CN106746376A - A kind of valveless rapid sand filter advanced treating buried integrated sewage processing method - Google Patents
A kind of valveless rapid sand filter advanced treating buried integrated sewage processing method Download PDFInfo
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- CN106746376A CN106746376A CN201710142276.7A CN201710142276A CN106746376A CN 106746376 A CN106746376 A CN 106746376A CN 201710142276 A CN201710142276 A CN 201710142276A CN 106746376 A CN106746376 A CN 106746376A
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- pond
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- sand filter
- clear water
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
- B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
- B01D24/12—Downward filtration, the filtering material being supported by pervious surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4631—Counter-current flushing, e.g. by air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2101/00—Types of filters having loose filtering material
- B01D2101/04—Sand or gravel filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Filtration Of Liquid (AREA)
Abstract
A kind of valveless rapid sand filter advanced treating buried integrated sewage processing method, including following methods：By grid pond, collecting-tank, regulating reservoir, anoxic pond, Aerobic Pond, second pond, sand filter and clear water reserviors are arranged on below ground surface, the Chi Kou of grid pond is flushed with ground surface, it is easy into water, collecting-tank elevator pump is installed in collecting-tank bottom, regulating reservoir bottom is installed by regulating reservoir regulating reservoir elevator pump, ejector is installed in Aerobic Pond, tube settling disk is installed in the middle part of second pond, sand considers pond includes filtering area and clear water zone, filtering area inner bottom part sets distributing main, distributing main is located in supporting layer, supporting layer top is filter material layer, sand filter used need not be respectively provided with clear water flowing water Valve and back flush valves, one is relatively large in diameter pipeline and makees backwash water pipe, this pipeline is using the difference of the backwash water of sand filter and treatment water as design discharge, check-valves is installed on backwash water pipe.
Description
Technical field
It is a kind of valveless rapid sand filter advanced treating buried integrated sewage treatment side the present invention relates to sewage disposal
Method.
Background technology
Sand filter is generally used for the advanced treating of sewage, to solve the exceeded difficulty of suspension in two stage biological treatment water outlet
Topic, and, it is necessary to be installed in pond for drainage and recoil when in buried integrated sewage system using existing sand filter
The switch valve of two states is washed, height of the valve apart from ground is general at 2-2.5 meters, and this is just to the management of sewage disposal system
Very big inconvenience is brought with operation.Many buried sewerages cannot use sand filter for this, or use high cost, complex structure
Decontamination pond substitute sand filtration effect, but, these methods bring masty new problem, cause underground sewage disposal system system
The shedding quality of system is relatively inaccessible to treatment standard.
The content of the invention
It is an object of the invention to provide a kind of valveless rapid sand filter advanced treating buried integrated sewage processing method,
Sand filter is used in underground sewage disposal system system, it is combined with various sewage disposal devices, reach high standard after sewage filter
Accurate requirement.
The present invention to achieve the above object, by the following technical programs：A kind of valveless rapid sand filter advanced treating is buried
Formula integral sewage disposal process, including following methods：
1. grid pond, collecting-tank, regulating reservoir, anoxic pond, Aerobic Pond, second pond, sand filter and clear water reserviors are arranged on ground surface
Hereinafter, the Chi Kou of grid pond is flushed with ground surface, is easy into water, and other each ponds open up blow vent；
2. collecting-tank elevator pump is installed in collecting-tank bottom, regulating reservoir regulating reservoir elevator pump is installed in regulating reservoir bottom, in Aerobic Pond
Ejector is installed, tube settling disk is installed in the middle part of second pond, second pond bottom is respectively mounted jet pump and mixed liquor and sludge
Mechanical grille is set in reflux pump, grid pond；
3. sand considers pond includes filtering area and clear water zone, and filtering area inner bottom part sets distributing main, and distributing main is located in supporting layer,
Supporting layer top is filter material layer, and filter material layer top sets water inlet pipe, water layer on the Shi Sha faces of water inlet pipe top, distributing main one end with
The lower end for rinsing supply mains is connected, and distributing main is in parallel with wash tub pipe and clear water pipe, and its attachment structure is to rinse supply mains
Upper end is connected with wash tub pipe one end, is connected with outlet pipe after the other end bending downwards of wash tub pipe, rinses the upper of supply mains
End is connected with clear water pipe simultaneously, is connected with outlet pipe after the bending downwards of the clear water pipe other end, and outlet pipe is connected with flush water pump, punching
Check-valves is installed on wash water pipe；
4. sewage first passes around mechanical grille and collecting-tank will be flowed into after big floating object and suspended substance removal, then uses collecting-tank elevator pump
Sent into regulating reservoir by pipeline, water is pumped into by pipeline with regulating reservoir elevator pump again by regulating pondage, balanced water quality scarce
Oxygen pond, while the returned sludge in second pond enters anoxic pond by mixed liquor and sludge reflux pump by mixed liquor pipeline, it is good
Nitrification liquid in oxygen pond enters anoxic pond by nitrification liquid reflux pump；
5. the sewage after 4. being processed through step enters Aerobic Pond by pipeline, carried out in Aerobic Pond the biodegradable of organic matter and
Nitration reaction；
6. entering after the water process in slurry Aerobic Pond carries out mud-water separation in second pond, the sludge of precipitation is returned by mixed liquor and sludge
Stream pump lifting is partly into anoxic pond, and another part is discharged into sludge-tank；
7. the supernatant of second pond is sent into sand filter by pipeline, considering clear water after water is considered in pond by sand flows into clear water reserviors.
