CN219585930U - Centralized integrated sewage treatment equipment - Google Patents

Abstract

The utility model provides centralized integrated sewage treatment equipment, and belongs to the technical field of sewage treatment. The centralized integrated sewage treatment equipment comprises an equipment main body, wherein the equipment main body is provided with an anaerobic tank, a first anoxic tank, a first aerobic tank, a second anoxic tank, a second aerobic tank, a sedimentation tank, a filter tank and a clean water tank which are communicated in sequence. Solves the technical problems of long time consumption and large investment in the construction of the sewage treatment station in the prior art. And the grading arrangement and reasonable combination configuration of the first anoxic tank, the first aerobic tank, the first anoxic tank and the second aerobic tank improve the sewage treatment capacity. The detachable design of the filter module ensures that the device is better suitable for different water qualities in the treatment of water quality, and the filter tank is used as a clean water tank, so that not only is the unnecessary economic investment of the filter module reduced, but also the arrangement of a backwash pump and a backwash water pipeline is reduced, and the energy is saved to the greatest extent.

Description

Centralized integrated sewage treatment equipment

Technical Field

The utility model belongs to the technical field of sewage treatment, and particularly relates to centralized integrated sewage treatment equipment.

Background

About 90 hundred million tons of domestic sewage are produced annually in rural areas, and the treatment rate is only about 22%. The rural domestic sewage discharge layout is dispersed, the points are multiple, the treatment main body is lack of enthusiasm, the treatment equipment is incomplete, the drainage pipe network is not perfect in construction, the collection treatment rate is low, various untreated sewage and wastewater are directly discharged into irrigation channels penetrating through rural areas from farmer families, so that the agricultural irrigation water is seriously polluted, the rural ecological environment is further deteriorated, even series of problems in rural medical treatment, economic construction and the like can be triggered, infectious diseases are generated and spread, and the life safety of farmers is seriously threatened.

From the long-term development of rural economy and with the combination of rural sewage treatment characteristics, a building mode of one village and one station is mostly adopted, namely, domestic sewage is concentrated to a sewage treatment station for centralized treatment by building a sewage collection pipe network, the treated sewage is discharged or recycled after reaching standards, but the building of the sewage treatment station consumes a longer period of time and has larger investment.

Disclosure of Invention

The embodiment of the utility model provides centralized integrated sewage treatment equipment, which aims to solve the technical problems of long time consumption and large investment in building a sewage treatment station in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the centralized integrated sewage treatment equipment comprises an equipment main body, wherein the equipment main body is provided with an anaerobic tank, a first anoxic tank, a first aerobic tank, a second anoxic tank, a second aerobic tank, a sedimentation tank, a filter tank and a clean water tank which are communicated in sequence.

In one possible implementation, the first and second flow guide walls are included,

the first diversion wall is arranged in the first aerobic tank, the first diversion wall is of an arc-shaped structure, a first channel for water flow circulation is formed between the arc outer side of the first diversion wall and the inner side wall of the first aerobic tank, and two ends of the first channel are respectively communicated with the water inlet and the water outlet of the first aerobic tank; the second flow guide wall is arranged in the second aerobic tank, the second flow guide wall is of an arc-shaped structure, a second channel for water flow is formed between the arc outer side of the second flow guide wall and the inner side wall of the second aerobic tank, and two ends of the second channel are respectively communicated with the water inlet and the water outlet of the second aerobic tank.

In one possible implementation, the method further comprises a first gas stripping reflux device and a second gas stripping reflux device; the water inlet of the first air stripping reflux device is communicated with the first aerobic tank, and the water outlet of the first air stripping reflux device is communicated with the first anoxic tank; the water inlet of the second air stripping reflux device is communicated with the second aerobic tank, and the water outlet of the second air stripping reflux device is communicated with the second anoxic tank.

In one possible implementation manner, the filter further comprises a backwash pump, wherein a water inlet of the backwash pump is communicated with the clean water tank, and a water outlet of the backwash pump is communicated with the filter tank.

In one possible implementation, the device further comprises a lifting assembly, a bracket and a filtering module; the lifting assembly comprises a vertically arranged lifting rail and rollers rolling along the lifting rail, and the lifting rail is fixedly connected to the side wall in the filter tank; the support is connected with the roller, and the support can enter or exit the filter tank along with the rolling of the roller; and the filter module is arranged inside the bracket.

