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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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CA2792400A1 - Method for wastewater treatment for ...
CA2792400A1 - Method for wastewater treatment for ...

The wastewater treatment method is to control precipitation of magnesium from the sulfuric acid acidified wastewater containing aluminum, magnesium, and manganeseso as to obtain demanganized...

Analysis Method for pH and Alkalinity | Water Resources ...
Analysis Method for pH and Alkalinity | Water Resources ...

Changes in acidity can be caused by atmospheric deposition (acid rain or acid shock from snowmelt), surrounding rock, and wastewater discharges. Technically, the pH scale measures the logarithmic concentration of hydrogen (H+) and hydroxide (OH-) ions, which make up water (H+ + OH- = H20).

Acid rain is yesterday’s news? | IGB
Acid rain is yesterday’s news? | IGB

In addition to atmospheric inputs, the drainage of wetlands, the lowering of groundwater levels for opencast lignite mining, fertiliser leaching from agricultural soils and agricultural and industrial wastewater are primarily responsible for this. Fertilisers and pesticides surpass acid rain in …

Acid rain is yesterday's news? - Sulfate in water bodies ...
Acid rain is yesterday's news? - Sulfate in water bodies ...

In North America and Europe, ,after, power plants were retrofitted with flue gas desulphurisation in the 1980s, atmospheric sulphur inputs decreased significantly – in Germany by 90 percent in the last thirty years. The danger of “,acid rain,” seemed to have been banished.

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Road West, North Branch, Jingkai Road, Puyang City