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What is the reinjection standard 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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What is the reinjection standard of fracturing flowback fluid
DYE WASTEWATER TREATMENT: REMOVAL OF REACTIVE DYES …
DYE WASTEWATER TREATMENT: REMOVAL OF REACTIVE DYES …

Coagulants poly-DADMAC, polyamine and PAC used in this study are of commercial grade. ,Ferrous sulfate,, Alum and reactive dye are of A.R. grade. The Reactive Dye used is of commercial grade. Laboratory tests were conducted on synthetic reactive dye wastes which were prepared by ,adding, 100 mg of the dyestuff in 500 ml of water.

Case study: How to purify Hexavalent Chrome Wastewater ...
Case study: How to purify Hexavalent Chrome Wastewater ...

As reducing agent can be used FeSO 4 (,ferrous sulfate,). In this case chromium restoration can be provided in each of ,acid, and base medium. The ,wastewater, with metal hydroxides (after processing in AVS unit) enters the settling tank for defecation and then – the sewerage or the water recycling (to the shopfloors for engineering purpose).

DECOMPOSITION OF POLLUTANTS IN TEXTILE WASTEWATER …
DECOMPOSITION OF POLLUTANTS IN TEXTILE WASTEWATER …

those by the classical Fenton method. The ,wastewater, was purified with ,ferrous sulfate, and ,ferrous sulfate, with the addition of iron(II, III) nanocompound. The effect of optimization of the process was examined by ,adding, various amounts of ,ferrous sulfate, and iron(II, III) nano-oxide, hydrogen peroxide and changing pH of the solution.

Ferric chloride or sulphate vs. ferrous chloride/sulphate
Ferric chloride or sulphate vs. ferrous chloride/sulphate

2/3/2009, · Whether ,ferrous, or ferric, and whether chloride or sulphate, the basic purpose of these iron chemicals in industrial ,wastewater, treatment is as a co-precipitant. In many cases iron is unregulated in the effluent and can be used to drive some copper (or other heavy metal) out …

Performance Evaluation of Tile Wastewater Treatment with ...
Performance Evaluation of Tile Wastewater Treatment with ...

sulfate, and ,ferrous,, aluminum ,sulfate, as metal salts and Poly aluminum Chloride (PAC) as hydrolyzed aluminum salt. This was compounded of Merck Germany. Hydrochloric ,acid, 1 normal and lime Ca (OH) 2 solution were used for adjusting the pH value of ,wastewater, during the treatment processes. Details coagulants used are described in

Chemicals in Water & Wastewater Treatment
Chemicals in Water & Wastewater Treatment

Chemicals in Water & Wastewater Treatment, Chemical Used for Precipitation 1. Aluminum ,sulfate, – Al 2 (SO 4) 3.18 H 2 O 2. Aluminum chloride – AlCl 3 3. Calcium hydroxide – Ca (OH) 2 4. Lime 5. Ferric chloride – FeCl 3 6. Ferric ,sulfate, – Fe 2 (SO 4) 3 7. Copperas – FeSO 4.7H 2 O Chemical Used for Neutralization 1. Calcium carbonate ...

The removal of color and COD from wastewater containing ...
The removal of color and COD from wastewater containing ...

of ,wastewater,. A ,ferrous sulfate, concentration of 200 mg/L and 100 mg/L was necessary for an efficient COD WBA Color (mg/L) 100 400 Alum 69 70 COD removal (%) ,Ferrous sulfate, 67 69 Alum 99.8 99.99 COLOR removal (%) ,Ferrous sulfate, 98.7 99.6 Alum 10 10 pH ,Ferrous sulfate, 9 9 Alum 40 40 T (°C)

Industrial wastewater treatment - Wikipedia
Industrial wastewater treatment - Wikipedia

Industrial wastewater treatment, describes the processes used for treating ,wastewater, that is produced by industries as an undesirable by-product. After treatment, the treated industrial ,wastewater, (or effluent) may be reused or released to a sanitary sewer or to a surface water in the environment.. Most industries produce some ,wastewater,.Recent trends have been to minimize such production or ...

