CN101857310B - Automatic backwashing biological filter tank - Google Patents
Automatic backwashing biological filter tank Download PDFInfo
- Publication number
- CN101857310B CN101857310B CN2010102131907A CN201010213190A CN101857310B CN 101857310 B CN101857310 B CN 101857310B CN 2010102131907 A CN2010102131907 A CN 2010102131907A CN 201010213190 A CN201010213190 A CN 201010213190A CN 101857310 B CN101857310 B CN 101857310B
- Authority
- CN
- China
- Prior art keywords
- water
- district
- clear water
- pressurized
- zone
- 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
Links
- 238000011001 backwashing Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 178
- 238000001914 filtration Methods 0.000 claims abstract description 49
- 238000005192 partition Methods 0.000 claims abstract description 15
- 239000003599 detergent Substances 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 4
- 230000000813 microbial effect Effects 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 abstract description 9
- 239000000706 filtrate Substances 0.000 description 13
- 238000009360 aquaculture Methods 0.000 description 9
- 238000000746 purification Methods 0.000 description 8
- 244000144974 aquaculture Species 0.000 description 7
- 239000010865 sewage Substances 0.000 description 7
- 241000251468 Actinopterygii Species 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- -1 rubble Substances 0.000 description 1
- 238000009287 sand filtration Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002195 soluble material Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Images
Landscapes
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention relates to an automatic backwashing biological filter tank, which comprises a filter tank and is characterized in that: the water filter is characterized in that a supporting net is arranged in the water filter pool, a water passing seam channel is arranged between the supporting net and the bottom of the water filter pool, a partition plate is arranged in the middle of the water filter pool, water passing holes connected with two ends are formed in the upper side portion of the partition plate, the two sides of the partition plate are respectively provided with a water inlet end and a water outlet end, a pressurized water partition plate is arranged in the middle of the water inlet end, the water inlet end is divided into a pressurized water area and a reverse filtering area by the pressurized water partition plate, the pressurized water area is communicated with the bottom of the reverse filtering area through the water passing seam channel, a clear water partition plate is arranged in the middle of the water outlet end and divides the water outlet end into a forward filtering area and a clear water area, the forward filtering area is communicated with the bottom of the clear water area through the water passing seam channel, a reverse cleaning device is arranged between the clear water area and the pressurized.
Description
Technical field
The present invention relates to a kind of automatic backwashing biological filtering pond.This device belongs to facility cultivation industry equipment, is mainly used in the processing of the aquaculture wastewater of high-density, intensification, batch production fresh-water fishes in all kinds of hydrocoles aquaculture wastewaters, particularly greenhouse, the booth, also is adapted to the purifying treatment of other kind sewage.
Background technology
The biological treatment structures that biological filter (biological filter) is made up of rubble, plastics or ceramic filler.The microbial film gap of growing on sewage and the filling surface contacts, and sewage is purified.It is to be foundation with the soil self-purification principle, on the practical basis of sewage irrigation, through the artificial bio-membrane's treatment technology that grows up than primary intermittent sand filtration pond and contact filter.In recent years, scientist and engineering technical personnel have all carried out abundant research and technological improvement at aspects such as filtrate screening, pool wall pond bottom structure and water distribution systems, have obtained certain effect.But, the biological filter is applied to culture fishery, the filtrate phenomenon of blocking often appears, cause the filter tank hypofunction.Especially, high-density, intensification, industrialized aquiculture in the warmhouse booth, the movement of fish and spill into the residual bait of rich in proteins and other residue in the pond; Can not get effectively decomposing and handling, under the environment more than 25 ℃, very fast putrid fermentation; Generate a large amount of objectionable impuritiess; Water transparency is very little, and dissolved oxygen amount descends
NH 4 + -NContent raises.On the other hand, filtrate is stopped up by residual bait and other residue in the filter tank, and aquaculture water is in working cycle; Be difficult to through filtrate, the microorganism growth condition is limited, causes the filter tank purification function to completely lose; The aggravation cultivation water worsens circulation, and water body is seriously smelly, and fish can't survive.The filter tank that has is provided with sludge drainage system, but needs closure systems, and use starting desilting flushing back, and restarts and need the quite a long period, can reply the filter tank purification function.Like this, not only bother but also consuming time, also do not fit into high-density aquiculture.Therefore, guaranteeing that filtrate is not blocked, is the key point of performance biological filter purification function.The present invention provides a kind of biological filter, possesses automatic anti-cleaning function, is intended to address the aforementioned drawbacks.