In one possible implementation, two sets of lifting assemblies are provided on opposite sides of the support.

In one possible implementation, the sedimentation tank is further provided with a water outlet weir.

In one possible implementation, the filtration module employs a soft filter packing.

In one possible implementation, the roller is an H-roller with an annular groove, the lifting rail is angle steel and the tip penetrates into the annular groove.

In one possible implementation, the filter further comprises a backwash water pipeline, one end of the backwash water pipeline is communicated with the filter tank, and the other end of the backwash water pipeline is communicated with the regulating tank.

The centralized integrated sewage treatment equipment provided by the utility model has the beneficial effects that: compared with the prior art, the sewage treatment device has the advantages that the anaerobic tank, the first anoxic tank, the first aerobic tank, the second anoxic tank, the second aerobic tank, the sedimentation tank, the filter tank and the clean water tank which are sequentially communicated are arranged on the device main body to treat sewage, so that the technical problems of long time consumption and large investment in building the sewage treatment station in the prior art are solved.

Drawings

FIG. 1 is a schematic structural view of a centralized integrated sewage treatment apparatus according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view taken along the direction A of FIG. 1;

FIG. 3 is a cross-sectional view taken along the direction B of FIG. 1;

FIG. 4 is a cross-sectional view taken along the direction C of FIG. 1;

FIG. 5 is a D-direction cross-sectional view of FIG. 1;

FIG. 6 is a sectional view in the E direction of FIG. 1;

FIG. 7 is a schematic plan view of a filter tank and a filter module;

reference numerals illustrate:

2. an anaerobic tank; 31. a first anoxic tank; 32. a second anoxic tank; 311. a first stripping reflux means; 41. a first aerobic tank; 411. a second stripping reflux means; 42. a second aerobic tank; 5. a sedimentation tank; 6. a filter tank; 611. lifting the track; 612. a roller; 613. a bracket; 614. a filtration module; 7. a clean water tank; 53. honeycomb inclined tube filler; 54. a water outlet weir plate; 61. soft filter packing; 81. a first aeration fan; 82. a second aeration fan; 84. a backwash pump; 412. a first guide wall; 421. a second guide wall; 1a, biological filler; 1b, a rotary mixing aerator; 1c, a perforated aerator.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It should be further noted that the drawings and embodiments of the present utility model mainly describe the concept of the present utility model, and on the basis of the concept, some specific forms and arrangements of connection relationship, positional relationship, power mechanism, power supply device, hydraulic device, control device, etc. may not be completely described, but those skilled in the art may implement the specific forms and arrangements described above in a well-known manner on the premise of understanding the concept of the present utility model.

When an element is referred to as being "fixed" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the same sense as the orientation or positional relationship shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" means two or more, and the meaning of "a number" means one or more, unless specifically defined otherwise.

Referring to fig. 1, the centralized integrated sewage treatment apparatus provided by the present utility model will now be described. The centralized integrated sewage treatment equipment comprises an equipment main body, wherein the equipment main body is provided with an anaerobic tank 2, a first anoxic tank 31, a first aerobic tank 41, a second anoxic tank 32, a second aerobic tank 42, a sedimentation tank 5, a filter tank 6 and a clean water tank 7 which are communicated in sequence. The staged arrangement and reasonable combination configuration of the first anoxic tank 31, the first aerobic tank 41, the second anoxic tank 32 and the second aerobic tank 42 improves the sewage treatment capacity.

Compared with the prior art, the centralized integrated sewage treatment equipment provided by the embodiment of the utility model solves the technical problems of long time consumption and large investment in constructing a sewage treatment station in the prior art by sequentially communicating the anaerobic tank 2, the first anoxic tank 31, the first aerobic tank 41, the second anoxic tank 32, the second aerobic tank 42, the sedimentation tank 5, the filter tank 6 and the clean water tank 7 on the equipment main body.

In this embodiment, the sewage treatment capacity is improved by the staged arrangement of the first anoxic tank 31, the first aerobic tank 41, the second anoxic tank 32 and the second aerobic tank 42.

