CN202924819U - Aeration biological filter tank - Google Patents
Aeration biological filter tank Download PDFInfo
- Publication number
- CN202924819U CN202924819U CN2012205982012U CN201220598201U CN202924819U CN 202924819 U CN202924819 U CN 202924819U CN 2012205982012 U CN2012205982012 U CN 2012205982012U CN 201220598201 U CN201220598201 U CN 201220598201U CN 202924819 U CN202924819 U CN 202924819U
- Authority
- CN
- China
- Prior art keywords
- tank body
- solid
- filtrate
- liquid separator
- water
- 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.)
- Withdrawn - After Issue
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The utility model discloses an aeration biological filter tank capable of continuously performing sewage treatment. The aeration biological filter tank comprises a tank body; a filter material is filled in the tank body; a clear water overflow port is formed at the upper part of the tank body; a water inlet pipe, a gas inlet pipe, a filter material lifting pipe, a solid-liquid separator and a gas distributor are arranged in the tank body; the solid outlet of the solid-liquid separator is connected with a filter material cleaning device; and the liquid outlet of the solid-liquid separator is connected with a drain pipe communicated with the outside. When in use, the aeration biological filter tank can continuously perform sewage treatment, so that the sewage treatment efficiency is improved; when in backwashing of the filter material, the aeration biological filter tank does not need much clear water and can be used for saving time and labor; and moreover, the aeration biological filter tank only needs a low-power fan for cleaning the filter tank, a high-power fan, a water pump, multiple electric valves and a self-control device are omitted, and the cost is greatly lowered; and the aeration biological filter tank is suitable for popularization and application in the field of sewage treatment equipment.
Description
Technical field
The utility model relates to sewage disposal device field, especially a kind of aerating biological filtering pot.
Background technology
BAF technique is the sewage treatment technique that rises the beginning of the nineties, and is widely popular in developed countries such as American-European and Japan.This technique has removes SS, COD, BOD, nitrated, denitrogenation, dephosphorization, removal AOX(objectionable impurities) effect, be characterized in integrating bio-oxidation and hold back suspended solids, saved the post precipitation pond, its volumetric loading, hydraulic load are large, hydraulic detention time is short, required initial cost is few, and effluent quality is good: operation energy consumption is low, economic operating cost.
The technical process of BAF Treating Municipal Sewage is as follows: municipal effluent is process coarse rack-lifting pumping plant-fine fack-settling pit-anoxic pond-settling tank-ultra-fine grid-aerating biological filtering pot successively, effluent reuse or discharging after last disinfection.wherein, aerating biological filtering pot is with its unique constitutional features and operation characteristic, in the practice process to municipal effluent and other various industrial sewage processing engineering, obtained excellent effect, demonstrate its unique superiority, main manifestations is in the following areas: process the structures volume little, small accommodation area, effluent quality is superior, stable, capacity of resisting impact load is strong, save air capacity and electricity, treatment scheme is simple, construction investment is relatively low, little to environmental influence, the treatment facility primary starting is extremely convenient, water quality and quantity is changed strong adaptability, level of automation is high, operational management is convenient.
At present, the aerating biological filtering pot that uses comprises tank body, be filled with filtrate in tank body, the top of described tank body is provided with the clean water overflow mouth, be provided with filter plate in tank body, filtrate is positioned at above filter plate, is provided with the filter for the gas distribution water distribution on filter plate, also be provided with back-purge system in tank base, described back-purge system needs allocating power larger blower fan, water pump and overlaps electrically operated valve and self-con-tained unit more.existing aerating biological filtering pot filtrate in operational process is held back suspended substance and is on the increase, the filtering layer resistance increases, the outside surface of filtrate forms aging microbial film reduces the organic matter degradation ability, therefore must carry out back flushing to reduce the filtering layer resistance to filtrate, remove the aging microbial film of filtrate outside surface by media regeneration, when filtrate is carried out back flushing, usually need to shut down, end the sewage disposal process, rinse and then to carry out sewage disposal after complete Deng filtrate, can not carry out continuously sewage disposal, make the Efficiency Decreasing of sewage disposal, and clear water that need to be a large amount of when filtrate is carried out back flushing, rinsing the sewage of filtrate formation must process again, time-consuming effort again, moreover, existing backwashing equipment is by blower fan, water pump, many cover electrically operated valves and self-con-tained unit form, cost is higher, and need to consume a large amount of electric energy during back flushing, energy consumption is relatively large.
