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Fracturing flowback fluid in Tarim Oilfield

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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Fracturing flowback fluid in Tarim Oilfield
sodium metabisulfite uses in water treatment Factory ...
sodium metabisulfite uses in water treatment Factory ...

Sodium metabisulfite is a white or yellowish powder used in wastewater treatment. It has the effect of reducing under acidic conditions, but does not have the effect of removing heavy metals.Sodium sulfide is a red or reddish-brown flake that is also reductive and effective at removing heavy metal ions.When used under alkaline conditions, it can ...

Hydrothermal Treatment of Arsenic Sulfide Residues from ...
Hydrothermal Treatment of Arsenic Sulfide Residues from ...

However, such wastewater is usually treated with sodium sulfide, sodium hydrosulfide or hydrogen sulfide to precipitate arsenic, and the deposition of arsenic sulfide residue (ASR) is then engendered [15,16]. It is estimated that hundreds of thousands of tons of ASR are generated annually in China. As a typical arsenic-containing waste, ASR will lead to serious environmental pollution if disposed of improperly.

Chemical precipitation of heavy metals from wastewater by ...
Chemical precipitation of heavy metals from wastewater by ...

Traditionally, strong alkaline reagents, such as ammonia, lime, sodium hydroxide, sodium carbonate and sodium sulfide, are used to increase the pH of wastewater so that soluble heavy metal ions convert to their insoluble hydroxide, carbonate or sulfide forms and precipitate in an alkaline environment.

Coordination of sodium sulfide and heavy metal composite ...
Coordination of sodium sulfide and heavy metal composite ...

Coordination of ,sodium sulfide, and heavy metal composite trapping agent (DTC) on treatment of ,acidic wastewater containing, chromium May 2017 Xiandai Huagong/Modern Chemical Industry 37(5):106-110

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