CN112121610A - Odor collecting and treating system for sewage treatment workshop - Google Patents

Odor collecting and treating system for sewage treatment workshop Download PDF

Info

Publication number
CN112121610A
CN112121610A CN202011086635.XA CN202011086635A CN112121610A CN 112121610 A CN112121610 A CN 112121610A CN 202011086635 A CN202011086635 A CN 202011086635A CN 112121610 A CN112121610 A CN 112121610A
Authority
CN
China
Prior art keywords
absorption section
odor
pipeline
liquid
stage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011086635.XA
Other languages
Chinese (zh)
Inventor
达健
唐广富
林楠
陆斌
刘顺顺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Dingtianda Engineering Technology Co ltd
Original Assignee
Nanjing Dingtianda Engineering Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing Dingtianda Engineering Technology Co ltd filed Critical Nanjing Dingtianda Engineering Technology Co ltd
Priority to CN202011086635.XA priority Critical patent/CN112121610A/en
Publication of CN112121610A publication Critical patent/CN112121610A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/52—Hydrogen sulfide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/346—Controlling the process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/75—Multi-step processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/79—Injecting reactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/96—Regeneration, reactivation or recycling of reactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B01D2251/604—Hydroxides

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention discloses an odor collecting and treating system for a sewage treatment workshop, which comprises an odor collecting device and an odor absorbing tower, wherein the odor collecting device comprises a sealing cover arranged on equipment for generating odor, an equipment air-bleed pipeline and a workshop air-bleed pipeline, the equipment air-bleed pipeline and the workshop air-bleed pipeline are led into an air inlet of the odor absorbing tower, the odor absorbing tower is internally provided with a primary absorption section, a secondary absorption section and a tertiary absorption section from bottom to top in sequence, the air inlet is arranged at the lower part of the primary absorption section, the upper part of each absorption section is respectively provided with a liquid distributor, a circulating liquid inlet communicated with the liquid distributor in the absorption section is respectively arranged on the wall surface of each tertiary absorption section on the absorbing tower, the secondary absorption section and the tertiary absorption section are respectively provided with a packing layer, the packing layer is arranged below the liquid distributor in the absorption section, a liquid collecting tank is respectively arranged between the primary absorption section and the secondary absorption section and, the liquid collecting tank is provided with a gas raising pipe, and the liquid collecting tank and the bottom of the primary absorption section are respectively provided with a circulating liquid outlet.

