CN214115269U

CN214115269U - Denitrification deep bed filter device

Info

Publication number: CN214115269U
Application number: CN202022452128.5U
Authority: CN
Inventors: 赵亮; 郭常慧
Original assignee: Hebei Yuejing Environmental Protection Technology Co ltd
Current assignee: Hebei Yuejing Environmental Protection Technology Co ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-09-03
Anticipated expiration: 2030-10-29

Abstract

The utility model discloses a denitrification deep bed filtering pond device, including the denitrification deep bed filtering pond, the lower extreme fixedly connected with biological filter bed in denitrification deep bed filtering pond, the lower extreme fixedly connected with play water distribution area of biological filter bed, the lower extreme fixedly connected with base in play water distribution area, the outside fixedly connected with aeration pipe and the outlet pipe in play water distribution area, the outside fixedly connected with maintenance section of thick bamboo of biological filter bed, the upper end fixedly connected with intake pool in denitrification deep bed filtering pond. A denitrification deep bed filtering pond device, focus on the advanced treatment stage after the second grade biochemical treatment, add the deep bed filtering pond, through the biomembrane effect to biofilm carrier, the reaction condition of control advantage for the denitrification flora becomes the dominant flora, automatic dosing system of rethread automatic temperature control and carbon source carries out accurate control, reaches the optimization of getting rid of total nitrogen and gets rid of, brings better use prospect.

Description

Denitrification deep bed filter device

Technical Field

The utility model relates to a sewage treatment field, in particular to denitrification deep bed filtering pond device.

Background

A deep bed filter tank device is a supporting device for sewage treatment, biological denitrification of sewage generally adopts an anoxic section in a secondary biochemical reaction, nitrate nitrogen generated by nitrification is subjected to denitrification by the metabolic action of denitrifying bacteria to form nitrogen for evacuation, so that total nitrogen in the sewage is removed, the requirement of total nitrogen index in pollutant discharge standard of municipal sewage treatment plant (GB18918-2002) cannot be met by the secondary biochemical reaction, at present, the addition of external carbon sources such as glucose, sodium acetate and the like in the anoxic tank is considered more and more, a proper carbon-nitrogen nutrition ratio is provided, so that the denitrifying bacteria become dominant bacteria, and the purpose of removing the total nitrogen is achieved.

The existing deep bed filter device has certain defects when in use, the adding amount of a carbon source is not easy to master, and the anoxic environment in the stage can not be effectively controlled, so that the removing efficiency of the stage can not meet the requirement far, the treatment cost is higher, the use of people is not facilitated, certain adverse effects are brought to the use process of people, and therefore, the denitrification deep bed filter device is provided.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The not enough to prior art, the utility model provides a denitrification deep bed filtering pond device emphasizes on the advanced treatment stage after the biochemical treatment of second grade, adds the deep bed filtering pond, through the biomembrane effect to biofilm carrier, controls the reaction condition of advantage for denitrification flora becomes the dominant flora, and automatic dosing system of rethread automatic temperature monitoring and carbon source carries out accurate control, reaches the optimization of getting rid of total nitrogen and gets rid of, can effectively solve the problem in the background art.

(II) technical scheme

In order to achieve the above purpose, the utility model adopts the following technical scheme: a denitrification deep bed filter device, which comprises a denitrification deep bed filter, wherein the lower end of the denitrification deep bed filter is fixedly connected with a biological filter bed, the lower end of the biological filter bed is fixedly connected with a water outlet and distribution area, the lower end of the water outlet and distribution area is fixedly connected with a base, the outer side of the water outlet and distribution area is fixedly connected with an aeration pipe and a water outlet pipe, the outer side of the biological filter bed is fixedly connected with an overhaul cylinder, the upper end of the denitrification deep bed filter tank is fixedly connected with a water inlet tank, the inner side of the water inlet tank is provided with a water collecting weir, a back flush water outlet pipe is arranged on one side of the water collecting weir, a second water inlet pipe, a carbon source adding pipe and a first water inlet pipe are arranged at the upper end of the water inlet tank, the bottom of the biological filter bed is provided with a filter plate, the outer side of the water outlet and distribution area is provided with an installation clamp, and the outer side of the installation clamp is provided with a backwashing water inlet pipe.

