CN214360900U - Fluidized bed biological membrane sewage treatment integrated device - Google Patents
Fluidized bed biological membrane sewage treatment integrated device Download PDFInfo
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- CN214360900U CN214360900U CN202120569667.9U CN202120569667U CN214360900U CN 214360900 U CN214360900 U CN 214360900U CN 202120569667 U CN202120569667 U CN 202120569667U CN 214360900 U CN214360900 U CN 214360900U
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Abstract
The utility model discloses a fluidized bed biological membrane sewage treatment integrated device, which comprises a dosing tank, a coagulating sedimentation tank, an anaerobic fluidized bed, an aerobic fluidized bed and a secondary sedimentation tank, wherein the bottom of the dosing tank is communicated with the bottom of the coagulating sedimentation tank, the top of the coagulating sedimentation tank is communicated with the top of the anaerobic fluidized bed, the bottom of the anaerobic fluidized bed is communicated with the bottom of the aerobic fluidized bed, and the upper part of the aerobic fluidized bed is communicated with the upper part of the secondary sedimentation tank; the integrated device for treating sewage by the fluidized bed and the biological membrane can effectively accelerate the degradation efficiency of pollutants in the sewage through the synergistic effect of the coagulating sedimentation tank, the anaerobic fluidized bed, the aerobic fluidized bed and the secondary sedimentation tank as well as the biological treatment module, and is suitable for treating domestic sewage with various concentrations; meanwhile, nitrogen in the sewage can be effectively treated, large-volume pool return nitration liquid is not needed, and treatment equipment is not additionally built, so that various industrial wastewater and high-concentration wastewater can be purified.
Description
Technical Field
The utility model relates to a sewage treatment system, concretely relates to fluidized bed biomembrane sewage treatment integrated device.
Background
With the rapid development of economy in China, the living standard of people is continuously improved, the sewage yield is continuously increased, the types and the concentrations of pollutants are respectively increased, and the sewage treatment integrated equipment of the A2O process has general treatment efficiency because the number of microorganisms borne by activated sludge is limited (the microorganisms borne by the activated sludge is about 2-3 g/L). If the standard of the discharged water quality needs to be improved, higher activated sludge concentration is needed, or a plurality of devices are connected for use, and the two directly result in the increase of capital cost, operation cost and sludge disposal cost.
The existing integrated equipment and process of the A2O process are basically as follows: the pretreated wastewater firstly enters an anaerobic tank, and a large amount of anaerobic activated sludge in the anaerobic tank undergoes the following steps: a hydrolysis stage; acid-producing fermentation stage; a hydrogen-producing and acetic acid-producing stage; in the methane production stage, part of organic matters are degraded, meanwhile, microorganisms in anaerobic activated sludge hydrolyze macromolecular organic matters into micromolecular easily-degradable organic matters, in an anoxic tank, sewage is mixed with nitrifying liquid flowing back from an aerobic tank, nitrate nitrogen is converted into nitrogen under the action of denitrifying bacteria in activated sludge and is discharged from a system, the sewage enters the aerobic tank from the anoxic tank, the organic matters are continuously degraded by the aerobic microorganisms in the activated sludge, BOD is reduced, meanwhile, the nitrifying bacteria convert ammonia nitrogen and organic nitrogen into nitrate nitrogen, and the nitrate nitrogen is returned to the anoxic tank through the backflow of the nitrifying liquid to perform denitrification. The sedimentation tank carries out mud-water separation on the mixture of the activated sludge and water discharged by the biochemical system through gravity sedimentation, the separated supernatant is discharged, and the part of the settled activated sludge is refluxed to the anaerobic tank at the front end of the system to continuously play a role.
