CN212701331U - Be applied to deodorizing device of sludge drying tail gas - Google Patents
Be applied to deodorizing device of sludge drying tail gas Download PDFInfo
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- CN212701331U CN212701331U CN202021122003.XU CN202021122003U CN212701331U CN 212701331 U CN212701331 U CN 212701331U CN 202021122003 U CN202021122003 U CN 202021122003U CN 212701331 U CN212701331 U CN 212701331U
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Abstract
The utility model belongs to the technical field of gaseous deodorization, a be applied to deodorizing device of sludge drying tail gas is disclosed. According to the utility model discloses a be applied to deodorizing device of sludge drying tail gas, including washing unit, biological deodorization unit and the physical adsorption unit of establishing ties in proper order, biological deodorization unit includes the casing and is located one-level biological deodorization layer and the biological deodorization layer of second grade that the casing from bottom to top communicates in proper order. The utility model discloses a be applied to deodorizing device of sludge drying tail gas can carry out comprehensive, deodorization effectively to the tail gas that produces when the sludge drying.
Description
Technical Field
The utility model belongs to the technical field of gaseous deodorization, concretely relates to be applied to deodorizing device of sludge drying tail gas.
Background
In the sludge drying process of a sewage plant, sludge needs to be heated at the temperature of about 200 ℃ to quickly evaporate water in the sludge, and meanwhile, the release of Volatile Organic Compounds (VOCS) can be accelerated in the heating process, so that a large amount of harmful gas can be released in a centralized manner during sludge drying. The harmful substances comprise organic compounds and inorganic compounds, wherein the organic compounds mainly comprise low molecular fatty acid, amines, aldehydes, ethers, halogenated hydrocarbon, aliphatic, aromatic and the like; the inorganic compound mainly includes ammonia, hydrogen sulfide, and the like.
In the prior art, most of sludge drying deodorization processes are chemical washing methods, harmful gas components capable of deodorizing are incomplete, and meanwhile, most of sludge drying deodorization processes are simple and inefficient in design and are not enough to meet the requirements of high standards and stricter emission standards at present.
SUMMERY OF THE UTILITY MODEL
In order to comprehensively and effectively deodorize the tail gas generated during the sludge drying process, the utility model provides a deodorizing device applied to the sludge drying tail gas.
According to the utility model discloses a be applied to deodorizing device of sludge drying tail gas, including washing unit, biological deodorization unit and the physical adsorption unit of establishing ties in proper order, biological deodorization unit includes the casing and is located one-level biological deodorization layer and the biological deodorization layer of second grade that the casing from bottom to top communicates in proper order.
Further, the washing unit includes first casing, the one-level washing layer and the second grade washing layer that set gradually from bottom to top that are located first casing, the one-level washing layer includes that top-down sets gradually first sprays layer and first packing layer, the second grade washing layer includes that top-down sets gradually the second sprays layer and second packing layer, the below region that is located first packing layer of first casing is formed with first air inlet, the top region that is located the second and sprays the layer of first casing is formed with first gas outlet, first gas outlet is linked together with the second air inlet on one-level biological deodorization layer.
Further, the washing unit still includes the first reservoir stratum that is located between the horizontal plane at the diapire of first casing and first air inlet place, and first layer and the second of spraying all sprays layer and all communicates through first circulating pump and first reservoir stratum.
Preferably, the external water replenishing device is communicated with the first water storage layer to replenish water to the first water storage layer.
It is also preferred that the plurality of first spray components of the first spray layer and/or the plurality of second spray components of the second spray layer are configured to continuously spray simultaneously.
Further, the water washing unit also comprises a first neutralization device which is selectively communicated with the first water storage layer and is used for discharging the liquid in the first water storage layer after the liquid is neutralized by the first neutralization device to be at the pH value equal to 7.
Preferably, the PH of the liquid in the first neutralization device is selected according to the PH of the liquid in the first water storage layer.
Also preferably, the first neutralization device may communicate with the first water storage layer by a circulation pump.
