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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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hazardous liquid waste disposal cost
Modifications of polyethersulfone membrane by doping ...
Modifications of polyethersulfone membrane by doping ...

sulfuric acid,, the sulfated Y-doped zirconia nanoparticles were obtained. The fouling behavior of composite membranes was tested by ltering oily ,wastewater,. The optimum dosage of this nanomaterial was reported as 15 wt% to achieve lowest fouling rate. In other work,23 the TiO 2 was rstly deposited on the surface of SiO

Fluoride Removal from Industrial Wastewater
Fluoride Removal from Industrial Wastewater

Fluorides can be removed from industrial wastewater streams, depending on their form using one of many different methods including: Fluoride reduction via activated, alumina, (only effective at very low levels of free fluoride and typically used for drinking water only).

8 Strongest Acids Ever Known To Us - RankRed
8 Strongest Acids Ever Known To Us - RankRed

29/1/2020, · It is essential for multiple industries like agriculture, ,wastewater, treatment, and oil refining. ,Sulfuric acid, is also used in battery acids and cleaning agents. It also has a vital role in the study of acids as a whole. ,Sulfuric acid, serves as a base reference to compare the ,acidity, levels of superacids or acids. While there are several ...

A Novel Recovery Method for Treating Wastewater Containing ...
A Novel Recovery Method for Treating Wastewater Containing ...

A new treatment method for wastewater containing concentrated fluoride and fluoroborate ions by, hydrothermal, treatment were developed. The treatment is an earth-mimetic method to produce natural...

A Novel Recovery Method for Treating Wastewater Containing ...
A Novel Recovery Method for Treating Wastewater Containing ...

A new treatment method for wastewater containing concentrated fluoride and fluoroborate ions by hydrothermal treatment were developed. The treatment is an earth-mimetic method to produce natural minerals by hydrothermal treatment with Ca (OH) 2 as a mineralizer.

Combined treatment of polishing wastewater and fluoride ...
Combined treatment of polishing wastewater and fluoride ...

5/9/2009, · ,Wastewater, from semiconductor manufacturing is usually separated in three different streams; acid–base, chemical mechanical polishing (CMP), and, fluoride-containing wastewater, . Typical amount of, fluoride-containing wastewater, generated for an 8-in. semiconductor fabrication facility ranges from 350 to 700 m 3 /d with, fluoride concentration, varying from 50 to 1000 mg/L [2] .

Heritage Systems Inc. | Solutions for Wastewater | pH ...
Heritage Systems Inc. | Solutions for Wastewater | pH ...

pH adjustment strategies, ofered by ,Heritage Systems, are effective in conditioning ,wastewater, and in improving the performance of treatment systems while minimizing the impact on the environment. Available pH adjustment chemistries include potassium hydroxide, sodium hydroxide, magnesium hydroxide, aqueous ammonia, ,sulfuric acid, and hydrochloric ,acid,.

Strength of Solid Acids and Acids in Solution. Enhancement ...
Strength of Solid Acids and Acids in Solution. Enhancement ...

10/12/1997, · It was found that Nafion-H is similar in strength to 85% ,sulfuric acid,, whereas Ambelyst 15 is much weaker than 80% methanesulfonic ,acid, or 60% ,sulfuric acid,. Thus, the solids are much weaker acids than their liquid structural analogs.

Treatment of acidic wastewater via fluoride ions removal ...
Treatment of acidic wastewater via fluoride ions removal ...

15/11/2020, · A new process for the treatment of, phosphoric acid, industry, wastewater, is proposed. The technique comprises the following major steps: (1) selective removal of, fluoride, ions via reaction/adsorption with SiO 2 -containing particles; (2) microfiltration; and (3) flow electrode capacitive deionization (FCDI) for selective separation of ,phosphate, ions.

Method of fluoride-containing wastewater treatment ...
Method of fluoride-containing wastewater treatment ...

A method of ,fluoride,-,containing wastewater treatment,, comprising: performing a primary fluoric ion concentration detection process upon ,wastewater,, the primary fluoric ion concentration detection process comprising: providing a buffer solution having a stable pH value; adding a fixed amount of the ,wastewater, into the buffer solution; detecting a fluoric ion concentration in the buffer solution ...

