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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 for the Industrial Metal Finishing ...
Wastewater Treatment for the Industrial Metal Finishing ...

Neutralization of ,wastewater, that is highly ,acidic, (low pH) or highly basic (high pH) is required for discharge to municipal sewer systems or to rivers and streams. The most common allowable pH range for discharge is generally 6 to 9 standard units (S.U.) but can be 5.0 to …

SOLUTION FOR WASTEWATER PROBLEM RELATED TO ELECTROPLATING …
SOLUTION FOR WASTEWATER PROBLEM RELATED TO ELECTROPLATING …

Electroplating wastewater, is variable in character and alkaline in nature. It gives rise to obnoxious smell. The color imparts visible ... ,acidic, behaviour of the solution generates the dangerous hydrogen cyanide gas that creates air pollution problem. Treatment with barium chromate

Electroplating wastewater - H2O
Electroplating wastewater - H2O

Thanks to the physical evaporation process, heavy metals and complexing agents are reliably separated from the ,electroplating wastewater, without the use of expensive chemicals. Our technology safely complies with even the strictest discharge limits. You can focus on what is really important: Your surface and ,electroplating, technology.

Treatment of Electroplating Waste -- Student Project
Treatment of Electroplating Waste -- Student Project

2000. A. Anusha: Some good books available on the ,treatment of electroplating waste, include: "Operation and Maintenance of Surface ,Finishing Wastewater, Treatment Systems" [affil. link to book on Amazon] and Water and Waste Control For the Plating Shop".For a much briefer treatment of the subject, there is coverage in the Metal ,Finishing, Guidebook, the "Products ,Finishing," Directory, and the ...

Electroplating- Lenntech
Electroplating- Lenntech

Wastewater, composition: Almost all the substances and products used in ,electroplating, can be found in the ,wastewater,, for instance ,acidic, solutions, toxic metals, solvents, and cyanides. This contamination is a consequence of the different process steps such as spillage, rinsing, dumping of process baths.

REMOVAL OF HEXAVALENT CHROMIUM FROM ELECTROPLATING ...
REMOVAL OF HEXAVALENT CHROMIUM FROM ELECTROPLATING ...

REMOVAL OF HEXAVALENT CHROMIUM FROM ,ELECTROPLATING WASTEWATER, 413 Cr 2O 7 2-+ 6Fe2+ + 14H+ → 2Cr3+ + 6Fe3+ + 7H 2O (1) Cr3+ + 3OH-→ Cr(OH) 3 (2) Fe3+ + 3OH-→ Fe(OH) 3 (3) The produced sludge amount in the above process is very large, since for 1 kg of chromium

SOLUTION FOR WASTEWATER PROBLEM RELATED TO ELECTROPLATING …
SOLUTION FOR WASTEWATER PROBLEM RELATED TO ELECTROPLATING …

Electroplating wastewater, is variable in character and alkaline in nature. It gives rise to obnoxious smell. The color imparts visible ... ,acidic, behaviour of the solution generates the dangerous hydrogen cyanide gas that creates air pollution problem. Treatment with barium chromate

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

Abstract: In view of the existing technical problems about treatment of ,electroplating wastewater, , the new technology of processing ,electroplating wastewater, with organic heavy metal chelator-dithiocarbamates is developed. Using ,electroplating wastewater, containing copper, nickel and chromium complexes with EDTA, ammonia and citric acid as an example, this study investigated the …

Wastewater treatment: a case study of electronics ...
Wastewater treatment: a case study of electronics ...

20/9/2018, · However, electroplating wastewater has low organic matter, but have a high toxicity. Among the prime contaminants in electroplating wastewater, cyanide and suspended metals are of great concern. To obtain high-quality electroplated products, cyanide is extensively used (Zhang et al. 2015 ), which results in the production of toxic wastewater which contains cyanide.

Electrochemical Treatment of Electroplating Wastewater ...
Electrochemical Treatment of Electroplating Wastewater ...

