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hydraulic fracking to extract oil and natural gas resources gas

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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hydraulic fracking to extract oil and natural gas resources gas
Device for recovering sodium chemicals from green liquor ...
Device for recovering sodium chemicals from green liquor ...

The invention relates to a method ,for recovering sodium chemicals from green liquor, by precarbonating green ,liquor, by means of flue gases, by bringing a precarbonated solution into contact with a sodium bicarbonate solution and by stripping hydrogen sulphide from the so obtained ,reaction, mixture by means of steam, for producing hydrogen sulphide gas and a sodium carbonate solution, …

Biological and Chemical Wastewater Treatment Processes ...
Biological and Chemical Wastewater Treatment Processes ...

2/12/2014, · Mixed ,liquor, is a mixture of raw ,wastewater, and activated sludge in an aeration tank. MLSS consists mainly of microorganisms and non-biodegradable suspended solids. MLSS is the effective and active portion of the activated sludge process that ensures that there is adequate quantity of viable biomass available to degrade the supplied quantity of organic pollutants at any time.

Detailed Modeling of Kraft Pulping Chemistry ...
Detailed Modeling of Kraft Pulping Chemistry ...

Addnl., at high ,alkali, compared to moderate ,alkali, concn., lower amts. of low mol. wt. carboxylic acids originating from the degrdn. of carbohydrates were detected in spent black ,liquor,. The presence of AQ provided significant hemicellulose stabilization against endwise degrdn. reactions, being more pronounced at moderate 0.50 M concn. than at 1.55 M hydroxyl ion concn.

Detection Control and Correction of Hydrogen Sulfide ...
Detection Control and Correction of Hydrogen Sulfide ...

Sulfide, can still be produced within the slime layer, but if dissolved oxygen is present, ,sulfide, will be oxidized as it passes into an aerobic environment If dissolved oxygen is not present, dissolved ,sulfide, will enter the bulk ,wastewater, where it can be present as dissolved hydrogen ,sulfide, gas (H2S).

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