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Hollow fiber membrane assembly

A fiber membrane and membrane module technology, which is applied in the research and development and application fields of membrane bioreactors, can solve the problems of complicated arrangement of aeration equipment, reduction of membrane effective area, and high price of membrane modules, so as to reduce aeration intensity and reduce pollution. , Assemble and make simple effect

Inactive Publication Date: 2006-06-14
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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Problems solved by technology

[0002] Membrane technology has attracted widespread attention in the water treatment industry because of its reliable effluent quality, simple and convenient operation methods, etc. However, problems such as expensive membrane modules and flux attenuation caused by membrane fouling have seriously hindered the promotion and application of membrane technology.
This leads to cumbersome membrane module installation and aeration equipment layout in the engineering application process. In addition, the increase in the number of membrane modules and the decrease in the effective area of ​​the membrane also aggravate membrane fouling during the application process.

Method used

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Embodiment Construction

[0010] Will contain COD 200~500mg / L, BOD 5 100~300mg / L, ammonia nitrogen 100~260mg / L, SS 20~50mg / L toilet sewage enters the activated sludge membrane bioreactor for treatment. m 3 / hr, temperature 12~29℃, pH 6.5~8.0, stable operation for 6 months. The membrane flux of the system is stable at 14.25L / m 2 h, the operating pressure is 18-22kpa, and the treatment effect is stable. The COD value of the system effluent varies between 10 and 30mg / L, and is generally stable below 20mg / L. 5 The value fluctuates between 1 and 3mg / L, the ammonia nitrogen is stable below 10mg / L, the SS is stable below 0.3mg / L, and the effluent water quality meets the "Urban Sewage Recycling-Urban Miscellaneous Water Quality" (GB / T18920-2002) standard .

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Abstract

A curtain-type hollow fiber membrane module is composed of membrane fibers, water collecting tube and aerating tubes. It features that the ultrafiltering or microfiltering hollow fiber membrane made of the membrane fibers with 1.5-3.5 m in length integrate the aeration flushing with sucking and collecting water for increasing the flux of membrane and decreasing the energy consumption for flushing.

Description

technical field [0001] The invention belongs to the technical field of research and development and application of membrane bioreactors, in particular to a novel curtain-type hollow fiber membrane module Background technique [0002] Membrane technology has attracted widespread attention in the water treatment industry because of its reliable effluent quality, simple and convenient operation methods, etc. However, problems such as expensive membrane modules and flux attenuation caused by membrane fouling have seriously hindered the promotion and application of membrane technology. . [0003] At present, in order to solve the above problems, research at home and abroad mainly focuses on the following aspects for in-depth research and development: (1) Mechanism research, mainly including membrane separation kinetics mechanism, membrane fouling formation and control mechanism, etc. (Shimizu.et.al, Filtration Characteristics of Hollow Fiber Microfiltration Membrane used in Memb...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D63/02C02F3/02
CPCY02W10/10
Inventor 樊耀波李刚吴琳琳董春松杨问波
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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