CN106734118B - Treatment method of household garbage odor - Google Patents

Treatment method of household garbage odor Download PDF

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Publication number
CN106734118B
CN106734118B CN201710086412.5A CN201710086412A CN106734118B CN 106734118 B CN106734118 B CN 106734118B CN 201710086412 A CN201710086412 A CN 201710086412A CN 106734118 B CN106734118 B CN 106734118B
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garbage
treatment
odor
enzyme
anaerobic fermentation
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CN106734118A (en
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刘波
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刘波
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE
    • B09B3/00Destroying solid waste or transforming solid waste or contaminated solids into something useful or harmless
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE
    • B09B3/00Destroying solid waste or transforming solid waste or contaminated solids into something useful or harmless
    • B09B3/0083Destroying solid waste or transforming solid waste or contaminated solids into something useful or harmless by means of a thermal treatment, e.g. evaporation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE
    • B09B5/00Operations not covered by single other subclass or by a single other group in this subclass
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05FORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F9/00Fertilisers from household or town refuse
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/20Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/40Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse

Abstract

The invention discloses a method for treating odor of household garbage, and belongs to the technical field of household garbage treatment. The processing method comprises the following steps: a. starting a garbage grab bucket machine to grab and slowly loosen the garbage so that the garbage is loosened and falls down, and uniformly spraying enzyme bacterium liquid to the garbage while the garbage falls down; b. covering a plastic film on the garbage pile for anaerobic fermentation treatment; c. b, opening the plastic film to repeat the steps a and b until the odor of the garbage is eliminated; d. screening the garbage with the odor eliminated; e. the inorganic garbage is recycled; and carrying out heavy metal removal treatment or reduction treatment after carrying out heavy metal detection on the garbage which cannot be recycled. The treatment method of the invention can efficiently, stably and quickly treat the malodorous gas in the domestic waste treatment plant, and has good treatment effect and low investment and operation cost.

