CN206911120U

CN206911120U - VOCs biodegradation washing systems

Info

Publication number: CN206911120U
Application number: CN201720562413.8U
Authority: CN
Inventors: 刘文军
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-05-19
Filing date: 2017-05-19
Publication date: 2018-01-23
Anticipated expiration: 2027-05-19

Abstract

The utility model belongs to VOCs treatment technical field, and in particular to VOCs biodegradation washing systems, including blower fan, heat-exchange device, deduster and biological water washing cleaning system；The biological water washing cleaning system includes reverse washing adsorbent equipment, secondary absorption water washing device and biomembrane purification device, and spray equipment is provided with the top of the reverse washing adsorbent equipment, secondary absorption water washing device and biomembrane purification device；The reverse washing adsorbent equipment bottom connection deduster, reverse wash in the middle part of adsorbent equipment are provided with diatomite ceramic adsorbent layer, its top connection secondary absorption water washing device；Active carbon filler layer is provided with the middle part of secondary absorption water washing device, the connection corresponding with biomembrane purification bottom of device of its bottom；Bacteria bed is provided with the middle part of the biomembrane purification device, delivery outlet is provided with the remote secondary absorption water washing device in biomembrane purification device top.The utility model strong adaptability, purification efficiency is high, and application value is notable.

Description

VOCs biodegradation washing systems

Technical field

The utility model belongs to VOCs treatment technical field, and in particular to VOCs biodegradation washing systems.

Background technology

VOCs is VOC（volatile organic compounds）English abbreviation.Typically VOCs emission sources can be divided into anthropogenic discharge source（Including stationary source and moving source）With natural emission source（Including biological source with it is abiotic Source）Two classes, wherein taking human as based on emission source, mostly for the production process of petrochemical industry related industry, product consumption behavior with And motor-vehicle tail-gas causes.VOCs complicated component, the harm to human body is big, and possessed special odor can cause the kind of human body Kind sense of discomfort, and there is toxicity and excitant.Known many VOCs have neurotoxicity, kidney and hepatotoxicity, or even have Carcinogenesis, blood constituent and cardiovascular system can be damaged, cause gastrointestinal disturbance, induce immune system, internal system and Disease of hematopoietic system, cause metabolic deficiency.A variety of VOCs can act on human body simultaneously in air, produce cumulative effect, and it endangers Degree greatly increases.

Therefore, it is necessary in time properly to VOCs processing.

In general VOCs control technologies are basically divided into two major classes at present：Recovery technology and destruction technology.Recovery technology is According to the properties of VOCs in itself, by physical method, under certain temperature and pressure, absorption and sorption agent and selectivity are used Permeable membrane etc. realizes VOCs separation, mainly including absorption process, absorption method, condensation method and membrane separation process.And destroying technology is then Using chemistry or biological method, VOCs gas molecules is changed into the water and carbon dioxide of small molecule, mainly include combustion method and Bioanalysis.

（1）Absorption process：The method of absorption process purifying VOCs is to utilize stripping liquid processing mixed gas, in mixed gas One or more of gas components be dissolved in liquid, or with absorbing liquid component occur selection chemical reaction, remove it The process of middle one or more of gases, so as to reach a kind of method of control atmosphere pollution.The method is suitable for atm number, medium The processing of the waste gas containing VOCs of concentration.

（2）Absorption method：Absorption method is to utilize gaseous mixture of the porous solid sorbent treatment containing VOCs, utilizes solid The unbalanced chemical bond force or molecular attraction on surface, make one or more components therein concentrate on the surface of solids, with up to To the purpose of separation.The active charcoal of conventional adsorbent, NACF, activated alumina, molecular sieve and zeolite etc..

（3）Condensation method：Condensation method is that have different saturated vapor pressures under different temperature and pressures using VOCs, is led to Reduction temperature and increase pressure are crossed, condenses out the pollutant in steam condition, it is purified and is reclaimed.This method Advantage is that apparatus and process is simple, and energy consumption is low, recyclable useful component；Shortcoming is the organic gas for being not suitable for handling low concentration, right Entrance VOCs requirements are strict, and when chilling temperature is relatively low, power consumption is larger.

