CN100441525C - Method for preparing filtration material for earthworm biofilter - Google Patents
Method for preparing filtration material for earthworm biofilter Download PDFInfo
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- CN100441525C CN100441525C CNB2006100258837A CN200610025883A CN100441525C CN 100441525 C CN100441525 C CN 100441525C CN B2006100258837 A CNB2006100258837 A CN B2006100258837A CN 200610025883 A CN200610025883 A CN 200610025883A CN 100441525 C CN100441525 C CN 100441525C
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- earthworm
- filter tank
- biological filter
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The present invention provides a method for preparing filtering materials of earthworm biological filters, which belongs to the technical field of environmental protection. Firstly, a layer of composite filter screen is laid at the bottom of a filter, and the diameter of meshes is 2mm; sand gravel with the thickness of 18 to 22cm is laid as a diversion layer; saw dust with the thickness of 18 to 22cm is laid on the diversion layer as a filter layer; an earthworm treatment layer with the thickness of 35 to 40cm is laid on the filter layer. The earthworm treatment layer is prepared from substrate and wood block in advance, earthworms are added to substrates until species groups of the earthworms are basically stable to form mature substrates, and the mature substrates are mixed with the wood blocks according to a proportion of 2:1 to form the earthworm treatment layer. The method of the present invention has the advantages of good sewage treatment effect of prepared filtering materials and stable operation of filters.
Description
Technical field
What the present invention relates to is a kind of biological filter, specifically is a kind of filtrate preparation method of Worm biological filter tank.
Background technology
Worm biological filter tank is a kind of novel sewage disposal biotechnology, is to introduce the organic decomposition processing layer that includes specific earthworm kind on the basis of ordinary biofilter.Because earthworm has the organic substance of eating, it is (permeable to improve soil permeability, ventilation) and with microorganism synergy promote the ecological functions such as degraded of organic substance, therefore, can improve the voidage of filtrate, promote the degraded of organic substance in the sewage, and remove the sludge blockage phenomenon that may occur in the filter tank, thereby improve the processing power and the processing efficiency in filter tank.The introducing that earthworm is filtered decomposition layer has not only improved the disaggregating treatment efficient of organic pollutant in the sewage, but also has overcome this important disadvantages of ordinary biofilter sludge blockage in service.Worm biological filter tank also has certain denitrification dephosphorization function simultaneously.
Worm biological filter tank is different from ordinary biofilter, thereby its filtrate is also inequality.The good growing environment of earthworm and microorganism should be provided, make whole filter tank that enough sewage treatment capacity are arranged again.
Through new, do not find as yet to make identical or similar bibliographical information with theme Worm biological filter tank filtrate of the present invention to looking into of prior art.
Summary of the invention
The objective of the invention is at deficiency of the prior art, a kind of filtrate preparation method of Worm biological filter tank is provided, make its good growing environment that earthworm and microorganism both were provided, make whole filter tank that enough sewage treatment capacity are arranged again, improve the sewage treating efficiency of Worm biological filter tank.
The present invention is achieved by the following technical solutions, and the filtrate among the present invention is made up of three parts, comprises the earthworm processing layer, filtering layer and water conservancy diversion layer.At first at bottom, filter tank layer overlay synthetic materials filter screen, mesh diameter 2mm; Spread the thick gravel of 18～22cm then as the water conservancy diversion layer; Spread the thick wood sawdust of 18～22cm above the water conservancy diversion layer as filtering layer; Repave with the earthworm processing layer thickness 35～40cm on the filtering layer; The earthworm processing layer needs preparation in advance, is made up of matrix and wooden unit, and it is basicly stable to be cultured to the earthworm population behind the adding earthworm, becomes mature substrate; Then with this mature substrate and wooden unit with 2: 1 mixed the earthworm processing layer; Whole like this filtrate preparation finishes, and can dispose of sewage with it.
