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Method for preparing filtration material for earthworm biofilter

A biofilter and earthworm technology, applied in the direction of sustainable biological treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problems that have not been found in the literature reports of making the same or similar filter materials of earthworm biofilters, Achieve the effects of improving sewage treatment capacity, overcoming sludge clogging, and improving the ability to decompose organic matter

Inactive Publication Date: 2008-12-10
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] After checking the novelty of the prior art, it has not been found that the same or similar bibliographical reports have been made with the earthworm biofilter filter material of the subject of the present invention

Method used

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  • Method for preparing filtration material for earthworm biofilter

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Embodiment Construction

[0015] Such as figure 1 Shown, the implementation steps of the present invention are as follows:

[0016] 1. First, lay a layer of synthetic material filter screen on the bottom of the filter tank, with a mesh diameter of 2mm;

[0017] 2. Then spread 18-22cm thick, 2-4cm long, 2-3cm wide, and 1-3cm thick gravel as a diversion layer;

[0018] 3. Spread 18-22cm thick powdered sawdust with a diameter of 0.1-0.5mm on it as a filter layer;

[0019] 4. Spread an earthworm treatment layer on it, with a thickness of 35-40cm;

[0020] 5. The surface of the earthworm treatment layer is made into grooves and ridges, and the preparation of the filter material is completed:

[0021] 6. Enter the sewage, and the filter starts to work.

[0022] Provide embodiment below in conjunction with content of the present invention, take certain pig farm earthworm biofilter sewage treatment system as example, its filter material preparation method is as follows:

[0023] The bottom of the filter t...

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Abstract

The invention provides a process for preparing filtering material of earthworm bio-filter, which belongs to an environmental protection technical sphere. First, laying a bed of composite material colatorium on the bottom of the filter, with colatorium diameter of 2mm; then, laying gravel with thickness of 18-22cm and taking it as a diversion bed; laying wood dust with thickness of 18-22cm on the diversion bed and taking it as a filter bed; laying an earthworm disposal bed with thickness of 35-40cm on the filter bed; said earthworm disposal bed needing pre-preparation, and comprising stromas and wood bricks, adding earthworms into stromas and culturing earthworms until earthworms population is steady basically and becomes mature stromas, mixing the mature stromas and wood bricks with proportion as 2:1 and getting the earthworm disposal bed. The filtering material prepared with the process has good sewage treatment effect, and the filter operates stably.

Description

technical field [0001] The invention relates to a biological filter, in particular to a method for preparing filter material of an earthworm biological filter. Background technique [0002] Earthworm biofilter is a new type of sewage treatment biotechnology, which introduces an organic decomposition treatment layer containing specific earthworm species on the basis of ordinary biofilter. Because earthworms have ecological functions such as swallowing organic matter, improving soil permeability (water permeability, ventilation) and synergizing with microorganisms to promote the degradation of organic matter, it can increase the porosity of the filter material and promote the degradation of organic matter in sewage. And remove the sludge clogging that may occur in the filter, thereby improving the processing capacity and efficiency of the filter. The introduction of the earthworm filter decomposition layer not only improves the decomposition and treatment efficiency of organi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32C02F3/10
CPCY02W10/10
Inventor 李银生邱江平保罗·骆宾
Owner SHANGHAI JIAOTONG UNIV