CN218910187U - Deodorization system for vertical airtight composting reactor - Google Patents

Abstract

The utility model discloses a deodorizing system for a vertical closed composting reactor, which comprises an odor collecting fan, a cooling unit, a three-stage spray deodorizing unit and a deodorizing wastewater treatment unit, wherein the three-stage spray deodorizing unit comprises a first-stage spray tower, a second-stage spray tower and a third-stage spray tower which are sequentially communicated through air pipes; according to the utility model, the cooling unit is used for cooling high Wen Chouqi and spray water in the first-stage spray tower, so that the high dissolving capacity of soluble odor in water is continuously ensured, the diffusion speed of the odor is reduced, the three-stage spray deodorization unit is used for fully absorbing the easily water-soluble odor components such as ammonia in the odor, the running cost of odor purification is further reduced, the deodorization wastewater treatment unit is used for realizing the updating and recycling of the deodorization wastewater, and the secondary pollution of the deodorization process to the environment is avoided.

Description

Deodorization system for vertical airtight composting reactor

Technical Field

The utility model relates to the technical field of fecal fermentation deodorization, in particular to a deodorization system for a vertical closed composting reactor.

Background

Composting is a mainstream technology for processing domestic and foreign livestock and poultry manure, and along with development of composting equipment, a vertical closed composting reactor has become the mainstream manure processing equipment of domestic livestock and poultry farms in recent years. The excrement is fermented in the vertical airtight composting reactor to generate the odor such as ammonia, methyl mercaptan, hydrogen sulfide and the like, and each reactor is provided with 1 spray tower for deodorization, but the deodorization effect is limited, the influence of the fermentation odor of the reactor on the periphery cannot be reduced, and odor complaints are caused. In view of the characteristics of fermentation odor in the reactor, such as high temperature (the air outlet temperature is 65 ℃), high humidity and high concentration (the early self-grinding monitoring data show that the comprehensive odor value can reach 72443 dimensionless), the purification treatment difficulty is high, and therefore, the requirements of the industrial deodorizing technology for economically and effectively purifying the fermentation odor of the vertical closed composting reactor are urgent.

The vertical airtight composting reactor is an airtight tank body, and the generated fermentation odor is convenient to collect intensively, and only one set of effective deodorizing system is needed to be configured. At present, the existing deodorizing systems all use a multi-stage absorption tower, a biological filter, a biological trickling filter and the like added with a deodorizing agent, so that the investment is high, the operation cost is high, the equipment is complex, the deodorizing system is uneconomical and applicable, and the deodorizing wastewater treatment, namely secondary pollution can be generated when deodorizing, is not considered, so that the deodorizing system is not beneficial to popularization.

Therefore, it is an important subject to be studied by those skilled in the art to design a deodorizing system for a vertical closed compost reactor, which can solve the above-mentioned problems.

Disclosure of Invention

Aiming at the problems that the existing deodorizing system adopts a multi-stage absorption tower, a biological filter, a biological trickling filter and the like added with a deodorizing agent, has high investment, high operation cost, complex equipment, secondary pollution and the like when deodorizing. The object of the present utility model is to solve the above-mentioned problems by providing a deodorizing system for a vertical closed composting reactor.

According to one aspect of the utility model, a deodorizing system for a vertical closed compost reactor is provided, comprising an odor collecting fan, a cooling unit, a three-stage spray deodorizing unit and a deodorizing wastewater treatment unit, wherein the three-stage spray deodorizing unit comprises a first-stage spray tower, a second-stage spray tower and a third-stage spray tower which are sequentially communicated through air pipes, a top demister, a stainless steel spiral quarter spray head, a polyhedral hollow ball filler and a bottom water tank are sequentially arranged inside the first-stage spray tower, the second-stage spray tower and the third-stage spray tower from top to bottom, an air outlet of the vertical closed compost reactor is communicated with an air inlet on the lower side surface of the first-stage spray tower through the air pipes, an air outlet on the top of the third-stage spray tower is communicated with a discharge chimney through the air pipes, the odor collecting fan is arranged between the vertical closed compost reactor and the first-stage spray tower or between the third-stage spray tower and the discharge chimney, the cooling unit is communicated with the first-stage spray tower through the pipes, and the deodorizing wastewater treatment unit is communicated with the first-stage spray tower, the second-stage spray tower and the third-stage spray tower through the pipes. The three-stage spray deodorization unit is a three-stage spray tower, and the spray tower consists of a top demister, a middle two-stage filler layer, a two-stage spray header and a bottom water tank. The top demister in the spray tower is used for blocking water vapor in the spray tower from entering the next stage of spray tower. Two layers of filling net layers and two stages of spray heads are arranged in the middle of the spray tower, and a plurality of surfaces of hollow sphere filling materials are added on each layer of the filling net for about 30 cm to 50cm. The spray heads select stainless steel spiral quarter spray heads, the number and arrangement of each layer of spray heads in the tower are required to be that the radiation surfaces for spraying water by the spray heads are required to be overlapped in a crossing way, the diameter of the whole spray tower is required to be covered, and the aim of ensuring that all odor is discharged after gas-liquid exchange with spray water is achieved; the upper and lower spray heads of the spray tower are required to be separated into independent water inlet pipes for water supply, so that the liquid-gas ratio of each stage of spray is ensured to be more than 1.5L/m < 3 >. The bottom water tank is required to be three high and one low at the bottom, the lowest point is a water outlet, and the gradient of three sides of the bottom of the spray tower is required to be more than 1%, so that saturated deodorizing waste water in the spray tower is conveniently discharged completely. Odor generated by fermentation in the vertical closed composting reactor is treated by the first-stage spray tower, the second-stage spray tower and the third-stage spray tower and then discharged through a discharge chimney. The deodorizing system cools high Wen Chouqi and spray water in the first-stage spray tower through the cooling unit, so that the high dissolving capacity of soluble odor in water is continuously ensured, and the diffusion speed of the odor is reduced; the three-stage spray deodorizing unit fully absorbs the odor components such as ammonia gas and the like in the odor, which are easy to dissolve in water, so that the running cost of odor purification is reduced; and the regeneration and the cyclic utilization of the deodorizing wastewater are realized through the deodorizing wastewater treatment unit, so that the secondary pollution to the environment in the deodorizing process is avoided.