Preferably, a mounting seat is arranged between the denitrification deep-bed filter tank and the biological filter bed, the lower end of the denitrification deep-bed filter tank is fixedly connected with the upper end of the biological filter bed through the mounting seat, a welding seat is arranged between the biological filter bed and the water outlet and distribution area, and the lower end of the biological filter bed is fixedly connected with the upper end of the water outlet and distribution area through the welding seat.

Preferably, a welding support is arranged between the water outlet and distribution area and the base, the lower end of the water outlet and distribution area is fixedly connected with the upper end of the base through the welding support, and the outer side of the water outlet and distribution area is detachably connected with the outer wall of the backwashing water inlet pipe through an installation clamp.

Preferably, a mounting frame is arranged between the biological filter bed and the filter plate, and the lower end of the biological filter bed is detachably connected with the outer side of the filter plate through the mounting frame.

Preferably, a welding frame is arranged between the biological filter bed and the overhauling cylinder, and the outer wall of the biological filter bed is fixedly connected with one end of the overhauling cylinder through the welding frame.

Preferably, a mounting bracket is arranged between the second water inlet pipe and the carbon source adding pipe and the water inlet tank, and the outer side of the water inlet tank is fixedly connected with the outer walls of the second water inlet pipe and the carbon source adding pipe through the mounting bracket.

(III) advantageous effects

Compared with the prior art, the utility model provides a denitrification deep bed filtering pond device possesses following beneficial effect: the denitrification deep bed filter device focuses on the advanced treatment stage after secondary biochemical treatment, the deep bed filter is additionally arranged, the predominant reaction conditions are controlled through the action of a biological film of biological fillers, so that denitrification flora becomes predominant flora, then the optimized removal of total nitrogen is achieved through the automatic temperature monitoring and carbon source automatic feeding system, the denitrification reaction time is 1.8h, the total depth of the filter bed is 2.5m, the contact time is 1h, the ascending flow rate and the surface hydraulic load are 2.5m3/m2 h, the total nitrogen index can be reduced to 10-15mg/L from 25-50mg/L, the whole deep bed filter device is simple in structure and convenient to operate, and the using effect is better than that of the traditional mode.

Drawings

FIG. 1 is a schematic view of the overall structure of a denitrification deep-bed filter device of the present invention.

FIG. 2 is a schematic structural view of the whole plan view in the denitrification deep-bed filter device of the present invention.

FIG. 3 is a schematic structural view of the water outlet and distribution region in the denitrification deep-bed filter device of the present invention.

FIG. 4 is a schematic structural view of a biological filter bed in the denitrification deep-bed filter device of the present invention.

In the figure: 1. a denitrification deep bed filter; 2. a first water inlet pipe; 3. a water collection weir; 4. a biological filter bed; 5. filtering the plate; 6. an aeration pipe; 7. a water outlet pipe; 8. backwashing the water inlet pipe; 9. backwashing the water outlet pipe; 10. a maintenance cylinder; 11. a second water inlet pipe; 12. a carbon source feeding pipe; 13. a water inlet pool; 14. a water outlet and distribution area; 15. a base; 16. and (6) installing a clamp.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in figures 1-4, a denitrification deep bed filter device comprises a denitrification deep bed filter 1, a biological filter bed 4 is fixedly connected at the lower end of the denitrification deep bed filter 1, a water outlet and distribution area 14 is fixedly connected at the lower end of the biological filter bed 4, a base 15 is fixedly connected at the lower end of the water outlet and distribution area 14, an aerator pipe 6 and a water outlet pipe 7 are fixedly connected at the outer side of the water outlet and distribution area 14, an overhaul cylinder 10 is fixedly connected at the outer side of the biological filter bed 4, a water inlet tank 13 is fixedly connected at the upper end of the denitrification deep bed filter 1, a water collecting weir 3 is arranged at the inner side of the water inlet tank 13, a backwashing water outlet pipe 9 is arranged at one side of the water collecting weir 3, a second water inlet pipe 11 is arranged at the upper end of the water inlet tank 13, a carbon source adding pipe 12 and a first water inlet pipe 2, a filter plate 5 is arranged at the bottom of the biological filter bed 4, an installation clamp 16 is arranged on the outer side of the water outlet and distribution area 14, and a backwashing water inlet pipe 8 is arranged on the outer side of the installation clamp 16.

