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shale gas fracturing flow-back fluids separation definition chemistry

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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shale gas fracturing flow-back fluids separation definition chemistry
CN104891632B - Treatment method of chemical nickel-plating ...
CN104891632B - Treatment method of chemical nickel-plating ...

Therefore, after adjusting to alkalinity, the ,nickel, in the ,wastewater, can be directly removed by precipitating, and high-cost chemicals such as chelate resin and recapture agent are needed. The treatment method has no special requirements on equipment, thus investment cost is low, the cost of the chemicals used is low, and running cost is greatly lowered.

Pretreatment Characteristics of Nickel-Containing Sludge ...
Pretreatment Characteristics of Nickel-Containing Sludge ...

Keywords: nickel-containing sludge; microwave; dielectric properties 1. Introduction Nickel-containing sludge (NCS) is a type of nocuous solid waste including Ni, Cd, Fe, Cu, Ca, and other main components that formed by chemical precipitation of nickel-containing wastewater produced during …

Treatment of Wastewater Containing a Mixture of Heavy ...
Treatment of Wastewater Containing a Mixture of Heavy ...

wastewaters ,containing, a high concentration of heavy metal ions (Cu2+, Zn2 +, Ni2+). The sorption results of heavy metal mixtures (Cu-Zn, Cu-Ni) from model solutions of sulfate salts on a strong-,acid, KU-2–8 cation exchanger in the H+-form were presented. The metals concentration was 10–50 meq/dm3. The efficiency conditions of cation

Cobalt and Nickel wastewater: How much money are you ...
Cobalt and Nickel wastewater: How much money are you ...

For example, battery manufacturing produces wastewaters that are high in chromium, cobalt, copper, iron, lead, manganese, mercury, ,nickel,, silver, and zinc; organic chemicals manufacturing produces ,wastewater, that contains chromium, copper, lead, ,nickel,, and zinc; electrical power plants produce ,wastewater, that contains cadmium, chromium, lead, and mercury; mines and quarries produce ,acid, …

Membrane-free electrodeionization using phosphonic acid ...
Membrane-free electrodeionization using phosphonic acid ...

15/9/2019, · Actually, the nickel containing wastewater usually contains, 2–5 mg/L nickel, ions, after pretreatment of pH adjustment, coagulation sedimentation, adsorption or electrochemical separation . Reverse osmosis [18] , [19] , nanofiltration [20] , [21] or electrodeionization [22] , [23] can remove almost all the ions, by a single process or an integrated one, and the treated water can meet the standards of …

[PDF] TREATMENT OF NICKEL-CONTAINING WASTEWATER …
[PDF] TREATMENT OF NICKEL-CONTAINING WASTEWATER …

Abstract—Electro-Fenton (EF) and Convention Fenton (CF) processes were used to treat the ,wastewater containing nickel, and citric ,acid, as its chelating agent. A stainless steel reactor was used for all the experiments. For the EF experiments, the reactor also served as the cathode while the anode is rod-type titanium metal coated with IrO2/RuO2. The ,nickel, and COD removal were studied. Mere ...

Removing Heavy Metals from Wastewater | Products Finishing
Removing Heavy Metals from Wastewater | Products Finishing

14/8/2018, · ,Nickel, is a hazardous constituent and is not exempted. The addition of, wastewaters, from the zinc/nickel process will cause your filter press cake to become a “listed” RCRA, hazardous waste, with the F006 designation, resulting in significant increases to your …

Pretreatment Characteristics of Nickel-Containing Sludge ...
Pretreatment Characteristics of Nickel-Containing Sludge ...

Keywords: ,nickel,-,containing, sludge; microwave; dielectric properties 1. Introduction ,Nickel,-,containing, sludge (NCS) is a type of nocuous solid waste including Ni, Cd, Fe, Cu, Ca, and other main components that formed by chemical precipitation of ,nickel,-,containing wastewater, produced during ,nickel, plating [1,2].

Heavy Metal Complexes Wastewater Treatment with Chelation ...
Heavy Metal Complexes Wastewater Treatment with Chelation ...

Using electroplating, wastewater containing, copper,, nickel, and chromium complexes with EDTA, ammonia and, citric acid, as an example, this study investigated the reaction mechanism and influencing factors of heavy metal removal efficiency from metal complexes using dithiocarbamates. The stability of chelating complexes was evaluated.