Described matrix, the bark by 3/5,1/5 swine excrement and 1/5 straw are formed, and after mixing, add healthy and strong Eisenia foetida or An Deai with endless belt and win 10,000/m of earthworm
2, cultivate, the earthworm population is basicly stable in whole matrix, and density no longer includes noticeable change, then becomes mature substrate.
Described wooden unit is long 2-4cm, wide 1-3cm, following irregularly shaped of thick 1cm.
Described earthworm processing layer, its surface is divided into ditch and ridge, and the bottom width of ridge is 0.5m, height 0.3m.When water in the sprinkling process can not flow away rapidly, earthworm can perch in ridge.
Described earthworm processing layer is the bioactive layer in filter tank, and is main under the acting in conjunction of earthworm and microorganism, and with the organism in the sewage, nitrogenous compound is removed, and removes part phosphorus simultaneously.
Described filtering layer is wood sawdust, and is Powdered, diameter 0.1-0.5mm, and its effect is to filter the water that flows down from the earthworm processing layer, microorganism wherein also has the organic function of partially disposed simultaneously.
Described water conservancy diversion layer is made up of gravel, long 2-4cm, and wide 2-3cm, thick 1-3cm, its function is the water that further filters under the wood sawdust laminar flow, is convenient to collect water outlet simultaneously.
The present invention under earthworm and microorganism acting in conjunction, has improved the ability of filter tank decomposing organic matter significantly, thereby has improved the sewage treatment capacity in filter tank by the introducing of earthworm, has also increased the ability of filter tank denitrogenation simultaneously.Also overcome this important disadvantages of ordinary biofilter sludge blockage in service.By the earthworm processing layer, after the three layer filtration of filtering layer and water conservancy diversion layer is handled, most of organism and nitrogenous compound in the sewage, and part phosphorus is removed.
Description of drawings
Fig. 1 the inventive method schema
Embodiment
As shown in Figure 1, the invention process step is as follows:
1. at first at bottom, filter tank layer overlay synthetic materials filter screen, mesh diameter 2mm;
2. it is thick to spread 18～22cm then, long 2-4cm, and wide 2-3cm, the gravel of thick 1-3cm is as the water conservancy diversion layer;
3. it is thick to spread 18～22cm above, and the Powdered wood sawdust of diameter 0.1-0.5mm is as filtering layer;
4. repave with the earthworm processing layer thickness 35～40cm on it;
5. grooving and ridge shape are made in earthworm processing layer surface, have promptly finished the preparation of filtrate:
6. feeding sewage, start working in the filter tank.
Providing embodiment below in conjunction with content of the present invention, is example with certain pig farm Worm biological filter tank Sewage treatment systems, and the preparation method is as follows for its filtrate:
The bottom, filter tank is a strip type, and the waste water after being convenient to handle flows out, and has sufficient intensity to support filtrate simultaneously again.The filter tank is a rectangle, long 5m, and wide 2.5m, the high 1.7m of enclosure wall, four jiaos of four shore supports ceilings, ceiling is 2.5m apart from the wall shortest distance.During filler, at first at bottom, filter tank layer overlay synthetic materials filter screen, the about 2mm of mesh diameter; Cover whole floors; Spread the thick gravel of 18～22cm then as the water conservancy diversion layer; Spread the thick wood sawdust of about 20cm above as filtering layer; Repave with the earthworm processing layer thickness 35～40cm on it; Grooving and ridge shape are made in earthworm processing layer surface, promptly finished the preparation of filtrate; Feeding sewage then makes the filter tank begin sewage disposal work.
Effect: after the filter tank was stable, removal of pollutants efficient was respectively in the sewage: the CODcr clearance is greater than 80%, BOD5Greater than 90%, nitrogen removal rate is greater than 65% greater than 85%, SS clearance for clearance. Table Composition and the proportioning of bright this filter are suitable, and wastewater treatment efficiency is better.
