Integrated microbial activated sludge expanding culture device for high-salinity oily sewage
By using hydrophilic modified porous packing material and aeration circulation technology in the high-salt and oily wastewater treatment system, the problem of small activated sludge aggregation was solved, the abundance of microorganisms and sludge retention were increased, and the wastewater treatment efficiency and system stability were improved.
Patent Information
- Application Number
- CN202422944161.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-11-29
AI Technical Summary
In the biochemical treatment system for high-salt and oily wastewater, the activated sludge aggregates are small, resulting in a low total microbial count and affecting wastewater treatment efficiency. This is especially true during the loading and unloading of oil products at docks or ports, where the "sludge run-off" phenomenon in the biochemical system is severe.
Hydrophilic modified porous packing material is used as a microbial carrier, and the packing material is installed in the aerobic tank in a ring or wall-type manner. Combined with the aeration device, the sewage circulates between the packing area and the aeration area, which promotes the attachment and growth of microorganisms on the surface and inside of the packing material, thereby increasing the abundance of microorganisms and the amount of activated sludge.
By increasing the abundance of microorganisms and the amount of activated sludge, the efficiency and stability of the biochemical treatment of high-salt and oily wastewater were enhanced, the risk of microbial loss was reduced, and the wastewater treatment effect was improved.
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Figure CN223674433U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of sewage treatment, in particular to a high-salt oily sewage integrated microbial activated sludge expansion device. BACKGROUND
[0002] At present, in the process of biodegradability wastewater treatment, the biochemical treatment process can significantly reduce the chemical oxygen demand (COD), ammonia nitrogen, total nitrogen, total phosphorus, color and other indicators in wastewater. The degradation efficiency of pollutants in wastewater is greatly affected by the concentration of activated sludge. The high-salt oily wastewater generated in the process of loading and unloading oil at the wharf or port has high salinity, large COD load, and large water quality fluctuation, etc. The activated sludge in the biochemical system, especially in the aerobic tank, is small, and the "sludge running" phenomenon is obvious during the water process, which reduces the total amount of microorganisms in the biochemical system and affects the treatment efficiency of wastewater. The utility model patent takes the hydrophilic modified filler as the microbial carrier to improve the organic matter degradation microbial abundance and improve the contact area of pollutants and activated sludge in wastewater. The activated sludge is a microbial aggregate with filler carrier, and a special structure of annular or wall type porous filler loading mode is arranged in the aerobic zone to improve the COD removal efficiency of high-salt oily wastewater at the wharf or port. The patent uses the water flow generated by the aeration of the aerobic tank to realize the circulation of the wastewater in the aeration area and the filler area, realizes the effective mass transfer between oxygen and organic matter in the filler (loaded activated sludge) and the wastewater, promotes the attachment and growth of microorganisms on the surface and inside of the filler, thereby improving the diversity and abundance of microorganisms, increasing the amount of activated sludge in the system and the microbial retention time, and further improving the operation efficiency and stability of the high-salt oily wastewater biochemical treatment process. SUMMARY
[0003] The purpose of the present application is to provide a high-salt oily sewage integrated microbial activated sludge expansion device, which is mainly used for expanding the microorganisms in the aerobic tank and improving the retention of activated sludge in the aerobic tank, solving the problem of no sludge or low sludge in the integrated high-salt oily sewage biochemical system, and further improving the sewage treatment efficiency.
[0004] In the first aspect, the utility model provides a high-salt oily sewage integrated microbial activated sludge expansion device, which comprises a box body, an anaerobic zone, an anoxic zone, an aerobic zone, a sedimentation zone and a clear liquid zone are sequentially arranged in the box body, and the aerobic zone comprises aeration area and filler area arranged in sections.
[0005] The filler area is provided with a porous mesh plate, and the porous mesh plate is loaded with modified porous filler.
[0006] The aeration area is provided with an aeration device, and the water flow generated by the aeration device drives the wastewater to circulate between the aeration area and the filler area.
