CN1128110C - Physiological microbe-earthworm filter pool system for treating household sewage - Google Patents
Physiological microbe-earthworm filter pool system for treating household sewage Download PDFInfo
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- CN1128110C CN1128110C CN 00115433 CN00115433A CN1128110C CN 1128110 C CN1128110 C CN 1128110C CN 00115433 CN00115433 CN 00115433 CN 00115433 A CN00115433 A CN 00115433A CN 1128110 C CN1128110 C CN 1128110C
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- earthworm
- microbe
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Abstract
The present invention relates to a water treatment system of a microorganism-earthworm ecological filter pond for household sewage, which is composed of grids, an aerated grit chamber, a microorganism-earthworm filter pond and a water distributor. Because the microorganism-earthworm filter pond conforming to the ecological compositions and food chain connection is used, under the condition of the same area load, compared with the prior art, the process of the whole sewage treatment system is simplified. Thus, the sewage treatment system can be continuously operated for a long term under a productivity condition, and the phenomena of blockage, bad smell generation, fly ash breeding and secondary pollution can not occur. Compared with the existing sewage treatment system with an ordinary biological filter pond, the construction cost of the present invention is only 40% of that of the existing sewage treatment system, running cost is from 50% to 67%, and generated excess sludge is only 10%.
Description
The physiological microbe-earthworm filter pool system for treating household of sanitary sewage relates to and adopts ecological method to carry out water treatment to sanitary sewage.
Existing sanitary sewage ordinary biofilter water treatment system has grid usually, aerated grit chamber, and preliminary sedimentation tank, distributing well, the biological filter, secondary sedimentation basins constitutes.Sanitary sewage removes the particulate state foreign material through grid and aerated grit chamber and the laggard preliminary sedimentation tank of body refuse continues precipitation process, enters the biological filter then and carries out qualified discharge after biochemical treatment and the secondary sedimentation basins precipitation process.Because system is the main microbiological deterioration organic pollutant that relies in water treatment system, therefore the biological filter filler with bigger serface that adopts rubble, cobble, coke, slag or plastics to make makes the biological filter abundant microorganism that can grow carry out water treatment more.Though this biological filter has the advantage of saving power and simple and convenient management, but in the biological degradation organic pollutant, produce mud, and the biological filter takes place easily to be stopped up, distribute foul smell and multiply grey fly, worsened surrounding environment, and the expense of the fabrication cost of total system and plastic filler is higher, has influenced applying of this technology.
Only rely on action of microorganisms to carry out the situation of sanitary sewage disposal at existing, the someone proposes to use ecological rule to carry out sewage disposal in recent years, and has done a little experimental studies, but does not still have so far successfully and the report of application.
The objective of the invention is to; Provide a kind of ecological rule that meets to adopt forming the physiological microbe-earthworm filter tank that food chain connects, can non-stop run under the productivity condition, construction cost is low, management and domestic sewage processing system easy and simple to handle.
System of the present invention mainly contains grid, aerated grit chamber, and physiological microbe-earthworm filter tank and water-distributing device are formed.Two-layer about dividing in each physiological microbe-earthworm filter tank, the upper strata is the microbe-earthworm working lining, and lower floor is supporting course and ventilating layer.As the work packing layer, filler adopts wood chip and wood fragments or wood chip and light ceramic or peat and light ceramic in the bottom of physiological microbe-earthworm working lining.Wherein the weight percent of wood chip and wood fragments is:
Wood chip 75%～90%, wood fragments 25%～10%.
Total amount is 100% weight percent.
Perhaps the weight percent of wood chip or peat and light ceramic is,
Wood chip or peat 80%～95%, light ceramic 20%～5%.
Total amount is 100% weight percent.
The top of microbe-earthworm working lining is ecological working lining, and thickness is 40mm～60mm.Ecological working lining is by fiber substance, animal excrement, and wood chip and earthworm mix and constitute.Fiber substance wherein, animal excrement, the weight percent of wood chip is respectively:
Fiber substance 35%～45%
Animal excrement 30%～25%
Wood chip 35%～30%
Total amount is 100% weight percent.
Earthworm by 1000～2000 every square metre with above-mentioned mixing of materials together.
It is the rubble of 30～100mm that filler in supporting and ventilating layer adopts particle diameter, and last, big particle diameter rubble is stacked in following mode according to the small particle size rubble; Also can adopt the plastic wire of mesh 2mm * 2mm to make supporting course.
The physiological microbe-earthworm filter tank can be adopted the water distribution system that several fixed nozzles are formed is set in a filter tank, to filter tank water distribution uniformity off and on, also can adopt portable rotation water distributing system to the filter tank water distribution.
Sanitary sewage after grid, aerated grit chamber are removed block and silt directly by water distribution system at physiological microbe-earthworm filter tank water distribution.During in water temperature 〉=8 ℃, the clearance of the BOD in the sanitary sewage＞90%, the clearance of nitrogen＞50%, the clearance of phosphorus are 20%～30%.When water temperature＜8 ℃, because earthworm is in the part dormant state, the BOD clearance in this moment sewage still can remain on＞90%, but the clearance of nitrogen, phosphorus below 20%, effluent quality reaches directly emission standard.