Referring to fig. 1 to 6, an embodiment of the present utility model based on the first embodiment is as follows: a first channel for water flow is formed between the arc outer side of the first guide wall 412 and the inner side wall of the first aerobic tank 41, and two ends of the first channel are respectively communicated with the water inlet and the water outlet of the first aerobic tank 41; the second guide wall 421 is arranged in the second aerobic tank 42, the second guide wall 421 is of an arc-shaped structure, a second channel for water flow is formed between the arc outer side of the second guide wall 421 and the inner side wall of the second aerobic tank 42, and two ends of the second channel are respectively communicated with the water inlet and the water outlet of the second aerobic tank 42. Through being equipped with first guide wall 412 and second guide wall 421 respectively in first good oxygen pond 41 and the good oxygen pond 42 of second for when sewage flows through in first good oxygen pond 41 and the good oxygen pond 42, first good oxygen pond 41 and the good oxygen pond 42 of second do not produce the dead angle, make sewage fully carry out the aerobic reaction in first good oxygen pond 41 and the good oxygen pond 42, reach good plug flow effect, improve sewage purification efficiency.

Referring to fig. 1 to 6, an embodiment of the present utility model based on the first embodiment is as follows: the centralized integrated wastewater treatment facility includes a first stripping reflux device 311 and a second stripping reflux device 411. The water inlet of the first air stripping reflux device 311 is communicated with the first aerobic tank 41, and the water outlet of the first air stripping reflux device 311 is communicated with the first anoxic tank 31; the first air stripping reflux device 311 returns the mixed liquor in the first aerobic tank 41 to the first anoxic tank 31 to complete the primary denitrification reaction.

The water inlet of the second air stripping reflux device 411 is communicated with the second aerobic tank 42, and the water outlet of the second air stripping reflux device 411 is communicated with the second anoxic tank 32. The second stripping reflux device 411 returns the mixed liquor in the second aerobic tank 42 to the second anoxic tank 32 to complete the secondary denitrification reaction.

By arranging the first stripping reflux device 311 and the second stripping reflux device 411, the denitrification capacity in the sewage treatment system is increased, and the power consumption of the sewage treatment system can be reduced by utilizing the stripping reflux device, so that the sewage treatment quality is improved.

Referring to fig. 1 to 6, an embodiment of the present utility model based on the first embodiment is as follows: the water inlet of the backwash pump 84 is communicated with the clean water tank 7, and the water outlet of the backwash pump 84 is communicated with the filter tank 6. Clean water in the clean water tank 7 flows into the filter tank 6 through the backwash pump 84, and precipitates in the filter tank 6 are cleaned, so that residual impurities or waste substances in the filter layer can be timely removed, tiny holes in the filter layer are prevented from being blocked, the flow rate of liquid is influenced, and the cleaning efficiency of the filter tank 6 is improved. The clean water tank 7 is used as a source of backwash water of the filter tank 6, reduces tap water use and realizes reclaimed water recycling.

Further, the sewage treatment device also comprises a backwash water pipeline, a water inlet of the backwash water pipeline is connected with the filter tank 6, a water outlet of the backwash water pipeline is connected with the regulating tank, mixed liquid after the filter tank 6 is cleaned flows into the regulating tank through the backwash water pipeline, sewage treatment is performed again, the filter tank 6 in the device is higher than the position of the regulating tank, and the mixed liquid flows into the regulating tank under the action of gravity, so that energy is saved.

Referring to fig. 7, an embodiment of the present utility model based on the first embodiment is as follows: the filter tank 6 further comprises a lifting assembly, a bracket 613 and a filter module 614, wherein the lifting assembly comprises a lifting rail 611 which is vertically arranged and a roller 612 which rolls along the lifting rail 611, and the lifting rail 611 is fixedly connected to the side wall in the filter tank 6; the bracket 613 is connected with the roller 612, and the bracket 613 can enter or exit the filter tank 6 along with the rolling of the roller 612; and a filter module 614 is provided inside the frame 613.

The support 613 drives the filtration module 614 to enter or exit the filter tank 6 along with the roller 612, when the sewage quality treated by the centralized integrated sewage treatment equipment is higher, the sewage can reach the clean water standard without filtering after precipitation, in this case, the filtration module 614 is detached from the filter tank 6, and the filter tank 6 is used as the clean water tank 7, so that not only is the unnecessary economic investment of the filtration module 614 reduced, but also the arrangement of the backwash pump 84 and backwash water pipeline is reduced, and the energy is saved to the maximum extent.