Summary of the invention
The object of the present invention is to provide a kind of automatic backwashing biological filtering pond, this device possesses automatic anti-cleaning function, does not efflux to put in a suitable place to breed to system and grows sewage; Meet the requirement of water saving, energy-saving and emission-reduction and Sustainable development; And cheap, make simply, be convenient to operation.
Technical program of the present invention lies in: a kind of automatic backwashing biological filtering pond, comprise filtered water reservoir, it is characterized in that: be provided with supporting network in the said filtered water reservoir; Be provided with water seam road between supporting network and the filtered water reservoir bottom, the filtered water reservoir middle part is provided with partition panel, and the upper lateral part of said partition panel is provided with the water hole that connects two ends; The partition panel both sides are respectively feed-water end and water side, and the feed-water end middle part is provided with the setting-out dividing plate, and the setting-out dividing plate is divided into pressurized water district and filtration area with feed-water end; The pressurized water district was passed through water seam road with the bottom, filtration area and was communicated with; Water side middle part is provided with the clear water dividing plate, and the clear water dividing plate is divided into the water side just filters district and clear water zone, and said district and the clear water zone bottom of just filtering passed through water and stitched the road and be communicated with; Be provided with anti-washing unit between clear water zone and the pressurized water district; Said anti-washing unit comprises the anti-scavenging pump of being located in the pressurized water district, and anti-scavenging pump is connected with clear water zone through anti-detergent line, and said anti-detergent line is provided with filtration unit.
The invention has the advantages that: 1, simple in structure, production cost is low, is convenient to operation;
2, will culture water and in these filtering basin, carry out filtration, purification, and supply with box for breeding more again and use, outside system, not discharge sewage, meet the requirement of water saving, energy-saving and emission-reduction and Sustainable development;
3, have anti-automatically characteristics of cleaning, can guarantee that filtrate is not blocked, can effectively bring into play the purification function of biological filter.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
A kind of automatic backwashing biological filtering pond comprises filtered water reservoir 1, it is characterized in that: be provided with supporting network 2 in the said filtered water reservoir; Be provided with water seam road 3 between supporting network and the filtered water reservoir bottom, the filtered water reservoir middle part is provided with partition panel 4, and the upper lateral part of said partition panel is provided with the water hole 5 that connects two ends; The partition panel both sides are respectively feed-water end and water side, and the feed-water end middle part is provided with setting-out dividing plate 6, and the setting-out dividing plate is divided into pressurized water district 7 and filtration area 8 with feed-water end; The pressurized water district was passed through water seam road with the bottom, filtration area and was communicated with; Water side middle part is provided with clear water dividing plate 9, and the clear water dividing plate is divided into the water side just filters district 10 and clear water zone 11, and said district and the clear water zone bottom of just filtering passed through water and stitched the road and be communicated with; Be provided with anti-washing unit between clear water zone and the pressurized water district; Said anti-washing unit comprises the anti-scavenging pump of being located in the pressurized water district 12, and anti-scavenging pump is connected with clear water zone through anti-detergent line 13, and said anti-detergent line is provided with filtration unit 14.
For the aquaculture wastewater that gets into the filter tank is filtered, said just the filter can be filled in rubble, plastics or ceramic, filter cotton, porous material, biochemistry ball, the gac one or more in district and the filtration area, and filtrate 15 surfaces are coated with microbial film.
Be provided with water pump 16 in the said clear water zone, the rising pipe one tunnel of water pump is connected to periodical feeding pipeline 17, and another road is connected to atomizer passgae 18; Also be provided with SV 19 on the said rising pipe, the water outlet of SV is connected to clear water zone, when hydraulic pressure is excessive on the water-supply line; Unnecessary water flows back to clean water basin from SV; Also be provided with electric heater 20 in the clear water zone,, keep the temperature-stable in the cultivating system in order under the situation of low ambient temperature, water supply is heated.