The diameter with diameter greater than clear water pipe of the 3. described wash tub pipe of step, sets the row of flushing on the side pool wall of filtering area
Tank.The 3. described distributing main of step is connected with range pipe, and several distributing holes are opened up on range pipe, and range pipe is located at
In supporting layer.The 3. described wash tub pipe of step and clear water pipe horizontal direction are highly positioned at the top of filter material layer.Step is 3. described
Wash-water gutter communicated with collecting-tank.
, it is necessary to the water of filtering removes big floating object and suspension, stream by grid during equipment treatment sewage of the invention
Regulating reservoir is entered back into after entering collecting-tank, abundant regulating pondage, balanced water quality enter anoxic treatment, then Aerobic Process for Treatment, through precipitation
Supernatant sand filter treatment afterwards, the water COD after treatmentcr<35mg/l、BOD5<5 mg/l、SS<7 mg/l, total nitrogen<10 mg/
L, ammonia nitrogen<3 mg/l, water quality reaches one-level A standards.Sand filter used need not be respectively provided with clear water flowing water Valve and recoil
Valve is washed, with supply mains's two pipelines of parallel running are rinsed, one is relatively large in diameter pipeline and makees backwash water pipe, and this pipeline is with sand
The backwash water in filter tank and the difference for the treatment of water install check-valves as design discharge on backwash water pipe.Another is straight
The less pipeline in footpath does clear water pipe, and pipe diameter makees design discharge, two water pipes of different-diameter with the treatment water of sand filter
Outlet pipe after converging again with flush water pump is connected, due to that need not set clear water flowing water Valve and back flush valves, filtering and
Two kinds of working conditions of backwash are simple and reliable when switching, and the depth that sand filter is embedded in underground is unrestricted, can be applied to buried
Formula sewage disposal device, so as to solve the various problems such as the occupation of land of sewage disposal, pollution environment.Another feature of the present invention is energy
Sewage is processed using sand filter when imbedding underground for sewage disposal system, to improve quality of sewage disposal.Institute of the present invention
The method of category also has can avoid second lift, reduce operating cost, water economize on electricity per ton for 0.3 degree or so the advantages of.
Brief description of the drawings
Accompanying drawing 1 is a kind of valveless rapid sand filter advanced treating underground integrated sewage treating equipment of the present invention
Structural representation face figure；Accompanying drawing 2 is the planar structure schematic diagram of sand filter Chi Kou in Fig. 1；Accompanying drawing 3 is that sand filter bottom of pond is put down in Fig. 1
Face structural representation；Accompanying drawing 4 is A-A cross section structure diagrams in Fig. 3；Accompanying drawing 5 is C-C cross section structure diagrams in Fig. 3；Accompanying drawing
6 is B-B cross section structure diagrams in Fig. 3.
Specific embodiment
The present invention will be further described for control accompanying drawing.
