CN101284209B - method and system for purifying odor and exhaust gas by liquid phase and solid phase biological integration - Google Patents
method and system for purifying odor and exhaust gas by liquid phase and solid phase biological integration Download PDFInfo
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- CN101284209B CN101284209B CN2008100616766A CN200810061676A CN101284209B CN 101284209 B CN101284209 B CN 101284209B CN 2008100616766 A CN2008100616766 A CN 2008100616766A CN 200810061676 A CN200810061676 A CN 200810061676A CN 101284209 B CN101284209 B CN 101284209B
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Abstract
The invention discloses a liquidoid-solidoid biological integration method for purifying odor and waste gas, and a system. An odor and waste gas source is coupled in the bottom of a liquidoid biofilter filled with medium and water; the top of the liquidoid biofilter is connected with an air intake branch which is evenly distributed on the bottom of a solidoid biofilter and provided with an air outlet; the top of the liquidoid biofilter is connected with an inlet branch, and the bottom thereof is connected with a drainpipe; interstitial substance is filled in the solidoid biofilter, in which plants are planted. The odor and waste gas enters in the liquidoid biofilter, the contained pollutants are dissolved in water and is degraded by water-soluble microorganisms attached to the medium and the dissociative water-soluble microorganisms; then the odor and waste gas enters in the solidoid biofilter and is purified under the physical sorption of the interstitial substance and the degradation effect of the microorganisms, and then is expelled from the upper part of the solidoid biofilter; the liquidoid biofilter discharges sewage and equivalent clean water is replenished; the discharged sewage is used for irrigating the plants in the solidoid biofilter again. The liquidoid-solidoid biological integration method and the system are used in the purification treatment of the odor and waste gas.
Description
Technical field
The present invention relates to the purification method of foul smell, waste gas, especially relate to the method and system of a kind of liquid phase and solid phase biological integration odor and exhaust gas purifying.
Background technology
Foul smell and waste gas are prevalent in industrial and agricultural production, environmental project treatment facility and the daily life, produce foul smell and maximum industry and the places of waste gas at present and comprise livestock and poultry cultivation, wastewater treatment, solid waste processing, food chemical industry, rubber leather industry etc., atmospheric environment is caused very big pollution, and ecological environment and health in serious harm.The complicated component of odor and exhaust gas, different along with the difference that produces the source, based on ammonia, hydrogen sulfide, amine, lower fatty acid etc., composition reaches hundreds of as the foul smell of livestock and poultry farm.In the process that wastewater and waste materials is handled,, all can further produce more various, the complicated more odor and exhaust gas of composition as solid refuse landfill yard, garbage burning factory, sewage treatment plant, dung yard, anaerobic fermentation system etc.One of the biggest problem in the industrial especially generation of odor and exhaust gas, pollutant components such as various nitrogen oxide, oxysulfide are the main arch-criminals that acid rain forms.
The complexity of odor and exhaust gas composition makes intractability very big, traditional odor and exhaust gas processing method mainly is physics, chemical method, as physisorphtion, chemical absorption method and Production by Catalytic Combustion Process etc., the investment of these processing methods is big, complicated operation, operating cost height, but also cause the secondary pollution that is difficult to administer again probably, need frequent the replacement as the sorbing material after reaching capacity in the physisorphtion, it is very big to handle these discarded sorbing material difficulty; Chemical absorption method will consume a large amount of chemicals, and its product does not pollute the environment equally as treated.Especially to the odor and exhaust gas of some low concentrations, because organic concentration wherein is too low, do not had recovery value, use conventional method purified treatment difficulty is big, expense is high.
