Urban sewage treatment system

Abstract

The present application provides an urban sewage treatment system, including a diversion well, a plant treatment tank and a long connecting pipe. A plurality of diversion wells are connected to the plant treatment tank through the long connecting pipe. A front water storage tank is also provided. The front water storage tank is arranged near the plant treatment tank. The front water storage tank is connected to the long connecting pipe. By configuring the diversion well at the front end of the sewage treatment system, sewage and rainwater are diverted, thereby reducing the treatment pressure of the sewage treatment plant on rainy days; configuring the front water storage tank near the sewage treatment plant, introducing water during peak periods, and treating low-peak water back to the treatment plant, effectively alleviating the sewage treatment pressure during peak periods.

Description

Technical Field

[0001] The invention relates to the field of sewage treatment, in particular to an urban sewage treatment system. Background Art

[0002] Urban domestic sewage is wastewater discharged from residents' daily lives, mainly from residential buildings and public buildings. Domestic sewage is rich in a large amount of organic matter. Traditional sewage treatment is mainly based on biodegradation. Sewage flows through long pipelines, and bacteria in the sewage proliferate and consume organic pollutants. Modern sewage treatment is generally based on natural biological degradation, and sewage is transported to sewage treatment plants through sewage treatment plants for centralized treatment.

[0003] Due to the limited processing capacity of sewage treatment plants, sewage during peak periods and on rainy days increases exponentially, exceeding the treatment limit. Sewage is discharged into natural water bodies without treatment, polluting the environment. Summary of the invention

[0004] The invention provides an urban sewage treatment system, which solves the problem of limited treatment capacity of sewage treatment plants.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a city sewage treatment system, including a diversion well, a plant treatment tank and a long connecting pipe. Multiple diversion wells are connected to the plant treatment tank through the long connecting pipe. A front water storage tank is also provided. The front water storage tank is arranged near the plant treatment tank, and the front water storage tank is connected to the long connecting pipe.

[0006] In the preferred scheme, a sewage pool and a rainwater pool are provided in the diversion well, a partition wall is provided between the sewage pool and the rainwater pool, a first garbage screen is provided on the upper end of the partition wall, the sewage pool is provided with a domestic sewage inlet pipe and a domestic sewage discharge pipe, the rainwater pool is provided with a rainwater discharge pipe, and a second garbage screen is provided at the rainwater discharge pipe.

[0007] In the preferred scheme, a transition crushing pool is provided between the long connecting pipeline and the plant treatment pool, the transition crushing pool is provided with a cylindrical inner cavity, a rotating frame is provided in the cylindrical inner cavity of the transition crushing pool, the rotating frame is provided with a plurality of groups of rotating cutting blades arranged at intervals along the height direction, each rotating cutting blade is arranged horizontally, a grid frame is provided on the inner wall of the cylindrical inner cavity of the transition crushing pool, the grid frame is provided with a plurality of groups of fixed auxiliary blades arranged at intervals along the height direction, each fixed auxiliary blade is arranged horizontally, each group of fixed auxiliary blades are arranged in parallel and spaced apart, and the intervals between the fixed auxiliary blades are used for the rotating cutting blades to pass through.

[0008] In the preferred scheme, a garbage collection chamber is also provided, a hollow filter lining assembly is provided in the middle of the garbage collection chamber, a connecting branch pipe is provided on the side wall of the transition crushing tank, the connecting branch pipe is connected to the upper end of the garbage collection chamber, and the lower end of the garbage collection chamber is connected to the front water storage tank.

[0009] In the preferred embodiment, the filter lining assembly is a bag-shaped concave structure with an open upper end. The filter lining assembly includes a central filter plate and a transition filter plate. A first flexible connection portion is connected between the central filter plate and the transition filter plate. The transition filter plate is provided with a second flexible connection portion, and the second flexible connection portion is connected to the upper port of the garbage collection chamber. An upper cover that can be opened upward is provided at the upper end of the garbage collection chamber. A connecting rod is connected between the upper cover and the central filter plate. An annular groove is provided on the outer side of the garbage collection chamber, and a detachable filter mesh bag is provided in the annular groove.

[0010] In the preferred solution, a lifting frame is further provided, on which a guide sleeve is provided, in which a slidable guide rod is provided, and the lower end of the guide rod is connected to the upper cover. The lifting frame is also provided with a linear drive device, which drives the guide rod to move up and down.

