CN102557768B - Circularly-deodorizing granulated conditioner and application thereof in sludge compost - Google Patents
Circularly-deodorizing granulated conditioner and application thereof in sludge compost Download PDFInfo
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- CN102557768B CN102557768B CN201110435912.8A CN201110435912A CN102557768B CN 102557768 B CN102557768 B CN 102557768B CN 201110435912 A CN201110435912 A CN 201110435912A CN 102557768 B CN102557768 B CN 102557768B
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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
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Abstract
The invention belongs to the field of resource recovery of solid waste, relates to a circularly-deodorizing granulated conditioner and the application thereof in sludge compost, solves the problems that nitrogen in the sludge compost is lost, ammonia gas and hydrogen sulfide volatilize to produce odor and the nutrient content of a finished product is relatively low, and also solves the problem that the conventional deodorant is greatly consumed and difficult to be recycled. The circularly-deodorizing granulated conditioner is provided with a wood-based homogeneous body with a particle size of 0.5 to 10bcm, which is adhered with aromatic organic acid such as lactic acid, malic acid, tartaric acid, and the like. The application of the circularly-deodorizing granulated conditioner comprises the steps that (1) sludge is mixed with the conditioner to obtain a mixed material; (2) the mixed material is fermented at a high temperature; and (3) the mixed material is discharged after being fermented and the conditioner is screened out; the screening rate is above 98 percent, the nitrogen loss is reduced by above 65 percent and the nitrogen nutrient content of the finished product is increased by above 25 percent. The circularly-deodorizing granulated conditioner achieves high nitrogen protection efficiency, can circularly deodorize the sludge compost, can be degraded, can regulate the carbon-nitrogen ratio (C/N) of the material and can be applied to the treatment of the sludge compost, and the product quality cannot be reduced by residues.
Description
Technical field
The present invention relates to a kind of deodorizing granulating amendment capable of circulation and the application in sludge composting thereof.
Background technology
In recent years, along with socioeconomic development, industry and sanitary sewage quantity discharged are increasing, build Geng Duo sewage work imperative.Activated sludge process is current most widely used sewage disposal technology, but its maximum drawback is to produce a large amount of excess sludges.By the end of the year 2010, built more than 2500 of China's urban wastewater treatment firm, sewage treatment capacity reaches 1.22 billion cubic meter/skies, and excess sludge production accounts for 0.05～0.07% (in the wet mud of water ratio 80%) of processing the water yield, makes the sludge yield of China be about 3,000 ten thousand tons/year.In excess sludge, contain the trace elements such as the required nutritive element of the plants such as abundant N, P, K and the requisite boron of plant-growth, manganese, aluminium, copper, zinc, contain the hazardous and noxious substances such as a large amount of pathogenic bacterias, parasite (ovum), heavy metal simultaneously, if do not dealt carefully with and disposed, discard in environment, severe contamination water, atmosphere, soil, endanger ecotope and human health, cause the significant wastage of resource simultaneously.
At present, sludge treatment method of disposal mainly contains sanitary landfill, compost, burning etc.Wherein sanitary landfill need take a large amount of soils and a large amount of trucking costs of cost, need further dehydration structural to increase it, and Sludge landfill produce ooze draining, foul smell and also can worsen landfill yard environment around, it is more and more less that proportion is disposed in mud sanitary landfill in recent years.Burning is because moisture percentage in sewage sludge is high, and moisture vaporization needs to consume a large amount of heat energy, causes energy consumption high, and treatment facility investment and running cost are high, but also have smoke pollution problem, are difficult to apply.And compost is to utilize the process that in the artificial promotion refuse of the microorganisms such as the extensive bacterium existing of occurring in nature, actinomycetes, organic matter degradation is the stable matter of becoming thoroughly decomposed.Compost finished product can extensively be applied to farmland, nursery, improves soil nutrient.Compost, because its processing cost is cheap, has the pathogenic bacteria of killing, degradable organic pollutant, heavy metal-passivated activity, produces the effects such as fertilizer, has good Social benefit and economic benefit, one of effective way that has become that recycling sludge processes, is used widely in the whole nation.
