Arsenic level in the surface wastewaters of Kolkata and its implication on sewage-fed fisheries
Arsenic pollution is a major threat in eastern India and Bangladesh. In Kolkata, sewage-fed fishery is a very popular culture. Wastewater of Kolkata city is diluted with freshwater and used in sewage-fed fish ponds. In the present study the arsenic concentration in the surface wastewater from forty-four different places of southern, eastern, western and norther parts of Kolkata was estimated. In fifteen places, the arsenic level was higher than the allowed limit (0.20 mg/l). But the arsenic level in the waters, sediment of fish culture ponds and in fish flesh of sewage-fed fisheries of Kolkata was below the maximum limit. So, till date there is no threat from arsenic pollution to the sewage-fed fisheries of Kolkata.
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | article biblioteca |
| Language: | English |
| Published: |
2005
|
| Subjects: | Pollution, arsenic, surface wastewaters, sewage-fed fisheries, Kolkata, West Bengal, India, |
| Online Access: | http://hdl.handle.net/1834/33131 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Arsenic pollution is a major threat in eastern India and Bangladesh. In Kolkata, sewage-fed fishery is a very popular culture. Wastewater of Kolkata city is diluted with freshwater and used in sewage-fed fish ponds. In the present study the arsenic concentration in the surface wastewater from forty-four different places of southern, eastern, western and norther parts of Kolkata was estimated. In fifteen places, the arsenic level was higher than the allowed limit (0.20 mg/l). But the arsenic level in the waters, sediment of fish culture ponds and in fish flesh of sewage-fed fisheries of Kolkata was below the maximum limit. So, till date there is no threat from arsenic pollution to the sewage-fed fisheries of Kolkata. |
|---|