CN106869301B - Old residential quarters septic tank cleaning method - Google Patents
Old residential quarters septic tank cleaning method Download PDFInfo
- Publication number
- CN106869301B CN106869301B CN201710169190.3A CN201710169190A CN106869301B CN 106869301 B CN106869301 B CN 106869301B CN 201710169190 A CN201710169190 A CN 201710169190A CN 106869301 B CN106869301 B CN 106869301B
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- China
- Prior art keywords
- septic tank
- clearly
- pipeline
- branch line
- inspection shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F9/00—Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of old residential quarters septic tank cleaning method, belong to septic tank Removal Technology field, one, using all septic tanks of the outlet upstream of each access municipal drainage pipeline of cell, sewage conduct, inspection shaft as one draw unit clearly.Two, firstly, round dedicated cage tool is made, for stopping the sludge and sundries of septic tank.Three, verification cell each draws clearly unit, and verification each draws clearly unit septic tank towards the overlapping draining branch line of municipal sewage pipeline outlet；When each drawing first septic tank cleaning in unit upstream clearly, the inspection shaft one and next inspection shaft two drawn clearly needed for two cage tools are individually positioned in easy portal frame；Clear up septic tank floating material hard shell, it will draw clearly that septic tank top 500mm or so hard shell is hammered into shape with dedicated cone or drill rod smashes, and be pulled out from septic tank inspection shaft with specific purpose tool, be placed on and contain in mud groove and cover, it is transported to specified discharge sites in time, prevents dirt contamination environment.
Description
Technical field
The present invention relates to a kind of old residential quarters septic tank cleaning methods, belong to septic tank Removal Technology field.
Background technique
Phenomena such as emitting, is run in old residential quarters septic tank and sewage conduct blocking, is always the maintenance of puzzlement drainage system, dimension
The problem that nurse makees.Due to manually drawing clearly there are high risk sexual, and expense is larger, so septic tank, sewage conduct and inspection
Well cannot be drawn and safeguard clearly for a long time from after house lead in, and some old residential areas were not drawn clearly up to 30 years, frequent occurrence sewage edgeization
Manure pit and sewage conduct manhole cover are excessive, seriously affect resident's normal life, cell majority septic tank is for a long time along inspection shaft
Excessive, the hard shell of thickness 500mm or so is formed at septic tank top.Water level is high in cell part of contaminated water pipeline, mostly
The sewage water surface of number inspection shaft within 500mm, if sewage conduct is locally unsmooth, sewage occurs at any time and overflows from well lid away from well lid
Out.The inspection shaft of part septic tank and sewage conduct is buried in underground for many years, and some is covered by mattess.In cell
All septic tanks are full of deposit and dirt, lose function substantially；Sewage conduct sludge quantity is above 1/2 or more caliber, checks
All there are the sundries such as a large amount of sludge brickbat in well.
Emit equal producing causes analysis is run in old residential quarters septic tank and sewage conduct blocking:
When community wastewater pipe-line construction, the tubing and construction quality of use are unqualified, and after many years use, pipeline generation is collapsed
Pipe, mismatch, some Pipe installing adverse slopes are used for a long time at adverse slope and generate siltation.
When cell environment is built, to cesspool cover unattended, construction machinery destroys sewage inspection well, rubbish and brickbat
Inspection shaft is fallen into, cleaning is not in place, and inspection shaft internal drainage has some setbacks for a long time.
When having cell portion hardened ground, septic tank and sewage conduct inspection shaft are directly hardened under road surface, in cell
Partially self bicycle shed and temporary building account for the outer septic tank of pressure chamber and sewage inspection well, conventional maintenance for a long time and cannot be guaranteed.
Tenement in cell septic tank and sewage conduct not by clearly draw the period carry out regular system draw clearly.Septic tank
Interior protection volume failure, dirt are directly entered pipeline and cause more serious siltation.
Bottom of residential building change purposes opens up restaurant in cell, and a large amount of greasy dirts in restaurant flow into sewage conduct for a long time, cause dirt
Waterpipe and septic tank blocking.
