Assembly type skid-mounted DTSAOA sewage treatment equipment
The DTSAOA wastewater treatment equipment, with its prefabricated design, utilizes a large bubble mixer and an automatic sludge circulation system to solve the problems of high maintenance costs and long deployment cycles caused by mechanical mixing and civil engineering, achieving efficient wastewater treatment and rapid deployment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JIANGSU BOLKE ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2026-04-03
- Publication Date
- 2026-05-05
AI Technical Summary
Existing DTSAOA wastewater treatment equipment suffers from high maintenance costs and high failure rates due to the use of mechanical agitation and a large number of decentralized core components, as well as long deployment cycles due to its civil engineering construction.
The modular design, through structures such as a large bubble mixer, aeration section, sludge mixing and circulation distributor, and drainage section, enables sludge-water mixing without mechanical stirring, automatic sludge circulation and distribution, and alternating operation of two PS tanks, thus solving the problems of high maintenance costs and long deployment cycles caused by mechanical stirring and dispersing equipment.
It achieves large bubble pulse mixing without mechanical moving parts, automatic circulation and distribution, and alternating operation of two PS pools, which reduces maintenance costs and failure rate and shortens the deployment cycle.
Smart Images
Figure CN121974493A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wastewater treatment technology, specifically to a modular skid-mounted DTSAOA wastewater treatment equipment. Background Technology
[0002] The DTSAOA process is a highly efficient wastewater treatment technology that combines the traditional A²O (anaerobic-anoxic-aerobic) process with the SBR (sequencing batch reactor) process. This process achieves excellent nitrogen and phosphorus removal effects through sequencing batch sludge circulation and enhanced endogenous denitrification. It also has the technical advantages of strong resistance to shock loads, no need for external carbon sources, and relatively low operating energy consumption. It is particularly suitable for wastewater treatment scenarios with high requirements for total nitrogen in effluent and insufficient carbon sources in influent.
[0003] However, existing DTSAOA processes generally employ traditional civil engineering structures, which have significant drawbacks in practical engineering applications. First, the construction period is long, the land area is large, and the requirements for site geological conditions are high, making it difficult to adapt to the small-scale, decentralized wastewater treatment needs of towns and remote factories, and also unable to meet the rapid deployment requirements for emergency treatment scenarios such as surges in wastewater volume during the flood season or sudden water pollution incidents. Second, the core equipment of existing systems, such as sludge return pumps, digestate return pumps, and sludge scrapers, are usually dispersed between various tanks, which not only increases energy consumption and failure risks but also leads to high maintenance and management difficulties and operating costs. Third, in order to ensure thorough mixing of sludge and water, traditional AOA processes generally install mechanical stirring devices in the anaerobic and anoxic tanks. However, mechanical stirring devices suffer from severe wear of moving parts, easy seal failure, and high requirements for regular maintenance. Furthermore, in high-viscosity, high-solids-content wastewater, they are prone to entanglement, blockage, and even motor burnout, further increasing maintenance costs and operational risks. Therefore, based on the above problems, a prefabricated skid-mounted DTSAOA wastewater treatment equipment is proposed. Summary of the Invention
[0004] The purpose of this invention is to provide a prefabricated skid-mounted DTSAOA wastewater treatment equipment to solve the problems of high maintenance costs and high failure rates caused by the use of mechanical agitation and a large number of dispersed core equipment in existing DTSAOA wastewater treatment equipment, as well as long deployment cycles caused by civil engineering.
