Polytetrafluoroethylene (PTFE) hollow fiber AnMBR performance in the treatment of organic wastewater with varying salinity and membrane cleaning behavior

Li, Jing; Jiang, Changwang; Shi, Wansheng; Song, Feiyue; He, Di; Miao, Hengfeng; wang, Tao; Deng, Jingxuan; Ruan, Wenquan

doi:10.1016/j.biortech.2018.07.063

Cited by 24 publications

(3 citation statements)

References 40 publications

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“…Li et al (2018) reported that a PTFE hollow‐fiber AnMBR, treating organic wastewater with different degrees of salinity, was successful in limiting membrane fouling. The PTFE hollow‐fiber component played a key role in mitigating membrane fouling.…”

Section: Membrane Treatment Technologiesmentioning

confidence: 99%

Food‐processing wastes

Frenkel

Cummings

Maillacheruvu

et al. 2020

Water Environment Research

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Literature published in 2018 and literature published in 2019 related to food-processing wastes treatment for industrial applications are reviewed. This review is a subsection of the Treatment Systems section of the annual Water Environment Federation literature review and covers the following food-processing industries and applications: general, meat and poultry, fruits and vegetables, dairy and beverage, and miscellaneous treatment of food wastes.

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Section: Membrane Treatment Technologiesmentioning

confidence: 99%

Food‐processing wastes

Frenkel

Cummings

Maillacheruvu

et al. 2020

Water Environment Research

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“…[45][46][47] Thus, the load and treatment efficiency of the reactor are Due to the unique structure, the IC reactor also has excellent performance under high load. 50) IC reactors can often handle At present, the research hotspots of high-efficiency anaerobic reaction process of high-salt organic wastewater mainly include high-efficiency reactors [53][54][55][56][57][58][59][60][61][62][63][64][65] , bio-enhancement [66][67][68][69][70][71][72][73] , etc.…”

Section: Suspended Sludge Granulation Technologymentioning

confidence: 99%

Analysis of Key Technologies for Industrialized Treatment of Fatty Acid High-Salinity Organic Wastewater

Lu¹,

Jeong²,

Yan³

et al. 2020

J Korean Soc Environ Eng

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Objectives : Wastewater produced by fatty acid production contains high concentration of organic substances and high concentration of salts (mainly sodium sulfate), causing great pollution to water resources and environment. The pollution prevention and control of this type of wastewater are very necessary. The key to treating this type of wastewater is to remove salts and COD to achieve harmless treatment. This is a problem in wastewater management that has plagued the industry for a long time. This paper proposed a technique suitable for fatty acid high salinity organic wastewater.Methods : First, the industrial treatment technology of organic wastewater with high salinity was introduced and analyzed. Combined with the principle of industrial wastewater treatment, the process route for the treatment of fatty acid high salinity organic wastewater was analyzed and selected. In addition, the key technology and process for anaerobic desalination and COD removal were analyzed and selected.Results and Discussion : According to the unique nature of this type of wastewater mainly containing sulphate salts and the feasibility of industrial production, a special technology combination was proposed to treat this wastewater at this stage. Since this wastewater has a B/C ratio of 0.4 to 0.45, it is easier to use biological treatment method. Thus, the conventional treatment method is pretreatment + biological treatment. Biological enhancement and reactor process optimization can be studied for better efficiency.Conclusions : Considering the high COD and sulphate concentration characteristics of fatty acid high-salinity organic wastewater, high-efficiency anaerobic biochemical treatment is mainly considered. Combined with modern high-efficiency anaerobic suspended sludge granule technology, it was concluded that pretreatment + high efficiency IC anaerobic + secondary biological treatment can achieve industrialized treatment of such wastewater in a targeted, low-cost and reliable way. In the later stage, bio-enhancement of the anaerobic process as well as structural and process optimization of the reactor can be carried out to obtain better technical and economic results in production practice.

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“…Compared with flat sheet separation membranes, hollow fiber separation membranes have many advantages such as high specific surface area and loading density, simple fabrication of membrane modules (directly encapsulated in the membrane shell with the potting glue), flexible design, small floor area, easy cleaning, and leak detection [26]. They have been widely used in the fields of wastewater treatment, biological industry, pharmaceuticals, food, chemical industry, and environmental protection [27,28]. If the PPTA/PVDF blending system obtained using in situ polycondensation can be applied to the fabrication of hollow fiber membranes, the application field of PPTA-based molecular reinforced blend membranes will be greatly expanded.…”

Section: Introductionmentioning

confidence: 99%

Effects of spinning conditions on structure and properties of aramid-based hollow fiber blend separation membranes

Shi

Zhang

et al. 2019

Journal of Industrial Textiles

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The rigid-rod-like poly(p-phenylene terephthalamide) (PPTA), as the raw material of aramid 1414, has the characteristics of high modulus and hydrophilicity. The flat sheet poly(vinylidene fluoride) (PVDF)/PPTA blend separation membranes with improved hydrophilicity and enhanced modulus have been successfully prepared using in situ polycondensation method in our previous study. In this study, PPTA/PVDF hollow fiber blend separation membranes with enhanced hydrophilicity and mechanical strength were fabricated through the dry–wet spinning technique. Monomers of PPTA were polymerized in the PVDF solution, and the polymerization system was directly used as the spinning solution to fabricate the hollow fiber blend membrane. The effects of spinning conditions including the air-gap distance; the composition of core fluid; and composition of coagulation bath on the structure and properties including the separation properties, surface hydrophilicity, and mechanical properties of PPTA/PVDF hollow fiber blend membranes were well investigated. Membrane surface and cross-sectional morphologies were observed through scanning electron microscope. The enhancements of these spinning conditions weakened the phase separation process as a result of the formation of a small pore structure. The pore size distribution, water flux, and solute rejection varied accordingly. Different spinning conditions have different effects on the mechanical and hydrophilic properties of the hollow fiber blend membranes. Compared with pure PVDF hollow fiber membrane, blend membranes fabricated under different spinning conditions exhibited enhanced surface hydrophilicity and tensile properties. Finally, the change rates of the pure water flux and the solute rejection with different spinning conditions were calculated to further analyze and compare the statistically significant effects.

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Polytetrafluoroethylene (PTFE) hollow fiber AnMBR performance in the treatment of organic wastewater with varying salinity and membrane cleaning behavior

Cited by 24 publications

References 40 publications

Food‐processing wastes

Food‐processing wastes

Analysis of Key Technologies for Industrialized Treatment of Fatty Acid High-Salinity Organic Wastewater

Effects of spinning conditions on structure and properties of aramid-based hollow fiber blend separation membranes

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