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The filtration effect of fracturing flowback fluid is poor

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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The filtration effect of fracturing flowback fluid is poor
CN103693773A - Chromium-containing waste water reuse ...
CN103693773A - Chromium-containing waste water reuse ...

The invention discloses a ,chromium,-,containing waste water, reuse treatment method, which comprise the following steps: (1) filtering the ,waste water, to be treated by a filter; (,2,) treating the filtered ,waste water, by a cation bed; (3) treating the water which is treated by the cation bed by an anion bed; (4) reusing the water after treatment.

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

Chromium,-,Containing Wastewater, Reaction Tank Neutralization Tank Settling Tank Sludge Discharge Reaction Sodium metabisulfite Na. ,2,. S. ,2,. O. 5 + H. ,2,. O -> 2NaHSO. 3. 2H. ,2,. CrO. 4 + 3NaHSO. 3 + 3H. ,2,. ,SO,. 4-> Cr. ,2, (,SO,. 4) 3 + 3NaHSO. 4 + 5H. ,2,. O Na. ,2,. Cr. ,2,. O. 7 + 3NaHSO. 3 + 5H. ,2,. ,SO,. 4-> Cr. ,2, (,SO,. 4) 3 + 5NaHSO. 4 + 4H. ,2,. O Cr. ,2, (,SO,. 4) 3 + 6NaOH -> 2Cr(OH) 3 + 3Na. ,2,. ,SO,. 4: Measuring point. FLXA21 ,2, …

Chromium Removal from Wastewater by Reverse Osmosis
Chromium Removal from Wastewater by Reverse Osmosis

leather industry and textile industry. ,Wastewater, from ,chromium, tanning can contain up to 4100 mg.L-1 of Cr(III) [11]. Fig. ,2,: E-pH diagram of area of prevailing existence of Cr(III)-Cr(VI) system, c(Cr total)=0,52 mg.L-1, t=25°C. ,Chromium, occurs in waters most often in two oxidation states Cr(III) and Cr(VI). ,Chromium, …

Vol. 4 Issue 2 February 2015 Chromium Ions Removal from ...
Vol. 4 Issue 2 February 2015 Chromium Ions Removal from ...

Chromium, is a heavy metals and present in the environment in several different forms. The most common forms ,chromium, (III), and ,chromium, (VI). The sources of Cr are wastewaters of electroplating, leather tanning, cement, and paint industries [,2,-3]. ,Chromium, removal techniques such as precipitation, membrane techniques and solvent

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