CN111547867A - Deodorization sewage treatment system and deodorization method - Google Patents
Deodorization sewage treatment system and deodorization method Download PDFInfo
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- CN111547867A CN111547867A CN202010549046.4A CN202010549046A CN111547867A CN 111547867 A CN111547867 A CN 111547867A CN 202010549046 A CN202010549046 A CN 202010549046A CN 111547867 A CN111547867 A CN 111547867A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/40—Organic compounds containing sulfur
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
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Abstract
The invention discloses a deodorization sewage treatment system, which comprises a biochemical pool, wherein a microorganism deodorization system is arranged in the biochemical pool, the microorganism deodorization system comprises a microorganism reinforced culture device and a biological agent supplement device, a deodorization microorganism filler is arranged in the microorganism reinforced culture device, and the deodorization microorganism filler degrades and decomposes odor organic matters in sewage in the biochemical pool so as to avoid the generation and overflow of odor gas in the sewage; the deodorization sewage treatment system utilizes the deodorization biological strains to decompose organic substances, organic sulfides, organic nitrogen and the like which generate foul gas in the sewage, eliminates the foul substances from the source, improves the treatment efficiency and treatment capacity of the foul gas, and reduces the corrosion of the foul gas to equipment and facilities.
Description
Technical Field
The invention belongs to the field of sewage treatment, and particularly relates to a deodorization sewage treatment system and a deodorization method.
Background
In the pipeline transportation process, the sewage is very easy to generate malodorous gases such as hydrogen sulfide and the like in an anaerobic and anoxic state for a long time, and the malodorous gases in the water are volatilized due to the stirring of pretreatment facilities of a sewage treatment plant. The main components of the odor are H2S and NH3, and in addition, a small amount of organic gas such as methyl mercaptan, methylamine, methyl sulfide, benzene, toluene, hydrocarbons and the like. Because malodorous gases are volatile, easy to disperse and strong in pungent odor, the malodorous gases may adversely affect the respiratory system, digestive system, endocrine system, nervous system and spirit of people, and even high concentrations of malodorous gases may cause acute poisoning and death.
In order to protect the work and the surrounding environment and reduce the secondary pollution of the sewage treatment plant to the surrounding environment. A deodorization system is required to be arranged to treat the waste gas generated in the sewage treatment process so as to reduce the concentration of volatile odor.
In the prior art, common methods for deodorization include a chemical deodorization method, an activated carbon adsorption method, a biological filter method, an ion air purification method and the like. These methods of deodorization are all to treat the odor after the odor is generated, and these methods all need to collect the odor, and in the treatment of odor, there are problems such as treatment is incomplete, odor leakage, and the like, and the required equipment is many, the workload is large, and the cost is high.
With the development of cities and the improvement of environmental requirements, the treatment of malodors in sewage treatment plants is more and more important. The above-mentioned treatment methods have not been satisfactory.
Disclosure of Invention
The invention aims to provide a deodorization sewage treatment system and a deodorization method, which utilize deodorization biological strains to decompose organic substances, organic sulfides, organic nitrogen and the like which generate foul gases in sewage, eliminate odoriferous substances from the source, improve the treatment efficiency and treatment capacity of the foul gases, and reduce the corrosion of the foul gases to equipment facilities.
According to the technical scheme, the deodorization sewage treatment system comprises a biochemical pool, a microorganism deodorization system is arranged in the biochemical pool and comprises a microorganism strengthening culture device and a biological agent supplement device, deodorization microorganism fillers are arranged in the microorganism strengthening culture device and degrade and decompose odor organic matters in sewage in the biochemical pool, and the odor gas in the sewage is prevented from being generated and overflowing.
Preferably, the microorganism reinforced culture device comprises a microorganism reinforced culture tank, the deodorizing microorganism filler is arranged in the microorganism reinforced culture tank, the deodorizing microorganism filler comprises a slow release filler and a carrier filler, and the slow release filler contains deodorizing microorganisms.
Preferably, the slow release filler is rod-shaped particles formed by mixing and pressing plant powder, kaolin and fine sand stone, the deodorizing microorganisms are uniformly mixed in the plant powder, the carrier filler is stone-shaped particles formed by mixing microporous ceramsite, stone and portland cement, and the proportion of the slow release filler to the carrier filler in the microorganism reinforced culture tank is 1: 1.
