CN202610036U - Biological earthworm filtering basin - Google Patents
Biological earthworm filtering basin Download PDFInfo
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- CN202610036U CN202610036U CN2012202830323U CN201220283032U CN202610036U CN 202610036 U CN202610036 U CN 202610036U CN 2012202830323 U CN2012202830323 U CN 2012202830323U CN 201220283032 U CN201220283032 U CN 201220283032U CN 202610036 U CN202610036 U CN 202610036U
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- Prior art keywords
- earthworm
- filter tank
- filter
- biological
- filtrate
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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
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The utility model relates to a biological earthworm filtering basin, which comprises a filtering basin, wherein the filtering basin sequentially comprises a water distribution area, a material filtering area and a water draining area from top to bottom; a water distributor is arranged in the water distribution area; and a filtering bed is arranged in the material filtering area. The biological earthworm filtering basin is characterized in that the filter material of the filtering bed is ceramsites, an upper layer of filter material and a lower layer of filter material are arranged, and earthworms are put in the upper layer of filter material. The biological earthworm filtering basin has the advantages of low investment, easiness in maintenance, strong ability to decontamination and higher application value.
Description
Technical field
The utility model relates to a kind of filter tank, especially relates to a kind of biological earthworm filter tank, belongs to field of environment engineering technology.
Background technology
For a long time, rural area peasant household sewage, non-irrigated lavatory fecal sewage, agricultural and township industry enterprise tail water up to standard etc. because of no emission abatement has injured rural environment, have polluted water body.Can find out that by the sewage quality table the main contamination index of sewage is COD, ammonia nitrogen, total phosphorus and suspended solids (SS), China's production at present and the scattering sewage treatment device that uses; The overwhelming majority is to be main purpose to remove organism (COD), but is limited to the removal of nitrogen, phosphorus, only from excess sludge, gets rid of nitrogen, phosphorus; It is about 10～25% that it removes nitrogen, and phosphorus is about 10～30%, does not reach above-mentioned requirements; Therefore, need to adopt technology with biological carbon and phosphorous removal performance.
Along with the develop rapidly of rural economy, discharged waste water grows with each passing day.According to statistics, the present sewage annual emissions of China is 365 billion cubic meters, and processing rate is but less than 10%.Any discharging of these sewage not only pollution ecology system causes serious threat to human beings'health, and the waste precious water resource has a strong impact on the sustainable economic development of China.Handle about country sewage; Oxidation pond process that once extensively adopts and percolation treatment technology fast, its treatment effect is not too obvious, and nitrogen and phosphorus content still can not stably reaching standard in the waste water after the processing; Can not stablize and reach discharging standards; Integrated bio-contact oxidation reactor drum+drowned flow artificial wet land technical finesse is respond well, but its power consumption is high, and the later maintenance expense is high.
(vermibiofiltration VBF) is a treatment technology to sewage that grows up in France and Chile in recent years to the earthworm filtration treatment of sewage.This technology is to have the ecological functions such as decomposition and inversion that improve soil aeration water permeability and promotion organic substance according to earthworm to design.This technology has especially obtained initial success in the test of Chile, thereby has laid a good foundation for applying of this technology in France.The action principle of Worm biological filter tank mainly is to utilize the activity of earthworm to realize the filter tank ventilation oxygen-supplying and solve the filter tank blockage problem.In addition, through get the on the spot reduction that food can realize in biological filter operational process excess sludge of earthworm, save sludge treatment structures and corresponding working cost thereof to biological sludge in the filter tank.Simultaneously, the biofilm system that filter material surface forms can further carry out purifying treatment (especially playing tangible denitrogenation) to sewage, thereby Worm biological filter tank is possessing very strong processing power aspect the processing domestic sewage in rural areas by using.
But traditional Worm biological filter tank of using so far from external introduction mainly adopts quartz sand filter media, and quartzy sand grains is because density is big; Specific surface area, porosity are little; When effluent stream during through filtering layer resistance very big, living weight is few, causes thus that filter loading is not high, head loss is big.Therefore, select to be more suitable for appropriate filter materials, improve the operation usefulness of Worm biological filter tank in Worm biological filter tank.