Further, two sets of lifting assemblies are provided on opposite sides of the frame 613. The symmetrical arrangement of the lifting assemblies makes the rack 613 smoother when entering or exiting the filter chamber 6.

Referring to fig. 1 to 6, an embodiment of the present utility model based on the first embodiment is as follows: the sedimentation tank 5 is also provided with a water outlet weir plate 54. By providing the water outlet weir plate 54, the levelness of the water outlet and the load on the weir can be effectively ensured.

Further, the filter module 614 employs a soft filter filler 61. The soft filter filler 61 is made of an aldehyde fiber as a basic material. The soft filter element 61 is formed by processing to simulate the natural aquatic weed. The soft filter filler 61 has the advantages of large specific surface area, high utilization rate, variable gaps, no blockage, wide application range, low manufacturing cost, low transportation cost and the like, and has been widely used in printing and dyeing, silk, wool spinning, food, pharmacy, petrochemical industry, papermaking, hemp spinning, hospitals and cyanide-containing boiling water treatment. In order to bring the characteristics and economic benefits of the product into play, the soft filter filler 61 is promoted to be new under the guidance of related scientific research units, has various forms, reasonable structure and better effect, overcomes the defects of small actual surface, easy breakage of a central rope, agglomeration in the middle of fiber bundles and the like in the prior art, and is thus popular with vast users.

The utility model further provides a specific embodiment based on the first embodiment, which is as follows: the roller 612 adopts an H-shaped roller 612 with an annular groove, the lifting rail 611 adopts angle steel, and the tip penetrates into the annular groove. The two inner side surfaces of the annular groove of the H-shaped roller 612 are respectively in corresponding contact with the two outer side surfaces of the angle steel, the H-shaped roller 612 moves along the length direction of the angle steel, and the two outer side surfaces of the angle steel are limited by the H-shaped roller 612. Thereby preventing the bracket 613 from being deviated.

The operation method of the utility model is as follows:

domestic sewage (toilet flushing water is treated by a septic tank, large-particle substances such as excrement are precipitated and then supernatant flows into a pipe network, kitchen and restaurant sewage is deoiled by an oil separation tank and then enters the pipe network) enters a pretreatment device at the front end of equipment through a sewage collecting pipe network. The pretreatment device mainly comprises a grid/regulating tank, larger suspended substances or floating substances in sewage are removed through the grid, and the regulating tank is required to be arranged for water quality and water quantity regulation due to obvious rural sewage discharge time period, so that the stable operation of the biochemical device is ensured, and the pretreated sewage is lifted by a water pump and enters the integrated sewage treatment equipment for treatment.