Preferably, the microorganism intensive culture tank comprises a tank body, wherein the tank body is provided with a water inlet, a water outlet, an air inlet and a chemical feeding port, the tank body is fixed at the bottom of an anoxic zone of the biochemical pool, and an aeration pipe in the anoxic zone penetrates into the tank body from the air inlet to supply oxygen for deodorizing microorganisms in the tank body; the feeding port is connected with a biological agent supplementing device, and the biological agent supplementing device feeds deodorizing biological agents into the tank body.
Preferably, the deodorization sewage treatment system further comprises a grid pond, a rotational flow grit chamber, a water collection and distribution well and a secondary sedimentation pond which are sequentially arranged, the biochemical pond is arranged in the rotational flow grit chamber and the water collection and distribution well, and the biochemical pond comprises an anaerobic zone, an anoxic zone and an aerobic zone which are sequentially arranged;
a nitrifying liquid return pipe is arranged between the aerobic zone and the anoxic zone, and part of nitrifying liquid in the aerobic zone returns to the anoxic zone; and a sludge return pipe is connected between the water collecting and distributing well and the anaerobic zone and returns part of sludge in the water collecting and distributing well to the anaerobic zone.
Preferably, a backflow water pipe and a sludge backflow pipe are arranged between the collecting and distributing well and the secondary sedimentation tank, and sewage and sludge separated in the secondary sedimentation tank respectively flow back to the collecting and distributing well;
the rear part of the collecting and distributing well is connected with a sludge treatment system and a sewage post-treatment system;
the sludge treatment system comprises a sludge concentration tank, a sludge storage tank, a sludge regulating tank and a sludge dewatering room which are sequentially connected to the rear part of the water collection and distribution well;
the sewage post-treatment system comprises a high-efficiency sedimentation tank, a rotary disc filter, a disinfection tank and a water outlet well which are sequentially connected to the rear part of the water collecting and distributing well.
A deodorization method of a deodorization sewage treatment system comprises the steps of firstly installing a microorganism reinforced culture tank at the bottom of an anoxic zone of a biochemical pool, and pre-filling slow-release filler and carrier filler in the microorganism reinforced culture tank; then, in 60 days after the sewage enters the anoxic zone, a certain amount of deodorant biological strains are added into the microorganism strengthening culture tank through a biological agent supplementing device every day, and meanwhile, a certain amount of tap water and a certain amount of special nutrient solution are added.
Preferably, the preparation method of the obligate nutrient solution is as follows: industrial glucose according to weight ratio: urea: preparing water mixed liquor with the concentration of 43 percent according to the proportion of 100:5:1 of monopotassium phosphate;
the microbial enhanced culture tank is fed with the deodorization biological strains every day within 60 days, wherein the strains are respectively as follows:
180L/d at 1-10 days, 160L/d at 11-20 days, 120L/d at 21-30 days, 80L/d at 31-40 days, 40L/d at 41-50 days, and 20L/d at 51-60 days;
the adding tap water amount to the microorganism strengthening culture tank every day within 60 days is respectively as follows:
900L/d at 1-10 days, 800L/d at 11-20 days, 600L/d at 21-30 days, 400L/d at 31-40 days, 200L/d at 41-50 days, and 100L/d at 51-60 days;
the amount of the special nutrient solution added into the microorganism intensified culture tank every day within 60 days is respectively as follows:
90L/d at day 1-10, 80L/d at day 11-20, 60L/d at day 21-30, 40L/d at day 31-40, 20L/d at day 41-50, and 10L/d at day 51-60.
Preferably, the adding method of the deodorizing biological strains, tap water and the special nutrient solution comprises the following steps:
s1, firstly, adding tap water with a certain amount in the same day into the biological agent supplementing device, and allowing the tap water to stand for at least two hours before adding to remove residual chlorine in the tap water;
s2, adding a certain amount of deodorizing biological strains and a special nutrient solution into tap water of a biological agent supplementing device, and activating for two hours;
s3, regulating the flow rate of a metering pump to 100-300L/h on a biological agent supplementing device, and slowly pumping the deodorant biological strains activated in the step S2 into a microorganism strengthening culture tank for two times respectively in the morning and afternoon;
when the deodorization biological strains are added, an aerator in an anoxic zone is started to continuously supply oxygen to the microorganism reinforced culture tank, and a stirrer on the biological agent supplement device is started to stir the deodorization biological strain mixed liquid in the biological agent supplement device.
