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Hydraulic Fracturing Companies

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 Fracturing Companies
Hexavalent Chromium Removal by Reduction with Ferrous ...
Hexavalent Chromium Removal by Reduction with Ferrous ...

Effect of Humic ,Acid, on the Removal of ,Chromium,(VI) ... chemical oxidation and biological aerated filter processes for ,treatment, of electroplating ,wastewater,. Separation Science and Technology 2015, 146 , 150610065847009. ... Detoxification of ,chromium,-,containing, slag by Achromobacter sp. CH-1 and selective recovery of ,chromium,.

15 types of industrial wastewater treatment processes ...
15 types of industrial wastewater treatment processes ...

8.Cyanide-,containing wastewater,. The cyanide-,containing wastewater, mainly comes from electroplating, coal gas, coking, metallurgy, metal processing, chemical fiber, plastic, pesticide, chemical and other departments. Cyanide-,containing wastewater, is a relatively toxic industrial ,wastewater,. It is unstable in water and easily decomposes.

Electrolytic removal of hexavalent chromium from aqueous ...
Electrolytic removal of hexavalent chromium from aqueous ...

Selvam Ramarajan, Duraisamy Tamilselvi, Muthunarayanan Vasanthy, ,Chromium, (VI) Reduction from Tannery ,Wastewater, and Aqueous Solutions by Adsorption and Biosorption, Waste Management and Resource Efficiency, 10.1007/978-981-10-7290-1, (1237-1251), (2019).

Seven Basic Principles Of Industrial Wastewater Treatment ...
Seven Basic Principles Of Industrial Wastewater Treatment ...

As industrial ,wastewater, has great impact on the environment and is difficult to treat, some basic principles should be followed in production and ,treatment,. These are summarized as follows: 1. The non-toxic production process should be selected as the first priority to replace or reform the backward production process, and the production of toxic and harmful ,wastewater, should be eliminated or ...

Frontiers | Comparative Study on Electrochemical Treatment ...
Frontiers | Comparative Study on Electrochemical Treatment ...

The electrochemical ,treatment, of ,wastewater, is widely used for cleaning due to its efficiency. In this paper, two-dimensional (2D) and three-dimensional (3D) electrochemical systems were used to treat cyanide ,wastewater,. The effect of the applied voltage and the material of the main electrode on the removal of various ions and the characteristics of chemical reactions were mainly studied.

Study of the electrocoagulation of electroplating industry ...
Study of the electrocoagulation of electroplating industry ...

the ,treatment, of various emissions : water washing [5], discharges of oil [6], water ,containing, metal ions such as arsenic [7-8], copper, lead, cadmium [9], iron [10,11], ,chromium, [12-14]. 1. Theory of electrocoagulation EC involves several chemical and physicochemical phenomena due to electrolysis. Generally three steps occur

(PDF) Electrocoagulation in Wastewater Treatment | Erick ...
(PDF) Electrocoagulation in Wastewater Treatment | Erick ...

Electrocoagulation in Wastewater Treatment,. Water, 2011. Erick Butler. Yu-Li Ruth. Mohammed Al Ahmad. Yung-tse Hung. Ruth Yeh. Erick Butler. Yu-Li Ruth. Mohammed Al Ahmad. Yung-tse Hung. Ruth Yeh. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper.

15 types of industrial wastewater treatment processes ...
15 types of industrial wastewater treatment processes ...

8.Cyanide-,containing wastewater,. The cyanide-,containing wastewater, mainly comes from electroplating, coal gas, coking, metallurgy, metal processing, chemical fiber, plastic, pesticide, chemical and other departments. Cyanide-,containing wastewater, is a relatively toxic industrial ,wastewater,. It is unstable in water and easily decomposes.

ELECTROCHEMICAL TREATMENT OF SOLUTIONS CONTAINING ...
ELECTROCHEMICAL TREATMENT OF SOLUTIONS CONTAINING ...

Process of abatement of the hexavalent chromium content of a raw solution with production of a reduced solution comprising an electrolytic reduction carried out in an electrolysis cell free of a separator provided with inlet and outlet of the raw solution, capable of maintaining a high mass transport through the whole bulk of the cell, and equipped with a stainless steel cathode and an anode suitable for oxygen …

Applications of Combined Electrocoagulation and ...
Applications of Combined Electrocoagulation and ...

2/10/2017, · In recent years, it is aimed to reuse ,wastewater, to form an economical input and to manage it sustainably without threatening human life and ecosystem. High pollutant removal yield from wastewaters was achieved using electrocoagulation method without adding any chemical coagulant or flocculants, thus reducing the amount of sludge. However, electrocoagulation (EC) is an inefficient method for ...

