![J.Price 1 , T.Chaosakul 2 , N.Surinkul 2 , J.Bowles 2 , S.Rattanakul 2 , N.Pradhan,W.Simphan 2 , A.Ghimire 2 , K.Wilaingam 2 , L.M. Truong 2 , T.V. Nguyen 2 , T.Pussayanavin 2 , N.Proysurin 2 , S.Singjan 2 , V.Longaphai 2 , S.N.Kalaimathy 2 , T.Koottatep 2 , K.N.Irvine 1 1 ) Geography and Urban Planning and Center for Southeast Asia Environment and Sustainable Development,Buffalo State, State University of New York, USA *(Email: [email_address] ) 2) Environmental Engineering and Management, Asian Institute of Technology, Thailand](https://image.slidesharecdn.com/surfacewaterqualityoldversion97-13308422299321-phpapp02-120304002807-phpapp02/85/Surface-Water-Quality-in-Thailand-1-320.jpg)
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Similaire à Surface Water Quality in Thailand
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Surface Water Quality in Thailand
- 1. J.Price 1 , T.Chaosakul 2 , N.Surinkul 2 , J.Bowles 2 , S.Rattanakul 2 , N.Pradhan,W.Simphan 2 , A.Ghimire 2 , K.Wilaingam 2 , L.M. Truong 2 , T.V. Nguyen 2 , T.Pussayanavin 2 , N.Proysurin 2 , S.Singjan 2 , V.Longaphai 2 , S.N.Kalaimathy 2 , T.Koottatep 2 , K.N.Irvine 1 1 ) Geography and Urban Planning and Center for Southeast Asia Environment and Sustainable Development,Buffalo State, State University of New York, USA *(Email: [email_address] ) 2) Environmental Engineering and Management, Asian Institute of Technology, Thailand
- 5. BEFORE FLOODING AFTER FLOODING Rangsit Canal
- 8. Boeng Yai Boeng Yai Rangsit Canal Downstream Upstream Informal houses Pump Station
- 19. Clay Tank Piped Water Filter Box 3 informal houses 800 CFU/ 100ml 200 CFU / 100 ml 60 CFU/ 100 ml 0 CFU/ 100 ml
Notes de l'éditeur
- Water quality measurements : biological and chemical ( E.coli. BOD, COD and dissolved oxygen) Metabolism characteristcs: photosynthesis , respiration, reareration, trophic status
- Significance of Rangsit Canal : history
- Due to moonsoon rains, impervious areas, flat terrain, CSOs that are not properly sloped
- Site 6 lowest metals Site 2 highest metals( Cd, Cr,Ni,Pb,D.O;Mn,BOD) pesticides, benthic organisms and metals &analyzed for metals
- Seven Sites were chosen for water sampling. Sewershed 0.92 sqft
- Are first initiative was to install a YSI at one of the informal houses because it was a perfect location in the Rangsit Canal. Avg temp ( ?)
- Next step was to collect water samples once/twice a week or when it rained.
- COD is the total measurement of all chemicals in the water that can be oxidized. BOD measures the amount of organics that bacteria can oxidize
- Prerequiste for microbial risk analysis. Water is supplied by the municipality
- P(t) plant primary productivity
- It may seem unusual the Rangsit Canal is heterotrophic considering the amount of discharge from the CSOs, but Odum (1956) showed that respiratory metabolism can far exceed primary production up to 32 km downstream of a major sewage outfall, as the sewage decomposes. His study also showed that primary production then can rise rapidly due to increased organic growth.
- Pump Station
- Using the Geometric mean ( which is more accurate?)
- You have a greater chance of getting an infection than getting diarrhea
- n=4 for cod, DO and orp except for PS1 canal (1) n=3 BOD except PS1 (1). Due to high levels of BOD it consumed a lot of oxygen decreasing DO levels in Rangsit Canal.