Description

Treatment method of household garbage odor
Technical Field
The invention relates to the technical field of household garbage treatment, in particular to a method for treating odor of household garbage.
Background
In the processes of comprehensive separation, composting and landfill treatment of municipal solid waste, malodorous gases with the main components of hydrogen sulfide, thiols, ammonia and volatile organic compounds are generated. The threshold concentration of malodorous gas generated by urban domestic garbage plants is low, so that the malodorous gas has strong corrosivity to equipment and pipelines, and can also cause interference to normal industrial production and daily life of surrounding residents, thereby causing serious harm to human health and ecological environment.
The conventional treatment technology for malodorous gas in municipal solid waste treatment plants mainly comprises absorption, adsorption, catalysis, incineration, plasma technology and the like. In recent years, biological treatment technology, especially biological filtration technology, has been gradually applied to the treatment of sulfur-containing malodorous gases due to the advantages of simple equipment, high treatment efficiency, low investment and operation cost, no secondary pollution and the like. At present, when the conventional biological treatment system is used for treating sulfur-containing malodorous gas of municipal solid waste, the defects of low treatment efficiency, difficult realization of standard discharge, unstable system operation, high treatment cost and the like exist.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the method for treating the odor of the household garbage, the method can be used for efficiently, stably and quickly treating the malodorous gas in the household garbage treatment plant, the treatment effect is good, and the investment and operation cost is low.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a treatment method of household garbage odor comprises the following steps:
a. starting a garbage grab bucket machine to grab and slowly loosen the garbage stacked in the garbage plant, so that the garbage is loosened and falls into a garbage collection pit; when the garbage falls down, uniformly spraying enzyme bacterial liquid to the garbage by adopting a spraying device so as to enable the enzyme bacterial liquid to fully contact with the garbage for composting reaction;
b. covering a plastic film on the garbage pile sprayed with the enzyme bacterial liquid to perform anaerobic fermentation treatment on the biological enzyme in the enzyme bacterial liquid and the garbage;
c. after the anaerobic fermentation treatment is finished, opening the plastic film, and repeating the steps a and b until the odor of the garbage is eliminated;
d. c, screening the garbage with the odor eliminated in the step c according to inorganic garbage and organic fertilizer;
e. the inorganic garbage is recycled; heavy metal detection is carried out on garbage which cannot be recycled, heavy metal removal treatment is carried out on garbage which is unqualified in detection, and the garbage which is qualified in detection is subjected to reduction treatment and then is used as a concrete raw material or an organic fertilizer for planting forest trees.
In a preferred embodiment of the present invention, the temperature in the garbage collection pit in the step a is 10 to 30 ℃ and the humidity is 40 to 80%.
In a preferred embodiment of the present invention, the reaction time of the anaerobic fermentation treatment in the step b is 5 to 10 hours.
Preferably, the reaction time of the anaerobic fermentation treatment in the step b is 6 h.
In a preferred embodiment of the present invention, the temperature of the garbage collection pit is increased to 40 to 60 ℃ after the anaerobic fermentation treatment in the step b is performed for 1 to 3 hours.
In a preferred embodiment of the invention, the enzyme bacterium solution is prepared by mixing lactic acid bacteria, yeast bacteria, bacillus subtilis and bacillus licheniformis in a communicating tank and then performing parallel fermentation.
Preferably, the enzyme bacterium liquid is prepared according to the following weight ratio of 1: 100, diluting with water according to the following ratio: the garbage is uniformly sprayed on the garbage in a ratio of 1: 1.
Preferably, the step b further comprises spraying the enzyme bacterium solution onto the plastic film by using a spraying device to eliminate the escaping odor.
Preferably, the waste penetrating fluid generated in the anaerobic fermentation treatment in the step b is transported to a waste penetrating fluid treatment tank for treatment through a pipeline.
Compared with the prior art, the invention has the beneficial effects that:
the method for treating the odor of the household garbage utilizes the enzyme bacterium liquid to carry out biocatalytic treatment on the garbage at normal temperature so as to eliminate the odor of the garbage, has simple step operation, and compared with the treatment method in the prior art, in a factory building with the same area, the treatment period of the odor of the garbage is shortened from 72h to 5-10 h, thereby greatly shortening the treatment period of the garbage, improving the garbage treatment capacity of a household garbage treatment plant by 12 times and greatly reducing the treatment cost. The invention can efficiently, stably and quickly treat the malodorous gas in the domestic waste treatment plant, and has good treatment effect and low investment and operation cost.
Drawings
FIG. 1 is a process flow chart of the method for treating odor of household garbage according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the method for treating odor of household garbage according to the present invention comprises the following steps:
a. starting a garbage grab bucket machine to grab and slowly loosen the garbage stacked in the garbage plant, so that the garbage is loosened and falls into a garbage collection pit; when the garbage falls down, uniformly spraying enzyme bacterial liquid to the garbage by adopting a spraying device so as to enable the enzyme bacterial liquid to fully contact with the garbage for composting reaction;
b. covering a plastic film on the garbage pile sprayed with the enzyme bacterial liquid to perform anaerobic fermentation treatment on the biological enzyme in the enzyme bacterial liquid and the garbage;
c. after the anaerobic fermentation treatment is finished, opening the plastic film, and repeating the steps a and b until the odor of the garbage is eliminated;
d. c, screening the garbage with the odor eliminated in the step c according to inorganic garbage and organic fertilizer;
e. the inorganic garbage is recycled; heavy metal detection is carried out on garbage which cannot be recycled, heavy metal removal treatment is carried out on garbage which is unqualified in detection, and the garbage which is qualified in detection is subjected to reduction treatment and then is used as a concrete raw material or an organic fertilizer for planting forest trees.
Preferably, the temperature in the garbage collection pit in the step a is 10-30 ℃, the humidity is 40-80%, and under the condition, the catalytic activity of the biological enzyme is highest.
And the reaction time of the anaerobic fermentation treatment in the step b is 5-10 h. Preferably, the reaction time of the anaerobic fermentation treatment in step b is 6 h.
And c, after the anaerobic fermentation treatment in the step b is carried out for 1-3 hours, the temperature of the garbage collection pit is increased to 40-60 ℃.
The enzyme bacterial liquid is prepared by mixing lactic acid bacteria, yeast, bacillus subtilis and bacillus licheniformis in a communicating tank and then carrying out parallel fermentation. The viable bacteria quantity of the enzyme bacterial liquid can reach 23 hundred million/ml, the strain activity of the bacterial liquid is good, and the bacterial liquid can be activated after being diluted by adding water, so that organic molecules in garbage can be decomposed, and the garbage can enter a retting fermentation state. Preferably, the ratio of the enzyme solution is 1: 100, diluting with water according to the following ratio: the garbage is uniformly sprayed on the garbage in a ratio of 1: 1.
And step b, spraying the enzyme bacterium liquid to the upper part of the plastic film by using a spraying device so as to eliminate the escaping odor. When the biological enzyme molecules are sprayed above the plastic film by the spraying device, the biological enzyme molecules are fully contacted with the escaped odor molecules, so that the odor molecules are decomposed into carbon dioxide and water, thereby eliminating odor and effectively preventing the garbage odor from escaping to influence the life of surrounding residents.
And (c) conveying the garbage penetrating fluid generated by anaerobic fermentation treatment in the step (b) to a garbage penetrating fluid treatment tank through a pipeline for treatment, so as to ensure that secondary environmental pollution and odor disturbing residents cannot be generated.
Example (b):
the odor treatment of the household garbage of a certain garbage treatment plant comprises the following steps:
a. the garbage truck with the capacity of 133 garbage trucks and 15 tons per day pours 2000 tons of domestic garbage into the garbage pit in the garbage unloading hall, the garbage is grabbed by the garbage grab bucket machine with the capacity of 5 tons and moved to the upper part of the garbage collection pit, then the grab bucket is slowly loosened to loose and drop the garbage, and the spraying device at the corner of the garbage collection pit sprays enzyme bacterium liquid to the grab bucket and the dropped garbage so that the enzyme bacterium liquid and the garbage are fully contacted for composting reaction under the conditions that the temperature is 10-30 ℃ and the humidity is 40-80%. 2000 tons of garbage are received in the garbage discharging room every day, a plurality of cranes and grab buckets are required to be installed, and a biological enzyme spraying system is matched. Wherein the enzyme solution is prepared by mixing lactic acid bacteria, yeast bacteria, bacillus subtilis and bacillus licheniformis in a communicating tank and then carrying out parallel fermentation. The enzyme bacterial liquid is prepared according to the following steps of 1: 100, diluting with water according to the following ratio: the garbage is uniformly sprayed on the garbage in a ratio of 1: 1. 2000kg of diluted enzyme bacterial liquid is needed for 2000 tons of garbage every day. In the aerobic retting process, the moisture in the garbage is continuously evaporated, and the whole storage amount of the garbage is reduced.
b. After the aerobic retting process of the garbage is completed, covering a plastic film on the garbage pile sprayed with the enzyme bacterium liquid, and performing anaerobic fermentation treatment on the garbage; after reacting for 2 hours, the temperature of the garbage disposal plant is raised to 40 ℃; after 6 hours of reaction, the garbage in the plastic film is catalyzed by biological enzyme, the odor molecules of the garbage are decomposed into carbon dioxide and water molecules, and most of the odor of the garbage is eliminated.
c. And (4) after the anaerobic fermentation treatment is finished, opening the plastic film, and repeating the steps a and b within 5 days until the odor of the garbage is eliminated.
d. And c, screening the garbage with the odor eliminated in the step c according to inorganic garbage and organic fertilizer.
e. The inorganic garbage is recycled; heavy metal detection is carried out to rubbish that can't recycle, gets rid of heavy metal to the rubbish that detects unqualified and handles, sends to rubbish mummification room to detect qualified rubbish and carries out the decrement processing and then be used as concrete raw materials or be used for the fertilizer of planting forest.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims (6)