The sewage lifted by the pump enters the anaerobic tank 2, and the biochemical action of anaerobic bacteria in the anaerobic tank 2 is utilized to hydrolyze and acidize organic matters, so that the organic matters in the sewage are removed, the biodegradability of the sewage can be improved, and the phosphorus accumulating bacteria can realize the efficient release of phosphorus and the storage of organic matters in the area. The sewage enters the first anoxic tank 31 of the next biochemical treatment unit through a flow port, denitrifying bacteria in the area utilize organic matters in the sewage as electronic power supply to effectively remove nitrate nitrogen in the sewage, so that TN removal is realized, ammonia nitrogen and nitrate nitrogen are removed, the effluent gravity flow of the anoxic tank enters the first aerobic tank 41, the tank bottom is matched with the high-efficiency rotary mixing aerator 1b, the high-efficiency rotary mixing aerator 1b is an oxygenation aeration device adopting a multi-layer spiral cutting mode, and when the airflow enters the aerator, the airflow firstly enters a multi-layer zigzag aeration head in the lower layer after passing through the two spiral cutting devices to carry out multi-layer cutting, so that bubbles are cut into micro bubbles, the utilization rate of oxygen is greatly improved, and the device has the characteristics of uniform aeration and high oxygenation efficiency. Dissolved oxygen in the tank rises through the high-efficiency rotary mixing aerator 1b, aerobic microorganisms adhere to the filler, high-efficiency removal of organic matters is realized by utilizing the metabolism of the aerobic microorganisms in sewage, nitrifying bacteria oxidize ammonia nitrogen and nitrite nitrogen in the sewage into nitrate nitrogen, mixed liquid is returned to the anoxic section through air stripping reflux to perform denitrification removal of the nitrate nitrogen, meanwhile, phosphorus accumulating bacteria perform aerobic phosphorus absorption by utilizing organic matters stored in the aerobic section, sludge is discharged through rear-end precipitation, and phosphorus removal is realized by the phosphorus discharge device. The design of the gas stripping reflux can effectively reduce the power consumption of equipment, and the mixed liquid design adopts a gas stripping reflux device, so that the use of the equipment is reduced, and the energy consumption is reduced. The sewage treated by the first aerobic tank 41 enters the second anoxic tank 32 for treatment, the undegraded nitrate nitrogen in the sewage is further removed, and the carbon source is provided for denitrifying bacteria by adding raw water at the stage, so that the high-efficiency removal of nitrogen in the sewage with low carbon nitrogen ratio is realized under the condition of not adding the carbon source, the sewage treated by the second anoxic tank 32 enters the second aerobic tank 42, the organic matters in the sewage are further removed, the standard discharge of effluent COD (chemical oxygen demand) is ensured, the gravity flow of the sewage treated by AAOAO enters the high-efficiency sedimentation zone for mud-water separation, part of sludge flows back to the front-end anaerobic tank 2, the sludge concentration of the whole device is ensured, and part of the sludge is discharged to the sludge storage pool to ensure the removal of phosphorus index of the device.

The sewage after biochemical-precipitation effluent is filtered by a rear-end filter tank 6, so that SS in the sewage is further removed, and standard discharge of the index is ensured. The effluent of the filter tank 6 is discharged to the clean water tank 7, the clean water tank 7 has two main functions, firstly, the sewage is disinfected by adding disinfectant, the effluent bacterial index is ensured to reach the standard, and the effluent bacterial index is used as a source of backwash water of the filter tank 6, so that tap water is reduced, and reclaimed water recycling is realized (the second function can be saved when the filter tank 6 is not provided). The chemical dephosphorization module can be flexibly and externally arranged according to the water outlet requirement, and the biochemical dephosphorization is assisted, so that the standard discharge of the phosphorus index is ensured.

Wherein, the inside of the walls of the anaerobic tank 2, the first anoxic tank 31, the first aerobic tank 41, the second aerobic tank 42 and the second anoxic tank 32 are externally connected with a biological filler 1a, a perforated aerator 1c, a first aeration fan 81 and a second aeration fan 82, and the air outlets of the first aeration fan 81 and the second aeration fan 82 are connected with the perforated aerator 1c.

The first aeration fan 81 and the perforated aerator 1c in the first aerobic tank 41 and the second aerobic tank 42 fully stir sewage in the tanks, so that the sewage in the tanks forms circulation, and the oxygen content of the sewage further provides sufficient oxygen for sewage treatment of aerobic bacteria. The second aeration fan 82 and the perforated aerators 1c of the first anoxic tank 31 and the second anoxic tank 32 enable the sewage in the anoxic tank to form circulation, so that anoxic bacteria are fully fused with the sewage in time, the action efficiency of the anoxic bacteria is improved, and the needed oxygen content is provided for the anoxic bacteria.

The bottom of the anaerobic tank 2 is also provided with a perforated aerator 1c, so that the sewage in the anaerobic tank 2 forms a circulation flow, the full fusion of anaerobic bacteria and sewage can be improved, and the anaerobic reaction of the anaerobic bacteria is accelerated.

The air outlets of the first aeration fan 81 and the second aeration fan 82 are connected with the perforated aerator 1c to provide power for the perforated aerator 1c.