The utility model content
Technical problem to be solved in the utility model is to provide a kind ofly can carry out the aerating biological filtering pot of sewage disposal continuously.
the technical scheme that its technical problem that solves the utility model adopts is: this aerating biological filtering pot, comprise tank body, be filled with filtrate in tank body, the top of described tank body is provided with the clean water overflow mouth, be provided with water inlet pipe in described tank body, inlet pipe, the filtrate riser tube, solid-liquid separator, gas pipe, described gas pipe is arranged on water inlet pipe, be connected with aeration flexible pipe on gas pipe, described solid-liquid separator is positioned at the top of tank body, the water-in of described water inlet pipe is in communication with the outside, the water outlet of water inlet pipe is positioned at tank body lower part, described filtrate riser tube upper end is connected on solid-liquid separator, the lower end of filtrate riser tube is positioned at tank body lower part, the inlet mouth of described inlet pipe is in communication with the outside, the air outlet of inlet pipe is positioned at the lower port of filtrate riser tube and air outlet towards the filtrate riser tube, the solid outlet place of described solid-liquid separator is connected with filtering material cleaning device, the liquid outlet of solid-liquid separator is connected with the water shoot that is in communication with the outside, the outlet of described filtering material cleaning device is communicated with tank interior.
Be further, described solid-liquid separator comprises the shell of sealing, be provided with inner casing in described shell, described inner casing is divided into center cavity and the annular chamber that is positioned at the center cavity outside with the inner chamber of shell, the upper end of filtrate riser tube is positioned at center cavity, be provided with overflow weir on the sidewall of inner casing, the liquid exit that opening forms described solid-liquid separator is set on the sidewall of shell, in the bottom of inner casing, the solid outlet that opening forms described solid-liquid separator is set.
Be further, described filtering material cleaning device is made of urceolus and the inner core that is positioned at urceolus, gap between inner core and urceolus consists of the filtrate flushing channel, the upper end of described filtrate flushing channel is communicated with the solid outlet of solid-liquid separator, and the lower end of described filtrate flushing channel is the outlet of filtering material cleaning device.
Further that described filtrate flushing channel has a plurality of kinks.
Be further, be provided with the effluent weir of annular in described tank body, described effluent weir is positioned at the top of tank body and forms the interlayer cavity with the sidewall of tank body, and described interlayer cavity is communicated with the clean water overflow mouth.
Further that described overflow weir is positioned at the end face below of effluent weir.
Further that the water outlet of described water inlet pipe is provided with water distributor.
Further that the exit of described inlet pipe is provided with nozzle.
Be further, described tank base is provided with inspection window, and inspection window place's sealing is provided with cover plate.
This has the beneficial effect : the biological aerated filter canister when using sewage into the water from the tank into the lower and increase the use of cloth scrubber effluent oxygen content , and then flows upward from the bottom of the tank , because filled the tank in the media, the upward flow of water in the process , the filter layer effluent suspended solids trapped by the filter , while the formation of organic matter is also attached to the filter microbial degradation by water after treatment recycling effluent water overflow or discharge , the water treatment process , in the compressed air introduced into the intake pipe through the intake pipe and the riser discharge to the filter , due to the rapid flow of the gas to generate a negative pressure portion of the filter and sewage suction filter with the riser and into the solid-liquid separator, in the process of upgrading the water filter and air filter on a joint pre-rinse , filter and water separator separated after entering the sewage by solid-liquid separation drains into the liquid outlet is discharged under gravity into the filter media to clean wash the apparatus from the biofilm remaining on the surface of aging liquid separator solids outlet down , new filter from the filter cleaning apparatus of the exports fall inside the tank cycle work , the whole process can be done automatically filter flushing , no downtime , waste water treatment can be continued to improve the efficiency of wastewater treatment , but when carried out in the backwash of the filter does not require a lot of water, save time and effort , in addition, the biological aerated filter canister to be cleaned only when the power of a small fan, eliminating the need for high power fans, pumps and multiple sets of electric valves and automatic control devices , greatly reducing the cost , and does not consume a lot of power when flushing , energy consumption is relatively small.