Further, the first-level biological deodorization layer comprises a third spraying layer and a third packing layer which are sequentially arranged from top to bottom, the second-level biological deodorization layer comprises a fourth spraying layer and a fourth packing layer which are sequentially arranged from top to bottom, the third spraying layer comprises a plurality of third spraying parts, the plurality of third spraying parts are arranged to continuously spray simultaneously, the fourth spraying layer comprises a plurality of fourth spraying parts, and at least one of the plurality of fourth spraying parts is arranged to continuously or intermittently spray.
Further, the second air inlet sets up the third packing layer below that is located of casing, and biological deodorization unit still sprays the layer and the fourth sprays the layer and all communicates through second circulating pump and second water storage layer including the second water storage layer between the horizontal plane that is located the diapire of casing and second air inlet place.
Preferably, the external water replenishing device is communicated with the first water storage layer and the second water storage layer at the same time so as to replenish water to the first water storage layer and the second water storage layer.
Furthermore, the first packing layer, the second packing layer, the third packing layer and the fourth packing layer are all filled with inert packing, and the inert packing of the third packing layer and the fourth packing layer is attached with deodorant bacteria.
Furthermore, the physical adsorption unit comprises a third shell, a first-stage adsorption unit and a second-stage adsorption unit, the first-stage adsorption unit and the second-stage adsorption unit are sequentially arranged in the third shell in a communicating mode from top to bottom, the first-stage adsorption unit comprises a third air inlet layer and a first adsorption layer, the third air inlet layer and the first adsorption layer are sequentially arranged from top to bottom, the second-stage adsorption unit comprises a second adsorption layer and a fourth air inlet layer, the second adsorption layer and the fourth air inlet layer are sequentially arranged from top to bottom, the third air inlet layer and the fourth air inlet layer are respectively communicated with an air outlet of the biological deodorization unit, and an exhaust layer is.
Furthermore, the first adsorption layer and the second adsorption layer are activated carbon layers.
Further, the exhaust layer is communicated with an exhaust pipeline, and the air outlet of the biological deodorization unit is selectively communicated with the exhaust pipeline.
Preferably, the exhaust pipeline is communicated with a demisting device.
Compared with the prior art, the utility model discloses a be applied to deodorizing device of sludge drying tail gas has following advantage:
1) the utility model discloses a be applied to deodorizing device of sludge drying tail gas produces through high temperature treatment when being applicable to the sludge drying and treat the deodorant gas, make the deodorization effect of biological deodorization unit better through setting up one-level biological deodorization layer and second grade biological deodorization layer, make remaining harmful gas further get rid of in the foul smell through setting up the physical adsorption unit, the harmful gas composition that can deodorize is more comprehensive, holistic deodorization effect is better, can satisfy present sludge drying and handle trade high standard, stricter emission standard requirement.
2) Through setting up the washing unit and including first casing and the one-level washing layer and the second grade washing layer that set gradually from bottom to top that is located first casing, the one-level washing layer, the second grade washing layer includes spraying layer and the packing layer that top-down set gradually, be formed with first air inlet and first gas outlet on the first casing, first gas outlet is linked together with the air inlet on one-level biological deodorization layer and makes the gas of treating deodorization can follow first air inlet entering washing unit, and pass through the one-level washing layer in proper order in washing unit, the second grade washing layer, gaseous cooling and deodorization are all more abundant, through washing unit cooling and deodorant gas through first gas outlet entering biological deodorization unit.
3) Through setting up the washing unit still including being located the diapire of first casing and the first reservoir stratum between the horizontal plane at first air inlet place, first spray the layer and the second sprays the layer and all make from the first layer that sprays through first circulating pump and first reservoir stratum intercommunication, the second sprays the spray liquid that the layer sprayed and can fall into first reservoir stratum, reduce the waste that sprays liquid, spray liquid in the first reservoir stratum simultaneously can also circulate to the first layer that sprays and the second sprays the layer through first circulating pump, practice thrift and spray liquid.
