CN101284208A - Kitchen rubbish high temperature organic exhaust gas integration biological treatment device and process - Google Patents
Kitchen rubbish high temperature organic exhaust gas integration biological treatment device and process Download PDFInfo
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- CN101284208A CN101284208A CNA2007103060112A CN200710306011A CN101284208A CN 101284208 A CN101284208 A CN 101284208A CN A2007103060112 A CNA2007103060112 A CN A2007103060112A CN 200710306011 A CN200710306011 A CN 200710306011A CN 101284208 A CN101284208 A CN 101284208A
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- 241000196324 Embryophyta Species 0.000 claims 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention relates to the technology field of high-temperature organic waste gas treatment for restaurant garbage, and provides an integrated biological treatment device for high-temperature organic waste gas and a method. The treatment device mainly comprises a condensing unit and a biological deodorization device, wherein, the condensing unit comprises a pipeline, a blower, a condenser, and a steam separator; the biological deodorization device in sequence comprises a gas distribution layer, an oil selecting layer, the gas distribution layer, an inactive filler layer, the gas distribution layer, a biological filler layer, and a PP vegetation layer from bottom to top. The method used for processing comprises the following steps: the high-temperature organic waste gas of 90 to 120 DEG C is processed through concreting and steam-water separation through the condensing unit so as to lead the temperature thereof to reach 25 DEG C to 40 DEG C; part of waste gas such as water-soluble hydrogen sulfide, ammonia gas, etc. is removed; then the waste gas passes through the three layers of gas distribution layers which are arranged from bottom to top in a biological deodorization pool and also passes through the three filler layers and the vegetation layer which are positioned among the gas distribution layers, odorous gases such as oil, organic waste gas, etc. in the waste gas is removed successively through the microbial adsorption, absorption and degradation action in each filler layer, so that the waste gas is transformed into the matters such as non-toxic and harmless CO2, H2O, cytoplasm, reductive S, resolvable nitrate salts, etc.
Description
Technical field
The present invention relates to a kind of exhaust gas treatment technology, particularly relate to the device and method that a kind of kitchen rubbish high temperature organic exhaust gas is handled.
Technical background
Changing food waste is a kind of moisture height, the abundant organic waste of content of organics, in order to make changing food waste minimizing, innoxious, resource, at first need changing food waste is dehydrated processing, and then reject foreign material such as glass, stone, plastics, so that make the organic matter in the changing food waste can further be processed into fertilizer or feed.The changing food waste dry run is to carry out in airtight drier, in order to guarantee dryingization efficient, the mummification temperature need be controlled between 90 ℃～120 ℃, the moisture gasification is steam under this temperature, some volatile organic matter decomposition in the changing food waste can discharge materials such as acetate, ethyl sulfide, ethyl mercaptan, hydrogen sulfide, styrene, these high temperature organic exhaust gas often have pungent odour, if directly being disposed to atmosphere can pollute air ambient, very harmful to health, further influence people's quality of life.
The processing method that kitchen rubbish high temperature organic exhaust gas is general has firing method, chemical method, active carbon adsorption, biological filter process etc.Firing method is promptly introduced the combustion chamber removal stink that directly burns to high temperature organic exhaust gas, yet because organic exhaust gas high humidity, heat are low, the burning time of staying is short, odorous gas is removed not exclusively, if guarantee fully burning, need to replenish a large amount of natural gases, diesel oil, gasoline etc., disposal cost will significantly increase.The reproducibility sulfuration thing that contains in the organic exhaust gas, in combustion process, be converted into oxysulfide, combine formation sulfurous acid, sulfuric acid based material with water, combustion apparatus is had stronger corrosivity, this also is one of reason of restriction firing method processing high temperature organic exhaust gas application.In addition, produce secondary pollutions such as flue dust, tail gas during burning, be difficult to reach the discharging standards requirement sometimes,, also will cause environmental pollution as not dealing carefully with.
The chemistry rule contains in the solution of some chemical composition for organic exhaust gas is fed, or chemical agent directly sprayed into organic exhaust gas outlet, make some composition reaction in chemical agent and the organic exhaust gas, absorption or absorption portion odorous substance, as acid solution can with dissolubility Ammonia substance reaction, aqueous slkali can with waste gas reactions such as hydrogen sulfide, some water-soluble substanceses are also absorbed by aqueous solution absorption in this process, thereby the discharge capacity of such material in the minimizing organic exhaust gas, but because component complexity in the organic exhaust gas, osmophore is abundant, simple one or more chemisorbed absorbing mediums are difficult to remove simultaneously all the components in the foul smell, and absorption absorption process reagent consumption amount is often bigger, expense is higher, and making chemical method be used for the kitchen rubbish high temperature organic exhaust gas processing has significant limitation.In addition, the aqueous solution that the organic exhaust gas after the chemisorbed forms needs further purified treatment to discharge, otherwise can cause secondary pollution.