Description of drawings
Fig. 1 is the structural representation of the utility model aerating biological filtering pot;
Description of symbols in figure: tank body 1, filtrate 2, clean water overflow mouth 3, water inlet pipe 4, inlet pipe 5, filtrate riser tube 6, solid-liquid separator 7, shell 71, inner casing 72, center cavity 73, annular chamber 74, overflow weir 75, gas pipe 8, aeration flexible pipe 9, water shoot 10, filtering material cleaning device 11, urceolus 110, inner core 111, filtrate flushing channel 112, effluent weir 12, interlayer cavity 13, water distributor 14, nozzle 15, cover plate 16.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
as shown in Figure 1, this aerating biological filtering pot, comprise tank body 1, be filled with filtrate 2 in tank body 1, the top of described tank body 1 is provided with clean water overflow mouth 3, be provided with water inlet pipe 4 in described tank body 1, inlet pipe 5, filtrate riser tube 6, solid-liquid separator 7, gas pipe 8, described gas pipe 8 is arranged on water inlet pipe 4, be connected with aeration flexible pipe 9 on gas pipe 8, described solid-liquid separator 7 is positioned at the top of tank body 1, the water-in of described water inlet pipe 4 is in communication with the outside, the water outlet of water inlet pipe 4 is positioned at tank body 1 bottom, described filtrate riser tube 6 upper ends are connected on solid-liquid separator 7, the lower end of filtrate riser tube 6 is positioned at tank body 1 bottom, the inlet mouth of described inlet pipe 5 is in communication with the outside, the air outlet of inlet pipe 5 is positioned at the lower port of filtrate riser tube 6 and air outlet towards filtrate riser tube 6, the solid outlet place of described solid-liquid separator 7 is connected with filtering material cleaning device 11, the liquid outlet of solid-liquid separator 7 is connected with the water shoot 10 that is in communication with the outside, the outlet of described filtering material cleaning device 11 and tank body 1 internal communication.The biological aerated filter tank in use, the sewage from the inlet pipe 4 into the lower part of the tank 1 and 8 to increase the use of gas distribution in the oxygen content of the water , and then flows upward from a bottom of the tank , because the tank 1 filled filter 2 , the upward flow of water in the process , the effluent suspended solids formed by media filter layer 2 while organic matter trapped in the filter is also attached two microbial degradation by water after treatment 3 water overflow or discharge effluent recycling in wastewater treatment process, through the intake pipe 5 into the air intake pipe 5 and through the riser discharge to the filter 6, since the high-speed flow of the gas to generate a negative pressure part 2 and sewage filter with suction filter inside the riser 6 and 7 into the solid-liquid separator , filter 2 in the process of upgrading water and gas for two joint pre-rinse the filter , the filter 2 and sewage into after separation of the separator , the liquid outlet 7 of the separated water into the drain pipe 10 is discharged , the filter 2 under gravity down into the filter cleaning apparatus solids outlet from the liquid separator 11 of the washed surface 7 residual aging biofilm nascent export filter 2 filter cleaning device 11 from falling into the tank inside a cycle work , the whole process can be completed automatically flushing filter 2 , no downtime , waste water treatment can be continued to improve efficiency of wastewater treatment , but also in two of the filter backwash do not need a lot of water , save time and effort , in addition, the biological aerated filter tank cleaning of filter 2 is just a small wind turbine power , eliminating the need for high power fans, pumps and multiple sets of electric valves and automatic control devices , which greatly reduces the cost , and does not need to consume a lot of energy when washing, power consumption is relatively small.
