Efficient anaerobic reaction system for sewage treatment
The wastewater treatment system addresses temperature-induced efficiency drops by using a heat exchanger and dual filtration to cool and stabilize microbial populations, enhancing efficiency and reducing costs.
Patent Information
- Application Number
- CN202421927099.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-09
AI Technical Summary
The efficiency of existing sewage treatment devices decreases when the temperature rises in summer, and anaerobic microorganisms are prone to enter the aerobic tank, resulting in unstable flora and increasing costs.
The anaerobic microorganisms are cooled by using a heat exchange plate, and the attachment microorganisms are screened through the settings of primary and secondary filters to improve filtration efficiency and bacterial stability.
It improves sewage treatment efficiency, reduces production costs, and maintains the stability of anaerobic microorganisms.
Smart Images
Figure CN223102834U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewage treatment, in particular to a high-efficiency anaerobic reaction system for sewage treatment. Background Technique
[0002] The VC production wastewater mainly comes from the technological links such as fermentation, extraction, conversion and refining. The high-concentration wastewater includes fermentation mycelium, extraction mother liquor, conversion mother liquor, refining mother liquor, alcohol evaporation residue, etc. Moreover, the overall wastewater is acidic, with a high COD concentration, large changes in water quality and quantity, and intermittent discharge of high-concentration wastewater. Anaerobic biological method is a process in which organic matter in wastewater is decomposed into methane and carbon dioxide through the action of anaerobic microorganisms under the condition of no molecular oxygen. This method is applicable to the treatment of high-concentration organic wastewater in VC production.
[0003] In the actual treatment process, anaerobic microorganisms are greatly affected by temperature. Especially in summer, during the anaerobic digestion process, a large amount of heat is generated due to microbial metabolism, which will cause the sludge temperature to rise. If the temperature exceeds the optimal temperature range for microbial activities (usually 30-40°C for mesophilic anaerobic digestion), cooling measures need to be taken to maintain the digestion efficiency. Existing devices mostly adopt step-by-step anaerobic treatment and speed up the sewage flow rate to solve the problem. This not only causes the cost to rise, but also leads to a decline in treatment efficiency; moreover, too fast a flow rate will bring a large number of anaerobic microorganisms into the aerobic tank, resulting in unstable microbial communities. Content of the Utility Model
[0004] According to the deficiencies in the above prior art, the purpose of the utility model is to provide a high-efficiency anaerobic reaction system for sewage treatment. Through the setting of a heat exchange plate, when the temperature of anaerobic microorganisms is relatively high, the untreated sewage is introduced into the heat exchange plate to cool the anaerobic microorganisms, greatly improving the sewage treatment efficiency and reducing the production cost; through the setting of a secondary filter, the anaerobic microorganisms attached to the sewage are screened out, greatly improving the stability of aerobic microbial communities.
[0005] The utility model is realized by adopting the following technical solutions:
[0006] The high-efficiency anaerobic reaction system for sewage treatment includes a sewage tank. The sewage tank is connected to an anaerobic tank through a primary filter. The anaerobic tank is connected to an aerobic tank through a secondary filter. A heat exchange plate is arranged at the bottom of the anaerobic tank. The primary filter is connected to the heat exchange plate through an inlet heat exchange plate pipeline.
[0007] A stirring paddle is arranged inside the sewage tank. A primary filter plate is arranged inside the primary filter. The connection between the sewage tank and the primary filter is located below the primary filter plate.
[0008] On the vertical wall of the first-stage filter, there is a water outlet of the first-stage filter, and the water outlet of the first-stage filter is located above the filter plate of the first-stage filter.
[0009] On the anaerobic tank, there is an inlet of the anaerobic tank, and inside the anaerobic tank, there is a hemispherical disperser, and the hemispherical disperser is located directly below the inlet of the anaerobic tank.
[0010] The sewage passing through the inlet of the anaerobic tank falls by gravity onto the hemispherical disperser and enters the anaerobic tank after being dispersed. Anaerobic microorganisms mostly exist in the sludge at the bottom of the anaerobic tank.
[0011] The water outlet of the first-stage filter is directly connected to the inlet of the anaerobic tank through a pipeline passing through the anaerobic tank.
[0012] The water outlet of the first-stage filter is connected to the heat exchange plate through a pipeline for entering the heat exchange plate, and the heat exchange plate is connected to the inlet of the anaerobic tank through a pipeline for exiting the heat exchange plate.
