Heavy metal waste water mainly from mining, smelting, electrolysis, electroplating, pesticides, pharmaceuticals, paints, pigments and other waste water discharged from enterprises.

waste water features

Heavy metal pollutants can not be characterized by microbial degradation,   it is the most serious when it shows in  metal ions in toxic ionic state .the metal ions are likely to be absorpted by negative charged colloidal in water.The adsorpted metal ions colloid can migrate with water gel , but most of them will quickly settle , and gathering in biology, which will be harmful to organisms, and do harm to the human body through the food chain. When the heavy metals enter the human body, it has chemical raction with physiological polymer material and make them unactived, it  may also accumulated in human body and lead chronic poison

 Teatment thinking
For the heavy metal wastewater, because of its huge damage to natural environment, the treatment of waste water caused a great attention from abroad and at home and various treatment technology was carried out. By the treatment measures, the toxic will be turned to non-toxic, the hazardous will be turned to harmlessness. Make the purified water cycling use, and recover the expensive heavy metal to eliminate and reduce the heavy metal discharge.

Typical treatment craft
1.The methods of neutralize  precipitation, sulfide precipitation, float separation, electro-deposition (or floating), diaphragm electrolysis, etc.;
2.Reverse osmosis, electrodialysis, evaporation and ion-exchange method