in the above-described embodiment, described solid-liquid separator 7 can adopt existing various solid-liquid separating equipment, as preferred mode be: described solid-liquid separator 7 comprises the shell 71 of sealing, be provided with inner casing 72 in described shell 71, described inner casing 72 is divided into center cavity 73 and the annular chamber 74 that is positioned at center cavity 73 outsides with the inner chamber of shell 71, the upper end of filtrate riser tube 6 is positioned at center cavity 73, be provided with overflow weir 75 on the sidewall of inner casing 72, the liquid exit that opening forms described solid-liquid separator 7 is set on the sidewall of shell 71, in the bottom of inner casing 72, the solid outlet that opening forms described solid-liquid separator 7 is set, the solid-liquid separator 7 of this structure is simple in structure, the processing and fabricating cost is low, and can effectively separate sewage and filtrate 2.
in addition, it is to realize that described filtering material cleaning device 11 can adopt variety of way, for example, can adopt the mode of High-Pressure Water, also can adopt hyperacoustic mode, as preferred mode be: described filtering material cleaning device 11 is made of urceolus 110 and the inner core 111 that is positioned at urceolus 110, gap between inner core 111 and urceolus 110 consists of filtrate flushing channel 112, the upper end of described filtrate flushing channel 112 is communicated with the solid outlet of solid-liquid separator 7, the lower end of described filtrate flushing channel 112 is the outlet of filtering material cleaning device 11, filtering material cleaning device 11 structures of this structure are very simple, by means of the current that rise, filtrate 2 is cleaned, do not need extra utility appliance, cost is very low, and there is no an energy consumption, economy is environmental protection again.In order to improve cleaning performance, the scavenging period of increase to filtrate 2, described filtrate flushing channel 112 has a plurality of kinks, filtrate flushing channel 112 its length with a plurality of bending parts can increase greatly, make current fully to rinse filtrate 2, and then improve the effect of the flushing of filtrate 2.
can in time discharge tank body in order to guarantee the clear water after tank body 1 inner filtration, general way be with the opening of clean water overflow mouth 3 arrange larger, or along tank body 1 surrounding, several clean water overflow mouths 3 are set more, as preferred mode be: the effluent weir 12 that is provided with annular in described tank body 1, described effluent weir 12 is positioned at the top of tank body 1 and forms interlayer cavity 13 with the sidewall of tank body 1, described interlayer cavity 13 is communicated with clean water overflow mouth 3, clear water first from the top overflow of effluent weir 12 to mezzanine space, and then collect from 3 outflows of clean water overflow mouth, this mode does not need to arrange a plurality of clean water overflow mouths 3, can difficulty of processing will be reduced, only need simultaneously a clean water overflow mouth 3 to get final product, clear water can be concentrated and discharge.
clean in order to make clear water after processing can enter smoothly 112 pairs of filtrates 2 of filtrate flushing channel, described overflow weir 75 is positioned at the end face below of effluent weir 12, make between the overflow weir 75 of effluent weir 12 and solid-liquid separator 7 and form waterhead, being convenient to clear water enters 112 pairs of filtrates 2 of filtrate flushing channel and cleans, and utilize waterhead between the overflow weir 75 of effluent weir 12 and solid-liquid separator 7 can control flow velocity by filtrate flushing channel 112, realize best cleaning Strong degree, guarantee to wash aging microbial film off and don't can wash away newborn microbial film, guarantee the processing efficiency of equipment.
After sewage enters tank body 1 bottom from water inlet pipe 4, in order to make sewage be evenly distributed in tank body 1 bottom, thereby the effect of improve filtering is provided with water distributor 14 at the water outlet of water inlet pipe 4, and the sewage that utilizes 14 pairs of water distributors to enter tank body 1 bottom evenly distributes.
Utilize jet current principle, the exit of described inlet pipe 5 is provided with nozzle 15, pressurized air is promoted to more filtrate 2 in solid-liquid separator 7 and then cleans by filtrate riser tube 6 through forming high velocity air generation negative pressure after nozzle 15, can greatly accelerate the cleaning interval of filtrate 2.And can regulate air flow quantity by nozzle 15, and be easy to realize the control to filtrate 2 flushing doses, satisfy in the different demand of different quality condition filtrate flushing dose, reduce to greatest extent energy consumption.
