Heavy metal industry origin
Wastewater As the glass industry, production of fertilizers
Cd Metallurgy, electroplating, dye factories, waste steam containing Cd
Cu Metallurgy, beverage manufacturing industry, producing pesticides animals (PPD)
Cr Luy Metallurgy, plating, printing workshop and dyeing wastewater
factory Hg compounds containing mercury, pesticides containing mercury
metallurgical wastewater, pesticides, factory battery, battery, exhaust containing Pb
Zn metallurgical wastewater, textile mill, agricultural chemicals and phosphate containing Zn
Ni metallurgical wastewater, plating, train oil, dyes
F Water discharge phosphate production
and alkali wastewater paper mills, factories chemical
acid wastewater sulfuric acid production plant, rock oil, electroplating
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