Said filtering basin are provided with unit 21; Anti-detergent line is provided with SV B, and the periodical feeding pipeline is provided with SV A, and atomizer passgae is provided with SV C; Be provided with liquid level sensor 22 in clear water zone and the pressurized water district, said unit is according to the keying of each SV of sensor signal control.
The periodical feeding pipeline supplies water to cultivating system, when the envrionment temperature of cultivating system too high, or relative wet spend low, then through mist cooling and humidification.The work of atomizer passgae is controlled by controlling box; The employing program is sprayed and is forced the mode that combines of spraying; Program spraying can formulate spray time, spray amount, spray intervals time, it be main with the humidification, cooling is auxilliary, and can be according to biological growth demand online at any time change program in free air temperature, day irradiation dose and the aquaculture system; And force spraying on program spraying basis, to increase in addition; Special too high when the aquaculture system temperature, normal program spraying does not still reach lowers the temperature when requiring, and it can close SV A automatically; Opens solenoid valve C; To increase the hydraulic pressure of atomizer passgae, press spraying in the realization, reach the purpose of local fast cooling.
In order to control the service discharge that gets into cultivating system, also be provided with flow valve 23 on the said periodical feeding pipeline.
For the aquaculture wastewater that passes back into filtering basin is carried out preliminary filtration, the feed-water end 27 of pressurized water district is provided with filtering net 24, and suction culvert is provided with filter tap 25.
In order to prevent to be blocked when filtrate, current can't flow to clear water zone from the pressurized water district swimmingly, thereby cause the pressurized water district current cultivating system that flows backwards back, and the upper lateral part of said pressurized water district sidewall is provided with riser 26.
After finishing in anti-cleaning, in clear water zone, replenish an amount of clear water, to guarantee the water supply on the periodical feeding pipeline, the branch road of said anti-detergent line is provided with the water intaking valve 28 towards clear water zone.
Principle of work of the present invention is following: be divided into pressurized water district, filtration area in this biological filter filtered water reservoir, just filter district and clear water zone; Four districts separate with dividing plate respectively; Wherein be provided with water seam road between bottom of the setting-out dividing plate between pressurized water district and the filtration area and the filtered water reservoir bottom; Filtration area and the intermediate membrane top of just filtering between the district were provided with water seam road; Just filtering between clear water dividing plate bottom and the filtered water reservoir bottom between district and the clear water zone and be provided with water hole, the sewage that gets into the pressurized water district from water return pipeline gets into the filtration area through the water seam road of crossing of setting-out dividing plate bottom earlier, and the water hole through intermediate membrane top gets into and just filtering the district again; Get into clear water zone through the water seam road of crossing of clear water dividing plate bottom again; Filtrates such as rubble, plastics or the ceramic of filling in the positive and negative filter district, filter cotton, porous material, biochemistry ball, activated carbon are fixed corporeal thing in the water and micro-soluble material, and having played physical cleaning is main effect; Meanwhile, the microbial film that filter material surface forms can be decomposed into the movement of fish body simple compounds such as CO2, ammonia, carbonate, vitriol, plays biological purification.Purify the clear water zone that the back water body flows into the filter tank, can cycling and reutilization.
Aspirate from clear water zone by water pump,, supply water and produce the cultivating system water through flow valve and circulation transmission & distribution pipeline.
Automatic back cleaning system comprises is located at anti-scavenging pump in the pressurized water district, and anti-scavenging pump is connected with clear water zone through anti-detergent line, and said anti-detergent line is provided with filtration unit.When filtrate was blocked in the filter tank, the pressurized water district water level can raise, and the waterhead of pressurized water district and clear water zone is big more, and filtrate stops up serious more.When the pressurized water district water level was increased on the dividing plate riser height, liquid level sensor sent electromagnetic signal, closes SV A automatically, opens solenoid valve B, and back cleaning system is started working.
Anti-flushing water pump is extracted the water of pressurized water district out, behind the filtration unit of flowing through, gets into clear water zone.Along with the clear water zone water level rises, under the hydraulic pressure effect, the current of just filtering district and filtration area of flowing through wash filtrate by reverse direction, and tamper is poured the pressurized water district.In anti-flushing water pump continuous firing process, these tampers are trapped on the filtration unit.Anti-scavenging period can be controlled according to filtrate stopping state on-line setup and by controlling box with the anti-flow that cleans automatically.After anti-cleaning finishes, close SV B automatically, opens solenoid valve A, the filtration, purification system recovery is normal.
