giaûi phaùp kyõ thuaät xöû lyù nöôùc...
TRANSCRIPT
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GIAÛI PHAÙP KYÕ THUAÄT XÖÛ LYÙ NÖÔÙC THAÛI KHU TAÙI ÑÒNH CÖ CUÛA THUÛY ÑIEÄN ÑAK R’TIH
TS. Leâ Quoác TuaánKhoa Moâi tröôøng vaø Taøi nguyeânÑaïi hoïc Noâng Laâm TP. HCM
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NGUY CÔ GAÂY OÂ NHIEÃM NÖÔÙC BÔÛI NÖÔÙC THAÛI SINH HOAÏT
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OÂ nhieãm nöôùc do nöôùc thaûi sinh hoaït
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XÖÛ LYÙ TAÏI NGUOÀN
Xöû lyù taïi nguoàn
OÂ nhieãmChaát gaây oânhieãm
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Phöông aùn xöû lyù nöôùcthaûi sinh hoaït cho khu
taùi ñònh cö
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COÂNG NGHEÄ SINH THAÙI LAØMOÄT LÖÏA CHOÏN???
Phöông aùn 1
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Cuïm moâhình öùngduïng
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Thöïc vaät phuû beà maët phaûi ñöôïc löïa choïndöïa vaøo khaû naêng haáp thu chaát thaûi
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Moâ hình thí nghieäm
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Sau 2 naêm vaän haønh
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Cô cheá loaïi thaûi caùc chaát oâ nhieãm trong heäthoáng ñaát ngaäp nöôùc
Source: ROUX ASSOCIATES, INC.
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Heä thoáng ñaát ngaäp nöôùc ñaõ ñöôïc öùng duïngnhieàu nôi treân theá giôùi
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Phöông aùn 2 (Taäp trung nöôùc thaûi ñöôïc)
Hoà sinh hoïc
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O2
Vùng hiếu khí
Vùng tùy nghi
Vùng kỵ khí
O2 Vi tảo Động vật phù du
Vi khuẩnhiếu khí
Vi khuẩnkỵ khí CH4, CO2, NH3, H2S
CO2, NH3, PO43-, H2O
Nước thải
Chất rắnlắng nền đáy
GIÓÁNH SÁNG MẶT TRỜI
Cô cheá xöû lyù nöôùc thaûi trong hoà sinh hoïc
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Nöôùc thaûi(BOD treân 300 mg/l)
Giai ñoaïn sô caáp
Giai ñoaïn II
Giai ñoaïn III
Ao kî khí
BOD giaûm 50-70% trong 1- 5 ngaøy
Ao tuøy nghi
20-40 ngaøy
Ao laéng
1-7 ngaøy
Nöôùc ñaàu ra(BOD < 25mg/l)
Thöùtöïcaùcao
duøngcho
xöûlyùnöôùc
thaûi
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Ao kî khí
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Caùc daïng ao hieáu khí
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Phöông aùn 3
Xöû lyù taïi nguoànquy moâ hoä gia ñình
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HEÄ THOÁNG XÖÛ LYÙ NÖÔÙC THAÛI SINH HOAÏT BAÈNG KYÕ THUAÄT TÖÔÙI NGAÀM
OÁng daãn nöôùc vaøo
Beå chöùa
OÁng phaân phoái nöôùc thaûi
OÁng thu nöôùc thaûi
Haàm töï hoaïi
Hoäp phaân phoái nöôùc
5000
3500500
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CHI PHÍ LAÉP ÑAËT VAØ CHUYEÅN GIAO COÂNG NGHEÄ
1. Thieát bò: 700.000 ñoàng/heä thoáng
2. Coâng laép ñaët: 300.000 ñoàng/heä thoáng
3. Thieát keá vaø chuyeån giao coâng ngheä: 1.000.000 ñoàng/heä thoáng
TOÅNG COÄNG: 2.000.000 ñoàng/heä thoáng
Quy moâ söû duïng: hoä gia ñình töø 5 – 7 ngöôøi
Thôøi haïn baûo haønh: 3 naêm (bao goàm phaântích nöôùc ngaàm vaø baûo trì heä thoáng)
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Vì moät moâi tröôøng trongsaïch vaø thaân thieän