The existing A2O process integrated sewage treatment equipment 1 has low pollutant degradation efficiency, and the existing equipment has low microorganism density (the activated sludge microorganism carrying capacity is about 2-5 g/L), and is suitable for treating low-concentration domestic sewage. Because of different requirements of nitrifying bacteria and denitrifying bacteria on the oxygen content of the environment, the prior art can only be provided with an anoxic tank, and the nitrifying liquid flows back to the anoxic tank for denitrification treatment by means of sewage nitration reaction in the aerobic tank, so that the power resource is relatively wasted, and the volume of the returned nitrifying liquid is met by a large tank capacity. Only a biochemical system is needed, and a pretreatment process section is additionally established when the industrial wastewater and the high-concentration wastewater are treated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a fluidized bed biomembrane sewage treatment integrated device.
In order to achieve the above purpose, the following scheme is provided: a fluidized bed biological membrane sewage treatment integrated device comprises a dosing tank, a coagulating sedimentation tank, an anaerobic fluidized bed, an aerobic fluidized bed and a secondary sedimentation tank, wherein the bottom of the dosing tank is communicated with the bottom of the coagulating sedimentation tank, the top of the coagulating sedimentation tank is communicated with the top of the anaerobic fluidized bed, the bottom of the anaerobic fluidized bed is communicated with the bottom of the aerobic fluidized bed, the upper part of the aerobic fluidized bed is communicated with the upper part of the secondary sedimentation tank, the coagulating sedimentation tank and the secondary sedimentation tank are internally provided with a uniform inclined tube filler, the anaerobic fluidized bed and the aerobic fluidized bed are internally provided with a biological treatment module, the biological treatment module comprises an upper baffle plate, a lower baffle plate and a plurality of PVA carriers, the upper baffle plate is arranged on the upper parts of the aerobic fluidized bed and the anaerobic fluidized bed, the lower baffle plate is arranged on the lower parts of the aerobic fluidized bed and the anaerobic fluidized bed, and the PVA carriers are filled between the upper baffle plate and the lower baffle plate, the bottom of the coagulating sedimentation tank is provided with a coagulating sewage outlet, and the bottoms of the aerobic fluidized bed, the anaerobic fluidized bed and the secondary sedimentation tank are all connected with a sewage outlet pipe.
Further, a plurality of partition plates are arranged in the dosing tank.
Furthermore, a flow pushing device is arranged in the anaerobic fluidized bed and is arranged on one side of the lower baffle plate close to the upper baffle plate.
Furthermore, an aeration device is arranged in the aerobic fluidized bed and is arranged on one side of the lower baffle plate close to the upper baffle plate.
Furthermore, a drain pipe is arranged on one side of the secondary sedimentation tank, which is far away from the aerobic fluidized bed.
The utility model discloses a theory of operation and advantage lie in: the integrated device for treating sewage by the fluidized bed and the biological membrane can effectively accelerate the degradation efficiency of pollutants in the sewage through the synergistic effect of the coagulating sedimentation tank, the anaerobic fluidized bed, the aerobic fluidized bed and the secondary sedimentation tank as well as the biological treatment module, and is suitable for treating domestic sewage with various concentrations; meanwhile, nitrogen in the sewage can be effectively treated, large-volume pool return nitration liquid is not needed, and treatment equipment is not additionally built, so that various industrial wastewater and high-concentration wastewater can be purified.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Reference numerals in the drawings of the specification include:
1. the system comprises a dosing tank, 2 a coagulating sedimentation tank, 3 an inclined tube filler, 4 a coagulating drainage pipe, 5 an anaerobic fluidized bed, 6 an upper baffle, 7 a lower baffle, 8 a PVA carrier, 9 a plug flow device, 10 an aerobic fluidized bed, 11 an aeration device, 12 a secondary sedimentation tank, 13 a drainage pipe and 14 a drainage pipe.