The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (4)
1. an automatic backwashing biological filtering pond comprises filtered water reservoir, it is characterized in that: be provided with supporting network in the said filtered water reservoir; Be provided with water seam road between supporting network and the filtered water reservoir bottom, the filtered water reservoir middle part is provided with partition panel, and the upper lateral part of said partition panel is provided with the water hole that connects two ends; The partition panel both sides are respectively feed-water end and water side, and the feed-water end middle part is provided with the setting-out dividing plate, and the setting-out dividing plate is divided into pressurized water district and filtration area with feed-water end; The pressurized water district was passed through water seam road with the bottom, filtration area and was communicated with; Water side middle part is provided with the clear water dividing plate, and the clear water dividing plate is divided into the water side just filters district and clear water zone, and said district and the clear water zone bottom of just filtering passed through water and stitched the road and be communicated with; Be provided with anti-washing unit between clear water zone and the pressurized water district; Said anti-washing unit comprises the anti-scavenging pump of being located in the pressurized water district, and anti-scavenging pump is connected with clear water zone through anti-detergent line, and said anti-detergent line is provided with filtration unit; Saidly just filtering in filling rubble, plastics in district and the filtration area or ceramic, filter cotton, biochemistry ball, the gac one or more, filter material surface is coated with microbial film; Be provided with water pump in the said clear water zone, the rising pipe one tunnel of water pump is connected to the periodical feeding pipeline, and another road is connected to atomizer passgae, also is provided with SV on the said rising pipe, and the water outlet of SV is connected to clear water zone, also is provided with electric heater in the clear water zone; Said filtering basin are provided with unit; Anti-detergent line is provided with SV B, and the periodical feeding pipeline is provided with SV A, and atomizer passgae is provided with SV C; Be provided with liquid level sensor in clear water zone and the pressurized water district, said unit is according to the keying of each SV of sensor signal control; The upper lateral part of said pressurized water district sidewall is provided with riser.
2. automatic backwashing biological filtering pond according to claim 1 is characterized in that: also be provided with flow valve on the said periodical feeding pipeline.
3. automatic backwashing biological filtering pond according to claim 1 is characterized in that: the feed-water end of pressurized water district is provided with filtering net, and suction culvert is provided with filter tap.
4. automatic backwashing biological filtering pond according to claim 1 is characterized in that: the branch road of said anti-detergent line is provided with the water intaking valve towards clear water zone.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010102131907A CN101857310B (en) | 2010-06-30 | 2010-06-30 | Automatic backwashing biological filter tank |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010102131907A CN101857310B (en) | 2010-06-30 | 2010-06-30 | Automatic backwashing biological filter tank |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101857310A CN101857310A (en) | 2010-10-13 |
CN101857310B true CN101857310B (en) | 2012-05-09 |
Family
ID=42943510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2010102131907A Expired - Fee Related CN101857310B (en) | 2010-06-30 | 2010-06-30 | Automatic backwashing biological filter tank |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN101857310B (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103081843B (en) * | 2011-11-04 | 2015-01-14 | 喃嵘水产(上海)有限公司 | Centralization indoor constant temperature circulation aquaculture system |
JP6176508B2 (en) | 2013-03-15 | 2017-08-09 | ロシュ, スティーヴン, ディー.ROCHE,Stephen, D. | Self-cleaning prefilter for water circulation pump |
CN104889098A (en) * | 2015-06-09 | 2015-09-09 | 广州骏鹏投资有限公司 | Automatic cleaning device |
CN106973695A (en) * | 2017-03-16 | 2017-07-25 | 中国农业大学 | A kind of fish dish edible mushroom cogeneration system |