Various metals processing and finishing industries as electroplating produce large volume of wastewater that contain many kinds of toxic substance such as acid cyanide, alkaline cleaning agent, degreasing solvents, oil and fat and heavy metals.

Electrochemical Treatment of Electroplating Wastewater ...
Electrochemical Treatment of Electroplating Wastewater ...

Various metals processing and finishing industries as electroplating produce large volume of wastewater that contain many kinds of toxic substance such as acid cyanide, alkaline cleaning agent, degreasing solvents, oil and fat and heavy metals.(2) Industrial effluents from electroplating industries contain hi gh amounts of heavy metal ions, such as chromium, nickel, copper, cadmium and zinc.

C i v i l entalE Journal of Civil nvironmental DOI: n f o ...
C i v i l entalE Journal of Civil nvironmental DOI: n f o ...

electroplating industry shows pH 3.8 which is also in acidic nature. The permissible limit of pH of the discharge of electroplating industrial effluent in the range of 7 to 10. High acidic condition increases the tendency to leach the heavy metal, which are toxic to living being and contaminate the groundwater and soil. The temperature of wastewater

Wastewater treatment: a case study of electronics ...
Wastewater treatment: a case study of electronics ...

20/9/2018, · However, electroplating wastewater has low organic matter, but have a high toxicity. Among the prime contaminants in electroplating wastewater, cyanide and suspended metals are of …

Nickel removal from electroplating industry wastewater: A ...
Nickel removal from electroplating industry wastewater: A ...

electroplating industry wastewater is released directly into the surface water bodies. The nickel electroplating wastewater contains high nickel pollution along with other process parameters. The low pH is used for plating on metal surface using nickel ion leads to …

Electroplating Wastewater Treatment_Method
Electroplating Wastewater Treatment_Method

Electroplating, factory ,wastewater, discharged serious confusion (The quality of employees is poor and they are arranged in a row to save time.) ,Wastewater, is not categorized into categories. The chemicals used in each sort of ,wastewater, are highly targeted in order to reduce costs.As a result, the ,wastewater, of each category is poorly treated, and the integrated water is still not up to standard.

Characteristic Study of Electroplating and Dye Industrial ...
Characteristic Study of Electroplating and Dye Industrial ...

efficiencies is to be more than 90% but it is identified as the ,electroplating, and dye industries effluent had a low treatment efficiencies of about only 80-85%. And the ,electroplating wastewater, has more heavy metal which has more carcinogenic effects which causes various health problems. And also the effluent of dyes in ,waste water, concentration

Characterization and Treatment of Real Wastewater from an ...
Characterization and Treatment of Real Wastewater from an ...

23/5/2019, · The rejection of the stage of ,electroplating, deposit contains widely metals and the following anions: BO 3−, CO 2− 3, Cr 2 O 2− 7, F −, PO 4 3−, Cl −, NO −3 and SO 4 2−. Generally, ,wastewater, contains many heavy metals. The most important of cations are Cr 6+, it is reduced to Cr 3+, while CN-is oxidized in the preliminary ...

Treatment of Electroplating Waste -- Student Project
Treatment of Electroplating Waste -- Student Project

2000. A. Anusha: Some good books available on the ,treatment of electroplating waste, include: "Operation and Maintenance of Surface ,Finishing Wastewater, Treatment Systems" [affil. link to book on Amazon] and Water and Waste Control For the Plating Shop".For a much briefer treatment of the subject, there is coverage in the Metal ,Finishing, Guidebook, the "Products ,Finishing," Directory, and the ...

Treatments of alkaline non-cyanide alkaline cyanide and ...
Treatments of alkaline non-cyanide alkaline cyanide and ...

The pH of synthetic electroplating wastewater was determined to be within the range of 5.7-6.5, which is similar to the pH of acidic Zn electroplating wastewater (Kobya et al. 2017).... Recovery of...

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