CN213112947U - AO is biochemical-MBR integration effluent treatment plant - Google Patents
AO is biochemical-MBR integration effluent treatment plant Download PDFInfo
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- CN213112947U CN213112947U CN202021341389.3U CN202021341389U CN213112947U CN 213112947 U CN213112947 U CN 213112947U CN 202021341389 U CN202021341389 U CN 202021341389U CN 213112947 U CN213112947 U CN 213112947U
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Abstract
The utility model relates to the field of environmental protection equipment, in particular to an AO biochemical-MBR integrated wastewater treatment device, which comprises a water inlet, a grid channel, an AO biochemical-MBR integrated wastewater treatment device box body and a water outlet; an anaerobic tank, an aerobic tank, an MBR reaction tank and a clean water tank are respectively arranged in the AO biochemical-MBR integrated wastewater treatment device box body according to the water flow direction in the wastewater treatment process; a reservoir is arranged in the clean water tank, and one side, far away from the MBR reaction tank, in the clean water tank is connected with the water outlet; the utility model discloses area is little, the installation maintenance cost is low, and waste water treatment efficiency is high, is applicable to polytype sewage treatment.
Description
Technical Field
The utility model relates to an environmental protection equipment field especially relates to an equipment for waste water treatment.
Background
AO is the abbreviation of anaerobic Oxic, AO technology is also called anaerobic aerobic technology, A (anaerobic) is anaerobic section, used for removing nitrogen and phosphorus; o (oxic) is an aerobic section for removing organic matter from water. Its advantages are that it not only degrades organic pollutant, but also has a certain function of removing nitrogen and phosphorus, and the anaerobic hydrolysis technology is used as the pretreatment of activated sludge, so the AO method is an improved activated sludge method. The AO method has simple flow, does not need to add a carbon source and a post aeration tank, and takes the original sewage as the carbon source; before denitrification, after nitrification, internal circulation is arranged, and an organic substrate in the raw sewage is used as a carbon source, so that the effect is good, and the denitrification reaction is sufficient; after the aeration tank, denitrification residues are further removed, and the quality of treated water is improved; and (3) after effluent automatically flows into a secondary sedimentation tank for solid-liquid separation, enabling supernatant in the sedimentation tank to flow into a disinfection tank, adding chlorine tablets for contact dissolution, and discharging after harmful strains in water reach the standard after killing. The existing problems are that a secondary sedimentation tank is generally arranged for treating wastewater by an AO process, and the secondary sedimentation tank has the problems of large occupied area of equipment and high construction and maintenance costs. The Membrane Bioreactor (MBR) water treatment technology is a high-efficiency biochemical water treatment technology combining biotechnology and Membrane technology, and the application of a hollow fiber Membrane is used for replacing a secondary sedimentation tank in an activated sludge process to carry out solid-liquid separation, so that the purpose of sludge-water separation is effectively achieved, and the problems of large occupied area and high construction and maintenance costs caused by the arrangement of the secondary sedimentation tank are solved. If the AO process method is combined with the MBR technology, the technical defects of large occupied area and high construction and maintenance cost can be overcome while the AO process is utilized.
SUMMERY OF THE UTILITY MODEL
The utility model aims to remedy the defects of the prior art and provide a biochemical AO-MBR integrated wastewater treatment device to solve the problems of large occupied area and high construction and maintenance cost.
Specifically, the technical scheme of the utility model is that:
an AO biochemical-MBR integrated wastewater treatment device comprises a water inlet, a grating channel, an AO biochemical-MBR integrated wastewater treatment device box body and a water outlet; an anaerobic tank, an aerobic tank, an MBR reaction tank and a clean water tank are respectively arranged in the AO biochemical-MBR integrated wastewater treatment device box body according to the water flow direction in the wastewater treatment process; the anaerobic tank, the aerobic tank and the MBR reaction tank are separated by partition plates, outlets for unidirectional circulation of wastewater are arranged in the partition plates, the grid channel is arranged at the top of the AO biochemical-MBR integrated wastewater treatment device box body, and a plurality of grids for intercepting suspended matters in the wastewater are arranged in the AO biochemical-MBR integrated wastewater treatment device box body and are connected with the water inlet; a first combined filler is arranged in the anaerobic tank and supported by a first fixed structure fixed on the side wall of the anaerobic tank; a second combined filler is arranged in the aerobic tank, a second fixing structure for supporting the second combined filler is arranged on the side wall of the aerobic tank, and an aeration device is also arranged at the bottom of the aerobic tank; a membrane bioreactor is arranged in the MBR reaction tank, a sludge settling zone is arranged at the bottom of the MBR reaction tank, and a sludge pump is further arranged in the sludge settling zone and used for refluxing sludge in the sludge settling zone to the anaerobic tank or discharging the sludge to the outside of the AO biochemical-MBR integrated wastewater treatment device; the inside cistern that is of clean water pond, keep away from in the clean water pond one side of MBR reaction tank is connected with the delivery port.
