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How to treat acid cleaning 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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How to treat acid cleaning wastewater
Water hyacinth biochar for trivalent chromium adsorption ...
Water hyacinth biochar for trivalent chromium adsorption ...

1/2/2020, · Hashem et al. (2015) showed that the amount of, chrom,ium, in the discharged chrome tanning wastewater ranged between 2656 and 5420 ​mg/L., The universal oxidative states of chromium are trivalent and hexavalent. Levis et al. (1978) reported that within the cell Cr (III) unites to nucleotide bases in DNA to provide genotoxic effects.

Chemical precipitation method for chromium removal and its ...
Chemical precipitation method for chromium removal and its ...

Chromium(III) salts are the most widely used chemicals for, tanning, processes, but only about 60-70% of total, chromium, salts reacts with the hides and about 30-40% of the, chromium, remain in the solids and liquid, wastes, (especially spent, tanning, solutions).

Chromium Removal from Wastewater by Reverse Osmosis
Chromium Removal from Wastewater by Reverse Osmosis

study describes the removal of ,chromium, from ,wastewater, using pressure-driven membrane separation processes. It describes the rejection of ,trivalent chromium, using a commercial membrane for reverse osmosis typed RO98pHt (Alfa Laval, Sweden). Model solutions of ,chromium, were used for performing of separation experiments.

Methods of chromium and heavy metals removal from wastewater
Methods of chromium and heavy metals removal from wastewater

The reagent treatment of chromium containing wastewater restores the hexavalent chromium to trivalent and precipitates it. The reducing agents are sulfur (sodium sulfite, sodium bisulfite) copperas, scrap steel and others. In practice there are two methods of wastewater treatment to remove chrome:

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