CN113443708A - Connecting and fixing device for denitrification deep-bed filter bricks - Google Patents

Connecting and fixing device for denitrification deep-bed filter bricks Download PDF

Info

Publication number
CN113443708A
CN113443708A CN202110925290.0A CN202110925290A CN113443708A CN 113443708 A CN113443708 A CN 113443708A CN 202110925290 A CN202110925290 A CN 202110925290A CN 113443708 A CN113443708 A CN 113443708A
Authority
CN
China
Prior art keywords
connecting device
filter
denitrification deep
brick
broadside
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.)
Granted
Application number
CN202110925290.0A
Other languages
Chinese (zh)
Other versions
CN113443708B (en
Inventor
刘晓辉
陈学军
李叶澄
史小雪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huatian Engineering and Technology Corp MCC
Original Assignee
Huatian Engineering and Technology Corp MCC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huatian Engineering and Technology Corp MCC filed Critical Huatian Engineering and Technology Corp MCC
Priority to CN202110925290.0A priority Critical patent/CN113443708B/en
Publication of CN113443708A publication Critical patent/CN113443708A/en
Application granted granted Critical
Publication of CN113443708B publication Critical patent/CN113443708B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/28Anaerobic digestion processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/28Anaerobic digestion processes
    • C02F3/2866Particular arrangements for anaerobic reactors
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2203/00Apparatus and plants for the biological treatment of water, waste water or sewage
    • C02F2203/006Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

The invention discloses a connecting and fixing device for denitrification deep bed filter bricks, and belongs to the technical field of filter brick fixing. The filter comprises a wide edge connecting device, a long edge connecting device and filter bricks, wherein the wide edge connecting device and the long edge connecting device are respectively connected with the filter bricks, the wide edges of the filter bricks are connected with the side wall of the filter tank through the wide edge connecting device, the long edge connecting device is arranged between the filter bricks which are arranged in parallel, and the long edges of the filter bricks are connected with the side wall of the filter tank through the long edge connecting device. The wide-side connecting device and the long-side connecting device selected by the invention have elasticity, can resist temperature stress generated by water temperature change, can prevent the filter bricks from cracking due to the temperature stress, enables the process of the denitrification deep-bed filter tank to be more suitable for sewage with larger water temperature change, can overcome the defects of easy blockage, difficult cleaning and difficult replacement of the denitrification deep-bed filter bricks, perfects the application of the denitrification deep-bed filter bricks, and further improves the treatment efficiency of the denitrification deep-bed filter tank on the wastewater.