Preferably, before the first addition of the deodorization biological strains, the activation aeration temperature of the anoxic zone is controlled to be 21-27 ℃, and the pH value of the biochemical pool is controlled to be 6-9; after the deodorizing biological strains are added for the first time, all the sludge return pipes and the nitrifying liquid return pipes are kept to be always conducted.
The deodorization sewage treatment system has the beneficial effects that:
1) the malodorous substances such as hydrogen sulfide, ammonia nitrogen and the like are removed from the source, and the corrosion of the odor to equipment and facilities is reduced.
2) Meanwhile, the removal rate of organic matters, nitrogen and phosphorus can be improved.
3) The sludge is stabilized into a humus state and does not generate secondary decay.
4) The method can be implemented and easily modified in the existing sewage plant, does not need to build new facilities, and greatly saves the occupied area; the investment and the operation cost are low.
5) And a pool body capping and odor collecting system is not needed, so that the capital construction cost and the operation cost are reduced, and the operation management is simple and convenient.
6) The biological deodorization filler release tank has no power requirement, and the equipment requirement is low.
The deodorization method of the deodorization sewage treatment system has the following beneficial effects that:
1) the deodorizing biological strain can decompose organic substances, organic sulfides, organic nitrogen and the like which generate malodorous gases, and radically solves the malodorous problem.
2) The deodorant and deodorant biological strain is simple to add, low in equipment requirement, low in cost and long in service time.
3) The deodorant biological strain is in a non-wet state, and can resist low temperature, high temperature, strong acid, strong alkali, bacteria, disinfection, hyperoxia (aerobic reproduction) and hypoxia (anaerobic reproduction).
4) The volume of the bacteria is larger than that of common pathogenic bacteria, the bacteria occupies space dominance, and the growth and the propagation of harmful bacteria are inhibited.
Drawings
FIG. 1 is a schematic view of a deodorization sewage treatment system according to the technical scheme of the invention,
FIG. 2 is a schematic diagram of the installation position of the microorganism enrichment culture tank in an anoxic zone.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
As shown in fig. 1 and 2, the deodorization sewage treatment system according to the technical scheme of the present invention includes a biochemical tank 3, a microbial deodorization system is disposed in the biochemical tank 3, and the microbial deodorization system includes a microbial intensive culture device and a biological agent supplement device 34. The microorganism strengthening culture device is internally provided with a deodorizing microorganism filler which degrades and decomposes the malodorous organic matters in the sewage in the biochemical pond, so that the generation and overflow of the malodorous gas in the sewage are avoided.
According to the technical scheme, the deodorizing microorganism packing is utilized to decompose organic substances, organic sulfides, organic nitrogen and the like which generate malodorous gases in the sewage in the biochemical pond, so that the malodorous substances such as hydrogen sulfide, ammonia nitrogen and the like are radically removed, and the problem of malodorous is solved. Meanwhile, the removal rate of organic matters, nitrogen and phosphorus can be improved, the sludge is stabilized to be in a humus state, and secondary decomposition is not generated. And the microorganism deodorization system is arranged in the biochemical pool 3, so that a pool body capping and odor collecting system are not needed, the capital cost and the operation cost are reduced, the operation management is simple and convenient, the odor collecting and conveying links in the traditional deodorization technology are omitted, the investment and operation cost is low, the operation is stable, the maintenance is simple and convenient, and the safety is high.
In the technical scheme, the microorganism reinforced culture device comprises a microorganism reinforced culture tank 30, the deodorizing microorganism filler is arranged in the microorganism reinforced culture tank 30 and comprises a slow release filler and a carrier filler, and the slow release filler contains deodorizing microorganisms. The slow-release filler has less loss and stronger durability, and the carrier filler is a permanent filler. The biological deodorization filler release tank has no power requirement and low cost.