[0005] To achieve the above objectives, the present invention provides the following technical solution: A prefabricated skid-mounted DTSAOA wastewater treatment equipment includes a base. A control box and a tank section are mounted on the upper side of the base. The tank section includes a tank box fixed to the upper side of the base. An anaerobic A tank with an upward opening is located on the left side of the tank box. A biological reactor OA tank with an upward opening is located on the right side of the anaerobic A tank. A first PS tank with an upward opening is located on the rear right side of the tank box. A second PS tank with an upward opening is located on the front right side of the tank box. A guide channel is provided between the anaerobic A tank and the biological reactor OA tank, located on the inner side of the tank box. Electrically controlled valves are installed between the biological reactor OA tank and the first PS tank and the second PS tank. An air supply section is installed on the upper left side of the base. The air supply unit includes a screw blower fixed to the upper side of the base. A multi-port pipe is installed on the right side of the screw blower, and an electrically controlled three-way valve is installed on the right side of the multi-port pipe. A large bubble mixer is installed at the right end of the electrically controlled three-way valve. The large bubble mixer includes an air supply pipe fixedly connected to and communicating with the right end of the electrically controlled three-way valve. A pair of pipes at the front of the air supply pipe are fixedly connected to a ventilation frame at their lower ends. Several air storage plates are fixedly connected to the upper interfaces of the ventilation frames. A pulse controller is installed on the rear pipe of the air supply pipe. An aeration unit is installed at the upper end of the electrically controlled three-way valve. Sludge mixing and circulation distributors are installed at both ends of the multi-port pipe.
[0006] Preferably, the sludge mixing and circulating distributor includes a conveying section installed on the upper side of a multi-port pipe. The conveying section includes a diversion pipe fixedly connected and communicating with the upper end of the multi-port pipe. A control valve one is installed on the straight section of the diversion pipe, and a control valve two is installed on the bend section of the diversion pipe. An air-lifting section is installed on the right side of the bend section of the diversion pipe. The air-lifting section includes a supply pipe fixedly connected and communicating with the bend section of the diversion pipe. An inner pipe is fixedly connected to the front end of the supply pipe, and an outer pipe is fixedly connected to the outer side of the inner pipe. A distribution pipe is fixedly connected to the upper left side of the outer pipe, and a distribution pipe is fixedly connected to the lower side of the outer pipe. A mixing section is installed at the distribution pipe.
[0007] Preferably, the mixing section includes several mud collection hoods fixed to and connected to the lower side of each lower pipe of the distribution pipe. Each hole of the mud collection hood is fixedly connected to a stirring air nozzle. An air supply ring connected to the stirring air nozzle is sleeved on the outer side of each mud collection hood. An air supply branch pipe is fixedly connected to the upper side of each air supply branch pipe. An air supply main pipe is fixedly connected to the upper side of each air supply branch pipe. The left end of the air supply main pipe is fixedly connected to and connected to the straight pipe of the distribution pipe.
[0008] Preferably, the air-lift section, transfer pipe, and mixing section of the sludge mixing and circulation distributor on the front side are all located in the second PS tank, and the air-lift section, transfer pipe, and mixing section of the sludge mixing and circulation distributor on the rear side are all located in the first PS tank. The distribution pipes are all fixed inside the tank, and the pair of pipe openings on the left side of the distribution pipes are respectively connected to the anaerobic A tank and the biological reactor OA tank.
[0009] Preferably, the aeration frame on the left is installed in the anaerobic A tank, and the aeration frame on the right is installed in the biological reactor OA tank. The gas storage plates are installed in both the anaerobic A tank and the biological reactor OA tank.
[0010] Preferably, the aeration section includes an aeration pipe fixed to and connected to an electrically controlled three-way valve. Several aeration connectors are fixedly connected to the lower side of the horizontal pipe of the aeration pipe. Each aeration connector is equipped with a tubular aerator located in the bioreactor OA tank.
[0011] Preferably, a drainage section is installed on the right side of the pool section, a base plate is fixedly connected to the right side of the pool box, a liquid pump is installed on the upper side of the base plate, an electrically controlled three-way valve II is installed on the left side of the liquid pump, and liquid suction pipes are installed at both ends of the electrically controlled three-way valve II in a connected manner. The rear liquid suction pipe is connected to the first PS pool, and the front liquid suction pipe is connected to the second PS pool. A filter screen is fixedly connected to the lower side of each liquid suction pipe, and a drain pipe is installed on the right side of the liquid pump.