（4）Membrane separation process：Membrane separation process is utilized under the promotion of pressure differential, and the speed of air penetrating film is different, so as to The process that admixture of gas is separated.The advantages of membrane separation process is that selectivity is good, and strong adaptability, energy consumption is low, no phase-state change, can Reclaim useful component；Shortcoming is that investment is big, strong to the dependence of film；Higher is required to the granule surface contral of film, membrane separation device behaviour It is required height.

（5）Combustion method：VOCs is converted into carbon dioxide, water and hydrogen chloride etc. is nontoxic or small toxicity by combustion method Inorganic matter process, the method for purification of referred to as burning, its chemical action be mainly under combustion oxidation and high temperature thermal decomposition effect.This Method is applied to administer pernicious gas that is flammable or can decomposing in the case of a high temperature.The advantages of combustion method be clearance compared with Height, typically more than 95%；Shortcoming is that direct combustion method is easily exploded, and wastes heat energy and is also easy to produce secondary pollution, heating power combustion Burning method operating cost is higher.

（6）Bioanalysis：Bioanalysis is under suitable environmental condition, using the vital movement of microorganism by VOCs gases Harmful substance be transformed into simple inorganic matter（CO2、H2O）And the process of cellular material etc..Common Biochemical method VOCS Method have：Zinc cation method, biofiltration process and biological island.The advantages of bioanalysis is that clearance is high, small investment, equipment Simply, operating cost is low, less formation secondary pollution, has a wide range of application；Shortcoming is that microorganism is higher to environmental requirement, crushing compared with Greatly, capacity of resisting impact load is poor, and equipment volume is big, is not suitable for the removal of high halogen compounds.

Such as Patent No. CN105879660A, the patent of entitled " a kind of VOCs cleaning systems of petrochemical industry waste gas " In file, a kind of scheme using Biochemical method VOCs is disclosed, particular content is：A kind of VOCs of petrochemical industry waste gas Cleaning system, the system include residual-heat exchanger, gas superheat protection device, thermal type gas quality flow meter, mixed gas stream Adjustable valve, fiber bag precipitator, pulsed UV activation-microbial degradation reactor, gas fume washing purifying column, air-introduced machine etc.； Wherein, the petrochemical industry waste gas containing VOCs enters residual-heat exchanger by gas piping, and the outlet of residual-heat exchanger passes through gas Body pipeline connects gas superheat protection device, and the outlet of gas superheat protection device connects thermal type gas quality by gas piping Flowmeter, the outlet of thermal type gas quality flow meter connect mixed gas flow regulating valve, mixed gas stream by gas piping The outlet of adjustable valve connects fiber bag precipitator by gas piping, and the outlet of fiber bag precipitator is connected by gas piping Pulsed UV activation-microbial degradation reactor, the outlet of pulsed UV activation-microbial degradation reactor pass through gas piping Gas fume washing purifying column is connected, the outlet of gas fume washing purifying column connects air-introduced machine by gas piping, and the outlet of air-introduced machine leads to Cross gas piping connection atmospheric environment；Wherein, pulsed UV activation-microbial degradation reactor left upper portion is provided with intake valve Door, lower right side are provided with drain tap, 1 pulsed uviol lamp, reactor bottom are respectively provided with reactor arranged on left and right sides wall 1 motor is installed, 1 set of stainless steel hollow shaft is connected thereon, porous drain is filled with inside stainless steel hollow shaft Pipe, porous catheter is connected with the pure cotton porous fibre bar being fixed on outside stainless steel hollow shaft, also, porous catheter is also It is connected with the bacterium solution groove for being installed on reactor head.Although the program combines ultraviolet irradiation and biological cleaning processing, efficiency It is higher, but due to the finite surface area of pure cotton porous fibre bar, bacterial strain can not breed stable, it is necessary to which persistently supplement is with ultraviolet The bacterium solution maintenance equipment effect of line protective substance, cost are higher.And ribbon needs to regularly replace, maintenance requirement is higher.

Therefore, it is relatively low to research and develop a kind of operating cost, microorganism can breed balance, at the VOCs biodegradations of good purification Reason equipment has necessity.

Utility model content

Higher is required to environmental condition in order to solve general microorganism VOCs cleaning equipments, impact resistance is poor to ask Topic, the utility model provide VOCs biodegradation washing systems.