The invention has the advantages that: under the equal area load, owing to adopted the physiological microbe-earthworm filter tank to make the flow process of entire sewage treatment system simplify than prior art, operation and management are also simple and can not stop up in long-time running, produce foul smell, multiply grey fly, the annual earthworm that only needs 1～2 cleaning filter tank a spot of earthworm excrement in surface and propagation.Construction cost is 40% of an existing Sewage treatment systems, working cost is 50%～67% of an existing ordinary biofilter Sewage treatment systems, the surplus sludge volume that produces only is 10% of an existing Sewage treatment systems, and the quality of mud is good, contain earthworm in the mud, after collecting, can directly deliver to the farmland and fertilize the soil and improve the soil.
Accompanying drawing is an embodiment of the invention synoptic diagram, wherein;
Fig. 1. be system works synoptic diagram of the present invention,
Fig. 2. be to adopt wood chip and wood fragments physiological microbe-earthworm filter tank diagrammatic cross-section among Fig. 1 as biologic packing material.
Fig. 3. be to adopt wood chip and light ceramic physiological microbe-earthworm filter tank diagrammatic cross-section among Fig. 1 as biologic packing material.
Now the invention will be further described in conjunction with above-mentioned accompanying drawing.
Sewage treatment systems of the present invention is by grid 1, and aerated grit chamber 2, physiological microbe-earthworm filter tank 3 compositions, sanitary sewage are through grid 1, and aerated grit chamber 2 is handled the body refuse 4 of back collection by landfill disposal.Sewage directly spreads to physiological microbe-earthworm filter tank 3 by water distribution system and carries out the physiological microbe-earthworm processing, and water outlet can directly be discharged, and delivers to the farmland after the earthworm 5 of earthworm excrement and propagation is collected.Physiological microbe-earthworm filter tank 3 is by the cloth water spouting nozzle 6 that is embedded in the filter tank, physiological microbe-earthworm working lining 7, and wood chip and wood fragments piece packing layer 8 or wood chip and light ceramic or peat and light ceramic packing layer 11, supporting course 9 and ventilating layer 10 constitute.
Embodiment one
In the physiological microbe-earthworm filter tank, adopt wood chip 80% weight percent, wood fragments 20% weight percent is as work packing layer 8; Paper fiber 35% weight percent, cow dung 30% weight percent, wood chip 35% weight percent adds 1500 earthworms with the mixed back of water-soaked by every square metre and mixes as physiological microbe-earthworm working lining 3.It is the rubble of 30～100mm that filler in supporting course 9 and the ventilating layer 10 adopts particle diameter, and last, big particle diameter rubble is stacked in following mode according to the small particle size rubble.Employing be embedded in the filter tank nozzle evenly, water distribution manner water distribution intermittently, sewage area load is 1.5m
3/ m
2.d descend the BODs clearance greater than 90%, nitrogen removal efficiency is greater than 50%, and tp removal rate is below 30%.
Embodiment two
In the physiological microbe-earthworm filter tank, adopt peat 80% weight percent, haydite 20% weight percent is as work packing layer 11, paper fiber 40% weight percent, cow dung 30% weight percent, wood chip 30% weight percent adds 2000 earthworms with the mixed back of water-soaked by every square metre and mixes as physiological microbe-earthworm working lining 3.It is the rubble of 30～100mm that filler in supporting course 9 and the ventilating layer 10 adopts particle diameter, and last, big particle diameter rubble is stacked in following mode according to the small particle size rubble.Adopt the perforated pipe water distribution manner, be 1.5m at sewage area load
3/ m
2.d the time.
The water treatment effect of embodiment one and embodiment two is as follows:
Unit: mg/L
| Project | Water temperature | COD cr | BOD s | SS | TN | TP |
| Water inlet | ＞4℃ | 360～420 | 180～210 | 150～200 | 30～50 | 6～10 |
| Water outlet | ＞25℃ | 30～65 | 5～10 | ＜10 | 10～40 | 5～10 |
| | 8～25 | 20～55 | 4～10 | ＜8 | 5～20 | 5～9 |
| Water outlet | ＜8℃ | 35～70 | 5～15 | ＜10 | 10～40 | 6～10 |
Embodiment three
In the physiological microbe-earthworm filter tank. adopt peat 90% weight percent, haydite 10% weight percent is as work packing layer 11, paper fiber 35% weight percent, cow dung 30% weight percent, wood chip 35% weight percent adds 2000 earthworms with the mixed back of water-soaked by every square metre and mixes as the physiological microbe-earthworm working lining.It is the rubble of 30～100mm that filler in supporting course 9 and the ventilating layer 10 adopts particle diameter, and last, big particle diameter rubble is stacked in following mode according to the small particle size rubble.Employing be embedded in the filter tank nozzle evenly, water distribution manner water distribution intermittently, sewage area load is 1.0m
3/ m
2.d descend the BOD5 clearance greater than 95%, nitrogen removal efficiency is greater than 55%, and tp removal rate is 30%.
