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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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Removal of chromium in electroplating wastewater by ...
Removal of chromium in electroplating wastewater by ...

Abstract Reductive immobilization of chromium in ,wastewater, by nanoscale zero-valent metal (nZVM) prepared from steel pickling waste liquor was investigated. A series of characterization techniques were conducted to characterize the properties of the synthesized nanoparticles. Effects of pH, buffer substances, natural organic matter (NOM) and hardness were evaluated to probe …

Waste Minimization in Electroplating Industries: A Review
Waste Minimization in Electroplating Industries: A Review

Waste Minimization in ,Electroplating, Industries 159 Figure 2: (a) SEM pictures of the carbon unused felt. (b) SEM pictures of the ,copper, deposited on the carbon fibers. reduction ,of chromate, on carbon felt is an alternative method to the chemical ,chromate, reduction and could help to reduce the amount of treatment chem-icals used and the sludge ...

Removal of chromium in electroplating wastewater by ...
Removal of chromium in electroplating wastewater by ...

Abstract Reductive immobilization of chromium in ,wastewater, by nanoscale zero-valent metal (nZVM) prepared from steel pickling waste liquor was investigated. A series of characterization techniques were conducted to characterize the properties of the synthesized nanoparticles. Effects of pH, buffer substances, natural organic matter (NOM) and hardness were evaluated to probe the impact of ...

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

Abstract: A process for regenerating electroless plating bath comprising the steps of:(i) continuously or intermittently taking out a part or the whole of chelating agent-containing copper electroless plating bath from an electroless plating tank, followed by removing off the copper ion content from said bath;(ii) acidifying the thus obtained solution for precipitating the chelating …

Moly Removal From Wastewater | Products Finishing
Moly Removal From Wastewater | Products Finishing

Unfortunately, as you discovered, there is very little information out in the public domain regarding molybdenum (aka ,moly) removal from wastewater,, particularly metal finishing ,wastewater,. The reasons are two fold. First, molybdenum is regulated mainly through local limits and very few cities or sewer districts regulate molybdenum.

Removal and Recovery of Fluoborates and Metal Ions from ...
Removal and Recovery of Fluoborates and Metal Ions from ...

----- EB85-20Q038 EPA/600/2-85/054 Hay 1985 ,REMOVAL AND RECOVERY OF FLUOBORATES, AND METAL ,IONS FROM ELECTROPLATING, HASTEWATER by John W. Liskowltz, Vincent N. Cagnatl, Terrance Hunter and Ray Haralson New Jersey Institute of Technology Newark, NJ 07102 Grant No. R 804710 Projec* Officer Mary K. Stinson Organic and Inorganic Chemicals and Products Branch …

Use of a NASA-Developed Ion Exchange Material for Removal ...
Use of a NASA-Developed Ion Exchange Material for Removal ...

effluent from rinse baths of ,electroplating, facilities. The ion exchange material, originally developed as a battery separator for space applications, is a polymer made from polyacrylic acid and polyvinyl alcohol and converted to a calcium or sodium form. It exhibits a very high intake of metal ,ions, such as zinc, cadmium, ,and copper,, even in

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

The wastewater is treated with barium chloride and sodium carbonate is added to raise the pH (alkaline) and then excess barium carbonates added to precipitate excess barium. This method of treatment is capable of removing chromate efficiently and of precipitating metals of which carbonates are insoluble.

Highly efficient removal of hexavalent chromium in aqueous ...
Highly efficient removal of hexavalent chromium in aqueous ...

Fang et al. 27 found that nanoscaled ZVI removes Cr(VI) via reduction immobilization of chromium and has a Cr(VI) removal capacity of about 182 mg g −1 in electroplating wastewater with pH = 4.82. However, the ZVI nanoparticles easily aggregate; this leads to loss of their ability to degrade pollutants.

Use of a NASA-Developed Ion Exchange Material for Removal ...
Use of a NASA-Developed Ion Exchange Material for Removal ...

effluent from rinse baths of ,electroplating, facilities. The ion exchange material, originally developed as a battery separator for space applications, is a polymer made from polyacrylic acid and polyvinyl alcohol and converted to a calcium or sodium form. It exhibits a very high intake of metal ,ions, such as zinc, cadmium, ,and copper,, even in

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

The wastewater is treated with barium chloride and sodium carbonate is added to raise the pH (alkaline) and then excess barium carbonates added to precipitate excess barium. This method of treatment is capable of removing chromate efficiently and of precipitating metals of which carbonates are insoluble.

Removal of Cr(VI) from simulated electroplating wastewater ...
Removal of Cr(VI) from simulated electroplating wastewater ...

retention time, 82% of Cr(VI) was removed. Competition from common coexisting ,ions, such as Na+, Ni2+, Cu2+, NO}-' S042-, and ct was negligible. The adsorption data was well fitted by the Freundlich isotherm. We conclude that magnetite nanoparticles have considerable potential for ,removal, of Cr(VI) ,from electroplating, wastewaters.

Moly Removal From Wastewater | Products Finishing
Moly Removal From Wastewater | Products Finishing

Unfortunately, as you discovered, there is very little information out in the public domain regarding molybdenum (aka ,moly) removal from wastewater,, particularly metal finishing ,wastewater,. The reasons are two fold. First, molybdenum is regulated mainly through local limits and very few cities or sewer districts regulate molybdenum.

Highly efficient removal of hexavalent chromium in aqueous ...
Highly efficient removal of hexavalent chromium in aqueous ...

Fang et al. 27 found that nanoscaled ZVI removes Cr(VI) via reduction immobilization of chromium and has a Cr(VI) removal capacity of about 182 mg g −1 in electroplating wastewater with pH = 4.82. However, the ZVI nanoparticles easily aggregate; this leads to loss of …

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

Abstract: A process for regenerating electroless plating bath comprising the steps of:(i) continuously or intermittently taking out a part or the whole of chelating agent-containing copper electroless plating bath from an electroless plating tank, followed by removing off the copper ion content from said bath;(ii) acidifying the thus obtained solution for precipitating the chelating agent therefrom and recovering the …

Methods of Removing Heavy Metals from Industrial Wastewater
Methods of Removing Heavy Metals from Industrial Wastewater

wastewater, streams containing heavy metals are produced from different industries. Heavy metals such as cadmium, zinc, lead, chromium, nickel, ,copper,, vanadium, platinum, silver, and titanium are generated in ,electroplating,, electrolysis depositions, conversion-coating, and anodizing-cleaning, milling, and etching industries.

Methods of Removing Heavy Metals from Industrial Wastewater
Methods of Removing Heavy Metals from Industrial Wastewater

wastewater, streams containing heavy metals are produced from different industries. Heavy metals such as cadmium, zinc, lead, chromium, nickel, ,copper,, vanadium, platinum, silver, and titanium are generated in ,electroplating,, electrolysis depositions, conversion-coating, and anodizing-cleaning, milling, and etching industries.

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