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Acid mine wastewater containing heavy metals

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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Acid mine wastewater containing heavy metals
Summary of the Technical Workshop on Wastewater Treatment ...
Summary of the Technical Workshop on Wastewater Treatment ...

Summary of Water Flow Rates during ,Flowback, and Produced Water Periods Water Category Average Maximum Typical ,Fracturing, Injection Water (gallons) 520,0000 9,000,000 6,500,000 ,Flowback, Water in First 1-3 Weeks % of Water Injected 8.9% 20.0% 10.0% ,Flowback, Cumulative 360,000 780,000 650,000 Produced Water (gpd/days to 1 mil gal) 21 days to 50 days 3652/273 12,713 6,300/ 158 50 days to 250 …

Journal of Water Process Engineering Journal Impact IF ...
Journal of Water Process Engineering Journal Impact IF ...

Biologically active filtration ,for fracturing flowback, and produced water treatment: Luxin Li · Zhimin Sun · Ruijian Zhang · Ruijian Zhang Modification of Gambier extracs as green inhibitor of calcium carbonate (CaCO3) scale formation: P Maharaja · Mahesh M · C Chitra · D Kalaivani · R Srividya · Swarnalatha S · G. Sekaran · G. Sekaran

Stepan Company - Onscope
Stepan Company - Onscope

Flowback, aid mixtures and oil-in-water microemulsions produced by combining an aqueous brine with the ,flowback, aid mixtures are disclosed. The ,flowback, aid mixture comprises an oil, a fatty alcohol ethoxylate, and a quaternized fatty amine ethoxylate. The amount of oil is less than or equal to 12 wt.% based on the amount of ,flowback, aid mixture.

Common Hydraulic Fracturing Fluid Additives Alter the ...
Common Hydraulic Fracturing Fluid Additives Alter the ...

15/4/2018, · Hydraulic ,fracturing fluid, (HFF), injected into the hydrocarbon-bearing formation during development, is a complex mixture composed of water, proppants used to maintain fractures, and additives to enhance the production (including lubricants, scale reducers, viscosity builders, and biocides to minimize biofouling and souring of the oil and/or gas [4, 11 – 17]).

Polyacrylamide degradation and its implications in ...
Polyacrylamide degradation and its implications in ...

7/9/2018, · High molecular weight (106–3 × 107 Da) ,polyacrylamide, (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and as a …

Biocides in Hydraulic Fracturing Fluids: A Critical Review ...
Biocides in Hydraulic Fracturing Fluids: A Critical Review ...

Biocides in Hydraulic ,Fracturing, Fluids: A Critical Review of Their Usage, Mobility, Degradation, and Toxicity

Enrichment Characterization and Identification of ...
Enrichment Characterization and Identification of ...

hydraulically fractured (Geologists, 2011). Hydraulic ,fracturing, is the process by which millions of gallons of water, propant, biocide and a proprietary blend of chemicals are pumped into the desired formation at extremely high pressures. In hydraulic ,fracturing,, water under high pressure further fractures the compact rock formation, which allows

Oil and Gas Production Wastewater: Soil Contamination and ...
Oil and Gas Production Wastewater: Soil Contamination and ...

Clean up cement and drilling mud before ,fracturing fluid, is injected and clear the path through the formation. Used later to dissolve minerals and clays to reduce clogging, allowing gas to flow to the surface: Hydrochloric acid

Paper No. 3879
Paper No. 3879

recover only a small percentage of the frac ,fluid, during the ,flowback, process, resulting in the need for thermally stable, sulfide-tolerant antimicrobial treatments that will provide long-term control over bacteria introduced during the ,fracturing, process and the indigenous bacteria often present in the

In situ transformation of ethoxylate and glycol ...
In situ transformation of ethoxylate and glycol ...

DOE PAGES Journal Article: In situ transformation of ethoxylate and glycol surfactants by shale-colonizing microorganisms during hydraulic ,fracturing

In situ transformation of ethoxylate and glycol ...
In situ transformation of ethoxylate and glycol ...

DOE PAGES Journal Article: In situ transformation of ethoxylate and glycol surfactants by shale-colonizing microorganisms during hydraulic ,fracturing

Polyacrylamide degradation and its implications in ...
Polyacrylamide degradation and its implications in ...

7/9/2018, · Freedman, D. E. et al. Biologically active filtration ,for fracturing flowback, and produced water treatment. J. Water Process Eng. 18, 29–40 (2017). Article Google Scholar 130.

Enrichment Characterization and Identification of ...
Enrichment Characterization and Identification of ...

hydraulically fractured (Geologists, 2011). Hydraulic ,fracturing, is the process by which millions of gallons of water, propant, biocide and a proprietary blend of chemicals are pumped into the desired formation at extremely high pressures. In hydraulic ,fracturing,, water under high pressure further fractures the compact rock formation, which allows

Enrichment Characterization and Identification of ...
Enrichment Characterization and Identification of ...

hydraulically fractured (Geologists, 2011). Hydraulic ,fracturing, is the process by which millions of gallons of water, propant, biocide and a proprietary blend of chemicals are pumped into the desired formation at extremely high pressures. In hydraulic ,fracturing,, water under high pressure further fractures the compact rock formation, which allows

Hazardous waste treatment technologies - Wang - 2019 ...
Hazardous waste treatment technologies - Wang - 2019 ...

Kong, Sun, et al. investigated the desalination of shale‐gas ,fracturing flowback, water (SGFFW) by the nanofiltration (NF) and reverse osmosis (RO) process. Results showed RO exhibited higher Na + and Cl − ion removal efficiency than NF.

Sulfide Generation by Dominant Halanaerobium ...
Sulfide Generation by Dominant Halanaerobium ...

Halanaerobium, WG8 was incubated in liquid ,medium, described above with alterations of Na 2 S 2 O 3 ⋅ 5H 2 O at 1 mM and no cysteine-HCl. Cells in this ,medium, were incubated for 10 days at 40°C in the dark. Sulfide production was tracked by using 72 individual anaerobic ,Halanaerobium, enrichments set up with the liquid ,medium, described above.

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