VOCs biodegradation washing systems, including blower fan, heat-exchange device, deduster and biological water washing cleaning system, institute Blower fan, heat-exchange device, deduster and biological water washing cleaning system is stated to be sequentially connected by air channel；

The biological water washing cleaning system includes reverse washing adsorbent equipment, secondary absorption water washing device and biomembrane purification Device, reverse washing adsorbent equipment, secondary absorption water washing device and the biomembrane purification device top are provided with spray dress Put；

The reverse washing adsorbent equipment bottom is provided with the first air inlet, and first air inlet connects deduster, inverse Diatomite ceramic adsorbent layer is installed in the middle part of to washing adsorbent equipment, its top is provided with exhaust outlet；

The second air inlet is provided with the top of the secondary absorption water washing device, is connected with exhaust outlet by air channel, two level is inhaled Active carbon filler layer is provided with the middle part of attached water cleaning device, the connection corresponding with biomembrane purification bottom of device of its bottom；

Bacteria bed is provided with the middle part of the biomembrane purification device, biomembrane purification device top is away from secondary absorption water Delivery outlet is provided with cleaning device.

Further, the spray equipment is connected with nutrition liquid storage tank.

Further, reverse washing adsorbent equipment bottom, secondary absorption water washing device bottom and the biomembrane purification dress Bottom set portion is provided with biofilter, and the biofilter is interconnected.

Further, connected between the biofilter and spray equipment by a water washing cycles device.

Further, the biofilter bottom is provided with sewage draining exit.

Further, the filtering layer mounting groove that quantity is more than two is provided with the middle part of the reverse washing adsorbent equipment, it is described Filtering layer mounting groove opening is provided with closure, and the diatomite ceramic adsorbent layer is mounted in filtering layer mounting groove.

Further, the bacteria bed surface is covered with VOCs domesticated organism films.

Further, its material of the bacteria bed is inertia porous aggregate.

Further, it is provided with anti-explosion temperature-controlled device on the biomembrane purification device.

The utility model has the advantage of：

1st, strong adaptability, first VOCs can be pre-processed by heat reclamation device and deduster, makes its temperature control In the scope of suitable micro-organisms growth, and with after relatively low solid particulate matter concentration, then carry out biological cleaning processing.

2nd, three kinds of purification techniques are filtered due to combining physical absorption, zinc cation and bacteria bed, can purified simultaneously more Kind pollutant, and can be by the way that diatomite ceramics are carried out with the desorption processing available organic compound of recovery section.

3rd, the microorganism in biomembrane purification device and biofilter can form self-loopa without volume after inoculation and domestication Outer supplement microorganism suspension.

4th, acted on by zinc cation, after active carbon filler layer has adsorbed certain density VOCs, active carbon filler layer is inhaled Attached VOCs, which is decomposed by the microorganisms, realizes that absorption property regenerates so that active carbon filler layer is without changing.

5th, anti-explosion temperature-controlled device can detect the temperature in regulation biomembrane purification device the moment, ensure for the micro- of purifying VOCs Biological normal growth circulation.

Brief description of the drawings

, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work Under, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is the structural representation of the one of embodiment of VOCs biodegradation washing systems.

Accompanying drawing identifies：

1- blower fans, 2- heat-exchange devices, 3- dedusters, 4- inversely wash adsorbent equipment, the air inlets of 41- first, 42- diatoms Native ceramic adsorbent layer, 43- exhaust outlets, 44- filtering layer mounting grooves, 45- closures, 5- secondary absorption water washing devices, the air inlets of 51- second Mouthful, 52- active carbon filler layers, 6- biomembrane purification devices, 61- bacteria beds, 62- delivery outlets, 63-VOCs domesticated organism films, 7- spray equipments, 8- nutrition liquid storage tanks, 9- biofilters, 91- sewage draining exits, 10- water washing cycles devices, 11- anti-explosion temperature-controlled devices.

Embodiment

Make the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with the utility model Accompanying drawing in embodiment, clear, complete description is carried out to the technical scheme in the embodiment of the utility model, it is clear that described Embodiment be one of embodiment of the present utility model, rather than whole embodiment.Based on the reality in the utility model Example is applied, the every other embodiment that those of ordinary skill in the art obtain under the premise of creative work is not made, is belonged to The scope of the utility model protection.

