Container type sewage treatment integrated equipment capable of being rapidly installed
By setting up sedimentation tanks, anaerobic tanks, aerobic tanks, and biofilm treatment tanks inside the container, and combining them with circulating pumps and aeration components, a complex microbial treatment process is constructed, which solves the problem of unsatisfactory effects of existing container wastewater treatment equipment and achieves highly efficient wastewater treatment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGXI SHENZHOU ENVIRONMENTAL PROTECTION IND HOLDING GROUP CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-05-15
AI Technical Summary
Existing containerized sewage treatment equipment has defects in its sewage treatment process, resulting in unsatisfactory treatment effects.
The container adopts a rectangular box design inside the container, which includes sedimentation tank, anaerobic tank, aerobic tank and biofilm treatment tank. It constructs a complex sewage treatment process through circulation pumps and aeration components, combined with microbial treatment technology, including anaerobic microorganisms, aerobic microorganisms and biofilm treatment, to achieve efficient sewage treatment by utilizing the metabolic processes of microorganisms.
It significantly improves wastewater treatment efficiency, enhances wastewater biodegradability, nitrogen and phosphorus removal capabilities, strengthens the resistance of microorganisms to shock loads, reduces operating costs, and ensures clear effluent quality.
Smart Images
Figure CN224242910U_ABST
Abstract
Description
Technical Field
[0001] This utility model specifically relates to the field of wastewater treatment technology, and more specifically to a containerized integrated wastewater treatment equipment that can be installed quickly. Background Technology
[0002] Containerized wastewater treatment refers to the equipment and technology used to treat wastewater inside a shipping container. Due to the mobility and modularity of shipping containers, wastewater treatment equipment can be easily integrated into the container, enabling mobile, rapid, and flexible wastewater treatment.
[0003] Chinese Patent Publication No. CN222082622U discloses a containerized wastewater treatment device, belonging to the field of containerized wastewater treatment technology. This containerized wastewater treatment device includes a container body, the interior of which is provided with a sedimentation chamber, a filtration chamber, and a neutralization chamber, which are separated by partitions. The automatic dosing mechanism includes a dosing box, a moving trough, a dosing plate, and a spring, with the dosing box fixedly installed on the top of the container body.
[0004] The container sewage treatment device in the aforementioned patent is just a simple filtration and dosing process, which has many defects in the sewage treatment process, resulting in unsatisfactory sewage treatment effect. Utility Model Content
[0005] The purpose of this invention is to provide a containerized integrated wastewater treatment equipment that can be quickly installed, which has anaerobic treatment, aerobic treatment and biofilm treatment, effectively improving the wastewater treatment effect; and to solve the technical problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] The containerized integrated wastewater treatment equipment can be installed quickly. It includes a container with a rectangular box inside. The rectangular box has multiple partitions that divide the rectangular box into sedimentation tanks, anaerobic tanks, aerobic tanks and biofilm treatment tanks.
[0008] The container is also equipped with a control cabinet, and a dosing tank is fixed on one side of the control cabinet. A metering pump is installed above the dosing tank, and the outlet of the metering pump is connected to a dosing pipe, which extends into the biofilm treatment tank.
[0009] As a further technical solution of this utility model, a first circulation pump is provided on the outside of the sedimentation tank. The outlet end of the first circulation pump is connected to the upper end of the anaerobic tank through a pipe, and the inlet end of the first circulation pump is connected to the lower end of the sedimentation tank through a pipe.
[0010] As a further technical solution of this utility model, a second circulation pump is provided on the outside of the anaerobic tank. The inlet of the second circulation pump is connected to the aerobic tank through a pipe, and the outlet is connected to the anaerobic tank through a pipe.
[0011] As a further technical solution of this utility model, a third circulation pump is provided on the outside of the biofilm treatment tank. The inlet of the third circulation pump is connected to the biofilm treatment tank through a pipe, and the outlet is connected to the anaerobic tank through a pipe.
[0012] As a further technical solution of this utility model, the biofilm treatment tank is provided with a biofilm hanger inside, and an aeration component is provided below the biofilm hanger; the aeration component is connected to an air compression tank through an aeration pipe; the air compression tank is connected to an air compressor through a pipeline.