A kind of valveless rapid sand filter advanced treating buried integrated sewage processing method of the present invention, including under
State method：
1. grid pond 1, collecting-tank 2, regulating reservoir 3, anoxic pond 5, Aerobic Pond 6, second pond 10, sand filter 13 and clear water reserviors 14 are set
Put below ground surface, the Chi Kou of grid pond 1 is flushed with ground surface, be easy into water, other each ponds open up blow vent；
2. collecting-tank elevator pump 15 is installed in the bottom of collecting-tank 2, regulating reservoir regulating reservoir elevator pump 4 is installed in the bottom of regulating reservoir 3, aerobic
Ejector 7 is installed in pond 6, tube settling disk 9 is installed at the middle part of second pond 10, the bottom of second pond 10 is respectively mounted the He of jet pump 11
Mechanical grille is set in mixed liquor and sludge reflux pump 12, grid pond；
3. sand considers pond includes filtering area 19 and clear water zone 20, and the inner bottom part of filtering area 19 sets distributing main 25, distributing main 25
In in supporting layer 26, the top of supporting layer 26 is filter material layer 27, and the top of filter material layer 27 sets water inlet pipe 28, and the top of water inlet pipe 28 is sand
Water layer 29 on face, one end of distributing main 25 is connected with the lower end for rinsing supply mains 24, distributing main 25 and wash tub pipe 22 and clearly
Water pipe 31 is in parallel, and its attachment structure is that the upper end for rinsing supply mains 24 is connected with the one end of wash tub pipe 22, wash tub pipe 22 it is another
It is connected with outlet pipe 32 after the bending downwards of one end, the upper end for rinsing supply mains 24 is connected with clear water pipe 31 simultaneously, and clear water pipe 31 is another
It is connected with outlet pipe 32 after the bending downwards of one end, outlet pipe 32 is connected with flush water pump 23, and check-valves is installed on wash tub pipe 22
21；
4. sewage first passes around mechanical grille and collecting-tank 2 will be flowed into after big floating object and suspended substance removal, then is lifted with collecting-tank
Pump 15 is sent into regulating reservoir 3 by pipeline, and water is passed through into pipeline with regulating reservoir elevator pump 4 again by regulating pondage, balanced water quality
Anoxic pond 5 is pumped into, while the returned sludge in second pond 10 passes through mixed liquor pipeline 17 by mixed liquor and sludge reflux pump 12
Into anoxic pond 5, the nitrification liquid in Aerobic Pond 6 enters anoxic pond 5 by nitrification liquid reflux pump 18；
5. the sewage after 4. being processed through step enters Aerobic Pond 6 by pipeline, and the biodegradation of organic matter is carried out in Aerobic Pond 6
And nitration reaction；
6. entering in second pond 10 after the water process in slurry Aerobic Pond 6 carries out mud-water separation, and the sludge of precipitation is by mixed liquor and dirt
The lifting of mud reflux pump 12 is partly into anoxic pond 5, and another part is discharged into sludge-tank；
7. the supernatant of second pond 10 is sent into sand filter by pipeline, considering clear water after water is considered in pond by sand flows into clear water reserviors.
The diameter with diameter greater than clear water pipe 31 of the 3. described wash tub pipe 22 of step, sets punching on the side pool wall of filtering area
Wash rhone 30.The 3. described distributing main 25 of step is connected with range pipe 33, and several distributing holes are opened up on range pipe 33,
Range pipe 33 is located in supporting layer 26.The 3. described wash tub pipe 22 of step and the horizontal direction of clear water pipe 31 are highly located at filtrate
The top of layer 27.The 3. described wash-water gutter 30 of step is communicated with collecting-tank.
Described in a kind of valveless rapid sand filter advanced treating buried integrated sewage processing method of the present invention
Range pipe 33 is distributed in the both sides of distributing main 25, is covered with filtering area.
In filtering, sewage is evenly distributed on sand face the 3. described sand filter of the inventive method step by water inlet pipe 28
Water layer 29, by after the filtering of filter material layer 27, clear water flows through supporting layer 26, and distributing main 25 is imported by several range pipes 33,
Clear water zone 20 is flowed into through rinsing house steward 6, clear water pipe 31 and flush water pump 23 again, is discharged through overfall.
When the filtering water in sand filter of the present invention is not reached to be required, it is necessary to rinse sand filter, to improve filtering
Water quality.Start flush water pump 23 when rinsing sand filter, by clear water pipe 31, backwashing water is by rinsing for backwashing water sub-fraction
Water pipe 22 and check-valves 21 enter flushing supply mains 24, then are assigned to range pipe 33 by distributing main 25, by range pipe
Distributing hole on 33 enters supporting layer 26.Filter material layer 27 is washed away in backwashing water flowing, promotes the sludge of filtrate layer surface to come off, and
Sludge is flushed to the water surface, flushing water rhone 30 is entered through water layer 29 on sand face in the lump with backwashing water, flowing into collecting-tank is carried out
Treatment.