Description

Odor collecting and treating system for sewage treatment workshop
Technical Field
The invention relates to a sewage treatment workshop odor collecting and treating system, and belongs to the technical field of sewage plant odor treatment.
Background
At present, a large amount of odor is continuously discharged in the sewage treatment process, the main sources of the odor are buildings and structures such as a regulating tank, an anaerobic tank, an aerobic tank, a sludge press filtration room, sludge, a packaging room, a sludge warehouse and the like, and the main component is CH4、H2S、NH3VFAs, VOCs and other gases give off very unpleasant odor, and if the substances are not removed from the gases, the substances are greatly harmful to the atmospheric environment and the health of human bodies after being contacted with the substances for a long time. The traditional odor washing and absorbing technology is to arrange an absorbing tower, wherein the absorbing tower is an empty tower or a filler laid in the tower, and a spraying facility arranged on the upper part of the absorbing tower sprays washing liquid. The waste gas washing tower is in countercurrent contact with washing liquid to separate organic matters or other harmful matters from the bad smell, and the washing tower is designed to have one-stage reaction. Because sewage and waste gas components are complex and various and the concentration changes frequently, the first-stage reaction often cannot achieve the expected effect of standard discharge.
In addition, because sewage treatment plant foul smell emission point is many, and the foul smell is collected the degree of difficulty great, and the foul smell collection of building at present is with relatively poor effect with processing apparatus, and ground environment is still not ideal, carries out effective collection and handles very necessary to the foul smell system.
Disclosure of Invention
The invention aims to provide an odor collecting and treating system for a sewage treatment workshop, which is used for solving the technical problems that an odor system cannot be effectively collected and treated and a waste gas washing tower is low in washing efficiency in the prior art.
The invention adopts the following technical scheme: a sewage treatment workshop odor collecting and treating system comprises an odor collecting device and an odor absorbing tower, wherein the bottom of the odor collecting device is provided with an air inlet, the top of the odor absorbing tower is provided with an air outlet, the odor collecting device comprises a sealing cover arranged on an odor generating device, a device air-entraining pipeline arranged at the top of the sealing cover and a workshop air-entraining pipeline arranged at the top of a odor generating building, each device air-entraining pipeline and each workshop air-entraining pipeline are led into the air inlet of the odor absorbing tower, the odor absorbing tower is internally provided with a first-stage absorbing section, a second-stage absorbing section and a third-stage absorbing section from bottom to top in sequence, the air inlet is arranged at the lower part of the first-stage absorbing section, the upper parts of the first-stage absorbing section, the second-stage absorbing section and the third-stage absorbing section are respectively provided with a liquid distributor, and the absorbing tower is provided with a circulating liquid inlet communicated with the liquid distributor in the absorbing, the second grade absorption section and tertiary absorption section all are equipped with the packing layer, the packing layer is located the below of liquid distributor in the absorption section of place, between one-level absorption section and the second grade absorption section, be equipped with the collecting tank between second grade absorption section and the tertiary absorption section respectively, all be equipped with the gas lift pipe that supplies gas to pass through on the collecting tank, be equipped with respectively with one-level absorption section bottom on the collecting tank and lead to the circulation liquid export outside the tower body, through the circulating line intercommunication between the circulation liquid export of every grade absorption section and the circulation liquid import, the last circulating pump that is equipped with of circulating line.
The odor absorption tower is externally provided with a detergent circulation tank and a process water circulation tank, the detergent circulation tank is connected to a circulation pipeline of the second-stage absorption section, the process water circulation tank is connected to a circulation pipeline of the third-stage absorption section, the circulation pipeline of the second-stage absorption section is connected with a detergent supplement pipeline which supplements detergent to the first-stage absorption section, the circulation pipeline of the third-stage absorption section is connected with a water supplement pipeline which supplements water to the detergent circulation tank, and the circulation pipeline of the first-stage absorption section is connected with a washing liquid discharge pipeline.
