Continuous flow and sequencing batch aerobic granular sludge water treatment system for adding filler

Abstract

The utility model relates to a filler-added continuous flow and sequencing batch aerobic granular sludge water treatment system, which sequentially comprises a first hydrolysis acidification tank, an anaerobic tank, a sludge flocculation tank, an aerobic granular sludge reaction tank, a sludge selection tank and a secondary sedimentation tank along the water flow direction of wastewater to be treated when the continuous flow aerobic granular sludge water treatment system is adopted, when the sequencing batch type aerobic granular sludge water treatment system is adopted, a second hydrolysis acidification tank, an effluent regulating tank and a sequencing batch type aerobic granular sludge reaction tank are sequentially arranged in the water flow direction of wastewater to be treated. According to the utility model, the hemispherical microbial carrier filler is added to form a crystal nucleus, so that self-agglomeration of microorganisms inside and outside is accelerated to form a granular biopolymer; the technical effects of high pollutant removal rate, high sludge quantity, long sludge age, high sludge settling speed, efficient sludge selective separation and the like are better realized in continuous flow and sequencing batch water treatment systems respectively, and the method has the advantages of improving the impact load resistance, toxic and harmful resistance, low temperature resistance and the like of the system.

Description

Technical Field

[0001] The utility model belongs to the technical field of water treatment, and in particular relates to a continuous flow and sequencing batch aerobic granular sludge water treatment system with fillers added. Background Art

[0002] Aerobic granular sludge technology is currently considered to be a very promising biological treatment technology for sewage treatment. The formation mechanism of aerobic granular sludge is relatively complex, and there are four main hypotheses: the "crystal nucleus hypothesis" takes the crystal nucleus as the core, and microorganisms with different functions attach to it and continue to increase in size; the "extracellular polymer hypothesis" points out that EPS can increase the hydrophobicity of the sludge surface and reduce the electronegativity of the sewage surface, promoting sludge granulation;

[0003] The "self-aggregation hypothesis" points out that under suitable conditions, sludge will self-aggregate into a three-dimensional structure and continue to aggregate, grow and compress, with a tight structure and regular appearance; the "selection pressure hypothesis" controls the sedimentation time, etc., to screen out sludge with poor sedimentation performance and maintain the concentration of aerobic granular sludge. In addition to the above hypotheses, there are also the "filamentous bacteria hypothesis" and the "signal molecule (induction) hypothesis".

[0004] Regardless of the formation mechanism, from the perspective of process technology design, the existing aerobic granular sludge technology, whether continuous flow or sequencing batch, is based on one or several "hypotheses" to create the basic conditions for aerobic granular sludge reaction, including but not limited to seed sludge type, substrate composition, organic load, pH value, reactor type, aspect ratio, water flow direction, aeration intensity, operating temperature, sedimentation time, etc. However, there are very few technologies that can fully interpret the above "hypotheses" in terms of mechanism. Therefore, in the implementation process, the application of the technology will be affected by certain practical problems. Utility Model Content

[0005] In view of the defects existing in the prior art, the purpose of the utility model is to provide a continuous flow and sequencing batch aerobic granular sludge water treatment system with added fillers, which utilizes hemispherical biological carrier fillers to form crystal nuclei, fully creating conditions for the rapid and stable attachment and fixation of microorganisms, and constructs different "crystal nucleus" aerobic granular sludge water treatment systems according to the environmental conditions of different projects; at the same time, it solves the problem that general aerobic granular sludge technology is easy to disintegrate after being impacted.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is: a continuous flow aerobic granular sludge water treatment system with filler addition, the system includes a first hydrolysis acidification tank, an anaerobic tank, a sludge flocculation tank, an aerobic granular sludge reaction tank, a sludge selection tank, and a secondary sedimentation tank in sequence along the water flow direction from the inlet to the outlet of the wastewater to be treated, wherein:

[0007] The first hydrolysis acidification tank adopts an upflow reactor, the lower part of the first hydrolysis acidification tank is designed with a first water distribution system, the upper part is designed with a first hydrolysis acidification tank outlet weir, and the inlet of the first water distribution system is connected to the outlet of the first hydrolysis acidification tank water inlet pipe;

[0008] The anaerobic tank is provided with a high-speed mixer, and an anaerobic tank filter is provided at the water outlet of the anaerobic tank; the sludge flocculation tank is provided with a guide tube, a low-speed mixer and a carbon source dosing ring, and one end of the sludge flocculation tank inlet pipe is connected to the water outlet of the anaerobic tank, and the other end is connected to the guide tube inlet;

[0009] The lower part of the aerobic granular sludge reaction tank is provided with a uniformly distributed microporous aeration system, and aerobic granular sludge is uniformly dispersed in the aerobic granular sludge reaction tank, and the aerobic granular sludge uses a hemispherical microbial carrier filler as the carrier core; the outlet of the aerobic granular sludge reaction tank outlet pipe is distributed in the middle of the sludge selection tank, and sludge selection controllers and heavy sludge return systems of different heights are arranged in the middle and lower parts of the sludge selection tank; the upper part of the sludge selection tank is provided with a sludge selection tank outlet; the heavy sludge return system is connected to the sludge flocculation tank inlet pipe through the heavy sludge return main pipe;

[0010] The secondary sedimentation tank is provided with a secondary sedimentation tank inlet pipe, a secondary sedimentation tank outlet weir, and a secondary sedimentation tank sludge return main pipe. The secondary sedimentation tank inlet pipe is connected to the sludge selection tank outlet, and a selection tank filter is arranged at the front end of the secondary sedimentation tank inlet pipe; the secondary sedimentation tank outlet weir is connected to the secondary sedimentation tank outlet pipe; the secondary sedimentation tank sludge return main pipe is connected to the anaerobic tank and the first hydrolysis acidification tank inlet pipe through the anaerobic tank mud inlet pipe and the first hydrolysis acidification tank mud inlet pipe, respectively.

[0011] Furthermore, the system further comprises a first water inlet pump, the water inlet pipe of the first water inlet pump is connected to the wastewater pool to be treated, and the water outlet pipe of the first water inlet pump is connected to the inlet of the water inlet pipe of the first hydrolysis acidification tank;

[0012] The mud inlet pipe of the first hydrolysis acidification tank is connected to the middle part of the water inlet pipe of the first hydrolysis acidification tank.

[0013] Furthermore, the first hydrolysis acidification tank is filled with soft or semi-soft fillers.

[0014] Furthermore, the water inlet and the water outlet of the anaerobic tank are arranged alternately in the vertical direction, and the water outlet of the anaerobic tank is arranged on a side away from the water inlet of the anaerobic tank;

[0015] The high-speed mixer is a submersible mixer;

[0016] The heavy sludge return main pipe is connected to the middle part of the sludge flocculation tank water inlet pipe.

[0017] Further, the microporous aeration system is connected to a blower via an aerobic granular sludge air inlet pipe;

[0018] The effluent from the aerobic granular sludge reaction tank is discharged into the middle of the sludge selection tank through the reaction tank effluent weir and the aerobic granular sludge reaction tank effluent pipe;

[0019] The aerobic granular sludge reaction tank is a plug flow type or a complete mixing type;

[0020] The aerobic granular sludge reaction tank is a single tank or multiple tanks.

