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 ap

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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Example Embodiment

[0031] Example 1:

[0032] This example uses similar figure 2Of the immersed membrane bioreactor system for experiments. In this embodiment, artificially formulated wastewater with sodium citrate as the main component is used as the treatment object, and trace components such as urea, phosphoric acid, and ferric chloride are additionally added to provide sufficient nutrients for microorganisms. The synthetic matrix components are shown in Table 1. The non-woven membrane used in the filter module is polypropylene non-woven with a thickness of 0.3mm and a surface area of ​​0.1m 2 , The average pore size is 39μm. The polypropylene non-woven fabric has been subjected to surface treatment of acrylic monomer activated grafting (activated grafting), and has hydrophilicity. The hollow tubular support material used in the filter module is polypropylene non-woven fabric with a thickness of 6mm and a central hole diameter of 20mm.

[0033] The operating conditions of the membrane biological ...

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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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