The utility model content
Be to solve the deficiency of prior art, the purpose of the utility model is to provide a kind of less investment, easy care, biological earthworm filter tank that dirty removal capacities is strong.
For achieving the above object, the utility model is to realize through following technical scheme:
A kind of biological earthworm filter tank comprises the filter tank, and described filter tank comprises water distribution zone, filtrate district and drained zone from top to bottom successively; Described water distribution zone is provided with water distributor; Described filtrate district is provided with filter bed, it is characterized in that, the filtrate of described filter bed is a haydite; And two-layer about being provided with, it also is provided with earthworm in filtrate at the middle and upper levels.
Further, the porosity of described haydite is more than 40%, for a large amount of oxygen and high ventilation space have been created in the existence of earthworm.
In addition, the top of described upper strata filtrate also is provided with the plastic optical fibre packing layer, with effective reduction sunlight strength and cushion sluicing.And the porosity of described plastic optical fibre packing layer is more than 96%, has bigger specific surface area, and bioadhesion power is bigger.
And the surface distance 0.2 ~ 0.3m of described water distributor and plastic optical fibre packing layer.
In addition, described water distributor is rotary water distributor, realizes continuous water distribution.
The beneficial effect of the utility model is:
On the one hand; The utility model has been introduced earthworm in the filtrate of upper strata; The activity of earthworm has improved the speed of oxygen supply of the utility model; Help aerobic microbiological (microbial film) that filter material surface the adheres to fast purification to sewage, earthworm and mikrobe collaborative " operation " can be improved the operational efficiency of original biological filter chamber treatment system, and the accumulation of digging action of earthworm and earthworm excrement can realize the quick improvement of soil; The earthworm excrement of results can be used as the good feed of rural area poultry farming, has higher economic value.
On the other hand, the filtrate in the utility model forms filter bed by ceramic grain filter, has replaced traditional quartz sand filter media, compares to have following characteristic:
(1) high oxygen, the highly air-permeable of holding
Up to more than 40%, for a large amount of oxygen and high ventilation space have been created in the existence of earthworm, the density of oxygen is a little more than air, and has the ability of dissolving in water body with the ceramic grain filter voidage in the earthworm filter tank, and therefore, filter bed depths in length and breadth all can obtain certain dissolved oxygen.Simultaneously; Because the pore space in the effect of haydite particulate framework, filter bed all is in the network channel state that extends in all direction, so gas has stronger circulation in filter bed; Avoided the anaerobic poisoning effect; The haydite filter bed meets the physiology of earthworm, ecological requirement, and the space with sufficient surge capability can strengthen the flexibility of earthworm to the sewage sludge processing environment significantly;
(2) high stable state, heat insulating
Adopting the ceramic grain filter filtration velocity in the filter tank is more than the 20m/h, and voidage is big.Therefore, no matter be to rain, or under the big situation of water yield fluctuation, water can both pass through filter bed very soon, and seeping phenomenon can not occur.Therefore, when normally moving, the haydite filter bed had both had higher water ratio, again can be owing to ponding stops up pore; Thereby for the existence of earthworm provides stable humidity condition, but traditional silica sand filter bed is behind long-play, and the filtrate porosity significantly reduces, and filter bed is blocked easily; Lose the filter tank function, meanwhile, the haydite heat insulating ability is good, and thermal conductivity is little; Specific heat capacity is lower, thereby, the water inlet to the filter bed Influence of Temperature greater than environment to the filter bed Influence of Temperature.Haydite filter bed temperature receives the regulation and control of inflow temperature significantly, for good temperature condition has been created in earthworm existence.Haydite has that unit weight is little, the premium properties of heat insulating in addition, and haydite uses as lagging material often under construction, and the sand filtering material of therefore making pottery can be kept the temperature of filtering layer; Opposing winter low temperature condition is kept the earthworm living weight in the filter bed to the disadvantageous effect of earthworm, guarantees the treatment effect of earthworm and ecological filter; The utility model run duration, midsummer duration of test, the environment extreme temperature up to 35 ℃～38 ℃; And winter, extreme temperature was made an appointment with-5 ℃; Haydite filter bed top temperature in summer is about 28 ~ 30 ℃, and winter minimum temperature is about 5～7 ℃, for earthworm adapts to extreme temperature and operation steady in a long-term provides very advantageous conditions;
(3) be prone to mediation
The ceramic grain filter light weight, interaction force is mainly pressure and frictional force between the particle, and cohesive force is less, each other with a contact; And the haydite particle is rounded, does not have corner angle shrilly, is prone to slide, and only can overcome the cohesive force between the particle with water impact; Avoid causing and harden, and ceramic grain filter is held mud rate height; No matter how earthworm moves in filter bed, the cavernous structure of diameter greater than the haydite particle diameter in filter bed, all can not occur, has avoided occurring short flow phenomenon; Earthworm almost only need overcome the haydite action of gravity, can carry out fluffing action preferably to the filter bed surface, avoids occurring local mud clustering phenomena.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment.