Promptly by the odorous substance absorption of activity carbon carrier to hot and humid degree, activated carbon adsorbs saturated active carbon adsorption easily, regeneration or replacing activated carbon, and it is all very high to remove the organic exhaust gas expense.
If kitchen rubbish high temperature organic exhaust gas directly enters traditional biological deodorizing device such as biofilter, bio-trickling filter, biological scrubbing tower, not only cause the hot deactivation of microbial degradation bacterium, and the grease in the organic exhaust gas can stop up the filtrate in the odor removal, cause intake resistance to increase, whole system can't normally be moved.
Summary of the invention
The objective of the invention is to overcome the shortcoming that exists in the prior art, a kind of high temperature organic exhaust gas integration bioremediation and device are provided, promptly according to the characteristic of kitchen rubbish high temperature organic exhaust gas, by integral process processes such as heat exchange condensation, grease absorption, biodegradations, make waste gas be converted into the technology of nontoxic CO2, H2O etc.
This device mainly comprises condensing unit and biological deodorizing device; Condensing unit comprises pipeline, blower fan, condenser, the carbonated drink separation equipment.The main effect of condensing unit is that high temperature organic exhaust gas is collected by blower fan, and be transported to and carry out condensation cooling in the condenser, make gas temperature after the cooling satisfy the condition of work of biological deodorizing device, steam is condensed, and condensed water separates from gas by the carbonated drink separation equipment and discharges.Biological deodorizing device comprises gas distribution layers, grease selection layer, gas distribution layers, inert filler layer, gas distribution layers, biologic packing material layer and PP vegetable layer from bottom to top successively.Cloth gas-bearing formation in the biological deodorizing device is made of PC porous net, and thickness is 5～20cm, and the pressure that the cloth gas-bearing formation can bear is 1～5 * 10
3Kg/m
2Filler is the liposuction sponge in the grease selection layer, inoculation grease degradation bacteria such as bacillus etc. on the sponge; This layer thickness is 10～50cm.The filler of biologic packing material layer is rich in microorganism for to be formed by the aerobic composting of changing food waste in the filler, contain 10 in every gram rubbish
6～10
8Individual bacterium, fungi etc., and the filler content of organic matter is 5～25%, the biologic packing material layer thickness is 10～50cm.The inert filler layer is plastic hoop, cavernous body, PVC net, and inoculated fungi on the filler, packing layer thickness are 10～50cm.On biologic packing material layer top, the PP vegetable layer is housed, promptly in the PP net, fill composting production and fertile soil, the composting production kind is implanted with vegetation such as China pink, and the height of vegetable layer is 30～50cm.Humidity in biological deodorizing device, pH, temperature etc. are by detections such as hygronom, pH meter, thermometers, and employing PLC control.
The method that kitchen rubbish high temperature organic exhaust gas of the present invention is handled is achieved by the following scheme: the high-temp waste gas that produces in the kitchen garbage drying process is collected and delivered in the above-mentioned kitchen rubbish high temperature organic exhaust gas treating apparatus and handle by blower fan.Kitchen rubbish high temperature organic exhaust gas treating apparatus method can be: the high-temp waste gas that with temperature is 90～120 ℃ is after the condensing unit condensation, temperature is reduced to 25 ℃～40 ℃, water vapor condensation in the organic exhaust gas is a water droplet, and by the carbonated drink separation equipment water droplet is separated from gas.Residual gas enters in the biological deodorizing device, selects layer, cloth gas-bearing formation, inert filler layer, cloth gas-bearing formation, biologic packing material layer and PP vegetable layer through cloth gas-bearing formation, grease, absorbs through multilayer to remove waste gas, thereby reduces the waste gas odor strength.
Particularly, the method that a kind of kitchen rubbish high temperature organic exhaust gas is handled is that high temperature organic exhaust gas is sent into condenser by blower fan, make EGT be reduced to 25 ℃～40 ℃ from 90 ℃～120 ℃, water vapor condensation in the organic exhaust gas is a water droplet, and condensing drip is opened and discharged by the carbonated drink separation equipment is separated from the gas.Cooling back organic exhaust gas imports biological deodorizing device by blower fan pressurization back.