[0012] Compared with the prior art, the beneficial effects of the present invention are: In this invention, the structure comprising a tank section, an air supply section, a large bubble mixer, an aeration section, a sludge mixing and circulation distributor, and a drainage section allows for interconnection and process switching between tanks via a guide channel and electrically controlled valves. The air supply section provides a shared air source for the large bubble mixer, aeration section, and sludge mixing and circulation distributor. The large bubble mixer releases intermittent large bubbles through an air storage plate to achieve sludge-water mixing without mechanical stirring. The aeration section and large bubble mixer can operate alternately, enabling the OA (Automatic Aeration) tank to serve two purposes and achieving dynamic spatiotemporal control of the DTSAOA system. The sludge mixing and circulation distributor utilizes the airlift principle to automatically control sludge. The system features a circulation and distribution system, while the drainage section enables alternating drainage and continuous effluent discharge from the first and second PS tanks. This allows the prefabricated skid-mounted DTSAOA wastewater treatment equipment to perform large-bubble pulse mixing in the anaerobic A tank and biological OA tank without mechanical moving parts. It also enables automatic airlift circulation and distribution of sludge at the bottom of the PS tank, and allows for continuous wastewater treatment operations with alternating operation between the first and second PS tanks. This solves the problems of high maintenance costs and high failure rates caused by the use of mechanical stirring and a large number of dispersed core equipment in existing DTSAOA wastewater treatment equipment, as well as long deployment cycles due to the civil engineering approach. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Top view of the structure of the middle section; Figure 3 This is a schematic diagram of the structure of the pool section of the present invention; Figure 4 This is a schematic diagram of the gas delivery section of the present invention; Figure 5 This is a schematic diagram of the structure of the large bubble mixer of the present invention; Figure 6 This is a schematic diagram of the aeration section of the present invention; Figure 7 This is a partial cross-sectional view of the sludge mixing and circulating distributor of the present invention; Figure 8 For the present invention Figure 7 A magnified structural diagram at point A; Figure 9 This is a schematic diagram of the drainage section of the present invention.
[0014] In the diagram: 1. Base; 2. Control box; 3. Tank section; 31. Tank tank; 32. Anaerobic A tank; 33. Biological reactor OA tank; 34. First PS tank; 35. Second PS tank; 36. Guide channel; 37. Electrically controlled valve; 4. Gas supply section; 41. Screw blower; 42. Multi-port pipe; 43. Electrically controlled three-way valve; 5. Large bubble mixer; 51. Air supply pipe; 52. Ventilation frame; 53. Air storage plate; 54. Pulse controller; 6. Aeration section; 61. Aeration supply pipe; 62. Aeration connection pipe; 63. Tubular aerator; 7. Wastewater Sludge mixing and circulating distributor; 71. Conveying section; 711. Diverting pipe; 712. Control valve one; 713. Control valve two; 72. Air lifting section; 721. Supply pipe; 722. Inner pipe; 723. Outer pipe; 73. Distribution pipe; 74. Transfer pipe; 75. Mixing section; 751. Sludge collection hood; 752. Agitating air nozzle; 753. Air supply ring; 754. Air supply branch pipe; 755. Air supply main pipe; 8. Drainage section; 81. Seat plate; 82. Liquid pump; 83. Electrically controlled three-way valve two; 84. Liquid extraction pipe; 85. Filter screen; 86. Liquid discharge pipe. Detailed Implementation
[0015] Please see Figure 1-9 The present invention provides a technical solution: A prefabricated skid-mounted DTSAOA wastewater treatment equipment includes a base 1, a control box 2 and a tank section 3 mounted on the upper side of the base 1. The tank section 3 includes a tank box 31 fixed to the upper side of the base 1. An anaerobic A tank 32 with an upward opening is located on the left side of the tank box 31. A biological reactor OA tank 33 with an upward opening is located on the right side of the anaerobic A tank 32 and is located inside the tank box 31. A first PS tank 34 with an upward opening is located on the rear right side of the tank box 31, and a second PS tank 35 with an upward opening is