CN114522528A

CN114522528A - Kitchen waste odor removal process

Info

Publication number: CN114522528A
Application number: CN202210167201.5A
Authority: CN
Inventors: 吴海波; 张传永; 王一骋
Original assignee: Suzhou Huayijie Environmental Energy Technology Co ltd
Current assignee: Suzhou Huayijie Environmental Energy Technology Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-05-24
Anticipated expiration: 2042-02-23
Also published as: CN114522528B

Abstract

The invention relates to the field of kitchen waste treatment, in particular to a kitchen waste odor removal process, which comprises the following steps: s1, odor collection: collecting various odors through a front end collecting system, wherein the odors are collected into a collecting box; s2, acid spraying: introducing the odor in the collection box into an acid spraying mechanism for acid spraying, and enabling a spraying liquid to be in full contact with the odor through the acid spraying mechanism so as to transfer components in a gas phase to a liquid phase and generate neutralization, oxidation or other chemical reactions with the odor; s3, alkali spraying: introducing the odor subjected to acid spraying into an alkali spraying mechanism for alkali spraying, and fully contacting the spraying liquid with the odor through the alkali spraying mechanism; through the improvement to acid spraying mechanism and alkali spraying mechanism, gas-liquid mixing is fully realized in the acid spraying and alkali spraying processes, so that the gas-liquid mixing is sufficient and sufficient, and further, the efficient deodorization effect is achieved.

Description

Kitchen waste odor removal process

Technical Field

The invention relates to the field of kitchen waste treatment, in particular to a kitchen waste odor removal process.

Background

Although the prior art has a kitchen waste odor treatment process, for example, in the invention patent of application No. CN202110197251.3, a kitchen waste and waste gas treatment combination device and a process thereof are disclosed, wherein the first stage spray tower and the second stage spray tower are only used for carrying out simple circulating spraying through a simple circulating water tank and a spraying mechanism to realize the mixing of odor and liquid, so that odor molecules in the odor and the liquid are neutralized, oxidized or subjected to other chemical reactions to remove substances in the odor, the more sufficient the odor and the spraying liquid are contacted, the better the reaction effect is, and the best deodorization effect is achieved, but the odor is obviously pumped into the first-stage spray tower or the second-stage spray tower and then is sprayed, the spraying and mixing process is that the odor is sprayed and mixed in the process of rising from the spraying tower and then is sent to a lower-level processing mechanism by the negative pressure mechanism for processing, so that the gas-liquid contact between the odor and the spraying liquid is very limited in the process, and the absorption of the negative pressure mechanism to the odor leads the gas-liquid contact time to be very short, therefore, the gas-liquid mixing is not enough, and the deodorizing effect is also poor, and in many cases, useless work is done, and the acid spraying and the alkali spraying in the prior art are basically the same as the situation in the invention patent with the application number of CN202110197251.3, and the gas-liquid mixing effect is very poor, and the deodorizing effect is also poor, so that the deodorizing effect of the final kitchen waste is very poor.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the invention aims to provide a kitchen waste odor removal process, which solves the problems in the prior art, and fully realizes gas-liquid mixing in the acid spraying and alkali spraying processes by improving an acid spraying mechanism and an alkali spraying mechanism, so that the gas-liquid mixing is fully realized, and the efficient deodorization effect is further achieved.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a kitchen waste odor removal process is characterized by comprising the following steps: s1, odor collection: collecting various odors through a front end collecting system, wherein the odors are collected into a collecting box; s2, acid spraying: introducing the odor in the collection box into an acid spraying mechanism for acid spraying, and enabling spraying liquid to be in full contact with the odor through the acid spraying mechanism, so that components in a gas phase are transferred to a liquid phase and undergo neutralization, oxidation or other chemical reactions with the odor;

s3, alkali spraying: introducing the odor subjected to acid spraying into an alkali spraying mechanism for alkali spraying, fully contacting a spraying liquid with the odor through the alkali spraying mechanism, transferring components in a gas phase to a liquid phase, and performing neutralization, oxidation or other chemical reactions with the odor to further deodorize, wherein the alkali spraying can synthesize an acidic solution carried by the odor subjected to acid spraying; s4, biological deodorization: introducing odor after alkali spraying into a biological filter for biological deodorization, wherein the biological deodorization adopts the combination of liquid absorption and biological treatment, the odor is selectively absorbed by a washing bed (namely nutrient solution) to form mixed sewage, and pollutants in the mixed sewage are degraded under the action of microorganisms; s5, photocatalytic oxidation: introducing the odor subjected to biological deodorization into a photocatalytic oxidation mechanism for photocatalytic oxidation deodorization; s6, emission up to standard: and leading the odor subjected to photocatalytic oxidation deodorization to the discharge tower through a fan to be discharged after reaching the standard.

