CN214528574U - Sewage treatment equipment with catalytic synergistic effect of advanced catalytic oxidation biomembrane - Google Patents
Sewage treatment equipment with catalytic synergistic effect of advanced catalytic oxidation biomembrane Download PDFInfo
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- CN214528574U CN214528574U CN202022587421.2U CN202022587421U CN214528574U CN 214528574 U CN214528574 U CN 214528574U CN 202022587421 U CN202022587421 U CN 202022587421U CN 214528574 U CN214528574 U CN 214528574U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses sewage treatment equipment with catalytic synergistic effect of an advanced catalytic oxidation biomembrane, which comprises an advanced catalytic oxidation reactor at the bottom, a biomembrane reactor at the top, a sludge sedimentation tank at the middle part and the like; wherein, sewage in the advanced catalytic oxidation reactor is pumped to the top of the biomembrane reactor by a pump and is injected into the biomembrane reactor in a spraying mode, the sludge sedimentation tank collects sludge falling off from the biomembrane reactor and discharges the sludge regularly, and meanwhile, water flows to the advanced catalytic oxidation reactor at the bottom by gravity through a pipeline to form circulating cooperative treatment. The advanced catalytic oxidation biomembrane catalytic synergistic treatment technology for sewage provided by the invention can simultaneously utilize hydroxyl radicals generated by advanced catalytic oxidation to degrade high-difficulty organic pollutants, can also play a role in reducing ammonia nitrogen, total phosphorus and total nitrogen by biomembrane catalysis, and can synergistically treat various kinds of sewage with high efficiency, no secondary pollution and low operation cost.
Description
Technical Field
The invention relates to the technical field of wastewater treatment in environmental protection, in particular to a sewage treatment method and equipment with the catalysis synergistic effect of an advanced catalytic oxidation biological membrane.
Background
In order to improve the prevention and control of water pollution, protect water ecology, guarantee drinking water safety, maintain public health and promote ecological civilization construction, China has developed the water pollution prevention and control law of the people's republic of China. Nineteen parties put forward a struggle goal of 2035 years of 'fundamental improvement of ecological environment and basic realization of beautiful Chinese goals', and a direction is indicated for water ecological environment protection in a period of the future. The Xi jinping ecological civilization thought established by the national ecological environment protection meeting in 2018 provides direction guidance and action guidance for promoting ecological civilization construction, strengthening ecological environment protection, and preventing and treating attack and hardness war by pollution. The river basin protection work is highly emphasized in the middle of the party and the state institute, and the height of a national great strategy is increased for two mother rivers, namely the Yangtze river and the yellow river. Xi jinping the general notes provide guidance for basin governance by speaking in national ecological environment protection meeting, Yangtze river economic zone development seating meeting, yellow river basin ecological protection and high quality development seating meeting.
Meanwhile, the department of ecological environment and the department of agricultural rural area issue a notice (soil-linked [ 2018 ] No. 143) about issuing an action plan of agricultural rural pollution treatment attack and solidness, which is issued by the department of ecological environment and the department of agricultural rural area, continuously promote distributed sewage treatment in rural areas and other areas, and play a role in reducing pollutant emission and improving rural water environment. Currently, conventional techniques for distributed domestic sewage treatment include: three-grid septic tanks, artificial wetlands, bio-contact oxidation processes, activated sludge processes, Membrane Bioreactors (MBR), etc. (table 1). At present, the treatment process of rural domestic sewage is combined by 2 or more treatment unit technologies, but the treatment process is difficult to stably reach the first-class A standard of Integrated wastewater discharge Standard (GB8978-2002), and has the defects of large floor area, high construction cost, high operation cost, long treatment time period and the like.
As shown in Table II, the core of these technology combinations is the degradation of contaminants by biological methods. Generally, the conventional biological method for degrading water pollutants has the problems of long period, slow reaction time, more sludge and the like, and is particularly difficult to degrade for some organic pollutants.
Along with the increasing demand of ecological environment protection, the demand of the distributed sewage treatment technology with high efficiency, rapidness, low cost and low maintenance is increased, and the patent discloses an advanced catalytic oxidation biological membrane catalysis integrated sewage treatment technology.
