Glass fiber reinforced plastic sewage treatment tank with backwashing function

Abstract

The utility model discloses a glass fiber reinforced plastic sewage treatment tank with a backwashing function, which relates to the technical field of sewage treatment, and comprises a protective enclosure mechanism, a sewage filtering mechanism, a sewage treatment tank mechanism and a biological filter mechanism, the protective enclosure mechanism comprises a cement coating, a buried wall body and a concrete pouring block, a concrete pouring block is arranged at the top of the buried wall body, and cement coatings are arranged on the outer sides of the buried wall body and the concrete pouring block; according to the glass fiber reinforced plastic sewage treatment tank with the backwashing function, impurities in sewage are filtered in advance by adopting the sewage filtering mechanism, large-particle impurities in the sewage are prevented from entering the sedimentation tank, and the sludge suction mechanism is arranged, so that settled sludge in the sedimentation tank is convenient to clean; a filter screen back-flushing mechanism is arranged to perform back-flushing cleaning on a filter screen plate in the sewage filtering mechanism, so that frequent cleaning of the filter screen plate is avoided, precipitation and anaerobic treatment are adopted to treat the sewage, and then the treated water is filtered through a biological filter assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a glass fiber reinforced plastic sewage treatment pool with a backwashing function. Background Art

[0002] At present, as people pay more attention to environmental protection, sewage treatment is becoming more and more important. The important steps of sewage treatment are filtration, sedimentation and anaerobic treatment.

[0003] In the prior art, a glass fiber reinforced plastic sewage treatment tank is used, which includes a horizontal glass fiber reinforced plastic tank body and a vertical glass fiber reinforced plastic tank body: the horizontal glass fiber reinforced plastic tank body is placed horizontally, and a partition plate 1 and a partition plate 2 are respectively arranged in the horizontal glass fiber reinforced plastic tank body from left to right, and the partition plate 1 and the partition plate 2 separate the horizontal glass fiber reinforced plastic tank body into a sedimentation tank, an anaerobic tank and a clear water tank distributed from left to right, and the anaerobic tank is provided with a combined filler, and a water inlet pipe connected to the sedimentation tank is penetrated at the left end of the horizontal glass fiber reinforced plastic tank body;

[0004] The surroundings of the FRP sewage treatment tank are open, and people or some large animals may easily enter the FRP sewage treatment tank by mistake, which may damage the components of the FRP sewage treatment tank. There are many debris in the sewage, and directly sending it into the sedimentation tank will cause excessive sedimentation, requiring frequent cleaning of the sedimentation sludge. In the prior art, the sludge in the sedimentation tank is not convenient to clean. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a fiberglass reinforced plastic sewage treatment pool with a backwashing function. A sewage filtering mechanism is used to filter the debris in the sewage in advance to prevent large particles of debris in the sewage from entering the sedimentation tank and increasing the precipitated sludge in the sedimentation tank. A sludge suction mechanism is provided to facilitate the cleaning of the precipitated sludge in the sedimentation tank. A filter screen backwashing mechanism is provided to backwash the filter screen plate in the sewage filtering mechanism to avoid the need for frequent cleaning of the filter screen plate. Sedimentation and anaerobic treatment are used to treat the sewage, and the treated water is then filtered through a biological filter tank component, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fiberglass reinforced plastic sewage treatment pool with backwashing function, comprising:

[0007] The protective enclosure mechanism comprises a cement coating, an underground wall and a concrete casting block. The underground wall is a rectangular structure and is buried in the soil layer. A concrete casting block is arranged on the top of the underground wall. The outer sides of the underground wall and the concrete casting block are provided with a cement coating.

[0008] The sewage filtering mechanism comprises a filter tank body, a water inlet pipe, a transfer pipe 1, a debris removal port, a tank cover and a sewage filtering assembly, wherein the filter tank body is located on the left side of the buried wall, the left end of the filter tank body is connected to the water inlet pipe, the right end of the filter tank body is connected to the left end of the transfer pipe 1, the top of the filter tank body is provided with a debris removal port, the debris removal port is equipped with a tank cover, and the filter tank body is provided with a sewage filtering assembly;

[0009] The sewage treatment tank mechanism is installed in the buried wall and is located on the right side of the filter tank body;

[0010] The biological filter mechanism is installed at the right end of the buried wall.