But in sludge composting process, toward contact meeting, produce stench gaseous pollutant, as ammonia, hydrogen sulfide etc., severe contamination plant area and surrounding enviroment.And because being converted into ammonia by ammonification, the nitrogen in mud organic matter volatilizees, cause the loss of nitrogen nutrient in composting process, the fertilizer efficiency that reduces compost finished product, directly has influence on the competitive power of compost finished product on fertilizer market, has become the important factor of restriction sludge composting industry development.So controlling ammonia release in sludge composting process is Odor con trol and the key that improves nitrogen retention rate.
Summary of the invention
The object of the present invention is to provide a kind of deodorizing granulating amendment capable of circulation and the application in sludge composting thereof.With reduce nitrogen in sludge high temperature aerobic fermenting process loss, reduce stink that ammonia and hydrogen sulfide volatilization produce, the available nutrient content that increases compost finished product, solved simultaneously existing reodorant consumption large, be difficult to recycle, increase the problem of sludge composting cost.
Deodorizing granulating amendment capable of circulation provided by the present invention is to be attached with the wooden homogeneous body that the organic acid particle diameters such as lactic acid, oxysuccinic acid, tartrate are 0.5～10cm.
Described deodorizing granulating amendment capable of circulation is prepared as follows: dry timber is processed through mechanical means such as crusher, forming machines; obtaining particle diameter is the wooden homogeneous body (spheroid or square) of 0.5～10cm; then wooden homogeneous body is put into concentration and is the dulcet organic acid solns of tool such as 10～60% lactic acid, oxysuccinic acid, tartrate; soak after 5～20 hours and take out; airing or oven dry, to anhydrous, obtain deodorizing granulating amendment capable of circulation.This amendment has that particle diameter is identical with shape, quality is light, good fluidity, easily sieve, can be recycled, good water absorption, adjustable moisture, be easy to microorganic adhesion, inoculation capable of circulation, deodorizing and nitrogen protecting efficiency is high, nothing is adsorbed saturability, deodorizing capable of circulation, degradability, the residual advantage that does not reduce quality product.
The applying step of deodorizing granulating amendment capable of circulation in sludge composting is: (1) in mass ratio 1: mix mud (0.35～1.35) with amendment, obtain mixture, and mixture water ratio is 55～65%; (2) mixture is put into fermentation installation high-temperature aerobic fermentation, and rate of venting is 0.05～6m
3/ (minm
3), maintain mixture temperature 55 ℃ at least 5 days above; (3) fermentation discharging after 9～20 days, then sieves out amendment through trommel screen, and screen rate is more than 98%, and mud nitrogen loss reduces more than 65%, and in compost finished product, nitrogen nutrient content improves more than 25%, completes the application of amendment in sludge composting.Wherein in step (1), the water ratio of mud is 75～85%, and organic content is 40～85%.
In the present invention, deodorizing granulating amendment capable of circulation can be applied to separately in sludge composting; because wooden homogeneous body has larger voidage and loading capacity; utilize absorption and the quick neutralization reaction of organic acid of wooden homogeneous body; by the synergistic effect of physical adsorption and chemical absorption; the fixedly effect of ammonia is improved greatly; reduced the stink that ammonia and hydrogen sulfide volatilization produce, in composting process, nitrogen loss reduces more than 65%, and in compost finished product, nitrogen nutrient content improves more than 25%.Meanwhile, organic acid is introduced, and can regulate the C/N of compost material, and by sludge high temperature aerobic, fermentation provides scarce carbon source, and fixing ammonia can be used as nitrogenous source and is used effectively, and meets the needs of microorganism growth breeding.In addition, amendment material of the present invention is natural organic, and cellulose family content high (can be used as carbon source), has good water-absorbent, microorganic adhesion is good, self understands slow degradation, constantly discharges organic acid, while having guaranteed that the amendment sieving out recycles, can continue to bring into play the fixedly effect of ammonia of quick neutralization, do not need with organic acid soln, to soak again, reduced organic acid consumption, reduced deodorizing and nitrogen protecting cost.
Accompanying drawing explanation
Fig. 1 is deodorizing granulating amendment preparation capable of circulation and the applicating flow chart in sludge composting thereof.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: present embodiment deodorizing granulating capable of circulation amendment is to be attached with the wooden homogeneous body that the organic acid particle diameters such as lactic acid, oxysuccinic acid, tartrate are 0.5～10cm.