Biological deodorizing device utilize pollutant in the waste gas from the gas phase main diffusion to filler outer field moisture film and being absorbed by filler, oxygen also enters moisture film by gas phase simultaneously, the final adsorbed microbial consumption oxygen of filling surface and pollutant is decomposed, the activity of microorganism is transformed into simple inorganic matter CO with harmful substance in the waste gas
2, H
2O, cytoplasm, reproducibility S, dissolubility nitre attitude salt etc.
Waste gas enters in the biological deodorizing treating apparatus, at first arrives grease through the cloth gas-bearing formation and select decomposition layer in uphill process, and this part filler is the liposuction material, and inoculating grease degradation bacteria such as bacillus etc. simultaneously can the fast Absorption grease, and effectively cuts grease and be CO
2And H
2O.
After waste gas is selected decomposition layer through grease, continue to rise to the inert filler layer through the cloth gas-bearing formation, inert filler is that density is little, porosity is high, blast is little, is difficult for by biodegradable plastic ring, cavernous body, PVC net etc., inert filler is under suitable moisture, temperature conditions, inoculation biodegradation bacterium, absorption, absorption, decomposition organic exhaust gas.
Waste gas after the inert filler layer is handled enters biologic packing material layer 10 behind the gas distribution again through the cloth gas-bearing formation, and biologic packing material is rich in microorganism for to be formed by the changing food waste composting in the filler, contain 10 in every gram rubbish
6Individual bacterium, fungi etc., the content of organic matter is about 5%～25% in the filler, sustainable being used for for the microbial reproduction growth.
On biologic packing material layer top, the PP vegetable layer also is housed, promptly in the PP net, fill compost product and fertile soil, the composting production growth has vegetation such as China pink, vegetation root system secretion is of a great variety, and energy is waste gas such as absorbed nitrogen, phosphorus, sulfide effectively, thereby removes waste gas, in the entire reaction device, vegetation growth can change the sense organ of emission-control equipment simultaneously.
Humidity in this biological deodorizing device, pH etc. detect by on-line detector, transfer of data is gone into central control room PLC, humidity, pH, temperature are respectively 60%～85%, 6～8,25 ℃～40 ℃, the scope that exceeds setting, to start controls such as humidity and pH voluntarily, start and spray humidifying device, between being controlled at, utilize and spray humidifying device sprinkling nutrient solution in advance to regulate.
It is low that the present invention has energy consumption, and expense is low, and the treatment effeciency height starts soon, directly after the inoculation, need not the domestication cultivation and add nutrient solution, and easy to operate, whole device can be realized unattended automatic operating.The maintenance cost of whole system is extremely low, is the technology that is fit to very much the kitchen rubbish high temperature exhaust-gas treatment.
Kitchen rubbish high temperature organic exhaust gas is after biological deodorizing is handled, and the stink clearance is greater than 96%, and the ammonia clearance is greater than 98%, and the hydrogen sulfide removal rate makes purified gas satisfy country's " odorant pollutant discharge standard " greater than 97%.
Description of drawings
Fig. 1 is the schematic diagram of the kitchen rubbish high temperature organic exhaust gas integration biological treatment complexes that propose of the present invention
Drier 1; Steam- water separator 2,5; Blower fan 3,6; Condenser 4; Gas distribution layers 7,9,11; Grease is selected layer 8; Inert filler layer 10; Biological deodorizing layer 12; Vegetable layer 13
The specific embodiment
Below in conjunction with embodiment apparatus and method of the present invention are described in further detail.
