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The pH value of strong acid wastewater is generally 0

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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The pH value of strong acid wastewater is generally 0
Sulfuric acid - Wikipedia
Sulfuric acid - Wikipedia

14/12/2001, · The resulting gas is bubbled through nitric acid, which will release brown/red vapors of nitrogen dioxide as the ,reaction, proceeds. The completion of the ,reaction, is indicated by the ceasing of the fumes. This method does not produce an inseparable mist, which is quite convenient. 3SO 2 + 2HNO 3 + 2H 2 O → 3H 2 SO 4 + 2NO

Removing Heavy Metals From Wastewater
Removing Heavy Metals From Wastewater

process as applied to ,industrial wastewater treatment,. Definitions The following words or phrases are commonly used ... mercury, copper, ,nickel,, chromium, zinc, cadmium and tin that must be removed to certain levels to meet ... (1 - 100 mg/L) and at neutral or ,acidic, pH values (< 7.0). Both of these factors are disadvantageous with ...

Remediation of heavy metals in drinking water and ...
Remediation of heavy metals in drinking water and ...

infiltration and ,industrial, discharges. The discharge of ,wastewater containing, high concentrations of heavy metals to receiving water bodies has serious adverse environmental effects. Their occurrence and accumulation in the environment is a result of direct or *Corresponding author. E-mail: akporbo@tut.ac.za. Tel: +27(0)

US8974754B2 - Method for producing nickel-containing acid ...
US8974754B2 - Method for producing nickel-containing acid ...

The method for obtaining an acid solution, containing nickel, is, obtained, by, treating, a positive electrode material of a nickel-metal hydride battery. The method includes a water-washing step,...

Copper and nickel recovery from acidic polymetallic ...
Copper and nickel recovery from acidic polymetallic ...

As a consequence, nickel containing wastes such as spent batteries and catalysts, wastewater and, bleed-off electroly,tes are, generated in various processes,.

15 types of industrial wastewater treatment processes ...
15 types of industrial wastewater treatment processes ...

The cyanide-,containing wastewater treatment, measures mainly include: reforming the process to reduce or eliminate effluent cyanide-,containing wastewater,. If cyanide-free electroplating is used, ,industrial wastewater, in electroplating workshops can be eliminated. ,Wastewater, with high cyanide content should be recycled.

Fifteen industrial wastewater treatment processes | LCDRI CN
Fifteen industrial wastewater treatment processes | LCDRI CN

8. Cyanide-,containing wastewater,. Cyanide-,containing wastewater, mainly comes from electroplating, gas, coking, metallurgy, metal processing, chemical fiber, plastics, pesticides, and chemical industries. Cyanide-,containing wastewater, is a kind of toxic ,industrial wastewater,. It is unstable in water and easy to decompose.

Treatment of Wastewater for the Metal Industry | Advanced ...
Treatment of Wastewater for the Metal Industry | Advanced ...

Treatment of Wastewater for the Metal Industry, Metal finishing is a demanding application that carries the risk of potential pollution from hazardous waste and oils. ACS has experience designing and installing sewer discharge systems, zero-discharge systems, and systems discharging to public waste streams. Consult ,Wastewater Treatment, Solutions with ACS How We Help Treat ,Wastewater, in […]

Simultaneous recovery of phosphorus with nickel ...
Simultaneous recovery of phosphorus with nickel ...

1/2/2020, · A large of amounts heat is released during the oxidation reaction, which can affect the thermodynamics of the reaction, so the reaction temperature has a great influence on the Fe/,AC + H 2 O 2, system treating nickel plating wastewater. The reaction temperature is important for removal efficiency.

Treatment of Wastewater Containing a Mixture of Heavy ...
Treatment of Wastewater Containing a Mixture of Heavy ...