Preferably, the front end collection system includes that the foul smell of workshop of unloading is collected, the foul smell of preliminary treatment workshop is collected, the foul smell of dehydration computer lab is collected, the foul smell of kitchen waste grease workshop is collected, the foul smell between waste water station mud is collected, the foul smell of waste water station anaerobism pond is collected, wherein the workshop gate of unloading adopts automatic sealed door, carries out the collection of foul smell through totally closed negative pressure equipment, and the foul smell export that finally sets up from totally closed negative pressure equipment top leads to through the draught fan carry out purification treatment in the collecting box, and the foul smell export that preliminary treatment workshop, dehydration computer lab, kitchen waste grease workshop, waste water station mud and waste water station anaerobism pond carries out the collection of foul smell through the totally closed negative pressure equipment that sets up in it respectively, and the foul smell export that finally sets up from totally closed negative pressure equipment top leads to carry out purification treatment in the collecting box, wherein 5 times of taking a breath are taken to the preliminary treatment workshop, the totally-enclosed negative pressure equipment takes 8 times of air exchange per hour, and the kitchen waste grease workshop takes 8 times of air exchange per hour.

Preferably, sour spraying mechanism and alkali spraying mechanism's structure are the same, including spraying the jar, the bottom that sprays the jar is by being fixed with first fixed plate and second fixed plate respectively supreme down, evenly distributed has a plurality of through-hole on first fixed plate and the second fixed plate, the below of first fixed plate is fixed with the intake pipe on spraying the lateral wall of jar, be fixed with the one end of circulating pipe on spraying the lateral wall of jar between first fixed plate and the second fixed plate, be fixed with drawing liquid pump and its other end on the circulating pipe and be fixed with the shower head, the shower head stretches into spraying the inside of jar and its setting in spraying the upper end of jar, the shower head leaves the gap with spraying the inside wall of jar and evenly distributed has a plurality of convex column that sprays downwards on its bottom face.

Preferably, the shape that sprays the post is the cuboid, be fixed with the crisscross board that distributes of a plurality of groups on the inside wall about it, every crisscross board of group is including last crisscross board and lower crisscross board, go up the free end of crisscross board and leave the clearance between the right inside wall that sprays the post, leave the clearance between the free end of crisscross board and the left inside wall that sprays the post down, evenly distributed has a plurality of drain pipe on the bottom surface that sprays the post, the drain pipe includes the cylinder shaft, be fixed with the liquid outlet head of inverted triangle form on the bottom surface of shaft, be equipped with the drain hole on the bottom surface of liquid outlet head.

Preferably, the upper staggered plate and the lower staggered plate are respectively arranged in a downward inclination manner, and a plurality of spines are respectively and uniformly distributed on the upper surface of each of the upper staggered plate and the lower staggered plate.

Preferably, the through hole on the second fixing plate is communicated with one end of the hollow column, the other end of the hollow column is communicated with the bottom of the rectangular liquid receiving bowl, and the adjacent liquid receiving bowls are fixedly connected with each other.

Preferably, acid sprays the mechanism and alkali and sprays the mechanism bottom and be fixed with respectively and spray liquid complementary unit, sprays liquid complementary unit and includes the liquid reserve tank, and the liquid reserve tank intercommunication has the one end of communicating pipe, and the other end intercommunication of communicating pipe has acid to spray the mechanism and alkali and sprays on the mechanism is close to the lateral wall of bottom, is fixed with the transfer pump on communicating pipe, and acid sprays the bottom that mechanism and alkali sprayed the mechanism and is equipped with the bleeder line.

Preferably, a grid is fixed inside the column body.