Embodiment 1
Integration biological treatment device of the present invention mainly comprises condensing unit and biological deodorizing device.Condensing unit comprises steam- water separator 2,5, blower fan 3,6, condenser 4.High temperature organic exhaust gas through drier 1 is collected through pipeline by the blower fan sharp draft, be transported to and carry out the condensation cooling in the condenser, steam is condensed from gas, separate discharge by the carbonated drink separation equipment, gas temperature is reduced to the condition of work of biological deodorizing device, is delivered to biological deodorizing device by blower fan.This device is that gas distribution layers 7, grease are selected layer 8, gas distribution layers 9, inert filler layer 10, gas distribution layers 11, biologic packing material layer 12, vegetable layer 13 from bottom to top.Humidity in the biological deodorizing device, pH, temperature are controlled at 60%～85%, 6～8,25 ℃～40 ℃ respectively, detect by on-line detector, adopt the control of PLC central control room, exceed the scope of setting, utilize and spray humidifying device sprinkling nutrient solution in advance to regulate.Gas rises along the bottom of device gas distribution, and arrive grease and select layer, the grease degradation bacteria fast Absorption grease of this part filler inoculation, effectively cutting grease is materials such as CO2 and H2O; Continue to rise process cloth gas-bearing formation to the inert filler layer, inert filler by the biodegradation bacterium, adsorbs, absorbs, decomposes organic exhaust gas under suitable moisture, temperature conditions.Waste gas after the inert filler layer is handled enters the biologic packing material layer behind the gas distribution again through the cloth gas-bearing formation, biologic packing material is formed by the changing food waste composting, be rich in bacterium, fungi etc. in the filler, the activity of microorganism is transformed into simple inorganic matter, H2O, cytoplasm, reproducibility S, dissolubility nitre attitude salt etc. with harmful substance in the waste gas.On biologic packing material layer top, the PP vegetable layer is housed, promptly in the PP net, fill compost product and fertile soil, the vegetation such as China pink that growing on the composting production, vegetation root system secretion is of a great variety, effectively waste gas such as absorbed nitrogen, phosphorus, sulfide.
Set up the kitchen rubbish high temperature organic exhaust gas treating apparatus of 8000m3/h in the Xining according to this method Jieshen Food Garbage Treating Industry Co., Ltd., Qinghai, wherein heat exchange cooling damping device is high 9 meters, and diameter is 6 meters, gas residence time T=2.5 second; Biological deodorizing device dischargeable capacity 45m3 (8m * 2m * 3m), void tower time of staying 20s.The air inlet concentration of hydrogen sulfide is 1～15mg/l, and ammonia is 1～10mg/l, and TVOC is 0.1～6.5mg/l, and gas temperature is 90 ℃～120 ℃, and humidity is 65%～86%; Concentration of hydrogen sulfide in the gas after treatment is 0.01～0.1mg/l, and ammonia is 0.01～0.1mg/l, and TVOC does not detect, and gas temperature is 35 ℃, and humidity is 75%.When whole device moves, unmanned, Maintenance free, data in real time is transferred to central control room.Kitchen rubbish high temperature organic exhaust gas transforms for materials such as nontoxic CO2, H2O, cytoplasm, reproducibility S, dissolubility nitre attitude salt; The stink clearance is greater than 96%, and the ammonia clearance is greater than 98%, and the hydrogen sulfide removal rate makes purified gas satisfy country's " odorant pollutant discharge standard " greater than 97%.
Claims (14)
1, a kind for the treatment of apparatus of kitchen rubbish high temperature organic exhaust gas is characterized in that: this device mainly comprises condensing unit and biological deodorizing device; Condensing unit comprises pipeline, blower fan, condenser, steam-water separator; Biological deodorizing device comprises gas distribution layers, grease selection layer, gas distribution layers, inert filler layer, gas distribution layers, biologic packing material layer and PP vegetable layer from bottom to top successively.
2, the device of a kind of kitchen rubbish high temperature organic exhaust gas processing according to claim 1, it is characterized in that: the gas distribution layers in the described biological deodorizing device is made of PC porous net, and thickness is 5～20cm, and the pressure that the cloth gas-bearing formation can bear is 1～5 * 10
3Kg/m
2
3, the device of a kind of kitchen rubbish high temperature organic exhaust gas processing according to claim 1 is characterized in that: filler is the liposuction sponge in the grease selection layer in the described biological deodorizing device, inoculation grease degradation bacteria such as bacillus etc. on the sponge; This layer thickness is 10～50cm.
4, the device of a kind of kitchen rubbish high temperature organic exhaust gas processing according to claim 1, it is characterized in that: the filler of the biologic packing material layer in the described biological deodorizing device is for to be formed by the aerobic composting of changing food waste, and the biologic packing material layer thickness is 10～50cm.
5, the device of a kind of kitchen rubbish high temperature organic exhaust gas processing according to claim 1, it is characterized in that: the inert filler layer in the described biological deodorizing device is plastic hoop, cavernous body, PVC net, inoculated fungi on the filler, packing layer thickness are 10～50cm.