[0013] As a further technical solution of this utility model, the biofilm hanger is a rectangular frame composed of multiple hollow tubes, and multiple filaments that facilitate the attachment of microorganisms are hung inside the rectangular frame.
[0014] The hollow tube on the biofilm attachment is connected to a water pumping pipe; the water pumping pipe is connected to a filter; the filter is connected to the inlet of the liquid pump, and the outlet of the liquid pump is connected to a drain pipe; the drain pipe extends to the outer end of the container.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. In this utility model, the anaerobic tank utilizes anaerobic microorganisms (such as acid-producing bacteria and methanogenic bacteria) to decompose large molecular organic matter (such as cellulose and fat) into small molecular fatty acids (VFAs), thereby improving the biodegradability of wastewater; polyphosphate-accumulating bacteria release intracellular phosphorus (dissolved in water in the form of phosphate) under anaerobic conditions, while simultaneously absorbing organic matter from the wastewater and storing it in their bodies to reserve energy for subsequent aerobic phosphorus uptake;
[0017] 2. In this utility model, the biofilm treatment tank is formed by microorganisms attaching to the surface of the packing material (such as combined packing material, ceramsite, activated carbon) to form a biofilm, which can enrich high concentrations of microorganisms (especially nitrifying and denitrifying bacteria with long generation cycles) and has strong resistance to shock loads; microorganisms attaching to the surface of the packing material (such as combined packing material, ceramsite, activated carbon) to form a biofilm can enrich high concentrations of microorganisms (especially nitrifying and denitrifying bacteria with long generation cycles) and has strong resistance to shock loads;
[0018] 3. In this invention, microorganisms (such as methanogens) in the anaerobic tank are the core of organic matter degradation. By returning the sludge settled in the sedimentation tank to the anaerobic tank, the lost amount of microorganisms can be replenished, maintaining a high sludge concentration (such as MLSS, mixed liquor suspended solids concentration) in the anaerobic tank, and ensuring the efficient progress of the anaerobic reaction. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0020] Figure 2 This utility model Figure 1 A schematic diagram of the internal structure.
[0021] Figure 3 This utility model Figure 1 Another perspective illustration.
[0022] Figure 4 This utility model Figure 3 The main view.
[0023] Figure 5 This utility model Figure 4 AA sectional view.
[0024] Figure 6 This utility model Figure 4 BB cross-sectional view.
[0025] Figure 7 This utility model Figure 4 CC section view.
[0026] In the diagram: 1-Container, 2-Sedimentation tank, 3-Anaerobic tank, 4-Agitator, 5-Aerobic tank, 6-Biofilm treatment tank, 7-Biofilm attachment, 8-Aeration assembly, 9-Pump, 10-Filter, 11-Liquid pump, 12-Drain pipe, 13-Dosing tank, 14-Quantitative pump, 15-Dosing pipe, 16-Aeration pipe, 17-Air compressor tank, 18-Air compressor, 19-First circulation pump, 20-Second circulation pump, 21-Third circulation pump, 22-Control cabinet. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] Please see Figure 1-7 In this embodiment of the utility model, the containerized integrated sewage treatment equipment that can be installed quickly includes a container 1. Inside the container 1 is a rectangular box, and inside the rectangular box are multiple partitions that divide the rectangular box into a sedimentation tank 2, an anaerobic tank 3, an aerobic tank 5, and a biofilm treatment tank 6.
[0029] By adopting the above technical solution, sedimentation tank 2 removes suspended solids (SS), colloidal particles and some organic matter from wastewater through gravity sedimentation, thereby reducing the load on subsequent biological treatment.
[0030] Anaerobic tank 3 utilizes anaerobic microorganisms (such as acid-producing bacteria and methanogenic bacteria) to decompose large organic molecules (such as cellulose and fat) into small fatty acids (VFAs), thereby improving the biodegradability of wastewater. Polyphosphate-accumulating bacteria release intracellular phosphorus (dissolved in water in the form of phosphate) under anaerobic conditions, while simultaneously taking up organic matter in the wastewater and storing it in their bodies to reserve energy for subsequent aerobic phosphorus uptake.