[0011] The filter tank body is buried in the soil layer, and the top of the filter tank body is flush with the ground. The buried wall and the concrete blocks form a low wall to enclose the filter tank body, the sewage treatment tank mechanism and the biological filter tank mechanism in the soil layer. The cement coating keeps the outer sides of the buried wall and the concrete blocks smooth while maintaining the durability of the buried wall and the concrete blocks. The filter tank body is used to filter large particles of debris in the sewage. The sewage filter assembly is located on the right side of the middle of the filter tank body. The sewage filter assembly divides the left side of the filter tank body into a larger space. External sewage enters the filter tank body through the water inlet pipe, and then enters the transfer pipe 1 after being filtered by the sewage filter assembly, and then enters the sewage treatment tank mechanism. After being treated by the sewage treatment tank mechanism, it enters the biological filter tank mechanism for biological filtration. When there are a lot of debris filtered on the left side of the filter tank body, the impurity removal port is opened through the pool cover, and the debris left by the filtration on the left side of the filter tank body can be cleaned through the impurity removal port.

[0012] Furthermore, the protective enclosure mechanism also includes a fixing plate, a guardrail mounting seat, reinforcement steel bars and a guardrail. A fixing plate is provided on the top of the concrete casting block, a vertical reinforcement steel bar is fixedly connected to the bottom of the fixing plate, and the reinforcement steel bar extends into the interior of the concrete casting block. A guardrail mounting seat is provided on the top of the fixing plate, and a guardrail is installed on the guardrail mounting seat. The fixing plate can be more firmly installed on the concrete casting block with the help of the reinforcement steel bar, and the guardrail is installed with the help of the guardrail mounting seat. The guardrail can block irrelevant personnel and large animals from entering the guardrail and affecting the internal facilities.

[0013] Furthermore, the sewage filter assembly includes a mounting vertical beam, a disassembly holder and a filter screen plate. Two mounting vertical beams are fixedly connected to the front and rear sides of the filter tank body, and disassembly holders are fixedly connected to the opposite sides of the two mounting vertical beams. The front and rear ends of the filter screen plate are respectively connected to the two disassembly holders. The two mounting vertical beams are used to mount and disassemble the holders, and the disassembly holders can realize the detachable installation of the filter screen plate. When the filter holes on the filter screen plate are clogged, it can be disassembled for cleaning, wherein the top of the filter screen plate corresponds to the impurity removal port, and the width of the filter screen plate is smaller than the diameter of the impurity removal port, ensuring that the filter screen plate can be directly pulled upward after the impurity removal port is opened.

[0014] Furthermore, the sewage treatment tank mechanism includes a horizontal FRP tank body, a left partition, a right partition, a transfer pipe 2, a transfer pipe 3 and an anaerobic sponge bed. The horizontal FRP tank body is divided into a sedimentation tank, an anaerobic tank and an anoxic tank from left to right by a left partition and a right partition. The right end of the transfer pipe 1 is connected to the top of the sedimentation tank. The top of the left partition is interspersed with a transfer pipe 2, the bottom of the right partition is interspersed with a transfer pipe 3, and an anaerobic sponge bed is arranged at the bottom of the anaerobic tank. The horizontal FRP tank body is buried in the soil layer below the ground. The sewage filtered by the sewage filter assembly first enters the sedimentation tank through the transfer pipe 1 for precipitation, then enters the anaerobic tank through the transfer pipe 2 for anaerobic treatment, and then enters the anoxic tank through the transfer pipe 3 for anoxic treatment. The anaerobic sponge bed is conducive to the attachment of a large number of anaerobic bacteria and promotes the anaerobic reaction in the anaerobic tank.