In certain embodiments, the odor collection blower is a glass fiber reinforced plastic centrifugal blower. The glass fiber reinforced plastic centrifugal fan is used for guiding odor in the vertical closed composting reactor to enter the first-stage spray tower for treatment and cooling through an air pipe, then enter the second-stage spray tower and the third-stage spray tower for treatment in sequence, and the purified odor is discharged through the discharge chimney.

In some embodiments, the cooling unit comprises a cooling circulating water pump, a plate heat exchanger, a countercurrent air cooling tower and an automatic floating ball, wherein four pipelines are arranged on a plate of the plate heat exchanger, the four pipelines are a first hot water pipeline, a second hot water pipeline, a first cold water pipeline and a second cold water pipeline respectively, hot water in a water tank at the bottom of the first-stage spray tower enters the first hot water pipeline provided with the first-stage circulating water pump, the plate heat exchanger is communicated with the countercurrent air cooling tower through the second hot water pipeline, cooling water in the countercurrent air cooling tower enters the second cold water pipeline provided with the cooling circulating water pump, the first cold water pipeline is communicated with the first water inlet pipe, and the automatic floating ball is positioned at the bottom of the countercurrent air cooling tower. The plate heat exchanger is formed by stacking a series of metal plates with certain corrugated shapes, and the plates are provided with a first hot water pipeline, a second hot water pipeline, a first cold water pipeline and a second cold water pipeline. The water in the water tank at the bottom of the first-stage spray tower is changed into hot water after being exchanged with odor, the hot water enters the first hot water pipeline on the plate-type heat exchanger plate and is in countercurrent contact with the cooling water in the first cold water pipeline, namely, cold and hot water exchange is realized through multiple folding contacts of multi-layer cold and hot water pipeline laminates, so that the hot water in the water tank of the first-stage spray tower is changed into cold water, the cold water is pumped into the stainless steel spiral quarter spray head of the first-stage spray tower by the first-stage circulating water pump and falls back into the water tank at the bottom of the first-stage spray tower, the warmed cooling water enters the bottom of the countercurrent air cooling tower, is pumped into the water distributor at the top of the countercurrent air cooling tower by the cooling circulating water pump and is sprayed by the middle packing tower, and is in countercurrent contact with the fan at the top of the countercurrent air cooling tower, namely, cold and hot water exchange is realized and steam is generated after flowing, the steam takes away heat, and evaporation heat is realized, the cooled down cooling water enters the second cold water pipeline on the plate-type heat exchanger plate again, and the second cold water pipeline on the plate is subjected to next round heat exchange, and the water temperature in the water tank at the bottom of the first-stage is always lower than 40 ℃.

In some embodiments, the polyhedral hollow sphere filler has two layers, and a plurality of stainless steel spiral quarter spray heads are arranged above each layer of polyhedral hollow sphere filler. The purpose of setting up two-layer multiaspect hollow sphere filler is to increase vapour-liquid contact area, improves deodorant effect.

In some embodiments, the bottom water tank of the first-stage spray tower is communicated with the plate heat exchanger through a first hot water pipeline provided with a first-stage circulating water pump, after heat exchange is carried out with the plate heat exchanger, a first cold water pipeline on a plate heat exchanger plate is communicated with a stainless steel spiral quarter spray head of the first-stage spray tower through a first water inlet pipe, the stainless steel spiral quarter spray head of the second-stage spray tower is communicated with the bottom water tank of the second-stage spray tower through a second water inlet pipe provided with a second-stage circulating water pump, and the stainless steel spiral quarter spray head of the third-stage spray tower is communicated with the bottom water tank of the third-stage spray tower through a third water inlet pipe provided with a third-stage circulating water pump. The water in the water tank at the bottom of the first-stage spray tower is cooled by the cooling unit and then enters the two-stage stainless steel spiral quarter spray head through the first water inlet pipe to spray, the water sprayed by the spray head is exchanged with the high Wen Chouqi in a countercurrent way, the water fully absorbing the odor falls back to the water tank at the bottom, then enters the next round of cooling firstly-then spraying for deodorization, and the odor temperature is reduced by the vapor-liquid exchange while being purified by the first-stage spray tower. The cooled odor sequentially enters the second-stage spray tower and the third-stage spray tower through the air pipe by means of the pressure of the glass fiber reinforced plastic centrifugal fan, water in the bottom water tank of the second-stage spray tower enters the two-stage stainless steel spiral quarter spray head of the second-stage spray tower through the second water inlet pipe provided with the second-stage circulating water pump, water in the bottom water tank of the third-stage spray tower enters the two-stage stainless steel spiral quarter spray head of the third-stage spray tower through the third water inlet pipe provided with the third-stage circulating water pump, water sprayed out through the spray head is exchanged with cooled odor in a countercurrent mode, and the sprayed water fully absorbs the odor and then falls back to the bottom water tank to be circularly sprayed, so that further purification of high-temperature odor is realized.

In certain embodiments, the deodorizing wastewater treatment unit comprises a water exchange pump, an integrated wastewater treatment device, a reuse water tank, a reuse water valve, a circulating water inlet pipe and a drain pipe, wherein the bottom water tanks of the first-stage spray tower, the second-stage spray tower and the third-stage spray tower are communicated with the integrated wastewater treatment device through the drain pipe provided with the water exchange pump, the integrated wastewater treatment device is communicated with the reuse water tank through a pipeline, and the reuse water tank is communicated with the bottom water tanks of the first-stage spray tower, the second-stage spray tower and the third-stage spray tower through the circulating water inlet pipe provided with the reuse water valve. The water exchange pump is used for exchanging saturated deodorizing wastewater which is dissolved with a large amount of odor substances in each stage of spray towers, and enters the integrated sewage treatment equipment for purification through the drain pipe, and the purified water is temporarily stored in the reuse water tank. And as the water level of the water tank at the bottom of each stage of spray tower drops, the floating ball of the circulating water inlet pipe of the water tank at the bottom of the spray tower is opened, meanwhile, the reuse water valve of the reuse water tank is opened, purified water stored in the reuse water tank enters the water tank at the bottom of each stage of spray tower through the circulating water inlet pipe, the updating of the water in the water tank at the bottom of each stage of spray tower is completed, the next round of deodorization is performed, the deodorizing wastewater is purified and recycled, and no secondary pollution is generated.

