Solution for heavy metal wastewater

Heavy metal wastewater generally comes from industries such as mining, metal smelting and processing, electroplating, leather making, pesticides, papermaking, painting, printing and dyeing, nuclear technology, and petrochemicals. Heavy metals are difficult to biodegrade and are easily absorbed and enriched by organisms. Their toxicity is persistent and they are a highly potential hazardous pollutant. The treatment processes for heavy metal wastewater include chemical precipitation, physical adsorption, ion exchange, and phytoremediation. For heavy metal wastewater with high recycling value or concentration, chemical precipitation or membrane method can be used to concentrate and recover the heavy metals.