[0013] Inside the second-stage filter, there is a filter plate of the second-stage filter, and on the vertical wall of the second-stage filter, there is an impurity discharge outlet of the second-stage filter.
[0014] The connection between the anaerobic tank and the second-stage filter is located below the filter plate of the second-stage filter, and the connection between the aerobic tank and the second-stage filter is located above the filter plate of the second-stage filter. The impurity discharge outlet of the second-stage filter is located below the filter plate of the second-stage filter.
[0015] Inside the aerobic tank, there is an aeration plate, and a blower is connected to the aeration plate.
[0016] Both the first-stage filter and the second-stage filter adopt the "under-in and up-out" filtering method, reasonably utilizing the factor that impurities are affected by gravity, and greatly improving the filtering efficiency. The impurities filtered out by the second-stage filter flow back into the anaerobic tank.
[0017] The working principle of the present utility model is as follows:
[0018] The sewage in the sewage tank, after being filtered by the first-stage filter, falls by gravity onto the hemispherical disperser through the inlet of the anaerobic tank and enters the anaerobic tank after being dispersed. The sewage after being treated by the anaerobic tank enters the second-stage filter for filtering, and after filtering, it enters the aerobic tank; when the temperature of the anaerobic microorganisms in the anaerobic tank is too high, the sewage in the first-stage filter enters the heat exchange plate through the pipeline for entering the heat exchange plate to cool the anaerobic microorganisms, and then enters the anaerobic tank through the pipeline for exiting the heat exchange plate. Among them, both the first-stage filter and the second-stage filter adopt the "under-in and up-out" filtering method, reasonably utilizing the factor that impurities are affected by gravity, and greatly improving the filtering efficiency. The impurities filtered out by the second-stage filter flow back into the anaerobic tank.
[0019] Compared with the prior art, the beneficial effects of the present utility model are:
[0020] By adopting the high-efficiency anaerobic reaction system for sewage treatment of the present utility model, through the arrangement of the heat exchange plate, when the temperature of anaerobic microorganisms is relatively high, the untreated sewage is introduced into the heat exchange plate to cool the anaerobic microorganisms, greatly improving the sewage treatment efficiency and reducing the production cost; through the arrangement of the secondary filter, the anaerobic microorganisms attached to the sewage are screened out, greatly improving the stability of aerobic flora. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic structural diagram of the high-efficiency anaerobic reaction system for sewage treatment of the present utility model;
[0022] Figure 2 It is a schematic structural diagram of the heat exchange plate of the present utility model;
[0023] In the figure: 1, sewage tank; 2, primary filter; 3, anaerobic tank; 4, secondary filter; 5, aerobic tank; 6, primary filter plate; 7, hemispherical disperser; 8, anaerobic tank water inlet; 9, heat exchange plate; 10, secondary filter plate; 11, aeration plate; 12, blower; 13, primary filter water outlet; 14, direct inlet pipe of anaerobic tank; 15, pipe into heat exchange plate; 16, pipe out of heat exchange plate; 17, impurity discharge port of secondary filter. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] In order to make the purpose and technical solution of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0025] Embodiment 1
[0026] As Figure 1 shown, the high-efficiency anaerobic reaction system for sewage treatment includes a sewage tank 1. The sewage tank 1 is connected to an anaerobic tank 3 through a primary filter 2. The anaerobic tank 3 is connected to an aerobic tank 5 through a secondary filter 4. A heat exchange plate 9 is provided at the bottom of the anaerobic tank 3. The primary filter 2 is connected to the heat exchange plate 9 through a pipe 15 into the heat exchange plate. As Figure 2As shown in the figure, a stirring paddle is provided inside the sewage tank 1, and a primary filter plate 6 is provided inside the primary filter 2. The connection between the sewage tank 1 and the primary filter 2 is located below the primary filter plate 6. A primary filter water outlet 13 is provided on the vertical wall of the primary filter 2, and the primary filter water outlet 13 is located above the primary filter plate 6. An anaerobic tank water inlet 8 is provided on the anaerobic tank 3, and a hemispherical disperser 7 is provided inside the anaerobic tank 3. The hemispherical disperser 7 is located directly below the anaerobic tank water inlet 8. The sewage passing through the anaerobic tank water inlet 8 falls by gravity onto the hemispherical disperser 7 and enters the anaerobic tank after being dispersed. Anaerobic microorganisms mostly exist in the bottom sludge of the anaerobic tank 3. The primary filter water outlet 13 is directly connected to the anaerobic tank water inlet 8 through the pipeline 14. The primary filter water outlet 13 is connected to the heat exchange plate 9 through the inlet heat exchange plate pipeline 15, and the heat exchange plate 9 is connected to the anaerobic tank water inlet 8 through the outlet heat exchange plate pipeline 16. A secondary filter plate 10 is provided inside the secondary filter 4, and a secondary filter impurity discharge port 17 is provided on the vertical wall of the secondary filter 4. The connection between the anaerobic tank 3 and the secondary filter 4 is located below the secondary filter plate 10, and the connection between the aerobic tank 5 and the secondary filter 4 is located above the secondary filter plate 10. The secondary filter impurity discharge port 17 is located below the secondary filter plate 10. An aeration plate 11 is provided inside the aerobic tank 5, and a blower 12 is connected to the aeration plate 11.
