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Remediation of acid mine wastewater by adsorption

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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Remediation of acid mine wastewater by adsorption
Removal of heavy metals from electroplating wastewater by ...
Removal of heavy metals from electroplating wastewater by ...

from washing water baths after ,electroplating, step were clear as almost all solids were soluble. Some soluble salts gave colorful solution. Rinsed water from the Zn ,electroplating, process was neutral and the rest were ,acidic,. By several sam-pling analysis, it was found that the properties of ,wastewater, from ,electroplating, process varied

Treatment system and process for treating acidic copper ...
Treatment system and process for treating acidic copper ...

The invention discloses a treatment system for treating ,acidic, copper-containing ,electroplating wastewater,. The treatment system comprises a ,wastewater, collecting unit, a pre-treatment unit, an ultra-filtration unit, a concentration unit and a reverse osmosis unit which are sequentially communicated by a pipeline, wherein the ,wastewater, collecting unit comprises a ,wastewater, collecting barrel ...

Heavy Metal Complexes Wastewater Treatment with Chelation ...
Heavy Metal Complexes Wastewater Treatment with Chelation ...

Abstract: In view of the existing technical problems about treatment of ,electroplating wastewater, , the new technology of processing ,electroplating wastewater, with organic heavy metal chelator-dithiocarbamates is developed. Using ,electroplating wastewater, containing copper, nickel and chromium complexes with EDTA, ammonia and citric acid as an example, this study investigated the …

Nickel removal from electroplating industry wastewater: A ...
Nickel removal from electroplating industry wastewater: A ...

electroplating, industry ,wastewater, is released directly into the surface water bodies. The nickel ,electroplating wastewater, contains high nickel pollution along with other process parameters. The low pH is used for plating on metal surface using nickel ion leads to nickel ion retained in the ,wastewater, along with ,acidic, pH.

Simultaneous Silver Recovery and Cyanide Removal from ...
Simultaneous Silver Recovery and Cyanide Removal from ...

Then the influences of technological conditions on the ,electroplating wastewater, treatment process were investigated, which manifested that the concentration of silver ions in ,electroplating wastewater, could be reduced from 221 to 0.4 mg L–1 and cyanide could be simultaneously removed from 157 to 4.9 mg L–1 after 3.0 h of PC electrolysis at pH 9.5 ± 0.5, aeration rate of 100 L h–1, and ...

REMOVAL OF HEXAVALENT CHROMIUM FROM ELECTROPLATING ...
REMOVAL OF HEXAVALENT CHROMIUM FROM ELECTROPLATING ...

2-ions in ,acidic, medium according to reaction (1), as already stated. The generated H 2 gas produced at the cathode can remove dissolved organics or any suspended material by flotation. Furthermore, Fe3+ ions undergo hydration and give, depending on pH, cationic species such as Fe(OH)2+, Fe(OH) 2 2+ in ,acidic, conditions, Fe(OH) 3 in neutral

Electroplating wastewater treatment procedures and management
Electroplating wastewater treatment procedures and management

Characteristics of ,wastewater, pollution in the ,electroplating, industry The quality of ,wastewater, in the ,electroplating, industry is complex. The ,wastewater, contains heavy metal ions such as chromium, zinc, copper, nickel, and cadmium, as well as acids, alkalis, cyanides and other very toxic impurities.

Treatment of Electroplating Chromic Wastewater - avs ...
Treatment of Electroplating Chromic Wastewater - avs ...

The main components of ,electroplating wastewater, are inorganic substances, such as heavy metals: chrome, zinc, nickel, copper, cadmium etc. Hexavalent chrome compounds are especially hazardous. To toxicity of Сr6+ is in the suppression of growth, retardation of metabolic processes in the form of genetic, gonadotropic, embryotropic changes, while chrome compounds are highly carcinogenic.

Nickel removal from electroplating industry wastewater: A ...
Nickel removal from electroplating industry wastewater: A ...

electroplating, industry ,wastewater, is released directly into the surface water bodies. The nickel ,electroplating wastewater, contains high nickel pollution along with other process parameters. The low pH is used for plating on metal surface using nickel ion leads to nickel ion retained in the ,wastewater, along with ,acidic, pH.

Characterization and Treatment of Real Wastewater from an ...
Characterization and Treatment of Real Wastewater from an ...

23/5/2019, · The rejection of the stage of ,electroplating, deposit contains widely metals and the following anions: BO 3−, CO 2− 3, Cr 2 O 2− 7, F −, PO 4 3−, Cl −, NO −3 and SO 4 2−. Generally, ,wastewater, contains many heavy metals. The most important of cations are Cr 6+, it is reduced to Cr 3+, while CN-is oxidized in the preliminary ...

The Adsorption Characteristic of Heavy Metals from ...
The Adsorption Characteristic of Heavy Metals from ...

The results showed that the best acidic conditions was pH = 7 ~ 8, and δ-MnO 2 combined with PFS adsorption on heavy metals of wastewater with Cu 2+, Pb 2+, Cr 3+ was better than the single use of δ-MnO 2 and PFS, δ-MnO 2: PFS for the 3:1 quality ratio, the first dosage of δ-MnO 2 stirring for half an hour then plus PFS mixing 2 hours, the heavy metal ions Cu 2+, Pb 2+, Cr 3+ from wastewater in the removal …

Removal of Cr(VI) From Electroplating Industry Effluent ...
Removal of Cr(VI) From Electroplating Industry Effluent ...

All chemicals were analytical reagent grade. The test ,wastewater, samples were obtained from the metal plating plant effluent, and its conductivity, pH values, and Cl–, NO3–, SO42–, and Cr(VI) contents are shown in Table 1. Table 1. Properties of the collected ,electroplating, industry effluent

Treatment of Electroplating Waste -- Student Project
Treatment of Electroplating Waste -- Student Project

2000. A. Anusha: Some good books available on the ,treatment of electroplating waste, include: "Operation and Maintenance of Surface ,Finishing Wastewater, Treatment Systems" [affil. link to book on Amazon] and Water and Waste Control For the Plating Shop".For a much briefer treatment of the subject, there is coverage in the Metal ,Finishing, Guidebook, the "Products ,Finishing," Directory, and the ...

Electroplating- Lenntech
Electroplating- Lenntech

Wastewater, composition: Almost all the substances and products used in ,electroplating, can be found in the ,wastewater,, for instance ,acidic, solutions, toxic metals, solvents, and cyanides. This contamination is a consequence of the different process steps such as spillage, rinsing, dumping of process baths.

Characterization and Treatment of Real Wastewater from an ...
Characterization and Treatment of Real Wastewater from an ...

23/5/2019, · The rejection of the stage of ,electroplating, deposit contains widely metals and the following anions: BO 3−, CO 2− 3, Cr 2 O 2− 7, F −, PO 4 3−, Cl −, NO −3 and SO 4 2−. Generally, ,wastewater, contains many heavy metals. The most important of cations are Cr 6+, it is reduced to Cr 3+, while CN-is oxidized in the preliminary ...

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