An Overview on Research Trends in Remediation of Chromium
An Overview on Research Trends in Remediation of Chromium

Kato I. and Nagai S., ,Treatment, of ,chromium containing wastewater,, Japan Kokai Tokkyo Koho, JP03, 224–691 (1991) Mirbagherp S.A. and Hosseini S.N., Pilot plant investigation on petrochemical ,wastewater treatment, for the removal of copper and ,chromium, with the objective of reuse, Desalination, 171, 85–93 (2004)

Electrochemical technologies for wastewater treatment and ...
Electrochemical technologies for wastewater treatment and ...

EC or ECF processes are now used widely in the ,treatment, of many types of wastewaters including dye and textile ,wastewater,, 373–377 refractory oily ,wastewater,, 378–380 municipal ,wastewater,, 381–385 manufacturing ,wastewater,, 386–388 and wastewaters with phenol, 389 toxic metals 390–393 and inorganic metals. 394–398 Bench and pilot-scale research studies on using EC and ECF ...

9 Kinds Of Effective Methods For Electroplating Wastewater ...
9 Kinds Of Effective Methods For Electroplating Wastewater ...

29/4/2018, · The use of reducing agents such as FeSO4, NaHSO3, Na2SO3, SO2, or iron powders, which mainly contain hexavalent ,chromium, ions, reduces the hexavalent ,chromium, ions in ,wastewater, into trivalent ,chromium, ions. Then add NaOH or milk of lime to adjust the pH, so that trivalent ,chromium, ions form ,chromium, hydroxide precipitated and removed. 7.

Purification And Treatment Of Electroplating Baths And ...
Purification And Treatment Of Electroplating Baths And ...

Electrolytic, regeneration ,of acid, cupric ... for substantially complete reduction of hexavalent ,chromium, to trivalent ,chromium, and the formation of an insoluble ,chromium,-,containing, material without leaving unwanted ions in the ... There is disclosed a system for ,treatment, of ,wastewater, effluent from a photographic process which ...

Flotation in Water and Wastewater Treatment
Flotation in Water and Wastewater Treatment

Flotation constitutes a separation process that originated from mineral processing. Nowadays, wider applications have been found and compared to flotation for ,water and wastewater treatment,. Stress in the present review paper was mainly applied to heavy metal ions recovery by flotation and the respective mechanism followed, being either ion, precipitate, or sorptive flotation.

Electrochemical Reactors for Wastewater Treatment ...
Electrochemical Reactors for Wastewater Treatment ...

The main field of application in ,wastewater, is the ,treatment, of highly concentrated ,wastewater,. Low concentrated ,wastewater, may firstly be concentrated, because the energy demand of the ,electrolytic, metal separation increases strongly with low conductivity of the treated water, due to the reduced current yield associated with a falling metal ion concentration of the water.

Seven Basic Principles Of Industrial Wastewater Treatment ...
Seven Basic Principles Of Industrial Wastewater Treatment ...

As industrial ,wastewater, has great impact on the environment and is difficult to treat, some basic principles should be followed in production and ,treatment,. These are summarized as follows: 1. The non-toxic production process should be selected as the first priority to replace or reform the backward production process, and the production of toxic and harmful ,wastewater, should be eliminated or ...

Process for treating electrolytic solution - Mitsubishi ...
Process for treating electrolytic solution - Mitsubishi ...

24/11/1981, · Process for recovery of reusable chromic ,acid, from the waste chromic ,acid, solution ,containing, impurities: 1979-03-13: Watanabe et al. 204/89: 3948738: Process for the regeneration of exhausted ,chromium,-plating solutions by two-stage diaphragm electrolysis: 1976-04-06: Fujii: 204/151: 3901774: Method of electrolyzing alkali metal halide solution ...

Hexavalent Chromium Removal by Reduction with Ferrous ...
Hexavalent Chromium Removal by Reduction with Ferrous ...

Effect of Humic ,Acid, on the Removal of ,Chromium,(VI) ... chemical oxidation and biological aerated filter processes for ,treatment, of electroplating ,wastewater,. Separation Science and Technology 2015, 146 , 150610065847009. ... Detoxification of ,chromium,-,containing, slag by Achromobacter sp. CH-1 and selective recovery of ,chromium,.

C6 Passivation of Tin Plated Steel (ETP) and Electrolytic ...
C6 Passivation of Tin Plated Steel (ETP) and Electrolytic ...

• ,Wastewater containing, hexavalent ,chromium, should not be discharged to surface or groundwater, but treated to effectively remove hexavalent ,chromium, prior to release to the environment or disposed of as a hazardous waste. • Floors, drains, equipment in process, chemicals and waste storage areas should be sealed and regularly

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