Detailed Description
The following is further detailed by the specific embodiments:
as shown in fig. 1, a fluidized bed biological membrane sewage treatment integrated device comprises a dosing tank 1, a coagulating sedimentation tank 2, an anaerobic fluidized bed, an aerobic fluidized bed 10 and a secondary sedimentation tank 12, wherein the bottom of the dosing tank 1 is communicated with the bottom of the coagulating sedimentation tank 2, the top of the coagulating sedimentation tank 2 is communicated with the top of the anaerobic fluidized bed 5, the bottom of the anaerobic fluidized bed 5 is communicated with the bottom of the aerobic fluidized bed 10, the upper part of the aerobic fluidized bed 10 is communicated with the upper part of the secondary sedimentation tank 12, a uniform inclined tube filler 3 is arranged in the coagulating sedimentation tank 2 and the secondary sedimentation tank 12, biological treatment modules are arranged in the anaerobic fluidized bed 5 and the aerobic fluidized bed 10, each biological treatment module comprises an upper baffle 6, a lower baffle 7 and a plurality of PVA carriers 8, the upper baffle 6 is arranged on the upper parts of the aerobic fluidized bed 10 and the anaerobic fluidized bed 5, the lower baffle 7 is arranged on the lower parts of the aerobic fluidized bed 10 and the anaerobic fluidized bed 5, PVA carrier 8 is filled between the upper baffle 6 and the lower baffle 7, the bottom of the coagulating sedimentation tank 2 is provided with a coagulating drainage outlet 4, and the bottoms of the aerobic fluidized bed 10, the anaerobic fluidized bed 5 and the secondary sedimentation tank 12 are all connected with a drainage pipe 14.
Wherein, be used for adding the PH regulator in the medicine pond 1, flocculating agent and coagulant aid, coagulating sedimentation tank 2 and pipe chute filler 3 are used for deposiing the precipitate of sewage after the flocculation, aerobic fluidized bed 10 and anaerobic fluidized bed 5 all are used for the processing sewage of microorganism, PVA filler is used for being adhered to by the microorganism, go up the position that baffle 6 and lower baffle 7 are used for restricting PVA filler, prevent PVA filler escape, two heavy ponds 12 and pipe chute filler 3 synergism, be used for carrying out the secondary sedimentation to the water that finishes by aerobic fluidized bed 10, coagulating sewage outlet 4 is used for discharging the precipitate in coagulating sedimentation tank 2, blow off pipe 14 is used for discharging the mud in anaerobic fluidized bed 5, aerobic fluidized bed 10 and two heavy ponds 12.
As shown in fig. 1, a plurality of partition plates are arranged in the dosing tank 1.
Wherein, each baffle makes and forms a longer passageway in the medicine pond 1 for the medicament that adds can be in medicine pond 1 with sewage intensive mixing reaction.
As shown in figure 1, a plug flow device is arranged in the anaerobic fluidized bed 5 and is arranged on one side of the lower baffle 7 close to the upper baffle 6.
Wherein, the flow pushing device is used for pushing the sewage flow of the anaerobic fluidized bed 5, and the flow pushing device 9 is a mature technology in the prior art and is not described in detail herein.
As shown in figure 1, an aeration device is arranged in the aerobic fluidized bed 10 and is arranged on one side of the lower baffle plate 7 close to the upper baffle plate 6.
Wherein, the aeration device 11 is used for aerating the sewage in the aerobic fluidized bed 10, and the aeration device 11 is a mature technology in the prior art and is not described herein again.
As shown in figure 1, a drain pipe 13 is arranged on one side of the secondary sedimentation tank 12 away from the aerobic fluidized bed 10.
The drain pipe 13 is used for discharging the treated water out of the device.
