How to treat wastewater from surface treatment industry?

Chelation precipitation method can be used, and a proper amount of heavy metal collector M 1 can be added to generate linear chelate precipitation, and the dissolved heavy metals can be removed by precipitation. When treating wastewater containing heavy metals, the heavy metal collector adopts grafting synthesis process, and the chelating groups on its branches can chelate heavy metals, form stable insoluble substances and precipitate. The reaction can not only be carried out in a wide pH range, but also be unaffected by the concentration of heavy metal ions.