4) Through setting up the physical adsorption unit and including third casing and top-down one-level adsorption unit and the second grade adsorption unit that the intercommunication set gradually that sets gradually in the third casing, the one-level adsorption unit includes third air inlet layer and the first adsorbed layer that top-down set gradually, the second grade adsorption unit includes that top-down set gradually second adsorbed layer and fourth air inlet layer make and further deodorize in the deodorant gas of biological deodorization unit gets into the physical adsorption unit, simultaneously in the biological deodorization unit, the relatively poor gas of biodegradability is like halohydrocarbon, aliphatic, gas such as aromatics probably still remain, these gas can be got rid of in further getting into the physical adsorption unit, better deodorization effect has. Make the gas that gets into the physical adsorption unit can adsorb twice through setting up one-level adsorption unit and second grade adsorption unit, have better deodorization effect.
5) Through setting up the exhaust layer and being linked together with exhaust duct, the gas outlet of biological deodorization unit is optionally linked together with exhaust duct and is makeed when the gas that passes through washing unit, biological deodorization unit reaches emission standard or the first adsorbed layer of physical adsorption unit, when the second adsorbed layer is saturated, and gas can directly be arranged to exhaust duct from the gas outlet of biological deodorization unit, need not insert in the physical adsorption unit, uses more in a flexible way, can adapt to different foul smell concentration condition.
Drawings
Fig. 1 is a schematic structural diagram of a deodorization device applied to sludge drying tail gas according to an embodiment of the present invention.
Detailed Description
In order to better understand the purpose, structure and function of the present invention, the following description is made in detail with reference to the accompanying drawings.
Fig. 1 shows the structure of the deodorization device 100 applied to sludge drying tail gas according to the embodiment of the present invention, including the washing unit 1, the biological deodorization unit 2 and the physical adsorption unit 3 which are connected in series in sequence, the biological deodorization unit 2 includes a housing 23, and a first-level biological deodorization layer 21 and a second-level biological deodorization layer 22 which are located in the housing 23 and are communicated in sequence from bottom to top.
In the sludge drying process, the sludge is heated at the temperature of about 200 ℃ to quickly evaporate water in the sludge, and simultaneously, a large amount of harmful gases including organic compounds and inorganic compounds are intensively released, wherein the organic compounds mainly comprise low-molecular fatty acids (such as formic acid), amines (such as trimethylamine), aldehydes (such as formaldehyde), ethers (such as methyl sulfide), halogenated hydrocarbons (such as methane chloride), aliphatic (such as methane), aromatic (such as toluene) and the like; the inorganic compound mainly includes ammonia, hydrogen sulfide, and the like.
The utility model discloses be applied to deodorizing device 100 of sludge drying tail gas when using, the gas of treating deodorization at first gets into washing unit 1, and the ammonia in the foul smell reacts with water (NH) on the one hand3+H2O＝NH3·H2O) to remove ammonia, on the other hand, because the sludge is heated to about 200 ℃ in the sludge drying process, the temperature of the gas to be deodorized is high, which may affect the pipelines and instruments of the deodorization device 100, so that the water washing unit 1 may also cool the gas to be deodorized, thereby ensuring that each device of the deodorization device 100 can work normally. The gas passing through the water washing unit 1 enters the biological deodorization unit 2, the odor is adsorbed by the microorganisms in the biological deodorization unit 2 and biochemical reaction is carried out, wherein the odor dissolved in water is absorbed by the microorganisms through cell walls and cell membranes of the microorganisms, the odor insoluble in water is firstly attached to the outside of the microorganisms, extracellular enzymes secreted by the microorganisms are decomposed into soluble substances and then permeate into the cells, and the odor component entering the cells of the microorganisms and the microorganisms are subjected to biochemical reaction and are decomposed and utilized by the microorganisms, so that the odor entering the biological deodorization unit 2 is removed. Some harmful gas components with poor biodegradability may remain in the gas passing through the water washing unit 1 and the biological deodorization unit 2 (with good biodegradability)Poor means that although biochemical reaction can also occur with microorganisms, the deodorization efficiency is not ideal, such as halogenated hydrocarbon, aliphatic, aromatic and the like), the gas can further enter the physical adsorption unit 3 to be adsorbed and removed, the final deodorization efficiency can reach 95% -99%, and finally the gas which reaches the emission standard is discharged from the deodorization device 100.