Table 1 distributed domestic sewage treatment unit prior art parameter table
Table 2 comparative analysis table for common distributed domestic sewage treatment process
Disclosure of Invention
The invention aims to provide sewage treatment equipment with the catalysis synergistic effect of an advanced catalytic oxidation biomembrane, and the sewage advanced catalytic oxidation-biomembrane catalysis synergistic treatment technology provided by the invention can simultaneously utilize hydroxyl free radicals generated by advanced catalytic oxidation to degrade high-difficulty organic pollutants, can also play a role in reducing ammonia nitrogen, total phosphorus and total nitrogen by biomembrane catalysis, and can treat various kinds of sewage with synergistic efficiency, no secondary pollution and low operation cost.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention also discloses sewage treatment equipment with the catalysis synergistic effect of the advanced catalytic oxidation biomembrane, which comprises the advanced catalytic oxidation reactor arranged at the bottom, the biomembrane reactor arranged at the upper part of the advanced catalytic oxidation reactor and a sludge sedimentation tank arranged between the advanced catalytic oxidation reactor and the biomembrane reactor, wherein a spraying device is arranged at the top of the biomembrane reactor and is connected with the advanced catalytic oxidation reactor through a pipeline, a sludge discharge port is arranged at the lower part of the sludge sedimentation tank, a water return port is arranged at the upper part of the sludge sedimentation tank, the water return port is connected with a water inlet of the advanced catalytic oxidation reactor through a pipeline, the water inlet is also connected with a water storage tank through a pipeline, and a water suction pump is arranged on the pipeline.
Further, the advanced catalytic oxidation reactor comprises an ultrasonic catalytic oxidation reactor, a photocatalytic oxidation reactor, a piezoelectric catalytic oxidation reactor or a combination of the two or the three, or is a fixed bed reactor or a fluidized bed reactor.
Furthermore, the biofilm reactor is a flowing biofilm reactor constructed by a biological carrier material and is formed by arranging and fixing the biological carrier material; the biological carrier material is porous filler easy for biomembrane growth, and comprises PE, PAN, carbon fiber, modified carbon material and ceramic coating material.
Further, the advanced catalytic oxidation reactor comprises an advanced catalytic oxidation catalyst, and the advanced catalytic oxidation catalyst comprises zinc oxide, titanium dioxide semiconductor nano-catalyst, ferroelectric and piezoelectric nano-catalytic material.
The invention also discloses a sewage treatment method with the catalysis synergistic effect of the advanced catalytic oxidation biomembrane, which comprises the advanced catalytic oxidation reactor arranged at the bottom, the biomembrane reactor arranged at the upper part of the advanced catalytic oxidation reactor, and a sludge sedimentation tank arranged between the advanced catalytic oxidation reactor and the biomembrane reactor; wherein, the sewage in the advanced catalytic oxidation reactor is pumped to the top of the biomembrane reactor by a pump and is injected into the biomembrane reactor by a spraying mode, the sludge sedimentation tank is used for collecting the sludge dropped off from the biomembrane reactor and discharging the sludge regularly, and meanwhile, the water flows to the advanced catalytic oxidation reactor at the bottom by gravity through a pipeline to form the circulating cooperative treatment. The method for treating various kinds of sewage by the advanced catalytic oxidation biomembrane catalysis can degrade high-difficulty organic pollutants by using hydroxyl radicals generated by the advanced catalytic oxidation, can exert the excellent reduction effect of biomembrane catalysis on ammonia nitrogen, total phosphorus and total nitrogen, and can treat various kinds of sewage with high efficiency, no secondary pollution and low operation cost.
Preferably, in the method, the advanced catalytic oxidation reactor is one or a combination of more than two of an ultrasonic catalytic oxidation reactor, a photocatalytic oxidation reactor and a piezoelectric catalytic oxidation reactor.
Preferably, the advanced catalytic oxidation reactor in the method is a fixed bed reactor or a fluidized bed reactor.
Furthermore, the biofilm reactor in the method comprises a flowing biofilm reactor constructed by a biological carrier material, and the biofilm reactor is formed by arranging and fixing the biological carrier material.
