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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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oil and gas leases
Industrial Waste Treatment Plant (Project) | Sewage ...
Industrial Waste Treatment Plant (Project) | Sewage ...

Electroplating Acid,/alkaline Metal ion- ,Acid,/alkaline Metal ... Precious metal wastes ,can be treated, using the same treatment alternatives as those described forth treatment of common metals wastes. ... Metal precipitation Hydroxide ,Hydrated lime, Variable pH = 7.0-10.0 20 Optimum pH varies depending on metal to be removed.

Change Hexavalent to trivalent chrome at high pH using ...
Change Hexavalent to trivalent chrome at high pH using ...

8/8/2009, · Then raise the pH to about 8.5-9.0 ,with hydrated lime, and filter out / settle out any sediment/precipitate before discharging the water. There may be local or national regulations prohibiting you from doing this, but neutralizing hex chrome with metabisulphite seems far …

Subject: MANAGEMENT OF AIRPORT INDUSTRIAL WASTE
Subject: MANAGEMENT OF AIRPORT INDUSTRIAL WASTE

Pickling Acids. ,Acid, wastes from metal pickling and finishing operations usually present the greatest problems. The various acids used in the pickling process are sulfuric, nitric, hydrochloric, and phosphoric, with sulfuric ,acid, being the most commonly used. Quick ,lime, and ,hydrated lime, are the alkaline neutralizing agents most commonly used.

WASTEWATER COAGULATION - جامعة نزوى
WASTEWATER COAGULATION - جامعة نزوى

If the alkalinity of the water is insufficient, slaked or ,hydrated lime, (Ca(OH)2) is added. The optimum pH is in the range 4.5 – 8 as the aluminium hydroxide is relatively insoluble in this range. Various ,hydrated, forms of aluminium sulphate are available. (1) Powder granules Bulk density 910 kg m(1 e.g. (Al2(SO4)3.14H2O

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