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Oil Field Supplies

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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Separation of saline oily wastewater by membrane distillation
Separation of saline oily wastewater by membrane distillation

30/1/2020, · The OW2 ,wastewater,, similarly as OW1 ,wastewater,, also contained the NH 4 + ions and the pH of OW2 ,wastewater, was equal to 8.2, which enables the evolution of ,ammonia, from feed to distillate. The IC studies confirmed that significant amounts of the NH 4 + ions were detected in the obtained distillate, which caused an increase in the electrical conductivity of produced distillate (Fig. 6 ).

ADSORPTION AND NEUTRALIZATION OF ACID WASTEWATER ...
ADSORPTION AND NEUTRALIZATION OF ACID WASTEWATER ...

The process and mechanism of the adsorption and ,neutralization of acidic wastewater containing, Ni(Ⅱ) by steel slag,the solid waste produced from steelmaking industry were studied in detail.The results showed that after 8 min adsorption treatment at(25 ℃),the concentration of Ni(Ⅱ) in ,acidic wastewater, was reduced from the initial(200 mg/L) to(0.25 mg/L) and effluent pH was increased from ...

Continuous Electrocoagulation Treatment of Wastewater from ...
Continuous Electrocoagulation Treatment of Wastewater from ...

Wastewater, from ,Copper, Production ,Chemical, Precipitation Electrocoagulation Jackson Rodriguez*, Srećko Stopić, Bernd Friedrich IME Process Metallurgy and Metal Recycling at RWTH Aachen University, Intzestr. 3, 52056 Aachen, Germany * Contact address: JRodriguez@ime-aachen.de With less than one-tenth of treatment costs compared to NaOH ...

Application of the Flotation Tailings as an Alternative ...
Application of the Flotation Tailings as an Alternative ...

2/1/2020, · Majdanpek (Serbia) were applied for ,neutralization, of the water taken from the extremely ,acidic, Lake Robule (Bor, Serbia). Tests conducted in Erlenmeyer flasks showe d that after ,neutralization, of the lake water to pH 7, over 99% of aluminum (Al), iron (Fe), and ,copper, (Cu) precipitated, as well as 92% of Zn and 98% of Pb.

Zinc and Copper Recovery from Smelter Waste Stream Case Study
Zinc and Copper Recovery from Smelter Waste Stream Case Study

an ,acidic wastewater, stream with a similar ,chemical, nature to the acid mine drainage at the Dexing and Yinshan Mines in Jiangxi Province. The ,acidic, stream contains valuable dissolved metals including ,copper,, zinc, nickel and cobalt. Currently the stream is being neutralized with lime and the

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

chemical, that is required during treatment is dependent on pH and alkalinity of the water. Usually, heavy metals in water are precipitated by adding sodium hydroxide or lime during ,neutralization,. However, the results of this process are far from satisfying in many cases. A …

Process for the catalytic treatment of wastewater ...
Process for the catalytic treatment of wastewater ...

Neutralization, of the ,acidic, gaseous reaction products can prevent corrosion and the eventual destruction of downstream equipment. Any ,neutralization, process known to the art may be used to neutralize the ,acidic, reaction products, including solid scrubbers, liquid scrubbers, or …

Emin Akidil
Emin Akidil

The ,neutralization, system has 4 compartments; 1st compartment is for recovery of precious metals (gold, platinum, palladium) present in waste acid. 2nd compartment recovers the ,copper, in waste acids. The system returns ,copper, in metal form. 3rd compartment is the pH adjustment compartment. It converts acid waters having a pH of 8 into ...

(PDF) Neutralization of an extremely acidic sludge and ...
(PDF) Neutralization of an extremely acidic sludge and ...

The The general experimental flow sheet is given in Fig. 2. sludge is a black, homogeneous organic matter with high The ,acidic, sludge was mixed with the fly ash under different viscosity and strong acidity with an apparent pH of 1.2 operational conditions, such as FA/PAZ and W/PAZ requiring 19.1 equivalents of NaOH for ,neutralization, ratios.

HJ 2056-2018 PDF. - Chinese Standard
HJ 2056-2018 PDF. - Chinese Standard

6.2.5 Vulcanization method and membrane separation method are suitable for treating ,acidic wastewater containing copper, concentration above 80mg/L for recovery of valuable metals; In order to ensure that the effluent is up to standard, it is generally required to be combined with the lime ,neutralization, method and the HDS method.

Remediation and Selective Recovery of Metals from Acidic ...
Remediation and Selective Recovery of Metals from Acidic ...

7/10/2014, · Mine waters are widely regarded as environmental pollutants, but are also potential sources of valuable metals. Water draining the Maurliden mine (Sweden) is highly ,acidic, (pH 2.3) and rich in zinc (∼460 mg L–1) and iron (∼400 mg L–1), and contains smaller concentrations (0.3–49 mg L–1) of other transition metals and arsenic.

Wastewater treatment by membrane distillation - ScienceDirect
Wastewater treatment by membrane distillation - ScienceDirect

1/1/2020, · Membrane ,distillation, (MD) has been around since the 1960s but only recently it has been widely studied, mainly for desalination. Its application in ,wastewater, treatment is emerging more and more, but despite its great potential for the realization of zero-liquid-discharge systems, many advances are still needed for its acceptance by industrial ...

14 Industrial Wastewater Treatment Principals and Ideas
14 Industrial Wastewater Treatment Principals and Ideas

The ,neutralization, method adjusts the pH value of the ,wastewater,; the coagulation sedimentation or flotation method can remove the suspended solids in the ,wastewater,; the ,chemical, precipitation method can decolorize; the biological treatment method can remove the BOD, and is effective for the kraft paper ,wastewater,; the wet oxidation treatment of the sulfite pulp ,wastewater, success.

Application of the electrocoagulation technique for ...
Application of the electrocoagulation technique for ...

Application of the electrocoagulation technique for treating heavy metals ,containing wastewater, from the pickling process of a billet plant 855 Korean J. Chem. Eng.(Vol. 27, No. 3) by using an aluminum electrode in the pH range between 4 and 8, whereas by using a iron electrode, ,wastewater, with an initial pH of

Chemical Stability of Acid Rock Drainage Treatment Sludge ...
Chemical Stability of Acid Rock Drainage Treatment Sludge ...

the final pH of the leachate. A higher ,neutralization, potential (e.g., a greater content of unreacted neutralizing agent) makes sludges inherently more chemically stable. Thus, when ARD or any ,acidic, metalliferous ,wastewater, is treated, a choice must be made between efficient reagent use and resistance to acid attack. Introduction

14 Industrial Wastewater Treatment Principals and Ideas
14 Industrial Wastewater Treatment Principals and Ideas

The ,neutralization, method adjusts the pH value of the ,wastewater,; the coagulation sedimentation or flotation method can remove the suspended solids in the ,wastewater,; the ,chemical, precipitation method can decolorize; the biological treatment method can remove the BOD, and is effective for the kraft paper ,wastewater,; the wet oxidation treatment of the sulfite pulp ,wastewater, success.

Calcined Mg/Al-LDH for acidic wastewater treatment ...
Calcined Mg/Al-LDH for acidic wastewater treatment ...

strong ,acidic, nature of the solution. Our results, for the first time, showed that Mg/Al-CLDH is particularly suitable for the treatment of AD ,containing, various contaminants. 1. Introduction Acid drainage (AD) from mine and some industrial manufactories (e.g., batteries, tanneries, electrical, and …

Chemical Stability of Acid Rock Drainage Treatment Sludge ...
Chemical Stability of Acid Rock Drainage Treatment Sludge ...

the final pH of the leachate. A higher ,neutralization, potential (e.g., a greater content of unreacted neutralizing agent) makes sludges inherently more chemically stable. Thus, when ARD or any ,acidic, metalliferous ,wastewater, is treated, a choice must be made between efficient reagent use and resistance to acid attack. Introduction

Adsorption of the copper ion by Phoenix sylvestris leaves
Adsorption of the copper ion by Phoenix sylvestris leaves

Journal of ,Chemical, and Pharmaceutical Research, 2016, 8(3):155-164 ... treat ,wastewater containing, different classes of metal ions recognizing the economic drawback of commercial ... 9 and 10. The ,acidic, and alkaline pH of the media was maintained by adding the required amounts of 0.1 ml/L hydrochloric acid and sodium hydroxide solutions.

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