[0015] Furthermore, the sewage treatment tank mechanism also includes an inspection operation port, a tank cover and a reagent filling pipe. The top of the horizontal FRP tank body is provided with inspection operation ports corresponding to the positions of the sedimentation tank and the anaerobic tank. The sides of each inspection operation port are connected to the bottom end of the reagent filling pipe, and a tank cover is installed in each inspection operation port. The inspection operation port is convenient for checking the conditions in the sedimentation tank and the anaerobic tank. Through the reagent filling pipe, the required sewage treatment reagent can be added to the sedimentation tank and the anaerobic tank without opening the tank cover.

[0016] Furthermore, the invention also includes a filter screen recoil mechanism, which includes a return pipe, a recoil water pump, a recoil water pipe, a pipe clamp, a recoil vertical pipe and a recoil water spray head. The right ends of the two mounting vertical beams are respectively fixedly connected with two vertical recoil vertical pipes through pipe clamps. The recoil vertical pipe is provided with recoil water spray heads at equal distances on one side close to the filter screen. The anoxic pool is connected to one end of the return pipe, the other end of the return pipe is connected to the inlet of the recoil water pump, the outlet of the recoil water pump is connected to one end of the recoil water pipe, and the other end of the recoil water pipe is connected to the ends of the two recoil vertical pipes. The recoil water pump extracts the water treated with anoxic in the anoxic pool through the return pipe, and then sends it into the recoil vertical pipe through the recoil water pipe. The recoil water spray head on the side of the recoil vertical pipe sprays the water to the filter screen, so that the debris blocked in the filter holes of the filter screen can be recoiled and cleaned, so as to avoid the filter holes on the filter screen being quickly blocked, and reduce the frequency of opening the pool cover to clean the filter screen.

[0017] Furthermore, it also includes a sludge suction mechanism, which includes a sludge suction pipeline, a sludge pump and a sludge discharge pipeline. The bottom of the sedimentation tank is connected to one end of the sludge suction pipeline, the other end of the sludge suction pipeline is connected to the inlet of the sludge pump, and the outlet of the sludge pump is connected to the sludge discharge pipeline. The sludge pump can extract the sludge formed by the sedimentation tank bottom through the sludge suction pipeline, and then send it to the sludge treatment equipment through the sludge discharge pipeline for treatment, without the need to manually clean the sludge in the sedimentation tank.

[0018] Compared with the prior art, the beneficial effects of the utility model are: the fiberglass reinforced plastic sewage treatment pool with backwashing function has the following advantages:

[0019] 1. Use sewage filtering mechanism to filter the debris in sewage first, so as to prevent large particles of debris in sewage from entering the sedimentation tank and increasing the sedimentation sludge in the sedimentation tank. A sludge suction mechanism is provided to facilitate the cleaning of the sedimentation sludge in the sedimentation tank, and a filter backwash mechanism is provided to backwash the filter screen in the sewage filtering mechanism to avoid the need to frequently clean the filter screen;

[0020] 2. Use sedimentation and anaerobic treatment to treat sewage, and then filter the treated water through a biological filter assembly, which has a good effect on sewage treatment.

[0021] 3. Reduce the occupied surface area. Terrestrial plants can be planted on the surrounding surface. Artificial wetlands and aquatic plants are well integrated with the surrounding ecological environment, reducing the impact on the surrounding ecological environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the top view structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the protective enclosure mechanism of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the sewage filtering mechanism of the utility model;

[0026] Figure 5 This is a schematic diagram of the top view of the sewage filtering mechanism of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the sewage treatment pool of the utility model;

[0028] Figure 7 This is a schematic diagram of the partial structure of the biological filter mechanism of the utility model;

[0029] Figure 8 This is a schematic diagram of the soil layer foundation and foundation pile structure of the utility model;