CN107372262A (en) * | 2017-09-13 | 2017-11-24 | 何亮 | Environmental automatic pollutant removal formula aquaculture net cage |
CN108640312A (en) * | 2018-05-24 | 2018-10-12 | 姚安迪 | A kind of efficient domestic sewage processing unit |
CN108975636A (en) * | 2018-09-14 | 2018-12-11 | 江苏中车环保设备有限公司 | It is a kind of to propose marking device and system suitable for the processing of villages and small towns dispersant type domestic wastewater |
CN111657220A (en) * | 2020-06-18 | 2020-09-15 | 张伟伟 | Fish tank filtering system capable of discharging sewage |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0016999A1 (en) * | 1979-03-12 | 1980-10-15 | SP Jürgen Schwarzer GmbH & Co KG | Biological filtration device for aquaria |
CN1413925A (en) * | 2001-10-24 | 2003-04-30 | 三星工程株式会社 | Batch sewage treatment device using biofiltering method and its sewage treatment method |
CN1482079A (en) * | 2002-09-13 | 2004-03-17 | 吴祥德 | Method and apparatus for artificial wetland sewage treatment |
CN201257323Y (en) * | 2008-07-21 | 2009-06-17 | 张海波 | Fiber filter material high-speed filter |
CN101643269A (en) * | 2008-08-07 | 2010-02-10 | 中冶赛迪工程技术股份有限公司 | Biological aerated filter and process |
-
2010
- 2010-06-30 CN CN2010102131907A patent/CN101857310B/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0016999A1 (en) * | 1979-03-12 | 1980-10-15 | SP Jürgen Schwarzer GmbH & Co KG | Biological filtration device for aquaria |
CN1413925A (en) * | 2001-10-24 | 2003-04-30 | 三星工程株式会社 | Batch sewage treatment device using biofiltering method and its sewage treatment method |
CN1482079A (en) * | 2002-09-13 | 2004-03-17 | 吴祥德 | Method and apparatus for artificial wetland sewage treatment |
CN201257323Y (en) * | 2008-07-21 | 2009-06-17 | 张海波 | Fiber filter material high-speed filter |
CN101643269A (en) * | 2008-08-07 | 2010-02-10 | 中冶赛迪工程技术股份有限公司 | Biological aerated filter and process |
Non-Patent Citations (1)
Title |
---|
陈敏等.生态型多层养鳖装置的试验研究.《农业工程学报》.2001,第17卷(第5期),第92-94页. * |
Also Published As
Publication number | Publication date |
---|---|
CN101857310A (en) | 2010-10-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101857310B (en) | Automatic backwashing biological filter tank | |
CN103238554B (en) | Ecotype enclosed method for culturing fish through circulation water | |
CN106746205A (en) | A kind of Intelligent rain purifies landscape system | |
CN103718923B (en) | Based on the automatic sprinkling system that the Sewage treatment of septic tank utilizes | |
US8187461B2 (en) | System and method for processing and reusing graywater including for use in a home and garden | |
CN106082562B (en) | Community sewage integrated treatment and reuse system and application | |
CN109349197A (en) | An aquaculture farm water circulation system and its control method | |
CN105110507B (en) | Drainage processing equipment is floated in a kind of self-cleaning | |
CN102502966B (en) | An artificial hydroponic wetland device with the function of enriching nitrogen and phosphorus nutrients | |
CN102167470B (en) | Ecological self-maintaining device of landscape water body | |
CN104192985B (en) | Back flushing water distribution system and control method thereof are exempted from a kind of biological filter | |
CN104402177A (en) | Community domestic sewage treatment system | |
CN104085998A (en) | Constructed wetland system capable of reinforcing microbial actions | |
CN205222834U (en) | A device for hot house rainwater purifies | |
CN206354218U (en) | Racetrack high density fish and vegetable symbiotic system | |
CN210945229U (en) | Sewage treatment biological filter | |
CN205151894U (en) | Degree of depth denitrogenation V type filtering pond | |
CN207811495U (en) | A kind of simple fishpond sewage disposal system | |
CN110981095A (en) | A garden water collection and water supply circulation purification system | |
CN102503045B (en) | Biomembrane sewage processing method | |
CN100569678C (en) | A kind of eutrophic water treatment process | |
CN201125203Y (en) | Water environment biological, ecological high-efficiency restoring system | |
CN213202739U (en) | Artificial wetland for circulating and purifying landscape water body | |
CN208561942U (en) | A kind of Water feeding treatment device | |
CN206408065U (en) | The modular integrated processing equipment of complex media |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120509 Termination date: 20150630 |
|
EXPY | Termination of patent right or utility model |