VOCs biodegradation washing systems as shown in Figure 1, including blower fan 1, heat-exchange device 2, deduster 3 and Biological water Cleaning system is washed, the blower fan 1, heat-exchange device 2, deduster 3 and biological water washing cleaning system are sequentially connected by air channel；

It is net that the biological water washing cleaning system includes reverse washing adsorbent equipment 4, secondary absorption water washing device 5 and biomembrane Makeup puts 6, and reverse washing adsorbent equipment 4, secondary absorption water washing device 5 and the top of biomembrane purification device 6 are provided with Spray equipment 7；

Reverse washing adsorbent equipment 4 bottom is provided with the first air inlet 41, and first air inlet 41 connects dedusting Device 3, the reverse middle part of adsorbent equipment 4 of washing are provided with diatomite ceramic adsorbent layer 42, and its top is provided with exhaust outlet 43；

The top of secondary absorption water washing device 5 is provided with the second air inlet 51, is connected with exhaust outlet 43 by air channel, two The middle part of level absorption water washing device 5 is provided with active carbon filler layer 52, the connection corresponding with the bottom of biomembrane purification device 6 of its bottom；

The middle part of biomembrane purification device 6 is provided with bacteria bed 61, and the top of biomembrane purification device 6 is inhaled away from two level Delivery outlet 62 is provided with attached water cleaning device 5.During actual use, the pending gas containing VOCs drains through blower fan 1 enters heat Switch 2, temperature is controlled, and removes most solid suspension into deduster 3.Then gas is through the first air inlet Mouth 41 enters reverse washing adsorbent equipment 4 bottom, adsorbs and is sprayed through spray equipment 7 micro- by diatomite ceramic adsorbent layer 42 The top into secondary absorption water washing device 5 is sent out from top after organism suspension purification, again passes by the washing of microorganism suspension simultaneously After the absorption of active carbon filler layer 52, gas enters biomembrane purification device 6 and is persistently washed, while from bottom to top by life Thing filter bed 61 and delivery outlet 62, final purification are discharged for innocuous gas.It should be noted that from Patent No. CN106345233A Patent document understand, active carbon filler layer 52 constantly washs through microorganism suspension, and its absorption property can be constantly regenerating, makes activity Carbon filling material layer 52 can be for a long time without changing.

The spray equipment 7 is connected with nutrition liquid storage tank 8.Equipment initial start stage, store through sewage in nutrition liquid storage tank 8 The VOCs acclimated microorganism suspensions that domestication separation obtains in treatment plant's activated sludge, arrived by VOCs acclimated microorganisms suspension spray The surface of bacteria bed 61 for a period of time after, the surface of bacteria bed 61 will form VOCs domesticated organisms film 63, VOCs domesticated organism films After 63 reach growth balance, you can self-loopa is formed, without supplementing VOCs acclimated microorganism suspensions through nutrient solution storage tank 8 again.If VOCs concentration deficiency in cleaned gas, growth balance is caused to receive influence, can be by nutrition liquid storage tank to being added in system Nutrient solution keeps growth balance.

Reverse washing adsorbent equipment 4 bottom, the bottom of secondary absorption water washing device 5 and the bottom of biomembrane purification device 6 Biofilter 9 is provided with, the biofilter 9 is interconnected, and passes through a water between the biofilter 9 and spray equipment 7 EGR 10 is washed to connect.By biofilter 9, the VOCs acclimated microorganism suspensions that spray equipment 7 sprays are collected in biology Water washing cleaning system bottom；Water washing cycles device 10 includes water pipe and water circulating pump, can be by biology by water washing cycles device 10 Again pump to spray equipment 7, realizes washing self-loopa work to suspension in filter tank 9.

The bottom of biofilter 9 is provided with sewage draining exit 91.After equipment long-play, as biofilter 9 has been enriched More harmful substance, can be through the discharge part soiling solution of sewage draining exit 91, and by nutrition liquid storage tank 8 to the liquid in biofilter 9 Carry out liquid feeding dilution.And the soiling solution discharged carries out harmless treatment through sewage disposal device.