[0030] In the figure: 1 soil foundation, 2 protective enclosure mechanism, 21 cement coating, 22 buried wall, 23 concrete casting block, 24 fixing plate, 25 guardrail mounting seat, 26 reinforcement steel bar, 27 guardrail, 3 sewage filtration mechanism, 31 filter tank body, 32 water inlet pipe, 33 transfer pipe 1, 34 impurity removal port, 35 tank cover, 36 reinforcement plate, 37 installation vertical beam, 38 disassembly seat, 39 filter screen plate, 310 disassembly handle, 4 sewage treatment tank mechanism, 41 horizontal fiberglass tank body, 42 left partition, 43 right partition, 44 transfer pipe 2, 45 transfer pipe 3, 46 anaerobic sponge bed, 47 inspection operation port, 48 tank cover, 49 agent adding injection pipe, 5 filter screen backwash mechanism, 51 return pipe, 52 backwash water pump, 53 backwash water pipe, 54 pipe clamp, 55 backwash vertical pipe, 56 backwash sprinkler, 6 biological filter mechanism, 61 circular biological filter one, 62 transfer water collection pipe, 63 dispersion pipe, 64 transfer pipe four, 65 transfer pipe five, 66 circular biological filter two, 67 melon stone layer, 68 circular expanded clay layer two, 69 zeolite layer, 610 circular expanded clay layer one, 611 gravel layer, 7 clean water temporary storage mechanism, 71 clean water temporary storage tank, 72 cover, 73 water pipe, 8 aquatic plants, 9 terrestrial plants, 10 foundation piles, 11 mud extraction pipe, 12 sludge pump, 13 mud discharge pipe. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] For example, see Figures 1 to 8 , the utility model provides a technical solution: a glass fiber reinforced plastic sewage treatment pool with backwashing function, including a protective enclosure mechanism 2, a sewage filtering mechanism 3, a sewage treatment pool mechanism 4 and a biological filter mechanism 6;

[0033] The protective enclosure mechanism 2 includes a cement coating 21, an underground wall 22 and a concrete casting block 23. The underground wall 22 is a rectangular structure and is buried in the soil layer. The top of the underground wall 22 is provided with a concrete casting block 23. The outer sides of the underground wall 22 and the concrete casting block 23 are provided with a cement coating 21.

[0034] The protective enclosure mechanism 2 further includes a fixing plate 24, a guardrail mounting seat 25, a reinforcing steel bar 26 and a guardrail 27. The top of the concrete casting block 23 is provided with a fixing plate 24, the bottom of the fixing plate 24 is fixedly connected with a vertical reinforcing steel bar 26, and the reinforcing steel bar 26 extends into the interior of the concrete casting block 23. The top of the fixing plate 24 is provided with a guardrail mounting seat 25, and a guardrail 27 is installed on the guardrail mounting seat 25. The fixing plate 24 can be more firmly installed on the concrete casting block 23 with the help of the reinforcing steel bar 26, and the guardrail 27 is installed with the help of the guardrail mounting seat 25. The guardrail 27 can block irrelevant personnel and large animals from entering the guardrail 27 and affecting the internal facilities.

[0035] The sewage filtering mechanism 3 includes a filter tank body 31, a water inlet pipe 32, a transfer pipe 33, a debris removal port 34, a pool cover 35 and a sewage filtering component. The filter tank body 31 is located on the left side of the buried wall 22. The left end of the filter tank body 31 is connected to the water inlet pipe 32, and the right end of the filter tank body 31 is connected to the left end of the transfer pipe 33. The top of the filter tank body 31 is provided with a debris removal port 34, and the pool cover 35 is installed in the debris removal port 34. The filter tank body 31 is provided with a sewage filtering component;

[0036] Since the diameters of the impurity removal port 34 and the pool cover 35 are relatively large in order to facilitate the cleaning of the sewage filter assembly, the structural strength of the pool cover 35 will be reduced. Therefore, the sewage filter mechanism 3 also includes a reinforcing rib plate 36. The bottom of the pool cover 35 is integrally formed with criss-crossing reinforcing rib plates 36. The reinforcing rib plates 36 are used to improve the structural strength of the pool cover 35 to prevent damage caused by being stepped on.