Semiconductor Wastewater Treatment - Ovivo
Semiconductor Wastewater Treatment - Ovivo

Fluoride, discharge limit >10 ppm. Some examples of Ovivo ,semiconductor wastewater treatment, solutions: ,Treatment, of CMP and Backgrind Water. CMP is an essential process in semiconductor fabrication. The resultant ,wastewater, can be treated by flocculation and sedimentation to …

Acid Fluoride-containing Wastewater Treatment Project in ...
Acid Fluoride-containing Wastewater Treatment Project in ...

The reconstruction project of ,acid fluoride,-,containing wastewater treatment, in rare earths refinery was introduced. The ,wastewater, was characterized by complex composition, strong acidity, and high content of ,fluoride, with contents of many kinds of heavy metal ion. In the pretreatment process, natural limestone was used for neutralization and precipitation, and then the lime cream and PAM were ...

Combined treatment of polishing wastewater and fluoride ...
Combined treatment of polishing wastewater and fluoride ...

5/9/2009, · Wastewater from semiconductor manufacturing is usually separated in three different streams; acid–base, chemical mechanical polishing (CMP), and fluoride-containing wastewater . Typical amount of fluoride-containing wastewater generated for an 8-in. semiconductor fabrication facility ranges from 350 to 700 m 3 /d with fluoride concentration varying from 50 to 1000 mg/L [2] .

L 10 neutralization - SlideShare
L 10 neutralization - SlideShare

Sulfuric Acid, Treatment for Alkaline WastesWastesWastesWastes The addition ,of sulfuric acid, to alkaline wastes is a fairly common, but expensive, means of neutralization. Storage and feeding equipmentStorage and feeding equipment requirements are low as result of its great ,acidity,, but it is difficult to handle because of its corrosiveness.

CN103159342B - Hydrofluoric acid wastewater treatment ...
CN103159342B - Hydrofluoric acid wastewater treatment ...

The invention relates to a hydrofluoric acid wastewater treatment method for treating wastewater after etching glass substrates. According to the invention, acid, calcium salt and calcium hydroxide...

Collecting and Preserving Waste and Wastewater Samples for ...
Collecting and Preserving Waste and Wastewater Samples for ...

2 milliliters ,sulfuric acid, per liter: 7 days: Ortho phosphate: 40 milligrams mercuric chloride per liter or 2 milliliters ,sulfuric acid, per liter: 7 days: Total Kjeldahl nitrogen: 4 degrees Celsius and 0.8 milliliter ,sulfuric acid, per liter: unstable: Nitrate (NO 3-) 0.8 milliliter ,sulfuric acid, per liter: 7 …

Remover of fluoride ion and treatment method for ...
Remover of fluoride ion and treatment method for ...

The present invention's removing agent for dissolved fluoride ion and treatment method for wastewater containing fluoride using the same can remove fluoride ion below 10 ppm easily and with low cost, can have the whole of the sludge generated from the treatment process reusable, can greatly reduce the time necessary for wastewater treatment by simplifying the conventional treatment process for wastewater …

Reuse of wastewater from phosphate fertilizer factories ...
Reuse of wastewater from phosphate fertilizer factories ...

Industrial ,wastewater, The industrial ,wastewater, (acidic water) was obtained from Manquebad Superphosphate Fertilizer Factory (Egyptian Financial and Industrial Co. JSC (EFIC), Manquebad, Assiut, Upper-Egypt). This acidic water is the residues water proceeded from producing sulphuric ,acid, and its general characteristics include:

Wastewater treatment for semiconductor production
Wastewater treatment for semiconductor production

The waste water is treated by precipitation and flocculation. The fluoride contained is precipitated as calcium fluoride by the addition of lime milk or calcium chloride. This process step produces calcium fluoride sludge, which is dewatered and disposed of. CMP waste water treatment for …

Fluoride Wastewater Treatment by Adsorption onto ...
Fluoride Wastewater Treatment by Adsorption onto ...

Data were evaluated with the aim of developing an alternative ,treatment, technology for washing ,wastewater, arising from an Aluminum can production plant. Kinetics and adsorption isotherms data have been also produced Sorption is greatly affected by pH and the best condition for ,fluoride, removal are obtained at pH 5–6 and alkalinity competes successfully with ,fluoride, ions for the exchange sites.

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