Description

Connecting and fixing device for denitrification deep-bed filter bricks
Technical Field
The invention relates to the technical field of deep bed filter tank fixing, in particular to a connecting and fixing device for denitrification deep bed filter bricks.
Background
Most of common filter bricks of the denitrification deep bed filter tank in the water treatment are connected through clamping head clamping grooves at present, most of gaps among the filter bricks which are arranged side by side and gaps among the filter bricks and the side wall of the filter tank are poured through concrete, thus, although the filter bricks are tightly connected into a whole and firmly connected with the bottom of the filter tank, certain disadvantages exist, because the filter bricks are tightly connected, when the temperature change of the sewage entering the filter tank is extremely large, the connection parts of the filter bricks are damaged due to temperature stress, because the filter bricks form a whole and are firmly connected with the bottom of the filter tank, the damaged filter bricks can not be independently disassembled and replaced, when the filter tank runs for a certain time, because fine silt generated by continuous abrasion of the filter material under the action of air and water during backwashing is difficult to clean after entering the flow channel of the filter brick, further influencing the water and gas distribution effect of the filter brick, and the defects limit the application of the denitrification deep bed filter brick.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to overcome the defects of the prior art and provides a connecting and fixing device of a denitrification deep-bed filter brick, which can overcome the defects of easy blockage, difficult cleaning and difficult replacement of the denitrification deep-bed filter brick, perfects the application of the denitrification deep-bed filter brick, does not influence the water and gas distribution effect of the filter brick, and further improves the treatment efficiency of a denitrification deep-bed filter on waste water.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the connecting and fixing device for the denitrification deep bed filter bricks comprises a wide edge connecting device, a long edge connecting device and the filter bricks, wherein the wide edge connecting device and the long edge connecting device are respectively connected with the filter bricks, the wide edges of the filter bricks are connected with the side walls of a filter tank through the wide edge connecting device, the long edge connecting device is arranged between the filter bricks which are arranged in parallel, and the long edges of the filter bricks are connected with the side walls of the filter tank through the long edge connecting device.
Furthermore, the cross section of the wide side connecting device is in a shape of a Chinese character hui, an inner groove water passing channel is formed in the wide side connecting device, the outer side of the wide side connecting device is surrounded by a rigid framework, and an inflatable air bag is arranged on the outer side of the rigid framework.
Furthermore, the surface of the filter brick is provided with a filter brick water distribution channel, and the outer side of the filter brick is provided with a clamping head.
Furthermore, the connection part of the wide-side connecting device and the filter brick water distribution channel is provided with a communication hole, the communication hole is communicated with the filter brick water distribution channel and the inner groove water passing channel, and the end part of the inner groove water passing channel is connected with a water inlet pipe.
Further, long limit connecting device include the rubber gasbag body, the side of the rubber gasbag body is provided with the draw-in groove, the filter brick passes through the dop and is connected with the draw-in groove.
Further, the side wall of the clamping groove is provided with a plurality of protruding rubber bubbles, a plurality of circular concave holes are formed in the clamping head of the filter brick, and the protruding rubber bubbles on the side wall of the clamping groove are tightly combined with the circular concave holes in the clamping head after being inflated.
Furthermore, the junction of the broadside connecting device and the filter brick water distribution channel is provided with three holes, the three holes respectively correspond to a trapezoidal air-water distribution groove in the middle of the filter brick and triangular air-water distribution grooves on two sides, the rectangular communication hole corresponding to the trapezoidal air-water distribution groove in the middle is a triangular communication triangular hole corresponding to the triangular air-water distribution grooves on two sides, and the three holes are all positioned on the lower part of the air-water distribution groove.
Furthermore, the bottoms of the broadside connecting device and the long-edge connecting device are provided with anchoring bolts, the broadside connecting device and the long-edge connecting device are respectively connected with the bottom of the filter tank through the anchoring bolts, the anchoring bolts are rubber air bags and can be tightly combined with the bottom of the filter tank after being inflated, and the anchoring bolts can be separated from the filter tank after being deflated.
Furthermore, the outside of the wide side connecting device and the long side connecting device is provided with an air pressure monitoring device.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
the invention connects the filter bricks with the side wall of the filter tank through the wide edge connecting device, the long edge connecting device is connected with the chucks on the filter bricks through the side edge clamping grooves, the rubber air bag body can fill gaps among the filter bricks after being inflated, and the clamping grooves are tightly combined with the chucks on the filter bricks, the wide edge connecting device and the long edge connecting device have elasticity, can resist temperature stress generated by water temperature change, can prevent the filter bricks from cracking due to the temperature stress, so that the denitrification deep bed filter tank process is more suitable for sewage with larger water temperature change, even if part of the filter bricks are damaged due to other external forces, the filter bricks which are placed side by side can be loosened by discharging gas in the connecting air bags, thereby being very easy to disassemble the damaged filter bricks for replacement, and after the re-inflation is completed for overhaul, the filter bricks and the filter tank can be tightly combined, the invention can solve the problem that the denitrification deep bed filter bricks are easy to block, the defects of difficult cleaning and difficult replacement improve the application of the denitrification deep bed filter brick, cannot influence the water and gas distribution effect of the filter brick, and further improves the treatment efficiency of the denitrification deep bed filter on the wastewater.
Drawings
FIG. 1 is a diagram showing the effect of the overall structure arrangement of the present invention;
FIG. 2 is a cross-sectional view of a broadside connection assembly of the present invention;