[0007] The porous net plate of the integrated device of the present application can be arranged as a fixed bed in the filler area, and the porous filler is loaded in the filler area, so that the porous filler can be used as a carrier to allow the microorganisms to attach and grow on the surface or in the pores of the filler, thereby reducing the loss of microorganisms in the water flow, and improving the microorganism abundance in the aerobic tank and the contact efficiency of the sewage and the microorganisms. Meanwhile, the aeration area and the filler area of the present application are arranged in separate zones, which can not only avoid the shear force of the airflow and water flow generated in the aeration area from damaging the attachment state of the microorganisms on the filler, but also avoid the collision between the filler and the tank body, pipelines and the like, so as to ensure the expansion efficiency of the microorganisms in the aerobic tank and the amount of activated sludge, thereby improving the sewage treatment efficiency.
[0008] In an optional embodiment, the filler area is arranged in the form of a wall in the aerobic tank.
[0009] The optional embodiment can arrange the filler area in the form of a wall in the aerobic tank.
[0010] In an optional embodiment, the aeration device is arranged at the bottom of the aeration area.
[0011] The optional embodiment can arrange the aeration device at the bottom of the aeration area, which is convenient for installing the aeration device, and the rising of the bubbles from the bottom is beneficial for mass transfer.
[0012] In an optional embodiment, the filler area is arranged in the form of a wall in the aerobic tank.
[0013] The optional embodiment can arrange the filler area in the form of a wall in the aerobic tank.
[0014] In an optional embodiment, the porous filler is a square hydrophilic modified porous polyurethane or polypropylene filler.
[0015] The optional embodiment can use the square hydrophilic modified porous polyurethane or polypropylene filler as the porous filler.
[0016] In an optional embodiment, the mass density of the porous filler is not less than 2.8 kg / m 3 , the porosity is not less than 95%, and the contact angle is ≥60°.
[0017] The optional embodiment sets the contact angle of the porous filler to be not less than 60°, which is beneficial for the attachment of the microorganisms. The mass density and the porosity of the porous filler are set to be not less than 2.8 kg / m 3 and 95% respectively, so that the filler loaded with the microorganisms has a good fixing efficiency.
[0018] In an optional embodiment, the total bulk volume of the porous filler accounts for more than 40% of the total volume of the aerobic tank.
[0019] The optional embodiment can set the total bulk volume of the porous filler to be more than 40% of the total volume of the aerobic tank.
[0020] In the optional embodiment, the microbial activated sludge is a microbial aggregate with the modified filler as the microbial carrier. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0022] Figure 1 is a plan view of a wall-type filler loading method of a high-salinity oily wastewater integrated microbial activated sludge expansion device disclosed by the embodiments of the present application;
[0023] Figure 2 is an elevation view of a high-salinity oily wastewater integrated microbial activated sludge expansion device disclosed by the embodiments of the present application;
[0024] Figure 3 is an elevation view of another high-salinity oily wastewater integrated microbial activated sludge expansion device disclosed by the embodiments of the present application;
[0025] Figure 4 is a plan view of another high-salinity oily wastewater integrated microbial activated sludge expansion device disclosed by the embodiments of the present application.
[0026] Figure legend: 100-anaerobic zone; 200-anoxic zone; 300-aerobic zone; 400-settling zone; 101-top oil spill overflow outlet of the anaerobic zone; 102-communication port between the anaerobic zone and the aerobic zone; 201-communication port between the bottom of the anoxic tank and the bottom of the aerobic zone; 301-sludge backflow pipeline of the settling tank; 302-aeration area; 304-sludge backflow pipeline of the aerobic tank; 401-top overflow port of the aerobic tank; 402-clear water overflow weir; 303-filler area; 3031-top of the wall-type filler area; 500-liquid level control point; A-bubbles generated by aeration; B-intracirculation path of the aerobic tank wastewater. DETAILED DESCRIPTION
[0027] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.