located on the front right side of the tank box 31. A guide channel 36 is located inside the tank box 31 between the anaerobic A tank 32 and the biological reactor OA tank 33. An electrically controlled valve 37 is installed between the biological reactor OA tank 33 and the first PS tank 34 and the second PS tank 35. A control box 2 and a tank section 37 are installed on the upper left side of the base 1. The air supply section 4 includes a screw blower 41 fixed on the upper side of the base 1. A multi-port pipe 42 connected to the right side of the screw blower 41 is installed. An electrically controlled three-way valve 43 connected to the right side of the multi-port pipe 42 is installed. A large bubble mixer 5 is installed at the right end of the electrically controlled three-way valve 43. The large bubble mixer 5 includes an air supply pipe 51 fixedly connected to and communicating with the right end of the electrically controlled three-way valve 43. A pair of pipes at the front of the air supply pipe 51 are fixedly connected to the lower ends of a ventilation frame 52 connected to the front. Several air storage plates 53 are fixedly connected to the upper interfaces of the ventilation frame 52 connected to the front. A pulse controller 54 is installed on the rear pipe of the air supply pipe 51. An aeration section 6 is installed at the upper end of the electrically controlled three-way valve 43. Sludge mixing and circulation distributors 7 are installed at both the front and rear ends of the multi-port pipe 42.
[0016] The sludge mixing and circulating distributor 7 includes a conveying section 71 installed on the upper side of a multi-port pipe 42. The conveying section 71 includes a branch pipe 711 fixedly connected and communicating with the upper end of the multi-port pipe 42. A control valve 712 is installed on the straight section of the branch pipe 711, and a control valve 713 is installed on the bend of the branch pipe 711. An air-lifting section 72 is installed on the right side of the bend of the branch pipe 711. The air-lifting section 72 includes a supply pipe 721 fixedly connected and communicating with the bend of the branch pipe 711. An inner pipe 722 is fixedly connected to the front end of the supply pipe 721, and an outer pipe 723 is fixedly connected to the outside of the inner pipe 722. A distribution pipe 73 is fixedly connected to the upper left side of the outer pipe 723, and so on. The lower side of the outer pipe 723 is fixedly connected to a distribution pipe 73 in a communicating manner. A mixing section 75 is installed at the distribution pipe 73. Through this arrangement, the sludge mixing and circulation distributor 7 can realize the automatic circulation and distribution of sludge through the conveying section 71, the air lifting section 72, the distribution pipe 73, and the air lifting principle. The mixing section 75 includes several sludge collection covers 751 fixedly connected to the lower side of each lower pipe of the distribution pipe 73. Each hole of the sludge collection cover 751 is fixedly connected to a stirring nozzle 752. The outer side of the sludge collection cover 751 is fitted with an air supply ring 753 that communicates with the stirring nozzle 752. The upper side of each air supply ring 753 is fixedly connected to an air supply branch pipe 754 in a communicating manner. Each air supply branch pipe 754... A main air supply pipe 755 is fixedly connected to the upper side of 54 in a continuous manner, and the left end of the main air supply pipe 755 is fixedly connected to and communicates with the straight pipe of the branch pipe 711. This arrangement allows the mixing section 75 to mix the sludge and water in the first PS tank 34 or the second PS tank 35. The air lift section 72, transfer pipe 74 and mixing section 75 of the front sludge mixing and circulation distributor 7 are all located in the second PS tank 35, and the air lift section 72, transfer pipe 74 and mixing section 75 of the rear sludge mixing and circulation distributor 7 are all located in the first PS tank 34. The distribution pipes 73 are all fixed in the tank box 31. The pair of pipes on the left side of the distribution pipe 73 are respectively connected to the anaerobic A tank 32 and the biological reactor OA tank 33. The sludge mixing and circulation distributors 7 on the front and rear sides are connected, allowing them to be used for sludge suction, transfer, and mixing in the first PS tank 34 or the second PS tank 35, respectively. They can also return