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2. Neutralization method of acid wastewater

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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2. Neutralization method of acid wastewater
Waste water and waste water treatment in the Steel Plant ...
Waste water and waste water treatment in the Steel Plant ...

Biological ,treatment, is a conventional method used for the ,treatment, of the ,waste water, from the of coke oven and by product plant before its disposal. Because biological oxidation is highly sensitive to fluctuations in constituent loadings and pH, the ,waste water, is first passed through an equalization tank to level out the concentrations, the temperature, and the flow volume.

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., …

Physical-chemical Wastewater Treatment Plant Design
Physical-chemical Wastewater Treatment Plant Design

The materials that may be fed to the ,wastewater, in the rapid-mix basins include lime, a ,metal, salt (ferric chloride, alum, or, most likely, chlorinated ferrous sulfate), a coagulant aid, return sludge from the primary sedimentation basins, ,acid, (if the ,treatment, process includes depressing the pH rather than elevating it), and the spent backwash water from the activated-carbon beds.

A comparison of neutralization efficiency of chemicals ...
A comparison of neutralization efficiency of chemicals ...

22/2/2016, · In this work, use is made of a number of basic materials like calcium carbonate, calcium hydroxide, calcium oxide, sodium carbonate, sodium hydroxide, and ammonia to examine their neutralization efficiency with respect to the acidic water and it was found that quick lime or raw lime (CaO) has the highest neutralization capacity.

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