[0011] In the preferred solution, a fixed pulley is also provided on the lifting frame, a fixed mounting frame is provided at the fixed end of the linear drive device, the fixed mounting frame is connected to the lifting frame, a movable pulley is provided at the front end of the movable end of the linear drive device, and a pull cable is also provided, one end of the pull cable is connected to the fixed mounting frame, and the other end of the pull cable passes around the movable pulley and the fixed pulley in sequence to be connected to the middle of the upper cover.

[0012] In a preferred solution, a reflux hole is provided at the bottom of the annular groove, and the reflux hole is communicated with the interior of the garbage collection chamber.

[0013] In a preferred solution, a hook is provided on the inner wall of the annular groove, and the filter bag is in the shape of a hollow net bag.

[0014] In a preferred solution, a rain shelter is connected to the lifting frame.

[0015] The beneficial effects of the present invention are as follows: by configuring a diversion well at the front end of the sewage treatment system, sewage and rainwater are diverted, thereby reducing the treatment pressure of the sewage treatment plant on rainy days; a front water storage tank is configured near the sewage treatment plant, which is introduced during peak hours and returned to the treatment plant during low-peak hours, effectively alleviating the sewage treatment pressure during peak hours; a strip solid waste crushing and cutting pool is provided, which can crush hard long strips and cut off flexible strip waste, thereby preventing the waste from entangled with each other, overlapping and clogging the filter screen, and damaging the rotating shaft structure of various treatment equipment along the way; the crushed waste is collected through a waste collection chamber and an outward-turnable filter liner assembly is used, thereby avoiding the staff from going deep into the closed underground to collect waste, while reducing the risk of falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a system schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the diversion well of the present invention.

[0019] Figure 3It is a partial diagram of the system of the present invention.

[0020] Figure 4 It is the layout diagram of the transition crushing tank of the present invention.

[0021] Figure 5 It is a cross-sectional view of the front water storage tank and the long connecting pipe of the present invention.

[0022] Figure 6 It is a schematic diagram of the transition crushing tank of the present invention.

[0023] Figure 7 It is an internal diagram of the transition crushing tank of the present invention.

[0024] Figure 8 It is the internal structure diagram of the garbage collection chamber of the present invention.

[0025] Fig. 9 This is a diagram of the filter liner assembly of the present invention in an everted state.

[0026] In the figure: diversion well 1; domestic sewage input pipe 101; domestic sewage discharge pipe 102; partition wall 103; first garbage screen 104; second garbage screen 105; rainwater discharge pipe 106; sewage pool 107; rainwater pool 108; front water storage tank 2; aeration pipe 201; plant treatment pool 3; long connecting pipe 4; transition crushing pool 5; rotating cutting blade 501; fixed auxiliary blade 502; grid frame 503; connecting branch pipe 504; collection pipe Road 505; garbage collection chamber 6; filter lining assembly 601; central filter plate 602; first flexible connection part 603; transition filter plate 604; second flexible connection part 605; upper cover 606; annular groove 607; filter bag 608; return hole 609; connecting rod 610; lifting frame 7; guide rod 701; guide sleeve 702; fixed pulley 703; linear drive device 8; movable pulley 801; fixed mounting frame 802; cable 9; canopy 10. DETAILED DESCRIPTION

[0027] like Figure 1-9 In the invention, a city sewage treatment system includes a diversion well 1, a plant treatment pool 3 and a long connecting pipe 4. A plurality of diversion wells 1 are connected with the plant treatment pool 3 through the long connecting pipe 4. A front water storage tank 2 is also provided. The front water storage tank 2 is arranged near the plant treatment pool 3. The front water storage tank 2 is connected with the long connecting pipe 4.

[0028] Urban domestic sewage is diverted through the diversion well 1. Normal domestic sewage and sewage at the beginning of rainfall flow into the long connecting pipe 4. The long connecting pipe 4 is relatively long. When sewage flows through the long connecting pipe 4, bacteria in nature such as nitrifying bacteria and denitrifying bacteria naturally biodegrade organic matter in the sewage, and a large amount of sewage rich in organic matter is processed and consumed. The clearer rainwater at the end of rainfall is discharged into the natural water body through another pipe of the diversion well 1, reducing unnecessary treatment processes of the sewage treatment plant.

[0029] When the amount of sewage is large, part of the sewage is pumped into the front water storage tank 2. Multiple front water storage tanks 2 can be set along the long connecting pipe 4 and located close to the plant treatment tank 3, which can effectively alleviate the peak treatment pressure of the sewage treatment plant.