In some embodiments, the first stage spray tower, the second stage spray tower and the third stage spray tower may or may not have a deodorant in the bottom water tanks, and the deodorant may be a microbial deodorant or a chemical deodorant. In daily operation, the first-stage spray tower, the second-stage spray tower and the third-stage spray tower all operate with clear water or microbial deodorant; the chemical deodorant is used when spray water cannot be continuously updated in emergency or when the deodorizing effect is required to be improved, the first-stage spray tower is clean water, the second-stage spray tower is chemical deodorant (alkali+oxidant), the third-stage spray tower is clean water or chemical deodorant (acidulant) and is mainly used for removing sulfur-containing odor, comprehensive odor can be more efficiently removed in a short time, and the acidulant is mainly used for absorbing ammonia in the odor and improving deodorizing efficiency.

The beneficial effects of the utility model are as follows:

the deodorizing system cools high Wen Chouqi and spray water in the first-stage spray tower through the cooling unit, so that the high dissolving capacity of soluble odor in water is continuously ensured, and the diffusion speed of the odor is reduced; the three-stage spray deodorizing unit fully absorbs the odor components such as ammonia gas and the like in the odor, which are easy to dissolve in water, so that the running cost of odor purification is reduced; and the regeneration and the cyclic utilization of the deodorizing wastewater are realized through the deodorizing wastewater treatment unit, so that the secondary pollution to the environment in the deodorizing process is avoided.

Drawings

FIG. 1 is a schematic diagram of a first embodiment of the present utility model;

fig. 2 is a schematic structural view of a second embodiment of the present utility model.

In the figure: 1. an odor collection fan; 2. a cooling unit; 3. a three-stage spray deodorizing unit; 4. a deodorizing wastewater treatment unit; 5. a first stage spray tower; 6. a first-stage circulating water pump; 7. a polyhedral hollow sphere filler; 8. stainless steel spiral quarter spray head; 9. a first water inlet pipe; 10. a demister; 11. a cooling circulating water pump; 12. a plate heat exchanger; 13. countercurrent air cooling tower; 14. automatic floating ball; 15. a second stage spray tower; 16. a second-stage circulating water pump; 17. a third stage spray tower; 18. a third-stage circulating water pump; 19. a discharge chimney; 20. a water exchange pump; 21. an integrated sewage treatment device; 22. a reuse water tank; 23. a reuse water valve; 24. an air pipe; 25. a circulating water inlet pipe; 26. a drain pipe; 27. a vertical closed composting reactor; 28. a first hot water pipe; 29. a second hot water pipe; 30. a first cold water pipe; 31. a second cold water pipe; 32. a second water inlet pipe; 33. and a third water inlet pipe.

Detailed Description

The present utility model will be described in detail with reference to the accompanying drawings.

The utility model and its embodiments are described below without limitation, and the actual embodiments are not limited thereto. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present utility model.

Example 1

Referring to fig. 1, the utility model provides a deodorizing system for a vertical closed composting reactor, which comprises an odor collecting fan 1, a cooling unit 2, a three-stage spray deodorizing unit 3 and a deodorizing wastewater treatment unit 4, wherein the three-stage spray deodorizing unit 3 comprises a first-stage spray tower 5, a second-stage spray tower 15 and a third-stage spray tower 17 which are sequentially communicated through an air pipe 24, a top demister 10, a stainless steel spiral quarter spray head 8, a polyhedral hollow ball filler 7 and a bottom water tank are sequentially arranged in the first-stage spray tower 5, the second-stage spray tower 15 and the third-stage spray tower 17 from top to bottom, an air outlet of the vertical closed composting reactor 27 is communicated with an air inlet end of the odor collecting fan 1 through the air pipe 24, an air outlet of the odor collecting fan 1 is communicated with an air inlet on the lower side surface of the first-stage spray tower 5, an air outlet on the top of the third-stage spray tower 17 is communicated with a discharge chimney 19 through the air pipe 24, the cooling unit 2 is communicated with the first-stage spray tower 5 through a pipeline, and the deodorizing wastewater treatment unit 4 is communicated with the first-stage spray tower 5, the second-stage spray tower 15 and the bottom water tank of the third-stage spray tower 17 through a pipeline. The three-stage spray deodorization unit 3 is a three-stage spray tower which consists of a top demister 10, a middle two-stage filler layer, a two-stage spray header and a bottom water tank. The top demister 10 in the spray tower is used for blocking water vapor in the spray tower from entering the next stage spray tower. Two layers of filling net layers and two-stage spray heads are arranged in the middle of the spray tower, and each layer of filling net is added with about 30-50cm of polyhedral hollow sphere filling 7. The spray heads select stainless steel spiral quarter spray heads 8, the number and arrangement of each layer of spray heads in the tower are required to be crossed and overlapped between the radiation surfaces of spray heads for spraying water, the diameter of the whole spray tower is required to be covered, and the aim is to ensure that all odor is discharged after gas-liquid exchange with spray water; the upper and lower spray heads of the spray tower are required to be separated into independent water inlet pipes for water supply, so that the liquid-gas ratio of each stage of spray is ensured to be more than 1.5L/m < 3 >. The bottom water tank is required to be three high and one low at the bottom, the lowest point is a water outlet, and the gradient of three sides of the bottom of the spray tower is required to be more than 1%, so that saturated deodorizing waste water in the spray tower is conveniently discharged completely. The odor generated by the fermentation in the vertical closed composting reactor 27 is discharged through the discharge chimney 19 after being treated by the first-stage spray tower 5, the second-stage spray tower 15 and the third-stage spray tower 17. The deodorizing system cools high Wen Chouqi and spray water in the first-stage spray tower 5 through the cooling unit 2, so that the high dissolving capacity of soluble odor in water is continuously ensured, and the diffusion speed of the odor is reduced; the three-stage spray deodorizing unit 3 fully absorbs the odor components such as ammonia gas and the like in the odor, which are easy to dissolve in water, so that the running cost of odor purification is reduced; and the regeneration and the cyclic utilization of the deodorizing wastewater are realized by the deodorizing wastewater treatment unit 4, so that the secondary pollution to the environment in the deodorizing process is avoided.

The odor collection fan 1 is a glass fiber reinforced plastic centrifugal fan. The glass fiber reinforced plastic centrifugal fan is used for guiding the odor in the vertical airtight composting reactor 27 to firstly enter the first-stage spray tower 5 for treatment and cooling through the air pipe 24, then sequentially enter the second-stage spray tower 15 and the third-stage spray tower 17 for treatment, and the purified odor is discharged through the discharge chimney 19.

