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Chongqing fracturing and production test 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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Chongqing fracturing and production test flowback fluid
Removal of hexavalent chromium from wastewater by acid ...
Removal of hexavalent chromium from wastewater by acid ...

(2016). Removal ,of hexavalent chromium, from ,wastewater, by ,acid,-washed zero-valent aluminum. Desalination and Water ,Treatment,: Vol. 57, No. 12, pp. 5592-5600.

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...

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.

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 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.

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,.

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

Removal of hexavalent chromium from wastewater by acid-washed zero-valent aluminum

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 ...

Reduction Monitoring in the Chromium Wastewater Treatment ...
Reduction Monitoring in the Chromium Wastewater Treatment ...

hexavalent chromium, such as chromate and dichromate. The, hexavalent chromium, in this, wastewater, must be reduced before the water can be discharged. This requires a two-step process:, hexavalent chromium, (CR6) is reduced to trivalent chromium (CR 3); and CR is precipitated as chromium hydroxide. As the oxidation-reduction potential (ORP)

Treatment of Hexavalent Chromium Contaminated Wastewater ...
Treatment of Hexavalent Chromium Contaminated Wastewater ...

Nguyen, L.H., Nguyen, T.M.P., Van, H.T. et al. ,Treatment of Hexavalent Chromium Contaminated Wastewater Using Activated Carbon, Derived from Coconut Shell Loaded by Silver Nanoparticles: Batch Experiment. Water Air Soil Pollut 230, 68 (2019). https://doi.org/10.1007/s11270-019-4119-8. Download citation. Received: 21 November 2018. Accepted: 11 February 2019

Efficient Removal of Hexavalent Chromium from Wastewater ...
Efficient Removal of Hexavalent Chromium from Wastewater ...

Removal of hexavalent chromium had attracted much attention as it is a hazardous contaminant. An electrocoagulation-like technology electro-reduction was applied. The chromium (VI) in the wastewater was reduced to chromium (III) by the electron supplied by electricity power and Fe2+, formed from corrosion of steel electrodes in acidic conditions.

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-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.

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,.

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,.

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.

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...

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 ...

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