Further, an aeration device is arranged between the membrane bioreactor and the sludge settling zone.
Further, an aeration device at the bottom of the aerobic tank and an aeration device in the MBR reaction tank are both disc type microporous aerators.
Furthermore, a water production pump and a backwashing pump are arranged in the clean water tank.
Furthermore, an ultraviolet disinfection lamp is arranged at the top of the clean water tank.
Further, the first combined filler is an anaerobic microorganism medium filler, and the second combined filler is a biofilm contact oxidation filler.
Furthermore, the carriers of the first combined filler and the second combined filler are double-ring large plastic rings, the outer ring presses the hydroformylation fibers or the polyester yarns on the ring of the ring to uniformly distribute fiber bundles, and the inner ring is a snowflake-shaped plastic branch.
Furthermore, a rotatable mechanical grating is arranged in the grating channel.
The utility model has the beneficial effects that the utility model discloses combine AO technology and MBR technique to the MBR reaction tank replaces the two heavy ponds in the activated sludge process, carries out solid-liquid separation to waste water, and effectual effective reduction equipment area reduces maintenance cost and simple to operate. And the anaerobic tank, the aerobic tank and the MBR reaction tank are separated by partition plates, an outlet for unidirectional circulation of wastewater is arranged in each partition plate, water outlet among the tanks does not need pumping, the wastewater can directly flow to the next tank for treatment without installing a water pump and a connecting pipeline, the floor area of equipment is further reduced, the maintenance cost is reduced, in addition, an aeration tank and a reaction tank for traditional sewage treatment are combined into one, and all process facilities for three-stage treatment are replaced, so the floor area can be greatly reduced, and the civil engineering investment is saved.
Drawings
FIG. 1 is a schematic structural view of an AO biochemical-MBR integrated wastewater treatment device provided by a first embodiment.
In the figure: 1 water inlet, 2 grid canals, 3 anaerobism ponds, 4 good oxygen ponds, 5MBR reaction tank, 6 clean water ponds, 7 delivery ports, 8 first combined filler, 9 second combined filler, 10 aeration equipment, 11 membrane bioreactor, 12 sludge pump, 13 product water pumps, 14 backwash pumps.
Detailed Description
The embodiments described below are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, the embodiment provides an AO biochemical-MBR integrated wastewater treatment device, which includes a water inlet 1, a grating channel 2, an AO biochemical-MBR integrated wastewater treatment device box and a water outlet 7; an anaerobic tank 3, an aerobic tank 4, an MBR reaction tank 5 and a clean water tank 6 are respectively arranged in the AO biochemical-MBR integrated wastewater treatment device box body according to the water flow direction in the wastewater treatment process; the anaerobic tank 3, the aerobic tank 4 and the MBR reaction tank 5 are separated by partition plates, outlets for unidirectional circulation of wastewater are formed in the partition plates, the grating channel 2 is arranged at the top of the AO biochemical-MBR integrated wastewater treatment device box body, and a plurality of rotatable mechanical gratings are arranged inside the grating channel and used for intercepting suspended matters and floating matters in wastewater. And is connected with the water inlet 1; a first combined filler 8 is arranged in the anaerobic tank 3, and the first combined filler 8 is supported by a first fixed structure fixed on the side wall of the anaerobic tank; a second combined filler 9 is arranged in the aerobic tank 4, a second fixed structure for supporting the second combined filler 9 is arranged on the side wall of the aerobic tank 4, and an aeration device 10 is also arranged at the bottom of the aerobic tank 4; a membrane bioreactor 11 is arranged in the MBR reaction tank 5, a sludge settling zone is arranged at the bottom of the MBR reaction tank 5, and a sludge pump 12 is also arranged in the sludge settling zone; the inside cistern that is of clean water basin 6, keep away from in the clean water basin 6 one side of MBR reaction tank 5 is connected with delivery port 7. Through the arrangement, the AO-MBR process integration is realized, so that a secondary sedimentation tank required by the AO process is not required to be arranged in the AO biochemical-MBR integrated wastewater treatment device, and the AO biochemical-MBR integrated wastewater treatment device is replaced by the MBR reaction tank 5, so that the floor area of equipment is effectively reduced, the maintenance cost is reduced, and the installation is convenient. Moreover, the anaerobic tank 3, the aerobic tank 4 and the MBR reaction tank 5 are separated by partition plates, outlets for unidirectional circulation of wastewater are formed in the partition plates, water is discharged between the tanks without pumping, the wastewater can directly flow to the next zone for treatment without installing a water pump and a connecting pipeline, the floor area of equipment is further reduced, and the maintenance cost is reduced.
