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Principle of neutralizing 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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Principle of neutralizing acid wastewater
(PDF) Carbide sludge management in acetylene producing ...
(PDF) Carbide sludge management in acetylene producing ...

Carbide, sludge (10.4-11.5 tonnes day (-1)) is generated from the reaction of ,calcium carbide, (900 kg) and water (6,000 L) in the production of acetylene (2,400 m3), in three selected acetylene ...

Rubber recovery from centrifuged natural rubber latex ...
Rubber recovery from centrifuged natural rubber latex ...

Waste, latex sludge from centrifuged ,residue,, which is a null by-product of concentrated latex manufacturing, was digested to retrieve the rubber by using sulfuric ,acid,. It was found that the ,acid, concentration and digestion time have an effect on the amount and purity of the retrieved rubber.

Guides to Pollution Prevention: Metal Casting and Heat ...
Guides to Pollution Prevention: Metal Casting and Heat ...

One desulfurization agent commonly used is solid ,calcium carbide, (CaCj). ,Calcium carbide, is thought to decom- pose to ,calcium, and graphite. The ,calcium carbide, desulfurization ,slag, is generally removed from the molten kon in the ladle and placed into a hopper. For adequate sulfur removal, ,calcium carbide, must be added in slight excess.

Typical Wastes Generated by Industry Sectors | Hazardous ...
Typical Wastes Generated by Industry Sectors | Hazardous ...

26/11/2019, · ,Acid, or alkaline cleaners, ethyl benzene, residuals (heels) from shipment of product or hazardous ,waste,, residues from ,wastewater, treatment, spent solvents, volatile organic emissions, and ,wastewater, D001 (residuals, solvent wastes), D002 (cleaners, residuals, wastewaters), F003 (ethyl benzene), F and K ,waste, codes (residuals from shipment of F- and K-listed ,waste,), and P and

Acid Digestion - an overview | ScienceDirect Topics
Acid Digestion - an overview | ScienceDirect Topics

This has the effect of oxidising the organic constituents of the ,waste,. Carbon dioxide, nitrogen and water are produced. The end product is an organic-free salt ,residue, which retains most of the ,waste, radionuclides. The production of ,acid, gas emissions is inhibited by the formation of the stable salts.

Special Wastes | Hazardous Waste | US EPA
Special Wastes | Hazardous Waste | US EPA

Process wastewater, from hydrofluoric ,acid, production. Air pollution control dust/sludge from iron blast furnaces. Iron blast furnace slag. Treated ,residue, from roasting/leaching of chrome ore. ,Process wastewater, from primary magnesium processing by the anhydrous ,process,. ,Process wastewater, from phosphoric ,acid, production

Extraction and recovery of lithium | Industrial wastewater ...
Extraction and recovery of lithium | Industrial wastewater ...

The ,process, begins with the manual disassembly of these to separate the ,residue, of interest, then a reduction in size is carried out and between 560 and 800 μm is reached from the ,waste, of the devices, respectively. Aluminum and copper are leached with ammonium hydroxide to eliminate interference reactions at later stages.

Reduction of iron (II) ions in synthetic acidic wastewater ...
Reduction of iron (II) ions in synthetic acidic wastewater ...

the calcium carbide residue adsorbent which controls, the rate of removal of iron (II) ions in synthetic acid w aste water, solutions. The pseudo second - order kinetics model was stated in Eq.

CN101891229A - Method for preparing high-purity calcium ...
CN101891229A - Method for preparing high-purity calcium ...

The method comprises the following steps of: crushing, screening, and heating and combusting the ,carbide slag, in a microwave-assisted mode to preprocess the ,carbide slag,; mixing the ,carbide slag, and 1.2 to 2.0 mol/L solution of ammonium chloride or solution of ammonium nitrate to perform leaching; filtering the mixture to obtain a filtrate; adding water-soluble ionic liquid into the filtrate to obtain mixed …

Effluent Treatment Plant Design Operation And Analysis Of ...
Effluent Treatment Plant Design Operation And Analysis Of ...

Effluent Treatment Plant: Design, Operation And Analysis, Of ,Waste Water, 15Table 1: ,Wastewater, Treatment Levels and Processes Treatment Level Description ProcessPreliminary Removal of large solids such as rags, Physical sticks, grit and grease that may damage equipment or result in operational problemsPrimary Removal of floating and settleable Physical and chemical materials such as …

US4705638A - Waste water treatment - Google Patents
US4705638A - Waste water treatment - Google Patents

A method of treating, wastewater containing a contaminant selected, from the group consisting of heavy metal cations,, tars,, oils and phenols or mixtures thereof, comprising mixing said wastewater...

Development of the Acidic Mining Wastewater Treatment ...
Development of the Acidic Mining Wastewater Treatment ...

Research and Application of, Substitution of Lime, by Calcium Carbide Slag to Treat Acid Water[J]. Express Information of Mining Industry,2007 (04):: 41-43.

Carbide lime in acid mine drainage treatment - ScienceDirect
Carbide lime in acid mine drainage treatment - ScienceDirect

1/2/2017, · The objective of this study is to find a suitable quantity of car,bide lime, in acid mine drainage (AMD) treatment. Carbide, lime,, which is a waste of acetylene gas process was used as neutralisation material in AMD treatment. This study used carbide, lime,, because it has high calcium content that can increase pH value of AMD.

Industrial Wastewater Treatment | IWA Publishing
Industrial Wastewater Treatment | IWA Publishing

Industrial wastewater treatment, covers the mechanisms and processes used to treat waters that have been contaminated in some way by anthropogenic industrial or commercial activities prior to its release into the environment or its re-use. Most industries produce some wet ,waste, although recent trends in the developed world have been to minimise such production or recycle such

40 CFR § 261.3 - Definition of hazardous waste. | CFR | US ...
40 CFR § 261.3 - Definition of hazardous waste. | CFR | US ...

(a) A solid ,waste,, as defined in § 261.2, is a ,hazardous waste, if: (1) It is not excluded from regulation as a ,hazardous waste, under § 261.4(b); and (2) It meets any of the following criteria: (i) It exhibits any of the characteristics of ,hazardous waste, identified in subpart C of this part. However, any mixture of a ,waste, from the extraction, beneficiation, and processing of ores and ...

Sewage treatment - Wikipedia
Sewage treatment - Wikipedia

Sewage treatment, is the ,process, of removing contaminants from domestic and municipal ,wastewater,, containing mainly household sewage plus some industrial ,wastewater,.Physical, chemical, and biological processes are used to remove contaminants and produce treated ,wastewater, (or treated effluent) that is safe enough for release into the environment.

Chemical Precipitation - an overview | ScienceDirect Topics
Chemical Precipitation - an overview | ScienceDirect Topics

Chemical precipitation, or reagent coagulation precipitates impurities from purified water via change of pH, electrooxidising potential or coprecipitation using precipitating agents (coagulants) such as ferrous or aluminium sulphates (IAEA, 1992).Reagent oxidation is a special case of reagent coagulation in which oxidising reagents (e.g., potassium permanganate or bichromate) are added in ...

HJ 2051-2016 PDF. - Chinese Standard
HJ 2051-2016 PDF. - Chinese Standard

In the process of producing polyvinyl chloride products using ,calcium carbide, acetylene, the ,carbide slag, is separated from the supernatant, including the production Acetylene process, the hydrolysis of ,calcium carbide, generated when the ,wastewater,, the main pollutants are alkali, suspended solids, sulfides, phosphides and so on.

Industrial wastewater treatment - Wikipedia
Industrial wastewater treatment - Wikipedia

Industrial wastewater treatment, describes the processes used for treating ,wastewater, that is produced by industries as an undesirable by-product. After treatment, the treated industrial ,wastewater, (or effluent) may be reused or released to a sanitary sewer or to a surface water in the environment.. Most industries produce some ,wastewater,.Recent trends have been to minimize such production or ...

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