The main mark implication is following among the figure:
1, filter tank 2, upper strata filtrate 3, lower floor's filtrate
4, earthworm 5, water distributor 6, plastic optical fibre packing layer.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done concrete introduction.
Fig. 1 is the structural representation of the utility model one embodiment.
As shown in Figure 1: a kind of biological earthworm filter tank, comprise filter tank 1, described filter tank 1 comprises water distribution zone, filtrate district and drained zone from top to bottom successively; Described water distribution zone is provided with water distributor 5, and described water distributor is rotary water distributor, can realize continuous water distribution; Described filtrate district is provided with filter bed; The filtrate of described filter bed is a haydite, and the porosity of haydite is more than 40%, for a large amount of oxygen and high ventilation space have been created in the existence of earthworm; And filter bed is provided with two-layer up and down, and it also is provided with earthworm 4 in filtrate 2 at the middle and upper levels.And the top of filtrate 2 also is provided with plastic optical fibre packing layer 6 on described upper strata, and the porosity of described plastic optical fibre filler 6 is more than 96%.In addition, the above-mentioned water distributor 5 and the surface distance 0.2m of plastic optical fibre packing layer 6, certainly, the surface distance of water distributor 5 and plastic optical fibre packing layer 6 can be the arbitrary value between the 0.2m-0.3m.
In this embodiment, described plastic optical fibre packing layer 6 has bigger specific surface area, and bioadhesion power is bigger, is suitable for mikrobe in its surface growth and breeding.Simultaneously; Plastic optical fibre packing layer 6 plays certain secondary water distribution and oxygenation function, and simultaneously concerning earthworm, sunshine can effectively reduce light intensity after the absorption of plastic optical fibre packing layer 6, refraction, reflection; Its shading rate has reached 68.8 ~ 87.4%; Make earthworm avoid ultraviolet infringement, in addition, the waterpower shock absorption of plastic optical fibre packing layer 6 also makes earthworm effectively avoid the mechanical wounding of sluicing.
In addition, in this embodiment, filter tank 1 is a steel design, diameter 1.8m, and high 2.45m, and the height of upper strata filtrate 2 is 0.45m, and the height of lower floor's filtrate 3 is 1.5m, and earthworm 4 is all rendered in the filtrate of upper strata, breeding growth in upper strata filtrate 2.When regulating the water shortage in filter tank 1, in the circulation well, replenish entry, to guarantee the activity of earthworm 4 in the filter tank 1 by recycle pump.Lower floor's filtrate 3 can be held back the minority earthworm 4 that from upper strata filtrate 2, falls down, with the dead effluent quality that rots to influence behind the earthworm 4 entering drained zones under avoiding dropping.The utility model is in operational process; The microbial film mud that comes off in the equalizing tank biological treatment process of leading portion is evenly distributed in the upper strata filtrate 2 through water distributor 5 with sewage; Earthworm 4 is consumer organism film mud in upper strata filtrate 2, changes it into earthworm excrement and get into the drained zone with water outlet, and the mud that carries in the water outlet is main with the earthworm excrement mainly; At the bottom of the drained zone was settled down to the pond rapidly, supernatant was discharged through the riser on draining top.
