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Acid solution wastewater from a factory

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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Acid solution wastewater from a factory
Sulfide precipitation of heavy metals
Sulfide precipitation of heavy metals

----- TEST RUN 1 Description of ,wastewater,: Rinse from ,copper, printed circuit etching ,and copper, deposition (electrolytic and electroless) Source area: Seattle, Washington Treatment process details* Precipitation pH for lime-only and lime- with-,sulfide, processes 8.5 Chemical analysis Measurement Cd Cr (total) Cu Ni Zn PH Conductivity* Color Cr6+ Hg Pb Ag Sn Sludge volumet LO: 2 LWS: 2 Process ...

Treating Metal Finishing Wastewater
Treating Metal Finishing Wastewater

Heavy metals typically present in metal finishing ,wastewater, are cadmium, chromium, ,copper,, lead, nickel, silver, tin, and zinc. Table 1 ... and the entire treatment requires several adjustments of pH as well as the addition of ,acid,, coagulant, lime or ... ,sulfide, precipitation is about 10 …

Treating Metal Finishing Wastewater
Treating Metal Finishing Wastewater

Heavy metals typically present in metal finishing ,wastewater, are cadmium, chromium, ,copper,, lead, nickel, silver, tin, and zinc. Table 1 ... and the entire treatment requires several adjustments of pH as well as the addition of ,acid,, coagulant, lime or ... ,sulfide, precipitation is about 10 …

Hydrothermal Treatment of Arsenic Sulfide Residues from ...
Hydrothermal Treatment of Arsenic Sulfide Residues from ...

In the smelting of ,copper, or lead-zinc ore, larger amounts of acidic ,wastewater, are discharged when gaseous emission containing SO 2, As, Cu, Pb, Zn and other impurities are washed with diluted ,acid, . Moreover, wasted electrolyte with a high concentration of arsenic is produced abundantly in ,copper, and lead-zinc electrolyte processes [8,9].

Effects of Copper on Fish and Aquatic Resources
Effects of Copper on Fish and Aquatic Resources

Copper, (Cu) ,Sulfide, Ore Mining of Cu ,sulfide, ores exposes sulfides to water and air creating ,acid,, which dissolves Cu; storm water can then carry Cu into ground and surface waters (Cox et al. 1996, Ripley et a l. 1996, USEPA 2000, Younger 2002, Gusek and Figueroa 2009). Samples from Cu ,sulfide, deposits in Bristol Bay show high potential for ,acid

Research on Treating Acid Wastewater Containing Heavy Metal
Research on Treating Acid Wastewater Containing Heavy Metal

experiment, it was feasible to use SRB to absorb the ,copper, in the mine ,wastewater, diluted. The removal rate of ,copper, ions could reach 99.8% and 100% after operating 24d [29]. Furthermore, some experiments showed that the removal rate of ,copper, ions were 99.9% under the conditions of pH 7, 35°C and the ratio of COD/SO. 4 2-at 3 [30]. On the ...

Treatment of Arsenic in copper smelting
Treatment of Arsenic in copper smelting

more than 2 million tons of polymetallic concentrates per year and produces about 30,000 t/a ,copper, smelting dust with average content of 7.5% As. It also produces about 8000 t/a arsenic ,sulfide, residues (dry basis, 22% As). The recovery of the two kinds of arsenic …

Hydrogen Sulfide Corrosion In Wastewater Collection And ...
Hydrogen Sulfide Corrosion In Wastewater Collection And ...

Wastewater, pH measurements were 6 at four of the industrial sites, 5.5 at one site, and 10 at the remaining site. ,Wastewater sulfide, ranged from 0.0 to 0.3 mg/1. The ,wastewater sulfide, level was 0.05 mg/1 at the site where ,wastewater, pH was 5.5, and 0.0 mg/1 at the site where ,wastewater, pH was 10.

Hydroxide Precipitation of Metals | Hoffland Environmental ...
Hydroxide Precipitation of Metals | Hoffland Environmental ...

The ,sulfide, solubility chart below demonstrates the solubility of the metal ,sulfide, compounds. ,Copper sulfide,, for example, is a very insoluble compound and the presences of soluble ,sulfide, precipitates the ,copper, as it dissociates from the ammonical complex. Ultimately, the ,copper, is all removed from the complex and precipitated as ,copper sulfide,.

