CN214244117U

CN214244117U - Urban sewage treatment equipment

Info

Publication number: CN214244117U
Application number: CN202023083285.XU
Authority: CN
Inventors: 李静宇; 郭洪君; 朱伟; 杨露
Original assignee: Liaoning Shanshui Qing Environmental Protection Technology Co ltd
Current assignee: Liaoning Shanshui Qing Environmental Protection Technology Co ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-09-21
Anticipated expiration: 2030-12-18

Abstract

The utility model discloses a town sewage treatment device, including the casing, be equipped with anaerobic zone, aerobic zone and sedimentation filtration district in the casing in proper order, be equipped with the filter cloth filtering pond in the sedimentation filtration district, still be equipped with the biofilm carrier filtration district between sedimentation filtration district and the aerobic zone, the biofilm carrier filtration district has by the runner that aerobic zone flows to sedimentation filtration district, is equipped with the zeolite filler in the runner. The town sewage treatment equipment is provided with a biological filler filtering area, the biological filler filtering area is provided with a flow passage which flows from the aerobic area to the precipitation filtering area, and the sewage flowing into the precipitation filtering area needs to flow through the flow passage. Meanwhile, zeolite filler is arranged in the flow channel, and the zeolite is an ammonia nitrogen adsorbent. It is generally believed that zeolite will saturate after adsorbing a certain amount of ammonia nitrogen and thus zeolite will not be used as a filler. However, in the actual zeolite filler region, because the nitrogen concentration is high, a large amount of nitrifying bacteria and denitrifying bacteria are also collected in the region, a synchronous nitrification and denitrification environment is naturally formed, and the function of nitrogen removal can be effectively achieved for a long time.

Description

Urban sewage treatment equipment

Technical Field

The utility model relates to the technical field of water treatment, in particular to town sewage treatment equipment.

Background

With the rapid development of economy in China, water resources are in short supply, the water pollution situation is becoming more severe, many places face the problem of water resource shortage, and sewage treatment and recycling are becoming more and more popular. At present, urban sewage is usually treated in a centralized mode, but in most areas, particularly in remote areas with low population density, the traditional centralized sewage treatment has the problems of difficult sewage collection, large pipe network investment, large occupied area, high operation management level requirement and the like.

The prior art often adopts MBR (Membrane Bio-Reactor) to treat sewage. The conventional MBR has the advantages of high efficiency and low consumption, but the MBR has the problem of insufficient denitrification capacity, and the treatment capacity of the MBR on nitrogen elements is obviously reduced particularly under low-temperature conditions.

Therefore, how to improve the denitrification capability of the sewage treatment equipment is a technical problem which needs to be solved urgently by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a town sewage treatment device, it has the biofilm carrier filtering area, is equipped with the zeolite filler in the biofilm carrier filtering area, and the zeolite filler can desorption nitrogen in the waste water effectively to denitrogenation ability has been improved.

In order to realize the purpose, the utility model provides a town sewage treatment device, which comprises a housin, be equipped with anaerobic zone, aerobic zone and sediment filtering area in the casing in proper order, be equipped with the cloth filter in the sediment filtering area, sediment filtering area with still be equipped with the biofilm carrier filtering area between the aerobic zone, the biofilm carrier filtering area has by the runner that aerobic zone flows to sediment filtering area, be equipped with the zeolite filler in the runner.

Preferably, one side of the biological filler filtering area, which is close to the aerobic area, is provided with an upper baffle fixed on the top and the side wall of the shell, one side of the biological filler filtering area, which is close to the sedimentation filtering area, is provided with a lower baffle fixed on the bottom and the side wall of the shell, and the flow channel is formed between the upper baffle and the lower baffle.

Preferably, the zeolite filler is positioned at the lower part of the flow channel, and the upper part of the flow channel is also provided with a filtering filler.

Preferably, the filter packing is an inclined plate packing.

Preferably, the system also comprises a submerged fan, wherein an aerator pipe is arranged at the bottom of the aerobic zone, and an outlet of the submerged fan is connected with the aerator pipe.

Preferably, the aeration pipe extends from the bottom of the aerobic zone to the bottom of the biological filler filtration zone.

Preferably, the submerged fan is disposed in the anaerobic zone.