Moreover described aerating biological filtering pot need to overhaul it in use for some time usually, and for convenient for maintaining personnel's upkeep operation, described tank body 1 bottom is provided with inspection window, and inspection window place's sealing is provided with cover plate 16.
Claims (9)
1. aerating biological filtering pot, comprise tank body (1), be filled with filtrate (2) in tank body (1), the top of described tank body (1) is provided with clean water overflow mouth (3), it is characterized in that: be provided with water inlet pipe (4) in described tank body (1), inlet pipe (5), filtrate riser tube (6), solid-liquid separator (7), gas pipe (8), described gas pipe (8) is arranged on water inlet pipe (4), be connected with aeration flexible pipe (9) on gas pipe (8), described solid-liquid separator (7) is positioned at the top of tank body (1), the water-in of described water inlet pipe (4) is in communication with the outside, the water outlet of water inlet pipe (4) is positioned at tank body (1) bottom, described filtrate riser tube (6) upper end is connected on solid-liquid separator (7), the lower end of filtrate riser tube (6) is positioned at tank body (1) bottom, the inlet mouth of described inlet pipe (5) is in communication with the outside, the air outlet of inlet pipe (5) is positioned at the lower port of filtrate riser tube (6) and air outlet towards filtrate riser tube (6), the solid outlet place of described solid-liquid separator (7) is connected with filtering material cleaning device (11), the liquid outlet of solid-liquid separator (7) is connected with the water shoot (10) that is in communication with the outside, the outlet of described filtering material cleaning device (11) and tank body (1) internal communication.
2. aerating biological filtering pot as claimed in claim 1, it is characterized in that: described solid-liquid separator (7) comprises the shell (71) of sealing, be provided with inner casing (72) in described shell (71), described inner casing (72) is divided into center cavity (73) with the inner chamber of shell (71) and is positioned at the annular chamber (74) in center cavity (73) outside, the upper end of filtrate riser tube (6) is positioned at center cavity (73), be provided with overflow weir (75) on the sidewall of inner casing (72), the liquid exit that opening forms described solid-liquid separator (7) is set on the sidewall of shell (71), bottom at inner casing (72) arranges the solid outlet that opening forms described solid-liquid separator (7).
3. aerating biological filtering pot as claimed in claim 2, it is characterized in that: described filtering material cleaning device (11) is made of urceolus (110) and the inner core (111) that is positioned at urceolus (110), gap between inner core (111) and urceolus (110) consists of filtrate flushing channel (112), the upper end of described filtrate flushing channel (112) is communicated with the solid outlet of solid-liquid separator (7), and the lower end of described filtrate flushing channel (112) is the outlet of filtering material cleaning device (11).
4. aerating biological filtering pot as claimed in claim 3, it is characterized in that: described filtrate flushing channel (112) has a plurality of kinks.
5. the described aerating biological filtering pot of any one claim according to claim 1 to 4, it is characterized in that: the effluent weir (12) that is provided with annular in described tank body (1), described effluent weir (12) is positioned at the top of tank body (1) and forms interlayer cavity (13) with the sidewall of tank body (1), and described interlayer cavity (13) is communicated with clean water overflow mouth (3).
6. aerating biological filtering pot as claimed in claim 5 is characterized in that: described overflow weir (75) is positioned at the end face below of effluent weir (12).
7. aerating biological filtering pot as claimed in claim 6, it is characterized in that: the water outlet of described water inlet pipe (4) is provided with water distributor (14).
8. aerating biological filtering pot as claimed in claim 7, it is characterized in that: the exit of described inlet pipe (5) is provided with nozzle (15).
