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What qualifications are needed for fracturing flowback fluid

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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What qualifications are needed for fracturing flowback fluid
Pretreatment of polyvinyl alcohol by electrocoagulation ...
Pretreatment of polyvinyl alcohol by electrocoagulation ...

This is because the hydrogen produced is dominant ,under acidic conditions,. The oxygen generated ,under, alkaline ,conditions, is dominant. But the change of pH has little effect on the removal efficiency ,of PVA,. From the scientific and economic point of view, the average pH of 7 is the optimum condition for the ,treatment of PVA, by EC.

Adsorption of Congo red from solution by iron doped PVA ...
Adsorption of Congo red from solution by iron doped PVA ...

Chitosan-,polyvinyl alcohol,-iron (CS-,PVA,-Fe) ... Thus, it can be used for the ,treatment, of dye ,wastewater, from industries (dye and food industries) to ... The traditional CS film breaks down ,under, weakly ,acidic conditions,, which greatly limits its use in ,conditions, with lower pH [25].

Pretreatment of polyvinyl alcohol by electrocoagulation ...
Pretreatment of polyvinyl alcohol by electrocoagulation ...

This is because the hydrogen produced is dominant ,under acidic conditions,. The oxygen generated ,under, alkaline ,conditions, is dominant. But the change of pH has little effect on the removal efficiency ,of PVA,. From the scientific and economic point of view, the average pH of 7 is the optimum condition for the ,treatment of PVA, by EC.

Demonstration of the Coagulation and Diffusion of Homemade ...
Demonstration of the Coagulation and Diffusion of Homemade ...

In our approach, we focused on coagulants used for treating wastewater and wet spinning, which is a manufacturing process for creating fibers. Sodium sulfate is a well-known coagulant for PVA, and it is used in the coagulation bath of PVA before wet spinning …

Study on Rare Earth La-iron and Coke Micro-electrolysis ...
Study on Rare Earth La-iron and Coke Micro-electrolysis ...

Rare earth La-iron and coke system was used for ,PVA wastewater treatment,, and the effect of different reaction systems which contain rare earth La system, La-coke system, Fe-coke system and La-iron and coke system on ,PVA, removal rate ,under, the ,conditions, of p H from 1 to 10, as well as the effect of different reaction systems on ,PVA, removal rate over time ,under acidic conditions, and alkaline ...

Electrospun poly(acrylic acid)/poly(vinyl alcohol ...
Electrospun poly(acrylic acid)/poly(vinyl alcohol ...

The nanofibrous adsorbents were also applied through filtration tests for Cu(II) removal from the ,wastewater under, dynamic flow ,conditions,. 1. Introduction Copper (Cu) is ... groups of PAA and hydroxyl groups ,of PVA, by heat ,treatment,, ... adsorbents ,under, a highly ,acidic, condition due to the competitive effect of hydrogen ...

PVA and CS cross-linking combined with in situ chimeric ...
PVA and CS cross-linking combined with in situ chimeric ...

Polyvinyl alcohol, (,PVA,) is a well-known material that is highly soluble in water, non-toxic, biocompatible, hydrophilic, innocuous and non-carcinogenic. 24,25 ,PVA,, with its abundant hydroxyl groups 26,27 and good chemical resistance, has been used as a hydrophilic additive; however, to render it stable in an aqueous phase, ,PVA, must be cross-linked by another material (e.g., glutaraldehyde ...

Electrospun poly(acrylic acid)/poly(vinyl alcohol ...
Electrospun poly(acrylic acid)/poly(vinyl alcohol ...

The nanofibrous adsorbents were also applied through filtration tests for Cu(II) removal from the ,wastewater under, dynamic flow ,conditions,. 1. Introduction Copper (Cu) is ... groups of PAA and hydroxyl groups ,of PVA, by heat ,treatment,, ... adsorbents ,under, a highly ,acidic, condition due to the competitive effect of hydrogen ...

Removal of Polyvinyl Alcohol Using Photoelectrochemical ...
Removal of Polyvinyl Alcohol Using Photoelectrochemical ...

The formation of foam in biological equipment for the treatment of wastewater containing PVA also makes stable operations and acceptable performance very difficult. A large number of scientific studies on the removal of PVA have been carried out, most of which have focused on photochemically initiated degradation processes .

Biodegradation of polyvinyl alcohol by different dominant ...
Biodegradation of polyvinyl alcohol by different dominant ...

Simulated PVA wastewater (PVA = 100 mg/L) was modified with glucose (600 mg/L), NH 4 Cl (50 mg/L), KH 2 PO 4 (12 mg/L), and NaHCO 3 (550 mg/L) to prevent acidification and ensure that nutrient elements, such as C and P, were available at the amounts required by microorganisms.

pH-Responsive Biohybrid Carrier Material for Phenol ...
pH-Responsive Biohybrid Carrier Material for Phenol ...

possible biocarrier system for application in wastewater treatment. In these diblock copolymers, the pH-responsivity of P2VP at acidic conditions, which makes it suitable for applications in acidic media such as OMW, is combined with the low glass transition temperature of the PB block, offering a

KR100783754B1 - The process & equipments pva wastewater ...
KR100783754B1 - The process & equipments pva wastewater ...

The configuration of the present invention is a treatment method for treating wastewater containing a high concentration of PVA using the salting method and activated sludge method, the step of...

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

A novel hydrogel bead [,tannic acid, (TA)–poly(vinyl alcohol) (,PVA,)/sodium alginate (SA)] with high strength prepared by biocompatible ,PVA,, TA, and biocompatible SA via an instantaneous gelation method was applied to remove methylene blue (MB) from aqueous solution. The obtained TA–,PVA,/SA hydrogel beads were fully characterized by thermogravimetric analysis, Fourier-transform infrared ...

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

5/2/2020, · The variance of MW is due to the synthesis parameters such as the initial chain length of vinyl acetate polymer, the extent of hydrolysis to reduce the acetate groups and whether the hydrolysis is allowed ,under, alkaline or ,acidic conditions, [36, 37]. ,PVA, can be synthesized by hydrolysis from varieties of poly(vinyl esters) and poly(vinyl ethers).

jen00342 prn 63.
jen00342 prn 63.

(2006). Under acidic conditions, PVA addition to water could promote the solubilization and dispersion of O 3 into sub-strates by formation of a structured and persistent foam. This foaming ability permits O 3 to be trapped in the water system, which enhances the ozonation by prolonging O 3 persistence.

Research Article Removal of Polyvinyl Alcohol Using ...
Research Article Removal of Polyvinyl Alcohol Using ...

e ective ,treatment of PVA, because the degradation capacity of most microorganisms towards ,PVA, is extremely low and speci c to ,PVA, [ ]. e formation of foam in biological equipment for the ,treatment, of ,wastewater, containing ,PVA, also makes stable operations and acceptable performance very di cult. A large number of scienti c studies on the

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