The utility model discloses be applied to deodorizing device 100 of sludge drying tail gas produces through high temperature treatment when being applicable to the sludge drying and treats deodorant gas, make the deodorization effect of biological deodorization unit 2 better through setting up one-level biological deodorization layer 21 and second grade biological deodorization layer 22, make remaining harmful gas further get rid of in the foul smell through setting up physical adsorption unit 3, the harmful gas composition that can deodorize is more comprehensive, holistic deodorization effect is better, can satisfy present sludge drying and handle trade high standard, stricter emission standard requirement.
As shown in fig. 1, the water washing unit 1 may include a first housing 11, a first water washing layer 12 and a second water washing layer 13 disposed in the first housing 11 from bottom to top, the first water washing layer 12 may include a first spraying layer 121 and a first packing layer 122 disposed in the first housing 11 from top to bottom, the second water washing layer 13 may include a second spraying layer 131 and a second packing layer 132 disposed in the second housing from top to bottom, a first air inlet 111 may be formed in a lower region of the first housing 11 disposed in the first packing layer 122, a first air outlet 112 may be formed in an upper region of the first housing 11 disposed in the second spraying layer 131, and the first air outlet 112 is communicated with a second air inlet 27 of the first bio-deodorization layer 21. Make through this setting treat that deodorant gas can follow first air inlet 111 gets into washing unit 1 to through one-level washing layer 12, second grade washing layer 13 in washing unit 1 in proper order, gaseous cooling and deodorization are all more abundant, and the gas through washing unit 1 cooling and deodorization gets into biological deodorization unit 2 through first gas outlet 112.
According to the present embodiment, the water washing unit 1 may further include a first water storage layer 14 located between the bottom wall of the first housing 11 and the horizontal plane where the first air inlet 111 is located, and both the first spray layer 121 and the second spray layer 131 may be communicated with the first water storage layer 14 through the first circulation pump 15. Through this setting make from first spraying layer 121, the spraying liquid that the second sprayed layer 131 sprays can fall into first reservoir stratum 14, reduce the waste of spraying liquid, and the spraying liquid in first reservoir stratum 14 can also circulate to first spraying layer 121 and the second through first circulating pump 15 simultaneously and spray in the layer 131, practices thrift the spraying liquid.
Preferably, the external water replenishing device 6 may be communicated with the first water storage layer 14 to replenish the first water storage layer 14. Wherein, the external water supply device 6 can be factory tail water (namely, the treated sewage in the factory can meet the use requirement of the spray liquid). Can further cyclic utilization factory sewage through this setting, the water economy resource also has higher economic nature.
Also preferably, the plurality of first spray parts 123 of the first spray layer 121 and/or the plurality of second spray parts 124 of the second spray layer 131 may be configured to continuously spray at the same time. Through the arrangement, the spraying liquid of the first spraying layer 121 and/or the second spraying layer 131 is sprayed more uniformly and simultaneously reacts with the odor continuously, and the odor is cooled.
Preferably, the temperature of the spray liquid ranges from 0 ℃ to 10 ℃ to achieve better cooling effect.
Preferably, three first circulating pumps 15 connected in parallel may be provided, two first circulating pumps 15 are respectively connected to the first spraying layer 121 and the second spraying layer 131, and the other first circulating pump 15 is used as a backup to ensure that the spraying liquid in the first water storage layer 13 can be circulated to the first spraying layer 121 and the second spraying layer 131.
In a preferred embodiment, the water washing unit 1 may further comprise a first neutralization device (not shown) selectively communicated with the first water storage layer 14, and the first neutralization device may be used for discharging the liquid in the first water storage layer 14 after the liquid is neutralized by the first neutralization device to have a PH value equal to 7. The arrangement enables the first neutralization device to make the pH value in the water washing unit 1 reach the discharge requirement. Of course, the PH of the liquid in the first neutralization device may be selected according to the PH of the liquid in the first water storage layer 14.