The utility model has been removed most suspended substance (SS) through ceramic filter material; Be the functional area that organic pollutant is decomposed, also play a part to hold back suspended matter, in the filter tank 1 because the introducing of earthworm 4; The SS that holds back is prevented that by earthworm 4 digestion filter tank 1 is because of the blocked problem of long-time running.Ceramic grain filter is the carrier that microbial film is depended on for existence simultaneously, and WWT is played further Water purification.
Adopt Worm biological filter tank to handle town domestic sewage, the control organic loading is in 0.47 ~ 0.79kgBOD
5/ m
3D, when hydraulic detention time is controlled at 8 ~ 10h, treat the utility model steady running after, the utility model is to COD, NH
4 +The clearance of-N, TP and SS reaches 70.01%, 73.44% and 51.58% respectively, water outlet COD, NH
4 +-N and TN can reach " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) secondary standard basically, the about 0.47 yuan/m of processing cost
3
The foregoing description does not limit the utility model in any form, and all employings are equal to the technical scheme that mode obtained of replacement or equivalent transformation, all drop in the protection domain of the utility model.
Claims (6)
1. a biological earthworm filter tank comprises the filter tank, and described filter tank comprises water distribution zone, filtrate district and drained zone from top to bottom successively; Described water distribution zone is provided with water distributor; Described filtrate district is provided with filter bed, it is characterized in that, the filtrate of described filter bed is a haydite; And two-layer about being provided with, it also is provided with earthworm in filtrate at the middle and upper levels.
2. a kind of biological earthworm according to claim 1 filter tank is characterized in that the porosity of described haydite is more than 40%.
3. a kind of biological earthworm according to claim 1 filter tank is characterized in that the top of described upper strata filtrate also is provided with the plastic optical fibre packing layer.
4. a kind of biological earthworm according to claim 3 filter tank is characterized in that the porosity of described plastic optical fibre packing layer is more than 96%.
5. a kind of biological earthworm according to claim 3 filter tank is characterized in that the surface distance 0.2 ~ 0.3m of described water distributor and plastic optical fibre packing layer.
6. a kind of biological earthworm according to claim 1 filter tank is characterized in that described water distributor is rotary water distributor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202830323U CN202610036U (en) | 2012-06-15 | 2012-06-15 | Biological earthworm filtering basin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202830323U CN202610036U (en) | 2012-06-15 | 2012-06-15 | Biological earthworm filtering basin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202610036U true CN202610036U (en) | 2012-12-19 |
Family
ID=47343751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202830323U Expired - Fee Related CN202610036U (en) | 2012-06-15 | 2012-06-15 | Biological earthworm filtering basin |
Country Status (1)
| Country | Link |
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| CN (1) | CN202610036U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110228899A (en) * | 2019-05-13 | 2019-09-13 | 浙江大东吴集团建设有限公司 | A kind of ecology water treatment system |
| CN112778032A (en) * | 2021-01-22 | 2021-05-11 | 哈尔滨工业大学 | Worm bed septic tank |
-
2012
- 2012-06-15 CN CN2012202830323U patent/CN202610036U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110228899A (en) * | 2019-05-13 | 2019-09-13 | 浙江大东吴集团建设有限公司 | A kind of ecology water treatment system |
| CN112778032A (en) * | 2021-01-22 | 2021-05-11 | 哈尔滨工业大学 | Worm bed septic tank |
| CN112778032B (en) * | 2021-01-22 | 2022-04-15 | 哈尔滨工业大学 | Worm bed septic tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 210014 Ziyun Road, Qinhuai District, Jiangsu, No. 9, No. Patentee after: CHINA DESIGN GROUP Co.,Ltd. Address before: 210005 Zhongshan South Road, Jiangsu, No. 342, No. Patentee before: Jiangsu Provincial Communications Planning and Design Institute Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20210615 |