Preferably, the spraying column is a regular quadrangular prism, the length of each edge of the bottom surface of the spraying column is 1cm, the diameter of the column body is 1mm, the diameter of the liquid outlet hole is 0.1mm,

preferably, the height of the discharge column is 25 m,

(III) advantageous effects

The invention provides a kitchen waste odor removal process, which fully realizes gas-liquid mixing in the acid spraying and alkali spraying processes by improving an acid spraying mechanism and an alkali spraying mechanism, so that the gas-liquid mixing is sufficient and sufficient, and further, the efficient deodorization effect is achieved.

Drawings

FIG. 1 is a schematic view of the whole process of the present invention.

Fig. 2 is a cross-sectional view of an acid spray mechanism or an alkali spray mechanism of the present invention.

Fig. 3 is a schematic view of the internal structure of the spray column of the present invention.

FIG. 4 is a schematic view of each set of interleaved plates of the present invention.

FIG. 5 is a schematic view of the interior of a drain tube according to the present invention.

Fig. 6 is a schematic view of the internal structure of the spray column of the present invention.

Fig. 7 is a schematic view of a hollow column and a liquid receiving bowl on a second fixing plate according to the present invention.

Fig. 8 is a detailed schematic diagram of the spray liquid replenishing mechanism of the present invention.

In the figure: 1-collection box, 2-acid spraying mechanism, 3-alkali spraying mechanism, 4-biological filter, 5-photocatalytic oxidation mechanism, 6-spraying tank, 7-first fixing plate, 8-second fixing plate, 9-air inlet pipe, 10-circulating pipe, 11-liquid pump, 12-spraying head, 13-spraying column, 14-staggered plate, 15-upper staggered plate, 16-lower staggered plate, 17-liquid outlet pipe, 18-column body, 19-liquid outlet head, 20-spine, 21-hollow column, 22-liquid receiving bowl, 23-spraying liquid supplement mechanism, 24-liquid storage box, 25-communicating pipe, 26-liquid conveying pump and 27-discharging tower.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 8 in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a technical scheme that: a kitchen waste odor removal process comprises the following steps: s1, odor collection: collecting various odors through a front end collecting system, wherein the odors are collected into a collecting box 1; s2, acid spraying: introducing the odor in the collecting box 1 into an acid spraying mechanism 2 for acid spraying, and enabling a spraying liquid to be in full contact with the odor through the acid spraying mechanism 2, so that components in a gas phase are transferred to a liquid phase and undergo neutralization, oxidation or other chemical reactions with the odor; s3, alkali spraying: introducing the odor subjected to acid spraying into an alkali spraying mechanism 3 for alkali spraying, fully contacting a spraying liquid with the odor through the alkali spraying mechanism 3, transferring components in a gas phase to a liquid phase, and performing neutralization, oxidation or other chemical reactions with the odor for further deodorization, wherein the alkali spraying can synthesize an acidic solution carried by the odor after acid spraying; s4, biological deodorization: introducing the odor after alkali spraying into a biological filter 4 for biological deodorization, wherein the biological deodorization adopts the combination of liquid absorption and biological treatment, the odor is selectively absorbed by a washing bed (namely nutrient solution) to form mixed sewage, and pollutants in the mixed sewage are degraded under the action of microorganisms; s5, photocatalytic oxidation: introducing the odor subjected to biological deodorization into a photocatalytic oxidation mechanism 5 for photocatalytic oxidation deodorization; s6, emission up to standard: the odor after photocatalytic oxidation deodorization is led to the discharge tower 26 by the fan to be discharged up to the standard, the invention can collect and treat the odor generated in each link of kitchen waste treatment through the 6 steps, thoroughly deodorizes the odor, has high deodorization efficiency, can fully and thoroughly contact the odor and the spray liquid through the acid spray mechanism 2 and the alkali spray mechanism 3 with special structures in the acid spray and alkali spray processes, further leads the substance in the odor to thoroughly react with the spray liquid, has high reaction efficiency, wherein the acid spray liquid is strong acid spray liquid and the alkali spray liquid is strong alkali spray liquid, and chemical agents capable of neutralizing and oxidizing relevant odor components in odor are added in the strong acid spray liquid and the strong alkali spray liquid, these chemical agents capable of neutralizing and oxidizing the odor belong to the prior art and are not described in detail herein.