[0021] Furthermore, the hemispherical microbial carrier filler is an organic biological filler, and the hemispherical microbial carrier filler contains denitrifying bacteria that can meet the needs of pollutant metabolism; the denitrifying bacteria on the hemispherical microbial carrier filler are firmly fixed inside the hemispherical microbial carrier filler;

[0022] The dosage of the hemispherical microbial carrier filler is designed and determined according to different wastewater types, sludge concentrations, and the shape and size of the aerobic granular sludge reaction tank.

[0023] Furthermore, the heavy sludge return system includes a first heavy sludge return pipe and a second heavy sludge return pipe arranged at different heights in the sludge selection tank, which are respectively connected to the first heavy sludge return air lift pipe and the second heavy sludge return air lift pipe controlled by independent electric valves;

[0024] The first heavy sludge return air lift pipe and the second heavy sludge return air lift pipe are respectively connected to the air lift main pipe, and the air lift main pipe is connected to the air compressor; the outlet ends of the first heavy sludge return pipe and the second heavy sludge return pipe are both connected to the heavy sludge return main pipe;

[0025] The secondary sedimentation tank sludge return main pipe and the anaerobic tank mud inlet pipe are connected to the air lift main pipe through return sludge air lift ducts controlled by independent electric valves.

[0026] Furthermore, the secondary sedimentation tank adopts a vertical flow sedimentation tank.

[0027] The utility model also provides a sequencing batch aerobic granular sludge water treatment system with filler addition, wherein the system comprises a second hydrolysis acidification tank, an effluent regulating tank, and a sequencing batch aerobic granular sludge reaction tank in sequence along the water flow direction from the inlet to the outlet of the wastewater to be treated, wherein:

[0028] The second hydrolysis acidification tank and the effluent regulating tank include a second hydrolysis acidification tank and an effluent regulating tank. The second hydrolysis acidification tank adopts an upflow reaction tank. The lower part of the second hydrolysis acidification tank is designed with a second water distribution system, and the upper part is designed with a second hydrolysis acidification tank effluent weir; the lower part of the second hydrolysis acidification tank is connected to the second light sludge return pipe; a lifting pump is arranged in the effluent regulating tank, and the lifting pump is combined with the lifting pump inlet pipe and the lifting pump outlet pipe to lift the effluent of the second hydrolysis acidification tank into the sequencing batch aerobic granular sludge reaction tank according to the needs of the sequencing batch process;

[0029] The water flow state in the sequencing batch aerobic granular sludge reaction tank is upflow type, and a sequencing batch aerobic granular sludge reaction tank water inlet pipe and a third water distribution system are arranged at the bottom of the sequencing batch aerobic granular sludge reaction tank, and the inlet of the sequencing batch aerobic granular sludge reaction tank water inlet pipe is connected to the lifting pump outlet pipe, and the outlet is connected to the third water distribution system; the lower part of the sequencing batch aerobic granular sludge reaction tank is provided with a uniformly distributed aerobic granular sludge reaction tank aeration system; the upper part of the sequencing batch aerobic granular sludge reaction tank is uniformly provided with outlet weir troughs and outlet troughs; the sequencing batch aerobic granular sludge reaction tank is provided with a sludge selection system, and the sequencing batch aerobic granular sludge reaction tank is connected to the second light sludge return pipe through a sludge return pipe and a control valve;

[0030] Aerobic granular sludge is evenly dispersed in the sequencing batch aerobic granular sludge reaction tank, and the aerobic granular sludge uses a hemispherical microbial carrier filler as a carrier core.

[0031] Furthermore, the second water distribution system is connected to the second water inlet pump through the second hydrolysis acidification tank inlet pipe, and the second water inlet pump inlet pipe is connected to the wastewater tank to be treated;

[0032] According to different project conditions, it is determined whether to fill the second hydrolysis acidification tank with soft or semi-soft fillers.

[0033] Furthermore, the sequencing batch aerobic granular sludge reaction tank adopts a single independent tank or multiple tanks in parallel;

[0034] The aerobic granular sludge reaction tank aeration branch pipes connected to each aeration head in the aerobic granular sludge reaction tank aeration system are connected to a large air volume blower and a small air volume blower through an aerobic granular sludge reaction tank aeration main pipe; the stirring and intermittent aeration of the sequencing batch aerobic granular sludge reaction tank are achieved by switching the large air volume blower and the small air volume blower.

[0035] Furthermore, the sludge selection system is used to construct selection pressure control conditions to promote the stabilization of the shape, particle size and structure of the aerobic granular sludge and to separate it from the light sludge.

[0036] Furthermore, the hemispherical microbial carrier filler is an organic biological filler, and the hemispherical microbial carrier filler contains denitrifying bacteria that can meet the needs of pollutant metabolism; the denitrifying bacteria on the hemispherical microbial carrier filler are firmly fixed inside the hemispherical microbial carrier filler.

[0037] The beneficial effect of the utility model is that the continuous flow and sequencing batch aerobic granular sludge water treatment system with filler added provided by the utility model is adopted. When the continuous flow aerobic granular sludge water treatment system is adopted, the first hydrolysis acidification tank, the anaerobic tank, the sludge flocculation tank, the aerobic granular sludge reaction tank, the sludge selection tank, and the second sedimentation tank are included in sequence along the water flow direction of the wastewater to be treated; when the sequencing batch aerobic granular sludge water treatment system is adopted, the second hydrolysis acidification tank and the effluent regulating tank and the sequencing batch aerobic granular sludge reaction tank are included in sequence along the water flow direction of the wastewater to be treated. The utility model forms a "crystal nucleus" by adding a hemispherical microbial carrier filler to accelerate the self-agglomeration of internal and external microorganisms to form granular biopolymers, and better realizes the technical effects of high pollutant removal rate, high sludge volume, long sludge age, high sludge settling speed, and efficient sludge selection separation in the continuous flow and sequencing batch water treatment technology processes, respectively, and has the advantages of improving the system's ability to withstand shock loads, toxic and harmful substances, and low temperature. The system provided by the utility model gives full play to the technical advantages of aerobic granular sludge process, such as wide application range, stable operation, small footprint, small sludge discharge, simple operation, low cost and good effluent quality.