Preferably, the first neutralization device may communicate with the first water storage layer 14 by a circulation pump. By the arrangement, the acidic liquid in the water washing unit 1 after being neutralized by the first neutralization device can be recycled to the first water storage layer 14, and the spray liquid can be recycled.
In the embodiment shown in fig. 1, primary bio-deodorizing layer 21 may include third spray layer 211 and third filler layer 212, which are sequentially disposed from top to bottom, secondary bio-deodorizing layer 22 may include fourth spray layer 221 and fourth filler layer 222, which are sequentially disposed from top to bottom, third spray layer 211 may include a plurality of third spray parts 213, a plurality of third spray parts 213 may be disposed to continuously spray at the same time, fourth spray layer 221 may include a plurality of fourth spray parts 214, and at least one of the plurality of fourth spray parts 214 may be disposed to continuously or intermittently spray. Taking the first biological deodorization layer 21 as an example for explanation, the odor entering the first biological deodorization layer 21 moves upward to the third packing layer 212, and the spray liquid sprayed from the third spray layer 211 moves downward to the third packing layer 212 to provide moisture for the microorganisms in the third packing layer 212, and at the same time, the spray liquid can dissolve a part of the odor (such as ammonia, etc., the reaction of ammonia and water, namely, NH3+H2O＝NH3·H2O), the remaining odor is decomposed by the microorganisms in the third packing layer 212, having a better deodorizing effect. The odor removal principle of the second biological deodorization layer 22 is similar to that of the first biological deodorization layer 21, and the description thereof is omitted.
In addition, the odor firstly enters the primary biological deodorization layer 21, so the plurality of third spraying parts 213 are arranged to spray simultaneously to make the odor continuously react with the spraying liquid, and the primary biological deodorization layer 21 can bear higher odor load and has better deodorization effect. And the concentration of the odor entering the secondary biological deodorization layer 22 is relatively low, when at least one of the plurality of fourth spraying parts 214 continuously sprays, the odor can still continuously react with the spraying liquid, the deodorization effect is better, and when at least one of the plurality of fourth spraying parts 214 intermittently sprays, the odor has better economical efficiency.
As shown in fig. 1, the second air inlet 27 is disposed below the third filler layer 212 of the housing 23, the biological deodorization unit 2 may further include a second water storage layer 24 disposed between the bottom wall of the housing 23 and the horizontal plane where the second air inlet 27 is located, and both the third spraying layer 211 and the fourth spraying layer 221 may be communicated with the second water storage layer 24 through the second circulation pump 25. Through this setting make from the third spray layer 211, the spray liquid that the fourth sprayed layer 221 sprayed can fall into the second water storage layer 24, reduce the waste of spray liquid, spray liquid in the second water storage layer 24 can also circulate to the third through second circulating pump 25 and spray in layer 211 and the fourth sprayed layer 221 simultaneously, practice thrift spray liquid.
Wherein, outside moisturizing device 6 can be linked together with second reservoir stratum 24 to carry out the moisturizing to second reservoir stratum 24, outside moisturizing device 6 can be the factory tail water (i.e. the sewage after the processing in the factory, can satisfy the operation requirement of spraying liquid). Can further cyclic utilization factory sewage through this setting, the water economy resource also has higher economic nature.
Preferably, three second circulating pumps 25 connected in parallel may be provided, two second circulating pumps 25 are respectively connected to third spraying layer 211 and fourth spraying layer 221, and another second circulating pump 25 is used as a backup to ensure that the spraying liquid in second water storage layer 24 can circulate to third spraying layer 211 and fourth spraying layer 221.