FIG. 3 is an illustration of the effect of the contact surface of the broadside connector of the present invention with a filter block;
fig. 4 is a longitudinal sectional view of the long side connection device of the present invention.
In the figure: 1. a broadside connecting device; 11. an inner tank water passage; 12. a rigid skeleton; 13. an inflatable bladder; 14. a water inlet pipe; 15. communicating the holes; 16. the triangular holes are communicated; 2. a long side connection device; 21. a rubber bladder body; 22. a card slot; 23. rubber bubbles; 3. filtering bricks; 31. a filter brick water distribution channel; 32. clamping a head; 321. a circular concave hole; 4. and (5) anchoring the bolt.
Detailed Description
The invention is further described with reference to the following figures and examples:
example 1
As can be seen from figure 1, the connection fixing device of denitrification deep bed filter brick of this embodiment, including broadside connecting device 1, long limit connecting device 2 and filter brick 3, broadside connecting device 1, long limit connecting device 2 is made by rubber materials, broadside connecting device 1, long limit connecting device 2 is connected with filter brick 3 respectively, the broadside of filter brick 3 passes through broadside connecting device 1 and is connected with the filtering pond lateral wall, long limit connecting device 2 sets up between the filter brick 3 of installing side by side, the long limit of filter brick 3 passes through long limit connecting device 2 and is connected with the filtering pond lateral wall.
As can be seen from fig. 2-3, the cross section of the broadside connecting device 1 is in a shape of Chinese character hui, an inner groove water passing channel 11 is arranged inside the broadside connecting device 1, the outer side of the broadside connecting device 1 is surrounded by a rigid framework 12 and is not easy to deform, an inflatable air bag 13 is arranged on the outer side of the rigid framework 12, and the outer side of the rigid framework is protruded after being inflated.
The surface of the filter brick 3 is provided with a filter brick water distribution channel 31, and the outer side of the filter brick 3 is provided with a clamping head 32.
The filter brick water distribution channel 31 comprises a trapezoidal gas-water distribution groove positioned in the middle of the filter brick 3 and triangular gas-water distribution grooves positioned on two sides of the trapezoidal gas-water distribution groove.
The connection part of the wide edge connecting device 1 and the filter brick water distribution channel 31 is provided with a communicating hole 15, the communicating hole 15 is communicated with the filter brick water distribution channel 31 and the inner groove water passing channel 11, the end part of the inner groove water passing channel 11 is connected with a water inlet pipe 14, the pipe diameter of the water inlet pipe 14 can be determined according to actual conditions and is used for flushing fine silt entering the filter brick water distribution channel 31, and the water source can adopt the water outlet of a denitrification filter.
As can be seen from fig. 4, the long-side connecting device 2 includes a rubber air bag body 21, a clamping groove 22 is formed in a side edge of the rubber air bag body 21, the clamping groove 22 is of a rigid structure, and the filter brick 3 is connected with the clamping groove 22 through a clamping head 32.
Be provided with bellied rubber bubble 23 on the draw-in groove 22 lateral wall, a plurality of circular shrinkage pool 321 have been seted up on the dop 32 of filter brick 3, generally set up four, bellied rubber bubble 23 aerifys on the draw-in groove 22 lateral wall after with the circular shrinkage pool 321 zonulae occludens on the dop 32, long limit connecting device 2 is used for connecting fixed filter brick 3 of installing side by side, can fill up the gap between the filter brick 3 after the rubber air bag body 21 aerifys, and make draw-in groove 22 and the dop 32 zonulae occludens on the filter brick 3.
The connection part of the wide-edge connecting device 1 and the filter brick water distribution channel 31 is provided with three holes which respectively correspond to a trapezoidal air-water distribution groove in the middle of the filter brick 3 and triangular air-water distribution grooves on two sides, a rectangular communication hole 15 corresponding to the trapezoidal air-water distribution groove in the middle, and a triangular communication triangular hole 16 corresponding to the triangular air-water distribution grooves on two sides, wherein the three holes are all positioned at the lower part of the air-water distribution grooves.
The bottoms of the broadside connecting device 1 and the long-edge connecting device 2 are provided with anchoring bolts 4, bolt holes are drilled in the bottom of the filter tank, the diameter of each bolt hole is equal to that of each anchoring bolt 4, so that the anchoring bolts 4 can be successfully plugged in, the broadside connecting device 1 and the long-edge connecting device 2 are respectively connected with the bottom of the filter tank through the anchoring bolts 4, the anchoring bolts 4 are rubber air bags and can be tightly combined with the bottom of the filter tank after being inflated, and the air leakage can be separated from the filter tank.
And air pressure monitoring devices are arranged outside the wide side connecting device 1 and the long side connecting device 2, and when the pressure in the rubber air bag is reduced to a certain limit value, the compressed air tank automatically supplies air to the air bag.
According to the invention, the filter bricks 3 are connected with the side wall of the filter tank through the wide edge connecting device 1, the bottom of the filter bricks is anchored at the bottom of the filter tank, the long edge connecting device 2 is connected with the chucks 32 on the filter bricks 3 through the side clamping grooves 22 of the long edge connecting device, the rubber air bag body 21 can fill gaps between the filter bricks 3 after being inflated, and the clamping grooves 22 are tightly combined with the chucks 32 on the filter bricks 3, the long edge connecting device 2 is used for fixing the filter bricks 3 which are arranged side by side and is anchored at the bottom of the filter tank, the wide edge connecting device 1 and the long edge connecting device 2 both have elasticity, can resist temperature stress generated by water temperature change, can prevent the filter bricks 3 from generating cracks due to the temperature stress, enables the denitrification deep bed filter tank process to be more suitable for sewage with larger water temperature change, and can also enable the filter bricks 3 arranged side by releasing gas in the connecting air bag even if part of the filter bricks 3 are damaged due to other external forces, the invention can solve the defects of easy blockage, difficult cleaning and difficult replacement of the denitrification deep bed filter bricks, perfects the application of the denitrification deep bed filter bricks 3, does not influence the water and gas distribution effect of the filter bricks, and further improves the treatment efficiency of the denitrification deep bed filter to wastewater.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims (9)