The cooling unit 2 comprises a cooling circulating water pump 11, a plate heat exchanger 12, a countercurrent air cooling tower 13 and an automatic floating ball 14, four pipelines which are respectively a first hot water pipeline 28, a second hot water pipeline 29, a first cold water pipeline 30 and a second cold water pipeline 31 are arranged on the plate of the plate heat exchanger 12, hot water in a water tank at the bottom of the first-stage spray tower 5 enters the first hot water pipeline 28 provided with the first-stage circulating water pump 6, the plate heat exchanger 12 is in pipeline communication with the countercurrent air cooling tower 13 through the second hot water pipeline 29, cooling water in the countercurrent air cooling tower 13 enters the second cold water pipeline 31 provided with the cooling circulating water pump 11, the first cold water pipeline 30 is communicated with the first water inlet pipe 9, and the automatic floating ball 14 is positioned at the bottom of the countercurrent air cooling tower 13. The plate heat exchanger 12 is formed by stacking a series of metal plates having a corrugated shape, and the plates are provided with a first hot water pipe 28, a second hot water pipe 29, a first cold water pipe 30 and a second cold water pipe 31. The water in the bottom water tank of the first-stage spray tower 5 is changed into hot water after being exchanged with odor and is pumped into the first hot water pipeline 28 of the plate heat exchanger 12 by the first-stage circulating water pump 6, the cooling water in the water collecting tank at the bottom of the countercurrent air cooling tower 13 is pumped into the second cold water pipeline 31 of the plate heat exchanger 12 by the cooling circulating water pump 11, the cold water is not in direct contact with the hot water, but the heat exchange is realized by the multi-fold contact of the multi-layer cold and hot water pipeline lamination, so that the hot water in the bottom water tank of the first-stage spray tower 5 is cooled, the stainless steel spiral quarter spray nozzle 8 pumped into the first-stage spray tower 5 by the first-stage circulating water pump 6 is sprayed out to exchange gas and liquid with odor, and the cooling water in the second hot water pipeline 29 on the plate of the plate heat exchanger 12 is heated, the warmed cooling water enters the bottom of the countercurrent air cooling tower 13 again, is pumped into a water distributor at the top of the countercurrent air cooling tower 13 by a cooling circulating water pump 11 and is sprayed by an intermediate packing tower, and is in countercurrent contact with a fan at the top of the countercurrent air cooling tower 13 at the same time, so that gas heat exchange is realized, the heat quantity of the warmed cooling water becomes steam, the steam is pumped out by the fan at the top of the countercurrent air cooling tower 13 to take away heat, the re-cooling of the warmed cooling water is realized, the cooled cooling water enters a second cooling water pipeline 31 on a plate of the plate heat exchanger 12 again to perform the heat exchange of the next round, and if circulation is realized, the water temperature in a water tank at the bottom of the first-stage spray tower 5 can be ensured to be always lower than 40 ℃.

The polyhedral hollow ball filler 7 has two layers, and a plurality of stainless steel spiral quarter spray heads 8 are arranged above each layer of polyhedral hollow ball filler 7. The purpose of the two layers of multi-surface hollow ball filler 7 is to increase the vapor-liquid contact area to improve the deodorizing effect. The bottom water tank of the first-stage spray tower 5 is communicated with the plate heat exchanger 12 through a first hot water pipeline 28 provided with a first-stage circulating water pump 6, after heat exchange is carried out with the plate heat exchanger 12, a first cold water pipeline 30 on a plate of the plate heat exchanger 12 is communicated with the stainless steel spiral quarter spray head 8 of the first-stage spray tower 5 through a first water inlet pipe 9, the stainless steel spiral quarter spray head 8 of the second-stage spray tower 15 is communicated with the bottom water tank of the second-stage spray tower 15 through a second water inlet pipe 32 provided with a second-stage circulating water pump 16, and the stainless steel spiral quarter spray head 8 of the third-stage spray tower 17 is communicated with the bottom water tank of the third-stage spray tower 17 through a third water inlet pipe 33 provided with a third-stage circulating water pump 18. The water in the water tank at the bottom of the first-stage spray tower 5 firstly passes through the cooling unit 2 to be cooled, then enters the two-stage stainless steel spiral quarter spray head 8 through the first water inlet pipe 9 to be sprayed out, the water sprayed out through the spray head is subjected to countercurrent exchange with the high Wen Chouqi, the water after fully absorbing the odor falls back to the water tank at the bottom, then enters the next round of cooling firstly, then sprays and deodorizes, and the odor temperature is also reduced through vapor-liquid exchange while the odor is purified by the first-stage spray tower 5. The cooled odor sequentially enters the second-stage spray tower 15 and the third-stage spray tower 17 through the air pipe 24 by virtue of the pressure of the glass fiber reinforced plastic centrifugal fan, water in a water tank at the bottom of the second-stage spray tower 15 enters the two-stage stainless steel spiral quarter spray head 8 of the second-stage spray tower 15 through the second water inlet pipe 32 provided with the second-stage circulating water pump 16, water in a water tank at the bottom of the third-stage spray tower 17 enters the two-stage stainless steel spiral quarter spray head 8 of the third-stage spray tower 17 through the third water inlet pipe 33 provided with the third-stage circulating water pump 18, the sprayed water and the cooled odor are subjected to countercurrent exchange, and the sprayed water fully absorbs the odor and then falls back to the bottom water tank to be subjected to circulating spray, so that the high-temperature odor is further purified.

The deodorizing wastewater treatment unit 4 comprises a water exchange pump 20, an integrated wastewater treatment device 21, a reuse water tank 22, a reuse water valve 23, a circulating water inlet pipe 25 and a drain pipe 26, wherein the bottom water tanks of the first-stage spray tower 5, the second-stage spray tower 15 and the third-stage spray tower 17 are communicated with the integrated wastewater treatment device 21 through the drain pipe 26 provided with the water exchange pump 20, the integrated wastewater treatment device 21 is communicated with the reuse water tank 22 through a pipeline, and the reuse water tank 22 is communicated with the bottom water tanks of the first-stage spray tower 5, the second-stage spray tower 15 and the third-stage spray tower 17 through the circulating water inlet pipe 25 provided with the reuse water valve 23. The water exchange pump 20 is used for exchanging saturated deodorizing wastewater which is dissolved with a large amount of odor substances in each stage of spray towers, and enters the integrated sewage treatment equipment 21 for purification through the drain pipe 26, and the purified water is temporarily stored in the reuse water tank 22. As the water level of the water tank at the bottom of each stage of spray tower drops, the floating ball of the circulating water inlet pipe 25 of the water tank at the bottom of the spray tower is opened, meanwhile, the recycling water valve 23 of the recycling water tank 22 is opened, purified water stored in the recycling water tank 22 enters the water tank at the bottom of each stage of spray tower through the circulating water inlet pipe 25, the water in the water tank at the bottom of each stage of spray tower is updated, the next round of deodorization is performed, the deodorizing wastewater is purified and recycled, and no secondary pollution is generated.

