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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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wastewater treatment facility cost
Treatment of wastewater - Soane Energy LLC
Treatment of wastewater - Soane Energy LLC

A method of removing contaminants from frac flowback water or oilfield produced water, wherein the contaminants comprise dissolved iron, suspended solids, and oil, and further wherein the dissolved iron comprises ferrous iron, said method comprising the steps of: contacting the water with an oxidizing agent wherein the oxidizing agent oxidizes the ferrous iron to form precipitated ferric iron, and …

Denitrifying biofilm processes for wastewater treatment ...
Denitrifying biofilm processes for wastewater treatment ...

The organisms involved in autotrophic denitrification use hydrogen (H 2), sulfur, ,iron,, pyrite or arsenite as an energy source and carbon dioxide (CO 2) or bicarbonate (HCO 3 −) as a carbon source. 15,16 H 2-Based and sulfur-driven autotrophic denitrification are the most widely applied processes to remove NO x from ,wastewater, with low carbon to nitrogen (C/N) ratios. 17,18 Studies regarding ...

Principle and Process of Heavy Metal Removal from Sewage ...
Principle and Process of Heavy Metal Removal from Sewage ...

This study shows that heavy metals in ,sewage sludge, can be removed easily by ,treating, a sludge filter cake with phosphoric ,acid, containing hydrogen peroxide for 1 h at room temperature. Phosphoric ,acid, of 8% concentration with hydrogen peroxide showed good removal rates of heavy metals comparable to those by 1 N hydrochloric ,acid,.

Photocatalytic Degradation of Wastewater by Molecularly ...
Photocatalytic Degradation of Wastewater by Molecularly ...

27/1/2020, · The obtained ,powder, was characterized by XRD and other ... activity of pure TiO 2, thereby enhancing its capability ,of treating wastewater, ... ,acid, (EDTA) is a widely ...

water treatment - coagulation-flocculation typical ...
water treatment - coagulation-flocculation typical ...

crystallised ,iron, sulphate Fe 2 (SO 4) 3 in ,powder, form, 9H 2 O and even chlorinated copperas; ferrous sulphate FeSO 4 in ,powder, form, 7H 2 O; however, this reagent has to be oxidised (Fe 2+ Fe 3+ ), often by Cℓ 2 , before use at a pH close to neutral; furthermore, FeSO 4 , an industrial by-product, is rarely of the grade required for drinking water or even industrial water processing.

Photocatalytic Degradation of Wastewater by Molecularly ...
Photocatalytic Degradation of Wastewater by Molecularly ...

27/1/2020, · The obtained ,powder, was characterized by XRD and other ... activity of pure TiO 2, thereby enhancing its capability ,of treating wastewater, ... ,acid, (EDTA) is a widely ...

Quick lessons on environmental nanotech | Nature ...
Quick lessons on environmental nanotech | Nature ...

The process ,of treating, our ,wastewater, includes enormous quantities of ... Now another well-known ,principle,: a magnet attracts ,iron, particles. ... If the rust is milled to a fine ,powder,, ...

Principle and Process of Heavy Metal Removal from Sewage ...
Principle and Process of Heavy Metal Removal from Sewage ...

This study shows that heavy metals in ,sewage sludge, can be removed easily by ,treating, a sludge filter cake with phosphoric ,acid, containing hydrogen peroxide for 1 h at room temperature. Phosphoric ,acid, of 8% concentration with hydrogen peroxide showed good removal rates of heavy metals comparable to those by 1 N hydrochloric ,acid,.

(PDF) Treatment of Dairy Processing Wastewaters | chindia ...
(PDF) Treatment of Dairy Processing Wastewaters | chindia ...

Final wastewater polishing after biological treatment usually involves chemical treatment of the wastewater with calcium, iron, or aluminum salts to remove dissolved nutrients such as …

(PDF) Treatment of Dairy Processing Wastewaters | chindia ...
(PDF) Treatment of Dairy Processing Wastewaters | chindia ...

