Equipment used for distributing influent water and fermenting concentrated sludge to enhance the MSBR system.

Abstract

The present invention discloses an apparatus for distributing influent and fermenting concentrated sludge to enhance the water-resistance shock function and denitrification and phosphorus removal function of the MSBR system, which comprises an influent distribution device, a hydrolysis fermentation tank and an MSBR system connected thereto, and the influent distribution device, the hydrolysis fermentation tank and the MSBR system are all connected to an external online control platform. This apparatus can effectively compensate for the problems of the large amount of activated sludge loss, the shortage of carbon source in the influent and the decrease in the efficiency of denitrification and phosphorus removal in the MSBR system in the rainy season and high water volume, and can deeply excavate and utilize the carbon source inside the system, effectively reduce the cost of the sewage treatment plant, improve the stability and reliability of the water-resistance shock operation of the MSBR system, enhance the effect of denitrification and phosphorus removal, and also achieve the in-situ reduction of the sludge of the sewage treatment plant and the reduction of the energy consumption for operation.

Description

【Technical Field】 【0001】 The present invention relates to the technical field of sewage treatment, and particularly relates to an apparatus used for the distribution of influent water and the fermentation of concentrated sludge in order to enhance an MSBR system. 【Background Art】 【0002】 Sewage treatment plants often face the double plight of a large hydraulic load impact due to the mixing of rainwater and sewage and a shortage of carbon sources in the influent water during the rainy season. Activated sludge treatment apparatuses such as MSBR are in an overload state, the reaction time and treatment degree are significantly reduced, and the actual hydraulic load and solid load in the sedimentation area far exceed the design values, so it becomes very easy to cause a large loss of activated sludge and collapse the system. The concentration and availability of the organic carbon source in the influent water are important factors that affect the denitrification and phosphorus removal effects of the MSBR system. In order to obtain a highly reliable biological denitrification and phosphorus removal effect, usually, it is required that the COD / TKN of the influent water reaches at least 5 to 8, and the COD / TP reaches 40 or more. Here, the concentration of rapidly biodegradable organic matter (rbCOD) or short-chain fatty acids (SCVFA) in the influent water is particularly important, the ratio of rapidly biodegradable organic matter (rbCOD) to TP is at least 18 to 20 or more, or VFA / TP ≧ 4 to 7, and the concentration of volatile fatty acid VFA in the anaerobic area must reach at least 28 mg / L. 【0003】 However, the water quality of the influent in most existing sewage treatment plants in China makes it difficult to meet the minimum requirements for relevant carbon sources. Furthermore, when the concentration of combined sewage is further diluted during the rainy season, the carbon sources in the influent become insufficient, and in particular, the content of rapidly decomposable organic matter (rbCOD) or short-chain fatty acids (SCVFA) in the influent is insufficient, severely limiting the denitrification and phosphorus removal capacity of the process. In order to improve the biological denitrification and phosphorus removal efficiency of MSBR systems when water volume is high during the rainy season and to achieve discharge of total nitrogen (TN) and total phosphorus (TP) in wastewater at standard values, it is often necessary to strictly control the influent volume and add glucose, sodium acetate, methanol, etc., or chemical phosphorus removers to supplement organic carbon sources. This increases the operating costs of sewage treatment plants, affects the operational stability of the system, and simultaneously worsens the degree of pollution in the receiving water body. 【0004】 The main improvements in the patented "Improved MSBR Process Wastewater Treatment System" involve adding a chemical dissolution pool and introducing relevant chemicals to bring the water quality up to standards, but it does not address the problems of inflow volume diversion and carbon source deficiency under heavy loads. 