CN103183541A - Method for preparing ecological organic fertilizer from organic waste - Google Patents
Method for preparing ecological organic fertilizer from organic waste Download PDFInfo
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- CN103183541A CN103183541A CN2013101260478A CN201310126047A CN103183541A CN 103183541 A CN103183541 A CN 103183541A CN 2013101260478 A CN2013101260478 A CN 2013101260478A CN 201310126047 A CN201310126047 A CN 201310126047A CN 103183541 A CN103183541 A CN 103183541A
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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
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Abstract
The invention relates to a method for preparing an ecological organic fertilizer from organic waste. The method comprises the following steps of putting the organic waste of which the moisture content is within 95% into a subcritical water reaction kettle, adding biomass which is 0-10% of the organic waste, feeding NaOH to the reaction kettle to adjust the pH to 7.5-8.5; leading steam into the reaction kettle, adjusting the temperature to 150-300 DEG C and the pressure to 0.5-5.0MPa to react for 15-60 minutes; baking or dewatering the product until the moisture content is 50-65%; feeding a microbial agent which is 0.5-1% of weight of the product to the baked or dewatered product; evenly mixing and then piling, heating the pile to 60-70 DEG C after 2-3 days to be stable, and carrying out heat preservation at 55-65 DEG C to maintain for 5-7 days, and turning when the temperature exceeds 65 DEG C and preparing the product until the temperature is not changed. By adopting the method, the limitation of the traditional aerobic fermentation is broken through; pathogene can be thoroughly killed; no bad smell or heavy metal pollution appears; the treatment cost is reduced; the treatment efficiency is improved; and the highest target of resource utilization of the organic waste is achieved.
Description
Technical field
The present invention relates to has the method for ecological organic fertilier in the environmental technology field with organic waste manufacturing.
Background technology
Organic waste mainly comprises municipal sludge, animal excrement, crop residues, food, alcohol, drink production waste, wood working production waste, domestic refuse etc., mainly contain materials such as carbohydrate, protein-based, Mierocrystalline cellulose, hemicellulose and xylogen in these materials, agricultural is had potential utility value.
At present, the treatment process of organic waste mainly contains following several:
1, landfill: method is simple, easy row but because containing objectionable impurities in the waste, can be along with erosion and the seepage flow polluted underground water of rainwater, and landfill need take big place, and contaminate environment is built and the trucking costs height in the landfill place.Waste need dewater to lower water ratio simultaneously, needs to increase the cost of dehydration.
2, burn: build expensive big, incineration plant working cost height, technological design and equipment complexity in addition require also than higher operator's quality and state of the art.Produce obnoxious flavoures such as Dioxins in addition, contaminate environment.
3, building materials utilization (municipal sludge): making brick from sludge, mud potting grain etc., but technology is still immature, is of limited application.
4, compost: can improve the soil, improve the soil utilization, but the compost time is long, generally need about 30 days, and floor space is big, pathogenic agent is killed not thorough, and the foul smell of generation can cause the not passivation of heavy metal in environmental pollution, the waste, contaminated soil.
Summary of the invention
The objective of the invention is to handle the deficiency of method of disposal in order to overcome existing organic waste, provide a kind of organic waste to make the method for ecological organic fertilier, this method adopts the subcritical water technology that organic waste is carried out pre-treatment, and aerobic fermentation is made ecological organic fertilier then.This method is under the situation of not adding any catalyzer, improved the speed of reaction of pretreatment stage, reduced the pollution that catalyzer brings, broken through the limitation of traditional aerobic fermentation, can thoroughly kill pathogenic agent, no foul smell and heavy metal contamination have reduced processing cost, improve processing efficiency, realized the highest goal that reclaiming organic waste utilizes.
The present invention is achieved by the following technical solutions:
Organic waste is made the method for ecological organic fertilier, it is characterized in that carrying out according to the following steps:
One, subcritical water is handled:
(1) organic waste is put in the subcritical water reactor, organic waste weight in wet base percentage is in 95%;
(2) add the biomass of occupying machine waste weight 0～100%.