1. The utility model provides a connection fixing device of denitrification deep bed filter brick, includes broadside connecting device (1), long limit connecting device (2) and filter brick (3), its characterized in that: broadside connecting device (1), long limit connecting device (2) be connected with filter brick (3) respectively, the broadside of filter brick (3) passes through broadside connecting device (1) and is connected with the filtering pond lateral wall, long limit connecting device (2) set up between filter brick (3) of installing side by side, the long limit of filter brick (3) is connected with the filtering pond lateral wall through long limit connecting device (2).
2. The connecting and fixing device of the denitrification deep bed filter block according to claim 1, characterized in that: the cross section of the broadside connecting device (1) is in a shape of Chinese character hui, an inner groove water passing channel (11) is formed in the broadside connecting device (1), the outer side of the broadside connecting device (1) is enclosed by a rigid framework (12), and an inflatable air bag (13) is arranged on the outer side of the rigid framework (12).
3. The connecting and fixing device of the denitrification deep bed filter block according to claim 2, characterized in that: the surface of the filter brick (3) is provided with a filter brick water distribution channel (31), and the outer side of the filter brick (3) is provided with a clamping head (32).
4. The connecting and fixing device of the denitrification deep bed filter block according to claim 3, characterized in that: the connecting part of the wide-side connecting device (1) and the filter brick water distribution channel (31) is provided with a communicating hole (15), the communicating hole (15) is communicated with the filter brick water distribution channel (31) and the inner groove water passing channel (11), and the end part of the inner groove water passing channel (11) is connected with a water inlet pipe (14).
5. The connecting and fixing device of the denitrification deep bed filter block according to claim 3, characterized in that: the long-edge connecting device (2) comprises a rubber air bag body (21), a clamping groove (22) is formed in the side edge of the rubber air bag body (21), and the filter brick (3) is connected with the clamping groove (22) through a clamping head (32).
6. The connecting and fixing device of the denitrification deep bed filter block according to claim 5, characterized in that: the side wall of the clamping groove (22) is provided with a plurality of convex rubber bubbles (23), a plurality of circular concave holes (321) are formed in the clamping head (32) of the filter brick (3), and the convex rubber bubbles (23) on the side wall of the clamping groove (22) are tightly combined with the circular concave holes (321) in the clamping head (32) after being inflated.
7. The connecting and fixing device of the denitrification deep bed filter block according to claim 3, characterized in that: the wide edge connecting device (1) and the junction of filter brick water distribution channel (31) open and have the hole, the hole is equipped with three places, corresponds trapezoidal air water distribution groove and both sides triangle air water distribution groove in the middle of filter brick (3) respectively, corresponds for UNICOM hole (15) of rectangle with trapezoidal air water distribution groove in the middle of, corresponds for triangle-shaped UNICOM triangle hole (16) with both sides triangle air water distribution groove, three places hole all is located air water distribution groove lower part.
8. The connecting and fixing device of the denitrification deep bed filter block according to claim 1, characterized in that: the bottom of broadside connecting device (1), long limit connecting device (2) all be provided with anchor bolt (4), broadside connecting device (1), long limit connecting device (2) are tied through anchor bolt (4) respectively and are connected with the filtering pond bottom, anchor bolt (4) are the rubber air bag, can combine closely with the filtering pond bottom after aerifing, can separate with the filtering pond after disappointing.
9. The connecting and fixing device of the denitrification deep bed filter block according to claim 1, characterized in that: and air pressure monitoring devices are arranged outside the wide side connecting device (1) and the long side connecting device (2).
CN202110925290.0A 2021-08-12 2021-08-12 Connecting and fixing device for denitrification deep bed filter bricks Active CN113443708B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110925290.0A CN113443708B (en) 2021-08-12 2021-08-12 Connecting and fixing device for denitrification deep bed filter bricks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110925290.0A CN113443708B (en) 2021-08-12 2021-08-12 Connecting and fixing device for denitrification deep bed filter bricks

