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Membrane bioreactor using non fabric filtration

A membrane bioreactor and non-fabric technology, applied in the field of submerged membrane bioreactors, can solve the problems of high initial cost, high quality requirements of influent water, and high energy consumption

Inactive Publication Date: 2003-07-02
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although there are currently many types of membranes used in solid-liquid separation membrane biological treatment technology, the membrane materials of these membranes are currently in the range of membrane pore size of UF and MF membranes, so this technology still has some application restrictions, such as The water quality requirements are higher, the initial cost is still higher than the traditional activated sludge technology, and the energy consumption is higher. Therefore, if the shortcomings can be improved, the technology will be more widely used.

Method used

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  • Membrane bioreactor using non fabric filtration
  • Membrane bioreactor using non fabric filtration
  • Membrane bioreactor using non fabric filtration

Examples

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Embodiment 1

[0032] This example uses something like figure 2The submerged membrane bioreactor system was used for experiments. This embodiment takes sodium citrate as the main component of artificially prepared wastewater as the treatment object, and additionally adds trace components such as urea, phosphoric acid and ferric chloride to provide sufficient nutrients for microorganisms. The artificially synthesized matrix components are shown in Table 1. The non-fabric membrane used in the filter module is polypropylene non-fabric with a thickness of 0.3mm and a surface area of ​​0.1m 2 , with an average pore size of 39 μm. The polypropylene non-woven fabric is made hydrophilic by surface treatment of plasma activated grafting of acrylic monomers. The hollow tubular support material used in the filter module is polypropylene non-woven fabric with a thickness of 6 mm and a central hole diameter of 20 mm.

[0033] The operating conditions of the membrane bioreactor tank are controlled as ...

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Abstract

A submerged membrane bioreactor with non-fabric filter is composed of a tank containing microbial mixture liquid and a fitler module submerged in the said mixture liquid. The filter module has a penetrable surface for passing the mixture liquid through it, and is composed of a porous supporting material with the said penetrable surface and a second surface, and a non-fabric membrane with a thickness between 0.1-2 mm and pores between 0.2-100 microns covering on the second surface.

Description

technical field [0001] The present invention relates to a submerged membrane bioreactor (submerged membrane bioreactor), in particular to a non-fabric membrane filter module configured therein. Background technique [0002] When using the activated sludge process to treat wastewater, the idea of ​​solid-liquid separation membrane biological treatment technology using ultrafiltration (MF) or microfiltration (MF) units to replace sedimentation tanks and sand filter tanks began in 1969. Compared with the traditional activated sludge method, solid-liquid separation membrane biological treatment technology has many technical advantages, such as long sludge residence time, treatment of wastewater with high concentration changes, no need for sedimentation unit (saving space), etc. So far, there are at least 500 solid-liquid separation membrane biological treatment plants in operation around the world, and most of the membrane materials used are microporous (pore...

Claims

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Application Information

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IPC IPC(8): B01D29/11B01D39/16B01D61/18B01D63/00B01D63/06B01D65/00C02F3/00C02F3/12C02F3/30
CPCB01D39/1623C02F3/1273Y02W10/10
Inventor 张王冠张敏超洪仁阳邵信
Owner IND TECH RES INST
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