(3) in reactor, add NaOH, regulate pH to 7.5～8.5;
(4) feed steam in reactor, adjust the temperature to 150～300 ℃, pressure to 0.5～5.0MPa stirs and makes its thermally equivalent, reaction 15～60min;
(5) after reaction finishes, product oven dry or dewater to the weight in wet base percentage be 50%～65%;
Two, aerobic fermentation:
Add microbiobacterial agent in oven dry that step (5) makes or dewatered product, dosage is 0.5%～1% of the oven dry that makes of step (5) or dewatered product weight; Mix back system heap, after 2～3 days, heap temperature rise to 60～70 ℃, temperature tends towards stability afterwards, remains on 55～65 ℃, keeps 5～7 days, when temperature surpasses 65 ℃, carries out turning, no longer changes until temperature and namely finishes fermentation, obtains finished product.
Described organic waste is that the higher slag gunk of weight in wet base percentage is municipal sludge, animal excrement, crop residues, foodstuff production waste, Alcohol Production waste, drink production waste, wood working production waste and/or domestic refuse.
Described biomass are the lignocellulose-containing class material in workers and peasants' production of forestry process, and the lignocellulose-containing class material in workers and peasants' production of forestry process is the dregs of a decoction, rice bran, stalk, leaf, marc and/or vegetables slag.
Described microbiobacterial agent is the mixed bacterium of genus bacillus and filamentous fungus, yeast and/or mould; Wherein the dosage of genus bacillus accounts for 70% of mixed bacterium total amount.
Each index is as follows before and after the fermentation:
Beneficial effect of the present invention is:
(1) nontoxic, non-secondary pollution
Organic waste carries out subcritical thermal hydrolysis under high-temperature and high-pressure conditions after, pathogenic microorganisms such as pathogenic bacteria wherein, parasitic ovum are all killed, stink is eliminated, virulent organism is hydrolyzed to harmless micromolecular material under the katalysis of subcritical water, heavy metal is passivated simultaneously, but make the product recycling of aerobic fermentation, the secondary environmental pollution problem that no burning, compost, landfill produce.
(2) the aerobic compost time is short
Technology expands the condensate evaporation in the fibrocyte with pressure discharge at last, break Mierocrystalline cellulose crystalline texture, this plays good broken wall effect to difficult decomposing organic matter, make product structure fluffy, organism and nutritive substance flow out, under the katalysis of subcritical water, be hydrolyzed to small-molecule substance, efficiently solve the problem of hydrolysis of organic matter speed limit in the follow-up recycling.To carry out aerobic fermentation again through pretreated organic waste, after the microbe inoculation microbial inoculum, purify the living environment of microorganism, accelerate the reproduction speed of microorganism.Compare with the traditional zymotic time and can shorten fermentation period, be reduced to about 7 days by traditional about 30 days, well solved long, problem such as floor space is big of traditional aerobic fermentation cycle.
(3) free from extraneous odour
High-temperature and high-pressure conditions in the subcritical water treating processes has killed the bacterium in the organic waste, makes the organic waste stink disappear, the stench of avoiding organic waste to stack.The microorganism of inserting in the aerobic fermentation process simultaneously is dominant microflora, makes the stink of fermenting process also reduce greatly, has avoided the unmanageable drawback of foul smell in traditional aerobic fermentation.
(4) heavy metal harm reduces
Carry out the conditioning of performance owing to added part biological matter in the organic waste, make that original heavy metal is diluted to a certain extent in the organic waste, heavy metal is passivated in organic waste pre-treatment and resource utilization process simultaneously, makes its harm reduce greatly.
(5) construction operation meets environmental protection standard, zero release
The specific inductivity of subcritical water, homogeneous system and katalysis make can be degraded to innoxious small-molecule substance such as harmful materials such as phenol, polychlorinated biphenyls, avoid environment is produced pollution.In addition, aerobic fermentation has been realized the recycling of resource, also meets the call of national development recycling economy.
