Combined sewage treatment reaction tank
By optimizing the structural design of the combined wastewater treatment reactor, including parallel and shared tanks, underwater mixers and aerators, the problems of large footprint and high energy consumption in existing technologies have been solved, achieving efficient and low-cost large-scale wastewater treatment.
Patent Information
- Application Number
- CN202520326641.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-02-27
AI Technical Summary
Existing wastewater treatment systems that separate anaerobic, anoxic, and aerobic processes require long pipelines and high energy consumption for nitrogen and phosphorus removal, occupy a large area, have high engineering costs, and are difficult to meet large-scale treatment needs. Independent systems require even more space.
Design a combined wastewater treatment reactor comprising two parallel tanks, each containing an anaerobic, first anoxic, second anoxic, and aerobic reaction zones, and sharing a mixing tank and an overflow tank. Equipped with an underwater mixer, propeller, and aerator, it enables sludge recirculation, optimizes the reaction zone layout, reduces oxygen concentration, minimizes land occupation, and lowers costs.
It achieves a compact structural design, reduces floor space and engineering costs, improves processing efficiency, and meets the needs of large-scale processing.
Smart Images
Figure CN223852406U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sewage treatment technical field especially is related to a combined sewage treatment reaction tank. BACKGROUND
[0002] Anaerobic anoxic aerobic activated sludge method is a kind of activated sludge method sewage treatment method for removing organic pollutants and nitrogen, phosphorus etc. in water by the various combinations of anaerobic zone, anoxic zone and aerobic zone and different reflux modes, and it is a relatively mature and widely used sewage treatment process.
[0003] In prior art, commonly used anaerobic-anoxic-aerobic zone is divided into three sections, but the combined tank body of the structure needs longer conveying pipeline and larger energy consumption for internal circulation between each section when denitrifying and dephosphorizing, and the overall land area is larger, and engineering cost is higher.And when sewage treatment capacity is larger, a set of sewage treatment system can not meet the processing demand, therefore, large-scale sewage treatment site needs to construct multiple sets of sewage treatment systems, and these sewage treatment systems are relatively independent, further expand the demand for land area, and increase engineering cost. UTILITARY MODEL CONTENTS
[0004] The utility model aims at providing a combined sewage treatment reaction tank to solve the problems in prior art.
[0005] The utility model discloses a combined sewage treatment reaction tank, including two side by side arrangement's tank body, and the tank body is divided into anaerobic reaction zone, first anoxic reaction zone, second anoxic reaction zone and aerobic reaction zone in turn along water flow direction, and the mixed pool and overflow pool are clamped between two tank bodies, and the mixed pool both sides are connected with two anaerobic reaction zones respectively, and the mixed pool both ends are connected with inlet water pipeline and inlet sludge pipeline respectively, and first anoxic reaction zone is connected with inlet water pipeline, and the rear side of aerobic reaction zone is equipped with outlet water overflow chute, and outlet water overflow chute is connected with overflow pool, and overflow pool is connected with outlet water pipeline.
[0006] The combined sewage treatment reaction tank of the utility model includes two sets of relatively independent sewage treatment systems, and mixed pool and overflow pool are shared by each other, compact structure design has the advantages such as small land area, low engineering cost.
[0007] As the further improvement of the utility model, underwater agitator is equipped in anaerobic reaction zone, underwater propeller is equipped in first anoxic reaction zone and second anoxic reaction zone, and aerator is equipped in aerobic reaction zone, aerator is connected with aeration pipeline, aeration pipeline is connected with air blower, guarantee sewage treatment effect.
[0008] As a further improvement of the present application, a reflux channel and a reflux pump are arranged between the bottom of the rear end of the aerobic reaction zone and the second anoxic reaction zone, so that part of the sludge in the aerobic reaction zone is refluxed to the second anoxic reaction zone, thereby increasing the amount of microorganisms in the second anoxic reaction zone and improving the reaction effect.
[0009] As a further improvement of the present application, the aerator comprises a first aerator arranged at the front side of the aerobic reaction zone and a second aerator arranged at the rear side of the aerobic reaction zone, and the number of aeration holes of the second aerator is less than that of the first aerator, so that the oxygen content at the rear side of the aerobic reaction zone is reduced, i.e. the dissolved oxygen concentration of the sludge refluxed to the second anoxic reaction zone is reduced, thereby ensuring the anoxic reaction effect.
[0010] As a further improvement of the present application, the height of the bottom of the overflow pool from the ground is 2m, which does not affect the arrangement of the sludge inlet pipeline at the bottom, saves space and simplifies the connection.
[0011] As a further improvement of the present application, the anaerobic reaction zone and the first anoxic reaction zone are arranged side by side, and the first anoxic reaction zone, the second anoxic reaction zone and the aerobic reaction zone are arranged in parallel, so that the structure is compact, the space is saved to the maximum, and the serpentine flow of the sewage between the reaction zones is facilitated, the reaction time is prolonged and the reaction effect is improved. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a structural schematic view of the combined sewage treatment reaction pool of the present application.
[0013] Figure 2 It is a Figure 1 view of A-A.
[0014] Figure 3 It is a Figure 1 view of B-B.
