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Dynamic filter module

A kind of filter body, dynamic technology, applied in the direction of filtration and separation, fixed filter element filter, water/sludge/sewage treatment, etc., can solve the problem of shortening the cycle of dynamic filter layer peeling and regeneration, and achieve stable filtered water volume. Effect

Inactive Publication Date: 2008-11-26
EBARA ENG SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the accumulation of sludge particles on the dynamic filter layer is greater at the location where the flow rate of filtered water is large, and there is a problem that the cycle of peeling and regeneration of the dynamic filter layer is shortened.

Method used

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Embodiment 1

[0059] use figure 2 The dynamic filter body module shown, for the figure 1 The activated sludge mixture obtained in the activated sludge treatment system for residential drainage is subjected to solid-liquid separation treatment.

[0060] As a support material for forming the dynamic filter layer, a polyester woven cloth with a thickness of about 0.1 mm and a pore diameter of 114 μm sandwiched between two polyethylene meshes with a mesh size of 10 mm and a thickness of 2.0 mm was used. 5 effective areas of 1m 2 Each piece of planar filter body module is immersed and arranged in the filter separation tank. The water level difference during filtration is about 10 cm, and the cross flow velocity of the sludge mixture on the surface of the filter body is 0.025 m / s on average.

[0061] Every 2 hours of filtration operation, the cleaning operation of air cleaning outside the filter body-air cleaning inside the filter body-water cleaning inside the filter body and mud discharge i...

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Abstract

The present invention has an object to provide a dynamic filter module which can inhibit deterioration of the filtration flux due to deposition of sludge inside the filter to stably give good treated water. In order to achieve such an object, the present invention provides, in one embodiment, a dynamic filter module for the separation of activated sludge having a water permeable filtration layer support material for forming a dynamic filtration layer as at least part of the surrounding wall of a support whose inside is hollow, the module having the filtration section having a water permeable filtration layer for forming a dynamic filtration layer, a filtrate water outlet arranged above and / or below the filtration section, and further having a sludge collection section having a sludge discharge outlet arranged below the filtration section.

Description

technical field [0001] The present invention relates to a filter module used in the solid-liquid separation of activated sludge mixed liquid generated by the biological treatment process of wastewater or the concentration of excess sludge, etc., especially relates to the filter module that can be used for organic industrial wastewater or domestic drainage and so on for the processing of the filter body module. Background technique [0002] Conventionally, in water treatment by activated sludge, it was necessary to perform solid-liquid separation of activated sludge in order to obtain treated water. Usually, for this purpose, the method of introducing activated sludge into a sedimentation tank, settling the sludge by gravity, and using the supernatant liquid as treated water to flow out of the sedimentation tank is used. However, in this method, in order to settle the activated sludge, a settling tank having a sufficient settling area and residence time is required, and this...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D37/02C02F3/12B01D29/15B01D29/17
CPCB01D29/15B01D29/17B01D37/02B01D29/62B01D29/66
Inventor 葛甬生小西聪史田中俊博
Owner EBARA ENG SERVICE
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