6, the device of a kind of kitchen rubbish high temperature organic exhaust gas processing according to claim 1, it is characterized in that: in the described biological deodorizing device, on biologic packing material layer top the PP vegetable layer is housed, promptly in the PP net, fill composting production and fertile soil, plant vegetation such as being implanted with China pink on the composting production, the height of vegetable layer is 30～50cm.
7, the device of a kind of kitchen rubbish high temperature organic exhaust gas processing according to claim 1 is characterized in that: the humidity in the described biological deodorizing device, pH value, temperature etc. are by detections such as hygronom, pH meter, thermometers, and employing PLC control.Humidity, pH value, temperature are controlled at 60%～85%, 5～9,25 ℃～40 ℃ respectively.
8, a kind of method of kitchen rubbish high temperature organic exhaust gas processing is characterized in that: use each described kitchen rubbish high temperature organic exhaust gas treating apparatus among the claim 1-7.
9, method according to claim 8, it is characterized in that: with temperature is that 90 ℃～120 ℃ high-temp waste gas are after condenser condenses, be reduced to 25 ℃～40 ℃, water vapor condensation in the organic exhaust gas is a water droplet, condensate water is discharged through steam-water separator, waste gas enters in the biological deodorizing device again, thereby reduces the waste gas odor strength.
10, according to Claim 8 or 9 described methods, it is characterized in that: condensed waste gas enters biological deodorizing device, and it is the liposuction material that the grease in the device is selected a layer filler, inoculates the grease degradation bacteria simultaneously and comes the fast Absorption grease, and effectively be decomposed into CO
2And H
2O.
11, according to Claim 8 or 9 described methods, it is characterized in that: condensed waste gas enters biological deodorizing device, it is plastic hoop, the PVC net of corrosion resistant that inert filler in the device is selected layer, filler is that density is little, porosity is high, blast is little, is difficult for by biodegradation, inert filler is under suitable moisture, temperature conditions, inoculation biodegradation bacterium, absorption, absorption, decomposition organic exhaust gas.
12, according to Claim 8 or 9 described methods, it is characterized in that: condensed waste gas enters biological deodorizing device, is rich in microorganism in the biological packing layer in the device, contains 10 in every gram rubbish
6～10
8Individual bacterium, fungi etc., and filler is organic abundant, sustainable being used for for the microbial reproduction growth.
13, method according to claim 12 is characterized in that: on biological packing layer top, the PP vegetable layer is housed, promptly fills compost product and fertile soil in the PP net, the composting production growth has vegetation such as China pink.
14, method according to claim 9 is characterized in that: the humidity in the biological deodorizing device, pH value, temperature are controlled at 60%～85%, 6～8,25 ℃～40 ℃ respectively; Exceed setting range, will start flusher sprinkling nutrient solution automatically and be regulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007103060112A CN101284208B (en) | 2007-12-28 | 2007-12-28 | High temperature organic exhaust gas integration biological treatment device and process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007103060112A CN101284208B (en) | 2007-12-28 | 2007-12-28 | High temperature organic exhaust gas integration biological treatment device and process |
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| Publication Number | Publication Date |
|---|---|
| CN101284208A true CN101284208A (en) | 2008-10-15 |
| CN101284208B CN101284208B (en) | 2012-06-13 |
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| CN108191464A (en) * | 2018-01-24 | 2018-06-22 | 中国农业科学院农业环境与可持续发展研究所 | A kind of compost foul smell condensation water collection system |
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| CN106693686A (en) * | 2016-12-22 | 2017-05-24 | 上海复旦水务工程技术有限公司 | Novel kitchen waste indoor waste gas treatment device and method |
| CN107234123A (en) * | 2017-06-05 | 2017-10-10 | 浙江利欧环境科技有限公司 | The processing method and equipment of kitchen garbage |
| CN107715647A (en) * | 2017-06-17 | 2018-02-23 | 江苏奔拓电气科技有限公司 | A kind of kitchen garbage organic waste gas treatment device and its application process |
| CN108191464A (en) * | 2018-01-24 | 2018-06-22 | 中国农业科学院农业环境与可持续发展研究所 | A kind of compost foul smell condensation water collection system |
| CN108191464B (en) * | 2018-01-24 | 2023-05-12 | 中国农业科学院农业环境与可持续发展研究所 | Compost odor condensate water collecting system |
| CN110274242A (en) * | 2018-03-14 | 2019-09-24 | 格林美股份有限公司 | A kind of hazardous waste processing system |
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