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Acidity of wastewater containing Cr2O7

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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Acidity of wastewater containing Cr2O7
Process control design and analysis for wastewater ...
Process control design and analysis for wastewater ...

Process control design and analysis for ,wastewater, disinfection, stream ,neutralization,, and run-to-run strategies Creator: Meredith, Christopher Edward Publication Date: …

Efficient Synthesis of α-FeOOH from Pickling Wastewater in ...
Efficient Synthesis of α-FeOOH from Pickling Wastewater in ...

Millions of tons of pickling ,wastewater, are generated every year, and the most commonly used method for industrial treatment of pickling ,wastewater, is the ,neutralization, method, which will cause huge consumption and secondary pollutants. 27,28 More attention has been paid to the recovery and utilization ,of acid, pickling ,wastewater,, such as recovery of HCl by membrane distillation. 29,30 In ...

Methane recovery from acidic tofu wastewater using an ...
Methane recovery from acidic tofu wastewater using an ...

3/1/2021, · For this, anaerobic treatment of tofu ,processing wastewater, using a fixed-bed reactor employing cut bamboo as the carrier was examined and compared to an upflow anaerobic sludge blanket reactor. Without ,neutralization,, the fixed-bed reactor outperformed the upflow anaerobic sludge blanket reactor at a chemical oxygen demand load of 4.3 kg chemical oxygen demand/m 3 day.

Disposal of high-arsenic waste acid by the stepwise ...
Disposal of high-arsenic waste acid by the stepwise ...

Neutralization, and sulfurization processes are typical processes to treat the high-arsenic waste ,acid,. 1,3 In ,neutralization, process, arsenic in the waste ,acid, is transformed into solid hazardous waste composed of calcium arsenate/arsenite, gypsum and other compounds by using Ca-containing compounds (CaO, Ca(OH) 2 and CaCO 3) as precipitators. 8 When sulfides (Na 2 S and H 2 S) are used to ...

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