The reverse middle part of washing adsorbent equipment 4 is provided with the filtering layer mounting groove 44 of four, and the filtering layer mounting groove 44 is opened Closure 45 is provided with mouthful, the diatomite ceramic adsorbent layer 42 is mounted in filtering layer mounting groove 44.Adsorb certain dense The corresponding VOCs of degree diatomite ceramic adsorbent layer 42 can take out and carry out by opening closure 45 from filtering layer mounting groove 44 Desorption processing, reclaims available organic compound and makes the reusable edible of diatomite ceramic adsorbent layer 42.Because multiple filtering layers are pacified Diatomite ceramic adsorbent layer 42 is mounted in tankage 44, by diatomite ceramic adsorbent layer 42 take out desorption flow can replace into OK, the normal work of biological water washing cleaning system can't be influenceed.Meanwhile also can be when not needing physical absorption recovery by diatom Native ceramic adsorbent layer 42 all takes out, and improves air flow rate.

Described its material of bacteria bed 61 is inertia porous aggregate.Inertia porous aggregate such as modified zeolite, due to compared with Big hole space and surface area, its surface are quite suitable for the growth of microbial film, can effectively lift biodegradable effect.

Anti-explosion temperature-controlled device 11 is provided with the biomembrane purification device 6.Anti-explosion temperature-controlled device 11 can detect regulation life the moment Temperature in thing film purifying device 6, maintain the growth balance of VOCs domesticated organisms film 63.

Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to Assert that specific implementation of the present utility model is confined to these explanations, i.e., it is all to make equivalent changes and modifications according to the application scope, All should still it belong in the utility model covering scope.

Claims

1.VOCs biodegradation washing systems, it is characterised in that cleaned including blower fan, heat-exchange device, deduster and Biological water Change system, the blower fan, heat-exchange device, deduster and biological water washing cleaning system are sequentially connected by air channel；

The biological water washing cleaning system includes reverse washing adsorbent equipment, secondary absorption water washing device and biomembrane purification dress Put, spray equipment is provided with the top of the reverse washing adsorbent equipment, secondary absorption water washing device and biomembrane purification device；

The reverse washing adsorbent equipment bottom is provided with the first air inlet, and first air inlet connects deduster, reverse water Wash in the middle part of adsorbent equipment and diatomite ceramic adsorbent layer is installed, its top is provided with exhaust outlet；

The second air inlet is provided with the top of the secondary absorption water washing device, is connected with exhaust outlet by air channel, secondary absorption water Active carbon filler layer is provided with the middle part of cleaning device, the connection corresponding with biomembrane purification bottom of device of its bottom；

Bacteria bed is provided with the middle part of the biomembrane purification device, is filled at the top of biomembrane purification device away from secondary absorption washing The place of putting is provided with delivery outlet.

2. VOCs biodegradations washing system according to claim 1, it is characterised in that the spray equipment is connected with battalion Nutrient solution storage tank.

3. VOCs biodegradations washing system according to claim 1, it is characterised in that the reverse washing adsorbent equipment Bottom, secondary absorption water washing device bottom and biomembrane purification bottom of device are provided with biofilter, the biofilter phase It is intercommunicated.

4. VOCs biodegradations washing system according to claim 3, it is characterised in that the biofilter fills with spray Connected between putting by a water washing cycles device.

5. VOCs biodegradations washing system according to claim 3, it is characterised in that the biofilter bottom is set There is sewage draining exit.

6. VOCs biodegradations washing system according to claim 1, it is characterised in that the reverse washing adsorbent equipment Middle part is provided with the filtering layer mounting groove that quantity is more than two, and the filtering layer mounting groove opening is provided with closure, the diatom Native ceramic adsorbent layer is mounted in filtering layer mounting groove.

7. VOCs biodegradations washing system according to claim 1, it is characterised in that the bacteria bed surface covering There are VOCs domesticated organism films.

8. VOCs biodegradations washing system according to claim 1, it is characterised in that its material of the bacteria bed is Inertia porous aggregate.

9. VOCs biodegradations washing system according to claim 1, it is characterised in that on the biomembrane purification device It is provided with anti-explosion temperature-controlled device.