In this embodiment, the wastewater enters the grid channel 2 from the water inlet 1, a plurality of grids for intercepting suspended matters in the wastewater are arranged inside the grid channel 2 to intercept large suspended matters in the wastewater, and the wastewater is pretreated so as to facilitate subsequent treatment and ensure normal operation of subsequent equipment. Then the wastewater enters the anaerobic tank 3, a first combined filler 8 is arranged in the anaerobic tank 3, the first combined filler 8 is an anaerobic microorganism medium filler, anaerobic microorganisms are utilized to carry out anaerobic fermentation on the wastewater, organic matters which are difficult to degrade are converted into organic matters which are easy to degrade, further, the wastewater enters the aerobic tank 4, an aeration device 10 is arranged at the bottom of the aerobic tank 4 to provide sufficient oxygen content for the aerobic tank 4, a second combined filler 9 is arranged in the aerobic tank 4, and the second combined filler 9 is a biomembrane contact oxidation filler, so that the aerobic nitrification effect is achieved, and organic pollutants which are difficult to degrade by a physicochemical method in the water can be removed by the wastewater under the biochemical effect of the aerobic microorganisms. Preferably, the carriers of the first combined filler 8 and the second combined filler 9 are double-ring large plastic rings, the outer ring presses the hydroformylation fibers or polyester yarns on the rings of the rings to uniformly distribute fiber bundles, and the inner ring is a snowflake-shaped plastic branch, so that the film can be hung, bubbles can be effectively cut, and the transfer rate and the utilization rate of oxygen are improved. The water-gas biomembrane is fully exchanged, and the organic matters in the water are efficiently treated. Then, the wastewater enters the MBR reaction tank 5, a membrane bioreactor 11 is arranged in the MBR reaction tank 5, the core technology of the membrane bioreactor is a membrane separation technology, a plurality of separation membranes are arranged in the membrane bioreactor 11, the membrane bioreactor 11 removes organic matters in the wastewater by utilizing the filtration of a separation membrane component and the metabolism of microorganisms, the separation membranes are materials with a selective separation function, the working principle is a physical mechanical screening principle, the separation process is a process of separating different components of feed liquid or concentrating effective components by utilizing the selective separation mechanism of the membranes, the purpose of sludge-water separation can be effectively achieved, and nitrifying bacteria can be effectively intercepted by utilizing the high-efficiency interception function of the membranes, so that the nitrifying bacteria can be completely retained in the membrane bioreactor 11, the nitration reaction is ensured to be smoothly carried out, and ammonia nitrogen can be effectively removed, the loss of the sludge is avoided, and macromolecular organic matters which are difficult to degrade temporarily can be intercepted, so that the retention time of the macromolecular organic matters in the reactor is prolonged, and the macromolecular organic matters are decomposed to the maximum extent. After the reaction, purified clean water is pumped into the clean water tank 6 through a water production pump 13 in the clean water tank 6, sludge generated by the reaction enters a sludge settling zone at the bottom of the MBR reaction tank 5, and the sludge settling zone comprises a plurality of inclined plates and can enable the sludge to quickly slide to the bottom of the sludge settling zone; the sludge settling zone is internally provided with a sludge pump 12 which is used for returning the sludge in the sludge settling zone to the anaerobic tank 3 to ensure that the sludge in the sludge settling zone is aged very long, thereby greatly improving the degradation efficiency of organic matters difficult to degrade, or the sludge is discharged to the outside of the AO biochemical-MBR integrated wastewater treatment device to prevent the membrane blockage problem of the MBR reaction tank 5 caused by excessive sludge in the sludge settling zone. Moreover, an aeration device is arranged between the membrane bioreactor 11 and the sludge settling zone, and the aeration device 10 at the bottom of the aerobic tank 4 and the aeration device in the MBR reaction tank 5 are disc-type microporous aerators which have the characteristics of small aeration bubble diameter, small gas-liquid interface diameter, large gas-liquid interface area, uniform bubble diffusion, no eyelet blockage, strong corrosion resistance, low consumption, large sewage treatment capacity and the like. The wastewater enters the clean water tank 6 after passing through the MBR reaction tank 5, an ultraviolet disinfection lamp is arranged at the top of the clean water tank 6 and used for disinfecting and sterilizing the treated clean water, a backwashing pump 14 is further arranged in the clean water tank 6, and the backwashing pump 14 pumps the clean water tank 6 into the membrane bioreactor 11, so that the membrane module in the membrane bioreactor 11 is cleaned, and the service life of the membrane is prolonged. And finally, the treated clean water leaves the AO biochemical-MBR integrated wastewater treatment device through the water outlet 7.