[0028] In the description of the present application, it should be noted that the positions or location relationships indicated by the terms "in", "out", etc. are based on the positions or location relationships shown in the drawings or the positions or location relationships commonly used when the products of the present application are used, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated devices or elements must have a particular position, be constructed and operated in a particular position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are only used for differentiation and cannot be understood as indicating or implying relative importance.
[0029] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "set", "connected" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0030] Please refer to Figure 1 , Figure 1 is a plan view of a wall type filler loading method of a high-salt oily sewage integrated microbial active sludge expansion device disclosed by the embodiments of the present application. As shown in Figure 1 , the high-salt oily sewage integrated microbial active sludge expansion device comprises a box body, an anaerobic zone 100, an anoxic zone 200, an aerobic zone 300, a sedimentation zone 400 and a clear liquid zone (the clear liquid zone is located behind the sedimentation zone and is shielded, not shown in the drawing) are sequentially arranged in the box body, the sewage in the anaerobic zone 100 flows into the anoxic zone 200 through the communication port 102 between the anaerobic zone and the aerobic zone, and the anoxic zone 200 communicates with the bottom of the aerobic zone through the communication port 201 at the bottom of the anoxic zone. The aerobic zone 300 comprises a partitioned aeration area 302 and a filler area 303, wherein the sewage is returned from the aerobic zone 300 to the anoxic zone 200 through the aerobic tank sludge return pipeline 304.
[0031] Further, the filler area 303 is installed with a porous mesh plate loaded with porous filler; on the other hand, the aeration area 302 is installed with an aeration device, and the water flow generated by the aeration device pushes the sewage to circulate between the aeration area 302 and the filler area 303. On the other hand, the sewage in the aerobic zone overflows through the top overflow port 401 of the aerobic tank to the sedimentation zone 400, and the sewage after settling in the sedimentation zone 400 becomes clear water, which flows out from the clear water overflow weir 402 into the clear liquid zone.
[0032] In the embodiment of the present application, the filler area is arranged in the form of a wall filler, or a ring filler, or a combination of a ring filler and a wall filler.
[0033] The device of the embodiment of the present application can load the porous filler in the filler area 303 through the porous mesh plate, and further use the porous filler as a carrier to facilitate the growth of microorganisms in the aerobic tank 300, reduce the loss of microorganisms, and expand the microorganisms in the aerobic tank 300. Meanwhile, the aeration area 302 and the filler area 303 of the present application are arranged in a partitioned manner, and thus the airflow generated by the aeration area 302 can avoid colliding with the filler in the filler area 303, other fillers, pipelines, etc., and can prevent the filler from being washed by the local high-flow gas-liquid mixture, thereby solving the problem of no sludge or low sludge amount in the integrated high-salinity oil-containing sewage biochemical system, and improving the sewage treatment efficiency based on more active sludge.
[0034] In the embodiment of the present application, the water flow generated by the aeration device pushes the sewage to circulate between the aeration area 302 and the filler area 303, and thus the oxygen and organic matter can be effectively mass transferred between the filler and the sewage, the microorganisms can be attached and grown on the surface and inside of the filler, and thus the abundance of the microorganisms and the amount of the sludge can be increased. Finally, the higher the diversity and abundance of the microorganisms in the aerobic zone, the more the active sludge formed, and the higher the sewage treatment efficiency.
[0035] In the embodiment of the present application, as an optional implementation, as shown in Figure 1 In the embodiment of the present application, the filler area 303 is arranged in the form of a wall filler, or a ring filler, or a combination of a ring filler and a wall filler. Figure 1 In the embodiment of the present application, the filler area 303 is arranged in the form of a wall filler, or a ring filler, or a combination of a ring filler and a wall filler.
[0036] In the embodiment of the present application, a plurality of porous mesh plates can be stacked in a spaced manner to form a wall. Further, the porous mesh plate can be made of stainless steel or high-molecular difficult-to-degrade plastic plate.