Front end collection system includes that the foul smell of workshop of unloading is collected, the foul smell of preliminary treatment workshop is collected, the foul smell of dehydration computer lab is collected, the foul smell of kitchen waste grease workshop is collected, the foul smell between waste water station mud is collected, the foul smell in waste water station anaerobism pond is collected, wherein the workshop gate of unloading adopts automatic airtight door, carries out the collection of foul smell through totally closed negative pressure equipment, finally leads to through the draught fan from the foul smell export that totally closed negative pressure equipment top set up carry out the purification treatment in the collecting box 1, preliminary treatment workshop, dehydration computer lab, kitchen waste grease workshop, waste water station mud are between and the collection of foul smell through the totally closed negative pressure equipment that sets up in it respectively, finally lead to through the draught fan from the foul smell export that totally closed negative pressure equipment top set up carry out purification treatment in the collecting box 1, wherein 5 times of taking a breath in the preliminary treatment workshop per hour, the fully-closed negative pressure equipment adopts 8 times of ventilation times per hour, the kitchen waste grease workshop adopts 8 times of ventilation times per hour, wherein the gate of the unloading workshop adopts an automatic sealed door, the vehicle is opened when passing through and automatically closed after passing through, each unloading workshop is an independent sealed space in the whole unloading process, the good sealing performance is realized by the method, the odor is prevented from overflowing in the unloading process, the collection is convenient, the odor generated in each link in the kitchen waste treatment process is collected, the odor can not directly enter the external environment, the good collection effect is realized, the pretreatment workshop is subjected to 5 times of ventilation times per hour, the fully-closed negative pressure equipment adopts 8 times of ventilation times per hour, and the kitchen waste grease workshop adopts 8 times of ventilation times per hour, therefore, the negative pressure state in the device can be guaranteed, the dissipation of malodorous gas is avoided, the ventilation times with the frequencies are finally selected through multiple tests in the actual operation process, the ventilation times with the frequencies are most appropriate, on one hand, the odor dissipation can be guaranteed to be minimum, and on the other hand, the labor amount cannot be increased due to the frequent ventilation times.

The acid spraying mechanism 2 and the alkali spraying mechanism 3 have the same structure and comprise a spraying tank 6, the bottom of the spraying tank 6 is respectively fixed with a first fixing plate 7 and a second fixing plate 8 from bottom to top, a plurality of through holes are uniformly distributed on the first fixing plate 7 and the second fixing plate 8, an air inlet pipe 9 is fixed on the side wall of the spraying tank 6 below the first fixing plate 7, one end of a circulating pipe 10 is fixed on the side wall of the spraying tank 6 between the first fixing plate 7 and the second fixing plate 8, an extraction pump 11 is fixed on the circulating pipe 10, a spraying head 12 is fixed at the other end of the circulating pipe, the spraying head 12 extends into the spraying tank 6 and is arranged at the upper end part of the spraying tank 6, a gap is reserved between the spraying head 12 and the inner side wall of the spraying tank 6, a plurality of spraying columns 13 protruding downwards are uniformly distributed on the bottom end surface of the spraying head, when odor in the collecting tank 1 enters the spraying tank 6 through the air inlet pipe 9, the bottom of the spray tank 6 is filled with spray liquid, the liquid level of the spray liquid is flush with the bottom surface of the second fixed plate 8, firstly, odor enters the spray liquid below the first fixed plate 7, at the moment, the spray liquid and the odor are subjected to preliminary mixed contact and reaction, meanwhile, the odor overflows from the through holes on the first fixed plate 7, in the process that the odor overflows from the through holes, larger bubbles are divided, so that the odor can be subjected to further and sufficient contact reaction with the spray liquid above the first fixed plate 7, the rest odor overflows upwards from the through holes on the second fixed plate 8, meanwhile, the liquid pump 11 starts to work, the spray liquid is extracted into the spray header 12 and then is sprayed out from the spray columns 13 on the spray header 12, the odor is sprayed and deodorized above the second fixed plate 8, the spray liquid returns to the bottom through the through holes on the second fixed plate 8 after being sprayed, and enters the circulating process, the stink after the deodorization through spraying enters the next-stage process through the gap between the inner side walls of the spraying head 12 and the spraying tank 6, and compared with a common acid spraying mechanism or an alkali spraying mechanism, the process directly leads the stink into the spraying liquid and separates the spraying liquid through the first fixing plate 7 and the second fixing plate 8, so that the stink is subjected to twice mixed reaction before being sprayed, the mixing effect is good, and the reaction is sufficient.

