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The problem of fracturing flowback fluid reaching the standard

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 problem of fracturing flowback fluid reaching the standard
Treatment of acidic wastewater via fluoride ions removal ...
Treatment of acidic wastewater via fluoride ions removal ...

15/11/2020, · The resulting wastewater is typically an, acidic, (pH 1.5–2) solution composed of mainly phosphate, sulfate, fluoride, sodium, calcium and magnesium ions. The wastewater is commonly stored on top of phosphogypsum piles which is a solid byproduct of, phosphoric acid, production process.

A novel precipitant for the selective removal of fluoride ...
A novel precipitant for the selective removal of fluoride ...

5/2/2021, · The strongly, acidic wastewater containing fluoride [F(-,I,)] is generally neutralized using lime,, producing massive hazardous solid, waste,, which may present serious environmental risks. In this study, a novel precipitant, N,N′-Bis(3-(triethoxysilyl)propyl)thiourea, was developed for the selective removal of F(-I) from strongly acidic wastewater.

A novel precipitant for the selective removal of fluoride ...
A novel precipitant for the selective removal of fluoride ...

The strongly, acidic wastewater containing fluoride [F(-I)] is generally neutralized using lime,, producing massive hazardous solid, waste,, which may present serious environmental risks. In this study, a novel precipitant, N,N'-Bis(3-(triethoxysilyl)propyl)thiourea, was developed for the selective removal of F(-I) from strongly acidic wastewater.

Researches on the treatment of acidic fluoride-containing ...
Researches on the treatment of acidic fluoride-containing ...

A method of treating the ,acidic fluoridecontaining wastewater, with modified and polymerized ferric sulfate, polyacrylamide (PAM)combining with calcium ,fluoride, precipitation is introduced. The quantity of modified and polymerized ferric sulfate , the pH value, the quantity of CaCl2, precipitation time and the quantity of PAM which effect the removal of ,fluoride, have been studied.

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