[0030] The front water storage tank 2 and the plant treatment tank 3 are similar in structure. The bottom of the plant treatment tank 3 is provided with an aeration pipe 201, which discharges a large amount of oxygen-rich air, and biodegrades organic matter through bacteria. In addition, there are conventional sewage treatment operations such as sedimentation separation, spraying of chemical agents, and neutralization of acid and alkali pollutants.

[0031] After the peak of sewage treatment, the sewage treated in the front water storage tank 2 is transported again to the plant treatment tank 3 through the long connecting pipe 4 for further treatment.

[0032] In the preferred scheme, a sewage pool 107 and a rainwater pool 108 are provided in the diversion well 1, a partition wall 103 is provided between the sewage pool 107 and the rainwater pool 108, a first garbage screen 104 is provided at the upper end of the partition wall 103, the sewage pool 107 is respectively provided with a domestic sewage inlet pipe 101 and a domestic sewage discharge pipe 102, the rainwater pool 108 is provided with a rainwater discharge pipe 106, and a second garbage screen 105 is provided at the rainwater discharge pipe 106.

[0033] Normally, sewage enters the sewage pool 107 from the domestic sewage input pipe 101. Due to limited flow, sewage is directly discharged from the domestic sewage discharge pipe 102 into the long connecting pipe 4. When it rains for the first time, the sewage is still discharged from the domestic sewage discharge pipe 102 because the water is dirty. After it rains for a period of time, the sewage gradually becomes clearer and the flow increases. The water overflows from the partition wall 103 into the rainwater pool 108 and is discharged into the natural water body through the rainwater discharge pipe 106.

[0034] The height of the partition wall 103 is determined by the sewage volume during peak hours on sunny days.

[0035] The first garbage interception net 104 and the second garbage interception net 105 are used to intercept solid garbage in domestic water and rainwater. The staff enters the diversion well 1 by an escalator to clean them regularly.

[0036] In the preferred scheme, a transition crushing pool 5 is provided between the long connecting pipe 4 and the plant treatment pool 3. The transition crushing pool 5 is provided with a cylindrical inner cavity. A rotating frame is provided in the cylindrical inner cavity of the transition crushing pool 5. The rotating frame is provided with a plurality of groups of rotating cutting blades 501 arranged at intervals along the height direction. Each rotating cutting blade 501 is arranged horizontally. A grid frame 503 is provided on the inner wall of the cylindrical inner cavity of the transition crushing pool 5. The grid frame 503 is provided with a plurality of groups of fixed auxiliary blades 502 arranged at intervals along the height direction. Each fixed auxiliary blade 502 is arranged horizontally. Each group of fixed auxiliary blades 502 is arranged in parallel and spaced apart. The intervals between the fixed auxiliary blades 502 are used for the rotating cutting blades 501 to pass through.

[0037] The transition crushing pool 5 is provided with an inlet pipe and an outlet pipe along the tangent direction of the cylindrical side wall. The rotating frame is provided with a rotating shaft and a rotating motor is installed. The strip-shaped and flocculent solid waste is cut into multiple small segments by the rotating rotary cutting blade 501.

[0038] In the preferred embodiment, a garbage collection chamber 6 is further provided, a hollow filter lining assembly 601 is provided in the middle of the garbage collection chamber 6, a connecting branch pipe 504 is provided on the side wall of the transition crushing tank 5, the connecting branch pipe 504 is connected to the upper end of the garbage collection chamber 6, and the lower end of the garbage collection chamber 6 is connected to the front water storage tank 2.

[0039] After the strip-shaped and flocculent solid waste is cut into multiple small segments, it is pumped from the connecting branch pipes 504 at the intervals between adjacent groups of fixed auxiliary blades 502 to the collecting pipeline 505 and finally pumped to the upper end of the waste collection chamber 6 and falls into the filter liner assembly 601 for collection. After passing through the hollow part of the filter liner assembly 601, the sewage is collected at the bottom of the waste collection chamber 6 and pumped into the front water storage tank 2 for further treatment.

[0040] In order to reduce the lift, the garbage collection chamber 6 is generally buried below the ground, and garbage is collected from the upper opening. Since the garbage collection chamber 6 is deep, garbage collectors need to bend over or even lie on the ground, and multiple people need to cooperate to take out the internal filter liner assembly 601, which is not ergonomic and there is a risk of people falling into the garbage collection chamber 6.