[0037] The sewage filter assembly includes a mounting vertical beam 37, a disassembly holder 38 and a filter screen plate 39. Two mounting vertical beams 37 are fixedly connected to the front and rear sides of the filter tank body 31, and disassembly holders 38 are fixedly connected to the opposite sides of the two mounting vertical beams 37. The front and rear ends of the filter screen plate 39 are respectively engaged with the two disassembly holders 38. The two mounting vertical beams 37 are used to install and disassemble the holders 38, respectively. The disassembly holders 38 can realize the detachable installation of the filter screen plate 39. When the filter holes on the filter screen plate 39 are clogged, they can be disassembled for cleaning. The top of the filter screen plate 39 corresponds to the impurity removal port 34, and the width of the filter screen plate 39 is smaller than the diameter of the impurity removal port 34, ensuring that the filter screen plate 39 can be directly pulled upward after the impurity removal port 34 is opened.

[0038] The sewage filter assembly also includes a disassembly handle 310. A disassembly handle 310 is provided on the top of the filter screen plate 39. The disassembly handle 310 facilitates the filter screen plate 39 to be pulled upwards during disassembly.

[0039] The sewage treatment tank mechanism 4 is installed in the buried wall 22 and is located on the right side of the filter tank body 31;

[0040] The sewage treatment tank mechanism 4 includes a horizontal fiberglass tank body 41, a left partition 42, a right partition 43, a transfer pipe 2 44, a transfer pipe 3 45 and an anaerobic bacteria sponge bed 46. The horizontal fiberglass tank body 41 is separated from the left to the right by the left partition 42 and the right partition 43 to form a sedimentation tank, an anaerobic tank and an anoxic tank. The right end of the transfer pipe 1 33 is connected to the top of the sedimentation tank, the top of the left partition 42 is interspersed with a transfer pipe 2 44, the bottom of the right partition 43 is interspersed with a transfer pipe 3 45, and an anaerobic bacteria sponge bed 46 is provided at the bottom of the anaerobic tank. The horizontal FRP tank body 41 is buried in the soil layer below the ground. The sewage filtered by the sewage filter assembly first enters the sedimentation tank through the transfer pipe 1 33 for sedimentation, then enters the anaerobic tank through the transfer pipe 2 44 for anaerobic treatment, and then enters the anoxic tank through the transfer pipe 3 45 for anoxic treatment. The anaerobic sponge bed 46 is conducive to the attachment of a large number of anaerobic bacteria, promoting the anaerobic reaction in the anaerobic tank.

[0041] The sewage treatment tank mechanism 4 also includes an inspection operation port 47, a tank cover 48 and a reagent filling pipe 49. The top of the horizontal FRP tank body 41 is provided with inspection operation ports 47 corresponding to the positions of the sedimentation tank and the anaerobic tank. The sides of each inspection operation port 47 are connected to the bottom end of the reagent filling pipe 49, and a tank cover 48 is installed in each inspection operation port 47. The inspection operation port 47 is convenient for checking the conditions in the sedimentation tank and the anaerobic tank. Through the reagent filling pipe 49, the required sewage treatment reagent can be added to the sedimentation tank and the anaerobic tank without opening the tank cover 48.

[0042] The biofilter mechanism 6 is installed at the right end of the buried wall 22 .

