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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 Hexavalent Chromium-Contaminated Water and ...
Removal of Hexavalent Chromium-Contaminated Water and ...

20/11/2008, · Xu, Y., Xiao, H., & Sun, S. (2005). Study on anaerobic ,treatment, of ,wastewater, containing ,hexavalent chromium,. Journal of Zhejiang University Science, 6(6), 574–579. Article CAS Google Scholar Yang, T. C., & Zall, R. R. (1984). Absorption of metals by natural polymers generated from seafood processing wastes.

Effect of Hexavalent Chromium on Performance of Membrane ...
Effect of Hexavalent Chromium on Performance of Membrane ...

The presence of toxic hexavalent chromium poses a great challenge in biological wastewater treatment. In this study, the performance of a membrane bioreactor (MBR) for the treatment of synthetic domestic wastewater in the presence of chromium was investigated.

Removal of hexavalent chromium from wastewater by acid ...
Removal of hexavalent chromium from wastewater by acid ...

This paper deals with the ,treatment of hexavalent chromium, (Cr(VI)) and its removal mechanism using ,acid,-washed zero-valent aluminum (ZVAl). The ,acid,-washed ZVAl before and after reaction was characterized by scanning electron microscope, X-ray diffraction, and X-ray photoelectron spectroscopy. The influence factors such as ZVAl loading, ,acid, washing time, and pH values on Cr(VI) removal were...

Hexavalent Chromium Removal by Reduction with Ferrous ...
Hexavalent Chromium Removal by Reduction with Ferrous ...

Reaction mechanism and kinetics for the ,treatment of hexavalent chromium, laden mines ,wastewater, by LD slag and simultaneous volume stabilization of LD Slag. Journal of Environmental Chemical Engineering 2017, 5 (5) , 4388-4396.

Chromium (Cr) and water - Water Treatment and Purification
Chromium (Cr) and water - Water Treatment and Purification

The metal industry mainly discharged trivalent ,chromium,. ,Hexavalent chromium, in industrial wastewaters mainly originates from tanning and painting. ,Chromium, compounds are applied as pigments, and 90% of the leather is tanned by means of ,chromium, compounds. ,Wastewater, usually contains about 5 ppm of ,chromium,.

Hexavalent Chromium Ban of 2017 in Aluminium Surface Treatment
Hexavalent Chromium Ban of 2017 in Aluminium Surface Treatment

15/12/2016, · “Replacing chromic acid anodizing with the TSA process can cut both power consumption and anodising time by half. The TSA process also requires less exhaust air, which creates significant savings in energy consumption,” says Jämsén. Savings can also be generated by having to process lighter wastewater.

Effect of Hexavalent Chromium on Performance of Membrane ...
Effect of Hexavalent Chromium on Performance of Membrane ...

The presence of toxic hexavalent chromium poses a great challenge in biological wastewater treatment. In this study, the performance of a membrane bioreactor (MBR) for the treatment of synthetic domestic wastewater in the presence of chromium was investigated.

Removal of Hexavalent Chromium-Contaminated Water and ...
Removal of Hexavalent Chromium-Contaminated Water and ...

20/11/2008, · Xu, Y., Xiao, H., & Sun, S. (2005). Study on anaerobic ,treatment, of ,wastewater, containing ,hexavalent chromium,. Journal of Zhejiang University Science, 6(6), 574–579. Article CAS Google Scholar Yang, T. C., & Zall, R. R. (1984). Absorption of metals by natural polymers generated from seafood processing wastes.

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

the ,wastewater, shows a considerable decrease in impurities. Only 1.9 parts of SO2 are required to reduce one part ,of hexavalent chromium, as contrasted with 16 parts of copper but the effluent contained sulphites and would not be suitable for discharge without further ,treatment,. ,Treatment, with sulphuric ,acid

Trevi Environmental Solutions - Chromium reduction
Trevi Environmental Solutions - Chromium reduction

Hexavalent chromium, can be found in chromate compounds (CrO 4 2-and Cr 2 O 7 2), is highly toxic and carcinogenic. ,Wastewater treatment, techniques therefore aim to reduce the ,hexavalent chromium, to trivalent ,chromium,. The latter component can be removed by conventional physicochemical ,wastewater treatment,. Principle and scheme. In ,acid, medium ...

Hexavalent Chromium Removal by Reduction with Ferrous ...
Hexavalent Chromium Removal by Reduction with Ferrous ...

Reaction mechanism and kinetics for the ,treatment of hexavalent chromium, laden mines ,wastewater, by LD slag and simultaneous volume stabilization of LD Slag. Journal of Environmental Chemical Engineering 2017, 5 (5) , 4388-4396.

Hexavalent chromium - Wikipedia
Hexavalent chromium - Wikipedia

There are mainly three types of methods to remediate hexavalent chromium in ground water and drinking water: 1) reduction of toxicity, 2) removal technologies and 3) containment technologies. Reduction of toxicity of hexavalent chromium involves methods using chemicals, microbes and plants.

Removal of Hexavalent Chromium by using Citric Acid Modified
Removal of Hexavalent Chromium by using Citric Acid Modified

for ,wastewater treatment,. Hence, recycling of this waste for ,wastewater treatment, would not only be economical but also help to solve waste disposal problems (Ahalya et al., 2008). Thus, this work uses Tamarind pod shell powder modified with citric ,acid, (CA) for Cr (VI) removal from aqueous solutions.

Removal of hexavalent chromium from wastewater by acid ...
Removal of hexavalent chromium from wastewater by acid ...

This paper deals with the ,treatment of hexavalent chromium, (Cr(VI)) and its removal mechanism using ,acid,-washed zero-valent aluminum (ZVAl). The ,acid,-washed ZVAl before and after reaction was characterized by scanning electron microscope, X-ray diffraction, and X-ray photoelectron spectroscopy. The influence factors such as ZVAl loading, ,acid, washing time, and pH values on Cr(VI) removal were...

Do You Need to Remove Chromium from Your Industrial Water ...
Do You Need to Remove Chromium from Your Industrial Water ...

Many industrial facilities discharge ,wastewater, to a centralized ,wastewater treatment, facility, such as municipal sewers or publicly-owned ,treatment, works (POTW). Often, however, POTWs are not set up to handle high concentrations of heavy metals like ,chromium,.

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