sludge to the anaerobic A tank 32 and the biological reactor OA tank 33 according to the process stage requirements, enabling independent operation and alternating control of the two PS tanks. The left aeration frame 52 is located in the anaerobic A tank 32, and the right aeration frame 52 is located in the biological reactor OA tank 33. The air storage plates 53 are located in both the anaerobic A tank 32 and the biological reactor OA tank 33. This configuration allows the large bubble mixer 5 to perform large bubble pulse mixing in the anaerobic A tank 32 and the biological reactor OA tank 33 without mechanical moving parts.The aeration section 6 includes an aeration pipe 61 fixed to and connected to the upper side of the electrically controlled three-way valve 43. Several interconnected aeration connectors 62 are fixedly connected to the lower side of the horizontal pipe of the aeration pipe 61. Tubular aerators 63 are installed on the lower side of each aeration connector 62 within the bioreactor OA tank 33. This arrangement allows the aeration section 6 to evenly distribute compressed air supplied by the screw blower 41 to each tubular aerator 63 via the aeration pipe 61 and aeration connectors 62, and release microbubbles into the bioreactor OA tank 33 to provide the dissolved oxygen environment required for aerobic nitrification. Furthermore, through the switching control of the electrically controlled three-way valve 43, it can interlock with the large bubble mixer 5, enabling convenient switching between aerobic aeration and anoxic mixing states in the bioreactor OA tank 33, thus achieving a dual-purpose tank and realizing dynamic spatiotemporal control of the DTSAOA system. A drainage section 8 is installed on the right side of the tank section 3. A base plate 81 is fixedly connected to the right side of the box 31. A liquid pump 82 is installed on the upper side of the base plate 81. An electrically controlled three-way valve 83 is installed on the left side of the liquid pump 82. Both ends of the electrically controlled three-way valve 83 are equipped with liquid extraction pipes 84 that are connected in a continuous manner. The rear liquid extraction pipe 84 is connected to the first PS tank 34, and the front liquid extraction pipe 84 is connected to the second PS tank 35. A filter screen 85 is fixedly connected to the lower side of the liquid extraction pipes 84. A drain pipe 86 is installed on the right side of the liquid pump 82. Through this arrangement, the drainage section (8) can selectively connect the liquid pump (82) to the first PS tank (34) or the second PS tank (35) by switching the position of the electrically controlled three-way valve 83. This allows for the extraction and discharge of the supernatant from the PS tank after sedimentation. The supernatant can be filtered through the filter screen (85) to intercept scum and suspended solids, ensuring the quality of the effluent and realizing alternating drainage and continuous effluent from the two tanks.
[0017] Workflow: The wastewater treatment operation of the prefabricated skid-mounted DTSAOA wastewater treatment equipment is as follows. Note: All electrical appliances used in this application are externally powered and centrally controlled via control box 2. Sludge circulation stage (S stage): Control box 2 controls the rear-side solenoid valve 37 to open, connecting the biological reactor OA tank 33 and the first PS tank 34, while simultaneously closing the front-side solenoid valve 37 to disconnect the connection between the biological reactor OA tank 33 and the second PS tank 35. At this time, wastewater flows sequentially through the anaerobic A tank 32, the guide channel 36, the biological reactor OA tank 33, and the rear-side solenoid valve 37, entering the first PS tank 34. Simultaneously, control box 2 starts the screw blower 41 and controls the solenoid three-way valve 43 to operate, causing the multi-way pipe 42 to mix with the large air bubbles. The air delivery pipe 51 of the combiner 5 is connected; the compressed air delivered by the screw blower 41 is delivered through the air delivery pipe 51, and after the pulse frequency is adjusted by the pulse controller 54, intermittent large bubbles are released to the bottom of the anaerobic A tank 32 and the biological reactor OA tank 33 through the ventilation frame 52 and the air storage plate 53 respectively; the bubbles burst during the rise, pushing the liquid in the tank to diffuse along the top and sink along the tank wall, forming a