In the technical scheme, the slow-release filler is rod-shaped particles formed by mixing and pressing plant powder, kaolin and fine sand stone. The deodorization microorganisms are uniformly mixed in the grass wood powder, the carrier filler is stone-like particles prepared by mixing microporous ceramsite, stones and portland cement, and the ratio of the slow-release filler to the carrier filler in the microorganism reinforced culture tank is 1: 1. The slow release filler and the carrier filler are mixed for use, so that an environment and a carrier are provided for the propagation of the deodorizing microbial strains. The slow release filler contains deodorizing microorganisms, plays a role in inoculation, and catalyzes and stimulates deodorizing microbial flora; enhancing the activity of the microorganism. The slow release filler has slow release performance, can continuously play a role in a strain mixed solution, and maintains the stable growth and activity of a deodorization microorganism system; the release loss of the slow release filler is not more than 5% per year, and the slow release filler needs to be replenished per year.
Referring to fig. 2, the microorganism enrichment culture tank 30 comprises a tank body, which is provided with a water inlet, a water outlet, an air inlet and a chemical feeding port, the tank body is fixed at the bottom of an anoxic zone 32 of the biochemical pool 3, and an aeration pipe connected with an aeration device 35 in the anoxic zone 32 penetrates into the tank body through the air inlet to supply oxygen for the deodorization microorganisms in the tank body. The feeding port is connected with a biological agent supplementing device 34, and the biological agent supplementing device 34 feeds deodorizing biological agents into the tank body regularly and quantitatively. The biological agent supplementing device 34 realizes automatic addition of the agent. The microorganism strengthening culture tank 30 has no power requirement, simple equipment, low cost, convenient management and low failure rate.
As shown in fig. 1 and 2, the deodorization sewage treatment system further comprises a grid tank 1, a rotational flow grit chamber 2, a collection and distribution well 4 and a secondary sedimentation tank 5 which are arranged in sequence. The biochemical tank 3 is arranged in the rotational flow grit chamber 2 and the water collecting and distributing well 4, and the biochemical tank 3 comprises an anaerobic zone 31, an anoxic zone 32 and an aerobic zone 33 which are arranged in sequence. A nitrifying liquid return pipe 15 is arranged between the aerobic zone 33 and the anoxic zone 32, and part of nitrifying liquid in the aerobic zone 33 returns to the anoxic zone 32. A sludge return pipe 14 is connected between the water collecting and distributing well 4 and the anaerobic zone 31, and part of sludge in the water collecting and distributing well 4 returns to the anaerobic zone 31. A backflow water pipe and a sludge backflow pipe are arranged between the collecting and distributing well 4 and the secondary sedimentation tank 5, and sewage and sludge separated in the secondary sedimentation tank 5 respectively flow back to the collecting and distributing well 4. The sludge amount and the water amount are distributed to a sludge treatment system and a sewage post-treatment system which are connected with the rear part of the collecting and distributing well 4 through the collecting and distributing well 4. The sludge treatment system comprises a sludge concentration tank 6, a sludge storage tank 6, a sludge adjusting tank 8 and a sludge dewatering room 9 which are sequentially connected with the rear part of the water collecting and distributing well 4. The sewage post-treatment system comprises a high-efficiency sedimentation tank 10, a rotary disc filter 11, a disinfection tank 12 and a water outlet well 13 which are sequentially connected with the rear part of the collecting and distributing well 4. Above-mentioned technical scheme, completion that can be complete is handled sewage, mud, improves sewage treatment's thoroughness, avoids sewage to the environment production secondary pollution, the environmental protection.
A deodorization method of a deodorization sewage treatment system comprises the steps of firstly installing a microorganism reinforced culture tank 30 at the bottom of an anoxic zone 32 of a biochemical pool 3, and pre-filling a slow-release filler and a carrier filler in the microorganism reinforced culture tank 30. Then, within 60 days after the sewage enters the anoxic zone 32, a certain amount of deodorant biological strains are added into the microorganism strengthening culture tank 30 through the biological microbial inoculum supplementing device 34 every day, and meanwhile, a certain amount of tap water and a certain amount of special nutrient solution are added.
The preparation method of the special nutrient solution comprises the following steps: industrial glucose according to weight ratio: urea: the potassium dihydrogen phosphate is mixed with water at a concentration of 43% at a ratio of 100:5: 1. Taking 10L of the special nutrient solution as an example, the method comprises the following steps: a. respectively adding 6.6kg of industrial glucose, 0.75kg of urea and 0.3kg of monopotassium phosphate into a nutrient solution preparation barrel; b. injecting tap water into the nutrient solution preparation barrel until the total volume is 10L; c. stirring to dissolve completely.