Preferably, the sedimentation and filtration zone is further provided with a gas lifting device for driving the nitrified liquid to flow back, a gas inlet of the gas lifting device is connected with an outlet of the submerged fan, and a nitrified liquid outlet of the gas lifting device is connected with the anaerobic zone through a return pipeline.

Preferably, the cloth filter is connected with an output pipeline for outputting purified water, the output pipeline is connected with a back flushing pipe, and a back flushing pump is arranged in the back flushing pipe.

The utility model provides a town sewage treatment device, including the casing, be equipped with anaerobic zone, aerobic zone and sediment filtering area in the casing in proper order, be equipped with the filter cloth filtering pond in the sediment filtering area, still be equipped with the biofilm carrier filtering area between sediment filtering area and the aerobic zone, the biofilm carrier filtering area has by the runner that aerobic zone flows to the sediment filtering area, is equipped with the zeolite filler in the runner.

The town sewage treatment equipment is provided with a biological filler filtering area, the biological filler filtering area is provided with a flow passage which flows from the aerobic area to the precipitation filtering area, and the sewage flowing into the precipitation filtering area needs to flow through the flow passage. Meanwhile, zeolite filler is arranged in the flow channel, and the zeolite is an ammonia nitrogen adsorbent. It is generally believed that zeolite will saturate after adsorbing a certain amount of ammonia nitrogen and thus zeolite will not be used as a filler. However, in the actual zeolite filler region, because the nitrogen concentration is high, a large amount of nitrifying bacteria and denitrifying bacteria are also collected in the region, a synchronous nitrification and denitrification environment is naturally formed, and the function of nitrogen removal can be effectively achieved for a long time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural view of the town sewage treatment equipment provided by the utility model.

Wherein the reference numerals in fig. 1 are:

the device comprises a shell 1, an anaerobic zone 2, an aerobic zone 3, a biological filler filtering zone 4, a cloth filter 5, a submerged fan 6, an aeration pipe 7, a suspended filler 8, a zeolite filler 9, an inclined plate filler 10, a backwashing pump 11, a backwashing pipe 12, a gas lifting device 13, a water inlet pipe 14 and a partition plate 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a town sewage treatment device provided by the present invention.

The utility model provides a town sewage treatment equipment includes casing 1. As shown in fig. 1, the housing 1 is a horizontal tank structure, sewage enters from the water inlet pipe 14 at one end, and an anaerobic zone 2, an aerobic zone 3, a biological filler filtering zone 4 and a precipitation filtering zone are sequentially arranged in the housing 1 along the axial direction and in the direction far away from the water inlet pipe 14. Wherein the anaerobic zone 2 is an anoxic environment with a large amount of denitrifying bacteria therein, which are capable of performing nitrogen removal from the sewage. The anaerobic zone 2 and the aerobic zone 3 are separated by a partition plate 15, the partition plate 15 is provided with a through hole penetrating along the thickness direction, and sewage flows into the aerobic zone 3 through the through hole. The town sewage treatment equipment also comprises a fan, an aeration pipe 7 is arranged in the aerobic zone 3, and the outlet of the fan is connected with the aeration pipe 7 and used for conveying air to the aeration pipe 7. After the air enters the aerobic zone 3, part of oxygen in the air is dissolved in the aerobic zone 3, so that the aerobic zone 3 forms an oxygen-enriched environment. Therefore, a large amount of nitrifying bacteria exist in the aerobic zone 3, and the suspended filler 8 for the nitrifying bacteria to attach is arranged in the aerobic zone 3. The nitrifying bacteria perform aerobic respiration in an oxygen-enriched environment to adsorb and degrade organic pollutants in the sewage, so that the purification of water quality is realized. Then the sewage enters a biological filler filtering area 4, the biological filler filtering area 4 is provided with a zeolite filler 9, and the zeolite filler 9 can be synchronously nitrified and denitrified to further denitrify the sewage. In addition, in order to fix the zeolite filler 9 and ensure that the sewage can flow through the region of the zeolite filler 9, the biological filler filtering area 4 is also provided with a flow passage, the zeolite filler 9 is arranged in the flow passage, and the sewage flows into the precipitation filtering area through the flow passage. The sedimentation and filtration area is provided with a cloth filter 5, sewage is sedimentated and filtered in the sedimentation and filtration area, turbid matters in the water are sedimentated to the bottom of the sedimentation and filtration area, and purified water passes through the cloth filter 5 and is discharged along a drain pipe connected with the cloth filter 5.