Summary of the invention
In order to overcome above-mentioned technical deficiency, the present invention provides a kind of old residential quarters septic tank cleaning method, should
Old residential quarters septic tank cleaning method can effectively solve existing old residential area septic tank, sewage conduct is clearly drawn and cleaning is asked
Topic.
The technical solution adopted by the present invention to solve the technical problems is: old residential quarters septic tank cleaning method:
Old residential area septic tank, sewage conduct investigation are refined first:
Investigation sequence: draining branch line Chong Die with the upstream community wastewater of municipal drainage pipeline outlet goes out towards urban pipeline
Shared draining branch line → septic tank downstream line investigation → septic tank is checked → of mouth goes out family drainage pipeline investigation, i.e. septic tank point
Cloth, pipeline caliber, flow to, deposit mud amount, being checked with municipal drainage pipeline outlet position.
Formulate old residential quarters septic tank and sewage conduct blocking run emit clearly draw method construction procedure:
One, all septic tanks, sewage conduct, the inspection shaft of the outlet upstream of each access municipal drainage pipeline of cell are made
Unit is drawn clearly for one.
Each drawing unit clearly includes several septic tanks, pipeline, inspection shaft, by it is each draw unit clearly as unit of, from most upstream
First septic tank drawn clearly.
The sequence of construction of unit is each drawn clearly are as follows: the septic tank preceding pipeline → septic tank → downstream line of upstream first → small
Sewage overlapping in area's drains branch line i.e.: first septic tank cleaning from outlet most upstream, until second needs clear drawing excrement
The inspection shaft of pond downstream line draining branch line junction Chong Die with community wastewater, successively draws clearly.
Two, firstly, round dedicated cage tool is made, for stopping the sludge and sundries of septic tank.Dedicated cage tool production: skeleton
Vertical reinforcement is 8 reinforcing bars of φ 10, length 2100mm, and transverse steel ring is 6 reinforcing bar of φ, and it is 650mm that overall diameter, which is made, vertically
Reinforcing bar 1 is placed on the inside of transverse steel ring, and transverse steel interannular connects to form skeleton away from 300mm, vertical reinforcement and transverse steel boxing.
Skeleton top is respectively equipped with four hanging rings, along skeleton top equidistant placement, and with skeleton firm welding；1mm is used on the outside of skeleton
Thick steel plate net, mesh short pitch 18mm, long-pitch 50mm wind with one circuit along circular framework, and expanded metal lath lap width 50mm is taking
Place steel plate clamp jail is connect, expanded metal lath will be with skeleton entirety fixation.
Secondly, production simple gantry crane, placement and promotion for slush pump, Special cage；Make a height 2800mm,
Width 1500mm simple gantry crane.Crossbeam is 14# I-steel, and I-steel lower end is welded with two pack supports, is welded between every pack support
Cross supporting frame, is welded with oblique pull support frame between crossbeam and bracket, bracket uses DN125*5.5 steel pipe；It is equipped with and hangs among crossbeam
Hook device.
Three, verification cell each draws clearly unit, and verification each draws clearly unit septic tank towards the outlet of municipal sewage pipeline
Sewage overlapping draining branch line；Determine each septic tank, drainage pipeline one, inspection shaft one, inspection shaft two, draining branch line one, drainpipe
Road two, drainage pipeline three, draining two position of branch line, and the position of specific location and connection is drawn convenient for construction；It is whole to reduce cell
Body wastewater level, to the sundries of settled sludge carries out in all inspection shafts before and after cell septic tank and in sewage overlapping branch pipeline
Machinery is drawn clearly.It is preferably minimized the inspection Well Water Level of septic tank water level and cell, is drawn clearly convenient for the lower step of septic tank；Sewage conduct
After water level decreasing, sewage conduct before septic tank is drawn clearly with water jetting at high pressure vehicle, makes the pipeline residual object entrance of septic tank upstream
Manure pit.
