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There is acid potassium dichromate solution in the wastewater of an electroplating plant

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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There is acid potassium dichromate solution in the wastewater of an electroplating plant
Disposal of high-arsenic waste acid by the stepwise ...
Disposal of high-arsenic waste acid by the stepwise ...

The arsenic concentrations for the waste acid usually range, from 0.5 to 30 g L−1 with sulfuric acid concentrations ranged from 10 to 200 g, L−1, which is the most crucial arsenic waste because of its high arsenic mobility and toxicity.3–5 Even a slight leakage of high-arsenic waste acid will cause serious arsenic pollution as well as widely safety and environmental concern.6,7

Removal of Arsenic from Strongly Acidic Wastewater Using ...
Removal of Arsenic from Strongly Acidic Wastewater Using ...

Strongly, acidic wastewater, (H 2 SO 4) with a, high arsenic concentration, is produced by many industries. The removal of arsenic by traditional sulfide (e.g., Na 2 S, FeS) from strongly, acidic wastewater, introduces cations (Na + and Fe 2+ ) to the solution, which may prevent the recycle of acid.

Hydrothermal Treatment of Arsenic Sulfide Residues from ...
Hydrothermal Treatment of Arsenic Sulfide Residues from ...

acid [7]. Moreover, wasted electrolyte with a high concentration of arsenic is produced abundantly in, copper, and lead-zinc electrolyte processes [8,9]. At present, there are many treatment methods for arsenic-containing wastewater, such as precipitation, adsorption, and biological methods [10–14].

Treatment of wastewater containing arsenic using Rhazya ...
Treatment of wastewater containing arsenic using Rhazya ...

15/10/2013, · ,Arsenic, (As) contamination has received widespread attention owing to its ,high, toxicity to plants, animals and humans as inorganic arsenicals are proven carcinogens to human (Ng 2005). It is a member of the nitrogen family with both metallic and nonmetallic properties, and is ubiquitous in the environment (soil, water, air and also in living matters) (Tamaki and Frankenberger 1992 ).

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