Optionally, the zeolite filler 9 can be modified zeolite, which has the characteristic of ion exchange with ammonia ions, has the characteristic of special ammonia nitrogen adsorption, is convenient for forming an ammonia ion accumulation area, and is particularly suitable for forming an enrichment area of nitrobacteria. The zeolite filler 9 effectively improves the nitration characteristic of the biological filler filtering area 4, and the zeolite filler 9 has excellent adsorption characteristic.

Optionally, an upper baffle perpendicular to the axis of the shell 1 is arranged on one side of the biological filler filtering area 4 close to the aerobic area 3, and a lower baffle perpendicular to the axis of the shell 1 is arranged on one side close to the sedimentation filtering area. The top baffle is connected on casing 1 top and lateral wall, and lower baffle sealing connection is on casing 1 bottom and lateral wall. As shown in figure 1, a flow passage is formed between the upper baffle and the lower baffle, and sewage flows through the upper part of the lower baffle in an overflow mode and enters a precipitation filtering area. The zeolite filler 9 is connected with the side surfaces of the upper baffle and the lower baffle, and the zeolite filler 9 can completely cover the cross section of the flow channel to ensure that sewage can flow through the zeolite filler 9.

Optionally, the zeolite filler 9 is located at the lower part of the flow channel, and the upper part of the flow channel is also provided with a filter filler. Solid particles will still be present in the sewage flowing through the zeolite filler 9 and the filter filler is able to filter out the solid particles. Specifically, the filter packing can be inclined plate packing 10. The PP inclined plate is obliquely arranged in the flow channel, the installation angle is 45-60 degrees, the surface of the inclined plate is smooth, and sludge cannot be accumulated. Of course, the user may also use other forms of filter packing or tilted plate packing made of other materials according to the requirement, and is not limited herein. By setting a reasonable ascending flow velocity, the inclined plate packing 10 can realize the interception of activated sludge, and a large amount of mixed liquid rich in nitrobacteria and denitrifying bacteria is intercepted in the area and does not enter a subsequent filter cloth filter 5 area for separation, thereby ensuring the high sludge concentration of a biological treatment system, further improving the effluent quality, and reducing the backwashing frequency and the maintenance difficulty of the subsequent filter cloth filter 5. The optional range of the sewage rising flow rate is 0.5-1.0mm/s, and certainly, a user can set the sewage rising flow rate according to the requirement, and the range is not limited herein.

In the embodiment, the town sewage treatment equipment is provided with a biological filler filtering area 4, and the biological filler filtering area 4 is internally provided with a zeolite filler 9. The zeolite filler 9 can effectively adsorb ammonia ions, and can effectively improve the nitrification characteristic of the urban sewage treatment equipment by forming a nitrifying bacteria enrichment area.

Optionally, the fan is a submerged fan 6, and the submerged fan 6 is disposed in the anaerobic zone 2. All heat emitted by the submerged fan 6 during working is absorbed by the sewage in the anaerobic zone 2. In a specific embodiment of the application, the submerged fan 6 can increase the sewage temperature by 2-3 degrees, so as to ensure the activity of denitrifying bacteria and improve the sewage treatment efficiency.

Optionally, the aeration pipe 7 extends from the bottom of the aerobic zone 3 to the bottom of the biological filler filtering zone 4. The aeration pipe 7 can stir the sewage of the biological filler filtering area 4 to prevent sludge from depositing and can oxygenate the water to facilitate the nitrification and denitrification of the area. In addition, the biological filler filtering area 4 can also be provided with filler with pores below the zeolite filler 9. By utilizing the biological characteristics, a large amount of biological films can be formed on the surface of the filler, and the area is in a low oxygen state, so that a favorable synchronous nitrification and denitrification environment is formed, and the sewage treatment efficiency is improved.