The primary absorption section, the detergent circulating tank and the process water circulating tank are respectively provided with a liquid level meter, and each pipeline is provided with an electric valve.
And the air-entraining pipelines of the devices and the air-entraining pipelines of the workshops are connected in parallel and then are led into the air inlet of the odor absorption tower through the air inlet pipeline, and the air inlet pipeline is provided with an air blower.
The sealing cover is made of a membrane material compounded by polyester fiber base cloth and a polyvinyl chloride coating.
The filler layer is made of regular filler, the filler layer in the secondary absorption section is non-metal filler, and the filler layer in the tertiary absorption section is metal filler.
And a support grid is arranged below the packing layer, and a pressure grid is arranged above the packing layer and used for tightly pressing the packing layer on the support grid.
The top of tertiary absorption section is equipped with the defroster, and the defroster is located the gas vent below, and the defroster adopts the defogging part of regular ripple or silk screen material, lies in the defroster top in the odor absorption tower and is equipped with the sparge water entry.
The tower body of the odor absorption tower is made of modified glass fiber reinforced plastic or PP materials.
A gas distributor communicated with the gas inlet is arranged in the primary absorption section, and the gas distributor is of a tubular structure or an umbrella-shaped distributor; the liquid distributor in the first-level absorption section is of a spray head type structure, and the liquid distributor in the second-level absorption section and the third-level absorption section is of a spray head type or groove type or pipe type structure.
The invention has the beneficial effects that: the invention uses a sealing cover to seal the equipment emitting the odor in the tower, uses pipelines to lead the odor in the equipment and the building to be sent into the odor absorption tower, the odor absorption tower adopts a three-stage washing process and is divided into three parts from bottom to top, namely a first-stage absorption section, a second-stage absorption section and a third-stage absorption section, the first-stage absorption liquid, the second-stage absorption liquid and the third-stage absorption liquid are respectively and independently pumped out from the side surface of the tower and circulate in the tower through an external circulating pipeline and a circulating pump to form three independent circulating systems, and the concentration of the absorption liquid in each absorption section can be independently controlled. The first-stage reaction section is arranged at the lower part and has an empty tower structure, and gas and liquid react at the first-stage reaction section to remove partial odor and solid impurities; the second-stage reaction section is arranged in the middle and is of a packed tower structure, so that an enough gas-liquid reaction area is provided, and most of odor substances are removed by gas-liquid reaction; the third stage is that the absorption section is arranged at the upper part, and the section is of a packed tower structure and is used for separating absorption liquid carried in purified gas and simultaneously separating trace substances in tail gas again. The odor absorption tower is a combination of an empty tower and a filler mass transfer structure tower, so that the mass transfer effect is enhanced, the equipment structure is optimized, and the occupied area is reduced.
Preferably, an electric valve is adopted, and key parameters can be controlled at any time by adopting a PLC computer, so that the spraying strength can be automatically adjusted according to the concentration, the composition and the flow of the odor.
Preferably, the odor in the equipment and the workshop is introduced to the odor absorption tower by adopting an air blower, so that the equipment and the workshop are in a micro negative pressure state, and the sewage treatment effect is not influenced.
Preferably, the sealing cover is a film material formed by a composite material of polyester fiber base cloth and a polyvinyl chloride coating, has the advantages of good air tightness, good fire resistance and flame retardance, long service life of more than 20 years, bearing capacity of more than 30MPa, acid and alkali resistance, corrosion resistance, ageing resistance and the like, and is superior to glass fiber reinforced plastic and other materials.
