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Acid mine wastewater + arsenic

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 + arsenic
reaction between calcium phosphide with water
reaction between calcium phosphide with water

Rivers generally contain 1-2 ppm calcium, but in ,lime, areas rivers may contains calcium concentrations as high as 100 ppm. Writing calcium hydroxide + phosphoric ,acid, yield calcium phosphate + water in chemical ,equation, would be, #Ca(OH)_2 + H_3PO_4 -> Ca_3(PO_4)_2 + H_2O# but it …

Treatment of Fumaric Acid Wastewater Using Integrated ...
Treatment of Fumaric Acid Wastewater Using Integrated ...

In this paper, the integrated process of series connected, hollow-fiber, supported liquid, membrane-strip dispersion, (HFSLM-SD) with reverse osmosis (RO) was designed and used to recover fumaric acid (FA) from waste effluents and treat FA wastewater.

Reverse osmosis membrane treatment of acidic etchant ...
Reverse osmosis membrane treatment of acidic etchant ...

5/3/2008, · Abstract. The removal of nitrate from mixed, acid, etchant (MAE), wastewater, was investigated by neutralization, followed by reverse osmosis (,RO) membrane, filtration. The coating of a, RO membrane, was conducted using polyacrylic acid (PAA) in order to enhance the removal of nitrate from the MAE, wastewater.

Activated sludge process - SlideShare
Activated sludge process - SlideShare

Actual Oxygen Transfer Rate or Efficiency β is salinity – surface tension factor • Taken as saturation DO ratio of ,wastewater, to clean water • Typical value is 0.92 to 0.98 (0.95 is commonly used) α is oxygen transfer correction factor for the ,wastewater, • Typical range for diffused aeration systems is 0.4-0.8 • Typical range for mechanical aerators is 0.6-1.2 F is fouling factor ...

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