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Treatment of acid wastewater with sodium sulfate

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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Treatment of acid wastewater with sodium sulfate
Can Microbially Induced Calcite Precipitation (MICP ...
Can Microbially Induced Calcite Precipitation (MICP ...

They observed that the removal of ,calcium, with chemical precipitation (,adding carbonate,) was a 34–54%, but this value was increased to 98% when MICP bacteria were used. Another factor is the pH, which determines the ,acid,-based chemical equilibria, and thus defines the presence of ,carbonate, and the precipitation processes.

Red gypsum utilization and acidic wastewater treatment ...
Red gypsum utilization and acidic wastewater treatment ...

15/11/2019, · In the ,metal self-enrichment process,, ammonium sulfate can be obtained from red gypsum conversion for commercial purpose, while the acidic ,wastewater, could be treated by neutralization. Solid phase product with one circulation (containing 39.45% Fe and 7.37% Ca) and two circulation (containing 45.79% Fe, 4.75% Ca) can be used as the proportioning of metallurgical sinter …

Amino Trimethylene Phosphonic Acid Uses in Water Treatment ...
Amino Trimethylene Phosphonic Acid Uses in Water Treatment ...

The purpose of ,adding acid, is to adjust the equilibrium concentration of ,carbonate, compounds by adjusting the pH value of water. And then adjust the equilibrium concentration of ,calcium carbonate, to prevent the formation of ,calcium carbonate,.

Biotechnological Tools for Remediation of Acid Mine ...
Biotechnological Tools for Remediation of Acid Mine ...

1/1/2018, · This method involves addition of neutralizing chemicals such lime (,calcium, oxide), ,calcium carbonate,, sodium ,carbonate,, sodium hydroxide, and magnesium oxide (Coulton et al., 2003). Addition of alkaline material raises pH of AMD, accelerates chemical oxidation of ferrous iron, and facilitates precipitation of metals as hydroxides and carbonates ( Prasad et al., 1999 , Sánchez-Andrea et al., …

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