In present embodiment, deodorizing granulating amendment preparation process capable of circulation is: dry timber is processed through mechanical means such as crusher, forming machines; obtaining particle diameter is the wooden homogeneous body (spheroid or square) of 0.5～10cm; then wooden homogeneous body is put into concentration and is the dulcet organic acid solns of tool such as 10～60% lactic acid, oxysuccinic acid, tartrate; soak after 5～20 hours and take out; airing or oven dry, to anhydrous, obtain deodorizing granulating amendment capable of circulation.This amendment has that particle diameter is identical with shape, quality is light, good fluidity, easily sieve, can be recycled, good water absorption, adjustable moisture, be easy to microorganic adhesion, inoculation capable of circulation, deodorizing and nitrogen protecting efficiency is high, nothing is adsorbed saturability, deodorizing capable of circulation, degradability, the residual advantage that does not reduce quality product.
Embodiment two: present embodiment deodorizing granulating capable of circulation amendment being applied as in sludge composting: (1) in mass ratio 1: mix mud (0.35～1.35) with amendment, obtain mixture, mixture water ratio is 55～65%; (2) mixture is put into fermentation installation high-temperature aerobic fermentation, and rate of venting is 0.05～6m
3/ (minm
3), maintain mixture temperature 55 ℃ at least 5 days above; (3) fermentation discharging after 9～20 days, then sieves out amendment through trommel screen, and screen rate is more than 98%, and mud nitrogen loss reduces more than 65%, and in compost finished product, nitrogen nutrient content improves more than 25%, completes the application of amendment in sludge composting.Wherein in step (1), the water ratio of mud is 75～85%, and organic content is 40～85%.
If adopt intermittently dynamic fermentation technique in present embodiment, can carry out regular turning mixing, turning frequency is 1～4 day.
In present embodiment, thermophilic fermentation tail gas is the deodorizing filter chamber of main stuffing by the blower fan material that causes to become thoroughly decomposed, and utilizes the odorant pollutant in a large amount of microorganism decomposed tail gas that exist in the material that becomes thoroughly decomposed.
The amendment that sieves out in present embodiment directly or recycle after 0.5～2 day through air-dry processing, can continue to bring into play the fixedly effect of ammonia of quick neutralization, and in sludge composting process, play good microbe inoculation effect.
Embodiment three: what present embodiment was different from embodiment two is that in step (1), the water ratio of mud is 80%, and organic content is 60%.Other step and parameter are identical with embodiment two.
Embodiment four: what present embodiment was different from embodiment two is mud to be mixed with amendment in 1: 0.7 in mass ratio in step (1).Other step and parameter are identical with embodiment two.
Embodiment five: what present embodiment was different from embodiment two is that in step (2), mixture is put into fermentation installation high-temperature aerobic fermentation, and rate of venting is 0.2m
3/ (minm
3), fermenting, to mixture temperature, to regulate rate of venting during higher than 60 ℃ be 1.5m
3/ (minm
3).Other step and parameter are identical with embodiment two.
Embodiment six: what present embodiment was different from embodiment two is fermentation discharging after 16 days in step (3).Other step and parameter are identical with embodiment two.
Claims (6)
1. a deodorizing granulating amendment capable of circulation, it is characterized in that deodorizing granulating amendment capable of circulation is to adhere to lactic acid, oxysuccinic acid, tartaric particle diameter is the wooden homogeneous body of 0.5～10cm, the preparation process of this amendment is: by dry timber through crusher, forming machine processing, obtaining particle diameter is the wooden homogeneous body of 0.5～10cm, described wooden homogeneous body is spheroid or square, then wooden homogeneous body is put into concentration and is 10～60% lactic acid, oxysuccinic acid, in tartaric solution, soak after 5～20 hours and take out, airing or oven dry are to anhydrous, obtain deodorizing granulating amendment capable of circulation, the particle diameter of this amendment and shape are all identical.
2. the application of deodorizing granulating amendment capable of circulation as claimed in claim 1 in sludge composting, it is characterized in that the applying step of amendment in sludge composting is: (1) is 1:(0.35～1.35 in mass ratio) mud is mixed with amendment, obtain mixture, mixture water ratio is 55～65%; (2) mixture is put into fermentation installation high-temperature aerobic fermentation, and rate of venting is 0.05～6m
3/ (minm
3), maintain mixture temperature 55 ℃ at least 5 days above; (3) fermentation discharging after 9～20 days, then sieves out amendment through trommel screen, and screen rate is more than 98%, and mud nitrogen loss reduces more than 65%, and in compost finished product, nitrogen nutrient content improves more than 25%, completes the application of amendment in sludge composting; Wherein in step (1), the water ratio of mud is 75～85%, and organic content is 40～85%; The amendment that sieves out in step (3) directly or recycle after 0.5～2 day through air-dry processing, can continue to bring into play the fixedly effect of ammonia of quick neutralization, and in sludge composting process, play good microbe inoculation effect.