Publications (2)

Publication Number Publication Date
CN113443708A true CN113443708A (en) 2021-09-28
CN113443708B CN113443708B (en) 2024-06-07

Family

ID=77818498

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110925290.0A Active CN113443708B (en) 2021-08-12 2021-08-12 Connecting and fixing device for denitrification deep bed filter bricks

Country Status (1)

Country Link
CN (1) CN113443708B (en)

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012065368A1 (en) * 2010-11-19 2012-05-24 泉州市丰泽福帆机械有限公司 Brick clamping device
CN102701435A (en) * 2012-06-07 2012-10-03 霍祥明 Method for connecting filter bricks and filter tank
CN206126976U (en) * 2016-10-14 2017-04-26 浙江德安科技股份有限公司 Dark bed denitrification biological filter
CN107686303A (en) * 2017-08-30 2018-02-13 南京大学 A kind of novel modularized water distribution gas distribution filter block and its method for forming backwash module
CN207142917U (en) * 2017-08-13 2018-03-27 杨华 A kind of modified deep-bed filter brick
CN108328729A (en) * 2018-02-11 2018-07-27 杭州宸祥环境工程有限公司 A kind of S types filter block water distribution system
CN209575919U (en) * 2018-12-24 2019-11-05 浙江中昌水处理科技有限公司 It is a kind of without splicing water distribution gas distribution plastic filter tiles
CN212789934U (en) * 2020-07-01 2021-03-26 湖北瀚能环保工程有限公司 Double-deck filter brick inner chamber and exocoel draw-in groove formula sealing joint design
CN213416425U (en) * 2020-09-28 2021-06-11 天津锐创环保集团有限公司 Air-water distribution filter brick of denitrification biological filter
CN112939215A (en) * 2019-12-10 2021-06-11 浙江中昌水处理科技有限公司 Filter brick for denitrification deep bed filter
CN213595982U (en) * 2020-08-29 2021-07-02 湖南中集环境投资有限公司 Novel multistage water and gas distribution filter brick for denitrification deep bed filter
CN213741742U (en) * 2020-10-24 2021-07-20 福建华航建设集团有限公司 Wall structure is built in room
CN215249851U (en) * 2021-08-12 2021-12-21 中冶华天工程技术有限公司 Connecting and fixing device for denitrification deep-bed filter bricks