Claims (6)
1. the filtrate preparation method of a Worm biological filter tank is characterized in that: at first at bottom, filter tank layer overlay synthetic materials filter screen, mesh diameter 2mm; Spread the thick gravel of 18～22cm then as the water conservancy diversion layer; Spread the thick wood sawdust of 18～22cm above the water conservancy diversion layer as filtering layer; Repave with the earthworm processing layer thickness 35～40cm on the filtering layer; Described earthworm processing layer needs preparation in advance, form by matrix and wooden unit, described matrix is made up of 3/5 bark, 1/5 swine excrement and 1/5 straw, it is basicly stable to be cultured to the earthworm population behind the matrix adding earthworm, become mature substrate, with this mature substrate and wooden unit with 2: 1 mixed the earthworm processing layer.
2. the filtrate preparation method of Worm biological filter tank according to claim 1 is characterized in that, described matrix after mixing, adds healthy and strong Eisenia foetida or An Deai with endless belt and wins 10,000/m of earthworm
2, cultivate, the earthworm population is basicly stable in whole matrix, then becomes mature substrate.
3. the filtrate preparation method of Worm biological filter tank according to claim 1 is characterized in that, described wooden unit is long 2-4cm, and wide 1-3cm is below the thick 1cm.
4. the filtrate preparation method of Worm biological filter tank according to claim 1 is characterized in that, described earthworm processing layer, and grooving and ridge are divided in its surface, and the bottom width of ridge is 0.5m, height 0.3m.
5. the filtrate preparation method of Worm biological filter tank according to claim 1 is characterized in that, described filtering layer is a wood sawdust, and wood sawdust is Powdered, diameter 0.1-0.5mm.
6. the filtrate preparation method of Worm biological filter tank according to claim 1 is characterized in that, described water conservancy diversion layer is made up of gravel, the long 2-4cm of gravel, wide 2-3cm, thick 1-3cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100258837A CN100441525C (en) | 2006-04-20 | 2006-04-20 | Method for preparing filtration material for earthworm biofilter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100258837A CN100441525C (en) | 2006-04-20 | 2006-04-20 | Method for preparing filtration material for earthworm biofilter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1843978A CN1843978A (en) | 2006-10-11 |
| CN100441525C true CN100441525C (en) | 2008-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100258837A Expired - Fee Related CN100441525C (en) | 2006-04-20 | 2006-04-20 | Method for preparing filtration material for earthworm biofilter |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101250014A (en) * | 2008-01-23 | 2008-08-27 | 南京大学 | Tower earthworm ecological filter tank system |
| CN101654302B (en) * | 2009-09-21 | 2011-05-25 | 同济大学 | Method for removing algae in water by using earthworms |
| CN103663704B (en) * | 2013-11-26 | 2015-08-26 | 上海交通大学 | A kind of filtrate preparation method of Worm biological filter tank |
| CN103663864B (en) * | 2013-11-26 | 2015-05-20 | 上海交通大学 | Method for preparing filter material with earthworm treatment layer in earthworm biofilter by aerated concrete block |
| CN103663703B (en) * | 2013-11-26 | 2016-01-13 | 上海交通大学 | The Worm biological filter tank filtrate preparation method of dealing with earthworm layer is made of inorganic filtrate |
| CN104012291A (en) * | 2014-06-25 | 2014-09-03 | 陈巧兰 | Balcony ecological cultivating device |
| CN107935191A (en) * | 2017-12-27 | 2018-04-20 | 海南大学 | A kind of dismountable artificial wetland domestic sewage processing system |
| JP2023120761A (en) * | 2022-02-18 | 2023-08-30 | 株式会社Lixil | Sewage treatment apparatus and sewage treatment system |
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| JPH0483593A (en) * | 1990-07-26 | 1992-03-17 | Meidensha Corp | Apparatus for simultaneously removing nitrogen and phosphorus in waste water |
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| CN1369441A (en) * | 2001-02-15 | 2002-09-18 | 上海复旦申花净化技术股份有限公司 | System for treating organic sewage with earthworm |
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Granted publication date: 20081210 Termination date: 20110420 |