When each drawing first septic tank cleaning in unit upstream clearly, two cage tools are individually positioned in easy portal frame
The required inspection shaft one and next inspection shaft two drawn clearly；
Clear up septic tank floating material hard shell, will draw clearly septic tank top 500mm or so hard shell hammered into shape with dedicated cone or
Drill rod smashes, and is pulled out from septic tank inspection shaft with specific purpose tool, is placed on and contains in mud groove and cover, is transported in time specified
Discharge sites prevent dirt contamination environment.
Septic tank is drawn clearly.6 cun of slush pumps are fixed using simple gantry crane, and slush pump are sent into septic tank, lifting pipe
It is connect with first inspection shaft of septic tank downstream line.It opens slush pump and falls sewerage and sludge to septic tank downstream line
Slurry.
Septic tank inner wall attachment is drawn clearly.When slush pump is cleared up substantially on earth, slush pump is taken out, with water jetting at high pressure vehicle to change
The stiff mud high-pressure wash that four wall of manure pit and bottom are formed for many years, then downstream line is poured into slush pump.
When septic tank pump drainage, the dedicated cage tool in two inspection shafts of sewage overlapping draining branch line will set special messenger's nurse, such as
When there is Special cage blocking, dedicated cage tool is hung out with simple gantry crane, tamper should be cleared up in time, the dirt of cleaning is put into
In sludge sump, and covers and transport.
Septic tank downstream drainage pipeline is drawn clearly.After complete 1-3 days of septic tank cleaning, dirt precipitates substantially in pipeline, opens
It is special to second, overlapping branch line segment to first septic tank downstream branch line is drawn clearly with first Special cage of Chong Die branch line junction
Machinery is carried out with pipeline between cage to draw clearly, and sludge is timely transported.Unit is each drawn clearly from branch line Chong Die with sewage connection
Trip is successively downstream drawn clearly, and municipal drainage pipeline outlet is gradually arrived, and draws that program is simple and direct, cost is lower clearly, and prevents cell branch line
Sludge is discharged into municipal drainage pipeline.
The beneficial effects of the present invention are: drawing clearly, program is simple and direct, reasonable, and cost is lower, and personal injury accident will not occur；It is anti-
Only cell branch line sludge is discharged into municipal drainage pipeline, fundamentally solve old residential quarters septic tank clearly draw with outside septic tank
Environmental pollution caused by overflowing.
Detailed description of the invention
The present invention is further described with reference to the accompanying drawings and detailed description.
Fig. 1 is that Special cage of the present invention is signed an undertaking composition.
Fig. 2 is gantry frame structure schematic diagram of the present invention.
Fig. 3 is septic tank cleaning route investigation schematic diagram of the present invention.
1, hanging ring in figure, 2, vertical reinforcement, 3, transverse steel ring, 4, expanded metal lath, 5, crossbeam, 6, bracket, 7, upper oblique pull branch
Support, 8, cross supporting frame, 9, septic tank, 10, drainage pipeline one, 11, inspection shaft one, 12, inspection shaft two, 13, draining branch line one,
14, drainage pipeline two, 15, drainage pipeline three, 16, draining branch line two.
Specific embodiment
Old residential quarters septic tank cleaning method:
Old residential area septic tank, sewage conduct investigation are refined first:
Investigation sequence: draining branch line Chong Die with the upstream community wastewater of municipal drainage pipeline interface goes out towards urban pipeline
Shared draining branch line → septic tank downstream line investigation → septic tank is checked → of mouth goes out drainage pipeline investigation in family i.e. septic tank point
Cloth, pipeline caliber, flow to, deposit mud amount, being checked with municipal drainage pipeline interface position.
It formulates old residential quarters septic tank and sewage conduct blocking runs to emit etc. and draws method construction procedure clearly:
One, all septic tanks, sewage conduct, the inspection shaft of the outlet upstream of each access municipal drainage pipeline of cell are made
Unit is drawn clearly for one.
Each drawing unit clearly includes several septic tanks, pipeline, inspection shaft, by it is each draw unit clearly as unit of, from most upstream
First septic tank drawn clearly.