According to the utility model discloses be applied to deodorizing device 100 of sludge drying tail gas, first packing layer 122, second packing layer 132, third packing layer 212 and fourth packing layer 222 all can be filled has the inert filler, can attach there being the deodorization fungus on the inert filler of third packing layer 212, fourth packing layer 222. The "inert filler" as used herein means a filler which does not react with microorganisms or odor and may be an inert alumina filler; the term "deodorizing bacteria" refers to bacteria that react with various harmful components in odor, and examples thereof include acidophilic bacteria and nitrifying bacteria. The spray liquid can supply water and required nutrients (such as humic acid, nitrogen, phosphorus, potassium and CO (NH)) for the deodorant bacteria attached to the inert filler2)2、KH2PO4、(NH4)PO4、KNO3And one or more of ammonium salts) of an odor gas, which moves along the gaps between the inert fillers and adheres to the fillersThe deodorizing bacteria produce biochemical reaction to eliminate various components in the bad smell.
Here, the odor reacts with the shower liquid, and means that a component which is easily soluble in water, such as ammonia gas, in the odor reacts with water, and that the odor reacts with deodorant bacteria in the shower liquid after circulation (the shower liquid after circulation contains the deodorant bacteria).
As shown in fig. 1, the physisorption unit 3 may include a third housing 33, and a first adsorption unit 31 and a second adsorption unit 32 which are sequentially disposed from top to bottom and communicated with the third housing 33, the first adsorption unit 31 may include a third air inlet layer 311 and a first adsorption layer 312 which are sequentially disposed from top to bottom, the second adsorption unit 32 may include a second adsorption layer 322 and a fourth air inlet layer 321 which are sequentially disposed from top to bottom, the third air inlet layer 311 and the fourth air inlet layer 321 may be respectively communicated with the air outlet 26 of the bio-deodorization unit 2, and an air outlet layer 313 may be formed between the first adsorption layer 312 and the second adsorption layer 321. Through this setting make through the gas that biological deodorization unit 2 deodorized get into physical adsorption unit 3 and further deodorize, simultaneously in biological deodorization unit 2, the gas that the biodegradability is relatively poor such as halohydrocarbon, aliphat, aromatics etc. gas probably still has the residue, and these gas can be got into physical adsorption unit 3 further and get rid of, have better deodorization effect. Make the gas that gets into physical adsorption unit 3 can pass through twice absorption through setting up one-level adsorption unit 31 and second grade adsorption unit 32, have better deodorization effect.
Further, the first adsorption layer 312 and the second adsorption layer 321 may be activated carbon layers.
According to the embodiment of the present invention, the exhaust layer 313 of the deodorization device 100 for sludge drying exhaust gas can be connected to the exhaust pipe 34, and the gas outlet 26 of the biological deodorization unit 2 can be selectively connected to the exhaust pipe 34. Make through this setting when the gas that passes through washing unit 1, biological deodorization unit 2 reaches emission standard or the first adsorbed layer 312 of physical adsorption unit 3, second adsorbed layer 321 saturation, during gas can directly arrange exhaust duct 34 from biological deodorization unit 2's gas outlet 26, need not insert physical adsorption unit 3, use more in a flexible way, can adapt to the different foul smell concentration condition.
Preferably, the exhaust duct 34 may be connected with a demisting device 5. With this arrangement, moisture in the gas can be removed before the gas exits the exhaust duct 34 so that the moisture content within the gas meets emission standards.
The present embodiment may further include a monitoring system 4 disposed at the first gas outlet 112 of the water washing unit 1, the gas outlet 26 of the biological deodorization unit 2, the gas outlet of the physical adsorption unit 3, and the gas exhaust pipe 34, wherein the monitoring system 4 may include a plurality of gas monitors for monitoring the content of various gas components, so that an operator can know the deodorization process of the gas in real time and perform the emission after reaching the emission standard.
Preferably, the plurality of gas monitors 4 may include at least a hydrogen sulfide monitor, an ammonia gas monitor.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (10)
1. The utility model provides a be applied to deodorizing device of sludge drying tail gas, its characterized in that, including washing unit, biological deodorization unit and the physical adsorption unit who establishes ties in proper order, biological deodorization unit includes the casing, and is located the biological deodorization layer of one-level and the biological deodorization layer of second grade that communicate in proper order from bottom to top in the casing.
