -

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1.4.6. Tng mc u t + Tng mc u t cua d an la: 274.335.000.000 VN + Tng ng: 11.673.800 EURO + Ty l phn b ngun vn nh sau: 235.235.000.000 VN Vn vay tin dung u ai cua chinh Tng ng: 10.010.000 EURO phu Phn Lan Ty l : 85,75% 39.100.000.000 VN Vn i ng cua Chinh phu Vit Tng ng : 1.663.800 EURO Nam Ty l : 14,25% Ngun vn u t c phn chia nh sau: 1. Mang li thoat nc thai: 2. Tram bm tng ap: 3. Tram x ly nc thai: 4. Phn thoat nc ma: 5. Chi phi ban quan ly: 6. Chi phi n bu, giai phong mt bng: 7. Chi phi khac: 8. D phong phi: 1.4.7. Mc tiu ca d n Trn c s c s chp thun ca Chnh ph v cc B ngnh, Thanh ph in Bin Phu ng k s dng vn tn dng u i (ngun vn ODA) ca Chnh ph Phn Lan u t cho cc cng tc xy dng h thng thot nc ma, thu gom v x l nc thi Thanh ph in Bin Phu nhm gim thiu nhim mi trng, nhim ngun nc, nng cao cht lng sng ca nhn dn, ci thin mi trng u t gp phn thu ht u t, c bit l u t nc ngoi vi cc mc tiu nh sau: Mc tiu lu di ca d n nhm ng gp cho cc qu trnh:

63.389.930.000 ng 4.213.112.000 ng 101.383.175.000 ng 13.875.662.000 ng 2.413.777.000 ng 3.000.000.000 ng 50.276.626.000 ng 35.782.843.000 ng

Ci thin cht lng cuc sng cho ngi dn ti thnh ph; Thc y s pht trin kinh t; Gim di c lao ng ra cc thnh ph ln.

Cc mc tiu c th ca d n: Ci thin iu kin mi trng ti thnh ph in Bin Ph, thng qua xy dng cc cng trnh thot nc, thu gom v x l nc thi thng qua cc hot ng gio dc v quan h cng ng;Bao cao anh gia tac ng Mi trng -

LAVIC - 2009

32-


Tng cng tnh lu bn ca c s h tng v cc dch v thnh ph in Bin Ph bng vic h tr n v qun l v vn hnh h thng thot nc v v sinh thnh ph in Bin Ph, a ra c ch hot ng cho cng ty cng nh gip v mt k thut trong cng tc qun l vn hnh h thng thot nc, thu gom v x l nc thi. 1.4.8. ngha ca d n - Gp phn vo vic hon thin c s h tng, thc y qu trnh pht trin kinh t- x hi cho Thanh ph in Bin Phu, tinh in Bin hin ti v trong tng lai gn; - Bo v v s dng hp l, bn vng ngun ti nguyn nc ca quc gia; - Gii quyt c bn tnh trng ngp ng cc b v ma ma cho Thanh ph, thu gom v x l ton b nc thi sinh hot trn a bn, gim thiu nhim mi trng do nc thi bi ong va khng c x ly, gp phn ci thin iu kin v sinh mi trng, nng cao iu kin sng cho ngi dn thanh ph; - Gp phn nng cao thc ca nhn dn trong vic bo v, gi gn, s dng hp l ngun ti nguyn ca quc gia, bo v mi trng sng cn kh trong lnh. Tao iu kin thu hut cac nha u t san xut kinh doanh, va c bit la u t vao nghanh cng nghip khng khoi du lich sinh thai, th manh cua Thanh ph in Bin Phu

LAVIC - 2009


33-


CHNG II: IU KIN T NHIN,MI TRNG V KINH T- X HI 2.1 IU KIN T NHIN V MI TRNG 2.1.1. iu kin v a l, a cht 2.1.1.1.V tr a l Thanh ph in Bin Phu co vi tri chin lc v Quc phong an ninh cua vung Ty Bc; co sn bay quc t va qun th di tich lich s in Bin Phu; canh quan thin nhin ti ep va giu ban sc vn hoa cac dn tc. Thanh ph in Bin Phu a va ang tr thanh mt trung tm du lich cua khu vc Ty bc, la u mi giao thng quan trong vi cac nc ASEAN va tinh Vn Nam Trung Quc. in Bin l mt tnh min ni bin gii nm pha Ty Bc Vit Nam. Tnh mi c chia tch ngy 01/01/2004 theo Ngh quyt s 22 k hp th IV Quc hi kha XI. Vi din tch t nhin l: 9.554,107 km2, c ta a l 20 o54 22o33 v Bc v 102o10 103o36 kinh ng. Thnh ph in Bin Ph pha ng nam gip huyn in Bin ng, cc pha cn li gip huyn in Bin. 2.1.1.2. c im a hnh Thnh ph in Bin Ph nm trong lng cho in Bin, c cao bin thin t +473 m n +563m - Khu vc in Bin Ph c cao nn t nhin trung bnh khong 483m - Cao nn trung bnh quanh cc chn i khong +490m - Cao nh cc i A1, C1, C2, in Bin Ph trong khong 5%-536m Nhn chung vng th trn c v cnh ng Mng Thanh c nn a hnh bng phng ( dc

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