1

Pimon Jiravithayaboon

Water Quality Management BureauPollution Control Department

Water Quality Sampling and monitoring

2

Guidelines of Water Quality Management

•Water quality monitoringR i h f h•Reporting the status of the water

pollution •Establishment of the water quality standard and effluent standards•Formulating the action plan for

i ll iwater protection, pollution prevention and remediation•Public participation

Areas

Inland Water Resources

25 basins

Coastal Water Resources

C t l : 2 814 kCoastal areas: 2,814 km.

3

Water Quality Problems

DO depletion in the river Bacteria contamination Death of fishAlgae bloom, algal toxin

S lid t i ti Solids contamination Toxic substances contamination Excessive nutrient

Major Sources of Water Pollution

Point Sources

I d t i l t di h Industrial waste discharges, Domestic waste discharges, Agricultural waste discharges (pig, duck, fish and other farms.)

Non-point sources

agricultural waste discharges (paddy field, gardens)

4

Surveillance MonitoringSampling point: 393 stations (53 g (rivers and lakes)

Major parameters: pH, cond., tur., DO, BOD, TCB&FCB, TP, Nitrogens, TS, SS, and metals

Surveillance Monitoring

Sampling frequency: 2 4 times/year• Sampling frequency: 2-4 times/year (dry&wet season)

• QA/QC• Regional Offices

5

Inland Water Quality Monitoring Stations

Total Monitoring 393 Stations Station

- 48 rivers- 4 Lakes

2 4Frequency 2 - 4 times/year

State of inland waterquality in 2007

19% good condition

34% fair condition

45% poor condition

2% very poor

30 % BOD

21% DO

17% TCB

17% FCB

15% A iy p

condition15% Ammonia –

Nitrogen

6

Coastal Water Quality Monitoring Stations

Total Monitoring Stations - 240 Stations in 58 CoastsFrequency 2 times/year

State of coastal water quality in 2007

12% very good condition

49% good condition

36% fair condition

3% poor condition

0% very poor condition

7

Automaticstation pcd

automatic station.

8

automatic station.

www.wqmonline.com

ตาแหนงสถาน, ชอสถานและชอแมนา เมอคลกเขาไปจะแสดงรายละเอยด

หนาหลกสาหรบระบบรายงานขอมล

เพมเตม

9

Establishment of Water and Effluents Standards

•Surface and coastal water standards (2)

•32 classified rivers

•Effluents standards(8) (building, housing, industrial gas station pig farm fish pierindustrial, gas station, pig farm, fish pier, coastal aquaculture and fresh water aquaculture ponds)

Inland Water Quality Standard

Classifications of Inland Water Resources

Class 1 Extra clean fresh surface water resources used for

- Consumption (ordinary water treatment process for pathogenic

destruction) / ecosystem conservation

Class 2 Very clean fresh surface water resources used for

- Consumption (ordinary water treatment) / aquatic organism of

conservation /fisheries/recreation

Class 3 Medium clean fresh water resources used for

( )- Consumption (ordinary water treatment) / agriculture

Class 4 Fairly clean fresh water resources used for

- Consumption (special water treatment) /industry

Class 5 The sources which are not classified in class 1-4 and used for

navigation

10

Coastal Water Quality Standard

Classification of Coastal Waters

Class 1 For natural resource conservation

Water Quality Index

There are 59 water quality Class 1 For natural resource conservation

Class 2 For coral conservation

Class 3 For coastal aquaculture activities

Class 4 For water sport

Class 5 For industry and pier

There are 59 water quality

indexes, for examples. suspended

solid, DO, total coliform bacteria

heavy metal and etc.

y p

Class 6 For community area

(Revised in 2006)

Tools for water quality management•Integrated water resources management(River Basin Committee)(River Basin Committee)•GIS•Modelling

11

Future Prospect of Water Resources Management

•Cluster waste treatment facilities are t dpromoted

•The assimilative capability of receiving waters must be considered

• more standards for wastewater are on schedule to be established & lawsschedule to be established & laws enforcement

•Decentralization: the local officials are to be authorizes as the pollution control official according to the new Act 1999

www.pcd.go.th

1

Water Quality Sampling and monitoring

Water quality monitoring

Total water sampling - 493 stations Total water sampling - 493 stations

in 48 rivers

4 times/yr. (Main rivers 4 rivers)

2

Automaticstation pcd

automatic station.

3

automatic station.

Automatic station

4

GPRS Modem

สญญาณไฟเตอน

Struture control

อาง Acrylic สาหรบตรวจวดนา

เครองมอตรวจวดคณภาพนา

HACH sc1000

หววด DO

หววด pH

หววด Conduc tivity

MMC1000 Controller

ระบบแปลงไฟฟาและระบบปองกน

ระบบไฟฟา 220V

ภาพสวนประกอบตสถานตรวจวดคณภาพนาปมนา

ทางนาทง

สถานตรวจวด สถานตรวจวด

GPRS Link

กรณปกตกรณมปญหาคณภาพนา

คอมพวเตอรแมขายกลาง

กรมควบคมมลพษ

(เกบรวบรวมขอมล)

SMS

แจงเตอนสญญาณไฟ

แจงเตอน

เครอขายเตอนภย แจงเตอนประชาชน

และผเลยงปลาในกระชง

แจงเตอน

เผยแพรขอมลสสาธารณชน

5

เกณฑคณภาพนาทใชในการแจงเตอน

ปรมาณออกซเจนละลาย (DO)

วกฤต (Critical) เตอนภย (warning) ปกต (Normal)

0 1 2

ปกตเตอนภย เตอนภยวกฤต วกฤต

ความเปนกรด ดาง (pH)0 5 5.5 8.5 9 14

ความเปนกรด-ดาง (pH)

ปกต เตอนภย วกฤต

0 1,000 μS 2,000 μS

ความนาไฟฟา (EC)

** DO–CRITICAL LEVEL **

Early warning by SMS Early warning by SMS

MONITORING STATION “ BanSrang” ,10/11/2007 12:30pH = 7.2 , DO = 0.8 mg / L

EC = 100 μS

6

www.wqmonline.com

ตาแหนงสถาน, ชอสถานและชอแมนา เมอคลกเขาไปจะแสดงรายละเอยด

หนาหลกสาหรบระบบรายงานขอมล www.wqmonline.com

เพมเตม