Deodorant can be arranged or not in the water tanks at the bottoms of the first-stage spray tower 5, the second-stage spray tower 15 and the third-stage spray tower 17, and the deodorant is a microbial deodorant or a chemical deodorant. In daily operation, the first-stage spray tower 5, the second-stage spray tower 15 and the third-stage spray tower 17 all operate with clear water or microbial deodorant; the chemical deodorant is used when spray water cannot be continuously updated in emergency or when the deodorizing effect is required to be improved, the first-stage spray tower 5 is used as clean water, the second-stage spray tower 15 is used as chemical deodorant (alkali+oxidant), the third-stage spray tower 17 is used as clean water or chemical deodorant (acidulant), the alkali+oxidant is mainly used for removing sulfur-containing odor, the comprehensive odor can be more efficiently removed in a short time, and the acidulant is mainly used for absorbing ammonia in the odor, so that the deodorizing efficiency is improved.

The spray deodorization path of the first-stage spray tower 5 is as follows: the spray water is pumped into a first hot water pipeline 28 in a plate heat exchanger 12 through a first-stage circulating water pump 6 in a bottom water tank of a first-stage spray tower 5 and circulated cooling water in a countercurrent air cooling tower 13 are subjected to cold and heat exchange in the cold and hot water pipelines in the plate heat exchanger 12 respectively, cooled spray water enters an upper layer and a lower layer of stainless steel spiral quarter spray heads 8 of the first-stage spray tower 5 through a first water inlet pipe 9 and is subjected to countercurrent liquid-gas exchange with odor from bottom to top in a multi-surface hollow ball packing 7, so that the water fully absorbs the odor, the exchanged odor enters the bottom of a second-stage spray tower 15 through an air pipe 24 after passing through a demister 10 at the top of the first-stage spray tower 5, and the liquid after the gas-liquid exchange drops back into the bottom water tank of the first-stage spray tower 5 and then enters a cooling unit 2 through the first-stage circulating water pump 6; the cooling water after heat exchange with the water in the first-stage spray tower 5 in the plate heat exchanger 12 enters the countercurrent air cooling tower 13 through the cooling circulating water pump 11, gas heat exchange is carried out on the cooling water in the packing in the countercurrent air cooling tower 13, the heat of the cooling water is converted into water vapor and is discharged from the top of the countercurrent air cooling tower 13, cooling of the cooling water is further realized, and the cooling water continuously enters the plate heat exchanger 12 to continuously exchange heat with the water in the first-stage spray tower 5, if circulation is carried out.

The spray deodorization path of the second-stage spray tower 15 of the utility model is: the odor cooled by the cooling unit 2 is purified by the first-stage spray tower 5 and then continuously enters the second-stage spray tower 15, water or deodorant of a water tank at the bottom of the second-stage spray tower 15 is pumped into stainless steel spiral quarter spray heads 8 on the upper layer and the lower layer of the second-stage spray tower 15 by a second-stage circulating water pump 16 to be sprayed out, the sprayed spray water and the odor in the second-stage spray tower 15 are subjected to countercurrent gas-liquid exchange deodorization in the two layers of multi-surface hollow ball fillers 7, and thus the odor subjected to further deodorization continuously enters the third-stage spray tower 17 by an air pipe 24 after being blocked by a demister 10 on the top of the second-stage spray tower 15.

The spray deodorization path of the third-stage spray tower 17 of the utility model is as follows: the water tank at the bottom of the third-stage spray tower 17 pumps water or deodorizer enters the stainless steel spiral quarter spray head 8 through the third-stage circulating water pump 18, spray water sprayed out through the spray head and odor in the third-stage spray tower 17 are subjected to full gas-liquid exchange deodorization in the multi-surface hollow ball filler 7, and purified gas after being blocked by the demister 10 at the top of the third-stage spray tower 17 is introduced into the exhaust chimney 19 through the air pipe 24 and is exhausted into the air.

The spray water in the first-stage spray tower 5, the second-stage spray tower 15 and the third-stage spray tower 17 is clear water or microbial deodorant, so that good deodorizing effect can be achieved, frequent water replacement is needed, and when the spray water is saturated or the deodorant is consumed completely, the spray water needs to be replaced. The water in the bottom water tanks of the three spray towers 5, 15 and 17 is changed by starting the water exchange pump 20 through the time set by the control cabinet, the saturated deodorizing wastewater in the water tanks of the three spray towers is pumped into the integrated sewage treatment equipment 21 through the drain pipe 26 for purification treatment, the treated clean water is temporarily stored in the reuse water tank 22, the water level in the water tanks of the three spray towers is lowered after the water exchange pump 20 is started, the floating ball in the bottom water tank is opened, and the purified water automatically enters the water tanks of the bottom of the three spray towers from the reuse water tank 22 through the circulating water inlet pipe 25 and the reuse water valve 23, so that the water in the water tanks of the bottom of the three spray towers is changed, and the continuous deodorizing capability of the spray water is maintained.