Preferably, the pressing grid and the supporting grid can well fix the filler layer.
Preferably, the demister can remove water mist droplets entrained in the tail gas.
Preferably, the gas distributor and the liquid distributor enable gas and liquid to be distributed uniformly and to be in full contact with each other, and absorption efficiency is improved.
Drawings
FIG. 1 is a system flow diagram of a sewage treatment plant odor collection and treatment system according to one embodiment of the present invention;
fig. 2 is a schematic view of the odor absorbing tower of fig. 1.
In the figure: 1-odor absorption tower, 11-air inlet, 12-air outlet, 13-circulating liquid inlet, 14-demister, 15-circulating liquid outlet, 16-washing water inlet, 2-primary absorption section, 3-secondary absorption section, 4-tertiary absorption section, 51-liquid distributor, 52-packing layer, 521-support grid, 522-pressure grid, 53 liquid collecting tank, 54-air lift pipe, 55-gas distributor, 6-air inlet pipeline, 61-equipment air inlet pipeline, 62-workshop air inlet pipeline, 63-air blower, 7-circulating pipeline, 71-circulating pump, 8-detergent circulating tank, 81-detergent supplementing pipeline, 9-process water circulating tank, 91-water supplementing pipeline and 10-washing liquid discharging pipeline.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Referring to fig. 1 to 2, the odor collecting and treating system of a sewage treatment plant of the present embodiment includes an odor absorbing tower 1 and an odor collecting device, the odor absorbing tower 1 has an air inlet 11 at the bottom and an air outlet 12 at the top, the odor collecting device includes a sealing cover disposed on an odor generating device, a device air-entraining duct 61 disposed at the top of the sealing cover, and a plant air-entraining duct 62 disposed at the top of an odor generating structure, each device air-entraining duct 61 and each plant air-entraining duct 62 are introduced into the air inlet of the odor absorbing tower, in the present embodiment, each device air-entraining duct 61 and each plant air-entraining duct 62 are connected in parallel and then introduced into the air inlet 11 of the odor absorbing tower 1 through an air inlet duct 6, the air inlet duct 6 is provided with a blower 63, the sealing cover is made of a membrane material compounded by polyester fiber base cloth and a polyvinyl chloride coating.
The odor absorption tower 1 is internally provided with a first-stage absorption section 2, a second-stage absorption section 3 and a third-stage absorption section 4 from bottom to top in sequence, an air inlet 11 is arranged at the lower part of the first-stage absorption section 2, liquid distributors 51 are respectively arranged at the upper parts of the first-stage absorption section 2, the second-stage absorption section 3 and the third-stage absorption section 4, a circulating liquid inlet 13 communicated with the liquid distributors 51 in the absorption sections is respectively arranged on the wall surfaces of the first-stage absorption section 2, the second-stage absorption section 3 and the third-stage absorption section 4 on the absorption tower 1, packing layers 52 are respectively arranged in the second-stage absorption section 3 and the third-stage absorption section 4, the packing layers 52 are arranged below the liquid distributors 51 in the absorption sections, liquid collecting grooves 53 are respectively arranged between the first-stage absorption section 2 and the second-stage absorption section 3 and between the second-stage absorption section 3 and the third-stage absorption section 4, gas risers 54 for gas to pass through are respectively arranged on the liquid collecting grooves 53, circulating, the circulating liquid outlet 15 and the circulating liquid inlet 13 of each stage of absorption section are communicated through a circulating pipeline 7, and a circulating pump 71 is arranged on the circulating pipeline 7.
The packing layer 52 is made of regular packing, the packing layer in the secondary absorption section 3 is made of non-metal packing, and the packing layer in the tertiary absorption section 4 is made of metal packing. A support grid 521 is arranged below the filler layer 52, and a pressure grid 522 is arranged above the filler layer 52, wherein the pressure grid 522 is used for pressing the filler layer 52 on the support grid 521. The top of tertiary absorption section 4 is equipped with defroster 14, and defroster 14 adopts the defogging part of regular ripple or silk screen material, and defroster 14 is located gas vent 12 below, and the odor absorption tower 1 is located the defroster 12 top and is equipped with sparge water entry 16. The tower body of the odor absorption tower 1 is made of modified glass fiber reinforced plastic or PP material.