3. the application of deodorizing granulating amendment capable of circulation according to claim 2 in sludge composting, is characterized in that the water ratio of mud in step (1) is 80%, and organic content is 60%.
4. the application of deodorizing granulating amendment capable of circulation according to claim 2 in sludge composting, is characterized in that in step (1) that 1:0.7 mixes mud with amendment in mass ratio.
5. the application of deodorizing granulating amendment capable of circulation according to claim 2 in sludge composting, is characterized in that in step (2), mixture is put into fermentation unit high-temperature aerobic fermentation, and rate of venting is 0.2m
3/ (minm
3), fermenting, to mixture temperature, to regulate rate of venting during higher than 60 ℃ be 1.5m
3/ (minm
3).
6. the application of deodorizing granulating amendment capable of circulation according to claim 2 in sludge composting, is characterized in that step (3) fermentation discharging after 16 days.
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| CN201110435912.8A CN102557768B (en) | 2011-12-23 | 2011-12-23 | Circularly-deodorizing granulated conditioner and application thereof in sludge compost |
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| CN102557768B true CN102557768B (en) | 2014-03-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103910541B (en) * | 2014-04-11 | 2016-08-17 | 河南工业大学 | A kind of method of sludge composting wooden conditioner surface carbonation |
| CN107586155A (en) * | 2017-10-25 | 2018-01-16 | 湖北省农业科学院畜牧兽医研究所 | A kind of new and effective Chicken Manure Compost method |
| CN112705022B (en) * | 2020-12-14 | 2022-06-07 | 华南农业大学 | Open-loop deodorization control method based on livestock and poultry house environment control mechanism |
| CN113213722A (en) * | 2021-06-18 | 2021-08-06 | 赵誉 | Activating excitant for aerobic fermentation bacillus |
| CN113785751B (en) * | 2021-09-07 | 2023-06-20 | 广东百林生态科技股份有限公司 | Bougainvillea spectabilis culture medium and preparation method thereof |
| CN115093254A (en) * | 2022-07-12 | 2022-09-23 | 安徽国祯环卫科技有限公司 | Method for reducing ammonia volatilization and nitrogen loss in kitchen waste composting process by adding organic acid complexing agent |
| CN115259921A (en) * | 2022-07-21 | 2022-11-01 | 安徽国祯环卫科技有限公司 | Combined composting process of saturated deodorant material and kitchen garbage |
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| CN1562912A (en) * | 2004-04-12 | 2005-01-12 | 中国农业大学 | Method for controlling nitrogen loss in procedure of making artificial manure, and dedicated fixing agent |
| CN101016216A (en) * | 2007-01-22 | 2007-08-15 | 桂林工学院 | Highly effective compost method for livestock and fowl breeding castoff using bamboo acetic acid |
| CN101696137A (en) * | 2009-11-05 | 2010-04-21 | 湖南农业大学 | Deodorant nitrogen-conserving conditioner of livestock manure compost and using method |
| CN102030587A (en) * | 2010-10-19 | 2011-04-27 | 中国农业大学 | Method and fixative for controlling nitrogen loss in composting process |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5314187A (en) * | 1976-07-24 | 1978-02-08 | Nitsutou Suishitsu Kaihatsu Ke | Method of treating nitrogenous stinking gases such as ammonia gas |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1562912A (en) * | 2004-04-12 | 2005-01-12 | 中国农业大学 | Method for controlling nitrogen loss in procedure of making artificial manure, and dedicated fixing agent |
| CN101016216A (en) * | 2007-01-22 | 2007-08-15 | 桂林工学院 | Highly effective compost method for livestock and fowl breeding castoff using bamboo acetic acid |
| CN101696137A (en) * | 2009-11-05 | 2010-04-21 | 湖南农业大学 | Deodorant nitrogen-conserving conditioner of livestock manure compost and using method |
| CN102030587A (en) * | 2010-10-19 | 2011-04-27 | 中国农业大学 | Method and fixative for controlling nitrogen loss in composting process |
Non-Patent Citations (1)
| Title |
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