9. aerating biological filtering pot as claimed in claim 8 is characterized in that: described tank body (1) bottom is provided with inspection window, and inspection window place's sealing is provided with cover plate (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205982012U CN202924819U (en) | 2012-11-14 | 2012-11-14 | Aeration biological filter tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205982012U CN202924819U (en) | 2012-11-14 | 2012-11-14 | Aeration biological filter tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202924819U true CN202924819U (en) | 2013-05-08 |
Family
ID=48214801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205982012U Withdrawn - After Issue CN202924819U (en) | 2012-11-14 | 2012-11-14 | Aeration biological filter tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202924819U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102923842A (en) * | 2012-11-14 | 2013-02-13 | 四川人福生物环保有限公司 | Aerated biological filtration tank |
| CN103570130A (en) * | 2013-11-21 | 2014-02-12 | 绿地环保科技股份有限公司 | Four-in-one sewage treatment equipment |
| CN109179642A (en) * | 2018-11-12 | 2019-01-11 | 新乡市绿丰环保工程有限公司 | Continous way aeration and biological device and its operation method |
| CN111573899A (en) * | 2020-05-28 | 2020-08-25 | 新昌县伯澜环保科技有限公司 | Industrial sewage treatment equipment |
-
2012
- 2012-11-14 CN CN2012205982012U patent/CN202924819U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102923842A (en) * | 2012-11-14 | 2013-02-13 | 四川人福生物环保有限公司 | Aerated biological filtration tank |
| CN102923842B (en) * | 2012-11-14 | 2014-07-30 | 四川人福生物环保有限公司 | Aerated biological filtration tank |
| CN103570130A (en) * | 2013-11-21 | 2014-02-12 | 绿地环保科技股份有限公司 | Four-in-one sewage treatment equipment |
| CN103570130B (en) * | 2013-11-21 | 2015-08-05 | 绿地环保科技股份有限公司 | Four-in-one sewage treatment equipment |
| CN109179642A (en) * | 2018-11-12 | 2019-01-11 | 新乡市绿丰环保工程有限公司 | Continous way aeration and biological device and its operation method |
| CN111573899A (en) * | 2020-05-28 | 2020-08-25 | 新昌县伯澜环保科技有限公司 | Industrial sewage treatment equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103771605B (en) | Onboard micro-filtration algae removal system and algae removal method | |
| CN202924819U (en) | Aeration biological filter tank | |
| CN206915837U (en) | A kind of MBR film sewage treatment devices | |
| CN102923842B (en) | Aerated biological filtration tank | |
| CN110078302A (en) | One kind being based on MBR film sewage treatment device and its method | |
| CN201578891U (en) | Novel sand filter | |
| CN111533387A (en) | Cylindrical domestic sewage treatment integrated equipment | |
| CN104140172A (en) | Seawater desalination pretreatment method | |
| CN201399286Y (en) | Online completely-automatic back-washing filter system | |
| CN108264175A (en) | A kind of Domestic sewage treatment device | |
| CN215250245U (en) | Aquaculture normal water treatment multifunctional integrated machine | |
| CN201169556Y (en) | Movable sewage treating device | |
| CN208648924U (en) | A kind of municipal domestic sewage treatment device | |
| CN202924854U (en) | Flocculation rotary table filter tank of sewage treatment | |
| CN208732720U (en) | A kind of cities and towns integrated sewage treating apparatus with plurality of operating modes | |
| CN206767872U (en) | A kind of Domestic sewage treatment device | |
| CN201572551U (en) | Hydraulic high-efficient energy-saving circulating filter | |
| CN217593924U (en) | Air-water washing gravity type valveless filter | |
| CN104961265A (en) | Six-stage bottom-mounted modular double-water double-membrane water purifier | |
| CN212451069U (en) | Cylindrical domestic sewage treatment integrated equipment | |
| CN203002051U (en) | Self-cleaning active sand filtering basin | |
| CN204973191U (en) | Continuous szyrt filter equipment of many bins of multistage water distribution | |
| CN204910911U (en) | High -efficient active sand filter | |
| CN214399922U (en) | Efficient label-lifting transformation processing device | |
| CN220034174U (en) | Novel W inorganic film treatment equipment combined with sedimentation tank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130508 Effective date of abandoning: 20140730 |
|
| RGAV | Abandon patent right to avoid regrant |