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Treatment and reuse technology of fracturing flowback fluid

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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Treatment and reuse technology of fracturing flowback fluid
Workplace Safety and Health Guidelines
Workplace Safety and Health Guidelines

Neutralisation of an ,acidic, or alkaline waste is the addition of acids or bases to the waste to alter the pH to a more neutral level – in the range of 6 to 9. ,Acidic, waste may be neutralised with slaked lime [Ca(OH) 2], caustic soda (NaOH) or soda ash (Na 2 CO 3). Alkaline waste may be neutralised with sulphuric acid (H 2 SO 4) or hydrochloric acid (HCl).

METHOD FOR INTEGRATED TREATMENT OF ELECTROPLATING …
METHOD FOR INTEGRATED TREATMENT OF ELECTROPLATING …

A method for integrated treatment ,of electroplating wastewater, includes steps of: adjusting and maintaining pH of ,wastewater, at 10.5-12; oxidizing pollutants such as sodium cyanide and hydroxyl-containing organic amine complexants with sodium hypochlorite; precipitating carboxyl-containing organic acid complexants with synergistic effect of ferrous and calcium ions; reducing hexavalent ...

Original Research Combined Wastewater Treatment from ...
Original Research Combined Wastewater Treatment from ...

well as techniques of advanced ,oxidation, with the use of ozone, ,hydrogen peroxide,, UV radiation and Fenton’s reagents [23,24]. Beside chemical methods, we should also list physical methods in ,wastewater, treatment, such as sedimentation [25] or processes related to the equalization of ,wastewater, …

Cyanide - Wikipedia
Cyanide - Wikipedia

A ,cyanide, is a chemical compound that contains the group C≡N. This group, known as the cyano group, consists of a carbon atom triple-bonded to a nitrogen atom.. In inorganic cyanides, the ,cyanide, group is present as the anion CN −.Soluble salts such as sodium ,cyanide, and potassium ,cyanide, are highly toxic. Hydrocyanic acid, also known as ,hydrogen cyanide,, or HCN, is a highly volatile ...

Hydrogen peroxide | H2O2 - PubChem
Hydrogen peroxide | H2O2 - PubChem

Hydrogen peroxide,, stabilized appears as a crystalline solid at low temperatures. Has a slightly pungent, irritating odor. Used in the bleaching and deodorizing of textiles, wood pulp, hair, fur, etc. as a source of organic and inorganic peroxides; pulp and paper industry; plasticizers; rocket fuel; foam rubber; manufacture of glycerol; antichlor; dyeing; ,electroplating,; antiseptic; laboratory ...

Review of the Impact on Water Quality and Treatment ...
Review of the Impact on Water Quality and Treatment ...

15/3/2016, · Hydrogen peroxide oxidation. Oxidation of cyanide tailings by hydrogen peroxide is more suitable for solutions rather than slurries. The oxidation process is maintained at pH of 9–10 to avoid formation of hydrogen cyanide . The oxidation reaction is catalysed by copper (II) sulphate resulting in the production of carbonate and ammonium (Eqs.

Mechanism and Health Effects of Heavy Metal Toxicity in ...
Mechanism and Health Effects of Heavy Metal Toxicity in ...

11/9/2018, · Arsenic has also been shown to generate free radicals such as superoxide (O 2 •–), singlet oxygen (1 O 2), nitric oxide (NO •), ,hydrogen peroxide, (H 2 O 2), the peroxyl radical (ROO •) , dimethylarsinic peroxyl radicals ((CH 3) 2 AsOO •) and also the dimethylarsinic radical ((CH 3) 2 As •) in some studies though the mechanism for the generation of all these reactive species remains ...

Biodetoxification of silver–cyanide from electroplating ...
Biodetoxification of silver–cyanide from electroplating ...

Other methods for treatment such as copper‐catalysed ,hydrogen peroxide oxidation,, ozonation and electrolytic decomposition are extremely expensive. Thus, there is an urgent need for the development of an alternative treatment process capable of achieving high degradation efficiency at low costs.