The sequence of construction of unit is each drawn clearly are as follows: the septic tank preceding pipeline → septic tank → downstream line of upstream first → small
Sewage overlapping in area's drains branch line i.e.: first septic tank cleaning from outlet most upstream, until second needs clear drawing excrement
The inspection shaft of pond downstream line draining branch line junction Chong Die with community wastewater, successively draws clearly.
Two, firstly, round dedicated cage tool is made, for stopping the sludge and sundries of septic tank.Dedicated cage tool production: as schemed
Shown in 1, skeleton vertical reinforcement 2 is 8 reinforcing bars of φ 10, length 2100mm, and transverse steel ring 3 is 6 reinforcing bar of φ, and overall diameter is made
For 650mm, vertical reinforcement 2 is placed on 3 inside of transverse steel ring, 3 spacing 300mm of transverse steel ring, vertical reinforcement 2 and transverse steel
The welding of ring 3 forms skeleton.Skeleton top is respectively equipped with four hanging rings 1, welds jail along skeleton top equidistant placement, and with skeleton
Gu；1mm thick steel plate net 4 is used on the outside of skeleton, mesh short pitch 18mm, long-pitch 50mm wind with one circuit along circular framework, steel plate
4 lap width 50mm of net, in lap-joint steel plate clamp jail, expanded metal lath will be with skeleton entirety fixation.
Secondly, production simple gantry crane, placement and promotion for slush pump, Special cage；As shown in Fig. 2, production one
Height 2800mm, width 1500mm simple gantry crane.Crossbeam 5 is 14# I-steel, and I-steel lower end is welded with two pack supports 6, every group
It is welded with cross supporting frame 8 between bracket 6, oblique pull support frame 7 is welded between crossbeam 5 and bracket 6, bracket 6 uses DN125*5.5 steel
Pipe；Hook gear is equipped among crossbeam 5.
Three, verification cell each draws clearly unit, and verification each draws clearly unit septic tank towards the outlet of municipal sewage pipeline
Sewage overlapping draining branch line；As shown in figure 3, determine each septic tank 9, drainage pipeline 1, inspection shaft 1, inspection shaft 2 12,
Branch line 1, drainage pipeline 2 14, drainage pipeline 3 15, draining 2 16 position of branch line are drained, and draws specific location and connection
Position convenient for construction；Cell entirety wastewater level is reduced, in inspection shafts all before and after cell septic tank and sewage overlapping branch
The sundries progress machinery of settled sludge is drawn clearly in spool road.It is preferably minimized the inspection Well Water Level of septic tank water level and cell, just
It is drawn clearly in the lower step of septic tank；After sewage conduct water level decreasing, sewage conduct before septic tank is drawn clearly with water jetting at high pressure vehicle, making
The pipeline residual object of manure pit upstream enters septic tank.
When each drawing first septic tank cleaning in unit upstream clearly, two cage tools are individually positioned in easy portal frame
The required inspection shaft 1 and next inspection shaft 2 12 drawn clearly；Septic tank floating material hard shell is cleared up, septic tank will be drawn clearly
Top 500mm or so hard shell is hammered into shape with dedicated cone or drill rod smashes, and is pulled out from septic tank inspection shaft with specific purpose tool, places
It is containing in mud groove and is covering, be transported to specified discharge sites in time, prevent dirt contamination environment.
Septic tank is drawn clearly.6 cun of slush pumps are fixed using simple gantry crane, and slush pump are sent into septic tank, lifting pipe
It is connect with first inspection shaft of septic tank downstream line.It opens slush pump and falls sewerage and sludge to septic tank downstream line
Slurry.
Septic tank inner wall attachment is drawn clearly.When slush pump is cleared up substantially on earth, slush pump is taken out, with water jetting at high pressure vehicle to change
The stiff mud high-pressure wash that four wall of manure pit and bottom are formed for many years, then downstream line is poured into slush pump.
When septic tank pump drainage, the dedicated cage tool in two inspection shafts of sewage overlapping draining branch line will set special messenger's nurse, such as
When there is Special cage blocking, dedicated cage tool is hung out with simple gantry crane, tamper should be cleared up in time, the dirt of cleaning is put into
In sludge sump, and covers and transport.