A gas distributor 55 communicated with the gas inlet 11 is arranged in the primary absorption section 2, and the gas distributor 55 is of a tubular structure or an umbrella-shaped distributor; the liquid distributor 51 in the first-stage absorption section 2 is in a spray head type structure, and the liquid distributors 52 in the second-stage absorption section 3 and the third-stage absorption section 4 are in spray head type or groove type or pipe type structures.
Odor absorption tower 1 is equipped with detergent circulation tank 8 and process water circulation tank 9 outward, and detergent circulation tank 8 is connected on the circulating line of second grade absorption section 3, and process water circulation tank 9 is connected on the circulating line of tertiary absorption section 4, be connected with the detergent that supplements the pipeline 81 to replenishing the detergent in the one-level absorption section 1 on the circulating line of second grade absorption section 2, be connected with the moisturizing pipeline 91 to moisturizing in the detergent circulation tank 8 on the circulating line of tertiary absorption section 4, be connected with washing liquid discharge pipeline 10 on the circulating line of one-level absorption section 2. Level gauges are respectively arranged in the primary absorption section 2, the detergent circulating tank 8 and the process water circulating tank 9, and electric valves are arranged on all pipelines.
Before the system is used, firstly, protective covers are laid on the upper parts of devices for generating odor, such as a regulating tank, an anaerobic tank, an aerobic tank, a sludge tank and the like, wherein the protective covers are made of flame-retardant membrane materials with good sealing performance, so that the odor is well sealed in the related devices and isolated from the outside, and is led out by a device air-entraining pipeline, thereby realizing effective collection and timely elimination of the odor; in the buildings such as a sludge filter pressing room, a sludge packaging room, a sludge warehouse and the like, a workshop air-entraining pipeline is directly led out, each pipeline is provided with an electric valve, odor of the equipment air-entraining pipeline and the workshop air-entraining pipeline is pumped into an odor absorption tower through a blower to be absorbed, and the valves on the air-entraining pipelines are adjusted during work to maintain the equipment and the workshop to work under micro negative pressure.
The odor emitted by sewage is mainly H2S, etc., the detergent in this embodiment adopts alkaline substance (sodium hydroxide or potassium hydroxide) to remove H in the tail gas2S and the like. The system is provided with three stages of independent absorption processes and is completed in one absorption tower. The odor enters a first-stage absorption section from the lower part of the odor absorption tower, the section is of an empty tower structure, a detergent is in countercurrent contact with gas in the first-stage absorption section, the odor is fully in contact with the detergent to generate chemical reaction, and H is removed2S and the like, and simultaneously washing off particles carried in the tail gas, leaving the particles in the tower kettle, and recycling the absorption liquid. Controlling the effective concentration of the detergent in the circulating liquid to be 0.5-1% and the pH value to be about 10, removing part of the detergent solution according to the absorption effect of the circulating liquid, discharging the detergent solution to a battery limit, and supplementing the detergent in the secondary absorption section to maintain the reaction of the absorption liquid.
The odor enters a middle secondary absorption section by leaving the primary absorption section, the section is a main reaction zone, in order to enhance the deodorization effect, the section is of a filler (the filler contains regular and scattered parts) structure, the characteristic of large specific surface area of the filler is utilized, the gas-liquid contact area and the retention time are increased, the absorbent is in repeated countercurrent contact with the gas in the secondary absorption section, the odor and the absorption liquid are subjected to chemical reaction, most of remaining odor-containing substances are removed, the odor is eliminated, and the washing liquid is recycled. And controlling the effective concentration of the alkali liquor in the circulating liquid to be about 1-2%, supplementing the detergent flow of the first-stage absorption section with the detergent in the second-stage absorption section according to the absorption effect of the first-stage absorption section, and supplementing fresh detergent in a boundary area and supplementing the process water of the third-stage absorption section with the process water of the current-stage absorption section.