[0043] The biofilter mechanism 6 includes a circular biofilter 1 61, a transfer water collection pipe 62, a dispersion pipe 63, a transfer pipe 4 64, a transfer pipe 5 65, a circular biofilter 2 66, a melon stone layer 67, a circular ceramsite layer 2 68, a zeolite layer 69, a circular ceramsite layer 1 610, and a gravel layer 611. The circular biofilter 1 61 and the circular biofilter 2 66 are both made of glass fiber reinforced plastic. The top of the anoxic tank is connected to the left end of the transfer water collection pipe 62. The circular biofilter 1 61 is located on the right side of the anoxic tank. The circular biofilter 2 66 is located on the right side of the circular biofilter 1 61. The right end of the transfer water collection pipe 62 is located in the circular biofilter 1 61. The front and rear sides of the right end of the transfer water collection pipe 62 are respectively connected to the dispersion pipe 63 through pipe joints. The anoxic treated sewage passes through the transfer water collection pipe 62 and the dispersion pipe 63. The pipes 63 are dispersed and enter the circular biofilter 1 61. The bottom of the circular biofilter 1 61 is connected to the bottom of the circular biofilter 2 66 through the transfer pipe 4 64, and the right side of the top of the circular biofilter 2 66 is connected to the left end of the transfer pipe 5 65. The circular biofilter 1 61 and the circular biofilter 2 66 are successively paved with gravel layers 611, circular ceramsite layers 1 610, zeolite layers 69, ceramsite layers 2 68 and melon stone layers 67 from bottom to top. The various layers for sewage filtration are combined with each other to effectively absorb and filter out pollutants in the water, and aquatic plants 8 are planted in the melon stone layer 67 in the circular biofilter 2 66. The circular biofilter 1 61 and the circular biofilter 2 66 are both buried in the soil layer, and the tops of the circular biofilter 1 61 and the circular biofilter 2 66 are both flush with the ground.

[0044] Terrestrial plants 9 are planted on the ground inside the buried wall 22, which reduces the surface area occupied. Terrestrial plants can be planted on the surrounding surface, and there are artificial wetlands and aquatic plants, which are well integrated with the surrounding ecological environment and reduce the impact on the surrounding ecological environment.

[0045] It also includes a temporary clean water storage mechanism 7, which includes a temporary clean water storage tank 71, a cover 72, and a water pipe 73. The right end of the transfer pipe 5 65 is connected to the temporary clean water storage tank 71. The top of the temporary clean water storage tank 71 is installed with a cover 72, and the right side of the temporary clean water storage tank 71 is connected to the water pipe 73. With the help of the temporary clean water storage tank 71, the treated clean water can be temporarily stored, and then the clean water inside can be used through the water pipe 73.

[0046] It also includes a soil foundation 1 and foundation wood piles 10. The soil foundation 1 is set at the position below the buried wall 22, the filter pool body 31, the horizontal fiberglass tank body 41, the circular biofilter 1 61, the circular biofilter 2 66 and the temporary storage pool for clean water 71 in the soil layer. The lower side of the soil foundation 1 is inserted with foundation wood piles 10 in a rectangular array. With the help of the soil foundation 1 and the foundation wood piles 10, the settlement of the soil layer below the buried wall 22, the filter pool body 31, the horizontal fiberglass tank body 41, the circular biofilter 1 61, the circular biofilter 2 66 and the temporary storage pool for clean water 71 can be avoided to affect the use. The foundation wood piles 10 need to be free of rot and deterioration, free of knots, and need to be soaked in asphalt for anti-corrosion treatment. The length and diameter can be selected according to needs.

[0047] The filter tank body 31 is buried in the soil layer, and the top of the filter tank body 31 is flush with the ground. The buried wall 22 and the concrete casting block 23 form a low wall to enclose the filter tank body 31, the sewage treatment tank mechanism 4 and the biological filter tank mechanism 6 in the soil layer. The cement coating 21 keeps the outer side of the buried wall 22 and the concrete casting block 23 smooth, while maintaining the durability of the buried wall 22 and the concrete casting block 23. The filter tank body 31 is used to filter large particles of debris in the sewage. The sewage filter component is located in the middle right of the filter tank body 31. The sewage filter component will filter the filter tank body 31 The left side is divided into a larger space, and external sewage enters the filter tank body 31 through the water inlet pipe 32, then enters the transfer pipe 33 after being filtered by the sewage filter component, and then enters the sewage treatment tank mechanism 4. After being treated by the sewage treatment tank mechanism 4, it enters the biological filter tank mechanism 6 for biological filtration. When there are a lot of debris filtered on the left side of the filter tank body 31, the impurity removal port 34 is opened through the pool cover 35. The impurities left by the filtration on the left side of the filter tank body 31 can be cleaned through the impurity removal port 34. After filtering the sewage, sending it to the sedimentation tank can reduce the amount of sludge generated in the sedimentation tank.