The spray column 13 is in a cuboid shape, a plurality of groups of staggered plates 14 which are distributed in a staggered mode are fixed on the left inner side wall and the right inner side wall of the spray column 13, each group of staggered plates 14 comprises an upper staggered plate 15 and a lower staggered plate 16, a gap is reserved between the free end of the upper staggered plate 15 and the right inner side wall of the spray column 13, a gap is reserved between the free end of the lower staggered plate 16 and the left inner side wall of the spray column 13, a plurality of liquid outlet pipes 17 are uniformly distributed on the bottom surface of the spray column 13, each liquid outlet pipe 17 comprises a cylindrical column body 18, an inverted triangular liquid outlet head 19 is fixed on the bottom surface of the column body 18, liquid outlet holes are formed in the bottom surface of the liquid outlet head 19, when spray liquid mixed with odor is pumped into the spray head 12 by the liquid pump 11, the spray liquid can enter the spray column 13 and then can pass through the staggered plates 14 in the spray column, the spray liquid and odor in the spray liquid can be fully mixed through the staggered plates 14, also can increase the route that the mixture that sprays liquid and foul smell passed through in spraying post 13 simultaneously, make the mixture more abundant, the mixture that sprays liquid and foul smell is through getting into drain pipe 17 after spraying post 13, go out the liquid hole on the liquid head 19 of the inverted triangle-shaped form on it and will spray the mixture blowout of liquid and foul smell, liquid head 19 of the inverted triangle-shaped form can be so that the mixture that sprays liquid and foul smell is in the state of being extruded, can obtain further mixture when can making the mixture that sprays liquid and foul smell extruded on the one hand, the reaction, on the other hand can increase the pressure of injection, the dynamics is bigger when making spray liquid spray the foul smell and spray, the effect of mixing reaction is better.

Go up crisscross board 15 and crisscross board 16 down and be the downward sloping setting respectively, and its upper surface distributes a plurality of spine 20 respectively evenly, will go up crisscross board 15 and crisscross board 16 down and be the downward sloping setting, can play the effect of water conservancy diversion like this, can accelerate the velocity of flow of spraying liquid in spraying post 13, raise the efficiency, set up spine 20 at the upper surface of last crisscross board 15 and crisscross board 16 down simultaneously, can play the effect of smashing the foul smell of mixing in the liquid that sprays like this, make it and the liquid that sprays carry out further abundant contact reaction, roughly can react relevant composition in the foul smell of mixing in it and accomplish, filterable efficiency has been improved greatly.

The through holes on the second fixing plate 8 are communicated with one end of the hollow column 21, the other end of the hollow column 21 is communicated with the bottom of the rectangular liquid receiving bowl 22, the adjacent liquid receiving bowls 22 are fixedly connected with each other, the hollow column 21 and the liquid receiving bowl 22 are arranged on the second fixing plate 8, so that on one hand, the sprayed liquid can be well received, the adjacent liquid receiving bowls 22 are fixedly connected with each other, the sprayed liquid falling off can enter the liquid receiving bowls 22, then the hollow column 21 on the liquid receiving bowls 22 returns to the sprayed liquid below the second fixing plate 8 for circulation, the sprayed liquid falling off can be circulated in the next round, the speed of the sprayed liquid returning to the sprayed liquid below the second fixing plate 8 is greatly improved, and the problem that the sprayed liquid cannot be circulated in time due to the fact that the spacing plate between the through holes and the through holes on the second fixing plate 8 falls off is solved, meanwhile, in the whole spraying process, the hollow column 21 and the liquid receiving bowl 22 not only serve as liquid receiving functions, but also serve as odor escape channels, in the process of simultaneous implementation, spraying liquid can be stored in the hollow column 21 and the liquid receiving bowl 22, and meanwhile odor below the second fixing plate 8 escapes from the hollow column 21 and the liquid receiving bowl 22, so that the odor can be further mixed and reacted in the hollow column 21 and the liquid receiving bowl 22, and a certain deodorizing effect is achieved.

