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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
Reduction Monitoring in the Chromium Wastewater Treatment ...
Reduction Monitoring in the Chromium Wastewater Treatment ...

Introduction. ,Wastewater, from electroplating facilities and certain types of chemical plants contains toxic forms of hexavalent chromium such as chromate and ,dichromate,. The hexavalent chromium in this ,wastewater, must be reduced before the water can be discharged. This requires a two-step process: hexavalent chromium (CR 6) is reduced to trivalent ...

Removal of Heavy Metal Ions from Industrial Wastewater by ...
Removal of Heavy Metal Ions from Industrial Wastewater by ...

concentrations of heavy ,metal ions from industrial wastewater, samples, adjusted to decrease (pH) with Nitric ,acid,. Then was added 50 mL ,industrial wastewater, which had six heavy metal ions (Ni. 2+, Pb , Zn , Cd. 2+, Fe. 3+, and Cr. 3+) To facilitate extraction of the heavy metal ions. Stirring: vigorous shaking was applied for 10 min as contact time. The

Removal of chromium(vi) from polluted wastewater by ...
Removal of chromium(vi) from polluted wastewater by ...

potassium ,dichromate, (K 2Cr 2O 7) were purchased from Sigma. Toluene(99.8%)waspurchasedfromSigma-Aldrich.Astandard Cr(VI) metal ion solution was freshly prepared daily. Adjustment of the pH of the ,industrial wastewater, and aqueous solutions was carried out using dilute NaOH and HNO 3 solutions. All the

(PDF) Studies on removal of formaldehyde from industrial ...
(PDF) Studies on removal of formaldehyde from industrial ...

The results showed that the maximum percentage ,removal, of Cd and Sn in the electroplating ,industrial wastewater, was obtained at the temperature of 50 °C, agitation speed of 100 rpm and contact ...

Chemical Industry Wastewater Treatment Using Adsorption
Chemical Industry Wastewater Treatment Using Adsorption

measured parameter for ,industrial wastewater, studies and for control of ,wastewater, treatment processes. The ,dichromate, reflux method was used for the COD determination because it has advantages over other oxidants in oxidizability, applicability to a wide variety of samples and ease of manipulation. The

Removal of chromium( vi ) from polluted wastewater by ...
Removal of chromium( vi ) from polluted wastewater by ...

The effect of Cr(VI) concentration on adsorption was investigated using a batch method for potassium ,dichromate, (K 2 Cr 2 O 7) solution and ,industrial wastewater, at 25 ± 1 °C. For these adsorption measurements, 0.05 g of the Si-CPTS-AHAP adsorbent was suspended in 10 mL of aqueous solution containing different amounts of potassium ,dichromate, (K 2 Cr 2 O 7 ) solution and ,industrial wastewater,.

Removal of heavy metal from industrial wastewater using ...
Removal of heavy metal from industrial wastewater using ...

Removal, of heavy metal from ,industrial wastewater, using chitosan coated oil palm shell charcoal. Saifuddin M. Nomanbhay * Chemistry Unit, Department of Engineering Sciences College of Engineering Universiti of Tenaga Nasional 43900 Kajang Selangor, Malaysia Tel: 60389287285 Fax: 60389212116 E-mail: saifuddin@uniten.edu.my. Kumaran Palanisamy

Removal of Chromium from Industrial Wastewater by ...
Removal of Chromium from Industrial Wastewater by ...

In this study, the adsorption potential of activated carbon for the ,removal, of Cr (VI) ions from ,industrial wastewater, has been investigated. The adsorption of hexavalent chromium from aqueous solution by coffee husk activated carbon prepared by chemical method and its application to real ,wastewater, was studied. The extent of adsorption was

Chromate removal from aqueous wastes by reduction with ...
Chromate removal from aqueous wastes by reduction with ...

Influences of Humic ,Acid, on Cr(VI) ,Removal, by Zero-Valent Iron From Groundwater with Various Constituents: Implication for Long-Term PRB Performance. Water, Air, & Soil Pollution 2011, 216 (1-4) , 473-483. https://doi.org/10.1007/s11270-010-0546-2; Xiaohong Guan, Haoran Dong, Jun Ma, Irene M.C. Lo.

Usage of in situ exopolysaccharide‐forming lactic acid ...
Usage of in situ exopolysaccharide‐forming lactic acid ...