Optionally, the cloth filter 5 filters the sewage, the filtered clean water flows out through a drain pipe, and solid particles such as sludge in the sewage are left at the bottom of the precipitation filtering area. The sludge contains a large amount of microorganisms capable of nitrification and denitrification, and the microorganisms form nitrified liquid at the bottom of the sedimentation and filtration zone. The sedimentation and filtration zone is also provided with a gas lifting device 13, as shown in fig. 1, the lower part of the gas lifting device 13 is positioned at the lower part of the sedimentation and filtration zone, and the upper part is higher than the upper end of the lower baffle. The air inlet of the gas lifting device 13 is connected with the outlet of the submerged fan 6, and the nitrified liquid outlet of the gas lifting device 13 is connected with the anaerobic zone 2 through a return pipeline. Air enters the gas lifting device 13 and drives the nitrified liquid to flow upwards, so that the nitrified liquid can flow back to the anaerobic zone 2 along the return pipeline. In a specific embodiment of the present application, the reflux ratio of the nitrifying liquid is 200-250%, and of course, the user may set the reflux ratio by himself or herself as required, which is not limited herein.

Optionally, the cloth-filtering filter 5 is cleaned in a backwashing manner. Specifically, the cloth filter 5 is connected with an output pipeline, and the treated purified water is sent out through the output pipeline. The output pipeline is connected with a back flushing pipe 12, a back flushing pump 11 is arranged in the back flushing pipe 12, and the back flushing pump 11 can convey water from a clean water outlet to the cloth filter 5. The inner side pressure of the filter cloth filter 5 is higher than the outer side pressure, and then pollutants blocking the filter cloth are flushed away through the pressure difference. The backwashing mechanism can automatically clean the cloth filter 5, manual cleaning is reduced, and further the burden of operators is reduced.

In this embodiment, town sewage treatment device sets up submerged fan 6 in anaerobic zone 2, and the heat that submerged fan 6 operation produced can be absorbed to the sewage in anaerobic zone 2, improves sewage temperature and microbial activity, and then improves sewage treatment efficiency. In addition, the town sewage treatment equipment is also provided with a gas lifting device 13 which conveys the sludge to the anaerobic zone 2 in a gas stripping way. The sludge contains a large amount of microorganisms, and the sludge backflow can increase the content of the microorganisms in the anaerobic zone 2, so that the sewage treatment efficiency is further improved.

It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The town sewage treatment equipment provided by the utility model is introduced in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The town sewage treatment equipment is characterized by comprising a shell (1), wherein an anaerobic zone (2), an aerobic zone (3) and a precipitation filtering zone are sequentially arranged in the shell (1), a cloth filter (5) is arranged in the precipitation filtering zone, a biological filler filtering zone (4) is further arranged between the precipitation filtering zone and the aerobic zone (3), the biological filler filtering zone (4) is provided with a flow channel flowing from the aerobic zone (3) to the precipitation filtering zone, and zeolite filler (9) is arranged in the flow channel.

2. The town sewage treatment equipment according to claim 1, wherein the side of the biological filler filtering area (4) near the aerobic area (3) is provided with an upper baffle fixed on the top and the side wall of the casing (1), and the side near the sedimentation filtering area is provided with a lower baffle fixed on the bottom and the side wall of the casing (1), and the upper baffle and the lower baffle form the flow passage therebetween.

3. The town sewage treatment equipment according to claim 2, wherein said zeolite packing (9) is located in the lower portion of said flow channel, and the upper portion of said flow channel is further provided with a filter packing.

4. The town sewage treatment plant according to claim 3, wherein said filter packing is an inclined plate packing (10).

5. The town sewage treatment equipment according to claim 1, further comprising a submerged fan (6), wherein an aeration pipe (7) is arranged at the bottom of the aerobic zone (3), and an outlet of the submerged fan (6) is connected with the aeration pipe (7).

6. The town sewage treatment plant according to claim 5, wherein the aeration pipe (7) extends from the bottom of the aerobic zone (3) to the bottom of the biological filler filtering zone (4).

7. Urban sewage treatment plant according to claim 5, characterized in that the submerged fans (6) are arranged in the anaerobic zone (2).

8. The town sewage treatment equipment according to claim 5, wherein the precipitation filtering zone is further provided with a gas lifting device (13) for driving the nitrified liquid to flow back, the gas inlet of the gas lifting device (13) is connected with the outlet of the submerged fan (6), and the nitrified liquid outlet of the gas lifting device (13) is connected with the anaerobic zone (2) through a return pipeline.

9. The town sewage treatment equipment according to any one of claims 1 to 8, wherein the cloth filter (5) is connected with an output pipeline for outputting purified water, the output pipeline is connected with a back-flushing pipe (12), and a back-flushing pump (11) is arranged in the back-flushing pipe (12).