(6) fertilizer efficiency is good
The ecological organic fertilizer of the present invention's preparation, organic content is up to 55%～85%, far above 45% of organic fertilizer standard code, and humic acids content is up to 20%～40%, can strengthen the soil granular structure, make soil become softer, increase water flowing and air permeability, be fit to root mass and grow and the promotion plant growth.
Embodiment
Embodiment 1
In the subcritical water reactor, drop into 1 ton of municipal sludge (the weight in wet base percentage is 85%), dregs of a decoction 500kg(weight in wet base percentage is 10%), add NaOH then and regulate pH to 8, in reactor, feed steam, adjust the temperature to 200 ℃, pressure is opened the stirrer stirring and is made its thermally equivalent, reaction 30min to 1.5MPa.The reaction finish after, mud further dry to the weight in wet base percentage be 55%.
Add genus bacillus 10.5 kg, filamentous fungus 2.5kg, mould 2.0kg, mix system heap, after 3 days, heap temperature rise to 60 ℃ remains on 55～70 ℃, keeps 7 days; When temperature surpasses 65 ℃, carry out turning, no longer change until temperature, obtain finished product.
Embodiment 2
In the subcritical water reactor, drop into 1 ton in vinasse (the weight in wet base percentage is 62%), rice bran 600kg(weight in wet base percentage is 8%), add NaOH then and regulate pH to 7.5, in reactor, feed steam, adjust the temperature to 230 ℃, pressure is opened the stirrer stirring and is made its thermally equivalent, reaction 45min to 2.7MPa.The reaction finish after, organic waste further dry to the weight in wet base percentage be 50%.
Add genus bacillus 12.6 kg, filamentous fungus 2.7kg, yeast 2.7kg, mix system heap, after 2 days, heap temperature rise to 70 ℃ remains on 55～70 ℃, keeps 5 days, when temperature surpasses 65 ℃, carries out turning, no longer changes until temperature, obtains finished product.
Embodiment 3
In the subcritical water reactor, drop into 1 ton of animal excrement (the weight in wet base percentage is 22%), stalk 200kg(weight in wet base percentage is 8%), add NaOH then and regulate pH to 8.5, in reactor, feed steam, adjust the temperature to 260 ℃, pressure is opened the stirrer stirring and is made its thermally equivalent, reaction 40min to 4.9MPa.The reaction finish after, mud further dry to water ratio be 55%.
Add genus bacillus 10.5 kg, filamentous fungus 2.5kg and mould 2.5kg, mix system heap, after 3 days, heap temperature rise to 70 ℃ remains on 55～70 ℃, keeps 6 days, when temperature surpasses 65 ℃, carries out turning, no longer changes until temperature, obtains finished product.
Embodiment among the present invention only is used for that the present invention will be described, does not constitute the restriction to the claim scope, and other substituting of being equal in fact that those skilled in that art can expect are all in protection domain of the present invention.
Claims (5)
1. organic waste is made the method for ecological organic fertilier, it is characterized in that carrying out according to the following steps:
(1) subcritical water is handled:
(1) organic waste is put in the subcritical water reactor, organic waste weight in wet base percentage is in 95%;
(2) add the biomass of occupying machine waste weight 0～100%;
(3) in reactor, add NaOH, regulate pH to 7.5～8.5;
(4) in reactor, feed steam, adjust the temperature to 150～300 ℃, pressure to 0.5～5.0MPa, reaction 15～60min;
(5) after reaction finishes, product oven dry or dewater to the weight in wet base percentage be 50%～65%;
(2) aerobic fermentation:
Add microbiobacterial agent in oven dry that step (5) makes or dewatered product, dosage is 0.5%～1% of the oven dry that makes of step (5) or dewatered product weight; Mix back system heap, after 2～3 days, heap temperature rise to 60～70 ℃, temperature tends towards stability afterwards, remains on 55～65 ℃, keeps 5～7 days; When temperature surpasses 65 ℃, carry out turning, no longer change until temperature and namely finishing fermentation and obtain finished product.
