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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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Selective formation of copper nanoparticles from acid mine ...
Selective formation of copper nanoparticles from acid mine ...

XPS confirmed such nanoparticles as containing Cu°, with the Cu removal mechanism therefore likely via cementation with Fe°. Overall the results demonstrate nZVI as effective for the one-pot and selective formation of Cu°-bearing nanoparticles from acidic wastewater, with the technique therefore potentially highly useful for the selective upcycling of dissolved Cu in wastewater into high value nanomaterials.

Heavy Metals Removal Industrial Wastewater Solutions
Heavy Metals Removal Industrial Wastewater Solutions

There are four chemical reactions that represent the chemistry of pyrite weathering to form ,acid mine, drainage. An overall summary reaction is as follows: 2 FeS2+7 O2+2 H2O → 2 FeSO4-+2 H2SO4 Pyrite + Oxygen + Water → Ferrous Sulfate + Sulfuric ,Acid,. The ,acid mine, drainage waste is characterized by red water. The simplest treatment is neutralization and clarification.

Acid Mine Case Study - vsep.com
Acid Mine Case Study - vsep.com

rock that comes from the ,mine, is crushed into smaller and smaller pieces by heavy steel balls in machinery called mills. The Life Cycle ,of Acid Mine, Drainage Copper Ore from Arizona Concentrating Ground up rock is mixed with water, air bubbles and small amounts of chemicals. The chemicals allow copper minerals to rise to the top and stick to floating

Development of Innovative Wastewater Treatment ...
Development of Innovative Wastewater Treatment ...

Acid mine, drainage (AMD) and municipal ,wastewater, (MWW) are two major. pollution sources in headwaters of Appalachia and energy producing regions worldwide. Incorporating the prevalent chemistry of the two wastes in designing treatment.

Removal of Manganese(II) from Acid Mine Wastewater: A ...
Removal of Manganese(II) from Acid Mine Wastewater: A ...

There are several reasons: (1) Mn ore ,wastewater, is more acidic, and its Mn(II) concentration is much higher than that of groundwater or artificial ,wastewater,, leading to high toxicity to MnOB; (2) oxidation of coexisting ferrous ion in Mn ore ,wastewater, resulting from pyrite dissolution results in oxidizing by O 2 leading to insufficient DO concentration to support biological oxidation; (3) compared to acidic soil, nutrient sources in Mn ore ,wastewater, …

Selective formation of copper nanoparticles from acid mine ...
Selective formation of copper nanoparticles from acid mine ...

XPS confirmed such nanoparticles as containing Cu0, with the Cu removal mechanism therefore likely via cementation with Fe0. Overall the results demonstrate nZVI as effective for the one-pot and selective formation of Cu0-bearing nanoparticles from acidic wastewater, with the technique therefore potentially highly useful for the selective upcycling of dissolved Cu in wastewater into high value nanomaterials.

Catalytic wet peroxide oxidation of formic acid in ...
Catalytic wet peroxide oxidation of formic acid in ...

formic ,acid, in ,wastewater,. This study utilizes hard high-grade hematite ore as such an alternative. The ore is massive Gamagaran type ore from the Sishen Iron ,Formation, in the Northern Cape Province of the Republic of South Africa. It comprises sand to silt size hematite grains in a matrix which appears as ferruginized, hematitic sandstone and shale.

Constructed Wetlands Part II Acid Mine Drainage
Constructed Wetlands Part II Acid Mine Drainage

Constructed Wetlands Part II: ,Acid Mine, Drainage This file, "Constructed Wetlands Bibliography, Part II: ,Acid Mine, Drainage" is one section of a seven-part constructed wetlands bibliography on using constructed wetlands for ,wastewater, treatment. The bibliography was compiled by United States Department of Agriculture staff from

Research on the mechanism and reaction conditions of ...
Research on the mechanism and reaction conditions of ...

pharmaceutical industry and food and amino ,acid, industry, is mostly acidic,16,17 while the dyeing ,wastewater,, tannery ,waste-water, and other ,wastewater,, is mostly alkaline.18,19 Since the organic content in brackish water and ,mine wastewater, is low, such ,wastewater, can be used as exible water resources a er desalination.

Heavy Metals Removal Industrial Wastewater Solutions
Heavy Metals Removal Industrial Wastewater Solutions

There are four chemical reactions that represent the chemistry of pyrite weathering to form acid mine drainage. An overall summary reaction is as follows: 2 FeS2+7 O2+2 H2O → 2 FeSO4-+2 H2SO4 Pyrite + Oxygen + Water → Ferrous Sulfate + Sulfuric Acid. The acid mine drainage waste is characterized by red water. The simplest treatment is neutralization and clarification.

Sulfates in Wastewater Treatment | P2W - Pollution to Water
Sulfates in Wastewater Treatment | P2W - Pollution to Water

One of the processes that are causing high concentrations of Sulfates in water affected by mining is commonly referred to as Acid Mine Drainage (AMD) or Acid Rock Drainage (ARD), and is associated with the formation of acid water from Metal and Coal mines where pyrites are predominantly present.

Removal Mechanism in Anionic Co-precipitation with ...
Removal Mechanism in Anionic Co-precipitation with ...

A more efficient and cost-effective treatment process is required, as the national government spends billions of yen each year to protect the environment from ,acid mine, drainage discharge. Surface complexation at the interface between hydroxides such as ferrihydrite or aluminum hydroxide and ,wastewater, is the most important ,mechanism, for the removal of dilute toxic ions.

Research on the mechanism and reaction conditions of ...
Research on the mechanism and reaction conditions of ...

It had been found that there were two pathways of PDS ,formation,. The first was to form PDS through the interaction of sulfate radicals, which were generated from the oxidation reaction mediated by hydroxyl radicals, where the protonized bisulfate ions and sulfuric ,acid, were oxidized by hydroxyl radicals to …

Sulfates in Wastewater Treatment | P2W - Pollution to Water
Sulfates in Wastewater Treatment | P2W - Pollution to Water

One of the processes that are causing high concentrations of Sulfates in water affected by mining is commonly referred to as Acid Mine Drainage (AMD) or Acid Rock Drainage (ARD), and is associated with the formation of acid water from Metal and Coal mines where pyrites are predominantly present.

Treatment of Acid Mine Drainage using Magnesium Hydroxide
Treatment of Acid Mine Drainage using Magnesium Hydroxide

pH cannot be raised sufficiently. There are two mechanisms operating when metal containing acid water is neutralized with Mg(OH)2. The first mechanism is where metals are precipitated at metal hydroxides. The second mechanism is where metals are absorbed onto the surface of Mg(OH)2 particles. Teringo (1987) found that with Mg(OH)2, metals can

Catalytic wet peroxide oxidation of formic acid in ...
Catalytic wet peroxide oxidation of formic acid in ...

formic ,acid, in ,wastewater,. This study utilizes hard high-grade hematite ore as such an alternative. The ore is massive Gamagaran type ore from the Sishen Iron ,Formation, in the Northern Cape Province of the Republic of South Africa. It comprises sand to silt size hematite grains in a matrix which appears as ferruginized, hematitic sandstone and shale.

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