The clear water pipe 31 that the present invention is set is 1 with the diameter proportion of flush pipe 4：1.5-4, backwashed during backwash with being reached
Water energy enough enters filter material layer and rinses sludge as early as possible.The diameter of clear water pipe 31 is rushed using the treatment water of sand filter as design discharge
The diameter of wash water pipe 22 is using the difference of the backwash water of sand filter and treatment water as design discharge, clear water pipe 31 and flush pipe
4 diameter proportion preferential 1：2.5.When needing backwash, after backwashing water is pressurizeed by flush water pump 23, it is divided into two-way by clear water
Pipe and wash tub pipe enter sand filter.
The present invention in order to increase water quality, rinse filter material layer when, because the effect clear water of check-valves is without going past flushing water
Pipe enters flush water pump, and ensures at the filtering initial stage rushed after Xian terminates, and water of the water relatively deeply but after filter is with less stream on sand face
Amount can prevent water pump from occurring to reverse phenomenon by flushing pump, not damage water pump.
Claims (5)
1. a kind of valveless rapid sand filter advanced treating buried integrated sewage processing method, it is characterised in that：Including following
Method：
1. by grid pond（1）, collecting-tank（2）, regulating reservoir（3）, anoxic pond（5）, Aerobic Pond（6）, second pond（10）, sand filter
（13）And clear water reserviors（14）It is arranged on below ground surface, grid pond（1）Chi Kou flushed with ground surface, be easy into water, other are each
Pond opens up blow vent；
2. in collecting-tank（2）Bottom is installed by collecting-tank elevator pump（15）, regulating reservoir（3）Bottom is installed by regulating reservoir regulating reservoir elevator pump
（4）, Aerobic Pond（6）Interior installation ejector（7）, in second pond（10）Middle part is installed by tube settling disk（9）, second pond（10）Bottom
It is respectively mounted jet pump（11）With mixed liquor and sludge reflux pump（12）, mechanical grille is set in grid pond；
3. sand considers pond includes filtering area（19）And clear water zone（20）, filtering area（19）Inner bottom part sets distributing main（25）, water distribution
Main（25）Positioned at supporting layer（26）It is interior, supporting layer（26）Top is filter material layer（27）, filter material layer（27）Top sets water inlet pipe
（28）, water inlet pipe（28）Water layer on the Shi Sha faces of top（29）, distributing main（25）One end and flushing supply mains（24）Lower end phase
Even, distributing main（25）With wash tub pipe（22）And clear water pipe（31）Parallel connection, its attachment structure is flushing supply mains（24）It is upper
End and wash tub pipe（22）One end connects, wash tub pipe（22）The other end downwards bending after with outlet pipe（32）Connection, rinses
Supply mains（24）Upper end simultaneously with clear water pipe（31）Connection, clear water pipe（31）With outlet pipe after other end bending downwards（32）Even
Connect, outlet pipe（32）With flush water pump（23）Connection, wash tub pipe（22）Upper installation check-valves（21）；
4. sewage first passes around mechanical grille and will flow into collecting-tank after big floating object and suspended substance removal（2）, then carried with collecting-tank
Rise pump（15）Regulating reservoir is sent into by pipeline（3）It is interior, regulating reservoir elevator pump is used again by regulating pondage, balanced water quality（4）By water
Anoxic pond is pumped into by pipeline（5）, while second pond（10）Interior returned sludge passes through mixed liquor and sludge reflux pump（12）It is logical
Cross mixing liquid pipe road（17）Into anoxic pond（5）, Aerobic Pond（6）Interior nitrification liquid is by nitrification liquid reflux pump（18）Into anoxic
Pond（5）；
5. the sewage after 4. being processed through step enters Aerobic Pond by pipeline（6）, in Aerobic Pond（6）Inside carry out the biology of organic matter
Degraded and nitration reaction；
6. Aerobic Pond is starched（6）Enter second pond after interior water process（10）Mud-water separation is inside carried out, the sludge of precipitation is by mixed liquor
And sludge reflux pump（12）Lifting is partly into anoxic pond（5）, another part is discharged into sludge-tank；
7. by second pond（10）Supernatant by pipeline send into sand filter, by sand consider pond consider water after clear water flow into clear water reserviors.
2. a kind of valveless rapid sand filter advanced treating buried integrated sewage processing method according to claim 1,
It is characterized in that：The 3. described wash tub pipe of step（22）With diameter greater than clear water pipe（31）Diameter, the side pool wall of filtering area
Upper setting wash-water gutter（30）.
3. a kind of valveless rapid sand filter advanced treating buried integrated sewage processing method according to claim 1,
It is characterized in that：The 3. described distributing main of step（25）With range pipe（33）Connection, range pipe（33）On open up several
Distributing hole, range pipe（33）Positioned at supporting layer（26）It is interior.