The main aim of the scientific research was to study the ion-exchange processes in the ,treatment, of ,industrial, wastewaters ,containing, a high concentration of heavy metal ions (Cu2+, Zn2 +, Ni2+). The sorption results of heavy metal mixtures (Cu-Zn, Cu-Ni) from model solutions of sulfate salts on a strong-acid KU-2–8 cation exchanger

JP2012036422A - Method for producing nickel-containing ...
JP2012036422A - Method for producing nickel-containing ...

A positive electrode material of a, nickel, metal hydride, battery, is obtained by adding a, water, to the positive electrode material of a, nickel, metal hydride, battery, and washing it with water,...

Removal of Cl(-I) from strongly acidic wastewater ...
Removal of Cl(-I) from strongly acidic wastewater ...

15/1/2021, · In this study, Cl(-I) removal from strongly ,acidic wastewater containing, Cu(II) by complexation-precipitation using thiourea (TU) was investigated. The Cl(-I) removal efficiency under different doses of TU was determined. The generated products were carefully characterized, and the mechanisms of Cl(-I) removal were clarified in detail.

(PDF) Review of the application of metal-air battery ...
(PDF) Review of the application of metal-air battery ...

arsenic-,containing wastewater, as a metal-air ,battery, electrolyte into a metal-air ,battery,, and use the ,b attery reaction, to generate substances and ,wastewater,.

Membranes | Free Full-Text | Application of Hybrid ...
Membranes | Free Full-Text | Application of Hybrid ...

Starting from these considerations, the authors tested the CP–UF process for treating ,wastewater containing nickel, using sodium polyacrylate as polymeric complexing agent. A rotating disk membrane module was used ( Figure 10 ) to generate a shear field on the membrane surface, thus evaluating the influence of the shear field on the stability of polymer-Ni complex.

Oil Industry Wastewater Treatment with Fouling Resistant ...
Oil Industry Wastewater Treatment with Fouling Resistant ...

The oil industry produces large volumes of ,wastewater,, including oil well produced water brought to the surface during oil drilling, and refinery ,wastewater,. These streams are difficult to treat due to large concentrations of oil. Ultrafiltration (UF) is very promising for their ,treatment, to remove oil, but has been limited by economic obstacles due to severe membrane fouling. In a recent ...

Constructed Wetlands and their Role in Remediation of ...
Constructed Wetlands and their Role in Remediation of ...

Constructed wetlands (CWs) are an alternative method for ,wastewater treatment, and its purification. In the past decades, CW techniques were hardly used for contamination removal [1,2], although first time in early 1950s, Dr. Kathe Seidel used constructed wetland for ,wastewater treatment, [].But evolutionary period started since the 1990s, this technique is used to treat various types of ...

Synergistic Recovery of Valuable Metals from Spent Nickel ...
Synergistic Recovery of Valuable Metals from Spent Nickel ...

Spent ,nickel,-metal hydride batteries contain 36-42% ,nickel,, 3-4% cobalt, and 8-10% mischmetal consisting of lanthanum, cerium, praseodymium and neodymium. The dismantled and processed ,nickel,-metal hydride batteries are melted in a d.c. elec. arc furnace producing a ,nickel,-cobalt alloy and a slag phase highly enriched with rare earth oxides.

(PDF) Nickel (II) Removal from Industrial Plating Effluent ...
(PDF) Nickel (II) Removal from Industrial Plating Effluent ...

In this study, the efficiency of Fenton's process to remove ,nickel, (II) from ,industrial, plating effluent was investigated. The effect of pH, contact time, concentrations of Fe 2+ and H 2 O 2 were surveyed. Kinetic experiments were performed in

Leaching in Metallurgy and Metal Recovery
Leaching in Metallurgy and Metal Recovery

1) Vat Leaching: Also known as “agitated tank” leaching, the lixiviant comes into contact with the metal material in large vats or tanks, which can be stirred, enhancing the ,reaction, kinetics. The metal ,containing, solid, such as concentrate, ore, residue, or slag, often undergoes size reduction via crushing and grinding prior to leaching.

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