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If the industrial wastewater contains acid substances

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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If the industrial wastewater contains acid substances
US6709592B2 - Removal of sulfur compounds from wastewater ...
US6709592B2 - Removal of sulfur compounds from wastewater ...

During this absorption process sulfide is, converted, to elemental sulfur, while Fe(III), is reduced to, Fe(II)., Fe(II,) is reoxidized, to Fe(III,) by air in a separate aerator. This known process is...

Pollution – Just Facts
Pollution – Just Facts

formic ,acid, accounts for 30–50% of the summertime rainwater acidity “over much of the U.S.” formic ,acid, accounts for 60–80% of rainwater acidity over the Amazon. 90% of atmospheric formic ,acid, is emitted by natural sources (primarily forests).

Sulfite Pulping - an overview | ScienceDirect Topics
Sulfite Pulping - an overview | ScienceDirect Topics

Sulfite Pulping. The sulfite pulping liquid is prepared by absorbing sulfur dioxide (prepared by burning sulfur with a controlled excess of oxygen and quickly cooling the product gas to around 200°C to prevent further oxidation to sulfur trioxide) into different bases. The reactions are: (1) SO 2 + H 2 O → H 2 SO 3.

(PDF) Treatment of Sulfide Alkali Waste Waters from ...
(PDF) Treatment of Sulfide Alkali Waste Waters from ...

Treatment of ,Sulfide Alkali, Waste Waters from Mercaptans Using Distillation. July 2018; Theoretical Foundations of Chemical Engineering 52(4):673-676

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