The upper part of the absorption tower is provided with a third stage absorption section, the alkali liquor carried in the gas is washed by adopting process water, the discharged gas is ensured not to contain alkali liquor and other residues, the discharged gas reaches the standard and is discharged, the process water in the third stage absorption section is supplemented into a circulating pipeline of the second stage absorption section after a period of time, the process water is used as the supplementing water of the detergent, and the process water in the third stage is supplemented by fresh water in a battery compartment.
The whole odor treatment is finished in the absorption tower, and in order to ensure the deodorization effect, the spraying strength is controlled to be 15-60 m3/m2H or so.
The main control process of the whole system is as follows:
（1）H2and (3) S concentration control: according to the tail gas H at the top of the tower2And (4) automatically adjusting the concentration of S and the magnitude of the first-stage circulation quantity and the second-stage circulation quantity.
(2) Controlling the discharge amount of waste liquid: the PH value of the tower kettle is controlled to be about 10, and the material passing amount of the first-level, second-level and third-level absorption sections, the feeding amount of the washing liquid, the feeding amount of the process water and the discharging amount of the waste liquid are automatically adjusted in sequence.
(3) Controlling the washing tower kettle liquid: and (3) maintaining about 40-60% of the washing tower kettle liquid, and sequentially adjusting the excess material amount of the first-stage, second-stage and third-stage absorption sections, the feeding of the washing liquid, the feeding of the process water and the discharge amount of the waste liquid according to the height of the tower kettle.
(4) And (3) safety protection control of the deodorization closed system: when power is cut off in an external accident, the odor collecting device is connected with a power-cut automatic opening emergency valve, so that the closed facility is protected from being damaged due to pressure build-up. The emergency power failure safety interlocking facility is arranged, so that the odor collecting system of the deodorization project can not influence the normal operation of the sewage treatment system under any condition.
(5) Liquid level control of a circulating liquid tank: in the primary absorption section, the detergent circulating tank and the process water circulating tank, the liquid level is maintained at about 40-60%, corresponding inlet valves are adjusted according to the height of the liquid level, when the liquid level is lower than 30%, the valves are automatically opened to supplement circulating liquid, and when the liquid level is higher than 60%, the liquid supplement is stopped.
The whole set of washing and absorbing system realizes full-automatic operation under the control of the PLC, thereby achieving the aim of deodorization.
In summary, the present embodiment has the following advantages: (1) the odor collection rate can reach more than 99 percent, and the device can play a good role in improving the field and the surrounding environment; (2) the sealing cover is made of a film material which is long in service life, flame-retardant and good in sealing performance, and odor is sealed at the upper part of the odor emission device; (3) the odor outlet of each device is provided with a regulating measure, so that the device works under micro negative pressure without influencing the sewage treatment effect of the original facility; (4) the multistage absorption is adopted, the empty tower spraying is combined with the packing structure mass transfer tower, the gas-liquid contact time and area are increased, the mass transfer effect is enhanced, and the purified gas is stably discharged up to the standard; (5) the parameters of key data such as spray intensity, pH value of circulating liquid, concentration of absorption liquid, liquid level control and the like are controlled by a PLC computer, so that the separation effect is ensured; (6) the system occupies small area, is flexible to operate, simple to operate and easy to control.
Although the embodiments of the present invention have been described above in detail, the present invention is not limited to the above-described embodiments. The scope of the invention defined by the appended claims encompasses all equivalent substitutions and modifications.
The parts of the invention not mentioned are the same as the prior art or can be implemented using the prior art.