Septic tank downstream drainage pipeline is drawn clearly.After complete 1-3 days of septic tank cleaning, dirt precipitates substantially in pipeline, opens
It is special to second, overlapping branch line segment to first septic tank downstream branch line is drawn clearly with first Special cage of Chong Die branch line junction
Machinery is carried out with pipeline between cage to draw clearly, and sludge is timely transported.Unit is each drawn clearly from branch line Chong Die with sewage connection
Trip is successively downstream drawn clearly, and municipal drainage pipeline interface is gradually arrived, and draws that program is simple and direct, cost is lower clearly, and prevents cell branch line
Sludge is discharged into municipal drainage pipeline.
Claims (2)
1. a kind of old residential quarters septic tank cleaning method, including dedicated cage tool, portal frame, it is characterised in that:
Old residential area septic tank, sewage conduct investigation are refined first:
Investigation sequence: draining branch line Chong Die with the upstream community wastewater of municipal drainage pipeline outlet is to lead to urban pipeline outlet
It shares draining branch line → septic tank downstream line investigation → septic tank is checked → and goes out family drainage pipeline investigation, i.e., from septic tank point
Cloth, pipeline caliber, flow to, deposit mud amount, being checked with municipal drainage pipeline outlet position；
Formulate old residential quarters septic tank and sewage conduct blocking run emit clearly draw method construction procedure:
One, using all septic tanks of the outlet upstream of each access municipal drainage pipeline of cell, sewage conduct, inspection shaft as one
It is a to draw unit clearly；
Each drawing unit clearly includes several septic tanks, pipeline, inspection shaft, by it is each draw unit clearly as unit of, from the of most upstream
One septic tank is drawn clearly；
The sequence of construction of unit is each drawn clearly are as follows: the septic tank preceding pipeline → septic tank → downstream line of upstream first → cell is dirty
Water overlapping drains branch line i.e.: first septic tank cleaning from outlet most upstream, until second needs is drawn under septic tank clearly
The inspection shaft of play pipe road draining branch line junction Chong Die with community wastewater, successively draws clearly；
Two, the round dedicated cage tool of production and portal frame, for stopping the sludge and sundries of septic tank；
Three, verification cell each draws clearly unit, and the sewage that unit septic tank leads to the outlet of municipal sewage pipeline is each drawn clearly in verification
Overlapping draining branch line；Determine each septic tank (9), drainage pipeline one (10), inspection shaft one (11), inspection shaft two (12), draining branch
Line one (13), drainage pipeline two (14), drainage pipeline three (15), draining branch line two (16) position, and draw specific location and connection
Logical position is convenient for construction；Cell entirety wastewater level is reduced, in inspection shafts all before and after cell septic tank and sewage is overlapped
The sundries progress machinery of settled sludge is drawn clearly in branch pipeline；It is preferably minimized the inspection Well Water Level of septic tank water level and cell,
It is drawn clearly convenient for the lower step of septic tank；After sewage conduct water level decreasing, sewage conduct before septic tank is drawn clearly with water jetting at high pressure vehicle, is made
The pipeline residual object of septic tank upstream enters septic tank；
When each drawing first septic tank cleaning in unit upstream clearly, needed for two cage tools are individually positioned in easy portal frame
The inspection shaft one (11) and next inspection shaft two (12) drawn clearly；Septic tank floating material hard shell is cleared up, septic tank will be drawn clearly
Top 500mm or so hard shell is hammered into shape with dedicated cone or drill rod smashes, and is pulled out from septic tank inspection shaft with specific purpose tool, places
It is containing in mud groove and is covering, be transported to specified discharge sites in time, prevent dirt contamination environment；
Septic tank is drawn clearly；6 cun of slush pumps are fixed using simple gantry crane, and slush pump is sent into septic tank, lifting pipe and change
First inspection shaft of manure pit downstream line connects；It opens slush pump and falls sewerage and sludge slurry to septic tank downstream line；
Septic tank inner wall attachment is drawn clearly；When slush pump is cleared up substantially on earth, slush pump is taken out, with water jetting at high pressure vehicle to septic tank
The stiff mud high-pressure wash that four walls and bottom are formed for many years, then downstream line is poured into slush pump；
When septic tank pump drainage, the dedicated cage tool in two inspection shafts of sewage overlapping draining branch line will set special messenger's nurse, such as occur
When Special cage blocks, dedicated cage tool is hung out with simple gantry crane, tamper should be cleared up in time, the dirt of cleaning is put into sludge
In slot, and covers and transport；
Septic tank downstream drainage pipeline is drawn clearly；After complete 1-3 days of septic tank cleaning, dirt precipitates substantially in pipeline, open with again
First Special cage of folded branch line junction draws first septic tank downstream branch line to overlapping second Special cage of branch line segment to clear
Between pipeline carry out machinery and draw clearly, and sludge is timely transported；Each draw clearly unit from branch line Chong Die with sewage connect upstream according to
It is secondary downstream to draw clearly, municipal drainage pipeline outlet is gradually arrived, draws that program is simple and direct, cost is lower clearly, and prevents cell branch line sludge
It is discharged into municipal drainage pipeline.