vertical circulation flow, realizing efficient mixing of sludge and water, and the whole process has no moving parts in the tank, effectively avoiding mechanical wear and failure risks, realizing zero in-tank maintenance, thus providing reliable hybrid power for the anoxic area; during this process, the control box 2 opens the control valve 713 of the rear sludge mixing and circulation distributor 7, so that the screw blower 41 passes through the multi-port pipe 4 Compressed air is supplied to the branch pipe 711 of the rear sludge mixing and circulation distributor 7. The compressed air enters the inner pipe 722 through the bend of the branch pipe 711 and the supply pipe 721 of the air lift section 72, and is discharged from the lower end of the inner pipe 722. The discharged gas forms an air lift effect in the outer pipe 723, which collects the sludge at the bottom of the first PS tank 34 through the sludge collection hoods 751 of the mixing section 75, and then lifts it to the distribution pipe 73 through the outer pipe 723. Subsequently, it is returned to the anaerobic A tank 32 and the biological reaction OA tank 33 respectively, realizing the sludge circulation and return. While the first PS tank 34 is performing the above sludge circulation stage, the second PS tank 35 is in the drainage stage. The control box 2 starts the liquid pump 82 of the drainage section 8 and controls the electric three-way valve 2 83 to operate, so that The front suction pipe 84 is connected to the liquid pump 82; the liquid pump 82 draws the clarified water in the second PS tank 35 through the front suction pipe 84, filters it through the filter screen 85, and discharges it through the drain pipe 86 for drainage operation; mud-water mixing stage (U stage): the first PS tank 34 continuously receives water, the control box 2 controls the rear sludge mixing circulation distributor 7 to close the control valve 2 713 and open the control valve 1 712, so that the compressed air delivered by the screw blower 41 is delivered to each stirring nozzle 752 through the straight pipe of the diversion pipe 711, the main air supply pipe 755, the air supply branch pipe 754 and the air supply ring 753; the stirring nozzle 752 forms a turbulent airflow in the sludge collection hood 751, which pre-stirs and fluidizes the deposited sludge, so as to achieve full mixing of mud and water in the first PS tank 34;Meanwhile, the large bubble mixer 5 continues to operate, maintaining the mixing state of the anaerobic A tank 32 and the biological reactor OA tank 33, while the second PS tank 35 continues its drainage phase; Sedimentation phase (V phase): Control box 2 controls the rear electric control valve 37 to close, stopping the water supply to the first PS tank 34, and simultaneously controls the rear sludge mixing and circulation distributor 7 to close its control valve 1 712 and control valve 2 713, stopping the air supply to the first PS tank 34, thereby terminating sludge return and tank mixing; the first PS tank 34 enters a static sedimentation state, where the sludge settles under gravity and forms a flocculent filter layer, promoting endogenous reaction. Nitrification reaction; during this process, control box 2 controls pulse controller 54 to adjust to low-frequency operation mode, so that large bubble mixer 5 releases intermittent large bubbles to anaerobic A tank 32 and biological reactor OA tank 33 at a low frequency, avoiding sludge settling in anaerobic A tank 32 and biological reactor OA tank 33; at this time, the second PS tank 35 has completed the drainage stage and is in the standby state after drainage is completed; drainage stage (A stage): at this time, control box 2 controls the front solenoid valve 37 to open, opening the water flow channel between biological reactor OA tank 33 and second PS tank 35, while keeping the rear solenoid valve 37 closed. In this state, the wastewater enters the second PS tank 35, where the sludge circulation stage S begins. After the first PS tank 34 completes sedimentation, the control box 2 activates the electrically controlled three-way valve 83, connecting the liquid pump 82 to the rear suction pipe 84. The liquid pump 82 then starts, and the supernatant in the first PS tank 34 is filtered through the filter screen 85 by the suction of the liquid pump 82, and then discharged sequentially through the rear suction pipe 84, the liquid pump 82, and the discharge pipe 86. During this period, the control box 2 adjusts the flow rate according to the stage characteristics of the