Claims (10)

1. The utility model provides a sewage treatment workshop foul smell is collected and processing system, its includes that the bottom is equipped with the air inlet, the top is equipped with the foul smell absorption tower of gas vent, its characterized in that: the sewage treatment workshop odor collecting and treating system further comprises an odor collecting device, the odor collecting device comprises a sealing cover arranged on equipment for generating odor, an equipment air-entraining pipeline arranged at the top of the sealing cover and a workshop air-entraining pipeline arranged at the top of a building for generating odor, each equipment air-entraining pipeline and each workshop air-entraining pipeline are led into an air inlet of the odor absorption tower, the odor absorption tower is internally provided with a primary absorption section, a secondary absorption section and a tertiary absorption section from bottom to top in sequence, the air inlet is arranged at the lower part of the primary absorption section, the upper parts of the primary absorption section, the secondary absorption section and the tertiary absorption section are respectively provided with a liquid distributor, the absorption tower is provided with a circulating liquid inlet communicated with the liquid distributor in the primary absorption section, the secondary absorption section and the tertiary absorption section on the wall surfaces of the primary absorption section, the secondary absorption section and the tertiary absorption section, and the absorption section are both provided with packing layers, the packing layer is arranged below the liquid distributor in the absorption section, a liquid collecting tank is arranged between the first-stage absorption section and the second-stage absorption section and between the second-stage absorption section and the third-stage absorption section respectively, gas risers for gas to pass through are arranged on the liquid collecting tank, a circulating liquid outlet leading to the outside of the tower body is arranged on the liquid collecting tank and at the bottom of the first-stage absorption section respectively, the circulating liquid outlet and the circulating liquid inlet of each stage of absorption section are communicated through a circulating pipeline, and a circulating pump is arranged on the circulating pipeline.
2. The sewage treatment plant odor collection and treatment system according to claim 1, wherein: the odor absorption tower is externally provided with a detergent circulation tank and a process water circulation tank, the detergent circulation tank is connected to a circulation pipeline of the second-stage absorption section, the process water circulation tank is connected to a circulation pipeline of the third-stage absorption section, the circulation pipeline of the second-stage absorption section is connected with a detergent supplement pipeline which supplements detergent to the first-stage absorption section, the circulation pipeline of the third-stage absorption section is connected with a water supplement pipeline which supplements water to the detergent circulation tank, and the circulation pipeline of the first-stage absorption section is connected with a washing liquid discharge pipeline.
3. The sewage treatment plant odor collection and treatment system according to claim 2, wherein: the primary absorption section, the detergent circulating tank and the process water circulating tank are respectively provided with a liquid level meter, and each pipeline is provided with an electric valve.
4. The sewage treatment plant odor collection and treatment system according to claim 1, wherein: and the air-entraining pipelines of the devices and the air-entraining pipelines of the workshops are connected in parallel and then are led into the air inlet of the odor absorption tower through the air inlet pipeline, and the air inlet pipeline is provided with an air blower.
5. The sewage treatment plant odor collection and treatment system according to claim 1, wherein: the sealing cover is made of a membrane material compounded by polyester fiber base cloth and a polyvinyl chloride coating.
6. The sewage treatment plant odor collection and treatment system according to claim 1, wherein: the filler layer is made of regular filler, the filler layer in the secondary absorption section is non-metal filler, and the filler layer in the tertiary absorption section is metal filler.
7. The sewage treatment plant odor collection and treatment system according to claim 1, wherein: and a support grid is arranged below the packing layer, and a pressure grid is arranged above the packing layer and used for tightly pressing the packing layer on the support grid.
8. The sewage treatment plant odor collection and treatment system according to claim 1, wherein: the top of tertiary absorption section is equipped with the defroster, and the defroster is located the gas vent below, and the defroster adopts the defogging part of regular ripple or silk screen material, lies in the defroster top in the odor absorption tower and is equipped with the sparge water entry.
9. The sewage treatment plant odor collection and treatment system according to claim 1, wherein: the tower body of the odor absorption tower is made of modified glass fiber reinforced plastic or PP materials.
10. The sewage treatment plant odor collection and treatment system according to claim 1, wherein: a gas distributor communicated with the gas inlet is arranged in the primary absorption section, and the gas distributor is of a tubular structure or an umbrella-shaped distributor; the liquid distributor in the first-level absorption section is of a spray head type structure, and the liquid distributor in the second-level absorption section and the third-level absorption section is of a spray head type or groove type or pipe type structure.
CN202011086635.XA 2020-10-12 2020-10-12 Odor collecting and treating system for sewage treatment workshop Pending CN112121610A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011086635.XA CN112121610A (en) 2020-10-12 2020-10-12 Odor collecting and treating system for sewage treatment workshop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011086635.XA CN112121610A (en) 2020-10-12 2020-10-12 Odor collecting and treating system for sewage treatment workshop