2. a kind of old residential quarters septic tank cleaning method according to claim 1, it is characterized in that: dedicated cage tool system
Make: skeleton vertical reinforcement (2) is 8 reinforcing bars of φ 10, length 2100mm, and transverse steel ring (3) is 6 reinforcing bar of φ, is made outer straight
Diameter is 650mm, and vertical reinforcement (2) is placed on the inside of transverse steel ring (3), transverse steel ring (3) spacing 300mm, vertical reinforcement (2)
Skeleton is formed with transverse steel ring (3) welding；Skeleton top is respectively equipped with four hanging rings (1), along skeleton top equidistant placement, and
With skeleton firm welding；1mm thick steel plate net (4) is used on the outside of skeleton, mesh short pitch 18mm, long-pitch 50mm are along circular framework
It winds with one circuit, expanded metal lath (4) lap width 50mm, in lap-joint steel plate clamp jail, expanded metal lath will be with skeleton entirety fixation；
Make simple gantry crane, placement and promotion for slush pump, Special cage；Make height 2800mm, a width
1500mm simple gantry crane；Crossbeam (5) is 14# I-steel, and I-steel lower end is welded with two pack supports (6), between every pack support (6)
It is welded with cross supporting frame (8), is welded between crossbeam (5) and bracket (6) oblique pull support frame (7), bracket (6) uses DN125*5.5
Steel pipe；Hook gear is equipped among crossbeam (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710169190.3A CN106869301B (en) | 2017-03-21 | 2017-03-21 | Old residential quarters septic tank cleaning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710169190.3A CN106869301B (en) | 2017-03-21 | 2017-03-21 | Old residential quarters septic tank cleaning method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106869301A CN106869301A (en) | 2017-06-20 |
| CN106869301B true CN106869301B (en) | 2019-03-29 |
Family
ID=59171759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710169190.3A Expired - Fee Related CN106869301B (en) | 2017-03-21 | 2017-03-21 | Old residential quarters septic tank cleaning method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106869301B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108487448A (en) * | 2018-05-14 | 2018-09-04 | 南通富海环保设备有限公司 | A kind of coprodaecum dredging cleaning plant |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2797650B1 (en) * | 1999-08-18 | 2002-06-07 | Eparco Sa | FLOAT FOR SEPTIC TANK |
| CN101864802A (en) * | 2009-12-11 | 2010-10-20 | 贵州威尔森环保生物工程有限公司 | Sludge and septic tank cleaning equipment |
| CN104817242A (en) * | 2015-05-05 | 2015-08-05 | 赵峰 | Absorption treatment method for municipal scattered sludge |
| CN105540281B (en) * | 2016-02-03 | 2018-02-06 | 厦门大学嘉庚学院 | Helical feed formula septic tank cleaning device and septic tank method for cleaning |
-
2017
- 2017-03-21 CN CN201710169190.3A patent/CN106869301B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN106869301A (en) | 2017-06-20 |
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Granted publication date: 20190329 Termination date: 20210321 |