Tannery waste contains a complex mix of chemicals used in processing animal hides, many of which are persistent and harmful to the environment and human health, making it one of the most chemically polluting industries.
The highest chemical pollution is caused by the industrial effluents of
Asked in UPPCS Prelims 2005 · Topic: Pollution (Water Pollution: Sources, common pollutants, water quality indicators (BOD, COD, DO), effects, control measures.)
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