Example 2

Referring to fig. 2, the utility model provides a deodorizing system for a vertical closed composting reactor, which comprises an odor collecting fan 1, a cooling unit 2, a three-stage spray deodorizing unit 3 and a deodorizing wastewater treatment unit 4, wherein the three-stage spray deodorizing unit 3 comprises a first-stage spray tower 5, a second-stage spray tower 15 and a third-stage spray tower 17 which are sequentially communicated through an air pipe 24, a top demister 10, a stainless steel spiral quarter spray head 8, a polyhedral hollow ball filler 7 and a bottom water tank are sequentially arranged in the first-stage spray tower 5, the second-stage spray tower 15 and the third-stage spray tower 17 from top to bottom, an air outlet of the vertical closed composting reactor 27 is communicated with an air inlet on the side surface of the lower part of the first-stage spray tower 5 through the air pipe 24, an air outlet on the top of the third-stage spray tower 17 is communicated with an air inlet end of the odor collecting fan 1 through the air pipe 24, and an air outlet end of the odor collecting fan 1 is communicated with an odor discharge chimney 19. The cooling unit 2 is communicated with the first-stage spray tower 5 through a pipeline, and the deodorizing wastewater treatment unit 4 is communicated with bottom water tanks of the first-stage spray tower 5, the second-stage spray tower 15 and the third-stage spray tower 17 through pipelines. The three-stage spray deodorization unit 3 is a three-stage spray tower which consists of a top demister 10, a middle two-stage filler layer, a two-stage spray header and a bottom water tank. The top demister 10 in the spray tower is used for blocking water vapor in the spray tower from entering the next stage spray tower. Two layers of filling net layers and two-stage spray heads are arranged in the middle of the spray tower, and each layer of filling net is added with about 30-50cm of polyhedral hollow sphere filling 7. The spray heads select stainless steel spiral quarter spray heads 8, the number and arrangement of each layer of spray heads in the tower are required to be crossed and overlapped between the radiation surfaces of spray heads for spraying water, the diameter of the whole spray tower is required to be covered, and the aim is to ensure that all odor is discharged after gas-liquid exchange with spray water; the upper and lower spray heads of the spray tower are required to be separated into independent water inlet pipes for water supply, so that the liquid-gas ratio of each stage of spray is ensured to be more than 1.5L/m < 3 >. The bottom water tank is required to be three high and one low at the bottom, the lowest point is a water outlet, and the gradient of three sides of the bottom of the spray tower is required to be more than 1%, so that saturated deodorizing waste water in the spray tower is conveniently discharged completely. The odor generated by the fermentation in the vertical closed composting reactor 27 is discharged through the discharge chimney 19 after being treated by the first-stage spray tower 5, the second-stage spray tower 15 and the third-stage spray tower 17. The deodorizing system cools high Wen Chouqi and spray water in the first-stage spray tower 5 through the cooling unit 2, so that the high dissolving capacity of soluble odor in water is continuously ensured, and the diffusion speed of the odor is reduced; the three-stage spray deodorizing unit 3 fully absorbs the odor components such as ammonia gas and the like in the odor, which are easy to dissolve in water, so that the running cost of odor purification is reduced; and the regeneration and the cyclic utilization of the deodorizing wastewater are realized by the deodorizing wastewater treatment unit 4, so that the secondary pollution to the environment in the deodorizing process is avoided.

The odor collection fan 1 is a glass fiber reinforced plastic centrifugal fan. The glass fiber reinforced plastic centrifugal fan is used for guiding the odor in the vertical airtight composting reactor 27 to firstly enter the first-stage spray tower 5 for treatment and cooling through the air pipe 24, then sequentially enter the second-stage spray tower 15 and the third-stage spray tower 17 for treatment, and the purified odor is discharged through the discharge chimney 19.

The cooling unit 2 comprises a cooling circulating water pump 11, a plate heat exchanger 12, a countercurrent air cooling tower 13 and an automatic floating ball 14, four pipelines which are respectively a first hot water pipeline 28, a second hot water pipeline 29, a first cold water pipeline 30 and a second cold water pipeline 31 are arranged on the plate of the plate heat exchanger 12, hot water in a water tank at the bottom of the first-stage spray tower 5 enters the first hot water pipeline 28 provided with the first-stage circulating water pump 6, the plate heat exchanger 12 is in pipeline communication with the countercurrent air cooling tower 13 through the second hot water pipeline 29, cooling water in the countercurrent air cooling tower 13 enters the second cold water pipeline 31 provided with the cooling circulating water pump 11, the first cold water pipeline 30 is communicated with the first water inlet pipe 9, and the automatic floating ball 14 is positioned at the bottom of the countercurrent air cooling tower 13. The plate heat exchanger 12 is formed by stacking a series of metal plates having a corrugated shape, and the plates are provided with a first hot water pipe 28, a second hot water pipe 29, a first cold water pipe 30 and a second cold water pipe 31. The water in the bottom water tank of the first-stage spray tower 5 is changed into hot water after being exchanged with odor and is pumped into the first hot water pipeline 28 of the plate heat exchanger 12 by the first-stage circulating water pump 6, the cooling water in the water collecting tank at the bottom of the countercurrent air cooling tower 13 is pumped into the second cold water pipeline 31 of the plate heat exchanger 12 by the cooling circulating water pump 11, the cold water is not in direct contact with the hot water, but the heat exchange is realized by the multi-fold contact of the multi-layer cold and hot water pipeline lamination, so that the hot water in the bottom water tank of the first-stage spray tower 5 is cooled, the stainless steel spiral quarter spray nozzle 8 pumped into the first-stage spray tower 5 by the first-stage circulating water pump 6 is sprayed out to exchange gas and liquid with odor, and the cooling water in the second hot water pipeline 29 on the plate of the plate heat exchanger 12 is heated, the warmed cooling water enters the bottom of the countercurrent air cooling tower 13 again, is pumped into a water distributor at the top of the countercurrent air cooling tower 13 by a cooling circulating water pump 11 and is sprayed by an intermediate packing tower, and is in countercurrent contact with a fan at the top of the countercurrent air cooling tower 13 at the same time, so that gas heat exchange is realized, the heat quantity of the warmed cooling water becomes steam, the steam is pumped out by the fan at the top of the countercurrent air cooling tower 13 to take away heat, the re-cooling of the warmed cooling water is realized, the cooled cooling water enters a second cooling water pipeline 31 on a plate of the plate heat exchanger 12 again to perform the heat exchange of the next round, and if circulation is realized, the water temperature in a water tank at the bottom of the first-stage spray tower 5 can be ensured to be always lower than 40 ℃.