process performed in the second PS tank 35, whether it is in the sludge circulation stage S or the sludge-water mixing stage. Whether it is stage U or sedimentation stage V, the pulse frequency of the pulse controller 54 is adjusted accordingly, so that the large bubble mixer 5 provides a hybrid power supply to the anaerobic A tank 32 and the biological reactor OA tank 33 that is adapted to the stage. After the first PS tank 34 has finished draining, the control box 2 shuts off the liquid pump 82, and the first PS tank 34 enters the standby state and waits for the next operating cycle. During the entire process of the first PS tank 34 performing the drainage stage A, the second PS tank 35 sequentially performs the complete process of sludge circulation S, sludge-water mixing U, and sedimentation V. In this way, the two tanks alternately cycle to achieve continuous treatment and compliant discharge of sewage.Aerobic Operation Mode: When the OA tank of the biological reactor 33 needs to be operated as an aerobic tank, the control box 2 controls the switching of the electrically controlled three-way valve 43, connecting the multi-way pipe 42 to the aeration section 6. Compressed air is supplied to the OA tank of the biological reactor 33 through the aeration pipe 61 and aeration connector 62 via the tubular aerator 63. At this time, the large bubble mixer 5 stops operating, realizing the aerobic nitrification reaction in the OA tank of the biological reactor 33. This enables the prefabricated skid-mounted DTSAOA wastewater treatment equipment to perform large bubble pulse mixing without mechanical moving parts in the anaerobic A tank 32 and the OA tank of the biological reactor 33. It can also perform automatic airlift circulation and distribution of sludge at the bottom of the PS tank, and can perform continuous wastewater treatment operations by alternating between the first PS tank 34 and the second PS tank 35. This solves the problems of high maintenance costs due to the use of mechanical stirring devices, high energy consumption and failure rate due to the configuration of a large number of decentralized core equipment, and long deployment cycle due to the civil engineering form of existing DTSAOA wastewater treatment equipment.
[0018] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.
Claims
1. A modular skid-mounted DTSAOA wastewater treatment equipment, comprising a base (1), characterized in that: A control box (2) and a pool section (3) are installed on the upper side of the base (1). The pool section (3) includes a pool box (31) fixed on the upper side of the base (1). An anaerobic A pool (32) with an upward opening is provided on the left side of the pool box (31). A biological reaction OA pool (33) with an upward opening is provided on the right side of the anaerobic A pool (32). A first PS pool (34) with an upward opening is provided on the rear right side of the pool box (31). A second PS pool (35) with an upward opening is provided on the front right side of the pool box (31). A guide channel (36) is provided between the anaerobic A pool (32) and the biological reaction OA pool (33) and is located inside the pool box (31). An electric control valve (37) is installed between the biological reaction OA pool (33) and the first PS pool (34) and the second PS pool (35). A gas supply section (4) is installed on the upper left side of the base (1). 4) Includes a screw blower (41) fixed to the upper side of the base (1), a multi-port pipe (42) connected to the right side of the screw blower (41), an electrically controlled three-way valve (43) connected to the right side of the multi-port pipe (42), a large bubble mixer (5) installed at the right end of the electrically controlled three-way valve (43), the large bubble mixer (5) including an air delivery pipe (51) fixedly connected to and communicating with the right end of the electrically controlled three-way valve (43), and so on. The lower ends of the two pipes on the front side of the air conveying pipe (51) are fixedly connected to a ventilation frame (52) arranged in a continuous manner. The upper interface of the ventilation frame (52) is fixedly connected to several air storage plates (53) arranged in a continuous manner. A pulse controller (54) is installed on the rear pipe of the air conveying pipe (51). An aeration section (6) is installed on the upper end of the electric three-way valve (43). Sludge mixing and circulation distributors (7) are installed at both the front and rear ends of the multi-way pipe (42).