[0037] In the embodiments of the present application, please refer to Figure 2 , Figure 2 is a front view of a high-salt oily sewage integrated microbial activated sludge expansion device disclosed by the embodiments of the present application. As shown in Figure 2 , the anaerobic zone 100, the anoxic zone 200, the aerobic zone 300 and the sedimentation zone 400 are each provided with a liquid level control point 500, wherein the top 3031 of the wall type filler region is flush with the liquid level control point 500.
[0038] In the embodiments of the present application, as an optional implementation, the aeration device is arranged at the bottom of the aeration region 302. This optional implementation can arrange the aeration device at the bottom of the aeration region 302, thereby facilitating the installation of the aeration device, and facilitating the rising of the bubbles A generated by aeration from the bottom. Meanwhile, please refer to Figure 3 , Figure 3 is a front view of a high-salt oily sewage integrated microbial activated sludge expansion device disclosed by the embodiments of the present application. As shown in Figure 3 , the water flow generated by aeration pushes the sewage to circulate in the aerobic zone along the aerobic zone sewage internal circulation path B.
[0039] In the embodiments of the present application, as an optional implementation, please refer to Figure 4 , Figure 4 is a top view of a high-salt oily sewage integrated microbial activated sludge expansion device disclosed by the embodiments of the present application. As shown in Figure 4 , the filler region 303 is arranged in the aerobic zone 300 in a ring shape. This optional implementation can arrange the filler region 303 in the aerobic zone 300 in a ring shape.
[0040] In the embodiments of the present application, as an optional implementation, the porous filler is a square hydrophilic modified porous polyurethane or polypropylene filler. This optional implementation can use the square hydrophilic modified porous polyurethane or polypropylene filler as the porous filler.
[0041] In the embodiments of the present application, as an optional implementation, the contact angle of the porous filler is not less than 60°, which can make the filler conducive to the adhesion of microorganisms. The mass density and porosity of the porous filler are respectively set to not less than 2.8 kg / m 3 and 95%, which can make the microbial-loaded filler have a good settling effect.
[0042] In the embodiments of the present application, as an optional implementation, the total bulk volume of the porous filler accounts for more than 40% of the total volume of the aerobic zone 300. This optional implementation can set the total bulk volume of the porous filler to account for more than 40% of the total volume of the aerobic zone 300.
[0043] In the embodiments of the present application, the microbial activated sludge is a microbial aggregate with modified fillers as the microbial carrier, and the microbial sludge form that can be agglomerated, settled or suspended in the non-traditional biochemical system.
[0044] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.
[0045] The above only is the preferred embodiment of the present application, and is not used to limit the present application, and the present application can have various changes and changes for the person skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims
1. A high-salt oily sewage integrated microbial activated sludge propagation device, comprising a box body, an anaerobic zone, an anoxic zone, an aerobic zone, a sedimentation zone and a clear liquid zone are sequentially arranged in the box body, characterized in that, The aerobic zone comprises a partitioned aeration zone and a filler zone; The filler zone is installed with a porous mesh plate loaded with porous fillers; The aeration zone is installed with an aeration device generating water flow to push the sewage to circulate between the aeration zone and the filler zone.
2. The apparatus of claim 1, wherein, The filler zone is arranged in a wall type filler, or a ring type filler, or a combination of the wall type filler and the ring type filler.
3. The apparatus of claim 1, wherein, The aeration device is arranged at the bottom of the aeration zone.
4. The apparatus of claim 1, wherein, The porous fillers are square hydrophilic modified porous polyurethane or polypropylene fillers.
5. The apparatus of claim 4, wherein, The mass density of the porous filler is not less than 2.8 kg / m 3 The porosity is not less than 95%, and the contact angle is ≥ 60°.
6. The apparatus of claim 1, wherein, The total bulk volume of the porous fillers accounts for more than 40% of the total volume of the aerobic zone.
7. The apparatus of claim 1, wherein, The microbial activated sludge is a microbial aggregate with modified fillers as microbial carriers.