When contacted, principal secretary, environment and forests, S K Nanda said, “BOD and COD are down from 2,500 to 500 within a year.” BOD and COD tests are a measure of the relative oxygen-depletion effect of a waste contaminant. Both have been widely adopted as a measure of pollution effect. The BOD test measures the oxygen demand of biodegradable pollutants, whereas the COD test measures the oxygen demand of biodegradable pollutants plus the oxygen demand of non-biodegradable oxidizable pollutants.
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Links:
[1] http://admin.indiaenvironmentportal.org.in/news/lift-ban-industries-ankleshwar-guj-centre
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-ahmedabad
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bharuch
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/central-pollution-control-board-cpcb
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/biodegradable-waste
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/non-biodegradable-waste
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/industry
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/industrial-pollution
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/hazardous-waste