2. The prefabricated skid-mounted DTSAOA wastewater treatment equipment according to claim 1, characterized in that: The sludge mixing and circulating distributor (7) includes a conveying section (71) installed on the upper side of a multi-port pipe (42). The conveying section (71) includes a branch pipe (711) fixedly connected and communicating with the upper end of the multi-port pipe (42). A control valve one (712) is installed on the straight pipe of the branch pipe (711), and a control valve two (713) is installed on the bend of the branch pipe (711). An air lift section (72) is installed on the right side of the bend of the branch pipe (711). The air lift section (72) includes a section... The supply pipe (721) is fixedly connected to the folded tube of the flow pipe (711). The front end of the supply pipe (721) is fixedly connected to the inner tube (722) which is in communication with the supply pipe (721). The outer tube (723) is fixedly connected to the outer side of the inner tube (722). The upper left side of the outer tube (723) is fixedly connected to the distribution pipe (73) which is in communication with the distribution pipe (73). The lower side of the outer tube (723) is fixedly connected to the distribution pipe (73) which is in communication with the distribution pipe (73). A mixing part (75) is installed at the distribution pipe (73).
3. The prefabricated skid-mounted DTSAOA wastewater treatment equipment according to claim 2, characterized in that: The mixing section (75) includes several mud collection covers (751) fixed to the lower side of each lower pipe of the distribution pipe (73) and connected to each other. Each hole of the mud collection cover (751) is fixedly connected to a stirring nozzle (752). The outer side of the mud collection cover (751) is fitted with an air supply ring (753) connected to the stirring nozzle (752). The upper side of the air supply ring (753) is fixedly connected to a gas supply branch pipe (754) arranged in a connected manner. The upper side of each gas supply branch pipe (754) is fixedly connected to a gas supply main pipe (755) arranged in a connected manner. The left end of the gas supply main pipe (755) is fixedly connected to and connected to the straight pipe of the diversion pipe (711).
4. The prefabricated skid-mounted DTSAOA wastewater treatment equipment according to claim 3, characterized in that: The air lift section (72), transfer pipe (74) and mixing section (75) of the sludge mixing and circulation distributor (7) on the front side are all located in the second PS tank (35). The air lift section (72), transfer pipe (74) and mixing section (75) of the sludge mixing and circulation distributor (7) on the rear side are all located in the first PS tank (34). The distribution pipes (73) are all fixed in the tank box (31). The pair of pipe openings on the left side of the distribution pipes (73) are connected to the anaerobic A tank (32) and the biological reaction OA tank (33) respectively.
5. The prefabricated skid-mounted DTSAOA wastewater treatment equipment according to claim 3, characterized in that: The ventilation frame (52) on the left is set in the anaerobic A tank (32), and the ventilation frame (52) on the right is set in the bioreactor OA tank (33). The gas storage plate (53) is set in both the anaerobic A tank (32) and the bioreactor OA tank (33).
6. The prefabricated skid-mounted DTSAOA wastewater treatment equipment according to claim 3, characterized in that: The aeration section (6) includes an aeration pipe (61) fixed on the upper side of the electrically controlled three-way valve (43) and connected thereto. Several aeration connectors (62) are fixedly connected to the lower side of the horizontal pipe of the aeration pipe (61). A tubular aerator (63) in the biological reactor OA tank (33) is installed on the lower side of each aeration connector (62).
7. The prefabricated skid-mounted DTSAOA wastewater treatment equipment according to claim 3, characterized in that: A drainage section (8) is installed on the right side of the pool section (3). A seat plate (81) is fixedly connected to the right side of the pool box (31). A liquid pump (82) is installed on the upper side of the seat plate (81). An electrically controlled three-way valve (83) is installed on the left side of the liquid pump (82). Both ends of the electrically controlled three-way valve (83) are equipped with liquid suction pipes (84) that are connected in a continuous manner. The rear liquid suction pipe (84) is connected to the first PS pool (34), and the front liquid suction pipe (84) is connected to the second PS pool (35). A filter screen (85) is fixedly connected to the lower side of the liquid suction pipe (84). A drain pipe (86) is installed on the right side of the liquid pump (82).