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Environmental impact assessment of fracturing flowback fluid

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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Environmental impact assessment of fracturing flowback fluid
Wastewater Treatment Fact Sheet: External Carbon Sources ...
Wastewater Treatment Fact Sheet: External Carbon Sources ...

External supplemental carbon sources are brought into the ,wastewater, treatment process usually as pure compounds or high strength waste materials where concentrations can be as high as 1.5 g/L ,chemical oxygen demand, (,COD,) to facilitate nutrient removal.

Chemical aspects of peracetic acid based wastewater ...
Chemical aspects of peracetic acid based wastewater ...

wastewater, effluent within a pilot scale set-up. The following chemical parameters were monitored before and after the disin-fection process: ,chemical oxygen demand, (,COD, Cr), biochemical oxygen demand (BOD 7, ATU), pH, oxidation–reduction potential (ORP) and, finally, residual PAA and hydrogen peroxide concen-trations.

Wastewater COD removal using sol-gel immobilized humic acid
Wastewater COD removal using sol-gel immobilized humic acid

humic ,acid, Rafik Helles Department of Chemistry, Alaqsa University, Gaza, Palestine. Accepted March 3, 2010 In this study, humic ,acid, which contains both hydrophobic and hydrophilic moieties is successfully entrapped in sol-gel matrix which is used to reduce the ,chemical oxygen demand, (,COD,) of Gaza ,wastewater,. The method

Understanding Laboratory Wastewater Tests: I. ORGANICS ...
Understanding Laboratory Wastewater Tests: I. ORGANICS ...

matter have traditionally been used to determine the relative “strength” of a ,wastewater, sample. Today there are four common laboratory tests used to determine the gross amount of organic matter (i.e., concentrations > 1.0 mg/L) in ,waste-water,: 1. BOD (biochemical oxygen demand) - See Page 3. 2. ,COD, (,chemical oxygen demand,) - See Page 5. 3.

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