Further, the advanced catalytic oxidation reactor in the method comprises an advanced oxidation catalyst, and the advanced oxidation catalyst comprises (hybrid) zinc oxide, semi-conductive nano-catalyst such as (hybrid) titanium dioxide and the like or ferroelectric and piezoelectric nano-catalytic material.
Furthermore, in the method, the biological carrier material comprises PE, PAN, carbon fiber, modified carbon material, ceramic coating material and other porous fillers which are easy to grow the biological film, and the method has the advantage of easy growth of the biological film.
Furthermore, in the biofilm reactor in the method, sewage is sprayed onto the biological carrier/membrane from a spraying device at the top, and the water body is fully contacted with air in the free falling process to improve the dissolved oxygen content of the water body, so that the growth of the biofilm and the degradation of pollutants through catalytic oxidation are facilitated.
Drawings
FIG. 1 is a schematic structural diagram of an advanced catalytic oxidation biofilm catalysis integration device of the invention;
in the drawings are labeled: 1. the system comprises an advanced catalytic oxidation reactor 2, a biofilm reactor 3, a sludge sedimentation tank 4, a water storage tank 11, an ultrasonic component 12, an advanced oxidation catalyst 13, a water outlet 21, a spraying device 22, a flow channel type biofilm carrier 31, a sludge discharge outlet 32, a water return port 41, a first water suction pump 42 and a second water suction pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, but the technical solutions do not limit the scope of the present invention.
Referring to fig. 1, the advanced catalytic oxidation biofilm catalysis integration device provided by the invention comprises an advanced catalytic oxidation reactor 1 arranged at the bottom, a biofilm reactor 2 arranged at the top, and a sludge sedimentation tank 3 arranged at the middle; wherein, sewage in the advanced catalytic oxidation reactor 1 is pumped to the top of the biomembrane reactor 2 by the first water suction pump 41 and is injected into the biomembrane reactor 2 by the spraying device 21, the sludge settling pond 3 collects sludge dropped off from the biomembrane reactor 2 and discharges the sludge regularly, and meanwhile, water flows to the advanced catalytic oxidation reactor 1 at the bottom by gravity through a pipeline to form circulation cooperative treatment.
In one embodiment of the present invention, the advanced catalytic oxidation reactor may be one or a combination of two or more of an ultrasonic catalytic oxidation reactor, a photocatalytic oxidation reactor, and a piezoelectric catalytic oxidation reactor.
In one embodiment of the present invention, the advanced catalytic oxidation reactor comprises an ultrasonic assembly 11 and a solid catalyst 12; the lower part of the water storage tank is provided with a water outlet 13, the upper part of the water storage tank is provided with a water inlet 14, and the water inlet 14 is connected with the water storage tank 4 through a second water suction pump 42;
the sludge sedimentation tank 3 is provided with a sludge discharge port 31 and a water return port 32, wherein the water return port 32 is connected with the water inlet of the advanced catalytic oxidation reactor through a pipeline;
the top of the biomembrane reactor 2 is provided with a spraying device 21, and a flow channel type biomembrane carrier 22 is arranged inside the biomembrane reactor, and the carriers are fixed in the box body side by side through a sheet structure.
In one example of this embodiment, taking the ultrasonic catalytic oxidation reactor as an example, the size of the ultrasonic catalytic oxidation reactor is (length: 1 meter, width: 1 meter, height: 1 meter), the size of the biofilm reactor is (length: 1 meter, width: 1 meter, height: 1 meter), the size of the sludge settling tank is (length: 1 meter, width: 1 meter, height: 0.3 meter), and the total size of the integrated equipment is (length: 1 meter, width: 1 meter, height: 2.3 meter).
In this embodiment, the ultrasonic setting frequency of the ultrasonic catalytic oxidation reactor is 40kHz, the power is 2 groups of ultrasonic generators of 100w, the advanced oxidation catalyst is selected from a supported nano titanium dioxide ultrasonic catalyst, the size of the supported nano titanium dioxide ultrasonic catalyst is a prototype porous sheet structure (the diameter is 28mm, the thickness is 1mm), and the adding amount of the advanced oxidation catalyst is 1 kg.
