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Hydrazine can treat electroplating wastewater under weak acid condition

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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Hydrazine can treat electroplating wastewater under weak acid condition
Bio-sorption for effective removal of chromium(VI) from ...
Bio-sorption for effective removal of chromium(VI) from ...

10/12/2020, · ,Chromium, is a naturally occurring metal found in the ,environment, commonly in trivalent, Cr(III), and hexavalent, Cr(VI) forms [1, 2]. The trivalent state of ,chromium, [Cr(III)] is essential for carbohydrate metabolism in humans, whereas hexavalent ,chromium, [Cr(VI)] is …

Research Article ISSN : 0975-7384 CODEN(USA) : JCPRC5
Research Article ISSN : 0975-7384 CODEN(USA) : JCPRC5

Electroplating, has widely been used for depositing protective coatings on iron and steel articles to protect them from corrosion, rusting and chemical attack. Protecting metals applied on iron and steel articles are zinc, cadmium, nickel, ,chromium,, tin and copper etc.[3] Copper and ,chromium, provide protection against rusting

Environmental Regulations and Technology: The ...
Environmental Regulations and Technology: The ...

Hazardous Waste Regulations and Management The treatment of ,electroplating wastewater, as required by the national pretreatment standards or NPDES requirements will result in two streams: • An effluenj: that must comply with regulations for acceptable pollutant discharge • A residue (sludge) ,containing, a high concentration of the substances which the ,wastewater, regulations prohibit …

Chromium sulfate | Cr2(SO4)3 - PubChem
Chromium sulfate | Cr2(SO4)3 - PubChem

The acute and subacute toxicities of several Cr(III) and Cr(VI) compounds (,chromium,(3+) chloride, ,chromium,(3+) nitrate, ,chromium,(3+) sulfate, ,chromium, trioxide, potassium dichromate) were determined in NZC and (CxO) mice injected ip.The distal median lethal doses (> 10 days after treatment) averaged (17.9 + or - 1.8) X 10(-6) g ,chromium,/g body wt regardless of the oxidation state of the Cr ...

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