【0005】 In the patent "Municipal wastewater treatment system and process to enhance denitrification," the functional compartment of the MSBR is redesigned, with the main improvement being the addition of a water supply point to the pre-anaerobic zone, which rapidly mixes the return sludge and influent water to reach an anaerobic state. However, the problems of high hydroelectric and offshore loads and carbon source shortages associated with the MSBR are not adequately addressed. [Overview of the project] [Problems that the invention aims to solve] 【0006】 The present invention aims to provide an apparatus used for distributing influent water and fermenting concentrated sludge in order to enhance an MSBR system, comprising an influent water distribution device, a hydrolysis fermentation tank and an MSBR system connected thereto, wherein the influent water distribution device, the hydrolysis fermentation tank and the MSBR system are all connected to an external online control platform. [Means for solving the problem] 【0007】 The inflow water distribution device includes distribution piping and associated valves and instruments and is used to distribute the amount of water flowing into the MSBR system. Inside the hydrolysis fermentation tank, there is a stirrer for stirring the sludge flowing into the tank, and outside the hydrolysis fermentation tank, there is a supply pump for transferring the sludge in the MSBR system into the tank. 【0008】 As a further explanation of the above technical solution, the inflow water distribution device is: Three pipes, each with an electromagnetic flow meter attached along the way, An electric ball valve attached to the water inlet at the front end of the electromagnetic flow meter, Includes a first sludge concentration meter. 【0009】 As a further explanation of the above technical solution, the MSBR system includes an anaerobic unit, an aerobic unit, a first SBR unit and a second SBR unit, wherein the anaerobic unit has a water inlet at its bottom, which is connected to an intermediate pipe of the inflow water distribution device, and the aerobic unit also has a water inlet at its bottom, which is connected to pipes on both sides of the inflow water distribution device. 【0010】 As a further explanation of the above technical solution, the first sludge concentration meter is provided inside the first SBR unit and the second SBR unit, and a sludge return pump is connected to the first SBR unit and the second SBR unit, respectively. 【0011】 As a further explanation of the above technical solution, the MSBR system further comprises sequentially connected mud separation units (18), a pre-anaerobic unit (19), an anaerobic unit (10), a first anaerobic unit, and a second anaerobic unit, the second anaerobic unit being connected to an aerobic unit, the first SBR unit and the second SBR unit being connected to the mud separation unit via a sludge return pump, and the first anaerobic / aerobic unit and the second anaerobic / aerobic unit being connected to an aerobic unit. 【0012】 As a further explanation of the above technical solution, the shell of the hydrolysis fermentation tank is provided with openings for a second sludge concentration meter, an ORP meter, a pH meter, a thermometer, and a liquid level meter, and devices corresponding to all of these openings are attached. 【0013】 As a further explanation of the above technical solution, a supply port is also provided at the upper end of the shell of the hydrolysis fermentation tank, the supply pump is connected to the outside of the supply pipe connected to the supply port, and a plurality of reflux pipes are provided on the outside of the shell of the hydrolysis fermentation tank. 【0014】 As a further explanation of the above technical solution, the reflux tubing includes three tubes. 【0015】 As a further explanation of the above technical solution, the hydrolysis fermentation tank is provided with an overflow port at the upper end of the shell and a vent at the lower end of the shell. 【0016】 As a further explanation of the above technical solution, the MSBR system and the hydrolysis fermentation tank are connected via piping ducts. 【0017】 As a further explanation of the above technical solution, the sludge is concentrated by the aforementioned pre-anoxic unit. 【0018】 As a further explanation of the above technical solution, a portion of the concentrated return sludge flows through the supply pump into the hydrolysis fermentation tank. 【0019】 As a further explanation of the above technical solution, the residence time of the sludge flowing into the hydrolysis fermentation tank is 1-3 days. 【0020】 The present invention has the following beneficial effects. 1. By improving the technology for distributing inflow water to multiple points, the present invention can increase the processing capacity of an MSBR system during the rainy season to 400% to 500% or more of the design flow rate during the dry season, and effectively avoid the collapse of the MSBR system caused by the massive loss of activated sludge during overload operation in the rainy season. 【0021】 2. By adjusting the operating cycles of the SBR units on both sides of the MSBR system, the MSBR system can perform sedimentation and drainage simultaneously. In this case, both the solid and hydraulic loads that the sedimentation region of the MSBR system can withstand are doubled compared to the conventional operating mode. 【0022】 3. The present invention prevents a large amount of activated sludge from being introduced into the sedimentation zone of the MSBR system after the diversion treatment, thereby reducing the load of solids flowing into the sedimentation zone, preventing the loss of a large amount of sludge, and preventing the wastewater quality from exceeding standards. 