While in situ EPS‐forming lactic ,acid bacteria, (LAB) have been widely used in dairy and cereal applications, their application to meat products constitutes a new, more rarely studied approach. Enhancing water binding capacity or reducing fat content though is an interesting possible use that could benefit a variety of meat products such as, for example, cooked ham or spreadable raw fermented ...

Removal of Hexavalent Chromium in Industrial Wastewater ...
Removal of Hexavalent Chromium in Industrial Wastewater ...

After ,removal, by the adsorbent, the trace Cr(VI) remaining in the ,industrial wastewater, sample was carried out by FAAS, which showed satisfactory results. These results provide a basis for further application of functionalized MNPs to remove chromium from surface and ground water resources polluted by ,industrial, activities such as the preservation of wood, textile dying, leather tanning, …

Do You Need to Remove Chromium from Your Industrial Water ...
Do You Need to Remove Chromium from Your Industrial Water ...

As such, the most important reason to treat ,wastewater, for chromium is to protect public health and safety, although there are also other reasons to consider chromium ,removal, as part of an overall ,wastewater, treatment strategy. We’ll address these in more detail below: Compliance with ,wastewater, discharge permit limitations

Sustainability | Free Full-Text | Effects of Lighter Dose ...
Sustainability | Free Full-Text | Effects of Lighter Dose ...

Oxytetracycline (OTC) is a commonly used antibiotic in livestock farming for controlling intestinal and respiratory infections in farm animals. However, the absorption of antibiotics by animals is limited, and most antibiotics are excreted in the original form with manure, which will have an impact on the environment. The removal of antibiotics from swine manure could generally be performed ...

Removal of Heavy Metal Ions from Industrial Wastewater by ...
Removal of Heavy Metal Ions from Industrial Wastewater by ...

concentrations of heavy metal ions ,from industrial wastewater, samples, adjusted to decrease (pH) with Nitric ,acid,. Then was added 50 mL ,industrial wastewater, which had six heavy metal ions (Ni. 2+, Pb , Zn , Cd. 2+, Fe. 3+, and Cr. 3+) To facilitate extraction of the heavy metal ions. Stirring: vigorous shaking was applied for 10 min as contact time. The

Chemical Industry Wastewater Treatment Using Adsorption
Chemical Industry Wastewater Treatment Using Adsorption

measured parameter for ,industrial wastewater, studies and for control of ,wastewater, treatment processes. The ,dichromate, reflux method was used for the COD determination because it has advantages over other oxidants in oxidizability, applicability to a wide variety of samples and ease of manipulation. The

Adsorption Treatment of Industrial Paint Effluent for the ...
Adsorption Treatment of Industrial Paint Effluent for the ...

a potential adsorbent for the ,removal, of pollutants from ,industrial, paint effluent. ... important process in ,wastewater, treatment. ... alkaliiodide ,acid,, phenolphthalein, potassium ,dichromate,, mercuric - sulphate solution were used without further purification.

Adsorption Treatment of Industrial Paint Effluent for the ...
Adsorption Treatment of Industrial Paint Effluent for the ...

a potential adsorbent for the ,removal, of pollutants from ,industrial, paint effluent. ... important process in ,wastewater, treatment. ... alkaliiodide ,acid,, phenolphthalein, potassium ,dichromate,, mercuric - sulphate solution were used without further purification.

Use of Rhodopseudomonas palustris P1 stimulated growth by ...
Use of Rhodopseudomonas palustris P1 stimulated growth by ...

14/11/2013, · Latex rubber sheet ,wastewater, (non sterile ,wastewater,: RAW) was treated efficiently using a stimulated Rhodopseudomonas palustris P1 inoculum with ,added, fermented pineapple extract (FPE) under microaerobic light conditions. Optimization of ,wastewater, treatment conditions using a central composite design (CCD) found that a 3 % stimulated P1 inoculum with 0.9 % ,added, FPE and a 4-day …

Removal of organic pollutants from industrial wastewater ...
Removal of organic pollutants from industrial wastewater ...

1/5/2017, · A sample was diluted 30 times by addition of distilled water, 2.5 ml of sample was taken into a glass test tube (HACH, company for sales instruments), then two reagents of potassium, dichromate, (1.5 ml) and sulfuric acid (3.5 ml) were added, the sample was digested into COD reactor (HACH, USA) for 2 h at 150 °C, Then, it was cooled for 30 min and measured by COD meter to detect the, removal, efficiency …

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