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Ink wastewater precipitates under acidic conditions

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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Ink wastewater precipitates under acidic conditions
Heavy metal sequestration from contaminated water: A review
Heavy metal sequestration from contaminated water: A review

of ,metal, ions because of destruction of its matrix. Moreover, ,ion, exchange is nonspecific and is its efficiency is pH sensitive. Table 2: Heavy ,metal, sequestering by ,chemical, precipitation method Heavy ,Metal Precipitant, Optimum dose of ,Precipitant, (g/L) Optimum pH Removal Efficiency (%) References Zn2+ Cu2+ Ni2+ Pb2+ Cr3+/Cr4+ Cd2+ Ca(OH) 2, Na

Removal of Arsenic from Strongly Acidic Wastewater Using ...
Removal of Arsenic from Strongly Acidic Wastewater Using ...

26/3/2018, · Strongly acidic ,wastewater, (H2SO4) with a high arsenic concentration is produced by many industries. The removal of arsenic by traditional sulfide (e.g., Na2S, FeS) from strongly acidic ,wastewater, introduces cations (Na+ and Fe2+) to the solution, which may prevent the recycle of ,acid,. In this study, a new sulfuration agent, phosphorus pentasulfide (P2S5) was employed, and its feasibility in ...

Composition and method for simultaneously precipitating ...
Composition and method for simultaneously precipitating ...

Several polymer chemistries have been used to treat wastewater containing transition metal complexes, such as copper-ethylenediaminetetraacetic acid (EDTA), resulting in …

(PDF) INDUSTRIAL REJECTION: REMOVAL OF HEAVY METALS …
(PDF) INDUSTRIAL REJECTION: REMOVAL OF HEAVY METALS …

Common hydroxide precipitants include lime (Ca(OH)2), limestone, sodium hydroxide (NaOH),sodium bicarbonate (Na(HCO3)2), sodium sulfide (Na2S) and sodium hydrosulfide (NaHS),which can release hydroxide ,ion, bound metals to form insoluble hydroxide precipitates [14, 15, 16, 17].The selection of these chemicals should be able to meet the maximum contaminant level standards or to reach the desired final concentration required for recycling [18, 19, 20, 21].As legislation for ,metal, …

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