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Oil gas field fracturing flow-back fluids discharge

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 discharge
POLYVINYL ALCOHOL (PVA)
POLYVINYL ALCOHOL (PVA)

Polyvinyl alcohol, for food use is an odourless and tasteless, translucent, white or cream colored granular powder. It is soluble in water, slightly soluble in ethanol, but insoluble in other organic solvents. Typically a 5% solution of ,polyvinyl alcohol, exhibits a pH in the range of 5.0 to 6.5. ,Polyvinyl alcohol, has a melting point of 180 to 190°C.

Reactive toughening of polyvinyl alcohol hydrogel and its ...
Reactive toughening of polyvinyl alcohol hydrogel and its ...

In order to improve the hydraulic impact resistance of a polyvinyl alcohol (PVA) hydrogel as a microorganism immobilization material and meet the requirements of long-time aeration of sewage treatment, toughened PVA hydrogel beads were prepared by co-crosslinking with glycerol through the boric acid (H 3 BO 3) – chemical crosslinking method.

Nano/submicrometer-emulsion oily wastewater treatment ...
Nano/submicrometer-emulsion oily wastewater treatment ...

The above results indicate that wood-,PVA, is tolerant enough for a wide pH range. The purification performance of wood-,PVA,-CNT toward ,acid,-base-corrosion oily water was further investigated. Tween 80-stabilized silicone oil-in-water nano/submicrometer emulsions with different pH values were considered as examples.

Capturing Cd2+ ions from wastewater using PVA/[small alpha ...
Capturing Cd2+ ions from wastewater using PVA/[small alpha ...

Capturing Cd2+ ions from ,wastewater, using ,PVA,/[small alpha]-MnO2-Oleic ,acid, nanocomposites. ... nanocomposites (,PVA, NCs) filled with modified α-MnO2 nanorods (NRs) were fabricated through the sonochemical method, which is a fast, economical, and eco-friendly method. ... oleic ,acid, ; nanorods ...

Degradation of polyvinyl alcohol in aqueous solutions ...
Degradation of polyvinyl alcohol in aqueous solutions ...

wastewater contaminated with PVA. This investigation was conducted in Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan, Taiwan, during 2010–2011. Materials and methods PVA with a molecular weight of 22,000 was obtained from Showa. Sodium persulfate (Na 2S 2O 8, 99 %) was obtained from Sigma. HNO

Improvement of biodegradability of PVA-containing ...
Improvement of biodegradability of PVA-containing ...

Read "Improvement of biodegradability of ,PVA,-containing ,wastewater, by ionizing radiation pretreatment, Environmental Science and Pollution Research" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

Removal of nitrogen in wastewater by polyvinyl alcohol ...
Removal of nitrogen in wastewater by polyvinyl alcohol ...

Removal of nitrogen in ,wastewater, by ,polyvinyl alcohol, (,PVA,)-immobilization ... were hardened in the solution of boric ,acid, and 1% calcium chloride. The subsequent spherical beads in 3-7mm diameter were washed with distilled water, and adapted with a synthetic ,wastewater, before

Cell immobilization using PVA crosslinked with boric acid ...
Cell immobilization using PVA crosslinked with boric acid ...

Abstract. A new cell immobilization technique is described in which ,polyvinyl alcohol, is crosslinked with boric ,acid,, with the addition of a small amount of calcium alginate. The presence of the calcium alginate improves the surface properties of the beads, preventing agglomeration. A pure culture of phenol‐degrading Pseudomonas was immobilized in ...

Improvement of biodegradability of PVA-containing ...
Improvement of biodegradability of PVA-containing ...

Read "Improvement of biodegradability of ,PVA,-containing ,wastewater, by ionizing radiation pretreatment, Environmental Science and Pollution Research" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

Adsorption of polyvinyl alcohol from wastewater by ...
Adsorption of polyvinyl alcohol from wastewater by ...

Polyvinyl alcohol (PVA), a sizing agent used in the tex-tile and printing industry, was the main pollutant in industrial wastewater. Three main processes, Fenton oxi-dation process (Lin & Lo ; Hachem et al. ; Georgiou et al. ; Baban et al. ; Selcuk et al. ),

Adsorption of polyvinyl alcohol from wastewater by ...
Adsorption of polyvinyl alcohol from wastewater by ...