The utility model discloses it is efficient to get rid of impurity, to the organic matter in the waste water, ammonia nitrogen etc. all have higher removal effect, and have independent sludge recirculation system, can cultivate the mud that has unique function, and simultaneously, the degradation rate of difficult degradation material is than higher, further improves waste water treatment ability. More preferably, the utility model discloses area is little, and the installation maintenance cost is low, and waste water treatment is efficient, is applicable to polytype sewage treatment.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.
Claims (8)
1. An AO biochemical-MBR integrated wastewater treatment device comprises a water inlet, a grating channel, an AO biochemical-MBR integrated wastewater treatment device box body and a water outlet; the AO biochemical-MBR integrated wastewater treatment device is characterized in that an anaerobic tank, an aerobic tank, an MBR reaction tank and a clean water tank are respectively arranged in the AO biochemical-MBR integrated wastewater treatment device box body according to the water flow direction in the wastewater treatment process; the anaerobic tank, the aerobic tank and the MBR reaction tank are separated by partition plates, outlets for unidirectional circulation of wastewater are arranged in the partition plates, the grid channel is arranged at the top of the AO biochemical-MBR integrated wastewater treatment device box body, and a plurality of grids for intercepting suspended matters in the wastewater are arranged in the AO biochemical-MBR integrated wastewater treatment device box body and are connected with the water inlet; a first combined filler is arranged in the anaerobic tank and supported by a first fixed structure fixed on the side wall of the anaerobic tank; a second combined filler is arranged in the aerobic tank, a second fixing structure for supporting the second combined filler is arranged on the side wall of the aerobic tank, and an aeration device is also arranged at the bottom of the aerobic tank; a membrane bioreactor is arranged in the MBR reaction tank, a sludge settling zone is arranged at the bottom of the MBR reaction tank, and a sludge pump is further arranged in the sludge settling zone and used for refluxing sludge in the sludge settling zone to the anaerobic tank or discharging the sludge to the outside of the AO biochemical-MBR integrated wastewater treatment device; the inside cistern that is of clean water pond, keep away from in the clean water pond one side of MBR reaction tank is equipped with the delivery port.
2. The AO biochemical treatment-MBR integrated wastewater treatment device according to claim 1, characterized in that an aeration device is arranged between the membrane bioreactor and the sludge settling zone.
3. The AO biochemical treatment-MBR integrated wastewater treatment device according to claim 1, characterized in that the aeration device at the bottom of the aerobic tank and the aeration device in the MBR reaction tank are both disc type microporous aerators.
4. The AO biochemical treatment-MBR integrated wastewater treatment device according to claim 1, characterized in that a water production pump and a backwashing pump are arranged inside the clean water tank.
5. The AO biochemical treatment-MBR integrated wastewater treatment device as claimed in claim 1, wherein an ultraviolet disinfection lamp is arranged on the top of the clean water tank.
6. The AO biochemical treatment-MBR integrated wastewater treatment device according to claim 1, characterized in that the first combined filler is anaerobic microorganism medium filler, and the second combined filler is biofilm contact oxidation filler.
7. The AO biochemical treatment-MBR integrated wastewater treatment device according to claim 1, characterized in that the carriers of the first combined filler and the second combined filler are double-ring large plastic rings, the outer ring presses the hydroformylation fiber or the polyester yarn on the ring of the ring to uniformly distribute the fiber bundles, and the inner ring is a snowflake-shaped plastic branch.
8. The AO biochemical treatment-MBR integrated wastewater treatment device according to claim 1, wherein a rotatable mechanical grating is arranged in the grating channel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021341389.3U CN213112947U (en) | 2020-07-09 | 2020-07-09 | AO is biochemical-MBR integration effluent treatment plant |
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| CN202021341389.3U CN213112947U (en) | 2020-07-09 | 2020-07-09 | AO is biochemical-MBR integration effluent treatment plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113587989A (en) * | 2021-07-28 | 2021-11-02 | 青岛明赫渔业工程科技有限责任公司 | Tail water pretreatment device with impurity detection function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113587989A (en) * | 2021-07-28 | 2021-11-02 | 青岛明赫渔业工程科技有限责任公司 | Tail water pretreatment device with impurity detection function |
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