Biofiltration process is the emerging technology of odor and exhaust gas process field, because of its cost is low, simple to operate, the technology cleaning is favored, has become the focus of current research.Compare with traditional physics, chemical method, biofiltration process more is applicable to the odor and exhaust gas processing of big flow, low concentration.The principle of biofiltration is to utilize various microorganisms that the various harmful components in the odor and exhaust gas are converted into harmless material, ammonia can be converted into nitrate as nitrobacteria, the sulfuration bacterium can be converted into sulfate with the material of sulfur-bearing, thereby reaches the purpose of improvement.In present research, the environment of biofiltration process generally all is applied with single-phase form, comprises with water being the liquid phase biofiltration process of carrier and the solid phase biological filtration method that solid state substrate constitutes.In addition, the general technology only degradation by microorganism transforms the pollutant of odor and exhaust gas, does not consider further processing and utilization to catabolite.Therefore, unavoidably there is such problem: (A) be suitable for the suitable property microorganism of suitable property microorganism of water that grows in the liquid phase and the gas that is suitable for growing in the solid phase and all be widespread in nature, can effectively degrade to some kinds of pollutants in the odor and exhaust gas, but, only rely on all thorough odor and exhaust gas purifyings of suitable property microorganism of water or the suitable property microorganism of gas because the composition of odor and exhaust gas is very complicated; (B) microorganism is degraded to innocuous substance with various harmful components, these catabolites only fraction are used to make up new life entity by microorganism, all the other major parts remain, be not used and be wasted, also suppress the function of microorganism when the content of degradation products of these accumulation is too high even produce toxic action, unprocessed random discharging can cause the secondary pollution of regional area especially.Present technology all fails to provide the method that addresses these problems.
Summary of the invention
The object of the present invention is to provide the method and system of a kind of liquid phase and solid phase biological integration odor and exhaust gas purifying, can not compatible other phase microorganisms when utilizing single-phase biofiltration to handle odor and exhaust gas with solution, thoroughly odor and exhaust gas purifying, microbial degradation product can't be utilized can the inhibition microbial function etc. technical barrier.
The technical solution adopted for the present invention to solve the technical problems is:
One, liquid phase of the present invention and solid phase biological integration odor and exhaust gas purifying method:
In airtight liquid phase biofilter, fill the medium of water and attached growth of microorganisms, can the degrade suitable property microorganism of one or more water of the contained pollutant of odor and exhaust gas of inoculation, in the solid phase biological filter, fill microorganism and the required matrix of plant growth, inoculation can degrade the suitable property microorganism of one or more gas of the contained pollutant of odor and exhaust gas and plantation one or more can absorb the plant of product newly-generated in the microbial degradation odor and exhaust gas process, odor and exhaust gas is imported airtight liquid phase biofilter earlier during use, contained pollutant is soluble in water and be attached to the suitable property microbial degradation of water of medium and free state, import the solid phase biological filter bottom again, physisorption through matrix, the degradation of microorganism is purified and discharges from solid phase biological filter top, every day in service is from liquid phase biofilter discharging addle and replenish the clear water of equivalent, the addle of discharging is collected the plant that is used further to irrigate the solid phase biological filter, thereby the microbial degradation product is further absorbed as the required nutriment of growth by plant, the stem of harvesting plant when being forced to substitute during results or because of climate reasons, leaf and root are used, plant new plant again, thereby make odor and exhaust gas and catabolite be able to thorough purification.
Two, liquid phase of the present invention and solid phase biological integration odor and exhaust gas purifying system:
The present invention includes air intake pump, flowmeter, the air inlet main is taken the air intake branch of pore out of, is filled with the liquid phase biofilter of medium and water, is filled with the solid phase biological filter of matrix and plantation plant; The odor and exhaust gas source is through air intake pump, flowmeter, the air inlet main inserts from the bottom of the liquid phase biofilter that is filled with medium and water, the top of liquid phase biofilter is connected by the air inlet main more than one or one and the bottom that is evenly distributed on the solid phase biological filter, the air intake branch of taking pore out of, the top of liquid phase biofilter connects the water inlet pipe of a band valve, the bottom of liquid phase biofilter connects the drainpipe of a band valve, be filled with matrix in the solid phase biological filter, plant plant on the matrix.