The specific implementation process is as follows:
compared with a common nitrogen and phosphorus removal A2O system, the integral device for treating sewage by the fluidized bed and the biomembrane is provided with an anaerobic fluidized bed 5, an aerobic fluidized bed 10 and a secondary sedimentation tank 12, and does not need an anoxic tank for auxiliary nitrogen removal and does not need nitrifying liquid backflow. The coagulating sedimentation tank 2 for pretreating sewage is arranged at the front end of the anaerobic fluidized bed 5 to pretreat sewage, and is more practical when dealing with industrial wastewater and high-concentration wastewater. The specific difference with current integration equipment lies in:
through set up coagulating sedimentation tank 2 at the front end, realize that sewage preliminary treatment flow set and in integrated equipment, when reply industrial waste water and high concentration waste water, need not to build in addition that the preliminary treatment technology section is convenient more practical. The coagulating sedimentation tank 2 adopts a structure of inclined tube seasonings, and utilizes a shallow tank principle, so that the sedimentation efficiency is high, the particles in the discharged water are less, the pressure of a rear-end biochemical system is effectively reduced, and the stable water inlet of the biochemical system is ensured;
the PVA carrier 8 is added into the anaerobic fluidized bed 5 and the aerobic fluidized bed 10, so that the microorganism bearing capacity of the biochemical system is greatly expanded, and the PVA carrier 8 has a higher specific surface area and can help the system to realize the great improvement of the total microorganism bearing capacity;
by adding the microbial inoculum from the external source as a microbial inoculation means, the viable bacteria content of the microbial inoculum from the external source is high, and a biomembrane can be rapidly formed on the PVA carrier 8, so that a pure biomembrane method system completely without activated sludge is formed, the BOD load can reach 50 KG/cubic carrier/day
The escape-proof upper baffle 6 and the lower baffle 7 can limit the PVA carrier 8 in the space between the anaerobic fluidized bed 5 and the aerobic fluidized bed 10, the density of the PVA carrier 8 is 1.02g/cm, the PVA carrier can be suspended in water after being carried with a biological membrane, and the PVA carrier can be easily mixed with the water by the flow pushing equipment 9 and the aeration equipment 11 and is uniformly suspended in the water to be in a fluidized state;
by means of the characteristic that the porous structure of the PVA carrier 8 is in an aerobic environment on the outer surface in the aerobic fluidized bed 10 and in an anoxic environment at the center, nitrobacteria and denitrifying bacteria are added into the aerobic fluidized bed 10 in an auxiliary mode, so that the denitrifying bacteria are gathered in the anoxic zone in the center of the PVA carrier 8, the nitrobacteria are gathered in the aerobic zone on the outer layer, and further synchronous nitrification and denitrification nitrogen removal are realized in a single tank body without an anoxic tank and nitrification liquid backflow. And the space and the power are saved.
Compared with the existing sewage treatment integrated equipment, the fluidized bed biological membrane sewage treatment integrated device has higher microorganism density. Through increasing novel PVA (polyvinyl alcohol) special foaming biological solidification carrier to former system in, can realize under the unchangeable circumstances of pond volume, improve the total microorganism bearing capacity of this device, PVA carrier 8 possesses very big specific surface area and excellent hydrophilicity, under the input volume that takes 10% of pond volume as the standard, carrier BOD load can reach 50 KG/cubic carrier day, than the active sludge BOD load of the same volume 5-10 times more, through throwing with a small amount, can greatly increased the microorganism total amount that the system can bear.
Compare current sewage treatment integration equipment, this device degradation efficiency is higher, and current equipment microorganism source can only rely on the passive mode of microorganism in the inoculation mud, and this device is through initiatively throwing microorganism fungus agent for the environmental protection in to former system, can improve the interior microorganism quantity of pond in the short time, and PVA carrier 8 can have sufficient microorganism quantity to bear the weight of. Thereby realize not changing under the condition of the pond appearance, the microbial density of the stable growth in the system promotes greatly, and the speed of the biochemical degradation pollutant of system promotes, and the promotion of whole treatment effeciency makes less pond appearance can handle the sewage of great water yield.
For traditional activated sludge system through nitrify the mode of liquid backward flow to oxygen deficiency pond and take off total nitrogen, this device is because the unique foaming characteristic of PVA carrier 8, and its surface has many apertures, in good oxygen pond, its carrier surface contact dissolved oxygen is more, and for good oxygen environment, inside central point contact dissolved oxygen is less, for the oxygen deficiency state, consequently can realize in same biochemical pond synchronous nitrification denitrification denitrogenation, need not to nitrify the liquid backward flow, need not to set up the oxygen deficiency pond, simplifies the processing procedure greatly, improves the treatment effeciency.