Removing Heavy Metals From Wastewater
Removing Heavy Metals From Wastewater

pH - A term used to describe the ,acid,-base characteristics of water, typically measured by a pH meter. Specifically, the concentration of H+ ions in water. Formally, pH is the negative logarithm of the H + concentration, i.e., pH = -log [H+]. The following values indicate the classification of a water: pH < 7 refers to ,acid, …

Chapter 3 Removing Nickel from Wastewater
Chapter 3 Removing Nickel from Wastewater

In this application, a user is discharging a wastewater that contains nickel ion, at a concentration of 0.002 moles/Kg H2O., The existing treatment strategy is to precipitate the nickel ion as Nickel Hydroxide (Ni(OH)2). The soluble nickel remaining after precipitation is less than 1 …

Treatment of Wastewater Containing a Mixture of Heavy ...
Treatment of Wastewater Containing a Mixture of Heavy ...

wastewaters ,containing, a high concentration of heavy metal ions (Cu2+, Zn2 +, Ni2+). The sorption results of heavy metal mixtures (Cu-Zn, Cu-Ni) from model solutions of sulfate salts on a strong-acid KU-2–8 cation exchanger in the H+-form were presented. The metals concentration was 10–50 meq/dm3. The efficiency conditions of cation

Influence of Some Parameters on Membrane-Free ...
Influence of Some Parameters on Membrane-Free ...

exchanger, with no electricity. The nickel containing wastewater was continuously treated at an upward flow rate of 7.1 L/h and the dilute stream was obtained at the upper outlet. Salt ions in solution were exchanged with hydrogen or hydroxide ions in the resins, allowing purification of wastewater and production of high purity water (dilute stream).

Recovery of metallic nickel from waste sludge produced by ...
Recovery of metallic nickel from waste sludge produced by ...

reusing of the, nickel containing wastewater, is strongly expected. Closed-recycle system or so-called effluent-free technology should be developed. Electrocoagulation uses no chemicals as coagulating agents. These are generated during the electrolysis process by electrodissolution, of, a sacrificial anode made, of, aluminium or iron.

Cobalt and Nickel wastewater: How much money are you ...
Cobalt and Nickel wastewater: How much money are you ...

In their process approximately 3,785,400 L of hazardous ,wastewater, is generated, ,containing, significant a concentration of copper as copper sulfate, hydrogen peroxide, and sulfuric acid, Table 4. Table 4. Concentrations of Impurities in Semiconductor Manufacturing ,Wastewater, and Allowable Limits

Treatment of wastewater containing nickel by complexation ...
Treatment of wastewater containing nickel by complexation ...

Abstract Efficient and green process for industrial treatment of heavy metal ,wastewater, is much needed. Herein, complexation-ultrafiltration using sodium polyacrylate (PAAS) as complexation agent was used to recover ,nickel, from ,wastewater containing nickel, by a rotating disk membrane module. The Ni2+ rejection could reach 98.26% at n 848 rpm, the high shear rate produced by the rotating disk ...

Treatment of wastewater containing nickel by complexation ...
Treatment of wastewater containing nickel by complexation ...

Abstract Efficient and green process for industrial treatment of heavy metal ,wastewater, is much needed. Herein, complexation-ultrafiltration using sodium polyacrylate (PAAS) as complexation agent was used to recover ,nickel, from ,wastewater containing nickel, by a rotating disk membrane module. The Ni2+ rejection could reach 98.26% at n 848 rpm, the high shear rate produced by the rotating disk ...

[PDF] TREATMENT OF NICKEL-CONTAINING WASTEWATER …
[PDF] TREATMENT OF NICKEL-CONTAINING WASTEWATER …

Abstract—Electro-Fenton (EF) and Convention Fenton (CF) processes were used to treat the ,wastewater containing nickel, and citric ,acid, as its chelating agent. A stainless steel reactor was used for all the experiments. For the EF experiments, the reactor also served as the cathode while the anode is rod-type titanium metal coated with IrO2/RuO2. The ,nickel, and COD removal were studied. Mere ...

Wastewater Treatment during PCB Fabrication Process | PSPCB
Wastewater Treatment during PCB Fabrication Process | PSPCB

This process produces copper-,containing wastewater,, sulfuric ,acid, mist. (10) Soldermask (Green): Its function is to prevent bridging during wave soldering, improve soldering quality and save solder. It is also a permanent protective layer for printed boards that protects against moisture, corrosion, mildew and mechanical abrasion.

Heavy Metal Complexes Wastewater Treatment with Chelation ...
Heavy Metal Complexes Wastewater Treatment with Chelation ...

Using electroplating wastewater containing copper, nickel and chromium complexes with EDTA, ammonia and citric acid as an example, this study investigated the reaction mechanism and influencing factors of heavy metal removal efficiency from metal complexes using dithiocarbamates. The stability of chelating complexes was evaluated.

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