Furthermore, a mounting seat is arranged between the denitrification deep-bed filter 1 and the biological filter bed 4, the lower end of the denitrification deep-bed filter 1 is fixedly connected with the upper end of the biological filter bed 4 through the mounting seat, a welding seat is arranged between the biological filter bed 4 and the water outlet distribution area 14, and the lower end of the biological filter bed 4 is fixedly connected with the upper end of the water outlet distribution area 14 through the welding seat, so that the biological filter bed is convenient to mount and position and has the water distribution performance.

Furthermore, be provided with the welding support between water distribution area 14 and the base 15 goes out, the lower extreme of water distribution area 14 goes out and passes through the upper end fixed connection of welding support and base 15, and the outer wall that the installation clamp 16 is passed through with backwash inlet tube 8 in the outside of water distribution area 14 goes out is for dismantling being connected, is convenient for carry out sewage treatment operation.

Furthermore, a mounting frame is arranged between the biological filter bed 4 and the filter plate 5, the lower end of the biological filter bed 4 is detachably connected with the outer side of the filter plate 5 through the mounting frame, the filter material layer adopts a special ceramsite filter material, the particle size is 2-4mm, the porosity is high, the specific gravity is slightly larger than 1, the special ceramsite filter material is a heavy ceramsite filter material, the filter material has good structural strength and is not easy to break, meanwhile, the special ceramsite filter material is convenient for film hanging, the specific surface area is large, and the biological implantation growth is easy.

Furthermore, a welding frame is arranged between the biological filter bed 4 and the overhaul cylinder 10, and the outer wall of the biological filter bed 4 is fixedly connected with one end of the overhaul cylinder 10 through the welding frame, so that overhaul operation is facilitated.

Further, a mounting bracket is arranged between the second water inlet pipe 11 and the carbon source adding pipe 12 and the water inlet tank 13, the outer side of the water inlet tank 13 is fixedly connected with the outer walls of the second water inlet pipe 11 and the carbon source adding pipe 12 through the mounting bracket, the device is applied to advanced treatment of domestic sewage of 120m3/d in a town sewage treatment plant of Fujiyang Qian' an in Hebei, the project mainly collects and treats municipal sewage discharged by town living areas and nearby plants, the treated water reaches the discharge standard of pollutants for municipal sewage treatment plants (GB18918-2002), and the discharge standard of surface water IV is strived to reach.

The working principle is as follows: the utility model comprises a denitrification deep bed filter 1, a first water inlet pipe 2, a water collecting weir 3, a biological filter bed 4, a filter plate 5, an aeration pipe 6, a water outlet pipe 7, a backwashing water inlet pipe 8, a backwashing water outlet pipe 9, an overhaul cylinder 10, a second water inlet pipe 11, a carbon source adding pipe 12, a water inlet tank 13, a water outlet water distribution area 14, a base 15 and an installation clamp 16, the main structure can be made of steel or reinforced concrete, the effluent of a second sedimentation tank enters the water inlet tank 13 and the denitrification deep bed filter 1 through the second water inlet pipe 11 at the top of the device tank body, when the influent enters the second water inlet pipe 11 and the first water inlet pipe 2 of the deep bed filter, the added carbon source added by the carbon source adding pipe 12 is mixed, the biological filter bed 4 passes through the deep bed filter, the filter material layer adopts special ceramsite filter material, the particle size is 2-4mm, the porosity is higher, the specific gravity is slightly larger than 1, and is one of heavy ceramsite filter material, the filter material has good structural strength, is not easy to break, is convenient for film hanging, has larger specific surface area and is easy for biological implantation growth, under the action of the bottom aeration pipe 6, the filter layer of the filter bed is controlled in a facultative environment, under the condition, the mass propagation growth of denitrifying bacteria is controlled, the effluent passing through the filter bed layer enters the effluent water distribution area 14 through the special filter plate 5, flows out of the deep bed filter through the effluent water outlet pipe 7 and enters the next stage treatment process, the aeration pipe 6 is also arranged in the effluent water distribution area 14 and is used for providing aeration dissolved oxygen for the deep bed filter, the aeration pipe 6 can adjust the aeration amount, during the backwashing stage, the large-air-flow backwashing of the filter material can be realized, the air-water combined flushing can be realized by combining the external pressurized clear water of the backwashing water inlet pipe 8, the backwashing filter material layer of the water aeration-air water combined flushing can be fully cleaned by friction, the biological film falling off by backwashing can enter the effluent water outlet pipe 9 through the water collection weir 3 at the top of the deep bed filter, the denitrification deep bed filter 1 is provided with an online temperature sensor, a liquid level controller, an online dissolved oxygen tester, an online nitrate nitrogen analyzer and a water inlet COD analyzer, and establishes automatic addition of an external carbon source through a PLC program, so that accurate addition of medicine is realized, optimal control of total nitrogen in effluent is realized, low-cost operation is achieved, the concentration of total nitrogen is further reduced efficiently, and the quality of effluent is achieved.