[0031] Aerobic tank 5 uses dissolved oxygen (DO = 2-4 mg / L) to decompose small molecule organic matter (such as VFAs) in wastewater into CO2 and H2O, significantly reducing COD / BOD.
[0032] The biofilm treatment tank 6 is formed by microorganisms attaching to the surface of the packing material (such as combined packing material, ceramsite, activated carbon) to form a biofilm, which can enrich high concentrations of microorganisms (especially nitrifying and denitrifying bacteria with long generation cycles) and has strong resistance to shock loads.
[0033] In this embodiment, a first circulation pump 19 is provided on the outside of the sedimentation tank 2. The outlet end of the first circulation pump 19 is connected to the upper end of the anaerobic tank 3 through a pipe, and the inlet end of the first circulation pump 19 is connected to the lower end of the sedimentation tank 2 through a pipe.
[0034] By adopting the above technical solution, microorganisms (such as methanogens) in the anaerobic tank are the core of organic matter degradation. By returning the sludge settled in the sedimentation tank to the anaerobic tank, the lost amount of microorganisms can be replenished, maintaining a high sludge concentration (such as MLSS, mixed liquor suspended solids concentration) in the anaerobic tank, and ensuring the efficient progress of the anaerobic reaction.
[0035] Returning sludge allows for a longer contact time between microorganisms in the anaerobic tank and organic matter in the wastewater. This is especially beneficial for recalcitrant macromolecular organic matter (such as cellulose and fats). The longer retention time helps microorganisms break them down into smaller molecules (such as volatile fatty acids, VFAs) through processes like fermentation and hydrolysis, thus reducing the load on subsequent aerobic treatment.
[0036] By recirculating sludge, the anaerobic pond can improve the removal efficiency of pollutants such as COD (chemical oxygen demand) and BOD (biochemical oxygen demand), especially when treating high-concentration organic wastewater (such as food processing wastewater and aquaculture wastewater).
[0037] If anaerobic sludge is not returned in a timely manner, excessive gas production (such as methane and carbon dioxide) may cause the sludge to float, affecting the solid-liquid separation effect in the sedimentation tank. Returning the sludge reduces the gas production rate of the anaerobic sludge, minimizes abnormal sludge floating in the sedimentation tank, and ensures clear effluent.
[0038] In this embodiment, a second circulation pump 20 is provided on the outside of the anaerobic tank 3. The inlet of the second circulation pump 20 is connected to the aerobic tank 5 through a pipe, and the outlet is connected to the anaerobic tank 3 through a pipe.
[0039] The operation of reverse-transferring the wastewater (mixed liquor) from the aerobic tank to the anaerobic tank by adopting the above technical solution is usually called nitrification liquor recirculation. Its core purpose is to achieve functions such as nitrogen and phosphorus removal by recycling pollutants and microbial metabolites.
[0040] In an aerobic environment, ammonia nitrogen (NH3-N) is oxidized to nitrite (NO2) by nitrifying bacteria. - ) and nitrates (NO3) - The wastewater undergoes nitrification, during which a large amount of nitrate nitrogen (NO3) accumulates. - -N); The mixed liquor containing nitrate nitrogen from the aerobic tank is returned to an anoxic or anaerobic environment. Denitrifying bacteria use organic matter in the wastewater as electron donors to reduce nitrate nitrogen to nitrogen gas (N2) and release it into the air, thus achieving denitrification. The organic matter in the raw water of the anaerobic tank (such as carbohydrates and fats in the wastewater) provides a carbon source for denitrification, avoiding the need for additional carbon sources (such as methanol) and reducing costs.
[0041] In this embodiment, a third circulation pump 21 is provided on the outside of the biofilm treatment tank 6. The inlet of the third circulation pump 21 is connected to the biofilm treatment tank 6 through a pipe, and the outlet is connected to the anaerobic tank 3 through a pipe.
[0042] By adopting the above technical solution, the wastewater from the biofilm treatment tank is returned to the anaerobic tank to enhance the denitrification and carbon removal efficiency, microbial synergy, and water quality balance of the sewage treatment system.