[0038] The beneficial effects of the continuous flow and sequencing batch aerobic granular sludge preparation system with filler addition provided by the utility model also include:

[0039] (1) The "crystal nucleus" formed by the hemispherical biological carrier filler is used as the core to promote the formation and stability of aerobic granular sludge. The filler's own structure and material properties are conducive to the enrichment of different types of microorganisms on its surface. Under good reaction conditions, the shape, size and structure of the aerobic granular sludge are continuously maintained stable, thereby ensuring efficient carbon reduction, nitrogen removal and phosphorus removal functions. At the same time, it also solves the technical problem that general aerobic granular sludge technology is easy to disintegrate after impact;

[0040] (2) According to the reaction condition requirements of the carrier filler "crystal core" aerobic granular sludge, continuous flow and sequencing batch aerobic granular sludge reaction technology systems were designed respectively. By flexibly adjusting the control parameters of each functional unit in the system to meet the project conditions such as inlet and outlet water, land occupation, etc. of different engineering projects, the advantages of aerobic granular sludge technology can be maximized to better match different application scenarios, especially the high-concentration and high-difficulty wastewater treatment of industrial parks and enterprises;

[0041] (3) In terms of functional unit design, based on the stability of the "crystal core" aerobic granular sludge, for units with high energy consumption such as sludge return and aeration, the actual reaction requirements of aerobic granular sludge are accurately matched by adopting air lift return, intermittent aeration, and combined operation of large and small blowers, thus avoiding energy waste. The energy-saving and consumption-reducing effect of the technical system is very obvious;

[0042] (4) For general aerobic granular sludge technology, it can not only quickly realize the granulation of sludge, but also complete the cultivation of mature aerobic granular sludge in a short period of time (generally within 30 days). At the same time, based on the stability of the "crystal core" structure, the process system's ability to withstand shock loads is greatly improved, and the overall operation is stable and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram of the plan layout of a continuous flow aerobic granular sludge water treatment system with filler addition provided in an embodiment of the utility model;

[0044] Figure 2 A cross-sectional schematic diagram of a continuous flow aerobic granular sludge water treatment system with filler addition provided by an embodiment of the utility model;

[0045] Figure 3 Another cross-sectional schematic diagram of a continuous flow aerobic granular sludge water treatment system with filler addition provided by an embodiment of the utility model;

[0046] Figure 4 A schematic diagram of the plan layout of a sequencing batch aerobic granular sludge water treatment system with filler addition provided in an embodiment of the utility model;

[0047] Figure 5 A cross-sectional schematic diagram of a sequencing batch aerobic granular sludge water treatment system with filler addition provided in an embodiment of the utility model;

[0048] Figure 6 A schematic diagram of a hemispherical microbial carrier filler used in an aerobic granular sludge water treatment system with filler addition provided in an embodiment of the utility model;

[0049] Figure 7 This is a schematic diagram of the COD and removal rate of the inlet and outlet water in the embodiment of the utility model;

[0050] Figure 8 This is a schematic diagram of the ammonia nitrogen removal rate in the inlet and outlet water in the embodiment of the utility model;

[0051] Fig. 9 This is a schematic diagram of the inlet and outlet water TN and removal rate in the embodiment of the utility model;

[0052] Fig.10This is a schematic diagram of the inlet and outlet water TP and removal rate in the embodiment of the utility model;

[0053] Among them, 101-first hydrolysis acidification tank; 102-anaerobic tank; 103-sludge flocculation tank; 104-aerobic granular sludge reaction tank; 105-sludge selection tank; 106-second sedimentation tank; 107-first water inlet pump; 108-first water distribution system; 109-high-speed mixer; 110-anaerobic tank filter; 111-low-speed mixer; 112-guide tube; 113-high-efficiency microporous aeration system; 114-selection tank filter; 115-second sedimentation tank outlet weir; 116-blower; 117-air compressor; 118-first water inlet pump water inlet pipe; 119-first water inlet pump outlet pipe; 120-first hydrolysis acidification tank inlet pipe; 121-sludge flocculation tank inlet pipe; 122-aerobic granular sludge tank outlet pipe; 123-second sedimentation tank inlet pipe; 124-second sedimentation tank outlet pipe; 125-second sedimentation tank sludge return main pipe; 126-anaerobic tank mud inlet pipe; 127-first hydrolysis acidification tank mud inlet pipe; 128-aerobic granular sludge air inlet pipe; 129-first heavy sludge return pipe; 130-second heavy sludge return pipe; 131-heavy sludge return main pipe; 132-air lift main pipe; 133-first Heavy sludge return air lift pipe; 134-second heavy sludge return air lift pipe; 135-return sludge air lift pipe; 136-residual sludge pipe; 201-second hydrolysis acidification tank and effluent regulating tank; 202-sequencing batch aerobic granular sludge reaction tank; 203-second water distribution system; 204-lifting pump; 205-large air volume blower; 206-small air volume blower; 207-second air compressor; 208-outlet weir; 209-outlet trough; 210-third water distribution system; 211-aeration system of aerobic granular sludge reaction tank; 212-sludge selection system; 213-water inlet pipe of the second hydrolysis acidification tank; 214-water inlet pipe of the lifting pump; 215-water outlet pipe of the lifting pump; 216-water inlet pipe of the sequencing batch aerobic granular sludge reaction tank; 217-aeration main pipe of the aerobic granular sludge reaction tank; 218-aeration branch pipe of the aerobic granular sludge reaction tank; 219-air lift return main pipe; 220-air lift return branch pipe; 221-effluent branch pipe; 222-effluent main pipe; 223-sludge return pipe of the reaction tank; 224-the first light sludge return pipe; 225-the second light sludge return pipe; 300-microbial carrier filler. DETAILED DESCRIPTION

[0054] The technical solutions in the implementation modes of the utility model will be further clearly and completely described below in conjunction with the accompanying drawings and embodiments. Obviously, the described implementation modes are only part of the implementation modes of the utility model, rather than all the implementation modes. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0055] The present embodiment provides an aerobic granular sludge water treatment system and method with added fillers. By adding hemispherical microbial carrier fillers, "crystal nuclei" are formed, which is beneficial to the attachment and fixation of microorganisms with different functions, and a typical layered structure of aerobic granular sludge is constructed: an aerobic outer layer, an anoxic middle layer, and an anaerobic inner layer, and the hydrophobicity of the surface of the aerobic granular sludge is increased. Through the detailed design of the continuous and sequencing batch process and each functional unit, it can be ensured that the aerobic granular sludge formed in the aerobic granular sludge reactor is of appropriate size and has high sludge settling performance. In the early stage of the project, it can promote the rapid start-up of the aerobic granular sludge formation process, greatly saving the start-up time. During the operation of the project, the shape, size and structure of the aerobic granular sludge are stable, which can ensure efficient carbon reduction, nitrogen removal and phosphorus removal functions, and can resist certain impact effects such as substrate concentration, salinity, and low temperature, overcoming the technical problem that the general aerobic granular sludge technology is easy to disintegrate after being impacted.

[0056] like Figures 1 to 3 As shown, the embodiment of the utility model provides a continuous flow aerobic granular sludge water treatment system with filler addition, the system includes a first hydrolysis acidification tank 101, an anaerobic tank 102, a sludge flocculation tank 103, an aerobic granular sludge reaction tank 104, a sludge selection tank 105, and a secondary sedimentation tank 106 in sequence along the water flow direction from the inlet to the outlet of the wastewater to be treated, including the sludge flocculation tank 103, the aerobic granular sludge reaction tank 104, and the sludge selection tank 105 to form an aerobic granular sludge reaction module, wherein:

[0057] The first hydrolysis and acidification tank 101 adopts the form of an upflow reactor, and the first hydrolysis and acidification tank 101 is designed with a first water distribution system 108 at the lower part and a first hydrolysis and acidification tank outlet weir at the upper part. The outlet water of the first hydrolysis and acidification tank is discharged into the subsequent anaerobic tank 102 through the first hydrolysis and acidification tank outlet weir at the upper part. The first water distribution system 108 is connected to one end of the first hydrolysis and acidification tank inlet pipe 120, and the other end of the first hydrolysis and acidification tank inlet pipe 120 is connected to the first water inlet pump outlet pipe 119 of the first water inlet pump 107. The first water inlet pump inlet pipe 118 is connected to the wastewater tank to be treated, and the first hydrolysis and acidification tank mud inlet pipe 127 is connected to the middle part of the first hydrolysis and acidification tank inlet pipe 120 to input the return light sludge.