[0048] For example 2, please refer to Figures 1 to 8 The utility model provides a technical solution: a glass fiber reinforced plastic sewage treatment pool with backwashing function. The structure of this embodiment is roughly the same as that of the first embodiment, except that:

[0049] The filter screen recoil mechanism 5 is also included, and the filter screen recoil mechanism 5 includes a return pipe 51, a recoil water pump 52, a recoil water pipe 53, a pipe clamp 54, a recoil vertical pipe 55 and a recoil water spray head 56. The right ends of the two mounting vertical beams 37 are fixedly connected to two vertical recoil vertical pipes 55 through pipe clamps 54 respectively, and recoil water spray heads 56 are equidistantly arranged on one side of the recoil vertical pipe 55 close to the filter screen plate 39. The anoxic tank is connected to one end of the return pipe 51, and the other end of the return pipe 51 is connected to the inlet of the recoil water pump 52. The outlet of the recoil water pump 52 is connected to one end of the recoil water pipe 53, and the other end of the recoil water pipe 53 is connected to the ends of the two recoil vertical pipes 55. The backwash water pump 52 pumps the anoxic treated water out of the anoxic pool through the return pipe 51, and then sends it into the backwash standpipe 55 through the backwash water pipe 53, and sprays it to the filter screen 39 through the backwash water spray head 56 on the side of the backwash standpipe 55, so as to backwash and clean the debris blocked in the filter holes of the filter screen 39, thereby preventing the filter holes on the filter screen 39 from being quickly blocked, and reducing the frequency of opening the pool cover 35 to clean the filter screen 39.

[0050] For example 3, please refer to Figures 1 to 8 The utility model provides a technical solution: a glass fiber reinforced plastic sewage treatment pool with backwashing function. The structure of this embodiment is roughly the same as that of the second embodiment, except that:

[0051] It also includes a sludge suction mechanism, which includes a sludge suction pipeline 11, a sludge pump 12 and a sludge discharge pipeline 13. The bottom of the sedimentation tank is connected to one end of the sludge suction pipeline 11, the other end of the sludge suction pipeline 11 is connected to the inlet of the sludge pump 12, and the outlet of the sludge pump 12 is connected to the sludge discharge pipeline 13. The sludge pump 12 can extract the sludge precipitated at the bottom of the sedimentation tank through the sludge suction pipeline 11, and then send it to the sludge treatment equipment through the sludge discharge pipeline 13 for treatment, without the need to manually clean the sludge in the sedimentation tank.

[0052] The sludge pump 12 and the backwash water pump 52 in the above embodiments are both controlled by an external PLC controller, and the control method adopts the existing technology.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fiberglass reinforced plastic wastewater treatment tank with backwashing function, characterized in that: include: The protective enclosure mechanism (2) comprises a cement coating (21), an underground wall (22) and a concrete casting block (23); the underground wall (22) is a rectangular structure; the top of the underground wall (22) is provided with a concrete casting block (23); and the outer sides of the underground wall (22) and the concrete casting block (23) are provided with a cement coating (21); The sewage filtering mechanism (3) comprises a filtering tank body (31), a water inlet pipe (32), a transfer pipe (33), a debris removal port (34), a tank cover (35) and a sewage filtering assembly, wherein the filtering tank body (31) is located on the left side inside the buried wall (22), the left end of the filtering tank body (31) is connected to the water inlet pipe (32), the right end of the filtering tank body (31) is connected to the left end of the transfer pipe (33), the top of the filtering tank body (31) is provided with a debris removal port (34), the tank cover (35) is installed in the debris removal port (34), and the sewage filtering assembly is provided inside the filtering tank body (31); A sewage treatment tank mechanism (4) is installed in the buried wall (22) and is located on the right side of the filter tank body (31); The biofilter mechanism (6) is installed at the right end inside the buried wall (22).