[0027] For the above-mentioned high-efficiency anaerobic reaction system for sewage treatment, during operation, it includes the following steps:
[0028] (1) The sewage in the sewage tank 1 is filtered by the primary filter 2, and then falls by gravity onto the hemispherical disperser 7 through the anaerobic tank water inlet 8. After being dispersed, it enters the anaerobic tank 3. The sewage treated by the anaerobic tank 3 enters the secondary filter 4 for filtration, and after filtration, it enters the aerobic tank 5; (2) When the temperature of the anaerobic microorganisms in the anaerobic tank 3 is too high, the sewage in the primary filter 2 enters the heat exchange plate 9 through the inlet heat exchange plate pipeline 15 to cool down the anaerobic microorganisms, and then enters the anaerobic tank through the outlet heat exchange plate pipeline 16.
Claims
1. An efficient anaerobic reaction system for sewage treatment, characterized in that, It includes a sewage tank (1), the sewage tank (1) is connected to an anaerobic tank (3) through a primary filter (2), the anaerobic tank (3) is connected to an aerobic tank (5) through a secondary filter (4), a heat exchange plate (9) is provided at the bottom of the anaerobic tank (3), and the primary filter (2) is connected to the heat exchange plate (9) through a heat exchange plate inlet pipe (15).
2. The highly efficient anaerobic reaction system for sewage treatment according to claim 1, characterized in that, A stirring paddle is provided inside the sewage tank (1), a primary filter plate (6) is provided inside the primary filter (2), and the connection between the sewage tank (1) and the primary filter (2) is located below the primary filter plate (6).
3. The highly efficient anaerobic reaction system for sewage treatment according to claim 2, wherein A primary filter outlet (13) is provided on the vertical wall of the primary filter (2), and the primary filter outlet (13) is located above the primary filter plate (6).
4. The highly efficient anaerobic reaction system for sewage treatment according to claim 3, wherein An anaerobic tank inlet (8) is provided on the anaerobic tank (3), a hemispherical disperser (7) is provided inside the anaerobic tank (3), and the hemispherical disperser (7) is located directly below the anaerobic tank inlet (8).
5. The highly efficient anaerobic reaction system for sewage treatment according to claim 4, wherein The primary filter outlet (13) is connected to the anaerobic tank inlet (8) through a direct anaerobic tank inlet pipe (14).
6. The highly efficient anaerobic reaction system for sewage treatment according to claim 4, wherein The primary filter outlet (13) is connected to the heat exchange plate (9) through a heat exchange plate inlet pipe (15), and the heat exchange plate (9) is connected to the anaerobic tank inlet (8) through a heat exchange plate outlet pipe (16).
7. The highly efficient anaerobic reaction system for sewage treatment according to claim 1, characterized in that A secondary filter plate (10) is provided inside the secondary filter (4), and a secondary filter impurity discharge port (17) is provided on the vertical wall of the secondary filter (4).
8. The highly efficient anaerobic reaction system for sewage treatment according to claim 7, wherein The connection between the anaerobic tank (3) and the secondary filter (4) is located below the secondary filter plate (10), the connection between the aerobic tank (5) and the secondary filter (4) is located above the secondary filter plate (10), and the secondary filter impurity discharge port (17) is located below the secondary filter plate (10).
9. The highly efficient anaerobic reaction system for sewage treatment according to claim 1, wherein An aeration plate (11) is provided inside the aerobic tank (5), and a blower (12) is connected to the aeration plate (11).