[0058] The first hydrolysis acidification tank 101 pre-treats the wastewater, using acid-producing bacteria to decompose complex macromolecular substances in the wastewater into small molecular substances such as acetic acid, so as to make full use of the carbon source in the raw water, while improving the biodegradability of the wastewater and reducing the potential toxicity of the influent. The effluent treated by the first hydrolysis acidification tank 101 enters the subsequent biochemical treatment system.

[0059] In a specific embodiment, whether to fill the first hydrolysis acidification tank 101 with soft or semi-soft fillers can be further determined according to different project conditions.

[0060] The anaerobic tank 102 adopts a complete mixing type. A high-speed mixer 109 is installed in the anaerobic tank 102 to promote complete mixing of the sewage entering the anaerobic tank 102 and the return light sludge input from the anaerobic tank mud inlet pipe 126, so as to fully achieve the degradation of organic matter and anaerobic phosphorus release; the effluent from the anaerobic tank 102 enters the sludge flocculation tank 103.

[0061] Optionally, the water inlet and the water outlet of the anaerobic tank 102 are arranged alternately in the vertical direction, and the water outlet of the anaerobic tank 102 is arranged on a side away from the water inlet of the anaerobic tank 102, and an anaerobic tank filter 110 is provided at the water outlet of the anaerobic tank 102 to ensure that the "crystal nucleus" aerobic granular sludge in the rear-end sludge flocculation tank 103 (aerobic granular sludge with the "crystal nucleus" formed by the hemispherical microbial carrier filler 300 as the carrier as the core) will not flow back into the anaerobic tank 102.

[0062] Specifically, the high-speed mixer 109 is a submersible mixer, and the influent of the anaerobic tank 102 fully reacts with the return sludge to achieve efficient biological carbon reduction and phosphorus removal. The effluent of the anaerobic tank 102 passes through the anaerobic tank filter 110 set at the outlet of the end thereof, and is discharged into the subsequent aerobic granular sludge reaction module.

[0063] The sludge flocculation tank 103 is provided with a guide tube 112, a low-speed mixer 111 and a carbon source dosing ring. The return heavy sludge (the "crystal nucleus" aerobic granular sludge formed based on the hemispherical microbial carrier filler 300) in the sludge flocculation tank 103 is input through the heavy sludge return main pipe 131. Through a high-multiple internal circulation reaction, under the condition of minimal disturbance of the "crystal nucleus" aerobic granular sludge, the return heavy sludge ("crystal nucleus" aerobic granular sludge) and the influent are fully contacted, thereby creating good influent conditions and reaction conditions for the subsequent aerobic granular sludge, and improving the volume utilization rate of the aerobic granular sludge reaction tank 104.

[0064] Optionally, the low-speed mixer 111 in the sludge flocculation tank 103 is a variable-frequency low-speed adjustable mixer to accurately control the particle size and function of the crystal nucleus sludge.

[0065] Specifically, the heavy sludge return main pipe 131 is connected to the middle of the sludge flocculation tank inlet pipe 121 . One end of the sludge flocculation tank inlet pipe 121 is connected to the outlet of the anaerobic tank 102 , and the other end is connected to the inlet of the guide tube 112 .

[0066] The water inlet of the aerobic granular sludge reaction tank 104 is connected to the water outlet of the sludge flocculation tank 103. A uniformly distributed microporous aeration system 113 is provided at the lower part of the aerobic granular sludge reaction tank 104. The "nucleus" aerobic granular sludge is uniformly dispersed in the aerobic granular sludge reaction tank 104 to efficiently degrade pollutants. The microporous aeration system 113 is connected to the blower 116 through the aerobic granular sludge air inlet pipe 128.

[0067] Optionally, the aerobic granular sludge reaction tank 104 may adopt intermittent aeration and may achieve flexible control on carbon reduction and denitrification according to specific requirements of the total nitrogen concentration of the effluent.

[0068] Optionally, the aerobic granular sludge reaction tank 104 can be designed as a single tank or multiple tanks according to the project scale, land conditions, and inlet and outlet water quality requirements.

[0069] Specifically, the aerobic granular sludge reaction tank 104 can be designed as a plug flow type or a complete mixing type. Figure 1 The aerobic granular sludge reaction tank 104 used is a completely mixed type.

[0070] In the aerobic granular sludge reaction tank 104, the "nucleus" aerobic granular sludge is used to achieve rapid granulation of sludge during the start-up period of the biochemical system and to efficiently and stably exert the advantages of aerobic granular sludge during the operation period.

[0071] The "crystal core" aerobic granular sludge uses the hemispherical microbial carrier filler 300 as the carrier core, and utilizes the inner carrier microorganisms of the hemispherical microbial carrier filler 300 and the different functional bacteria in the sludge outside it to achieve efficient carbon reduction, nitrogen removal and phosphorus removal, further improve the removal effect of the aerobic granular sludge reaction tank 104, and ensure the stability of the aerobic granular sludge. The aeration volume of the bottom microporous aeration system 113 is further reduced due to the high efficiency of the "crystal core" aerobic granular sludge, and the air volume comes from the blower 116 connected through the aerobic granular sludge inlet pipe 128.

[0072] The hemispherical microbial carrier filler 300 is an organic biological filler, which contains a sufficient amount of denitrifying bacteria to meet the needs of pollutant metabolism, and can continuously perform denitrification and denitrification functions under suitable conditions. The denitrifying bacteria on the hemispherical microbial carrier filler 300 are firmly fixed inside the hemispherical microbial carrier filler 300, and there is no problem of bacterial strain loss. The hemispherical microbial carrier filler 300 can quickly realize the granulation of sludge, and mature aerobic granular sludge can be grown in a short time (generally within 30 days).

[0073] The unique shape and characteristics of the hemispherical microbial carrier filler 300, such as large specific surface area, moderate density, strong hydrophilicity and bioaffinity, stable structure, good mechanical properties, good wear resistance, and not easy to deform, are applied to the aerobic granular sludge preparation system and method provided in this embodiment. Regardless of whether a continuous flow or sequencing batch process is adopted, a "crystal nucleus" can be quickly formed and a good denitrification function can be continuously exerted. Moreover, the semi-enclosed three-dimensional space formed by its hemispherical shape is conducive to the attachment and growth of functional bacteria such as phosphorus removal bacteria and nitrifying bacteria, thereby accelerating the rapid formation of aerobic granular sludge and ensuring the stability of the structure, thereby ensuring efficient carbon reduction, nitrogen removal and phosphorus removal functions, and overcoming the risk of general aerobic granular sludge technology being easily disintegrated after impact.