The size of described liquid phase biofilter and solid phase biological filter is determined 1000～5000 cubic metres of every cubic metre of charge flow rates hourly of solid phase biological filter according to the purification needs of size of building the place and odor and exhaust gas.
The medium that described liquid phase biofilter is filled is one or more a mixture of plastics porous aggregate, sandstone, corrosion resistant string thing, active carbon, inserts behind the water water surface apart from liquid phase biofilter top 0.1～0.8 meter.
The matrix that described solid phase biological filter is filled is mixed by one or more of soil, sandstone, porous aggregate and corrosion resistant string thing.
The quantity of described air intake branch determines that according to the solid phase biological filter size spacing of adjacent air intake branch 4 is 0.5～2 meter, and the diameter of venthole is 1/5～1/2 of a caliber, is provided with one in both sides for per 0.2～2 meter along air intake branch.
The kind of described microorganism is determined with purification needs and weather according to the constituent in odor and exhaust gas source; Product that the kind of plant generates after according to the microbial degradation odor and exhaust gas and weather are determined.
Described porous aggregate is one or more a mixture of haydite, perlite and active carbon.
The useful effect that the present invention has is:
1. filter with simple use liquid phase or solid phase biological and compare, the biological integrated system of two-phase combines the advantage of suitable property microorganism of the water that is suitable for growing and the suitable property microorganism of the gas that is suitable for growing in solid phase in liquid phase, make the microbe species in the system more perfect, improved the applicability of whole cleaning system;
2. the water of liquid phase is with better function to absorption, the interception of all contaminations in the odor and exhaust gas, can more effectively must adsorb, tackle pollutant, can bear the odor and exhaust gas of bigger flow, higher concentration, thereby improves the effect of whole system;
3. the various catabolites of plant absorbing in the solid phase biological filter are purified odor and exhaust gas up hill and dale, gather in the crops plant again and are used, and in time with outside these pollutant discharge systems, do not produce secondary pollution.
The present invention is mainly used in the purified treatment of foul smell, waste gas.
Description of drawings
Fig. 1 is liquid phase of the present invention and solid phase biological integration odor and exhaust gas purifying System planes figure.
Fig. 2 is liquid phase of the present invention and solid phase biological integration odor and exhaust gas purifying system profile.
Among the figure: 1. air intake pump, 2. flowmeter, 3. air inlet main, 4. air intake branch, 5. liquid phase biofilter, 6. medium, 7. water, 8. plant, 9. venthole, 10. solid phase biological filter, 11. matrix, 12. water inlet pipes, 13. drainpipes, A. odor and exhaust gas source.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
As shown in Figure 1 and Figure 2, the present invention includes air intake pump 1, flowmeter 2, air inlet main 3 is taken the air intake branch 4 of pore 9 out of, the liquid phase biofilter 5 of filled media 6 and water 7, the solid phase biological filter 10 of filling substrate 11 and plantation plant 8; Liquid phase biofilter 5 bottoms of sealing are connected with odor and exhaust gas source A by the air inlet main 3 that has flowmeter 2 and air pump 1, the top by air inlet main 3 with link to each other, be evenly distributed on the bottom of solid phase biological filter 10 with air inlet main 3 more than one or one, the air intake branch 4 of taking pore 9 out of is connected with solid phase biological filter 10, water inlet pipe 12, the bottom that the top of liquid phase biofilter 5 also connects a band valve connects the drainpipe 13 of a band valve.
The size of described liquid phase biofilter 5 and solid phase biological filter 10 determines according to the purification needs of size of building the place and odor and exhaust gas source A, 1000～5000 cubic metres of solid phase biological filter 10 every cubic metre of charge flow rates hourly.
The medium 6 that described liquid phase biofilter 5 is filled be one or more a mixture of plastics porous aggregate, sandstone, corrosion resistant string thing, active carbon, inserts water 7 waters surface apart from liquid phase biofilter 5 tops 0.1～0.8 meter afterwards.
