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Adding sodium pyrosulfite to 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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Adding sodium pyrosulfite to acid wastewater
Acid wastewater treatment by diffusion dialysis in ...
Acid wastewater treatment by diffusion dialysis in ...

The ,acid wastewater, generated by chemical fiber ,factory, was treated by a pilot diffusion dialysis plant.Sulfuric ,acid, and sodium sulfate were rejected from the ,acid wastewater, by the homogeneous anion exchange membrane.The pretreatment is necessary to prevent membrane polluting caused by the suspended substances ,in the acid wastewater,.The ,acid, recovery,the salt rejection,and the ,acid, ...

Wastewater treatment in the fishery industry - 2 ...
Wastewater treatment in the fishery industry - 2 ...

This is the most common procedure. It basically consists of diluting the ,wastewater, (in a ratio that depends on its strength) with a nutrient (mineral salts) solution saturated with air, storing the dilution in airtight bottles, and measuring the dissolved oxygen at the start of the analysis and at periodic intervals.

PCB circuit board factory wastewater treatment - Shenzhen ...
PCB circuit board factory wastewater treatment - Shenzhen ...

PCB ,wastewater, is polychlorinated biphenyl ,wastewater,, which is a kind of ,wastewater, in the printing industry and circuit board ,wastewater,. PCB ,wastewater, is divided into: cleaning ,wastewater,, ink ,wastewater,, complex ,wastewater,, concentrated ,acid, waste liquid, and concentrated alkali waste liquid.

Wastewater treatment method of PCB circuit board factory ...
Wastewater treatment method of PCB circuit board factory ...

Characteristics of PCB ,factory wastewater,. 1. ... The emulsified waste liquid in PCB ,wastewater, was acidified with sulfuric ,acid, to pH = 2 for demulsification and oil separation treatment, ...

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