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Recovery of wastewater containing sodium sulfide with acid solution

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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Recovery of wastewater containing sodium sulfide with acid solution
Removal of heavy metal ions from wastewaters: A review ...
Removal of heavy metal ions from wastewaters: A review ...

1/3/2011, · The possibility of using SRB for the treatment of an ,acid mine, drainage was also studied (Alvarez et al., 2007). However, there are potential dangers in the use of sulfide precipitation process. As we know, heavy metal ions often in ,acid, conditions and sulfide precipitants in acidic conditions can result in the evolution of toxic H 2 S fumes.

Treatment of arsenic in acid wastewater and river sediment ...
Treatment of arsenic in acid wastewater and river sediment ...

Main content area. Treatment ,of arsenic in acid wastewater, and river sediment by Fe@Fe2O3 nanobunches: The effect of environmental conditions and reaction mechanism

Acid Mine Drainage | nevraahmad's Blog
Acid Mine Drainage | nevraahmad's Blog

4/6/2014, · ,Acid mine drainage, caused some of environmental problem in mining atmosphere, It disrupts growth and reproduction of aquatic plants and animals, diminishes valued recreational fish species, degrades surface and groundwater drinking supplies, and ,causes acid, corrosion of infrastructure like ,wastewater, pipes.

The Fate and Function of Acid Mine Drainage | Ohio Water ...
The Fate and Function of Acid Mine Drainage | Ohio Water ...

As water leaches out, this ,acid mine, drainage (AMD) contains naturally high levels of acidity and dissolved minerals and metals, some of which are toxic. The AMD mixes with the surrounding water and ,causes, an increase in acidity and concentration of toxic metals, a condition which impairs the water and prevents aquatic life from thriving.

Treatment of arsenic in acid wastewater and river sediment ...
Treatment of arsenic in acid wastewater and river sediment ...

15/6/2017, · High concentration of arsenic in acid wastewater and polluted river sediment caused by metallurgical industry has presented a great environmental challenge for decades., Nanoscale zero valent iron, (nZVI) can detoxify arsenic-bearing wastewater and groundwater, but the low adsorption capacity and rapid passivation restrict its large-scale application.

(PDF) Arsenic removal from industrial wastewater
(PDF) Arsenic removal from industrial wastewater

Arsenic adsorption proceeds in acidic solutions with a partial release of molybdate and tungstate and with residual concentrations of arsenic above the regulations for drinking water.

Why Tens of Thousands of Toxic Mines Litter the U.S. West ...
Why Tens of Thousands of Toxic Mines Litter the U.S. West ...

Last week, the U.S. Environmental Protection Agency (EPA) accidentally released three million gallons of toxic waste into the Colorado waterway during efforts to clean up a long-defunct gold ,mine,.

Treatment of high arsenic content wastewater by a combined ...
Treatment of high arsenic content wastewater by a combined ...

20/4/2011, · The, arsenic wastewater, was obtained from a sulfuric acid factory in central China. The total, arsenic, concentration was 450–480 mg/L and As (III) in wastewater was about 120–150 mg/L. The pH of the, wastewater, was as low as 2.31–2.62.

Disposal of high-arsenic waste acid by the stepwise ...
Disposal of high-arsenic waste acid by the stepwise ...

High-arsenic waste acid, a hazardous acid wastewater, is mainly produced by heavy nonferrous (Cu, Pb, Zn, Ni, and Sn, etc.), smelting, plant. The high-arsenic waste acid used in this study was obtained from a copper, smelting, plant equipped with Isa furnace in southwest China.

Acid Mine Drainage Status and Water Quality Parameter in ...
Acid Mine Drainage Status and Water Quality Parameter in ...

Abstract: Acid Mine Drainage (AMD) is a very common environmental pollution problem which occurs worldwide in mining region. AMD forms when sulfide minerals in rocks are exposed to oxidizing condition in coal and metal mining, highway construction and

Arsenic removal from water/wastewater using adsorbents—A ...
Arsenic removal from water/wastewater using adsorbents—A ...

Arsenic, is mobilized by natural weathering reactions, bio-logical activity, geochemical reactions, volcanic emissions and other anthropogenic activities. Soil erosion and leach-ing contribute to 612×108 and 2380×108 g/year ,of arsenic,, respectively,indissolvedandsuspendedformsintheoceans[3]. Most environmental ,arsenic, problems are the result of mobi-

Polyacrylamide for steel wastewater
Polyacrylamide for steel wastewater

The scale of ,mine wastewater, treatment must be reasonably determined, and the water quality of the treated water should not fluctuate too much. Set up a regulating pool and a regulating reservoir, and collect the water first, and then treat it. ,Mine wastewater, is sulfuric ,acid, type ,wastewater,, with a general pH of 1.6. Such a low sulfuric ,acid, ...

(PDF) Arsenic removal from industrial wastewater
(PDF) Arsenic removal from industrial wastewater

Arsenic adsorption proceeds in acidic solutions with a, partial release of molybdate and tungstate, and with, residual concentrations of arsenic above the regulations, for, drinking water.

Peristaltic pumps rectifies the pH balance of acid mine water
Peristaltic pumps rectifies the pH balance of acid mine water

Studies show that ,acid, water levels in the country's mines are rising at a staggering average rate of 0.59 m/day. The water situation is in fact threatening the population’s survival. At the heart of resolving this problem are the treatment of water and ,wastewater,.

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

After stripping, the HDS slurry from the densification tank and the ,acid mine, drainage stream are mixed in the reaction/aeration tank(s). The combination of aeration, high pH, and mixing ,causes, the iron, manganese, and other heavy metals (if present) to precipitate to the fullest extent possible at the set pH level. Thickening/Clarification

An assessment of the Causes of Lead Pollution and the ...
An assessment of the Causes of Lead Pollution and the ...

The concentration of free lead is increased when the pH of the soil is more acidic (near pH 5). The solubility of lead phosphate, which is an insoluble compound, was enhanced by a 0.15 M citric ,acid, solution , and oxalic ,acid, was the best at enhancing the solubility of pyromorphite (Pb 5 (PO 4) 3 Cl), an insoluble phosphate [81, 82].

The Ultimate Guide to Wastewater Treatment
The Ultimate Guide to Wastewater Treatment

By recovering metals from ,wastewater, in a pure form, they can be recycled within the manufacturing process or sold to generate revenue to offset treatment costs. Furthermore, treating so-called 'bleed streams' in this way allows for the recycling of the effluent decreasing the need for fresh water and chemicals such as ,acid,, caustic, etc.

Green Mining Green World: Acid Mine Drainage
Green Mining Green World: Acid Mine Drainage

Acid mine drainage caused some of environmental problem in mining atmosphere, It disrupts growth and reproduction of aquatic plants and animals, diminishes valued recreational fish species, degrades surface and groundwater drinking supplies, and causes acid corrosion of infrastructure like wastewater pipes.

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