The amounts of the deodorizing biological species, the tap water and the obligate nutrient solution added into the microorganism-enhanced culture tank every day within 60 days are respectively shown in table 1 below:
table 1:
| time of day | Deodorization biological bacterial (L/d) | Special nutrient solution (L/d) | Tap water (L/d) |
| Day 1 to |
180 | 90 | 900 |
| |
160 | 80 | 800 |
| Day 21 to |
120 | 60 | 600 |
| |
80 | 40 | 400 |
| Day 41-50 | 40 | 20 | 200 |
| 51 to 60 days | 20 | 10 | 100 |
The adding method of the deodorizing biological strain, tap water and the special nutrient solution comprises the following steps:
s1, firstly, adding tap water with a certain amount in the same day into the biological agent supplementing device, and allowing the tap water to stand for at least two hours before adding to remove residual chlorine in the tap water;
s2, adding a certain amount of deodorizing biological strains and a special nutrient solution into tap water of a biological agent supplementing device, and activating for two hours;
s3, regulating the flow rate of a metering pump to 100-300L/h on a biological agent supplementing device, and slowly pumping the deodorant biological strains activated in the step S2 into a microorganism strengthening culture tank for two times respectively in the morning and afternoon;
when the deodorization biological strains are added, an aerator in an anoxic zone is started to continuously supply oxygen to the microorganism reinforced culture tank, and a stirrer on the biological agent supplement device is started to stir the deodorization biological strain mixed liquid in the biological agent supplement device.
It is worth noting that: before the beginning of the first addition of the deodorization biological strains, controlling the activation aeration temperature of an anoxic zone to be 21-27 ℃, and controlling the pH value of a biochemical pool to be 6-9; after the deodorizing biological strains are added for the first time, all the sludge return pipes and the nitrifying liquid return pipes are kept to be always conducted.
According to the deodorization sewage treatment system and the deodorization method, a method of putting a whole-process microorganism reinforced culture tank in sewage mixed liquid is utilized, so that deodorization microorganisms in the sewage mixed liquid are subjected to reinforced culture and proliferation, and the characteristics of deodorization microorganisms, such as capability of degrading odor pollutants, rapidness in propagation, strong vitality, large volume and strong organic matter decomposition capability, are utilized, so that a good deodorization effect is achieved, the problem of peculiar smell of a sewage plant is solved, and the water treatment effect is improved.
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by one of ordinary skill in the art and related arts based on the embodiments of the present invention without any creative effort, shall fall within the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.
Claims (10)
1. The utility model provides a deodorant sewage treatment system, includes biochemical pond, its characterized in that, be provided with microorganism deodorization system in the biochemical pond, microorganism deodorization system is including microorganism intensive culture device and biological agent replenishing device, be provided with deodorization microbial filler in the microorganism intensive culture device, deodorization microbial filler degrades and decomposes the foul smell organic matter in to biochemical pond sewage, avoids the production and the spill over of foul smell gas in the sewage.
2. The deodorization sewage treatment system according to claim 1, wherein the microorganism reinforced culture device comprises a microorganism reinforced culture tank, the deodorization microorganism filler is arranged in the microorganism reinforced culture tank, the deodorization microorganism filler comprises a slow release filler and a carrier filler, and the slow release filler contains deodorization microorganisms.
3. The deodorization sewage treatment system according to claim 2, wherein the slow release filler is rod-shaped particles formed by mixing and pressing plant powder, kaolin and fine sand, the deodorization microorganisms are uniformly mixed in the plant powder, the carrier filler is stone-shaped particles formed by mixing microporous ceramsite, stone and portland cement, and the proportion of the slow release filler to the carrier filler in the microorganism reinforced culture tank is 1: 1.
4. The deodorization sewage treatment system as recited in claim 2 wherein the microorganism-enhanced culture tank comprises a tank body, the tank body is provided with a water inlet, a water outlet, an air inlet and a chemical feeding port, the tank body is fixed at the bottom of the anoxic zone of the biochemical tank, and an aeration pipe in the anoxic zone penetrates into the tank body from the air inlet to supply oxygen for the deodorization microorganisms in the tank body; the feeding port is connected with a biological agent supplementing device, and the biological agent supplementing device feeds deodorizing biological agents into the tank body.