Reduction of Hexavalent Chromium by H2O2 in Acidic ...
Reduction of Hexavalent Chromium by H2O2 in Acidic ...

The values of k2 (M -(n+z) min -1) are given by k2 = k/ [H +] z = k1 / [H 2 O 2] n [H +] z, where k is the overall rate constant (M -n min -1) and k1 is the pseudo-first-order rate constant (min -1 ). The values of k in the pH range 2−4 have been fitted to the equation log k = 2.14pH − 2.81 with σ = ± 0.18.

Workplace Safety and Health Guidelines
Workplace Safety and Health Guidelines

Neutralisation of an ,acidic, or alkaline waste is the addition of acids or bases to the waste to alter the pH to a more neutral level – in the range of 6 to 9. ,Acidic, waste may be neutralised with slaked lime [Ca(OH) 2], caustic soda (NaOH) or soda ash (Na 2 CO 3). Alkaline waste may be neutralised with sulphuric acid (H 2 SO 4) or hydrochloric acid (HCl).

Department of Chemical Engineering & Materials Science ...
Department of Chemical Engineering & Materials Science ...

It is identified that if biogas containing 52 mol% methane, 38 mol% carbon dioxide, and 10 mol% water (or steam) is used for ,hydrogen, production by dry reformation at a temperature of 837.5 °C and a pressure of 101.3 kPa; optimal values of 89.9% methane conversion, 99.99% carbon dioxide conversion and ,hydrogen, selectivity 1.21 can be obtained.

JoDrugs. HYDROGEN PEROXIDE
JoDrugs. HYDROGEN PEROXIDE

Contamination of ,hydrogen peroxide, from any source, including metals, may cause rapid decomposition, with generation of large quantities of oxygen gas and high pressures (Budavari, 1989). ,Hydrogen peroxide, is rapidly decomposed by alkalies and finely divided metals; the presence of mineral acid renders it more stable (Budavari, 1989).

Review of the Impact on Water Quality and Treatment ...
Review of the Impact on Water Quality and Treatment ...

15/3/2016, · ,Hydrogen peroxide oxidation,. ,Oxidation, of cyanide tailings ,by hydrogen peroxide, is more suitable for solutions rather than slurries. The ,oxidation, process is maintained at pH of 9–10 to avoid formation of ,hydrogen, cyanide . The ,oxidation, reaction is catalysed by copper (II) sulphate resulting in the production of carbonate and ammonium (Eqs.

Guidance Manual for Developing Best Management Practices …
Guidance Manual for Developing Best Management Practices …

----- list of exhibits 2-1 factors affecting specific bmp selection .. . .. 2-6 2-2 suggested elements of a baseline bmp plan . . 2-7 2-3 bmp committee activities and responsibilities . 2-8 2-4 example of committee formation to effectively manage an environmental program . 2-9 2-5 example of the use of a policy 2-12 2-6 an example of the effectiveness of using a release identification and ...

zoosnet.net
zoosnet.net

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Search Technic Chemistry Equipment & Controls
Search Technic Chemistry Equipment & Controls

Characteristics: Electrolytic sulfite gold process for semiconductor applications that produces pure, soft gold deposits. Operates at an optimum ,acidic, pH of 6.6, making it compatible with almost all photoresists. It produces a bright deposit without the use of …

Original Research Combined Wastewater Treatment from ...
Original Research Combined Wastewater Treatment from ...

well as techniques of advanced ,oxidation, with the use of ozone, ,hydrogen peroxide,, UV radiation and Fenton’s reagents [23,24]. Beside chemical methods, we should also list physical methods in ,wastewater, treatment, such as sedimentation [25] or processes related to the equalization of ,wastewater, …

Biodetoxification of silver–cyanide from electroplating ...
Biodetoxification of silver–cyanide from electroplating ...

Other methods for treatment such as copper‐catalysed ,hydrogen peroxide oxidation,, ozonation and electrolytic decomposition are extremely expensive. Thus, there is an urgent need for the development of an alternative treatment process capable of achieving high degradation efficiency at low costs.

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