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Treatment of acid wastewater containing hexavalent chromium

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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Treatment of acid wastewater containing hexavalent chromium
Water obtained by processing the electrolysis in the ...
Water obtained by processing the electrolysis in the ...

Water receive treatment by ,electrolysis, in the cathode chamber water of 0.0001 to 0.02 n NaOH solution. An aqueous solution of NaOH served in the cathode and anode chamber of the electrolytic cell separated by a ,diaphragm,, carry out the ,electrolysis, of an aqueous solution and divert the water obtained in the cathode chamber.

Critical Review—The Versatile Plane Parallel Electrode ...
Critical Review—The Versatile Plane Parallel Electrode ...

31/1/2020, · Recycling of spent chromic acid electroplating and etching solutions in the metal finishing industry by combining anodic Cr(III) oxidation with cathodic removal of contaminant metals such as copper, iron and zinc in a membrane divided cell to exploit cathodic metal deposition and electrodialysis. 27 During use, hexavalent chromium anions can be degraded to Cr 3+ cations.

Cüneyt Arslan | Istanbul Technical University - Academia.edu
Cüneyt Arslan | Istanbul Technical University - Academia.edu

The factors affecting the anodic processes in the electrowinning of chromium were investigated by carrying out electrolysis experiments with a chromium ammonium sulfate solution in a laboratory-scale cell of approximately 90 ml equipped with a diaphragm.

Process for the utilization of vanadium bound in chromium ...
Process for the utilization of vanadium bound in chromium ...

Process for recovering the vanadium present in the ,chromium, ore chromite, as vanadium pentoxide, as a by-product from the vanadium-containing sodium chromate solution produced in the process of preparing sodium chromate and sodium dichromate from said ore, by precipitation of calcium vanadate from the sodium chromate solution, treatment of the precipitate with water and sodium carbonate ...

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