The matrix 11 that described solid phase biological filter 10 is filled is mixed by one or more of soil, sandstone, porous aggregate and corrosion resistant string thing.Described porous aggregate is one or more a mixture of haydite, perlite and active carbon.
The quantity of described air intake branch 4 determines that according to solid phase biological filter 10 sizes the spacing of adjacent air intake branch 4 is 0.5～2 meter, and the diameter of venthole 9 is 1/5～1/2 of a caliber, is provided with one in both sides for per 0.2～2 meter along air intake branch 4.
The kind of described microorganism is determined with purification needs and weather according to the constituent of odor and exhaust gas source A; Product that the kind of plant 8 generates after according to the microbial degradation odor and exhaust gas and weather are determined.
Embodiment 1:
1 meter of the length of liquid phase biofilter 5; wide 1 meter; high 2 meters; interior filled plastics porous aggregate is as medium 6; 0.2 meter of the water surface apart from liquid phase biofilter 5 tops; the suitable property Geotrichum saccharomycete of inoculation water; the Hansenula saccharomycete; Nitrobacter bacterium and wax shape bud robe bacillus; 5 meters of solid phase biological filter 10 length; wide 5 meters; high 0.5 meter; the interior filling by 20% soil; 20% fine sand; 20% husk; 20% wood chip; the matrix 11 that 20% haydite mixes; the suitable property Geotrichum saccharomycete of inoculation gas; the Hansenula saccharomycete; Nitrobacter bacterium and wax shape bud robe bacillus; the plant 8 of plantation is perennial Festuca Arundinacea; the flow of air intake pump 1 be 3.0 ten thousand steres/hour; air inlet main 3 is the pvc pipe of 150 millimeters of diameters; air intake branch 4 is the pvc pipe of 50 millimeters of diameters; totally 3; along air intake branch 4 per 0.5 meter venthole that 20 millimeters of diameters are set in both sides; water inlet pipe 12 and drainpipe 13 are the pvc pipe of 50 millimeters of diameters, and respectively connect a valve.
Embodiment 2:
A liquid phase biofilter 5 among the embodiment 1 is used with two or more solid phase biological filter in parallel 10 series connection.
Embodiment 3:
Two or more liquid phase biofilters 5 in parallel among the embodiment 1 are used with 10 series connection of a solid phase biological filter.
Embodiment 4:
With the liquid phase among the embodiment 1 and two or more in parallel uses of solid phase biological integration odor and exhaust gas purifying system, be used to purify foul smell from extensive livestock and poultry farm, each system accepts from the foul smell of a ventilating fan and is purified.
The above-mentioned specific embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change to the present invention makes all fall into protection scope of the present invention.
Claims (8)
1. the method for liquid phase and solid phase biological integration odor and exhaust gas purifying, it is characterized in that: the medium of in airtight liquid phase biofilter, filling water and the suitable property attached growth of microorganisms of water, can the degrade suitable property microorganism of one or more water of the contained pollutant of odor and exhaust gas of inoculation, in the solid phase biological filter, fill suitable property microorganism of gas and the required matrix of plant growth, inoculation can degrade the contained pollutant of odor and exhaust gas the suitable property microorganism of one or more gas and plant the plant that one or more can absorb product newly-generated in the suitable gentle suitable property microbial degradation odor and exhaust gas process of property of water, odor and exhaust gas is imported airtight liquid phase biofilter earlier during use, contained pollutant is soluble in water and be attached to the suitable property microbial degradation of water of medium and free state, import the solid phase biological filter bottom again, the degradation of the gentle suitable property microorganism of physisorption of process matrix is purified and discharges from solid phase biological filter top, every day in service is from liquid phase biofilter discharging addle and replenish the clear water of equivalent, the addle of discharging is collected the plant that is used further to irrigate the solid phase biological filter, thereby the suitable property microbial degradation product of water is further absorbed as the required nutriment of growth by plant, the stem of harvesting plant when being forced to substitute during results or because of climate reasons, leaf and root are used, plant new plant again, thereby make odor and exhaust gas and catabolite be able to thorough purification.