[0041] Therefore, in the preferred embodiment, the filter lining assembly 601 is a bag-shaped concave structure with an opening at the upper end. The filter lining assembly 601 includes a central filter plate 602 and a transition filter plate 604. A first flexible connection portion 603 is connected between the central filter plate 602 and the transition filter plate 604. The transition filter plate 604 is provided with a second flexible connection portion 605. The second flexible connection portion 605 is connected to the upper port of the garbage collection chamber 6. An upwardly openable upper cover 606 is provided at the upper end of the garbage collection chamber 6. A connecting rod 610 is connected between the upper cover 606 and the central filter plate 602. An annular groove 607 is provided on the outer side of the garbage collection chamber 6. A detachable filter mesh bag 608 is provided in the annular groove 607.

[0042] The flexible connection part can be made of rubber or silicone material.

[0043] The central filter plate 602 and the transition filter plate 604 are provided with through filter holes.

[0044] The upper cover 606 is connected to the central filter plate 602 through a connecting rod 610. When the upper cover 606 is opened upward, the central filter plate 602 also moves upward. Since the first flexible connection part 603 and the transition filter plate 604 are both flexible annular structures, when the central filter plate 602 moves upward and exceeds the upper port of the garbage collection chamber 6, the filter lining assembly 601 gradually turns outward and changes from a concave structure to an upward convex structure. The solid waste collected inside the filter lining assembly 601 rolls along the slope and falls into the filter bag 608 in the outer annular groove 607. The filter bag 608 is easy to remove. The annular groove 607 is shallower than the garbage collection chamber 6, and there is no risk of falling.

[0045] The annular groove 607 has a large area and can disperse and collect the garbage in the filter liner assembly 601 to prevent the garbage from being too concentrated to be carried by a single person.

[0046] In the preferred embodiment, a lifting frame 7 is further provided, on which a guide sleeve 702 is provided, in which a slidable guide rod 701 is provided, and the lower end of the guide rod 701 is connected to the upper cover 606. A linear drive device 8 is also provided on the lifting frame 7, which drives the guide rod 701 to move up and down.

[0047] In the preferred solution, a fixed pulley 703 is also provided on the lifting frame 7, a fixed mounting frame 802 is provided at the fixed end of the linear drive device 8, the fixed mounting frame 802 is connected to the lifting frame 7, a movable pulley 801 is provided at the front end of the movable end of the linear drive device 8, and a cable 9 is also provided, one end of the cable 9 is connected to the fixed mounting frame 802, and the other end of the cable 9 is passed around the movable pulley 801 and the fixed pulley 703 in turn to be connected to the middle of the upper cover 606.

[0048] The linear drive device 8 is an air cylinder, an oil cylinder, an electric cylinder or an electric push rod. Although the filter liner assembly 601 is not too heavy, it needs to form a steep slope to make the garbage slide down easily. Therefore, the central filter plate 602 needs a certain height. Therefore, the linear drive device 8 is installed horizontally, and a double stroke is formed by the cooperation of the movable and fixed pulleys to reduce the volume of the overall structure.

[0049] In a preferred solution, a reflux hole 609 is provided at the bottom of the annular groove 607 , and the reflux hole 609 is communicated with the interior of the garbage collection chamber 6 .

[0050] The residual sewage carried by the garbage flows back into the bottom of the garbage collection chamber 6 through the return hole 609.

[0051] In a preferred embodiment, a hook is provided on the inner wall of the annular groove 607, and the filter bag 608 is in the shape of a hollow net bag.

[0052] In a preferred solution, a rain shelter 10 is connected to the lifting frame 7 .

[0053] On the basis of maintaining a certain ventilation effect, untreated rainwater is prevented from falling into the annular ditch 607. At the same time, garbage collection operations can be carried out on rainy days, and sunshade can be provided on sunny days, thereby reducing the labor intensity of personnel when collecting garbage.