2. organic waste according to claim 1 is made the ecological organic fertilier method, it is characterized in that: described organic waste is that the higher slag gunk of weight in wet base percentage is municipal sludge, animal excrement, crop residues, foodstuff production waste, Alcohol Production waste, drink production waste, wood working production waste and/or domestic refuse.
3. organic waste according to claim 1 is made the ecological organic fertilier method, it is characterized in that: described biomass are the lignocellulose-containing class material in workers and peasants' production of forestry process.
4. organic waste according to claim 3 is made the ecological organic fertilier method, and it is characterized in that: the lignocellulose-containing class material in workers and peasants' production of forestry process is the dregs of a decoction, rice bran, stalk, leaf, marc and/or vegetables slag.
5. organic waste according to claim 1 is made the ecological organic fertilier method, and it is characterized in that: described microbiobacterial agent is the mixed bacterium of genus bacillus and filamentous fungus, yeast and/or mould; Wherein the dosage of genus bacillus accounts for 70% of mixed bacterium gross weight.
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103755400A (en) * | 2014-01-10 | 2014-04-30 | 傅剑锋 | Method for preparing mineral organic fertilizer by using surplus sludge in municipal sewage plants |
| CN104355512A (en) * | 2014-10-29 | 2015-02-18 | 同济大学 | Subcritical hydrothermal treatment-based efficient recycling treatment process for sludge |
| CN104909856A (en) * | 2015-07-20 | 2015-09-16 | 西双版纳施丰绿肥料有限公司 | Method for producing organic fertilizer by pure fruit residues |
| CN106220433A (en) * | 2016-07-29 | 2016-12-14 | 上海环垦生态科技股份有限公司 | A kind of high activity little molecule richness carbon is fertile and preparation method thereof |
| CN107056343A (en) * | 2017-04-27 | 2017-08-18 | 运嘉（江苏）环保科技有限公司 | Subcritical water circular treatment feces of livestock and poultry, dead livestock and poultry, slaughterhouse leftover pieces technique |
| CN107118057A (en) * | 2017-05-31 | 2017-09-01 | 重庆文理学院 | A kind of special fertilizer for Chinese goosebeery and preparation method thereof |
| WO2017179351A1 (en) * | 2016-04-11 | 2017-10-19 | 花王株式会社 | Method for soil improvement |
| CN108033818A (en) * | 2017-12-13 | 2018-05-15 | 北京环清环境科技有限公司 | A kind of organic fertilizer production method |
| CN108314482A (en) * | 2018-03-22 | 2018-07-24 | 中国科学院青岛生物能源与过程研究所 | A kind of promotion organic matter degradation accelerates compost maturity method and its device |
| CN108712862A (en) * | 2016-04-11 | 2018-10-26 | 花王株式会社 | The breeding method of plant |
| CN109081709A (en) * | 2018-07-08 | 2018-12-25 | 杨建华 | City house refuse treatment method |
| CN109486864A (en) * | 2018-11-14 | 2019-03-19 | 江南大学 | A kind of solid-state alkali treatment method improving organic waste anaerobic fermentation efficiency |
| CN110937949A (en) * | 2019-12-31 | 2020-03-31 | 昆山尚威环保生物科技有限公司 | Organic fertilizer produced by subcritical water technology and preparation method thereof |
| CN110937958A (en) * | 2019-12-31 | 2020-03-31 | 昆山尚威环保生物科技有限公司 | Preparation process of subcritical water hydrolysis organic fertilizer |
| CN112299898A (en) * | 2020-10-21 | 2021-02-02 | 昆山尚威环保生物科技有限公司 | Method for preparing organic fertilizer based on animal and plant waste |
| WO2021064633A1 (en) * | 2019-10-04 | 2021-04-08 | Erick Schmidt | Method for producing plant nutrients from plant and animal material |