Sour mechanism 2 and alkali spray mechanism 3 bottom and be fixed with respectively and spray liquid complementary unit 23, it includes liquid reserve tank 24 to spray liquid complementary unit 23, liquid reserve tank 24 intercommunication has the one end of communicating pipe 25, the other end intercommunication of communicating pipe 25 has sour mechanism 2 and alkali to spray and sprays on the lateral wall that mechanism 3 is close to the bottom, be fixed with transfer pump 26 on communicating pipe 25, sour mechanism 2 and alkali of spraying spray the bottom that mechanism 3 was equipped with the casting pipe, through the setting that sprays liquid complementary unit 23, can spray the spraying liquid that mechanism 2 and alkali sprayed in the mechanism 3 to sour spraying and carry out timely replenishment, it can change spraying the liquid to be equipped with the casting pipe in the bottom that mechanism 2 and alkali sprayed mechanism 3 at sour spraying, and it is very convenient.

The grids are fixed inside the column 18, and the column 18 is arranged in a grid shape, so that when the spray liquid passes through the column 18, the spray liquid and the odor mixed therein can be fully mixed and reacted, and the deodorization effect is further improved.

The spraying column 13 is a regular quadrangular prism, the length of each edge of the bottom surface of the spraying column is 1cm, the diameter of the column body 18 is 1mm, the diameter of the liquid outlet hole is 0.1mm, odor can be broken layer by layer through the arrangement of the proportion, sufficient mixing reaction is achieved, and the efficiency of liquid outlet of spraying liquid is ensured.

The height of the discharge tower 27 is 25 m, so that the purified odor is discharged to a high enough height to further reduce the influence on the environment and the harm to human body.

The working principle is as follows: when odor in the kitchen waste treatment process needs to be collected and treated, firstly, odor generated in each link is collected through a front end collection system and collected into a collection box 1, then the odor in the collection box 1 enters a spraying tank 6 through an air inlet pipe 9, spraying liquid is filled in the bottom of the spraying tank 6, the liquid level of the spraying liquid is flush with the bottom surface of a second fixing plate 8, firstly, the odor enters the spraying liquid below a first fixing plate 7, at the moment, the spraying liquid and the odor are subjected to preliminary mixed contact and reaction, meanwhile, the odor overflows from through holes in the first fixing plate 7, in the process that the odor overflows from the through holes, larger bubbles are cut, so that the odor can further fully contact and react with the spraying liquid above the first fixing plate 7, and the rest odor overflows upwards from the through holes in the second fixing plate 8, meanwhile, the liquid pump 11 starts to work to extract the spraying liquid mixed with odor, the spraying liquid is extracted into the spraying head 12, then the spraying liquid enters the spraying column 13 and then can pass through the staggered plate 14 in the spraying column, the spraying liquid and the odor in the spraying column can be fully mixed through the staggered plate 14, meanwhile, the path of the mixture of the spraying liquid and the odor in the spraying column 13 can be increased, so that the mixture is fully mixed, the mixture of the spraying liquid and the odor enters the liquid outlet pipe 17 after passing through the spraying column 13, the mixture of the spraying liquid and the odor is sprayed out through the liquid outlet hole in the inverted triangular liquid outlet head 19 on the liquid outlet pipe, the inverted triangular liquid outlet head 19 can enable the mixture of the spraying liquid and the odor to be in an extruded state, and on one hand, the mixture of the spraying liquid and the odor can be further mixed when extruded, the reaction is carried out, on the other hand, the spraying pressure can be increased, the force is stronger when the spraying liquid sprays the odor, the mixed reaction effect is better, the spraying liquid sprayed from the liquid outlet head 19 sprays and deodorizes the odor above the second fixed plate 8, the spraying liquid returns to the bottom through the through holes on the second fixed plate 8 after being sprayed to enter the circulating process, meanwhile, the upper staggered plate 15 and the lower staggered plate 16 are arranged in a downward inclined way, so that the flow guiding effect can be achieved, the flow speed of the spraying liquid in the spraying column 13 can be accelerated, the efficiency is improved, meanwhile, the sharp spines 20 are arranged on the upper surfaces of the upper staggered plate 15 and the lower staggered plate 16, the effect of smashing the odor mixed in the spraying liquid can be achieved, the odor and the spraying liquid can further and fully contact react, and related components in the odor mixed in the odor can be substantially reacted, the filtering efficiency is greatly improved, the hollow columns 21 and the liquid receiving bowls 22 are arranged on the second fixing plate 8, on one hand, the sprayed spraying liquid can be well received, the adjacent liquid receiving bowls 22 are fixedly connected with each other, the falling spraying liquid can enter the liquid receiving bowls 22, then the falling spraying liquid returns to the spraying liquid below the second fixing plate 8 from the hollow columns 21 on the liquid receiving bowls 22 for circulation, the falling spraying liquid can perform the next circulation, the speed of the spraying liquid returning to the spraying liquid below the second fixing plate 8 is greatly improved, the problem that timely circulation cannot be performed due to the fact that the spraying liquid falls on the second fixing plate 8 and a partition plate between through holes is solved, meanwhile, in the whole spraying process, the hollow columns 21 and the liquid receiving bowls 22 not only serve as the liquid receiving function, but also serve as a passage for odor to escape, in the process of simultaneous operation, spraying liquid is always stored in the hollow column 21 and the liquid receiving bowl 22, and odor below the second fixing plate 8 escapes from the hollow column 21 and the liquid receiving bowl 22, so that odor can be further mixed and reacted in the hollow column 21 and the liquid receiving bowl 22 to achieve a certain deodorization effect, the spraying liquid in the acid spraying mechanism 2 and the alkali spraying mechanism 3 can be timely supplemented through the arrangement of the spraying liquid supplementing mechanism 23, the liquid discharging pipes arranged at the bottoms of the acid spraying mechanism 2 and the alkali spraying mechanism 3 can be used for replacing the spraying liquid, the column body 18 is arranged in a grid shape, so that the spraying liquid can be fully mixed and reacted with the odor mixed in the column body 18 when passing through the column body, the deodorization effect is further improved, and the odor after being sprayed by the acid spraying and the alkali spraying filter can enter the biological filter for biological deodorization, then the odor enters the photocatalytic oxidation mechanism 5 for further deodorization, and then enters the discharge tower 26 with the height of 25 meters for high-altitude discharge, and the odor is thoroughly removed through the layer of treatment, so that the removal effect is good.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A kitchen waste odor removal process is characterized by comprising the following steps:

