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Acid wastewater flocculant polyacrylamide

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Acid wastewater flocculant polyacrylamide
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.

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

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 adjusting the pH to cause the salting reaction by adjusting the pH of the separated high concentration ,PVA wastewater, in a pH adjustment tank Wow; Thereafter injecting boric acid into the ,PVA wastewater, eluted in the above process in the flocculation reactor and injecting boric acid into the ,PVA, ...

PVA waste water treatment-Enterprise Dynamic-Qingdao ...
PVA waste water treatment-Enterprise Dynamic-Qingdao ...

Wet oxidation is a high-level oxidation ,treatment, of high concentration of biodegradable organic ,wastewater,. It refers to oxidation of organic pollutants to oxygen or air at high temperature (125-320 ℃ ) ,under, high pressure (0.5-20MPa) Organic small molecule material or its mineralized into carbon dioxide and water and other inorganic chemical processes.

An Efficient Biotreatment Process for Polyvinyl Alcohol ...
An Efficient Biotreatment Process for Polyvinyl Alcohol ...

PVA, (Polyvinyl alcohol) is completely degraded and utilized by non-ubiquitous microorganisms as a sole source of carbon. ,PVA, containing effluent treatments are not preferred because of high cost.

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.

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...

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).

Degradation of polyvinyl alcohol (PVA) by UV/chlorine ...
Degradation of polyvinyl alcohol (PVA) by UV/chlorine ...

1/11/2017, · In this study, the degradation efficiency ,of PVA, greatly increased in ,acidic conditions, and decreased in alkaline ,conditions,. After 4 min (UV fluence, F = 624 mJ/cm 2 ), the level ,of PVA, at pH 4, 7, and 10 was reduced by 100%, 50%, and 10%, respectively, and the degradation rate was also much higher in ,acidic, condition ( Fig. 4 ).

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 ...

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.

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 ...

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

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 …

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 .

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

The present invention relates to a chemical and biological treatment method and apparatus for ,wastewater, containing ,PVA,, and an object thereof is to simply and economically treat ,wastewater, generated in various fields using ,PVA, as a raw material or a raw material containing ,PVA,. It's about making it happen. The configuration of the present invention is a treatment method for treating ...

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.

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

investigation could be helpful for the ,treatment, of ,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

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