[0043] Wastewater from the membrane tank containing nitrate nitrogen and residual organic matter is recycled to the anaerobic tank. Denitrifying bacteria can use the carbon sources (such as short-chain fatty acids and sugars) as electron donors to reduce nitrate nitrogen to nitrogen gas (N2), thus achieving denitrification.
[0044] In this embodiment, the biofilm treatment tank 6 is provided with a biofilm hanger 7 inside, and an aeration assembly 8 is provided below the biofilm hanger 7; the aeration assembly 8 is connected to an air compression tank 17 through an aeration pipe 16; the air compression tank 17 is connected to an air compressor 18 through a pipeline.
[0045] In this embodiment, the biofilm attachment 7 is a rectangular frame composed of multiple hollow tubes, and multiple filaments that facilitate the attachment of microorganisms are hung inside the rectangular frame.
[0046] By adopting the above technical solution, multiple filaments are hung inside the rectangular frame to facilitate the attachment and reproduction of microorganisms, which then grow and degrade organic matter and ammonia nitrogen.
[0047] Air generated by air compressor 18 is stored in air compression tank 17 and then transported to aeration component 8 through aeration pipe 16 for aeration treatment. This is one of the core operations of biofilm wastewater treatment, and its purpose mainly revolves around meeting the metabolic needs of microorganisms, improving mass transfer efficiency, and realizing process functions. It provides dissolved oxygen required for the metabolism of aerobic microorganisms; the water turbulence generated by aeration can break the "stagnant layer" on the surface of the biofilm, allowing pollutants such as organic matter, ammonia nitrogen, and nutrients in the wastewater to diffuse more quickly to the surface of the biofilm and be adsorbed and degraded by microorganisms.
[0048] Continuous aeration constantly refreshes the mixed liquid outside the biofilm, preventing the accumulation of metabolic products (such as CO2 and nitrate) on the membrane surface, maintaining the substrate concentration gradient around the microorganisms, and increasing the reaction rate.
[0049] If the biofilm grows too thick, the inner layer may become anaerobic due to insufficient oxygen, producing gases such as H2S and CH4, leading to biofilm aging, shedding, and even emitting foul odors. The shear force of aeration can inhibit excessive biofilm growth, maintaining its thickness at 0.1–2 mm (depending on the process), ensuring the rationality of the membrane structure's "aerobic exterior, facultative interior" stratification, and balancing organic matter degradation and denitrification functions (such as simultaneous nitrification and denitrification).
[0050] The physical scouring effect of rising bubbles on the biofilm can cause aging and low-activity biofilm to detach, providing a space for new bacteria to attach and maintaining the high activity of the biofilm.
[0051] The hollow tube on the biofilm attachment 7 is connected to the water pumping pipe 9; the water pumping pipe 9 is connected to the filter 10; the filter 10 is connected to the inlet end of the liquid pump 11, and the outlet end of the liquid pump 11 is connected to the drain pipe 12; the drain pipe 12 extends to the outer end of the container 1.
[0052] By adopting the above technical solution, the wastewater treated by the biofilm is drawn by the pump 11 and enters the filter 10 through the pumping pipe 9 for filtration, and then discharged through the drain pipe 12.
[0053] In this embodiment, a control cabinet 22 is also installed inside the container 1, and a dosing tank 13 is fixed on one side of the control cabinet 22; a metering pump 14 is provided above the dosing tank 13, and the outlet end of the metering pump 14 is connected to a dosing pipe 15, which extends into the biofilm treatment tank 6.
[0054] By adopting the above technical solution, the dosing tank 13 is used to store nutrients or pH adjusters, and the metering pump 14 delivers the nutrients to the biofilm treatment tank 6 through the dosing pipe 15. Function: When the ratio of nutrients such as carbon (C), nitrogen (N), and phosphorus (P) in wastewater is unbalanced (such as C / N / P < 100:5:1 in industrial wastewater), supplementing with nutrients can maintain the metabolic balance of microorganisms and avoid the decline in biofilm activity due to insufficient substrate.
[0055] A metering pump 14 delivers a pH adjuster to the biofilm treatment tank 6 via a dosing pipe 15. Function: Biofilm microorganisms (especially nitrifying bacteria) are pH sensitive, and the pH of the mixed liquor typically needs to be controlled between 6.5 and 8.5 (the optimal pH for nitrification is 7.5 to 8.0). The addition of the agent buffers fluctuations in the influent pH, preventing inhibition of microbial enzyme activity.
