[vc_row][vc_column][vc_single_image image=”1007″ img_size=”full” alignment=”center”][vc_row_inner][vc_column_inner][vc_empty_space][vc_column_text]<\/p>\n
Tanning industry, one of the oldest industries in the world is also one of the most polluting and produces wide varieties of high strength toxic chemicals. Tanneries are identified by Ministry of Environment & Forests, Govt. of India as heavily polluting (Red category) and covered under Central Action Plan.\u00a0Large quantity of water is used in tanning process of which 90% of the water is discharged as effluent.<\/p>\n
There is a common misconception that vegetable tanning is environmentally harmless. In reality effluents from vegetable tanning have very high Chemical Oxygen Demand (COD), which is\u00a0difficult to treat. This post focuses on combined chrome tanning, which is by far the most prevailing leather tanning method.<\/p>\n
[\/vc_column_text][vc_empty_space height=”40px”][vc_column_text]<\/p>\n
[\/vc_column_text][vc_single_image image=”1011″ img_size=”full” alignment=”center”][\/vc_column_inner][\/vc_row_inner][vc_column_text]<\/p>\n
It is recognized as a serious environmental threat due to high chemical levels including salinity, organic load (chemical oxygen demand, biochemical oxygen demand), inorganic matter, dissolved, suspended solids, ammonia, total kjeldahl nitrogen (TKN), specific pollutants (sulfide, chromium, chloride, sodium and other salt residues), heavy metals etc.\u00a0 During the chrome tanning process, 40% unused chromium salts are usually discharged in the final effluents, causing a serious threat to the environment.\u00a0Exposure to chromium, pentachlorophenol and other toxic pollutants increase the risk of dermatitis, ulcer nasal septum perforation and lung cancer.<\/p>\n
[\/vc_column_text][vc_empty_space height=”40px”][vc_column_text]<\/p>\n
[\/vc_column_text][vc_column_text]<\/p>\n