s1, odor collection: various odors are collected through a front end collecting system, and the odors are collected into a collecting box (1);

s2, acid spraying: introducing the odor in the collecting box (1) into an acid spraying mechanism (2) for acid spraying, and enabling a spraying liquid to be in full contact with the odor through the acid spraying mechanism (2), so that components in a gas phase are transferred to a liquid phase and undergo neutralization, oxidation or other chemical reactions with the odor;

s3, alkali spraying: introducing the odor subjected to acid spraying into an alkali spraying mechanism (3) for alkali spraying, fully contacting a spraying liquid with the odor through the alkali spraying mechanism (3), transferring components in a gas phase to a liquid phase, and performing neutralization, oxidation or other chemical reactions with the odor to further deodorize, wherein the alkali spraying can be used for synthesizing an acidic solution carried by the odor after acid spraying;

s4, biological deodorization: introducing the odor after alkali spraying into a biological filter (4) for biological deodorization, wherein the biological deodorization adopts the combination of liquid absorption and biological treatment, the odor is selectively absorbed by a washing bed (namely nutrient solution) to form mixed sewage, and pollutants in the mixed sewage are degraded under the action of microorganisms;

s5, photocatalytic oxidation: introducing the odor subjected to biological deodorization into a photocatalytic oxidation mechanism (5) for photocatalytic oxidation deodorization;

s6, emission up to standard: the odor after photocatalytic oxidation deodorization is led to an exhaust tower (26) through a fan to be exhausted according to the standard.

2. The kitchen waste odor removal process according to claim 1, characterized in that, the front end collection system includes that the odor of the workshop of unloading is collected, the odor of dehydration computer lab is collected, the odor of the kitchen waste grease workshop is collected, the odor between the mud of waste water station is collected, the odor of the anaerobism pond of waste water station is collected, wherein the workshop gate of unloading adopts automatic airtight door, carry out the collection of odor through totally closed negative pressure equipment, the odor outlet that finally sets up from totally closed negative pressure equipment top leads to through the draught fan carry out purification treatment in the collecting box (1), the odor of the workshop of unloading, dehydration computer lab, kitchen waste grease workshop, mud of waste water station and anaerobism pond carries out the collection of odor through the totally closed negative pressure equipment that sets up in it respectively, the odor outlet that finally sets up from totally closed negative pressure equipment top leads to through the draught fan carry out purification treatment in the collecting box (1), the pretreatment workshop takes the air exchange times of 5 times/hour, the totally-enclosed negative pressure equipment takes the air exchange times of 8 times/hour, and the kitchen waste grease workshop takes the air exchange times of 8 times/hour.