It is noted that, herein, relational terms such as first and second (a, b, etc.) and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a deep bed filtering pond device of denitrification, includes deep bed filtering pond of denitrification (1), its characterized in that: the lower end of the denitrification deep bed filter (1) is fixedly connected with a biological filter bed (4), the lower end of the biological filter bed (4) is fixedly connected with an effluent water distribution area (14), the lower end of the effluent water distribution area (14) is fixedly connected with a base (15), the outer side of the effluent water distribution area (14) is fixedly connected with an aeration pipe (6) and a water outlet pipe (7), the outer side of the biological filter bed (4) is fixedly connected with an overhaul cylinder (10), the upper end of the denitrification deep bed filter (1) is fixedly connected with a water inlet tank (13), the inner side of the water inlet tank (13) is provided with a water collection weir (3), one side of the water collection weir (3) is provided with a backwashing water outlet pipe (9), the upper end of the water inlet tank (13) is provided with a second water inlet pipe (11), a carbon source adding pipe (12) and a first water inlet pipe (2), the bottom of the biological filter bed (4) is provided with a filter plate (5), and an installation clamp (16) is arranged on the outer side of the water outlet and distribution area (14), and a backwashing water inlet pipe (8) is arranged on the outer side of the installation clamp (16).

2. A denitrification deep bed filter apparatus according to claim 1, wherein: be provided with the mount pad between denitrification deep bed filtering pond (1) and biological filter (4), the lower extreme of denitrification deep bed filtering pond (1) passes through the upper end fixed connection of mount pad and biological filter (4), be provided with the welded seat between biological filter (4) and the delivery water distribution area (14), the lower extreme of biological filter (4) passes through the welded seat and the delivery water distribution area's (14) upper end fixed connection.

3. A denitrification deep bed filter apparatus according to claim 1, wherein: a welding support is arranged between the water outlet and water distribution area (14) and the base (15), the lower end of the water outlet and water distribution area (14) is fixedly connected with the upper end of the base (15) through the welding support, and the outer side of the water outlet and water distribution area (14) is detachably connected with the outer wall of the backwashing water inlet pipe (8) through an installation clamp (16).

4. A denitrification deep bed filter apparatus according to claim 1, wherein: the biological filter is characterized in that a mounting frame is arranged between the biological filter bed (4) and the filter plate (5), and the lower end of the biological filter bed (4) is detachably connected with the outer side of the filter plate (5) through the mounting frame.

5. A denitrification deep bed filter apparatus according to claim 1, wherein: a welding frame is arranged between the biological filter bed (4) and the overhaul cylinder (10), and the outer wall of the biological filter bed (4) is fixedly connected with one end of the overhaul cylinder (10) through the welding frame.

6. A denitrification deep bed filter apparatus according to claim 1, wherein: no. two inlet tube (11), carbon source throw and be provided with the installing support between pipe (12) and intake pool (13), the outer wall fixed connection of pipe (12) is thrown through installing support and No. two inlet tube (11), carbon source in the outside of intake pool (13).