【0023】 4. The present invention can ensure that the MSBR system can effectively handle large hydroelectric shock loads at low concentrations during the rainy season, and at the same time, can quickly restore the MSBR system's processing capacity for normal water quality concentrations and volumes after the water volume has decreased. 【0024】 5. The present invention utilizes the unique return sludge concentration function of the MSBR system, that is, the return sludge is transferred to the sludge-water separation unit for concentration, and then flows into the pre-anaerobic unit for concentration. A part of the concentrated return sludge is supplied from the supply port through the supply pump and flows into the hydrolysis fermentation tank for retention for 1 to 3 days. In addition, the stirrer is intermittently started to drive the stirring blades to stir inside the hydrolysis fermentation tank, so that a mixed liquid containing a large amount of rapidly degradable organic matter (rbCOD) or short-chain fatty acids (SCVFA) can be refluxed to the anaerobic unit of the MSBR system through the reflux pipe to replenish the carbon source. The anaerobic unit can be intermittently stirred to enhance the utilization and growth of the carbon source by activated sludge, thereby achieving the effect of enhancing the denitrification and phosphorus removal of the MSBR system. 【0025】 6. The present invention hydrolyzes and ferments the concentrated sludge of the MSBR system in a side stream (SSH) and maximally utilizes the "internal carbon source", so there is no need to additionally add glucose, sodium acetate, sodium acetate, etc. to supplement the organic carbon source, or add a chemical phosphorus removal agent, achieving the optimization of the denitrification and phosphorus removal effect and operation stability of the MSBR system, and at the same time, the operation cost can also be reduced. 【0026】 7. The present invention effectively compensates for the problems of insufficient carbon source of the influent water of the MSBR system and decreased denitrification and phosphorus removal efficiency when the water volume is large in the rainy season, deeply excavates and utilizes the carbon source inside the system, effectively reduces the cost of the sewage treatment plant, improves the operation stability and reliability of the MSBR system, enhances the denitrification and dephosphorization effect, and can also achieve the in-situ reduction of the sludge of the sewage treatment plant and the reduction of the energy consumption for operation. 【Brief Description of the Drawings】 【0027】 [Figure 1] It is a schematic diagram of the principle of the device used for the distribution of influent water and the fermentation of concentrated sludge to enhance the MSBR system provided by the present invention. [Figure 2]This is another schematic diagram of the apparatus used for distributing influent water and fermenting concentrated sludge, in order to enhance the MSBR system provided in the present invention. [Figure 3] This is a side view of a hydrolysis fermentation tank of equipment used for distributing influent water and fermenting concentrated sludge, in order to enhance the MSBR system provided in the present invention. [Figure 4] This is a front view of the hydrolysis fermentation tank of the apparatus used for distributing influent water and fermenting concentrated sludge, in order to enhance the MSBR system provided in the present invention. [Figure 5] This is a top view of a hydrolysis fermentation tank in an apparatus used for distributing influent water and fermenting concentrated sludge, in order to enhance the MSBR system provided in the present invention. [Modes for carrying out the invention] 【0028】 The technical solutions in embodiments of the present invention will be clearly and completely described below with reference to the drawings of embodiments of the present invention, and obviously the embodiments described are only a part of, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort based on embodiments of the present invention are within the scope of the protection of the present invention. 【0029】 Referring to Figures 1-5, an embodiment provided in the present invention is as follows: To enhance the MSBR system, the apparatus used for distributing influent water and fermenting concentrated sludge comprises an influent water distributor 1, a hydrolysis fermentation tank 2, and an MSBR system 3 connected thereto, the influent water distributor 1, the hydrolysis fermentation tank 2, and the MSBR system 3 are all connected to an external online control platform 4, and a stirrer 5 is provided inside the hydrolysis fermentation tank 2 for stirring the sludge flowing into the tank. 【0030】 According to the above technical solution, when the hydroelectric shock load is large during the rainy season, the inflow water distribution device 1 controls the flow velocity of the inflow water with an electric ball valve 7 and measures the flow rate of the inflow water in real time with an electromagnetic flow meter 8 to perform rational control and distribution of the inflow water. 