[0054] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A municipal sewage treatment system, characterized in that: It comprises a diversion well (1), a plant treatment pool (3) and a long connecting pipe (4), wherein a plurality of diversion wells (1) are connected to the plant treatment pool (3) via the long connecting pipe (4), and a front water reservoir (2) is provided, wherein the front water reservoir (2) is arranged near the plant treatment pool (3), and the front water reservoir (2) is connected to the long connecting pipe (4); A transition crushing tank (5) is provided between the long connecting pipeline (4) and the plant area treatment tank (3); A garbage collection chamber (6) is also provided, a hollow filter lining assembly (601) is provided in the middle of the garbage collection chamber (6), a connecting branch pipe (504) is provided on the side wall of the transition crushing tank (5), the connecting branch pipe (504) is connected to the upper end of the garbage collection chamber (6), and the lower end of the garbage collection chamber (6) is connected to the front water storage tank (2); The filter liner assembly (601) is a bag-shaped concave structure with an open upper end. The filter liner assembly (601) comprises a central filter plate (602) and a transition filter plate (604). A first flexible connection portion (603) is connected between the central filter plate (602) and the transition filter plate (604). The transition filter plate (604) is provided with a second flexible connection portion (605). The second flexible connection portion (605) is connected to an upper port of a garbage collection chamber (6). An upper cover (606) that can be opened upward is provided at the upper end of the garbage collection chamber (6). A connecting rod (610) is connected between the upper cover (606) and the central filter plate (602). An annular groove (607) is provided on the outer side of the garbage collection chamber (6). A detachable filter mesh bag (608) is provided in the annular groove (607). The upper cover (606) is integrally connected to the central filter plate (602) via a connecting rod (610). The upper cover (606) is opened upward to move the central filter plate (602) upward, and the filter liner assembly (601) is turned outward to cause the solid waste collected inside the filter liner assembly (601) to roll along the slope and fall into the filter mesh bag (608) in the outer annular groove (607).

2. The urban sewage treatment system according to claim 1, characterized in that: A sewage pool (107) and a rainwater pool (108) are provided in the diversion well (1), a partition wall (103) is provided between the sewage pool (107) and the rainwater pool (108), a first garbage screen (104) is provided at the upper end of the partition wall (103), a domestic sewage input pipe (101) and a domestic sewage discharge pipe (102) are provided in the sewage pool (107), a rainwater discharge pipe (106) is provided in the rainwater discharge pipe (106), and a second garbage screen (105) is provided at the rainwater discharge pipe (106).

3. The urban sewage treatment system according to claim 1 is characterized in that: The pulverizing pool (5) is provided with a cylindrical inner cavity, a rotating frame is provided in the cylindrical inner cavity of the transition pulverizing pool (5), a plurality of groups of rotating cutting blades (501) are arranged at intervals along the height direction of the rotating frame, and each rotating cutting blade (501) is arranged horizontally; a grid frame (503) is provided on the inner wall of the cylindrical inner cavity of the transition pulverizing pool (5), a plurality of groups of fixed auxiliary blades (502) are arranged at intervals along the height direction of the grid frame (503), each fixed auxiliary blade (502) is arranged horizontally, each group of fixed auxiliary blades (502) are arranged parallel to each other, and the intervals between the fixed auxiliary blades (502) are used for the rotating cutting blades (501) to pass through.

4. The urban sewage treatment system according to claim 1 is characterized in that: A lifting frame (7) is also provided, and a guide sleeve (702) is provided on the lifting frame (7). A slidable guide rod (701) is provided in the guide sleeve (702), and the lower end of the guide rod (701) is connected to the upper cover (606). A linear drive device (8) is also provided on the lifting frame (7), and the linear drive device (8) drives the guide rod (701) to move up and down.

5. The urban sewage treatment system according to claim 4 is characterized in that: The lifting frame (7) is also provided with a fixed pulley (703), the fixed end of the linear drive device (8) is provided with a fixed mounting frame (802), the fixed mounting frame (802) is connected to the lifting frame (7), the front end of the movable end of the linear drive device (8) is provided with a movable pulley (801), and a pull cable (9) is also provided, one end of the pull cable (9) is connected to the fixed mounting frame (802), and the other end of the pull cable (9) is passed around the movable pulley (801) and the fixed pulley (703) in sequence to be connected to the middle of the upper cover (606).

6. The urban sewage treatment system according to claim 1, characterized in that: A reflux hole (609) is provided at the bottom of the annular groove (607), and the reflux hole (609) is communicated with the interior of the garbage collection chamber (6).

7. The urban sewage treatment system according to claim 1, characterized in that: A hook is provided on the inner wall of the annular groove (607), and the filter bag (608) is in the shape of a hollow net bag.

8. The urban sewage treatment system according to claim 4, characterized in that: A rain shelter (10) is connected to the lifting frame (7).

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