2. The deodorization device for sludge drying tail gas as claimed in claim 1, wherein the water washing unit comprises a first housing, a first water washing layer and a second water washing layer sequentially arranged from bottom to top in the first housing, the first water washing layer comprises a first spraying layer and a first packing layer sequentially arranged from top to bottom, the second water washing layer comprises a second spraying layer and a second packing layer sequentially arranged from top to bottom, a first air inlet is formed in the lower region of the first packing layer, a first air outlet is formed in the upper region of the second spraying layer, and the first air outlet is communicated with the second air inlet of the first biological deodorization layer.
3. The deodorization device for sludge drying tail gas as claimed in claim 2, wherein the water washing unit further comprises a first water storage layer located between the bottom wall of the first housing and the horizontal plane where the first air inlet is located, and the first spraying layer and the second spraying layer are both communicated with the first water storage layer through a first circulating pump.
4. The deodorization device for sludge drying tail gas as recited in claim 3, wherein the water washing unit further comprises a first neutralization device selectively communicated with the first water storage layer, and the first neutralization device is used for neutralizing the liquid in the first water storage layer to a pH value equal to 7 and then discharging the liquid.
5. The deodorization device for sludge drying tail gas as claimed in claim 3 or 4, wherein the primary biological deodorization layer comprises a third spraying layer and a third packing layer which are sequentially arranged from top to bottom, the secondary biological deodorization layer comprises a fourth spraying layer and a fourth packing layer which are sequentially arranged from top to bottom, the third spraying layer comprises a plurality of third spraying parts, the third spraying parts are arranged to continuously spray at the same time, the fourth spraying layer comprises a plurality of fourth spraying parts, and at least one of the fourth spraying parts is arranged to continuously or intermittently spray.
6. The deodorization device for sludge drying tail gas as recited in claim 5, wherein the second air inlet is disposed below the third packing layer of the housing, the biological deodorization unit further comprises a second water storage layer disposed between the bottom wall of the housing and a horizontal plane where the second air inlet is disposed, and the third spraying layer and the fourth spraying layer are both communicated with the second water storage layer through a second circulation pump.
7. The deodorization device for sludge drying tail gas as recited in claim 5, wherein the first packing layer, the second packing layer, the third packing layer and the fourth packing layer are filled with inert packing, and the inert packing of the third packing layer and the fourth packing layer is attached with deodorization bacteria.
8. The deodorization device for sludge drying tail gas as claimed in any one of claims 1 to 4, wherein the physical adsorption unit comprises a third housing, and a primary adsorption unit and a secondary adsorption unit which are communicated with each other and arranged in the third housing, the primary adsorption unit comprises a third gas inlet layer and a first adsorption layer which are arranged in sequence from top to bottom, the secondary adsorption unit comprises a second adsorption layer and a fourth gas inlet layer which are arranged in sequence from top to bottom, the third gas inlet layer and the fourth gas inlet layer are respectively communicated with the gas outlet of the biological deodorization unit, and a gas exhaust layer is formed between the first adsorption layer and the second adsorption layer.
9. The deodorization device for sludge drying tail gas as recited in claim 8, wherein the first adsorption layer and the second adsorption layer are activated carbon layers.
10. The deodorization device for sludge drying tail gas as recited in claim 9, wherein the exhaust layer is in communication with an exhaust pipeline, and the air outlet of the biological deodorization unit is selectively in communication with the exhaust pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021122003.XU CN212701331U (en) | 2020-06-16 | 2020-06-16 | Be applied to deodorizing device of sludge drying tail gas |
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| CN202021122003.XU CN212701331U (en) | 2020-06-16 | 2020-06-16 | Be applied to deodorizing device of sludge drying tail gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115959809A (en) * | 2022-12-28 | 2023-04-14 | 浙江筑微科技有限公司 | Multifunctional sludge treatment experiment and detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115959809A (en) * | 2022-12-28 | 2023-04-14 | 浙江筑微科技有限公司 | Multifunctional sludge treatment experiment and detection method |
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