3. The kitchen waste odor removal process according to claim 1, wherein the acid spraying mechanism (2) and the alkali spraying mechanism (3) are identical in structure and comprise a spraying tank (6), a first fixing plate (7) and a second fixing plate (8) are fixed to the bottom of the spraying tank (6) from bottom to top respectively, a plurality of through holes are uniformly distributed in the first fixing plate (7) and the second fixing plate (8), an air inlet pipe (9) is fixed to the side wall of the spraying tank (6) below the first fixing plate (7), one end of a circulating pipe (10) is fixed to the side wall of the spraying tank (6) between the first fixing plate (7) and the second fixing plate (8), a liquid suction pump (11) is fixed to the circulating pipe (10) and a spraying head (12) is fixed to the other end of the circulating pipe, and the spraying head (12) extends into the spraying tank (6) and is arranged in the spraying tank (6) On the upper end part, a gap is reserved between the spray header (12) and the inner side wall of the spray tank (6), and a plurality of spray columns (13) protruding downwards are uniformly distributed on the bottom end surface of the spray header.

4. The kitchen waste odor removal process according to claim 3, wherein the spray column (13) is in the shape of a cuboid, a plurality of groups of staggered plates (14) which are distributed in a staggered way are fixed on the left inner side wall and the right inner side wall of the box body, each group of staggered plates (14) comprises an upper staggered plate (15) and a lower staggered plate (16), a gap is reserved between the free end of the upper staggered plate (15) and the right inner side wall of the spray column (13), a gap is reserved between the free end of the lower staggered plate (16) and the left inner side wall of the spray column (13), a plurality of liquid outlet pipes (17) are uniformly distributed on the bottom surface of the spraying column (13), the liquid outlet pipe (17) comprises a cylindrical column body (18), a liquid outlet head (19) in an inverted triangular shape is fixed on the bottom surface of the column body (18), and a liquid outlet hole is formed in the bottom surface of the liquid outlet head (19).

5. The kitchen waste odor removal process according to claim 4, wherein the upper staggered plate (15) and the lower staggered plate (16) are respectively arranged in a downward inclination manner, and a plurality of spikes (20) are respectively and uniformly distributed on the upper surface of the upper staggered plate.

6. The kitchen waste odor removal process according to claim 3, wherein one end of a hollow column (21) is communicated with the through hole on the second fixing plate (8), the other end of the hollow column (21) is communicated with the bottom of a rectangular liquid receiving bowl (22), and the liquid receiving bowls (22) are adjacent to each other and fixedly connected together.

7. The kitchen waste odor removal process according to claim 3, characterized in that the acid spraying mechanism (2) and the alkali spraying mechanism (3) are respectively fixed with a spraying liquid supplement mechanism (23) at the bottom, the spraying liquid supplement mechanism (23) comprises a liquid storage tank (24), the liquid storage tank (24) is communicated with one end of a communicating pipe (25), the other end of the communicating pipe (25) is communicated with the acid spraying mechanism (2) and the alkali spraying mechanism (3) on the side wall close to the bottom, the communicating pipe (25) is fixed with an infusion pump (26), the acid spraying mechanism (2) and the alkali spraying mechanism (3) are provided with a liquid discharge pipe at the bottom.

8. The kitchen waste odor removal process according to claim 4, characterized in that a grid is fixed inside the column body (18).

9. The kitchen waste odor removal process according to claim 4, wherein the spraying column (13) is a regular quadrangular prism, the length of each side of the bottom surface of the spraying column is 1cm, the diameter of the column body (18) is 1mm, and the diameter of the liquid outlet hole is 0.1 mm.

10. The kitchen waste odor removal process according to claim 1, wherein the height of said discharge tower (27) is 25 meters.