1. A method for treating odor of household garbage is characterized by comprising the following steps: the method comprises the following steps:
a. starting a garbage grab bucket machine to grab and slowly loosen the garbage stacked in the garbage plant, so that the garbage is loosened and falls into a garbage collection pit; when the garbage falls down, uniformly spraying enzyme bacterial liquid to the garbage by adopting a spraying device so as to enable the enzyme bacterial liquid to fully contact with the garbage for composting reaction; wherein the temperature in the garbage collection pit is 10-30 ℃ and the humidity is 40-80%; the enzyme bacterial liquid is prepared by mixing lactic acid bacteria, yeast, bacillus subtilis and bacillus licheniformis in a communicating tank and then performing parallel fermentation;
b. covering a plastic film on the garbage pile sprayed with the enzyme bacterial liquid to perform anaerobic fermentation treatment on the biological enzyme in the enzyme bacterial liquid and the garbage; after the anaerobic fermentation treatment is carried out for 1-3 hours, the temperature of the garbage collection pit is raised to 40-60 ℃;
c. after the anaerobic fermentation treatment is finished, opening the plastic film, and repeating the steps a and b until the odor of the garbage is eliminated;
d. c, screening the garbage with the odor eliminated in the step c according to inorganic garbage and organic fertilizer;
e. the inorganic garbage is recycled and treated, and the organic fertilizer is subjected to harmless treatment.
2. The method for treating odor of household garbage according to claim 1, wherein: and the reaction time of the anaerobic fermentation treatment in the step b is 5-10 h.
3. The method for treating odor of household garbage according to claim 2, wherein: the reaction time of the anaerobic fermentation treatment in the step b is 6 hours.
4. The method for treating odor of household garbage according to claim 1, wherein: the enzyme bacterial liquid is prepared by the following steps of 1: 100, diluting with water according to the following ratio: the garbage is uniformly sprayed on the garbage in a ratio of 1: 1.
5. The method for treating odor of household garbage according to claim 1, wherein: and the step b also comprises the step of spraying enzyme bacterium liquid to the upper part of the plastic film by using a spraying device so as to eliminate the escaping odor.
6. The method for treating odor of household garbage according to claim 1, wherein: and c, conveying the garbage penetrating fluid generated by anaerobic fermentation treatment in the step b to a garbage penetrating fluid treatment tank through a pipeline for treatment.
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CN107597786B (en) * 2017-11-02 2020-05-12 成都三洲康洁生物科技有限责任公司 Method for landfill treatment of household garbage
CN109158403A (en) * 2018-08-07 2019-01-08 刘树云 House refuse biology high temperature drying method for treating
CN111167834A (en) * 2020-01-10 2020-05-19 吕爱军 System and method for heating garbage entering factory in garbage power plant

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