【0031】 In the initial stages of rainwater flow, the concentration of pollutants in the initial rainwater is high. When the water volume increases to 1.5 times the dry season design flow rate, diluted rainwater begins to flow in, and at this point, the system can switch on the diversion mode. 【0032】 Referring to Figures 1 and 2, the influent water distribution device 1 transfers the influent water to the leading and trailing regions of the anaerobic unit 10 and the aerobic unit 13, respectively. At this time, the influent volume of the anaerobic unit 10 becomes 1 to 1.5 times the design flow rate for the dry season. After treatment in the anaerobic unit 10, the mixed liquid in the anaerobic unit 10 is transferred to the first anaerobic unit 11 and the second anaerobic unit 12 for denitrification. The denitrified sewage enters the aerobic unit 13 where organic matter is decomposed, and the decomposed sewage enters the first anaerobic / aerobic unit 14. Nitrification and denitrification are enhanced by the second anaerobic / aerobic unit 15, and the sludge is transferred to the first SBR unit and the second SBR unit 17 for settling. The settled sludge is then transferred to the mud and water separation unit 18 for separation and concentration. The concentrated sludge is then transferred to the pre-anaerobic unit 19 for further treatment, and then transferred to the hydrolysis fermentation tank 2 via piping to the anaerobic unit 10 or the sludge supply pump 6. Simultaneously, the mud and water separation unit 18 moves the concentrated supernatant liquid to the aerobic unit 13 via piping to continue the reaction. 【0033】 Furthermore, the online control platform 4 adjusts the operating cycles of the first SBR unit 16 and the second SBR unit 17 of the MSBR system 3, so that the MSBR system 3 can perform sedimentation and drainage simultaneously. 【0034】 The remaining water volume distributed to the leading and trailing regions of the aerobic unit 13 via the inflow water distribution device 1 is used to return sludge from the first SBR unit 16 and the second SBR unit 17 to the mud-water separation unit 18 by the sludge return pump 20. This is controlled by a frequency converter, and sludge return is strengthened when the flow rate is high during the rainy season to avoid sludge loss. Here, sludge concentration meters 9 are installed in the first SBR unit 16 and the second SBR unit 17 of the MSBR system, respectively, and are used to monitor the sludge concentration and changes in the height of the sludge layer in the first SBR unit 16 and the second SBR unit 17 during the settling and drainage period, and to adjust the flow rate distribution and the amount of sludge returned. 【0035】 The sludge in the MSBR system passes through the sludge return pumps 20 installed in the first SBR unit 16 and the second SBR unit 17. Utilizing the unique sludge concentration function of the MSBR system 3, the returned sludge is transferred to the mud-water separation unit 18 for concentration, then flowed into the pre-anaerobic unit 19 for further concentration. A portion of the concentrated returned sludge is then flowed from the supply port 6 through the supply pump 26 into the hydrolysis fermentation tank 2, where it remains for 1 to 3 days. The agitator 5 is intermittently activated to drive the agitator blades and agitate the contents of the hydrolysis fermentation tank 2. This allows a mixture containing a large amount of rapidly decomposing organic matter (rbCOD) or short-chain fatty acids (SCVFA) to be returned to the anaerobic unit 10 of the MSBR system 3 via the reflux pipe 27, thereby supplying a carbon source. This enhances the denitrification and phosphorus removal effects of the MSBR system. The digested and stable remaining sludge is discharged from the vent 29 at the bottom of the hydrolysis fermentation tank 2, and the discharged sludge is processed in subsequent steps such as drying and reuse. 【0036】 Furthermore, the shell of the hydrolysis fermentation tank 2 is provided with openings for a second sludge concentration meter 21, an ORP meter 22, a pH meter 23, a thermometer 24, and a liquid level gauge 25. Devices corresponding to all of these openings are installed, and all of these devices are located near the top of the hydrolysis fermentation tank 2. The OPR meter 6 is used to detect the OPR value, i.e., oxidation-reduction potential, in the hydrolysis fermentation tank 2. The pH meter 23 is used to monitor the pH value of the mixed liquid. The thermometer 24 and liquid level gauge 25 are used to monitor the temperature and liquid level of the mixed liquid. 【0037】 All data detected by the above instruments is monitored by the online control platform 4, which can control and monitor the above equipment and instruments, and at the same time adjust the settings of related parameters such as the operating cycle of the MSBR system 3. 