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Deacidification of acid wastewater

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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Deacidification of acid wastewater
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Subject: "acid mine drainage" - PubAg Search Results

A new insight into the way in which the mineralogical composition and texture (liberation) of sulfides govern the geochemical behavior of the tailings in terms ,of acid mine, drainage (AMD) ,generation, is presented. Two samples were taken from Dundee Precious Metals Chelopech (DPM-Ch) tailings management facility (TMF).

Microbial Community Shifts in Response to Acid Mine ...
Microbial Community Shifts in Response to Acid Mine ...

This ,acid mine drainage, (AMD) is generated when metal sulfide minerals, mainly pyrite, are oxidized in the presence of water and accelerated by the action of chemolithotrophic bacteria. This generates acidity and mobilizes large concentrations of iron (Fe), and other toxic trace metals and metalloids, depending on the composition of the exposed rock ( Robb, 1994 ; Mason, 2002 ).

Zooglea Ramigera - Wastewater Treatment - Ecology Center
Zooglea Ramigera - Wastewater Treatment - Ecology Center

6/1/2021, · This is a major cause of the environmental problem known as ,acid mine, drainage (Section 13.4.3) and can also occur in clay soils containing pyrites if they are exposed to the air. Some hot springs and marine thermal vents also are sources of sulfides. Other sulfur oxidizers prefer or require neutral pH.

Removal of antimony from antimony mine flotation wastewater ...
Removal of antimony from antimony mine flotation wastewater ...

No. 7 Removal of antimony from antimony ,mineflotation wastewater by electrocoagulation with aluminum, electrodes 1067 electrorefining ,wastewater, with high Sb concentrations up to 1500 mg/L (Koparal et al., 2004), but its application to ,wastewater, of low Sb concentration has not been reported. Electrocoagulation technology is an effective electro-

Wastewater Treatment through Low Cost Adsorption ...
Wastewater Treatment through Low Cost Adsorption ...

7/4/2016, · 1.1. Introduction. One of the two major environmental problems concerning the management of liquids in mining and mining-related activities, particularly relevant to a country like Chile, is the natural ,generation, of acidic ,mine, drainages (AMD) or acidic rock drainages (ARD) produced by chemical and/or microbial oxidation of sulphides in the presence of air and water [1, 2].

(PDF) The use of low-cost adsorbents for wastewater ...
(PDF) The use of low-cost adsorbents for wastewater ...

Mine, wastewaters can be categorized into three groups according to their ,acid,-base properties: ,acid mine, drainage (AMD) with pH at 6 and below, neutral ,mine, drainage with pH 6 and above, and saline ,mine, drainage with pH above 6 containing more than 1,000 mgL −1 carbonates (Wolkersdorfer 2008).Natural oxidation of sulfide minerals, together with reactions of the base minerals in the rock ...

Microbial Community Shifts in Response to Acid Mine ...
Microbial Community Shifts in Response to Acid Mine ...

This ,acid mine drainage, (AMD) is generated when metal sulfide minerals, mainly pyrite, are oxidized in the presence of water and accelerated by the action of chemolithotrophic bacteria. This generates acidity and mobilizes large concentrations of iron (Fe), and other toxic trace metals and metalloids, depending on the composition of the exposed rock ( Robb, 1994 ; Mason, 2002 ).

Frontiers | The Potential Role of Halothiobacillus spp. in ...
Frontiers | The Potential Role of Halothiobacillus spp. in ...

The biogeochemistry ,of acid mine, drainage (AMD) derived from waste rock associated sulfide mineral oxidation is relatively well-characterized and linked to Acidithiobacillus spp.. However, little is understood about the microbial communities and sulfur cycling before AMD develops, a …

Methanogenesis from wastewater stimulated by addition of ...
Methanogenesis from wastewater stimulated by addition of ...

This study presents a novel procedure for accelerating methanogenesis from ,wastewater, by adding elemental manganese into the anaerobic digestion system. The results indicated that elemental ...

Methanogenesis from wastewater stimulated by addition of ...
Methanogenesis from wastewater stimulated by addition of ...

This study presents a novel procedure for accelerating methanogenesis from ,wastewater, by adding elemental manganese into the anaerobic digestion system. The results indicated that elemental ...

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

The objectives of this study are as follows: firstly, to clearly analyze and explain the ,mechanism, of the ,generation, of persulfate by electrolysis of sulfate on BDD anode through experimental methods, especially the main pathways of persulfate synthesis under the condition of low sulfate concentration; secondly, to evaluate the economy and feasibility of preparing persulfate with sulfate-containing ,wastewater, …

Significance of bio-treatment by acid washing for ...
Significance of bio-treatment by acid washing for ...

Mining activities can lead to the ,generation, of large quantities of heavy metal, specifically arsenic which is released from a gold ,mine,, causing widespread contamination of the ecosystem. Removal of carcinogenic and toxic arsenic from ,wastewater, is essential for the safety of water that may be used for irrigation or drinking.

PASSIVE BIOLOGICAL TREATMENT OF ACID MINE DRAINAGE ...
PASSIVE BIOLOGICAL TREATMENT OF ACID MINE DRAINAGE ...

1.1 ,Acid mine, drainage formation There is now relatively good knowledge about AMD ,generation,, a combined (chemical and biological) process, even though the detailed ,mechanism, by which pyrite is converted to sulfates and iron oxyhydroxides still needs to …

Batch removal of manganese from acid mine drainage using ...
Batch removal of manganese from acid mine drainage using ...

The ,generation of acid mine, drainage (AMD) is one of the most serious environmental problems faced by the mining industry nowadays. AMD occurs when pyrite and/or other sulfide minerals are oxidized due to their exposure to oxygen and water, thus producing sulfuric ,acid, that can dissolve metal species, resulting in the contamination of the environment (Nascimento, 1998).

An Overview of Nanomaterials for Water and Wastewater ...
An Overview of Nanomaterials for Water and Wastewater ...

Due to the exceptional characteristics which resulted from nanoscale size, such as improved catalysis and adsorption properties as well as high reactivity, ,nanomaterials, have been the subject of active research and development worldwide in recent years. Numerous studies have shown that ,nanomaterials, can effectively remove various pollutants in water and thus have been successfully applied in ...

Study on Treatment of Salicylhydroxamic Acid Wastewater ...
Study on Treatment of Salicylhydroxamic Acid Wastewater ...

Salicylhydroxamic acid, is an excellent collector of oxidizing ore, and it has an efficient collection performance for ,tungsten molybdenum, ore. However, the utilization ratio of ,salicylhydroxamic acid, is relatively low in the flotation process, and a large amount of flotation ,wastewater, discharged might cause damage to the water environment.

Heavy metal removal and neutralization of acid mine waste ...
Heavy metal removal and neutralization of acid mine waste ...

1/12/2007, · ,Acid generation, and metal dissolution are the primary problems associated with pollution due to mining activities. Pyrite ([FeS.sub.2]) is responsible for starting ,acid generation, and metal dissolution in coal and metal mines as previously shown (Younger et al., 2002) by Equations (1) to (4):

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