The polyhedral hollow ball filler 7 has two layers, and a plurality of stainless steel spiral quarter spray heads 8 are arranged above each layer of polyhedral hollow ball filler 7. The purpose of the two layers of multi-surface hollow ball filler 7 is to increase the vapor-liquid contact area to improve the deodorizing effect. The bottom water tank of the first-stage spray tower 5 is communicated with the plate heat exchanger 12 through a first hot water pipeline 28 provided with a first-stage circulating water pump 6, after heat exchange is carried out with the plate heat exchanger 12, a first cold water pipeline 30 on a plate of the plate heat exchanger 12 is communicated with the stainless steel spiral quarter spray head 8 of the first-stage spray tower 5 through a first water inlet pipe 9, the stainless steel spiral quarter spray head 8 of the second-stage spray tower 15 is communicated with the bottom water tank of the second-stage spray tower 15 through a second water inlet pipe 32 provided with a second-stage circulating water pump 16, and the stainless steel spiral quarter spray head 8 of the third-stage spray tower 17 is communicated with the bottom water tank of the third-stage spray tower 17 through a third water inlet pipe 33 provided with a third-stage circulating water pump 18. The water in the water tank at the bottom of the first-stage spray tower 5 firstly passes through the cooling unit 2 to be cooled, then enters the two-stage stainless steel spiral quarter spray head 8 through the first water inlet pipe 9 to be sprayed out, the water sprayed out through the spray head is subjected to countercurrent exchange with the high Wen Chouqi, the water after fully absorbing the odor falls back to the water tank at the bottom, then enters the next round of cooling firstly, then sprays and deodorizes, and the odor temperature is also reduced through vapor-liquid exchange while the odor is purified by the first-stage spray tower 5. The cooled odor sequentially enters the second-stage spray tower 15 and the third-stage spray tower 17 through the air pipe 24 by virtue of the suction force of the rear-end glass fiber reinforced plastic centrifugal fan, water in a water tank at the bottom of the second-stage spray tower 15 enters the two-stage stainless steel spiral quarter spray head 8 of the second-stage spray tower 15 through the second water inlet pipe 32 provided with the second-stage circulating water pump 16, water in a water tank at the bottom of the third-stage spray tower 17 enters the two-stage stainless steel spiral quarter spray head 8 of the third-stage spray tower 17 through the third water inlet pipe 33 provided with the third-stage circulating water pump 18, and the water sprayed out through the spray head is subjected to countercurrent exchange with the cooled odor, and then falls back to the bottom water tank to be continuously sprayed circularly after the sprayed water fully absorbs the odor, so that the further purification of the high-temperature odor is realized.

The deodorizing wastewater treatment unit 4 comprises a water exchange pump 20, an integrated wastewater treatment device 21, a reuse water tank 22, a reuse water valve 23, a circulating water inlet pipe 25 and a drain pipe 26, wherein the bottom water tanks of the first-stage spray tower 5, the second-stage spray tower 15 and the third-stage spray tower 17 are communicated with the integrated wastewater treatment device 21 through the drain pipe 26 provided with the water exchange pump 20, the integrated wastewater treatment device 21 is communicated with the reuse water tank 22 through a pipeline, and the reuse water tank 22 is communicated with the bottom water tanks of the first-stage spray tower 5, the second-stage spray tower 15 and the third-stage spray tower 17 through the circulating water inlet pipe 25 provided with the reuse water valve 23. The water exchange pump 20 is used for exchanging saturated deodorizing wastewater which is dissolved with a large amount of odor substances in each stage of spray towers, and enters the integrated sewage treatment equipment 21 for purification through the drain pipe 26, and the purified water is temporarily stored in the reuse water tank 22. As the water level of the water tank at the bottom of each stage of spray tower drops, the floating ball of the circulating water inlet pipe 25 of the water tank at the bottom of the spray tower is opened, meanwhile, the recycling water valve 23 of the recycling water tank 22 is opened, purified water stored in the recycling water tank 22 enters the water tank at the bottom of each stage of spray tower through the circulating water inlet pipe 25, the water in the water tank at the bottom of each stage of spray tower is updated, the next round of deodorization is performed, the deodorizing wastewater is purified and recycled, and no secondary pollution is generated.

Deodorant can be arranged or not in the water tanks at the bottoms of the first-stage spray tower 5, the second-stage spray tower 15 and the third-stage spray tower 17, and the deodorant is a microbial deodorant or a chemical deodorant. In daily operation, the first-stage spray tower 5, the second-stage spray tower 15 and the third-stage spray tower 17 all operate with clear water or microbial deodorant; the chemical deodorant is used when spray water cannot be continuously updated in emergency or when the deodorizing effect is required to be improved, the first-stage spray tower 5 is used as clean water, the second-stage spray tower 15 is used as chemical deodorant (alkali+oxidant), the third-stage spray tower 17 is used as clean water or chemical deodorant (acidulant), the alkali+oxidant is mainly used for removing sulfur-containing odor, the comprehensive odor can be more efficiently removed in a short time, and the acidulant is mainly used for absorbing ammonia in the odor, so that the deodorizing efficiency is improved.

The spray deodorization path of the first-stage spray tower 5 is as follows: the spray water is pumped into a first hot water pipeline 28 in a plate heat exchanger 12 through a first-stage circulating water pump 6 in a bottom water tank of a first-stage spray tower 5 and circulated cooling water in a countercurrent air cooling tower 13 are subjected to cold and heat exchange in the cold and hot water pipelines in the plate heat exchanger 12 respectively, cooled spray water enters an upper layer and a lower layer of stainless steel spiral quarter spray heads 8 of the first-stage spray tower 5 through a first water inlet pipe 9 and is subjected to countercurrent liquid-gas exchange with odor from bottom to top in a multi-surface hollow ball packing 7, so that the water fully absorbs the odor, the exchanged odor enters the bottom of a second-stage spray tower 15 through an air pipe 24 after passing through a demister 10 at the top of the first-stage spray tower 5, and the liquid after the gas-liquid exchange drops back into the bottom water tank of the first-stage spray tower 5 and then enters a cooling unit 2 through the first-stage circulating water pump 6; the cooling water after heat exchange with the water in the first-stage spray tower 5 in the plate heat exchanger 12 enters the countercurrent air cooling tower 13 through the cooling circulating water pump 11, gas heat exchange is carried out on the cooling water in the packing in the countercurrent air cooling tower 13, the heat of the cooling water is converted into water vapor and is discharged from the top of the countercurrent air cooling tower 13, cooling of the cooling water is further realized, and the cooling water continuously enters the plate heat exchanger 12 to continuously exchange heat with the water in the first-stage spray tower 5, if circulation is carried out.

The spray deodorization path of the second-stage spray tower 15 of the utility model is: the odor cooled by the cooling unit 2 is purified by the first-stage spray tower 5 and then continuously enters the second-stage spray tower 15, water or deodorant of a water tank at the bottom of the second-stage spray tower 15 is pumped into stainless steel spiral quarter spray heads 8 on the upper layer and the lower layer of the second-stage spray tower 15 by a second-stage circulating water pump 16 to be sprayed out, the sprayed spray water and the odor in the second-stage spray tower 15 are subjected to countercurrent gas-liquid exchange deodorization in the two layers of multi-surface hollow ball fillers 7, and thus the odor subjected to further deodorization continuously enters the third-stage spray tower 17 by an air pipe 24 after being blocked by a demister 10 on the top of the second-stage spray tower 15.