Because the content of dissolved oxygen in water is an important index for affecting the metabolism of microorganisms, the index has a great relation with the oxygen transmission efficiency of the aeration device, and the low oxygen transmission efficiency of the aeration device can lead to large fan selection and increase energy consumption; the membrane aerator is selected and used, so that the oxygen transfer efficiency is greatly improved, but the membrane aerator is easy to block, and the replacement and maintenance of the integrated equipment are difficult. Because the current integrated equipment mostly adopts the perforated aerator 1c to carry out aeration, the oxygen transmission efficiency of the aeration device is lower, the energy consumption is high, and the later operation and maintenance cost is high. Therefore, the external rotary mixing aerator 1b is externally connected to the bottoms of the first aerobic tank 41 and the second aerobic tank 42, the aeration oxygenation is carried out in a multi-layer spiral cutting mode, when the airflow passes through the aerator, the airflow firstly passes through the multi-layer zigzag air distribution head at the lower layer after being cut by the two-layer spiral cutting system, and the multi-layer cutting is carried out, so that the air bubbles are cut into micro-air bubbles, the utilization rate of oxygen is greatly improved, the air distribution is uniform, the blockage is not easy, and the problems of low aeration efficiency and easy blockage of the aeration device are solved.

The sedimentation tank 5 is externally connected with a honeycomb inclined tube filler 53 and a perforated aerator 1c. The arrangement of the honeycomb inclined tube filler 53 accelerates the rapid sedimentation of sewage in the sedimentation tank 5, and the arrangement of the perforated aerator 1c further improves the mixing of oxygen and sewage, improves the oxygen content in the sewage, and further accelerates the sewage treatment efficiency.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. The centralized integrated sewage treatment device is characterized by comprising a device main body, wherein the device main body is provided with an anaerobic tank (2), a first anoxic tank (31), a first aerobic tank (41), a second anoxic tank (32), a second aerobic tank (42), a sedimentation tank (5), a filter tank (6) and a clean water tank (7) which are communicated in sequence.

2. The centralized integrated wastewater treatment facility of claim 1, comprising:

the first flow guide wall (412) is arranged in the first aerobic tank (41), the first flow guide wall (412) is of an arc-shaped structure, a first channel for water flow is formed between the arc outer side of the first flow guide wall (412) and the inner side wall of the first aerobic tank (41), and two ends of the first channel are respectively communicated with the water inlet and the water outlet of the first aerobic tank (41);

the second flow guide wall (421) is arranged in the second aerobic tank (42), the second flow guide wall (421) is of an arc-shaped structure, a second channel for water flow is formed between the arc outer side of the second flow guide wall (421) and the inner side wall of the second aerobic tank (42), and two ends of the second channel are respectively communicated with the water inlet and the water outlet of the second aerobic tank (42).

3. The centralized integrated wastewater treatment facility of claim 1, further comprising:

the water inlet of the first air stripping and refluxing device (311) is communicated with the first aerobic tank (41), and the water outlet of the first air stripping and refluxing device (311) is communicated with the first anoxic tank (31);

the water inlet of the second air stripping reflux device (411) is communicated with the second aerobic tank (42), and the water outlet of the second air stripping reflux device (411) is communicated with the second anoxic tank (32).

4. The centralized integrated wastewater treatment facility of claim 1, further comprising:

and a water inlet of the backwash pump (84) is communicated with the clean water tank (7), and a water outlet of the backwash pump (84) is communicated with the filter tank (6).

5. The centralized integrated wastewater treatment facility of claim 1, further comprising:

the lifting assembly comprises a lifting track (611) and rollers (612) rolling along the lifting track, and the lifting track (611) is fixedly connected to the side wall in the filter tank (6);

the bracket (613) is connected with the roller (612), and the bracket (613) can enter or exit the filter tank (6) along with the rolling of the roller (612); and

and a filter module (614) arranged inside the bracket (613).

6. The centralized integrated wastewater treatment facility of claim 5, wherein two sets of said lifting assemblies are provided on opposite sides of said support frame (613).

7. The centralized integrated wastewater treatment plant as claimed in claim 1, characterized in that the sedimentation tank (5) is further provided with a water discharge weir plate (54).

8. The centralized integrated wastewater treatment facility of claim 5, wherein the filtration module (614) employs a soft filter packing (61).

9. The centralized integrated wastewater treatment facility of claim 5, wherein the rollers (612) are H-shaped rollers having annular grooves, wherein the lifting rails (611) are angle steel and the tips penetrate into the annular grooves.

10. The centralized integrated wastewater treatment facility of claim 1, further comprising:

one end of the backwash water pipeline is communicated with the filter tank (6), and the other end is communicated with the regulating tank (1).