5. The deodorization sewage treatment system as recited in claim 1 further comprising a grid basin, a cyclone grit basin, a water collection and distribution well and a secondary sedimentation basin arranged in sequence, wherein the biochemical basin is arranged in the cyclone grit basin and the water collection and distribution well, and comprises an anaerobic zone, an anoxic zone and an aerobic zone arranged in sequence;
a nitrifying liquid return pipe is arranged between the aerobic zone and the anoxic zone, and part of nitrifying liquid in the aerobic zone returns to the anoxic zone; and a sludge return pipe is connected between the water collecting and distributing well and the anaerobic zone and returns part of sludge in the water collecting and distributing well to the anaerobic zone.
6. The deodorization sewage treatment system as recited in claim 5 wherein a return pipe and a sludge return pipe are provided between the collection and distribution well and the secondary sedimentation tank, and the sewage and sludge separated in the secondary sedimentation tank are respectively returned to the collection and distribution well;
the rear part of the collecting and distributing well is connected with a sludge treatment system and a sewage post-treatment system;
the sludge treatment system comprises a sludge concentration tank, a sludge storage tank, a sludge regulating tank and a sludge dewatering room which are sequentially connected to the rear part of the water collection and distribution well;
the sewage post-treatment system comprises a high-efficiency sedimentation tank, a rotary disc filter, a disinfection tank and a water outlet well which are sequentially connected to the rear part of the water collecting and distributing well.
7. A deodorization method of a deodorization sewage treatment system is characterized in that a microorganism reinforced culture tank is installed at the bottom of an anoxic zone of a biochemical pool, and a slow release filler and a carrier filler are pre-filled in the microorganism reinforced culture tank; then, in 60 days after the sewage enters the anoxic zone, a certain amount of deodorant biological strains are added into the microorganism strengthening culture tank through a biological agent supplementing device every day, and meanwhile, a certain amount of tap water and a certain amount of special nutrient solution are added.
8. The deodorization method for deodorization sewage treatment system according to claim 7, wherein the preparation method of the special nutrient solution comprises: industrial glucose according to weight ratio: urea: preparing water mixed liquor with the concentration of 43 percent according to the proportion of 100:5:1 of monopotassium phosphate;
the microbial enhanced culture tank is fed with the deodorization biological strains every day within 60 days, wherein the strains are respectively as follows:
180L/d at 1-10 days, 160L/d at 11-20 days, 120L/d at 21-30 days, 80L/d at 31-40 days, 40L/d at 41-50 days, and 20L/d at 51-60 days;
the adding tap water amount to the microorganism strengthening culture tank every day within 60 days is respectively as follows:
900L/d at 1-10 days, 800L/d at 11-20 days, 600L/d at 21-30 days, 400L/d at 31-40 days, 200L/d at 41-50 days, and 100L/d at 51-60 days;
the amount of the special nutrient solution added into the microorganism intensified culture tank every day within 60 days is respectively as follows:
90L/d at day 1-10, 80L/d at day 11-20, 60L/d at day 21-30, 40L/d at day 31-40, 20L/d at day 41-50, and 10L/d at day 51-60.
9. The deodorization method for a deodorization sewage treatment system as recited in claim 7 wherein the adding method of the deodorization biological species, tap water and the obligate nutrient solution is:
s1, firstly, adding tap water with a certain amount in the same day into the biological agent supplementing device, and allowing the tap water to stand for at least two hours before adding to remove residual chlorine in the tap water;
s2, adding a certain amount of deodorizing biological strains and a special nutrient solution into tap water of a biological agent supplementing device, and activating for two hours;
s3, regulating the flow rate of a metering pump to 100-300L/h on a biological agent supplementing device, and slowly pumping the deodorant biological strains activated in the step S2 into a microorganism strengthening culture tank for two times respectively in the morning and afternoon;
when the deodorization biological strains are added, an aerator in an anoxic zone is started to continuously supply oxygen to the microorganism reinforced culture tank, and a stirrer on the biological agent supplement device is started to stir the deodorization biological strain mixed liquid in the biological agent supplement device.
10. The deodorization method of a deodorization sewage treatment system as recited in claim 7 wherein before the first addition of the deodorization biological species, the temperature of the anoxic zone is controlled to be 21-27 ℃ for activating aeration, and the pH of the biochemical tank is controlled to be 6-9; after the deodorizing biological strains are added for the first time, all the sludge return pipes and the nitrifying liquid return pipes are kept to be always conducted.
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