Embodiment four
In the physiological microbe-earthworm filter tank, adopt wood chip 95% weight percent, wood fragments 5% weight percent is as work packing layer 8, paper fiber 40% weight percent, cow dung 25% weight percent, peat 35% weight percent, adopting particle diameter by 2000 earthworms mixing of every square metre of adding as the filler in ecological working lining 3. supporting courses 9 of physiological microbe-earthworm and the ventilating layer 10 with the mixed back of water-soaked is the rubble of 30～100mm, according to the small particle size rubble last, big particle diameter rubble is stacked in following mode. and adopt the perforated pipe water distribution manner, be 1.0m at sewage area load
3/ m
2.d the time,
The water treatment effect of embodiment three and embodiment four is as follows:
Unit: mg/L
| Project | Water temperature | COD cr | BOD s | SS | TN | TP |
| Water inlet | ＞4℃ | 360～420 | 180～210 | 150～200 | 30～50 | 6～10 |
| Water outlet | ＞25℃ | 30～60 | 4～10 | ＜10 | 10～40 | 5～10 |
| | 8～25 | 20～50 | 4～8 | ＜8 | 8～20 | 5～8 |
| Water outlet | ＜8℃ | 35～70 | 5～10 | ＜10 | 20～45 | 6～10 |
Claims (2)
1. the physiological microbe-earthworm filter pool system for treating household of sanitary sewage is characterized in that; Water treatment system is by grid (1), aerated grit chamber (2), microbe-earthworm filter tank (3) and water-distributing device (6) are formed, and wherein microbe-earthworm filter tank (3) set gradually ventilating layer (10), supporting course (9), work packing layer (8), physiological microbe-earthworm working lining (7) formation from bottom to up.
2. according to the said water treatment system of claim 1, it is characterized in that physiological microbe-earthworm working lining (7) in the microbe-earthworm filter tank (3) by fiber substance, animal excrement, wood chip or peat as following weight percent:
Fiber substance 35%～45%
Animal excrement 30%～25%
Wood chip or peat 35%～30%
Total amount is 100% weight percent;
Earthworm is pressed 1000～2000 every square metre and fiber substance, animal excrement, and wood chip or peat mix formation;
Filler in the work packing layer (8) or (11) adopts wood chip and wood fragments or wood chip and light ceramic or peat and light ceramic formation, and the weight percent of wood chip and wood fragments is:
Wood chip 75%～90% wood fragments 25%～10%
Total amount is 100% weight percent;
The weight percent of wood chip or peat and light ceramic is:
Wood chip or peat 80%～95% light ceramic 20%～5%
Total amount is 100% weight percent;
Last, stack in following mode by big particle diameter rubble according to the small particle size rubble for the rubble of filler employing 30mm～100mm in supporting course (9) and the ventilating layer (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00115433 CN1128110C (en) | 2000-04-25 | 2000-04-25 | Physiological microbe-earthworm filter pool system for treating household sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00115433 CN1128110C (en) | 2000-04-25 | 2000-04-25 | Physiological microbe-earthworm filter pool system for treating household sewage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1320568A CN1320568A (en) | 2001-11-07 |
| CN1128110C true CN1128110C (en) | 2003-11-19 |
Family
ID=4584880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00115433 Expired - Fee Related CN1128110C (en) | 2000-04-25 | 2000-04-25 | Physiological microbe-earthworm filter pool system for treating household sewage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100484895C (en) * | 2007-04-25 | 2009-05-06 | 上海大学 | Method for treating sludge by earthwork stacking |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357198C (en) * | 2006-04-20 | 2007-12-26 | 上海交通大学 | Water distribution method for earthworm biofilter |
| CN100441525C (en) * | 2006-04-20 | 2008-12-10 | 上海交通大学 | Method for preparing filtration material for earthworm biofilter |
| CN101348315B (en) * | 2008-09-02 | 2010-06-16 | 同济大学 | Method for processing excess sludge of town sewage plant using angleworm bio-filter |
| CN101580331B (en) * | 2009-06-25 | 2011-05-25 | 浙江工商大学 | Tubificidae-microorganism symbiotic system muddy water degradation continuous flow reactor and application thereof |
| CN101698552B (en) * | 2009-11-09 | 2012-08-29 | 南京大学 | Method for treating domestic sewage with reinforced capillary infiltration trench system |
-
2000
- 2000-04-25 CN CN 00115433 patent/CN1128110C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100484895C (en) * | 2007-04-25 | 2009-05-06 | 上海大学 | Method for treating sludge by earthwork stacking |
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| Publication number | Publication date |
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| CN1320568A (en) | 2001-11-07 |
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