[0074] Optionally, the operation control of equipment such as the blower 116 needs to match the actual reaction condition requirements of the "crystal core" aerobic granular sludge to ensure that the overall technology achieves energy saving and consumption reduction.

[0075] Optionally, during the actual reaction process of the "nucleus" aerobic granular sludge, if a carbon source needs to be added, the agent can be added to the water supply pipe in front of the sludge flocculation tank 103 or the aerobic granular sludge reaction tank 104 through a dosing ring.

[0076] The effluent of the aerobic granular sludge reaction tank 104 is discharged into the middle of the sludge selection tank 105 through the reaction tank effluent weir and the aerobic granular sludge reaction tank effluent pipe 122. The outlet of the aerobic granular sludge reaction tank effluent pipe 122 is distributed in the middle of the sludge selection tank 105 and can flow evenly to the surroundings. Sludge selection controllers of different heights are set in the middle and lower part of the sludge selection tank 105, which promote the efficient separation of heavy sludge ("crystal nucleus" aerobic granular sludge) and light sludge (light sludge without "crystal nucleus" aerobic particles) by flexibly adjusting different selection pressure conditions. Through the sedimentation characteristics of the "crystal nucleus" aerobic granular sludge, sludge outlets are set at different heights in the sludge selection tank 5 to achieve the separation of heavy sludge and light sludge, wherein the heavy sludge is returned to the sludge flocculation tank 103 through the heavy sludge return system, re-enters the biochemical reaction system (i.e., the aerobic granular sludge reaction module) and continues to function, and the light sludge is discharged to the secondary sedimentation tank 106 through the sludge selection tank outlet set at the upper part of the sludge selection tank 105 and the secondary sedimentation tank inlet pipe 123;

[0077] Specifically, the heavy sludge return system includes a first heavy sludge return pipe 129 and a second heavy sludge return pipe 130 arranged at different heights in the sludge selection tank 105, which are respectively connected to a first heavy sludge return air lift pipe 133 and a second heavy sludge return air lift pipe 134 controlled by independent electric valves, and the first heavy sludge return air lift pipe 133 and the second heavy sludge return air lift pipe 134 are respectively connected to an air lift main pipe 132, and the air lift main pipe 132 is connected to an air compressor 117. The outlet ends of the first heavy sludge return pipe 129 and the second heavy sludge return pipe 130 are both connected to the heavy sludge return main pipe 131.

[0078] By adjusting the setting heights of the first heavy sludge return pipe 129 and the first heavy sludge return pipe 130, the concentration of the return sludge can be controlled, and the particle size of the "crystal nucleus" aerobic granular sludge in the biochemical reaction system can be reasonably controlled, thereby further improving the stability of the system.

[0079] Specifically, a selection tank filter 114 is provided at the front end of the secondary sedimentation tank water inlet pipe 123 to ensure that the "crystal nucleus" aerobic granular sludge is controlled in the aerobic granular sludge reaction module to avoid the loss of aerobic granular sludge. The secondary sedimentation tank sludge return main pipe 125 and the anaerobic tank mud inlet pipe 126 adopt an air lift method, and the return sludge air lift air pipe 135 controlled by an independent electric valve is connected to the air lift main pipe 132, and the air lift main pipe 132 is connected to the air compressor 117.

[0080] In a specific embodiment, the secondary sedimentation tank 106 is provided with a secondary sedimentation tank outlet weir 115, and the outlet of the secondary sedimentation tank outlet weir 115 is connected to the secondary sedimentation tank outlet pipe 124; the secondary sedimentation tank outlet weir 115 is arranged on the side away from the secondary sedimentation tank inlet pipe 123 to avoid the formation of short-circuit. After the light sludge is discharged into the secondary sedimentation tank 106, it is precipitated and separated in the secondary sedimentation tank 106, and a part of the sludge at the bottom of the tank is respectively returned to the anaerobic tank 102 and the hydrolysis acidification tank 101 through the secondary sedimentation tank sludge return main pipe 125 and the control valve through the anaerobic tank inlet pipe 126 and the first hydrolysis acidification tank inlet pipe 127, and the remaining sludge is discharged from the system through the remaining sludge pipe 136. The supernatant obtained by precipitation and separation in the secondary sedimentation tank 106 is discharged from the entire system as the final effluent through the secondary sedimentation tank outlet weir 115 and the secondary sedimentation tank outlet pipe 124.

[0081] Optionally, the secondary sedimentation tank 106 may be in the form of a vertical flow sedimentation tank, etc., and the precipitated sludge may be returned to the anaerobic tank 102 and the hydrolysis acidification tank 101 to maintain the sludge concentration in the two tanks, and the remaining sludge is discharged from the system and transported to the concentration and dehydration device for further treatment.

[0082] In this embodiment, the application of the "crystal nucleus" formed by the hemispherical microbial carrier filler 300 further improves the sedimentation performance of the sludge, which is conducive to the efficient and stable operation of the sludge in the entire aerobic granular sludge reaction module. By setting a sludge selection controller, the heavy sludge can be gas-lifted and returned to the sludge flocculation tank 103 in combination with the heavy sludge return system, and the light sludge can be discharged into the secondary sedimentation tank 106 through the upper water outlet. In order to avoid the loss of the "crystal nucleus" aerobic granular sludge, a filter 114 matching the aerobic granular sludge is set at the inlet of the light sludge discharge pipe.

[0083] Optionally, the dosage of the hemispherical microbial carrier filler 300 used to form the "crystal nucleus" needs to be determined according to the detailed design of different wastewater types, sludge concentrations, tank shape and size, etc.

[0084] Optionally, the sludge return can be in the form of air lift, and the return volume can be flexibly adjusted according to the operation needs, which can not only meet the needs of different engineering projects, but also achieve energy saving and consumption reduction at the same time.

[0085] This embodiment also provides a continuous flow aerobic granular sludge water treatment method with filler addition, which is implemented based on the continuous flow aerobic granular sludge water treatment system with filler addition, and the method includes the following steps:

[0086] S1. Pretreatment of wastewater: In the first hydrolysis acidification tank 101, acid-producing bacteria are used to decompose complex macromolecular substances in the wastewater into small molecular substances such as acetic acid, so as to make full use of the carbon source in the raw water, while improving the biodegradability of the wastewater and reducing the potential toxicity of the influent;

[0087] S2. Anaerobic carbon reduction and phosphorus removal: The wastewater after hydrolysis and acidification is completely mixed with the return light sludge in the anaerobic tank 102 to fully achieve the degradation of organic matter and anaerobic phosphorus release;

[0088] S3, aerobic granular sludge reaction: after the anaerobic carbon reduction and phosphorus removal, the wastewater is fully contacted with the returned heavy sludge in the sludge flocculation tank 103, and then enters the aerobic granular sludge reaction tank 104, and reacts with the aerobic granular sludge uniformly dispersed in the aerobic granular sludge reaction tank 104, and efficiently degrades the pollutants in the wastewater; the effluent of the aerobic granular sludge reaction tank 104 is discharged into the middle of the sludge selection tank 105, and the sludge selection controller is used to promote the efficient separation of heavy sludge and light sludge, wherein the heavy sludge is returned to the sludge flocculation tank 103 to react with the wastewater, and the light sludge and the effluent after the reaction are discharged to the secondary sedimentation tank 106;

[0089] Among them, the aerobic granular sludge adopts a hemispherical microbial carrier filler 300 as the carrier core ("crystal core"), and utilizes the inner carrier microorganisms of the hemispherical microbial carrier filler 300 and the different functional bacteria in the sludge outside it to achieve efficient carbon reduction, nitrogen removal and phosphorus removal, which can improve the effect of removing pollutants in the aerobic granular sludge reaction tank 104; at the same time, the shape, size and structure of the aerobic granular sludge are stable, which can ensure efficient carbon reduction, nitrogen removal and phosphorus removal functions, and overcome the technical problem that general aerobic granular sludge technology is easy to disintegrate after impact.

[0090] S4, sedimentation and separation: light sludge and the effluent after reaction are precipitated and separated in the secondary sedimentation tank 106, and the obtained supernatant is discharged from the system as the final effluent; a part of the sludge at the bottom of the tank is returned to the anaerobic tank 102 and the hydrolysis acidification tank 101, and the remaining sludge is discharged from the system.

[0091] like Figure 4 , 5 As shown, the utility model embodiment provides a sequencing batch aerobic granular sludge water treatment system with filler addition, the system includes a second hydrolysis acidification tank and an effluent regulating tank 201, a sequencing batch aerobic granular sludge reaction tank 202 in sequence along the water flow direction from the inlet to the outlet of the wastewater to be treated, wherein:

[0092] The second hydrolysis acidification tank and effluent regulating tank 201 include a second hydrolysis acidification tank and an effluent regulating tank. The second hydrolysis acidification tank adopts an upflow reaction tank (the configuration of the second hydrolysis acidification tank is basically the same as the continuous flow process). The second hydrolysis acidification tank is designed with a second water distribution system 203 at the lower part, and a second hydrolysis acidification tank effluent weir is designed at the upper part. The effluent is discharged into the effluent regulating tank through the upper second hydrolysis acidification tank effluent weir. The second water distribution system 203 is connected to the second water inlet pump through the second hydrolysis acidification tank inlet pipe 213, and the second water inlet pump inlet pipe is connected to the wastewater tank to be treated. The lower part of the second hydrolysis acidification tank is connected to the second light sludge return pipe 225 to input the return light sludge.

[0093] The second hydrolysis acidification tank pre-treats the wastewater, using acid-producing bacteria to decompose complex macromolecular substances in the wastewater into small molecular substances such as acetic acid, so as to make full use of the carbon source in the raw water, while improving the biodegradability of the wastewater and reducing the potential toxicity of the influent. The effluent treated by the second hydrolysis acidification tank is discharged into the effluent regulating tank through the effluent weir of the hydrolysis acidification tank, and then enters the subsequent biochemical treatment system according to the sequencing batch process.

[0094] In a specific embodiment, whether to fill the second hydrolysis acidification tank with soft or semi-soft fillers can be further determined according to different project conditions.

[0095] A lifting pump 204 is provided in the effluent regulating tank. The lifting pump 204, in combination with the lifting pump inlet pipe 214 and the lifting pump outlet pipe 215, lifts the effluent treated in the second hydrolysis acidification tank into the sequencing batch aerobic granular sludge reaction tank 202 according to the requirements of the sequencing batch process (sequential batch process treatment cycle timing and other process conditions).

[0096] Optionally, the number of sequencing batch aerobic granular sludge reaction tanks 202 is determined according to the inlet and outlet water quality requirements of the project combined with the land use and other conditions, and a single tank can be used independently or multiple tanks can be connected in parallel. Figure 4 The three groups of sequencing batch aerobic granular sludge reaction tanks are shown.

[0097] Specifically, a sequencing batch aerobic granular sludge reaction tank water inlet pipe 216 is set at the bottom of the sequencing batch aerobic granular sludge reaction tank 202, one end of which is connected to the lifting pump outlet pipe 215, and the other end is connected to the third water distribution system 210. The water flow state in the sequencing batch aerobic granular sludge reaction tank 202 is upflow, with water entering from the bottom and discharging from the top.

[0098] An evenly distributed aerobic granular sludge reaction tank aeration system 211 is provided at the lower part of the sequencing batch aerobic granular sludge reaction tank 202, wherein the aerobic granular sludge reaction tank aeration branch pipes 218 connected to each aeration head are connected to the large-volume blower 205 and the small-volume blower 206 through the aerobic granular sludge reaction tank aeration main pipe 217; the stirring and intermittent aeration of the sequencing batch aerobic granular sludge reaction tank 202 are realized by switching the large-volume blower 205 and the small-volume blower 206 to meet the metabolic function requirements of the aerobic granular sludge.

[0099] Specifically, based on the requirements of tank stirring, intermittent aeration, etc., the aerobic granular sludge reaction tank aeration system 211 adopts the method of alternating large and small fans to maximize energy saving and consumption reduction.

[0100] The top of the sequencing batch aerobic granular sludge reaction tank 202 is evenly provided with an outlet weir trough 208 and an outlet trough 209, and the water produced by the sequencing batch aerobic granular sludge reaction tank 202 is discharged from the system through the outlet branch pipe 221 and the outlet main pipe 222. A sludge selection system 212 is provided in the sequencing batch aerobic granular sludge reaction tank 202 to screen and separate the light and heavy sludges, and to realize the air stripping and return of part of the light sludge to the second hydrolysis acidification tank in combination with the air stripping device, wherein each sequencing batch aerobic granular sludge reaction tank 202 is connected to the second light sludge return pipe 225 through the sludge return pipe 223 and the control valve, and the second light sludge return pipe 225 is connected to the second hydrolysis acidification tank; and the light sludge is discharged to the subsequent sludge concentration and dehydration system through the light sludge return pipe 224 according to the periodic timing. The sludge selection system 212 can simultaneously realize repeated washing of the sludge inside the sequencing batch aerobic granular sludge reaction tank 202, ensuring that the high-quality heavy sludge has a certain particle size and meets the requirements of carbon reduction, nitrogen removal and phosphorus removal. The valve of the sludge selection system 212 can realize automatic control.

[0101] Specifically, the gas lift device includes a gas lift reflux main pipe 219 and a gas lift reflux branch pipe 220. The gas lift reflux main pipe 219 is connected to the second air compressor 207 providing the gas source. The gas lift reflux branch pipe 220 is connected to the gas lift reflux main pipe 219 through a control valve. The gas lift reflux branch pipe 220 is connected to the sludge reflux pipe 223 of each reaction tank. The light sludge is refluxed to the second hydrolysis acidification tank (the front end of the wastewater treatment system) under the action of the gas lift reflux branch pipe 220 to supplement the sludge concentration in the second hydrolysis acidification tank; a filter screen is set at the water inlet of the gas lift reflux branch pipe 220 to ensure the minimum loss of the "crystal nucleus" aerobic granular sludge and the maintenance of the highest concentration.