Publications (1)

Publication Number Publication Date
CN112121610A true CN112121610A (en) 2020-12-25

Family

ID=73852587

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011086635.XA Pending CN112121610A (en) 2020-10-12 2020-10-12 Odor collecting and treating system for sewage treatment workshop

Country Status (1)

Country Link
CN (1) CN112121610A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001038143A (en) * 1999-07-30 2001-02-13 Shinto Eco Techno:Kk Deodorizing device
KR101513682B1 (en) * 2014-12-19 2015-04-21 (주)한국테크 Cleansing-type Multistage Deodorising Apparatus
CN105214464A (en) * 2015-10-26 2016-01-06 新煤化工设计院（上海）有限公司 A kind of multi-stage spray fluidization tail gas washing tower
CN106039937A (en) * 2016-06-01 2016-10-26 广州益方田园环保股份有限公司 Waste gas absorption tower and waste gas absorption method
CN205995240U (en) * 2016-08-29 2017-03-08 陕西省石油化工研究设计院 A kind of efficient absorption tower being applied to sulphur-containing exhaust gas absorption
CN107983133A (en) * 2017-12-26 2018-05-04 上海亨远船舶设备有限公司 A kind of system and method for flue gas wet type combined desulfurization and denitration
CN109502669A (en) * 2019-01-03 2019-03-22 青岛艾尔兄弟科技有限公司 A kind of film capping deodoration system
CN211384519U (en) * 2019-11-13 2020-09-01 晋煤中威环保科技有限公司 Make gas circulating water odor treatment system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001038143A (en) * 1999-07-30 2001-02-13 Shinto Eco Techno:Kk Deodorizing device
KR101513682B1 (en) * 2014-12-19 2015-04-21 (주)한국테크 Cleansing-type Multistage Deodorising Apparatus
CN105214464A (en) * 2015-10-26 2016-01-06 新煤化工设计院（上海）有限公司 A kind of multi-stage spray fluidization tail gas washing tower
CN106039937A (en) * 2016-06-01 2016-10-26 广州益方田园环保股份有限公司 Waste gas absorption tower and waste gas absorption method
CN205995240U (en) * 2016-08-29 2017-03-08 陕西省石油化工研究设计院 A kind of efficient absorption tower being applied to sulphur-containing exhaust gas absorption
CN107983133A (en) * 2017-12-26 2018-05-04 上海亨远船舶设备有限公司 A kind of system and method for flue gas wet type combined desulfurization and denitration
CN109502669A (en) * 2019-01-03 2019-03-22 青岛艾尔兄弟科技有限公司 A kind of film capping deodoration system
CN211384519U (en) * 2019-11-13 2020-09-01 晋煤中威环保科技有限公司 Make gas circulating water odor treatment system

Similar Documents

Publication Publication Date Title
CN103055669B (en) A kind of Method And Device For Exhaust Air Purifying Treatment
CN208406422U (en) A kind of spray paint dust-removing waste gas purification integrated machine
CN204429097U (en) A kind of biofilter odor purification system
CN107441908A (en) A kind of industrial waste gas centralized processing system
CN204841412U (en) High -efficient biological deodorization device of integration
CN207108700U (en) A kind of sewage-treatment plant
CN103599695B (en) A kind of integrated treating device of organic exhaust gas and method
CN207745696U (en) A kind of odor treating device of petroleum chemical industry
CN206476379U (en) A kind of air cleaning system of refuse transfer station
CN113457408A (en) Efficient kitchen malodorous gas purification system
CN203458937U (en) Waste gas treatment device
CN207102282U (en) Peculiar smell deodorization cleaning equipment
CN207085685U (en) UV photodissociation and charcoal absorption integrated equipment for wastewater treatment
CN103962000A (en) Biological treatment system for waste gas
CN213834953U (en) Odor collecting and treating system for domestic sewage treatment system
CN203710909U (en) Integrated treatment device of organic waste gas
CN204841388U (en) Box VOC decomposes compound purification unit
CN112121610A (en) Odor collecting and treating system for sewage treatment workshop
CN211133535U (en) Chlorinated paraffin tail gas recovery processing system
CN210332216U (en) Differential contact countercurrent acid mist spray absorption tower
CN206566760U (en) A kind of biological deodorizing device
CN216171223U (en) Novel waste gas deodorization device combining chemical washing tower and biological filter
CN206535415U (en) A kind of device of large-wind-volume low-concentration foul gas purification
CN206082159U (en) Organic stench exhaust treatment device of cities and towns sewage treatment plant high concentration
CN112957894A (en) High-efficient integration landfill leachate sewage station exhaust treatment device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination