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citric acid

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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citric acid
TSS Water Course Module 11 Waste Neutralization
TSS Water Course Module 11 Waste Neutralization

sulfuric acid,, with a pH of 1-2, is used for regeneration of cation resin and sodium hydroxide, with a pH of 13-14, is used for regeneration of the anion resin. After the regeneration process, the water containing these chemicals must be disposed of. Due to its extreme pH, the ,wastewater, …

Aluminum Anodizer Implements Zero Liquid Discharge ...
Aluminum Anodizer Implements Zero Liquid Discharge ...

The more acidic waste streams were collected into segregated ,acid, streams (SAS) and nonacid streams (NAS). The SAS stream contained ,sulfuric acid, content from 1.5 to 2 percent. Dilute acids and alkaline streams were directed to the NAS system. The SAS ,wastewater, was neutralized with lime to a …

Biological Wastewater TreatmentZero Liquid Discharge ...
Biological Wastewater TreatmentZero Liquid Discharge ...

The above result is obtained by dosing of ,sulfuric acid, or hydrochloric ,acid, , but the use both of them shows as consequence the increase of conductivity as well as of dissolved solids since these strong minerai acids are releasing into the water their saline components (i.e. sulfates and chlorides) The liquid carbon dioxide (CO2) could be used as alternative to strong acids use; by dissolving ...

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

High-arsenicwaste ,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. It was produced from the water-

Case Study for Groundwater Treatment Hydrogen Sulf | USP ...
Case Study for Groundwater Treatment Hydrogen Sulf | USP ...

The process water flows from Tank 1 to Tank 2 by gravity flow. Between Tank I and Tank 2 ,sulfuric acid, is added to lower the pH to approximately 4.0. The pH is lowered to redissolve the solids that precipitate out of solution at pH 9.2. The ,sulfuric acid, is mixed by a mechanical agitator in the front end of Tank 2.

Summary of Criminal Prosecutions | Enforcement | US EPA
Summary of Criminal Prosecutions | Enforcement | US EPA

Davis Wire uses ,sulfuric acid, in the manufacturing process, and is required to neutralize the ,acid, with a ,wastewater, treatment system before sending it to the public sewer. However, throughout the months of February, March, April and May 2008, inspectors recorded …

Industrial waste water treatment - SlideShare
Industrial waste water treatment - SlideShare

• 2.1.1.2 Chemical Oxygen Demand (COD) • It oxidizes organic matter through a reaction with a mixture of chromic and ,sulfuric acid, at high temperatures. • The COD of ,wastewater, is, in general, higher than that of the BOD5 because more compounds can be chemically oxidized than can be biologically oxidized. • This can be very useful because COD can be determined in 3 hours, compared with ...

TREATMENT OF PHOSPHATE FERTILIZER PLANT WASTE WATER …
TREATMENT OF PHOSPHATE FERTILIZER PLANT WASTE WATER …

returned to the ,plant, for reuse and recovery of ,acid, values. Normally an active processing ,plant, is operated with negative water balance due to the exothermic reaction of the phosphate ore with the ,sulfuric acid,. The excess heat induces evaporation of the pond water.

Aluminum Anodizer Implements Zero Liquid Discharge ...
Aluminum Anodizer Implements Zero Liquid Discharge ...

The more acidic waste streams were collected into segregated ,acid, streams (SAS) and nonacid streams (NAS). The SAS stream contained ,sulfuric acid, content from 1.5 to 2 percent. Dilute acids and alkaline streams were directed to the NAS system. The SAS ,wastewater, was neutralized with lime to a …

Supplement - Veolia
Supplement - Veolia

Sulfuric acid, discharge recove-red as gypsum: a step towards industrial ecology Specializing in the production of titanium-based compounds, used in particular to manufacture paints and surface coatings, the Millennium Chemicals ,plant,, loca-ted in Le Havre, generates 700 m3/hour of ,acid wastewater, (,sulfuric acid, …

ISO/DIS 22447(en) Industrial wastewater classification
ISO/DIS 22447(en) Industrial wastewater classification

The industrial wastewater classification system described in this Standard covers the, basic, and, most important information required to properly characterize industrial process waste-streams to quickly determine the requirement of the appropriate treatment or reuse technology options for specific industries,,, reduce operating, costs for enterprises, and ultimately promote the systematic …

Supplement - Veolia
Supplement - Veolia

Sulfuric acid, discharge recove-red as gypsum: a step towards industrial ecology Specializing in the production of titanium-based compounds, used in particular to manufacture paints and surface coatings, the Millennium Chemicals ,plant,, loca-ted in Le Havre, generates 700 m3/hour of ,acid wastewater, (,sulfuric acid, …

Sulfuric acid history | ML2R consultancy
Sulfuric acid history | ML2R consultancy

Sulphuric ,acid, (American English: ,Sulfuric,), H 2 SO 4, is a strong mineral ,acid,.It can form any concentration in water. The old name for sulphuric ,acid, is oil of vitriol. When high concentrations of SO 3 are added when making the ,acid,, a solution of SO 3 in H 2 SO 4 results. This is called fuming sulphuric ,acid, or Oleum or Nordhausen ,acid,.

Wastewater Treatment Challenges from an Ethanol Plant ...
Wastewater Treatment Challenges from an Ethanol Plant ...

approximately every 2.5 days, so the regeneration ,wastewater, treatment system operates on a batch type process. Before treating the waste, the contents of the tank are mixed by a recirculation pump to equalize the various flow streams. The tank is then pumped down at a continuous 25 gpm flow which is neutralized by ,sulfuric acid, injection.

TREATMENT OF PHOSPHATE FERTILIZER PLANT WASTE WATER …
TREATMENT OF PHOSPHATE FERTILIZER PLANT WASTE WATER …

returned to the ,plant, for reuse and recovery of ,acid, values. Normally an active processing ,plant, is operated with negative water balance due to the exothermic reaction of the phosphate ore with the ,sulfuric acid,. The excess heat induces evaporation of the pond water.

Resource utilization of pickling wastewater (waste acid)
Resource utilization of pickling wastewater (waste acid)

The ,acid, pickling ,wastewater, (waste ,acid,) produced by steel rolling, metal surface treatment and heat treatment industry is mainly hydrochloric ,acid wastewater, and ,sulfuric acid wastewater,. The impurities in the waste ,acid, are mainly Fe2 +, Fe3 +, and a small amount of zinc, copper and other heavy metal ions.

Process engineering: Wastewater treatment plant goes the ...
Process engineering: Wastewater treatment plant goes the ...

17/5/2005, · ,Process engineering: Wastewater treatment plant goes, the distance. ... phosphate rock reacts with ,sulfuric acid, and forms calcium sulfate, or gypsum, ... issued a permit allowing fully treated ,wastewater, to be ,discharged, 100 miles offshore into the Gulf of Mexico.

Biological Wastewater TreatmentZero Liquid Discharge ...
Biological Wastewater TreatmentZero Liquid Discharge ...

The above result is obtained by dosing of ,sulfuric acid, or hydrochloric ,acid, , but the use both of them shows as consequence the increase of conductivity as well as of dissolved solids since these strong minerai acids are releasing into the water their saline components (i.e. sulfates and chlorides) The liquid carbon dioxide (CO2) could be used as alternative to strong acids use; by dissolving ...

Current situation and issues of Industrial Wastewater ...
Current situation and issues of Industrial Wastewater ...

Total Dissolved Solids or TDS. ・キNot over 3,000 mg/l for discharge in to general water body. ・キNot over 5,000 + TDS of receiving water body mg/l for discharge in to water body that has TDS of more than 3,000 mg/l Pass through Glass Fiber Filter Disk and evaporate at 1800C for at least 1 hour 5.

Unknown Exposures are Potential Liabilities for Wastewater ...
Unknown Exposures are Potential Liabilities for Wastewater ...

as ,wastewater, treatment plants. Nevertheless, ,wastewater, treatment plants do face environmental exposures from their operations, with potential resulting liabilities. As an example, consider the case of a ,wastewater, treatment ,plant, that utilized ,sulfuric acid, in its process. The ,acid, was stored on-site in a 20,000-gallon aboveground storage tank.

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