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fracturing flow-back fluids separation treatment techniques

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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fracturing flow-back fluids separation treatment techniques
The reduction of hexavalent chromium by sulphite in wastewater
The reduction of hexavalent chromium by sulphite in wastewater

The results clearly indicated that sulphite would be a suitable reductant for Cr(VI) in ,wastewater under, specific conditions (2.0 ≤ pH(initial) ≤ 5.0 and [sulphite] = 5 x [Cr(VI)](initial)). …

US4705639A - Ferrous and sulfide treatment of ...
US4705639A - Ferrous and sulfide treatment of ...

This method produces approximately, one-fourth the sludge generated, by the previously known, acidic reaction, treatment using only ferrous sulfide. The present invention involves a treatment technique...

Simultaneous removal of chromium and arsenate from ...
Simultaneous removal of chromium and arsenate from ...

1/3/2011, · The presence of 10 µmol/L arsenate caused more significant decrease in No. 3 Simultaneous removal, of, chr,omium and arsenate, from contaminated groundwater by, ferrous sulfate:, Batch uptake behavior 379 chromium removal under neutral and alkaline conditions than that, under acidic conditions,, but the decrease could be alleviated by increasing Fe(II) dosage.

Ferrous and sulfide treatment of electroplating wastewater ...
Ferrous and sulfide treatment of electroplating wastewater ...

The invention is carried into effect by treating the contaminated wastewater with a combination of chemical treating agents which include the steps of adding ferrous ions and sulfide ions to bring about the simultaneous reduction of, hexavalent chrom,ium contaminants and the precipitation of heavy metal contaminants, such as, copper,,, cadmium, and, nickel,, in the form of a sludge in considerably lesser …

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