Final wastewater polishing after biological treatment usually involves chemical treatment of the wastewater with calcium, iron, or aluminum salts to remove dissolved nutrients such as …

Method for stabilization of hazardous wastes with dilute ...
Method for stabilization of hazardous wastes with dilute ...

U.S. Pat. No. 5,037,479 discloses a method for ,treating, highly hazardous waste containing unacceptable levels of TCLP Pb such as lead by mixing the solid waste with a buffering agent selected from the group consisting of magnesium oxide, magnesium hydroxide, reactive calcium carbonates and reactive magnesium carbonates with an additional agent which is either an ,acid, or salt containing an anion …

Methods for Chemical Analysis of Water and Wastes
Methods for Chemical Analysis of Water and Wastes

----- water, 1 1 hydrochloric ,acid,, tap water and finally deionized distilled water in that order NOTE 1: Chromic ,acid, may be useful to remove organic deposits from glassware, however, the analyst should be cautioned that the glassware must be thoroughly rinsed with water to remove the last traces of chromium This is especially important if chromium is to be included in the analytical scheme A commercial …

Method for stabilization of hazardous wastes with dilute ...
Method for stabilization of hazardous wastes with dilute ...

U.S. Pat. No. 5,037,479 discloses a method for ,treating, highly hazardous waste containing unacceptable levels of TCLP Pb such as lead by mixing the solid waste with a buffering agent selected from the group consisting of magnesium oxide, magnesium hydroxide, reactive calcium carbonates and reactive magnesium carbonates with an additional agent which is either an ,acid, …

Enhanced water treatment by Moringa oleifera seeds extract ...
Enhanced water treatment by Moringa oleifera seeds extract ...

The objectives of this study were: (1) to analyse the influence of extracted forms Moringa oleifera as a coagulant, and to characterize the Moringa oleifera extract ,powder, by its chemical constituents; (2) to compare the effect on turbidity, COD and E. coli removal in lake water and municipal ,wastewater, between the Moringa oleifera extract and the conventional coagulant PAC; and (3) …

water treatment - coagulation-flocculation typical ...
water treatment - coagulation-flocculation typical ...

crystallised ,iron, sulphate Fe 2 (SO 4) 3 in ,powder, form, 9H 2 O and even chlorinated copperas; ferrous sulphate FeSO 4 in ,powder, form, 7H 2 O; however, this reagent has to be oxidised (Fe 2+ Fe 3+ ), often by Cℓ 2 , before use at a pH close to neutral; furthermore, FeSO 4 , an industrial by-product, is rarely of the grade required for drinking water or even industrial water processing.

Treatment of wastewater - Soane Energy LLC
Treatment of wastewater - Soane Energy LLC

A method of removing contaminants from frac flowback water or oilfield produced water, wherein the contaminants comprise dissolved iron, suspended solids, and oil, and further wherein the dissolved iron comprises ferrous iron, said method comprising the steps of: contacting the water with an oxidizing agent wherein the oxidizing agent oxidizes the ferrous iron to form precipitated ferric iron, and …

ADSORPTION OF TOXICANTS (CHROMIUM IRON AND OXALIC ACID …
ADSORPTION OF TOXICANTS (CHROMIUM IRON AND OXALIC ACID …

weight ratio and then vaccum filtered. The mixture of ,powder, and sulphuric ,acid, was then dried in oven at 150oC for 24 hours. The carbonized material was then washed with distilled water to remove free acids and then dried in hot air oven at 150oC for 3 hours to form activated carbon. Fig 2.2: Tamarind seed ,powder

Methods for Chemical Analysis of Water and Wastes
Methods for Chemical Analysis of Water and Wastes

----- water, 1 1 hydrochloric ,acid,, tap water and finally deionized distilled water in that order NOTE 1: Chromic ,acid, may be useful to remove organic deposits from glassware, however, the analyst should be cautioned that the glassware must be thoroughly rinsed with water to remove the last traces of chromium This is especially important if chromium is to be included in the analytical …

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