[0015] Among them, 1 is an anaerobic reaction zone, 2 is a first anoxic reaction zone, 3 is a second anoxic reaction zone, 4 is an aerobic reaction zone, 5 is a mixing pool, 6 is an overflow pool, 7 is a water inlet pipeline, 8 is a sludge inlet pipeline, 9 is a water outlet pipeline, 10 is an underwater agitator, 11 is an underwater propeller, 12 is a first aerator, 13 is a second aerator, 14 is an aeration pipeline, and 15 is a reflux pump. DETAILED DESCRIPTION
[0016] As Figures 1-3The combined sewage treatment reaction tank shown comprises two tank bodies arranged side by side, the tank bodies are sequentially divided into an anaerobic reaction zone 1, a first anoxic reaction zone 2, a second anoxic reaction zone 3 and an aerobic reaction zone 4 along the water flow direction, a mixing tank 5 and an overflow tank 6 are arranged between the two tank bodies, the mixing tank 5 is connected with the two anaerobic reaction zones 1 at two sides respectively, the mixing tank 5 is connected with a water inlet pipeline 7 and a sludge inlet pipeline 8 at two ends respectively, the first anoxic reaction zone 2 is connected with the water inlet pipeline 7, a water outlet overflow tank is arranged at the rear side of the aerobic reaction zone 4, the water outlet overflow tank is connected with the overflow tank 6, and the overflow tank 6 is connected with a water outlet pipeline 9. The bottom of the overflow tank 6 is 2m away from the ground, which does not affect the arrangement of the sludge inlet pipeline 8 at the bottom, saves space and simplifies the connection.
[0017] The anaerobic reaction zone 1 and the first anoxic reaction zone 2 are arranged side by side, the first anoxic reaction zone 2, the second anoxic reaction zone 3 and the aerobic reaction zone 4 are arranged side by side, the structure is compact, the space is saved to the maximum, and the sewage can form a serpentine flow between the reaction zones, the reaction time is prolonged, and the reaction effect is improved. The underwater agitator 10 is arranged in the anaerobic reaction zone 1, the underwater propeller 11 is arranged in the first anoxic reaction zone 2 and the second anoxic reaction zone 3, and the aerator is arranged at the bottom of the aerobic reaction zone 4, the aerator is connected with the aeration pipeline 14, the aeration pipeline 14 is connected with the air blower, and the sewage treatment effect is ensured.
[0018] The back end of the aerobic reaction zone 4 and the second anoxic reaction zone 3 are provided with a reflux channel and a reflux pump 15, so that part of the sludge in the aerobic reaction zone 4 is refluxed to the second anoxic reaction zone 3, the amount of microorganisms in the second anoxic reaction zone 3 is increased, and the reaction effect is improved.
[0019] Specifically, the aerator comprises a first aerator 12 arranged at the front side of the aerobic reaction zone 4 and a second aerator 13 arranged at the rear side of the aerobic reaction zone 4, the number of aeration holes of the second aerator 13 is less than that of the first aerator 12, so that the oxygen content at the rear side of the aerobic reaction zone 4 is reduced, that is, the dissolved oxygen concentration of the sludge refluxed to the second anoxic reaction zone 3 is reduced, and the anoxic reaction effect is ensured.
[0020] The combined sewage treatment reaction tank of the embodiment comprises two groups of relatively independent sewage treatment systems, and the two groups of sewage treatment systems share the mixing tank 5 and the overflow tank 6, the structure is compact, the occupied area is small, and the engineering cost is low.
[0021] The utility model is not limited to the above embodiment, on the basis of the technical scheme disclosed in the utility model, the skilled in the art can make some substitutions and deformations to some technical features without creative labor according to the disclosed technical content, and the substitutions and deformations are all within the protection scope of the utility model.
Claims
1. A combined sewage treatment reactor comprising two side-by-side tanks, characterised in that: The pool body is sequentially divided into an anaerobic reaction zone, a first anoxic reaction zone, a second anoxic reaction zone and an aerobic reaction zone along the water flow direction, a mixing pool and an overflow pool are arranged between the two pool bodies, the mixing pool is connected with the two anaerobic reaction zones on the two sides respectively, the mixing pool is connected with the water inlet pipeline and the sludge inlet pipeline on the two ends respectively, the aerobic reaction zone is provided with a water outlet overflow tank on the rear side, the water outlet overflow tank is connected with the overflow pool, and the overflow pool is connected with the water outlet pipeline.
2. The modular wastewater treatment reaction cell of claim 1, wherein: The underwater agitator is arranged in the anaerobic reaction zone, the underwater propeller is arranged in the first anoxic reaction zone and the second anoxic reaction zone, and the aerator is arranged in the aerobic reaction zone, the aerator is connected with the aeration pipeline, and the aeration pipeline is connected with the air blower.
3. The modular wastewater treatment reaction cell of claim 1, wherein: A reflux channel and a reflux pump are arranged between the rear end bottom of the aerobic reaction zone and the second anoxic reaction zone.
4. The modular wastewater treatment reaction cell of claim 2, wherein: The aerator comprises a first aerator arranged on the front side of the aerobic reaction zone and a second aerator arranged on the rear side of the aerobic reaction zone, and the number of aeration holes of the second aerator is less than that of the first aerator.
5. The modular wastewater treatment reactor of any one of claims 1-4, wherein: The bottom of the overflow pool is 2m away from the ground.
6. The modular wastewater treatment reactor of any one of claims 1-4, wherein: The anaerobic reaction zone and the first anoxic reaction zone are arranged side by side, and the first anoxic reaction zone, the second anoxic reaction zone and the aerobic reaction zone are arranged side by side.