2. the device that is used for described a kind of liquid phase of claim 1 and solid phase biological integration odor and exhaust gas purifying method, it is characterized in that: comprise air intake pump (1), flowmeter (2), air inlet main (3), take the air intake branch (4) of pore (9) out of, be filled with the liquid phase biofilter (5) of medium (6) and water (7), be filled with the solid phase biological filter (10) of matrix (11) and plantation plant (8); Odor and exhaust gas source (A) is through air intake pump (1), flowmeter (2), air inlet main (3) inserts from the bottom of the liquid phase biofilter (5) that is filled with medium (6) and water (7), the top of liquid phase biofilter (5) is connected by the air inlet main (3) more than one or one and the bottom that is evenly distributed on solid phase biological filter (10) and the air intake branch (4) of taking pore (9) out of, the top of liquid phase biofilter (5) connects the water inlet pipe (12) of a band valve, the bottom of liquid phase biofilter (5) connects the drainpipe (13) of a band valve, be filled with matrix (11) in the solid phase biological filter (10), matrix (11) goes up plantation plant (8).
3. the device of a kind of liquid phase according to claim 2 and solid phase biological integration odor and exhaust gas purifying method is characterized in that: the size of described liquid phase biofilter (5) and solid phase biological filter (10) need be determined 1000～5000 cubic metres of every cubic metre of charge flow rates hourly of solid phase biological filter (10) according to the size of building the place and the purification of odor and exhaust gas source (A).
4. the device of a kind of liquid phase according to claim 2 and solid phase biological integration odor and exhaust gas purifying method, it is characterized in that: the medium (6) that described liquid phase biofilter (5) is filled is one or more mixture of plastics porous aggregate, sandstone, corrosion resistant string thing, active carbon, inserts water (7) the back water surface apart from liquid phase biofilter (5) top 0.1～0.8 meter.
5. the device of a kind of liquid phase according to claim 2 and solid phase biological integration odor and exhaust gas purifying method is characterized in that: the matrix (11) that described solid phase biological filter (10) is filled is mixed by one or more of soil, sandstone, porous aggregate and corrosion resistant string thing.
6. the device of a kind of liquid phase according to claim 2 and solid phase biological integration odor and exhaust gas purifying method, it is characterized in that: the quantity of described air intake branch (4) is determined according to solid phase biological filter (10) size, the spacing of adjacent air intake branch (4) is 0.5～2 meter, the diameter of venthole (9) is 1/5～1/2 of a caliber, is provided with one in both sides for per 0.2～2 meter along air intake branch (4).
7. the device of a kind of liquid phase according to claim 2 and solid phase biological integration odor and exhaust gas purifying method is characterized in that: the kind of the suitable gentle suitable property microorganism of property of described water is determined with purification needs and weather according to the constituent of odor and exhaust gas source (A); The kind of plant (8) is fitted the product and the weather that generate behind the gentle suitable property microbial degradation odor and exhaust gas of property according to water and is determined.
8. the device of a kind of liquid phase according to claim 5 and solid phase biological integration odor and exhaust gas purifying method is characterized in that: described porous aggregate is one or more a mixture of haydite, perlite and active carbon.
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| CN2008100616766A CN101284209B (en) | 2008-05-23 | 2008-05-23 | method and system for purifying odor and exhaust gas by liquid phase and solid phase biological integration |
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| CN101284209B true CN101284209B (en) | 2011-06-29 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1445013A (en) * | 2002-03-19 | 2003-10-01 | 广东省微生物研究所 | Biologic deodorization method and its device |
| CN100998883A (en) * | 2006-01-12 | 2007-07-18 | 香港理工大学 | System for treating odour compound in dirty air and its method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1445013A (en) * | 2002-03-19 | 2003-10-01 | 广东省微生物研究所 | Biologic deodorization method and its device |
| CN100998883A (en) * | 2006-01-12 | 2007-07-18 | 香港理工大学 | System for treating odour compound in dirty air and its method |
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