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012065368A1 (en) * 2010-11-19 2012-05-24 泉州市丰泽福帆机械有限公司 Brick clamping device
CN102701435A (en) * 2012-06-07 2012-10-03 霍祥明 Method for connecting filter bricks and filter tank
CN206126976U (en) * 2016-10-14 2017-04-26 浙江德安科技股份有限公司 Dark bed denitrification biological filter
CN207142917U (en) * 2017-08-13 2018-03-27 杨华 A kind of modified deep-bed filter brick
CN107686303A (en) * 2017-08-30 2018-02-13 南京大学 A kind of novel modularized water distribution gas distribution filter block and its method for forming backwash module
CN108328729A (en) * 2018-02-11 2018-07-27 杭州宸祥环境工程有限公司 A kind of S types filter block water distribution system
CN209575919U (en) * 2018-12-24 2019-11-05 浙江中昌水处理科技有限公司 It is a kind of without splicing water distribution gas distribution plastic filter tiles
CN112939215A (en) * 2019-12-10 2021-06-11 浙江中昌水处理科技有限公司 Filter brick for denitrification deep bed filter
CN212789934U (en) * 2020-07-01 2021-03-26 湖北瀚能环保工程有限公司 Double-deck filter brick inner chamber and exocoel draw-in groove formula sealing joint design
CN213595982U (en) * 2020-08-29 2021-07-02 湖南中集环境投资有限公司 Novel multistage water and gas distribution filter brick for denitrification deep bed filter
CN213416425U (en) * 2020-09-28 2021-06-11 天津锐创环保集团有限公司 Air-water distribution filter brick of denitrification biological filter
CN213741742U (en) * 2020-10-24 2021-07-20 福建华航建设集团有限公司 Wall structure is built in room
CN215249851U (en) * 2021-08-12 2021-12-21 中冶华天工程技术有限公司 Connecting and fixing device for denitrification deep-bed filter bricks

Also Published As

Publication number Publication date
CN113443708B (en) 2024-06-07

Similar Documents

Publication Publication Date Title
CN215249851U (en) Connecting and fixing device for denitrification deep-bed filter bricks
CN106925126A (en) A kind of soft flat membrane components of new MBR and its membrane module
CN204709895U (en) A kind of Continuous Flow sand filter
CN103465358A (en) Horizontal type rubber air-bag core pulling column for gypsum hollow blocks
CN113443708A (en) Connecting and fixing device for denitrification deep-bed filter bricks
CN214344654U (en) Filter material for water treatment
CN202081668U (en) Lifting type floating swimming pool
CN205856908U (en) A kind of deinking flotation cell
CN105903396B (en) A kind of cumulative Gas Stirring method and device
KR100986820B1 (en) Anti-clogging aeration apparatus and water purification apparatus using the same
CN208995197U (en) The denitrification bio-filter of whole water inlet subregion aeration backwash
CN206571014U (en) Close rib diaphragm capsule floor plates
CN100482310C (en) Adjustable fiber filter
CN107055771B (en) Water and gas distribution system and backwashing process thereof
CN203738974U (en) Rubber inflatable core mold for prefabricating hollow beam of highway bridge
CN112495007A (en) Filter material for water treatment
CN112726808A (en) Commercial concrete integral septic tank and forming method thereof
JP2004174287A (en) Apparatus and method for purifying water
CN207186405U (en) A kind of mattress of flexible body valve core composed with charge and discharge
CN113877257B (en) Reinforced concrete structure of filter tank of water plant
CN209081554U (en) Nanometer aeration aerator
CN212315683U (en) Firm in structure's prefabricated biochemical pond
CN115126009B (en) Device for reducing relative compactness of saturated sand field and construction method
CN221027922U (en) Biological filter
CN219239361U (en) Slag overflow fine sand recovery device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant