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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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oil gas field fracturing flow-back fluids recycling equipment for sale
New trends in removing heavy metals from industrial wastewater
New trends in removing heavy metals from industrial wastewater

1/10/2011, · The ,removal, of lead ,ions, was >99%, while with arsenate ,ions, it was 19%, in both the systems. Modified UF blend membranes based on cellulose acetate (CA) with polyether ketone ( Arthanareeswaran et al., 2007 ), sulfonated polyetherimide (SPEI) Nagendran et al., 2008 , and polycarbonate ( Vijayalakshmi et al., 2008 ) were recently tested for heavy metals ,removal, from water.

Zero Valent Iron Nanoparticle-Loaded Nanobentonite ...
Zero Valent Iron Nanoparticle-Loaded Nanobentonite ...

A zero valent ,iron,-loaded nano-bentonite intercalated carboxymethyl chitosan (nZVI@nBent–CMC) composite was fabricated and characterized by FT-IR, TEM, TEM–EDX, XRD, BET surface area, and zeta potential measurements. The as-fabricated nZVI@nBent–CMC composite exhibited excellent ,removal, efficiency for both anionic Congo red (CR) dye and cationic crystal violet (CV) dye. The maximum ...

Coagulation and Flocculation in Water and Wastewater ...
Coagulation and Flocculation in Water and Wastewater ...

With coagulation for arsenic ,removal,, ,iron, based coagulants are generally more effective than aluminum coagulants. ,Iron, coagulants added to water hydrolyze to form ferric hydroxide with a net positive charge. This net positive charge is a function of pH.

Experimental Design for Removal of Fe(II) and Zn(II) Ions ...
Experimental Design for Removal of Fe(II) and Zn(II) Ions ...

ABSTRACT: This paper investigates the ,removal of iron, and zinc from aqueous solution with dairy ,wastewater, in three different biomasses such as Lactobacillus delbrueckii ssp bulgaricus (Lb-12), Streptococcus thermophillus (STM-7) and a combination of both this bacteria culture (YC-380) and the optimization of ,removal, efficiency using MINITAB program. A full 23 factorial design of experiments …

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 ...

Application of Biosorption for Removal of Heavy Metals ...
Application of Biosorption for Removal of Heavy Metals ...

4/12/2017, · Fresh water accounts for 3% of water resources on the Earth. Human and industrial activities produce and discharge wastes containing heavy metals into the water resources making them unavailable and threatening human health and the ecosystem. Conventional methods for the ,removal, of metal ,ions, such as chemical precipitation and membrane filtration are extremely expensive when …

Removal of Chlorine Ions from Desulfurization Wastewater ...
Removal of Chlorine Ions from Desulfurization Wastewater ...

The ,removal, percentage reached the maximum value at 60 °C. This result shows that the ,removal, percentage of ,ions, increases with the temperature. This finding may be attributed to the physical adsorption at low temperatures and the temperature increase for easy desorption, thereby decreasing the ,removal, percentage.

Removal of heavy metals from wastewater using agricultural ...
Removal of heavy metals from wastewater using agricultural ...

The ,removal, of other metals such as zinc, cobalt, nickel, thallium (Tl), and ,iron, are also of great interest due to their existence in various industrial effluents and their high toxicity. Zinc has effective impacts on several biochemical processes of living tissues, where high concentrations cause several health issues such as skin irritations, stomach nausea, cramps, vomiting, and anemia ( Abbas et al. 2016 ).

Removal of heavy metal ions from wastewaters: A review ...
Removal of heavy metal ions from wastewaters: A review ...

1/3/2011, · In hydroxide precipitation process, the addition of coagulants such as alum, ,iron, salts, and organic polymers can enhance the ,removal, of heavy metals from ,wastewater,. Charerntanyarak (1999) employed chemical coagulation and precipitation by lime to treat synthetic ,wastewater, consisting of Zn, Cd, Mn and Mg at the concentration of 450, 150, 1085 and 3154 mg/L, respectively.

(PDF) Heavy Metals In Water : Presence Removal and Safety
(PDF) Heavy Metals In Water : Presence Removal and Safety

Removal, of heavy metal ,ions, from ,wastewater, by electrocoag ulation with ,iron, and aluminium electrodes with monopolar configurations was in- vestigated by Akbal and Camcı.

Removing Heavy Metals From Wastewater
Removing Heavy Metals From Wastewater

pH - A term used to describe the ,acid,-base characteristics of water, typically measured by a pH meter. Specifically, the concentration of H+ ,ions, in water. Formally, pH is the negative logarithm of the H + concentration, i.e., pH = -log [H+]. The following values indicate the classification of a water: pH < 7 refers to ,acid, …

Adsorption of Lead and Iron from Industrial Wastewater ...
Adsorption of Lead and Iron from Industrial Wastewater ...

The Melon husk activated carbon is more effective for ,removal, of Lead (Pb4+) ,ions, than for ,removal of Iron, (Fe2+) ,ions,. REFERENCES P. C. Emenike, D. O. Omole, B. U. Ngene and I.T. Tenebe (2016), Potentiality of agricultural adsorbent for the sequestering of metal ,ions, from ,wastewater,, Global Journal Environment Science Management, vol. 2, issue 4, pp. 411-442.

Removal of Cr( vi ) from wastewater by a two-step method ...
Removal of Cr( vi ) from wastewater by a two-step method ...

Therefore, by combining oxalic ,acid, and FA, Cr(VI) can be removed from ,wastewater, and its environmental toxicity can be reduced simultaneously. In this study, we investigated a two-step method to eliminate Cr( VI ) from ,wastewater,; in detail, the first step included the reduction of Cr( VI ) to Cr( III ) in the presence of oxalic ,acid,, followed by the adsorption of Cr( III ) onto MFA.

Iron (Fe) and water - Lenntech
Iron (Fe) and water - Lenntech

Iron removal, from water is mostly carried out in drinking water preparation, because mineral water contains high amounts ,of iron ions,. These influence water colour, odour and turbidity. ,Iron, is present in all wastewaters. ,Iron removal, from ,wastewater, may be achieved by oxidation of binary ,iron, to tertiary ,iron,.

Frontiers | A Review of Phosphorus Removal Technologies ...
Frontiers | A Review of Phosphorus Removal Technologies ...

Phosphate ,ions, are reversibly interchanged between the liquid ,wastewater, and the solid ion exchanger, offering simultaneous ,removal, and recovery (Martin et al., 2009). Immobilised particles of a metal cation typically form the polymer exchange base, termed a polymeric ligand exchanger, on to which P-selective nanoparticles (e.g., ferric oxide) are placed ( Zhao and Sengupta, 1998 ).

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