【0038】 Furthermore, important parameters affecting the hydrolysis process and efficiency of activated sludge include temperature, SRT, MLSS, pH value, and mixing conditions in the fermentation tank. If other conditions remain constant, the hydrolysis rate and sludge concentration exhibit a linear relationship within a certain range. The supply concentration of concentrated sludge in the MSBR system can typically reach 8,000 to 12,000 mg / L. Compared to the sludge concentration of approximately 3,000 mg / L in conventional activated sludge hydrolysis, using the MSBR system 3 in combination with the hydrolysis fermentation tank 2 significantly improves the hydrolysis rate of the sludge hydrolysis fermentation apparatus. Simultaneously, it can increase the concentration of rapidly decomposable organic matter (rbCOD) or short-chain fatty acids (SCVFA) produced by hydrolysis by at least one factor. At the same time, it can avoid drawbacks such as the sludge residence time (SRT) being too long, causing the anaerobic hydrolysis process of activated sludge to enter the methane production stage, and the apparatus volume being too large. 【0039】 Furthermore, a supply port 26 is provided at the upper end of the shell of the hydrolysis fermentation tank 2, and a supply pump 6 is connected to the outside of the supply pipe connected to the supply port 26. Multiple reflux pipes 27 are provided on the outside of the shell of the hydrolysis fermentation tank 2, and a portion of the concentrated return sludge flows into the hydrolysis fermentation tank from the supply port 26 through the supply pump 6. The supply port 26 is located above the hydrolysis fermentation tank 2, allowing more return sludge to pass through. 【0040】 Furthermore, since the reflux tube 27 contains three tubes, the mixture of rapidly decomposing organic matter (rbCOD) or short-chain fatty acids (SCVFA) can pass through multiple reflux tubes 27 and be returned to the anaerobic unit of the MSBR system 3, thereby replenishing the carbon source of the MSBR system 3, and thereby enhancing the denitrification and phosphorus removal effect. 【0041】 Furthermore, after the stabilized return sludge is discharged from the vent 29, the amount of return sludge can be adjusted accordingly based on the corresponding values ​​monitored by the ORP meter 22 and the pH meter 23. 【0042】 Furthermore, the MSBR system 3 and the hydrolysis fermentation tank 2 can be connected via piping ducts, and the MSBR system 3 and the hydrolysis fermentation tank 2 can be integrated, thereby reducing the overall volume of the apparatus. 【0043】 Furthermore, the sludge is concentrated by the pre-oxygen-free unit 19. 【0044】 Furthermore, a portion of the concentrated return sludge passes through the supply pump 6 and flows into the hydrolysis fermentation tank 2. 【0045】 Furthermore, the residence time of the sludge flowing into the hydrolysis fermentation tank 2 is 1 to 3 days, preferably 2 days. This significantly increases the content of rapidly decomposable organic matter (rbCOD) or short-chain fatty acids (SCVFA) separated from the sludge, and allows for the supply of a sufficient carbon source at once. 【0046】 Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit it. While the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention. [Explanation of symbols] 【0047】 1 Inflow water distribution device 2 Hydrolysis Fermentation Tank 3 MSBR system 4. Online control platform 5. Agitator 6. Supply pump 7 Electric Ball Valve 8 Electromagnetic flowmeter 9. First sludge concentration meter 10 Anaerobic Units 11. First anaerobic unit 12. Second anaerobic unit 13 Aerobic Units 14. Unit 1 (Anoxic / Aerobic) 15. Second Anaerobic / Aerobic Unit 16. Unit 1SBR 17. Unit 2 of the SBR 18. Slurry Separation Unit 19 Pre-anaerobic unit 20 Sludge return pump 21. Second sludge concentration meter 22 ORP meter 23 pH meter 24 Thermometer 25 Level gauge 26 supply ports 27 Reflux tube 28 Overflow port 29 Ventilation holes

Claims

[Claim 1] A device used for distributing influent water and fermenting concentrated sludge in order to enhance the MSBR system, The system comprises an inflow water distribution device (1), a hydrolysis fermentation tank (2), and an MSBR system (3) connected thereto, and the inflow water distribution device (1), the hydrolysis fermentation tank (2), and the MSBR system (3) are all connected to an external online control platform (4). The MSBR system (3) includes an anaerobic unit (10), an aerobic unit (13), a first SBR unit (16), and a second SBR unit (17). The anaerobic unit (10) has a water inlet at its bottom, which is connected to the intermediate pipe of the inflow water distribution device (1). The aerobic unit (13) also has a water inlet at its bottom, which is connected to the pipes on both sides of the inflow water distribution device (1). A first sludge concentration meter (9) is provided inside the first SBR unit (16) and the second SBR unit (17), and a sludge return pump (20) is connected to the first SBR unit (16) and the second SBR unit (17), respectively. The MSBR system (3) further includes sequentially connected mud separation