Tianjin coconut shell activated carbon, coconut shell activated carbon factory in Tianjin, Tianjin price 010-57193076,13436502885 coconut shell activated carbon shell activated carbon treatment of wastewater containing chromium. Chrome plating in a larger amount of a metal material, hexavalent chromium in the waste water with pH values ??were different in different forms. Korea Research shell activated carbon has a very well-developed porous structure and high specific surface area, with a strong physical adsorption capacity, can effectively absorb wastewater Cr (Ⅵ). Nutshell activated carbon surface there is a lot of oxygen-containing groups such as hydroxy (-OH), carboxyl (-COOH), etc., they have electrostatic adsorption function of Cr (Ⅵ) chemical adsorption. Can be used in electroplating wastewater Cr (Ⅵ), water adsorption can meet the national emission standards. Tests showed that: the solution Cr (Ⅵ) concentration of 50mg / L, pH = 3, when the adsorption time 1.5h, shell activated carbon adsorption properties and Cr (Ⅵ) removal are the best results. Therefore, the use of shell activated carbon chromium-containing wastewater treatment process is the result of the combined effects of shell activated carbon solution Cr (Ⅵ) physical adsorption, chemisorption, chemical reduction, etc.. Shell activated carbon treatment of wastewater containing chromium, stable adsorption performance, high efficiency, low operating costs, there is a certain social and economic benefits. 2. shell activated carbon treatment of wastewater containing cyanide. In industrial production, gold and silver wet extraction, chemical fiber production, coke, ammonia, electroplating, gas production and other industries are using *** *** or byproduct, which during production is bound to emit a certain amount of wastewater containing cyanide. Shell activated carbon for the purification of waste water has a long history, used in treatment of wastewater containing cyanide reported more and more. But because CN_, small HCN adsorption capacity of the activated carbon shell, usually 3mgCN / gAC ~ 8mgCN / gAC because of different varieties, the processing costs uneconomical. 3. shell activated carbon treatment of wastewater containing mercury. There are performance shell activated carbon adsorption of mercury and mercury compounds, but the limited absorption capacity, suitable only for low mercury content in waste water treatment. If higher concentrations of mercury that can be treated by chemical precipitation, post-processing of mercury about 1mg / L, high up 2-3mg / L, and then use the shell activated carbon for further processing.