| CN114105686A (en) * | 2021-11-15 | 2022-03-01 | 渭南市变宝餐厨垃圾环保科技有限公司 | System and method for producing humic acid organic fertilizer by kitchen waste |
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Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103755400A (en) * | 2014-01-10 | 2014-04-30 | 傅剑锋 | Method for preparing mineral organic fertilizer by using surplus sludge in municipal sewage plants |
| CN103755400B (en) * | 2014-01-10 | 2016-05-18 | 安徽乐农环保科技有限公司 | A kind of method of utilizing municipal sewage plant excess sludge to prepare mineral fertilizer |
| CN104355512A (en) * | 2014-10-29 | 2015-02-18 | 同济大学 | Subcritical hydrothermal treatment-based efficient recycling treatment process for sludge |
| CN104909856A (en) * | 2015-07-20 | 2015-09-16 | 西双版纳施丰绿肥料有限公司 | Method for producing organic fertilizer by pure fruit residues |
| CN104909856B (en) * | 2015-07-20 | 2018-01-16 | 西双版纳施丰绿肥料有限公司 | The method of pure pomace production organic fertilizer |
| US11134679B2 (en) | 2016-04-11 | 2021-10-05 | Kao Corporation | Method for growing plant |
| WO2017179351A1 (en) * | 2016-04-11 | 2017-10-19 | 花王株式会社 | Method for soil improvement |
| JP2017190448A (en) * | 2016-04-11 | 2017-10-19 | 花王株式会社 | Soil improvement agent |
| US11279877B2 (en) | 2016-04-11 | 2022-03-22 | Kao Corporation | Method for improving soil |
| CN108712862B (en) * | 2016-04-11 | 2021-12-07 | 花王株式会社 | Method for cultivating plants |
| CN108712862A (en) * | 2016-04-11 | 2018-10-26 | 花王株式会社 | The breeding method of plant |
| CN106220433A (en) * | 2016-07-29 | 2016-12-14 | 上海环垦生态科技股份有限公司 | A kind of high activity little molecule richness carbon is fertile and preparation method thereof |
| CN107056343A (en) * | 2017-04-27 | 2017-08-18 | 运嘉（江苏）环保科技有限公司 | Subcritical water circular treatment feces of livestock and poultry, dead livestock and poultry, slaughterhouse leftover pieces technique |
| CN107118057A (en) * | 2017-05-31 | 2017-09-01 | 重庆文理学院 | A kind of special fertilizer for Chinese goosebeery and preparation method thereof |
| CN108033818A (en) * | 2017-12-13 | 2018-05-15 | 北京环清环境科技有限公司 | A kind of organic fertilizer production method |
| CN108314482A (en) * | 2018-03-22 | 2018-07-24 | 中国科学院青岛生物能源与过程研究所 | A kind of promotion organic matter degradation accelerates compost maturity method and its device |
| CN109081709B (en) * | 2018-07-08 | 2021-05-14 | 张晓敏 | Urban domestic garbage treatment method |
| CN109081709A (en) * | 2018-07-08 | 2018-12-25 | 杨建华 | City house refuse treatment method |
| CN109486864A (en) * | 2018-11-14 | 2019-03-19 | 江南大学 | A kind of solid-state alkali treatment method improving organic waste anaerobic fermentation efficiency |
| WO2021064633A1 (en) * | 2019-10-04 | 2021-04-08 | Erick Schmidt | Method for producing plant nutrients from plant and animal material |
| CN110937949A (en) * | 2019-12-31 | 2020-03-31 | 昆山尚威环保生物科技有限公司 | Organic fertilizer produced by subcritical water technology and preparation method thereof |
| CN110937958A (en) * | 2019-12-31 | 2020-03-31 | 昆山尚威环保生物科技有限公司 | Preparation process of subcritical water hydrolysis organic fertilizer |
| CN112299898A (en) * | 2020-10-21 | 2021-02-02 | 昆山尚威环保生物科技有限公司 | Method for preparing organic fertilizer based on animal and plant waste |
| CN114105686A (en) * | 2021-11-15 | 2022-03-01 | 渭南市变宝餐厨垃圾环保科技有限公司 | System and method for producing humic acid organic fertilizer by kitchen waste |
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Application publication date: 20130703 |