Double-layer structured flat membrane element for membrane bioreactor
A technology of membrane bioreactor and double-layer structure, which is applied in biological water/sewage treatment, membrane technology, semi-permeable membrane separation, etc., can solve the problems of increasing process complexity, floor space and construction cost, and application barriers. Achieve good effluent quality, improved work efficiency, and good denitrification ability
Inactive Publication Date: 2013-11-27
SOUTH CHINA NORMAL UNIVERSITY
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Problems solved by technology
The second problem is the denitrification efficiency of MBR
Although these improved processes have good denitrification capabilities, they also greatly increase the complexity of the process, occupy an area and build costs, so there are still obstacles in the application
Method used
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Embodiment 1
[0033] Prepare : 30cm*20cm*1cm plastic guide plate, 30cm*20cm chemical fiber guide cloth, 30cm*20cm PVDF ultrafiltration membrane, 30cm*20cm*1cm sponge.
[0034] Double-layer membrane element: Supported by a 30cm*20cm*1cm plastic deflector (three grooves are equidistantly arranged on the deflector, and the width of the groove is 0.8cm), and the two sides are sequentially laid with chemical fiber guide cloth from the inside to the outside (thickness 0.1mm), 30cm*20cm PVDF ultrafiltration membrane (pore size 0.1μm), 30cm*20cm*1cm sponge; the deflector, deflector cloth, ultrafiltration membrane and sponge of the membrane element are sealed with waterproof adhesive Secure and seal all around. This membrane element has two sides, both sides are double-layer membrane structure, the structure is as follows Figure 5 shown. There is a suction port above the membrane element (the diameter of the suction port is 0.8cm), which can be connected to a water pump for suction filtration. ...
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Abstract
The invention discloses a double-layer structured flat membrane element for a membrane bioreactor. The double-layer structured flat membrane element for membrane bioreactor is a one-sided double-layer flat membrane element or a two-sided double-layer flat membrane element, and comprises a guide plate, a guide cloth, a microfiltration or ultrafiltration membrane and a membrane-shaped filler layer. The double-layer structured flat membrane is obtained through installing the membrane-shaped filler layer on a traditional single-layer flat membrane. The membrane-shaped filler layer is in favor of the formation and growth of the biomembrane, and can prevent the direct adherence of particles in sewage to the microfiltration or ultrafiltration membrane to form multilayer filtration. Compared with traditional flat membrane elements, the membrane element disclosed in the invention has the advantages of difficult obstruction and pollution, improved work efficiency, good nitrogen removal capability, good outlet water quality, and stable and reliable running.
Description
technical field [0001] The invention relates to a double-layer structure flat membrane element used in a membrane bioreactor. Background technique [0002] As the country increases investment in green environmental protection, wastewater treatment has attracted more and more attention from the public. At present, biological processes are usually used for wastewater treatment, and traditional biological processes use secondary sedimentation tanks for subsequent treatment. The wastewater treatment process of this process is relatively long, and the secondary sedimentation tank occupies a large area and requires high investment. Therefore, this processing system and process are not suitable for the current development trend. [0003] In recent years, membrane bioreactor (Membrane Bioreactor, referred to as MBR) has gradually become the mainstream treatment process. Membrane bioreactor is a sewage treatment process that combines high-efficiency membrane separation technology ...
Claims
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IPC IPC(8): B01D63/08B01D61/18C02F3/00
Inventor 江峰李腾张泽锋张秋云
Owner SOUTH CHINA NORMAL UNIVERSITY