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After crossing two small ponds waste water passes through a bed …

by RANU GHOSH

WB000405

After crossing two small ponds waste water passes through a bed of water hyacinth-this a 1200 ft. Long hyacinth bed. Sewage water of about 200 BOD unit-bring down to about 80 BOD unit.

February, 1993 , Kolkata , West Bengal

Water Pollution Control , Hyacinth , Kolkata , West Bengal ,

© Copyright Centre for Science Environment 2016. All rights reserved.

© Copyright Centre for Science Environment 2016. All rights reserved.