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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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Wetland Use in Acid Mine Drainage Remediation
Wetland Use in Acid Mine Drainage Remediation

20/11/2005, · lime (calcium carbonate) raises the pH of the wastewater by reacting with hydronion ions (Equations 12 & 13). Lime also adds alkalinity to the water by producing bicarbonate ions (Costello 2003, Younger et al., 2002). One option is to use an anoxic limestone drain that adds alkali to the AMD but does not oxidize ferrous iron to form precipitates

Influence of the interaction of calcium carbonate ...
Influence of the interaction of calcium carbonate ...

6/6/2017, · The influence of the interaction of ,calcium carbonate, (CaCO3) and surface-active substances ... The influence of pesticides and ,metal, ions on surfactant toxicity is hard to ... of the nitrification braking in the presence of CaCO 3 is characteristic for the water in sections downstream of ,wastewater treatment, plants (WWTP) of cities.

Acid Mine Drainage Research Paper - 928 Words | Internet ...
Acid Mine Drainage Research Paper - 928 Words | Internet ...

9. ,Treatment of acid, mine drainage. 9.1. Active ,Treatment, Active ,treatment, involves addition of chemicals to the source of AMD and the stream contaminated by AMD, which raise the PH of the water and precipitate metals. However the chemicals are expensive and the ,treatment, facility is expensive to construct and operate [Skousen 20].

A Review of Anoxic Wastewater Treatment: An Overlooked ...
A Review of Anoxic Wastewater Treatment: An Overlooked ...

Phosphorus is removed from ,wastewater by adding, lime (CaO) or Ca(OH) 2). The lime first react with alkaline bicarbonate in the ,wastewater, to form ,calcium carbonate, (CaCO 3). Increase in the pH causes excess ions in the ,wastewater, to react with phosphate to form hydroxylapatite [Ca 5 (OH)(PO 4) 3] which is precipitated out as shown in Equation ...

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