The spray deodorization path of the third-stage spray tower 17 of the utility model is as follows: the water tank at the bottom of the third-stage spray tower 17 pumps water or deodorizer enters the stainless steel spiral quarter spray head 8 through the third-stage circulating water pump 18, spray water sprayed out through the spray head and odor in the third-stage spray tower 17 are subjected to full gas-liquid exchange deodorization in the multi-surface hollow ball filler 7, and purified gas after being blocked by the demister 10 at the top of the third-stage spray tower 17 is introduced into the exhaust chimney 19 through the air pipe 24 and is exhausted into the air.

The spray water in the first-stage spray tower 5, the second-stage spray tower 15 and the third-stage spray tower 17 is clear water or microbial deodorant, so that good deodorizing effect can be achieved, frequent water replacement is needed, and when the spray water is saturated or the deodorant is consumed completely, the spray water needs to be replaced. The water in the bottom water tanks of the three spray towers 5, 15 and 17 is changed by starting the water exchange pump 20 through the time set by the control cabinet, the saturated deodorizing wastewater in the water tanks of the three spray towers is pumped into the integrated sewage treatment equipment 21 through the drain pipe 26 for purification treatment, the treated clean water is temporarily stored in the reuse water tank 22, the water level in the water tanks of the three spray towers is lowered after the water exchange pump 20 is started, the floating ball in the bottom water tank is opened, and the purified water automatically enters the water tanks of the bottom of the three spray towers from the reuse water tank 22 through the circulating water inlet pipe 25 and the reuse water valve 23, so that the water in the water tanks of the bottom of the three spray towers is changed, and the continuous deodorizing capability of the spray water is maintained.

Claims (7)

1. A deodorization system for vertical airtight compost reactor, its characterized in that includes odor collection fan (1), cooling unit (2), tertiary spray deodorization unit (3) and deodorization waste water treatment unit (4), tertiary spray deodorization unit (3) are including first level spray tower (5), second level spray tower (15) and third level spray tower (17) that communicate in proper order through trachea (24), first level spray tower (5), second level spray tower (15), third level spray tower (17) inside are equipped with top defroster (10), stainless steel spiral quartering shower nozzle (8), multiaspect hollow ball packing (7), bottom water tank from top to bottom in proper order, and the gas outlet of vertical airtight compost reactor (27) communicates the air inlet of first level spray tower (5) lower part side through trachea (24), the gas outlet at third level spray tower (17) top is through trachea (24) intercommunication emission chimney (19), odor collection fan (1) set up between first level spray tower (27) and first level spray tower (5) or set up in third level spray tower (17) and stack (17) down, through the air inlet of first level spray tower (5) and cooling unit (4) intercommunication, odor collection fan (1) sets up between first level spray tower (17) and stack (5) and cooling unit (5) and the air inlet of waste water treatment unit (4) The bottom water tanks of the second-stage spray tower (15) and the third-stage spray tower (17) are communicated through pipelines.

2. The deodorizing system for a vertical closed composting reactor according to claim 1, characterized in that said odor collection fan (1) is a glass fiber reinforced plastic centrifugal fan.

3. The deodorizing system for a vertical closed composting reactor according to claim 1, wherein the cooling unit (2) comprises a cooling circulating water pump (11), a plate heat exchanger (12), a countercurrent air cooling tower (13) and an automatic floating ball (14), four pipelines are arranged on the plate of the plate heat exchanger (12), namely a first hot water pipeline (28), a second hot water pipeline (29), a first cold water pipeline (30) and a second cold water pipeline (31), hot water in the bottom water tank of the first-stage spray tower (5) enters the first hot water pipeline (28) provided with the first-stage circulating water pump (6), the plate heat exchanger (12) is communicated with the countercurrent air cooling tower (13) through the second hot water pipeline (29), the cooling water of the countercurrent air cooling tower (13) enters the second cold water pipeline (31) provided with the cooling circulating water pump (11), the first cold water pipeline (30) is communicated with the first water inlet pipe (9), and the automatic floating ball (14) is positioned at the bottom of the countercurrent air cooling tower (13).

4. The deodorizing system for a vertical closed composting reactor according to claim 1, characterized in that said polyhedral hollow sphere filler (7) has two layers, and a plurality of stainless steel spiral quarter spray heads (8) are arranged above each layer of said polyhedral hollow sphere filler (7).

5. A deodorizing system for a vertical closed composting reactor according to claim 3, wherein the bottom water tank of the first stage spray tower (5) is communicated with the plate heat exchanger (12) through a first hot water pipe (28) provided with a first stage circulating water pump (6), after the heat exchange of the plate heat exchanger (12), a first cold water pipe (30) on the plate of the plate heat exchanger (12) is communicated with the stainless steel spiral quarter spray head (8) of the first stage spray tower (5) through a first water inlet pipe (9), the stainless steel spiral quarter spray head (8) of the second stage spray tower (15) is communicated with the bottom water tank of the second stage spray tower (15) through a second water inlet pipe (32) provided with a second stage circulating water pump (16), and the stainless steel spiral quarter spray head (8) of the third stage spray tower (17) is communicated with the bottom water tank of the third stage spray tower (17) through a third water inlet pipe (33) provided with a third stage circulating water pump (18).

6. The deodorizing system for a vertical closed composting reactor according to claim 1, wherein said deodorizing wastewater treatment unit (4) comprises a water exchange pump (20), an integrated wastewater treatment device (21), a reuse water tank (22), a reuse water valve (23), a circulating water inlet pipe (25) and a drain pipe (26), the bottom water tanks of said first stage spray tower (5), said second stage spray tower (15) and said third stage spray tower (17) are communicated with the integrated wastewater treatment device (21) through the drain pipe (26) equipped with the water exchange pump (20), said integrated wastewater treatment device (21) is communicated with the reuse water tank (22) through a pipeline, and said reuse water tank (22) is communicated with the bottom water tanks of the first stage spray tower (5), said second stage spray tower (15) and said third stage spray tower (17) through the circulating water inlet pipe (25) equipped with the reuse water valve (23).

7. The deodorizing system for a vertical closed compost reactor as claimed in claim 1, wherein said first stage spray tower (5), second stage spray tower (15) and third stage spray tower (17) may or may not be provided with a deodorizing agent in the bottom water tanks, said deodorizing agent being a microbial deodorizing agent or a chemical deodorizing agent.

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