Causes of Corrosion and Corrosion Monitoring - Purafil
Causes of Corrosion and Corrosion Monitoring - Purafil

Active sulfur compounds include hydrogen ,sulfide,, elemental sulfur, and organic sulfur compounds such as the mercaptans. When present at low parts per billion levels, they rapidly attack ,copper,, silver, aluminum, and iron alloys. The presence of moisture and small amounts of inorganic chlorine compounds greatly accelerates ,sulfide, corrosion.

Mitigating the generation of acid mine drainage from ...
Mitigating the generation of acid mine drainage from ...

Acid, mine drainage (AMD) is one of the most serious and pervasive challenges facing the minerals industry. Current philosophy in ,sulfide, tailings management takes an end-of-pipe approach which is yet to be shown to be sufficient to prevent post-closure impacts from AMD and guarantee "walk-away" status. An improved, integrated approach to tailings management and AMD mitigation is proposed ...

Causes of Corrosion and Corrosion Monitoring - Purafil
Causes of Corrosion and Corrosion Monitoring - Purafil

Active sulfur compounds include hydrogen ,sulfide,, elemental sulfur, and organic sulfur compounds such as the mercaptans. When present at low parts per billion levels, they rapidly attack ,copper,, silver, aluminum, and iron alloys. The presence of moisture and small amounts of inorganic chlorine compounds greatly accelerates ,sulfide, corrosion.

Effects of Copper on Fish and Aquatic Resources
Effects of Copper on Fish and Aquatic Resources

Copper, (Cu) ,Sulfide, Ore Mining of Cu ,sulfide, ores exposes sulfides to water and air creating ,acid,, which dissolves Cu; storm water can then carry Cu into ground and surface waters (Cox et al. 1996, Ripley et a l. 1996, USEPA 2000, Younger 2002, Gusek and Figueroa 2009). Samples from Cu ,sulfide, deposits in Bristol Bay show high potential for ,acid

Acid mine drainage - Wikipedia
Acid mine drainage - Wikipedia

The most commonly mined ore of ,copper,, chalcopyrite, is itself a ,copper,-iron-,sulfide, and occurs with a range of other sulfides. Thus, ,copper, mines are often major culprits of ,acid mine drainage,. At some mines, acidic drainage is detected within 2–5 years after mining begins, whereas at other mines, it is not detected for several decades.

Frontiers | Copper Sulfide Based Heterojunctions as ...
Frontiers | Copper Sulfide Based Heterojunctions as ...

The presence of toxic, non-biodegradable and harmful organic pollutants in soils, ,wastewater,, and atmosphere has become an indisputable, and global fact as a significant environmental problem. The heterogeneous photocatalysis, an advanced oxidation process (AOP) using semiconductor materials as catalysts, is a topic of great interest considering the possibility of the pollutants removal from ...

Sulfide precipitation of heavy metals
Sulfide precipitation of heavy metals

----- TEST RUN 1 Description of ,wastewater,: Rinse from ,copper, printed circuit etching ,and copper, deposition (electrolytic and electroless) Source area: Seattle, Washington Treatment process details* Precipitation pH for lime-only and lime- with-,sulfide, processes 8.5 Chemical analysis Measurement Cd Cr (total) Cu Ni Zn PH Conductivity* Color Cr6+ Hg Pb Ag Sn Sludge volumet LO: 2 LWS: 2 Process ...

Method for recovering copper sulfide and ferric hydroxide ...
Method for recovering copper sulfide and ferric hydroxide ...

The invention discloses a method for recovering ,copper sulfide, and ferric hydroxide in auricupride ,acid wastewater, through a sulfidization method. The method comprises three steps: recovering ferric hydroxide, recovering ,copper sulfide, and recovering gypsum. The different metal concentrations and solution pH are controlled according to the difference of various metal deposit solubility ...

Copper Sulfide Mining Threatens the Boundary Waters ...
Copper Sulfide Mining Threatens the Boundary Waters ...

Copper sulfide, mining extracts ,sulfide, ores which contain metals that are bonded to the sulfur. The process breaks apart the ore, exposing it to air and water, then soaks it in chemicals to release ,copper, and other minerals. A small percentage of the ore is actually metal, most of it is ,sulfide, that turns to sulfuric ,acid, in the process.

Technical Resource Document: Copper | US EPA ARCHIVE …
Technical Resource Document: Copper | US EPA ARCHIVE …

EPA 530-R-94-031 NTIS PB94-200979 ,TECHNICAL RESOURCE DOCUMENT, EXTRACTION AND BENEFICIATION OF ORES AND MINERALS VOLUME 4 ,COPPER, August 1994 U.S. Environmental Protection Agency

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