Compared with the traditional activated sludge method integrated equipment, the device has no activated sludge inside and very little sludge formed by the stripping of the biological membrane, thereby greatly reducing the treatment cost of biochemical sludge and avoiding worrying about the problems of sludge bulking sludge floating and the like.
The foregoing are merely exemplary embodiments of the present invention, and no attempt is made to show structural details, features, or other details of the present invention in the form of a more detailed description, which is presented for the purpose of illustration only, the more detailed description being taken by way of example only, and the more detailed description being presented for the purpose of illustrating the principles of the invention as embodied in the form of a more complete and readily available computer-readable medium. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the applicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (5)
1. The utility model provides a fluidized bed biomembrane sewage treatment integrated device which characterized in that: the device comprises a dosing tank, a coagulating sedimentation tank, an anaerobic fluidized bed, an aerobic fluidized bed and a secondary sedimentation tank, wherein the bottom of the dosing tank is communicated with the bottom of the coagulating sedimentation tank, the top of the coagulating sedimentation tank is communicated with the top of the anaerobic fluidized bed, the bottom of the anaerobic fluidized bed is communicated with the bottom of the aerobic fluidized bed, the upper part of the aerobic fluidized bed is communicated with the upper part of the secondary sedimentation tank, inclined tube filler is arranged in the coagulating sedimentation tank and the secondary sedimentation tank, biological treatment modules are arranged in the anaerobic fluidized bed and the aerobic fluidized bed, each biological treatment module comprises an upper baffle, a lower baffle and a plurality of PVA carriers, the upper baffle is arranged on the upper parts of the aerobic fluidized bed and the anaerobic fluidized bed, the lower baffle is arranged on the lower parts of the aerobic fluidized bed and the anaerobic fluidized bed, the PVA carriers are filled between the upper baffle and the lower baffle, and the bottom of the coagulating sedimentation tank is provided with a coagulating sewage outlet, the bottom parts of the aerobic fluidized bed, the anaerobic fluidized bed and the secondary sedimentation tank are all connected with a sewage discharge pipe.
2. The integrated fluidized bed biological membrane sewage treatment device according to claim 1, wherein: a plurality of clapboards are arranged in the dosing tank.
3. The integrated fluidized bed biological membrane sewage treatment device according to claim 1, wherein: and a flow pushing device is arranged in the anaerobic fluidized bed and is arranged on one side of the lower baffle close to the upper baffle.
4. The integrated fluidized bed biological membrane sewage treatment device according to claim 1, wherein: an aeration device is arranged in the aerobic fluidized bed and is arranged on one side of the lower baffle plate close to the upper baffle plate.
5. The integrated fluidized bed biological membrane sewage treatment device according to claim 1, wherein: and a drain pipe is arranged on one side of the secondary sedimentation tank, which is far away from the aerobic fluidized bed.
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| CN202120569667.9U CN214360900U (en) | 2021-03-20 | 2021-03-20 | Fluidized bed biological membrane sewage treatment integrated device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114835340A (en) * | 2022-05-13 | 2022-08-02 | 中国科学院广州能源研究所 | Waste water treatment device and method for garbage compression transfer station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114835340A (en) * | 2022-05-13 | 2022-08-02 | 中国科学院广州能源研究所 | Waste water treatment device and method for garbage compression transfer station |
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Effective date of registration: 20230331 Address after: 510700 room 505, building 4, No.1, Tangdong Road, Lilian street, Huangpu District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Zhuangwei Environmental Protection Technology Co.,Ltd. Address before: 510700 room 2203, No. 6, junjin street, Huangpu District, Guangzhou City, Guangdong Province (office only) Patentee before: Guangdong Chuangshi Environmental Technology Co.,Ltd. Patentee before: Shenzhen Qianhai Bairun Environmental Protection Technology Co.,Ltd. |