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waste water filtering

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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waste water filtering
Treatment of Cr(VI)-containing wastewaters with ...
Treatment of Cr(VI)-containing wastewaters with ...

The conventional treatment of spent plating and anodizing baths consists of four steps: (a) the reduction of Cr(VI) to Cr(III), carried out by the addition of chemical reductants (Sharma and Forster 1993), (b) the precipitation at high pH of Cr(III) in the form of Cr(OH) 3 (Sharma and Forster 1994), (c) the sedimentation of the insoluble metal hydroxide (Margarida Alves et al. 1993), and (d) the disposal of the metal …

[Treatment of wastewater containing Cr(VI) by LDH ...
[Treatment of wastewater containing Cr(VI) by LDH ...

The results indicate that factors of impacting on efficiency of removal ,Cr,(VI) include in amount of adding Mg2+ and Al3+, Mg/Al ratio, pH and concentration of ,Cr,(VI) in ,wastewater,. The maximal removal efficiency of ,Cr,(VI) can be reached when pH values are between 8.5 and 9, and Mg/Al ratios are between 1:1 and 2:1, meanwhile, Mg and Al added can be taken good use of.

Removal of Cr(VI) from Acid Wastewater by BC/ZnFe2O4 ...
Removal of Cr(VI) from Acid Wastewater by BC/ZnFe2O4 ...

Under visible light irradiation, BC/ZnFe 2 O 4 as photocatalyst can remove 80 % ,Cr,(VI), higher than that of BC (0) or ZnFe 2 O 4 (44 %). In addition, BC/ZnFe 2 O 4 composites exhibit excellent cycling stability and can be easily separated for recycling due to its stability and unique magnetic properties.

Removal of Cr( vi ) from wastewater by a two-step method ...
Removal of Cr( vi ) from wastewater by a two-step method ...

Removal of ,Cr,(VI) from ,wastewater, by a two-step method ,of oxalic acid reduction-modified fly, ash adsorptionXiaoling Jiang a, Wenqiang Fan b, Chunqing Li b, Yong Wang b, Junbin Bai a, Hongjian Yang * a and Xiaoli Liu * a a Hebei Provincial Key Laboratory of Green Chemical Technology and High Efficient Energy Saving, Tianjin Key Laboratory of Chemical Process Safety, School of Chemical ...

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