In this embodiment, 4 nozzles are provided on the top of the biofilm reactor, and water can be sprayed on the top and flow down on the biological carrier. Activated carbon fibers are selected as a biological carrier material and are fixed in the box body side by side through a sheet structure, the gap interval of each sheet of biological carrier material is 1cm, the growth of a biological membrane on the biological carrier is facilitated, and the biological membrane is also favorable for degrading and reducing organic matters.
The domestic sewage in an industrial area is selected to test the efficacy of the advanced catalytic oxidation biomembrane catalysis integrated equipment, and the domestic sewage is circulated in the integrated equipment for 14 days at a circulation flow rate of 20L/min. The biofilm can be successfully grown on the surface of the biological carrier, and the thickness of the biofilm is about 2mm through observation of the surface of the biological carrier. Comparative experiments were performed as follows:
a: 1 ton of the primarily filtered domestic sewage is taken, the ultrasonic catalytic oxidation reactor is not started, the circulation work is carried out for 2 hours, and the effluent quality is tested.
B: 1 ton of the primarily filtered domestic sewage is taken, the ultrasonic catalytic oxidation reactor is started, the circulating pump is not started, namely the sewage does not pass through the biomembrane reactor, the operation is carried out for 2 hours, and the effluent quality is tested.
C: 1 ton of the primarily filtered domestic sewage is taken, the ultrasonic catalytic oxidation reactor is started, the circulating pump is started, the sewage passes through the biomembrane reactor, the operation is carried out for 2 hours, and the effluent quality is tested.
Table one: garbage press filtrate processing data (unit: mg/L)
Therefore, the advanced catalytic oxidation-biomembrane catalytic synergistic treatment process can deeply degrade COD, BOD, ammonia nitrogen, total phosphorus and total nitrogen without introducing other chemical agents, has good synergistic treatment effect, can treat domestic sewage to reach the standard of first-grade A in a very short time, and has various excellent characteristics of convenience in operation, simple equipment, easiness in maintenance, low maintenance cost and the like.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (5)
1. The utility model provides a sewage treatment device of advanced catalytic oxidation biomembrane catalysis synergism which characterized in that: including set up in the senior catalytic oxidation reactor of bottom, set up in biofilm reactor on senior catalytic oxidation reactor upper portion and set up in sludge sedimentation tank between senior catalytic oxidation reactor and the biofilm reactor, biofilm reactor's top is provided with spray set, spray set pass through the pipeline with senior catalytic oxidation reactor is connected, sludge sedimentation tank's lower part is equipped with the mud discharge port, and upper portion is equipped with the return water mouth, the return water mouth pass through the pipeline with senior catalytic oxidation reactor's water inlet is connected, the water inlet still is connected with the tank through the pipeline, is equipped with the suction pump on this pipeline.
2. The advanced catalytic oxidation biofilm catalysis synergistic sewage treatment device of claim 1, wherein: the advanced catalytic oxidation reactor comprises one or the combination of more than two of an ultrasonic catalytic oxidation reactor, a photocatalytic oxidation reactor and a piezoelectric catalytic oxidation reactor.
3. The advanced catalytic oxidation biofilm catalysis synergistic sewage treatment device of claim 1, wherein: the biofilm reactor is a flowing biofilm reactor constructed by a biological carrier material and is formed by arranging and fixing the biological carrier material.
4. The advanced catalytic oxidation biofilm catalyzed cooperative wastewater treatment plant of claim 1, wherein said advanced catalytic oxidation reactor comprises an ultrasonic catalytic oxidation reactor, a photocatalytic oxidation reactor, a piezoelectric catalytic oxidation reactor, or a combination thereof.
5. The advanced catalytic oxidation biofilm catalysis synergistic wastewater treatment plant of claim 1, wherein said advanced catalytic oxidation reactor comprises a fixed bed reactor or a fluidized bed reactor.
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| CN202022587421.2U CN214528574U (en) | 2020-11-10 | 2020-11-10 | Sewage treatment equipment with catalytic synergistic effect of advanced catalytic oxidation biomembrane |
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| CN202022587421.2U CN214528574U (en) | 2020-11-10 | 2020-11-10 | Sewage treatment equipment with catalytic synergistic effect of advanced catalytic oxidation biomembrane |
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