unit (18), pre-anaerobic unit (19), anaerobic unit (10), first anaerobic unit (11), and second anaerobic unit (12), the second anaerobic unit (12) being connected to an aerobic unit (13), the first SBR unit (16) and second SBR unit (17) being connected to the mud separation unit (18) via a sludge return pump (20), and the first anaerobic / aerobic unit (14) and second anaerobic / aerobic unit (15) being connected to an aerobic unit (13). The inflow water distribution device (1) includes a distribution pipe, an electric ball valve (7), and an electromagnetic flow meter (8), and is used to distribute the amount of water flowing into the MSBR system (3). Inside the hydrolysis fermentation tank (2), a stirrer (5) is provided to agitate the sludge flowing into the tank, and a mixture of rapidly decomposable organic matter (rbCOD) and short-chain fatty acids (SCVFA) is produced. Outside the hydrolysis fermentation tank (2), a supply pump (6) is connected to transfer the sludge in the MSBR system (3) into the tank. During use, the sludge in the MSBR system passes through the sludge return pumps (20) provided in the first SBR unit (16) and the second SBR unit (17), and utilizes the return sludge concentration function of the MSBR system (3) to transfer the return sludge to the mud-water separation unit (18) for concentration, then flows into the pre-anoxic unit (19) for concentration, a portion of the concentrated return sludge flows into the hydrolysis fermentation tank (2) and remains there for 1 to 3 days, passes through the agitator (5) for intermittent stirring, and a mixture of rapidly decomposable organic matter (rbCOD) and short-chain fatty acids (SCVFA) inside the hydrolysis fermentation tank (2) is returned to the anaerobic unit (10) of the MSBR system (3) via the reflux pipe (27) to supply a carbon source. This apparatus is used for distributing influent water and fermenting concentrated sludge in order to enhance the MSBR system. [Claim 2] The aforementioned inflow water distribution device (1) is, Three pipes, each with an electromagnetic flow meter (8) attached in the middle, An electric ball valve (7) is installed between the electromagnetic flow meter (8) and the water inlet of the inflow water distribution device (1), Apparatus used for distributing influent water and fermenting concentrated sludge in order to enhance the MSBR system according to claim 1, characterized by comprising a first sludge concentration meter (9). [Claim 3] The shell of the hydrolysis fermentation tank (2) is provided with an opening for a second sludge concentration meter (21), an opening for an ORP meter (22), an opening for a pH meter (23), an opening for a thermometer (24), and an opening for a liquid level meter (25), and devices corresponding to all of the openings are attached to the apparatus used for distributing influent water and fermenting concentrated sludge in order to enhance the MSBR system according to claim 1. [Claim 4] A device used for distributing influent water and fermenting concentrated sludge in order to enhance the MSBR system according to claim 1, characterized in that a supply port (26) is also provided at the upper end of the shell of the hydrolysis fermentation tank (2), the supply pump (6) is connected to the outside of the supply pipe connected to the supply port (26), and a plurality of reflux pipes (27) are provided on the outside of the shell of the hydrolysis fermentation tank (2). [Claim 5] The apparatus used for distributing influent water and fermenting concentrated sludge to enhance the MSBR system according to claim 4, characterized in that the reflux pipe (27) includes three pipes. [Claim 6] An apparatus used for distributing influent water and fermenting concentrated sludge in order to enhance the MSBR system according to claim 1, characterized in that an overflow port (28) is provided at the upper end of the shell of the hydrolysis fermentation tank (2), and a vent (29) is provided at the lower end of the shell. [Claim 7] The MSBR system (3) and the hydrolysis fermentation tank (2) are connected via a piping duct, and the apparatus is used for distributing influent water and fermenting concentrated sludge in order to enhance the MSBR system according to claim 1. [Claim 8] Apparatus used for distributing influent water and fermenting concentrated sludge to enhance the MSBR system according to claim 1, characterized in that the sludge is concentrated by the pre-anoxic unit (19). [Claim 9] A device used for distributing influent water and fermenting concentrated sludge in order to enhance the MSBR system according to claim 1, characterized in that a portion of the concentrated return sludge flows through the supply pump (6) into the hydrolysis fermentation tank (2). [Claim 10] The apparatus used for distributing influent water and fermenting concentrated sludge in order to enhance the MSBR system according to claim 6, characterized in that the residence time of the sludge flowing into the hydrolysis fermentation tank (2) is 1 to 3 days.

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