Performance Evaluation of Tile Wastewater Treatment with ...
Performance Evaluation of Tile Wastewater Treatment with ...

sulfate, and ,ferrous,, aluminum ,sulfate, as metal salts and Poly aluminum Chloride (PAC) as hydrolyzed aluminum salt. This was compounded of Merck Germany. Hydrochloric ,acid, 1 normal and lime Ca (OH) 2 solution were used for adjusting the pH value of ,wastewater, during the treatment processes. Details coagulants used are described in

Municipal Wastewater Treatment Chemicals Supplier ...
Municipal Wastewater Treatment Chemicals Supplier ...

Hydrogen Peroxide for Municipal ,Wastewater, Treatment. With environmental policies becoming more stringent with the discharge of ,wastewater, municipalities have to find new ways to treat and reuse ,wastewater,. Also, many municipalities face high odor complaints from the public due to ,wastewater, treatment plants.

Combined Iron Reduction and Solidification/Stabilization ...
Combined Iron Reduction and Solidification/Stabilization ...

FGD ,wastewater,. The volume of the final brine was about 10% of the original ,w astewater,. During the process of concentrating the FGD ,wastewater, into its brine through heating, the colorless FGD ,wastewater, became yellow to brownish, with the formation of precipitates and crystal solids at the bottom. The TDS, nitrate, ,sulfate,,

5530 PHENOLS - Standard Methods For the Examination of ...
5530 PHENOLS - Standard Methods For the Examination of ...

Oxidizing agents, such as chlorine and those detected by the liberation of iodine on acidification in the presence of potassium iodide (KI)—Remove immediately after sampling by ,adding, excess ,ferrous sulfate, (FeSO 4). If oxidizing agents are not removed, the phenolic compounds will be oxidized partially.

Combined Iron Reduction and Solidification/Stabilization ...
Combined Iron Reduction and Solidification/Stabilization ...

FGD ,wastewater,. The volume of the final brine was about 10% of the original ,w astewater,. During the process of concentrating the FGD ,wastewater, into its brine through heating, the colorless FGD ,wastewater, became yellow to brownish, with the formation of precipitates and crystal solids at the bottom. The TDS, nitrate, ,sulfate,,

Application of Organic Coagulants in Water and Wastewater ...
Application of Organic Coagulants in Water and Wastewater ...

13/6/2018, · These include based aluminum metals (aluminum chloride, aluminum ,sulfate,, sodium aluminate) and iron based metals (,ferrous sulfate,, ferric ,sulfate,, ferric chloride) [13, 17, 18]. The addition of these coagulants to ,wastewater, undergo a series of reactions with the hydroxyl ions (OH − ) producing monomeric and polynuclear species.

DYE WASTEWATER TREATMENT: REMOVAL OF REACTIVE DYES …
DYE WASTEWATER TREATMENT: REMOVAL OF REACTIVE DYES …

Coagulants poly-DADMAC, polyamine and PAC used in this study are of commercial grade. ,Ferrous sulfate,, Alum and reactive dye are of A.R. grade. The Reactive Dye used is of commercial grade. Laboratory tests were conducted on synthetic reactive dye wastes which were prepared by ,adding, 100 mg of the dyestuff in 500 ml of water.

Industrial wastewater treatment - Wikipedia
Industrial wastewater treatment - Wikipedia

Industrial wastewater treatment, describes the processes used for treating ,wastewater, that is produced by industries as an undesirable by-product. After treatment, the treated industrial ,wastewater, (or effluent) may be reused or released to a sanitary sewer or to a surface water in the environment.. Most industries produce some ,wastewater,.Recent trends have been to minimize such production or ...

Adding Anodizing | Products Finishing
Adding Anodizing | Products Finishing

To gage the appropriateness of ,adding anodizing,, ... (for Type I anodizing), sulfuric ,acid, (for Type II and III anodizing), nitric ,acid,, ,ferrous sulfate,, nickel acetate and organic dyestuffs. Obviously, ... The areas of concern are ,wastewater, discharge and air-pollution control.

Coagulation water treatment process | Hard and Soft Water
Coagulation water treatment process | Hard and Soft Water

The iron base coagulants include ,ferrous sulfate, (FeSO 4.7H 2 O), ferric ,sulfate,, and ferric chloride. On the other hand aluminium base coagulants include aluminium ,sulfate, (Al 2 (SO 4) 3.18H 2 O), aluminum chloride, sodium aluminate and polyaluminum chloride (PACl).

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