[0102] Specifically, the sludge selection system 212 can realize automatic control. Through the sludge selection system 212, the selection pressure control conditions can be constructed to promote the shape, particle size and structure stability of the "crystal core" heavy sludge (aerobic granular sludge), and to achieve efficient separation from the light sludge. Through the rapid granulation and stable operation of the "crystal core" aerobic granular sludge, the water quality of the upper effluent system of the sequencing batch aerobic granular sludge reaction tank 202 is greatly improved compared with the general aerobic granular sludge technology during the project startup and operation period.

[0103] Specifically, in the sequencing batch aerobic granular sludge reaction tank 202, by adding hemispherical microbial fillers 300, "nucleus" aerobic granular sludge is formed, and the conditions required by the "selection pressure hypothesis" and the "extracellular polymer hypothesis" are created to maximize the function of aerobic granular sludge in the sequencing batch state.

[0104] The "crystal core" aerobic granular sludge uses a hemispherical microbial carrier filler 300 as the carrier core, and utilizes the inner carrier microorganisms of the hemispherical microbial carrier filler 300 and the different functional bacterial communities in the sludge outside it to achieve efficient carbon reduction, nitrogen removal and phosphorus removal, further improving the pollutant removal effect of the sequencing batch aerobic granular sludge reactor 202.

[0105] Among them, the hemispherical microbial carrier filler 300 is an organic biological filler, and the filler contains a sufficient amount of denitrifying bacteria that can meet the needs of pollutant metabolism, and can continuously play the denitrification and denitrification function under suitable conditions. The denitrifying bacteria on the hemispherical microbial carrier filler 300 are firmly fixed inside the hemispherical microbial carrier filler 300, and there is no problem of bacterial species loss. The unique shape and characteristics of the hemispherical microbial carrier filler 300, such as large specific surface area, moderate density, strong hydrophilicity and biological affinity, stable structure, good mechanical properties, good wear resistance, and not easy to deform, are applied to the aerobic granular sludge preparation system and method provided in this embodiment. Whether it is a continuous flow or a sequencing batch process, it can quickly form a "crystal nucleus" and continuously play a good denitrification function, and the semi-enclosed three-dimensional space formed by its hemispherical shape is conducive to the attachment and growth of functional bacteria such as phosphorus removal bacteria and nitrifying bacteria, accelerating the rapid formation of aerobic granular sludge and ensuring the stability of the structure.

[0106] This embodiment also provides a method for treating wastewater by aerobic batch type granular sludge with filler added, which is implemented based on the aforementioned system for treating wastewater by aerobic batch type granular sludge with filler added. The method comprises the following steps:

[0107] S1. Pretreatment of wastewater: In the second hydrolysis acidification tank and the effluent regulating tank 201, the acid-producing bacteria in the second hydrolysis acidification tank are used to decompose the complex macromolecular substances in the wastewater into small molecular substances such as acetic acid, so as to make full use of the carbon source in the raw water, while improving the biodegradability of the wastewater and reducing the potential toxicity of the influent; the effluent treated in the second hydrolysis acidification tank is discharged into the effluent regulating tank and enters the sequencing batch aerobic granular sludge reaction tank 202 according to the sequencing batch process;

[0108] S2, aerobic granular sludge reaction: after the effluent treated in the second hydrolysis and acidification tank enters the sequencing batch aerobic granular sludge reaction tank 202, it reacts with the aerobic granular sludge evenly dispersed therein under the stirring effect formed by the switching operation of the large and small fans, and efficiently degrades the pollutants in the wastewater; then the sludge selection system 212 is passed to screen and separate the light and heavy sludges, and the air stripping device is combined to realize the air stripping and reflow of part of the light sludge to the second hydrolysis and acidification tank, and the light sludge is discharged to the subsequent sludge concentration and dehydration system according to the cycle sequence; the water produced by the sequencing batch aerobic granular sludge reaction tank 202 is discharged from the system as the final effluent;

[0109] Among them, the aerobic granular sludge adopts a hemispherical microbial carrier filler 300 as the carrier core ("crystal core"), and utilizes the inner carrier microorganisms of the hemispherical microbial carrier filler 300 and the different functional bacterial communities in the sludge outside it to achieve efficient carbon reduction, nitrogen removal and phosphorus removal, which can improve the effect of removing pollutants in the sequencing batch aerobic granular sludge reaction tank 202; at the same time, the shape, size and structure of the aerobic granular sludge are stable, which can ensure efficient carbon reduction, nitrogen removal and phosphorus removal functions, and overcome the technical problem that general aerobic granular sludge technology is easy to disintegrate after impact.

[0110] Example:

[0111] A batch aerobic granular sludge water treatment system with filler addition was applied to a sewage treatment plant in an industrial park. The types of sewage enterprises mainly include fluorine silicon new materials, electronic chemicals, lithium battery new energy, chips and sensors, intelligent equipment manufacturing, biomedicine and health, new energy, special paper, metal products, green food, etc. After the system runs stably, the treatment effect on pollutants in sewage is as follows: Figure 7-10 As shown, the COD removal rate in sewage is 88-94%, the ammonia nitrogen removal rate is 80-95%, the TN removal rate is 65-80%, and the TP removal rate is more than 90%.

[0112] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.

Claims

1. A continuous flow aerobic granular sludge water treatment system with filler addition, characterized in that: The system includes a first hydrolysis acidification tank, an anaerobic tank, a sludge flocculation tank, an aerobic granular sludge reaction tank, a sludge selection tank, and a secondary sedimentation tank in sequence along the flow direction of the wastewater to be treated from the inlet to the outlet, wherein: The first hydrolysis acidification tank adopts an upflow reactor, the lower part of the first hydrolysis acidification tank is designed with a first water distribution system, the upper part is designed with a first hydrolysis acidification tank outlet weir, and the inlet of the first water distribution system is connected to the outlet of the first hydrolysis acidification tank water inlet pipe; The anaerobic tank is provided with a high-speed mixer, and an anaerobic tank filter is provided at the water outlet of the anaerobic tank; the sludge flocculation tank is provided with a guide tube, a low-speed mixer and a carbon source dosing ring, and one end of the sludge flocculation tank inlet pipe is connected to the water outlet of the anaerobic tank, and the other end is connected to the guide tube inlet; The lower part of the aerobic granular sludge reaction tank is provided with a uniformly distributed microporous aeration system, and aerobic granular sludge is uniformly dispersed in the aerobic granular sludge reaction tank, and the aerobic granular sludge uses a hemispherical microbial carrier filler as the carrier core; the outlet of the aerobic granular sludge reaction tank outlet pipe is distributed in the middle of the sludge selection tank, and sludge selection controllers and heavy sludge return systems of different heights are arranged in the middle and lower parts of the sludge selection tank; the upper part of the sludge selection tank is provided with a sludge selection tank outlet; the heavy sludge return system is connected to the sludge flocculation tank inlet pipe through the heavy sludge return main pipe; The secondary sedimentation tank is provided with a secondary sedimentation tank inlet pipe, a secondary sedimentation tank outlet weir, and a secondary sedimentation tank sludge return main pipe. The secondary sedimentation tank inlet pipe is connected to the sludge selection tank outlet, and a selection tank filter is arranged at the front end of the secondary sedimentation tank inlet pipe; the secondary sedimentation tank outlet weir is connected to the secondary sedimentation tank outlet pipe; the secondary sedimentation tank sludge return main pipe is connected to the anaerobic tank and the first hydrolysis acidification tank inlet pipe through the anaerobic tank mud inlet pipe and the first hydrolysis acidification tank mud inlet pipe, respectively.