4. a kind of valveless rapid sand filter advanced treating buried integrated sewage processing method according to claim 1,
It is characterized in that：The 3. described wash tub pipe of step（22）And clear water pipe（31）Horizontal direction is highly located at filter material layer（27）It is upper
Portion.
5. a kind of valveless rapid sand filter advanced treating buried integrated sewage processing method according to claim 2,
It is characterized in that：The 3. described wash-water gutter of step（30）Communicated with collecting-tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710142276.7A CN106746376B (en) | 2017-03-10 | 2017-03-10 | A kind of valveless rapid sand filter advanced treating buried integrated sewage processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710142276.7A CN106746376B (en) | 2017-03-10 | 2017-03-10 | A kind of valveless rapid sand filter advanced treating buried integrated sewage processing method |
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| Publication Number | Publication Date |
|---|---|
| CN106746376A true CN106746376A (en) | 2017-05-31 |
| CN106746376B CN106746376B (en) | 2018-08-24 |
Family
ID=58962258
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| CN201710142276.7A Active CN106746376B (en) | 2017-03-10 | 2017-03-10 | A kind of valveless rapid sand filter advanced treating buried integrated sewage processing method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106823502A (en) * | 2017-03-15 | 2017-06-13 | 山东问清环境科技有限公司 | A kind of automatic pump of valveless gate control rinses sand filter |
| CN107285563A (en) * | 2017-07-12 | 2017-10-24 | 山东光合园林设计事务所有限公司 | Gardens water filter-cleaning cycles system |
| CN107285562A (en) * | 2017-07-12 | 2017-10-24 | 山东光合园林设计事务所有限公司 | Gardens water filter-cleaning cycles system |
| CN110327668A (en) * | 2019-07-18 | 2019-10-15 | 上海在田环境科技有限公司 | The water treatment facilities of novel valveless water filter device and the application novel valveless water filter device |
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| CN1586700A (en) * | 2004-08-12 | 2005-03-02 | 浙江德安新技术发展有限公司 | On-line back flushing sand filter |
| JP2006136753A (en) * | 2004-11-10 | 2006-06-01 | Mitsumasa Murakami | High pressure type fine sand filter and filtering method using it |
| CN202490477U (en) * | 2012-02-07 | 2012-10-17 | 扬州绿都环境工程设备有限公司 | Novel water collection and backwashing sand filter |
| CN103663852A (en) * | 2012-09-17 | 2014-03-26 | 陆小敏 | Underground type sewage treatment device |
| CN103848538A (en) * | 2012-12-05 | 2014-06-11 | 中国科学院生态环境研究中心 | Reactor and method for removing ammonia nitrogen in drinking water by virtue of enhanced filter and method thereof |
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| CN1586700A (en) * | 2004-08-12 | 2005-03-02 | 浙江德安新技术发展有限公司 | On-line back flushing sand filter |
| JP2006136753A (en) * | 2004-11-10 | 2006-06-01 | Mitsumasa Murakami | High pressure type fine sand filter and filtering method using it |
| CN202490477U (en) * | 2012-02-07 | 2012-10-17 | 扬州绿都环境工程设备有限公司 | Novel water collection and backwashing sand filter |
| CN103663852A (en) * | 2012-09-17 | 2014-03-26 | 陆小敏 | Underground type sewage treatment device |
| CN103848538A (en) * | 2012-12-05 | 2014-06-11 | 中国科学院生态环境研究中心 | Reactor and method for removing ammonia nitrogen in drinking water by virtue of enhanced filter and method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106823502A (en) * | 2017-03-15 | 2017-06-13 | 山东问清环境科技有限公司 | A kind of automatic pump of valveless gate control rinses sand filter |
| CN107285563A (en) * | 2017-07-12 | 2017-10-24 | 山东光合园林设计事务所有限公司 | Gardens water filter-cleaning cycles system |
| CN107285562A (en) * | 2017-07-12 | 2017-10-24 | 山东光合园林设计事务所有限公司 | Gardens water filter-cleaning cycles system |
| CN110327668A (en) * | 2019-07-18 | 2019-10-15 | 上海在田环境科技有限公司 | The water treatment facilities of novel valveless water filter device and the application novel valveless water filter device |
| CN110327668B (en) * | 2019-07-18 | 2021-08-20 | 上海在田环境科技有限公司 | Valveless filter and water treatment device using same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106746376B (en) | 2018-08-24 |
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