[0056] The working principle of this utility model is: sedimentation tank 2 removes suspended solids (SS), colloidal particles and some organic matter from wastewater through gravity sedimentation, thereby reducing the load on subsequent biological treatment;
[0057] Anaerobic tank 3 utilizes anaerobic microorganisms (such as acid-producing bacteria and methanogenic bacteria) to decompose large organic molecules (such as cellulose and fat) into small fatty acids (VFAs), thereby improving the biodegradability of wastewater. Polyphosphate-accumulating bacteria release intracellular phosphorus (dissolved in water in the form of phosphate) under anaerobic conditions, while simultaneously taking up organic matter in the wastewater and storing it in their bodies to reserve energy for subsequent aerobic phosphorus uptake.
[0058] Aerobic tank 5 uses dissolved oxygen (DO = 2-4 mg / L) to decompose small molecule organic matter (such as VFAs) in wastewater into CO2 and H2O, significantly reducing COD / BOD.
[0059] The biofilm treatment tank 6 is formed by microorganisms attaching to the surface of the packing material (such as combined packing material, ceramsite, activated carbon) to form a biofilm, which can enrich high concentrations of microorganisms (especially nitrifying and denitrifying bacteria with long generation cycles) and has strong resistance to shock loads.
[0060] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0061] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A containerized integrated sewage treatment equipment that can be quickly installed, characterized in that: Includes a container (1), inside which is a rectangular box, which is provided with multiple partitions that divide the rectangular box into a sedimentation tank (2), an anaerobic tank (3), an aerobic tank (5) and a biofilm treatment tank (6); The container (1) is also equipped with a control cabinet (22), and a dosing tank (13) is fixed on one side of the control cabinet (22); a metering pump (14) is provided above the dosing tank (13), and a dosing pipe (15) is connected to the outlet end of the metering pump (14), and the dosing pipe (15) extends into the biofilm treatment tank (6).
2. The containerized integrated sewage treatment equipment that can be quickly installed according to claim 1, characterized in that: The sedimentation tank (2) is provided with a first circulation pump (19) on the outside. The outlet end of the first circulation pump (19) is connected to the upper end of the anaerobic tank (3) through a pipe, and the inlet end of the first circulation pump (19) is connected to the lower end of the sedimentation tank (2) through a pipe.
3. The containerized integrated sewage treatment equipment that can be quickly installed according to claim 1, characterized in that: The anaerobic tank (3) is equipped with a second circulation pump (20) on its outer side. The inlet of the second circulation pump (20) is connected to the aerobic tank (5) through a pipe, and the outlet is connected to the anaerobic tank (3) through a pipe.
4. The containerized integrated sewage treatment equipment that can be quickly installed according to claim 1, characterized in that: A third circulation pump (21) is provided on the outside of the biofilm treatment tank (6). The inlet of the third circulation pump (21) is connected to the biofilm treatment tank (6) through a pipe, and the outlet is connected to the anaerobic tank (3) through a pipe.
5. The containerized integrated sewage treatment equipment that can be quickly installed according to claim 1, characterized in that: The biofilm treatment tank (6) is equipped with a biofilm hanger (7) inside, and an aeration assembly (8) is provided below the biofilm hanger (7); the aeration assembly (8) is connected to an air compressor tank (17) through an aeration pipe (16); the air compressor tank (17) is connected to an air compressor (18) through a pipeline.
6. The containerized integrated sewage treatment equipment that can be quickly installed according to claim 5, characterized in that: The biofilm attachment (7) is a rectangular frame composed of multiple hollow tubes, and multiple filaments that facilitate the attachment of microorganisms are hung inside the rectangular frame; The hollow tube on the biofilm attachment (7) is connected to the water pumping pipe (9); the water pumping pipe (9) is connected to the filter (10); the filter (10) is connected to the inlet end of the liquid pump (11), and the outlet end of the liquid pump (11) is connected to the drain pipe (12); the drain pipe (12) extends to the outer end of the container (1).