2. A continuous flow aerobic granular sludge water treatment system with filler addition according to claim 1, characterized in that: The system further comprises a first water inlet pump, the water inlet pipe of the first water inlet pump is connected to the wastewater pool to be treated, and the water outlet pipe of the first water inlet pump is connected to the inlet of the water inlet pipe of the first hydrolysis acidification pool; The mud inlet pipe of the first hydrolysis acidification tank is connected to the middle part of the water inlet pipe of the first hydrolysis acidification tank.

3. The continuous flow aerobic granular sludge water treatment system with filler addition according to claim 1, characterized in that: The first hydrolysis acidification tank is filled with soft or semi-soft fillers.

4. The continuous flow aerobic granular sludge water treatment system with filler addition according to claim 1, characterized in that: The water inlet and the water outlet of the anaerobic tank are arranged alternately in the vertical direction, and the water outlet of the anaerobic tank is arranged on a side away from the water inlet of the anaerobic tank; The high-speed mixer is a submersible mixer; The heavy sludge return main pipe is connected to the middle part of the sludge flocculation tank water inlet pipe.

5. The continuous flow aerobic granular sludge water treatment system with filler addition according to claim 1, characterized in that: The microporous aeration system is connected to the blower through an aerobic granular sludge air inlet pipe; The effluent from the aerobic granular sludge reaction tank is discharged into the middle of the sludge selection tank through the reaction tank effluent weir and the aerobic granular sludge reaction tank effluent pipe; The aerobic granular sludge reaction tank is a plug flow type or a complete mixing type; The aerobic granular sludge reaction tank is a single tank or multiple tanks.

6. The continuous flow aerobic granular sludge water treatment system with filler addition according to claim 1, characterized in that: The hemispherical microbial carrier filler is an organic biological filler, and the hemispherical microbial carrier filler contains denitrifying bacteria that can meet the needs of pollutant metabolism; the denitrifying bacteria on the hemispherical microbial carrier filler are firmly fixed inside the hemispherical microbial carrier filler; The dosage of the hemispherical microbial carrier filler is designed and determined according to different wastewater types, sludge concentrations, and the shape and size of the aerobic granular sludge reaction tank.

7. The continuous flow aerobic granular sludge water treatment system with filler addition according to claim 1, characterized in that: The heavy sludge return system includes a first heavy sludge return pipe and a second heavy sludge return pipe arranged at different heights in the sludge selection tank, which are respectively connected to the first heavy sludge return air lift pipe and the second heavy sludge return air lift pipe controlled by independent electric valves; The first heavy sludge return air lift pipe and the second heavy sludge return air lift pipe are respectively connected to the air lift main pipe, and the air lift main pipe is connected to the air compressor; The outlet ends of the first heavy sludge return pipe and the second heavy sludge return pipe are both connected to the heavy sludge return main pipe; The secondary sedimentation tank sludge return main pipe and the anaerobic tank mud inlet pipe are connected to the air lift main pipe through return sludge air lift ducts controlled by independent electric valves.

8. A continuous flow aerobic granular sludge water treatment system with filler addition according to any one of claims 1 to 7, characterized in that: The secondary sedimentation tank adopts a vertical flow sedimentation tank.

9. A sequencing batch aerobic granular sludge water treatment system with filler addition, characterized in that: The system includes a second hydrolysis acidification tank, an effluent regulating tank, and a sequencing batch aerobic granular sludge reaction tank in sequence along the water flow direction from the inlet to the outlet of the wastewater to be treated, wherein: The second hydrolysis acidification tank and the effluent regulating tank include a second hydrolysis acidification tank and an effluent regulating tank. The second hydrolysis acidification tank adopts an upflow reaction tank. The lower part of the second hydrolysis acidification tank is designed with a second water distribution system, and the upper part is designed with a second hydrolysis acidification tank effluent weir; the lower part of the second hydrolysis acidification tank is connected to the second light sludge return pipe; a lifting pump is arranged in the effluent regulating tank, and the lifting pump is combined with the lifting pump inlet pipe and the lifting pump outlet pipe to lift the effluent of the second hydrolysis acidification tank into the sequencing batch aerobic granular sludge reaction tank according to the needs of the sequencing batch process; The water flow state in the sequencing batch aerobic granular sludge reaction tank is upflow type, and a sequencing batch aerobic granular sludge reaction tank water inlet pipe and a third water distribution system are arranged at the bottom of the sequencing batch aerobic granular sludge reaction tank, and the inlet of the sequencing batch aerobic granular sludge reaction tank water inlet pipe is connected to the lifting pump outlet pipe, and the outlet is connected to the third water distribution system; the lower part of the sequencing batch aerobic granular sludge reaction tank is provided with a uniformly distributed aerobic granular sludge reaction tank aeration system; the upper part of the sequencing batch aerobic granular sludge reaction tank is uniformly provided with outlet weir troughs and outlet troughs; the sequencing batch aerobic granular sludge reaction tank is provided with a sludge selection system, and the sequencing batch aerobic granular sludge reaction tank is connected to the second light sludge return pipe through a sludge return pipe and a control valve; Aerobic granular sludge is evenly dispersed in the sequencing batch aerobic granular sludge reaction tank, and the aerobic granular sludge uses a hemispherical microbial carrier filler as a carrier core.

10. A sequencing batch aerobic granular sludge water treatment system with filler addition according to claim 9, characterized in that: The second water distribution system is connected to the second water inlet pump through the second hydrolysis acidification tank inlet pipe, and the second water inlet pump inlet pipe is connected to the wastewater tank to be treated; According to different project conditions, it is determined whether to fill the second hydrolysis acidification tank with soft or semi-soft fillers.

11. A sequencing batch aerobic granular sludge water treatment system with filler addition according to claim 9, characterized in that: The sequencing batch aerobic granular sludge reaction tank adopts a single independent tank or multiple tanks in parallel; The aerobic granular sludge reaction tank aeration branch pipes connected to each aeration head in the aerobic granular sludge reaction tank aeration system are connected to a large air volume blower and a small air volume blower through an aerobic granular sludge reaction tank aeration main pipe; the stirring and intermittent aeration of the sequencing batch aerobic granular sludge reaction tank are achieved by switching the large air volume blower and the small air volume blower.

12. A sequencing batch aerobic granular sludge water treatment system with filler addition according to claim 9, characterized in that: The sludge selection system is used to construct selection pressure control conditions, thereby promoting the stabilization of the shape, particle size and structure of the aerobic granular sludge and separating it from the light sludge.

13. A sequencing batch aerobic granular sludge water treatment system with filler addition according to any one of claims 9 to 12, characterized in that: The hemispherical microbial carrier filler is an organic biological filler, and the hemispherical microbial carrier filler contains denitrifying bacteria that can meet the needs of pollutant metabolism; the denitrifying bacteria on the hemispherical microbial carrier filler are firmly fixed inside the hemispherical microbial carrier filler.

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