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Electrolytic treatment of acid chromium containing wastewater

Established in 2001, Puyang Zhong Yuan Restar Petroleum Equipment Co.,Ltd, “RSD” for short, is Henan’s high-tech enterprise with intellectual property advantages and independent legal person qualification. With registered capital of RMB 50 million, the Company has two subsidiaries-Henan Restar Separation Equipment Technology Co., Ltd We are mainly specialized in R&D, production and service of various intelligent separation and control systems in oil&gas drilling,engineering environmental protection and mining industries.We always take the lead in Chinese market shares of drilling fluid shale shaker for many years. Our products have been exported more than 20 countries and always extensively praised by customers. We are Class I network supplier of Sinopec,CNPC and CNOOC and registered supplier of ONGC, OIL India,KOC. High quality and international standard products make us gain many Large-scale drilling fluids recycling systems for Saudi Aramco and Gazprom projects.

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Electrolytic treatment of acid chromium containing wastewater
REMOVAL OF HEXAVALENT CHROMIUM FROM ELECTROPLATING ...
REMOVAL OF HEXAVALENT CHROMIUM FROM ELECTROPLATING ...

2-ions in ,acidic, medium according to reaction (1), as already stated. The generated H 2 gas produced at the cathode can remove dissolved organics or any suspended material by flotation. Furthermore, Fe3+ ions undergo hydration and give, depending on pH, cationic species such as Fe(OH)2+, Fe(OH) 2 2+ in ,acidic, conditions, Fe(OH) 3 in neutral

Characterization and Treatment of Real Wastewater from an ...
Characterization and Treatment of Real Wastewater from an ...

23/5/2019, · The rejection of the stage of ,electroplating, deposit contains widely metals and the following anions: BO 3−, CO 2− 3, Cr 2 O 2− 7, F −, PO 4 3−, Cl −, NO −3 and SO 4 2−. Generally, ,wastewater, contains many heavy metals. The most important of cations are Cr 6+, it is reduced to Cr 3+, while CN-is oxidized in the preliminary ...

Characteristic Study of Electroplating and Dye Industrial ...
Characteristic Study of Electroplating and Dye Industrial ...

efficiencies is to be more than 90% but it is identified as the electroplating and dye industries effluent had a low treatment efficiencies of about only 80-85%. And the electroplating wastewater has more heavy metal which has more carcinogenic effects which causes various health problems. And also the effluent of dyes in waste water concentration

Wastewater treatment: a case study of electronics ...
Wastewater treatment: a case study of electronics ...

20/9/2018, · However, electroplating wastewater has low organic matter, but have a high toxicity. Among the prime contaminants in electroplating wastewater, cyanide and suspended metals are of great concern. To obtain high-quality electroplated products, cyanide is extensively used (Zhang et al. 2015 ), which results in the production of toxic wastewater which contains cyanide.

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