Polyvinyl alcohol (PVA), a sizing agent used in the tex-tile and printing industry, was the main pollutant in industrial wastewater. Three main processes, Fenton oxi-dation process (Lin & Lo ; Hachem et al. ; Georgiou et al. ; Baban et al. ; Selcuk et al. ),

Adsorption of Dyes Using Poly(vinyl alcohol) (PVA) and PVA ...
Adsorption of Dyes Using Poly(vinyl alcohol) (PVA) and PVA ...

5/2/2020, · The study on the unmodified PVA as an adsorbent for methylene blue dye from wastewater has been carried out at 303–333 K by Umoren et al. The results revealed that the maximum adsorption capacity of PVA was 13.80 mg/g at 303 K.

Synthesis of Modified Starch/Polyvinyl Alcohol Composite ...
Synthesis of Modified Starch/Polyvinyl Alcohol Composite ...

Typical textile printing and dyeing wastewater usually contains dyes, polyvinyl alcohol (PVA), starch, and so on [ 1, 2 ]. Some dyes may be further degraded into toxic and carcinogenic substances, which will affect human health [ 3 ]. The efficient and complete removal of dyes from effluents is necessary.

Facile Preparation of Tannic Acid–Poly(vinyl alcohol ...
Facile Preparation of Tannic Acid–Poly(vinyl alcohol ...

mixed solution of PVA and sodium alginate (SA) to form TA− PVA/SA hydrogel beads, which can be utilized to purify the MB dye from sewage. TA can increase the adsorption capacity and thermal stability. The reaction between SA and CaCl 2 can form a shell of hydrogel beads, and the cross-linking of boric

Removal of nitrogen in wastewater by polyvinyl alcohol ...
Removal of nitrogen in wastewater by polyvinyl alcohol ...

Removal of nitrogen in ,wastewater, by ,polyvinyl alcohol, (,PVA,)-immobilization ... were hardened in the solution of boric ,acid, and 1% calcium chloride. The subsequent spherical beads in 3-7mm diameter were washed with distilled water, and adapted with a synthetic ,wastewater, before

PVA-PAA HYDROGEL MICRO-CARRIER FOR THE IMPROVEMENT …
PVA-PAA HYDROGEL MICRO-CARRIER FOR THE IMPROVEMENT …

experiments the ,PVA,-PAA hydrogel synthesized with embedded starch granules was most suitable for the ,wastewater, technology requirements. ,PVA,-PAA hydrogel micro-carriers with an average diameter of 150-400 µm were tested in laboratory scale ,wastewater, technology experiments. The bacterial culture was colonized on the surface

Synthesis of Modified Starch/Polyvinyl Alcohol Composite ...
Synthesis of Modified Starch/Polyvinyl Alcohol Composite ...

Typical textile printing and dyeing wastewater usually contains dyes, polyvinyl alcohol (PVA), starch, and so on [ 1, 2 ]. Some dyes may be further degraded into toxic and carcinogenic substances, which will affect human health [ 3 ]. The efficient and complete removal of dyes from effluents is necessary.

Synthesis of Modified Starch/Polyvinyl Alcohol Composite ...
Synthesis of Modified Starch/Polyvinyl Alcohol Composite ...

Typical textile printing and dyeing wastewater usually contains dyes, polyvinyl alcohol (PVA), starch, and so on [ 1, 2 ]. Some dyes may be further degraded into toxic and carcinogenic substances, which will affect human health [ 3 ]. The efficient and complete removal of dyes from effluents is necessary.

POLYVINYL ALCOHOL (PVA)
POLYVINYL ALCOHOL (PVA)

Polyvinyl alcohol for food use is an odourless and tasteless, translucent, white or cream colored granular powder. It is soluble in water, slightly soluble in ethanol, but insoluble in other organic solvents. Typically a 5% solution of polyvinyl alcohol exhibits a pH in the range of 5.0 to 6.5. Polyvinyl alcohol has a melting point of 180 to 190°C.

Synthesis and characterization of Cu(OH) 2 -NWs-PVA-AC ...
Synthesis and characterization of Cu(OH) 2 -NWs-PVA-AC ...

11/3/2021, · From these results, it can be also determined that Cu(OH) 2-NWs-,PVA,-AC composite can be deliberated as the promising adsorbent for the removal of MB from ,wastewater, 50,51,52,53,54,55,56.

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