2. A fiberglass reinforced plastic wastewater treatment pool with backwashing function according to claim 1, characterized in that: The protective enclosure mechanism (2) further comprises a fixing plate (24), a guardrail mounting seat (25), a reinforcing steel bar (26) and a guardrail (27); the fixing plate (24) is provided on the top of the concrete casting block (23); the bottom of the fixing plate (24) is fixedly connected with a vertical reinforcing steel bar (26); the reinforcing steel bar (26) extends into the interior of the concrete casting block (23); the top of the fixing plate (24) is provided with a guardrail mounting seat (25); and the guardrail (27) is mounted on the guardrail mounting seat (25).

3. A fiberglass reinforced plastic wastewater treatment pool with backwashing function according to claim 1, characterized in that: The sewage filter assembly comprises a mounting vertical beam (37), a disassembly clamp (38) and a filter screen plate (39); the front and rear sides of the filter tank body (31) are respectively fixedly connected to two mounting vertical beams (37); opposite sides of the two mounting vertical beams (37) are respectively fixedly connected to disassembly clamps (38); and the front and rear ends of the filter screen plate (39) are respectively clamped to the two disassembly clamps (38).

4. A fiberglass reinforced plastic wastewater treatment pool with backwashing function according to claim 3, characterized in that: The sewage treatment tank mechanism (4) comprises a transverse glass fiber reinforced plastic tank body (41), a left partition (42), a right partition (43), a transfer pipe 2 (44), a transfer pipe 3 (45) and an anaerobic bacteria sponge bed (46). The transverse glass fiber reinforced plastic tank body (41) is divided into a sedimentation tank, an anaerobic tank and an anoxic tank which are arranged from left to right in sequence by a left partition (42) and a right partition (43). The right end of the transfer pipe 1 (33) is connected to the top of the sedimentation tank. The transfer pipe 2 (44) is inserted through the top of the left partition (42), the transfer pipe 3 (45) is inserted through the bottom of the right partition (43), and an anaerobic bacteria sponge bed (46) is arranged at the bottom of the anaerobic tank.

5. A fiberglass reinforced plastic wastewater treatment pool with backwashing function according to claim 4, characterized in that: The sewage treatment tank mechanism (4) further comprises an inspection operation port (47), a tank cover (48) and a reagent filling pipe (49); the top of the transverse glass fiber reinforced plastic tank body (41) is provided with an inspection operation port (47) at positions corresponding to the sedimentation tank and the anaerobic tank, respectively; the side of each inspection operation port (47) is connected to the bottom end of the reagent filling pipe (49), and a tank cover (48) is installed in each inspection operation port (47).

6. A fiberglass reinforced plastic wastewater treatment pool with backwashing function according to claim 4, characterized in that: The filter screen recoil mechanism (5) further comprises a filter screen recoil mechanism (5), the filter screen recoil mechanism (5) comprising a return pipe (51), a recoil water pump (52), a recoil water pipe (53), a pipe clamp (54), a recoil vertical pipe (55) and a recoil water spray head (56); the right ends of the two mounting vertical beams (37) are respectively fixedly connected to two vertical recoil vertical pipes (55) through pipe clamps (54); the recoil vertical pipe (55) is provided with recoil water spray heads (56) at equal distances on one side of the recoil vertical pipe (55) close to the filter screen plate (39); the anoxic pool is connected to one end of the return pipe (51); the other end of the return pipe (51) is connected to the inlet of the recoil water pump (52); the outlet of the recoil water pump (52) is connected to one end of the recoil water pipe (53); and the other end of the recoil water pipe (53) is connected to the ends of the two recoil vertical pipes (55).

7. The fiberglass reinforced plastic wastewater treatment pool with backwashing function according to claim 4 is characterized by: It also comprises a mud suction mechanism, the mud suction mechanism comprising a mud suction pipeline (11), a sludge pump (12) and a mud discharge pipeline (13), the bottom of the sedimentation tank is connected to one end of the mud suction pipeline (11), the other end of the mud suction pipeline (11) is connected to the inlet of the sludge pump (12), and the outlet of the sludge pump (12) is connected to the mud discharge pipeline (13).

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