CN202643585U - Solid anaerobic and aerobic composting system for organic refuse and sludge - Google Patents

Solid anaerobic and aerobic composting system for organic refuse and sludge Download PDF

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Publication number
CN202643585U
CN202643585U CN2012203527338U CN201220352733U CN202643585U CN 202643585 U CN202643585 U CN 202643585U CN 2012203527338 U CN2012203527338 U CN 2012203527338U CN 201220352733 U CN201220352733 U CN 201220352733U CN 202643585 U CN202643585 U CN 202643585U
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Prior art keywords
solid
aerobic
aerobic composting
anaerobic digestion
biogas
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Expired - Fee Related
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CN2012203527338U
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Chinese (zh)
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李华
胡登燕
郑传勇
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Sichuan Stong Omex Environmental Engineering Co Ltd
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Sichuan Stong Omex Environmental Engineering Co Ltd
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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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
    • 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 utility model discloses a solid anaerobic and aerobic composting system for organic refuse and sludge; the solid anaerobic and aerobic composting system comprises a high solid anaerobic digester, an aerobic composting device and a dryer, which are arranged in sequence, wherein the high solid anaerobic digester is mounted with a biogas purifying device; the aerobic composting device is mounted with an air blower; the biogas purifying device is connected with a biogas combustion device; and the biogas combustion device is simultaneously communicated with the high solid anaerobic digester, the aerobic composting device and the dryer. According to the utility model, resource comprehensive utilization is achieved, and the municipal organic refuse and the sludge of sewage treatment plants are converted into clean energy methane for generating power and heat energy. According to the utility model, the solid refuse is converted into humus for being used as fertilizers and power plant fuels; and moreover, bacteria in the solid refuse are inactivated at proper temperature and time in the reaction process, so that reduction and harmless treatment of the solid refuse are achieved.

Description

Solid anaerobism and the aerobic composting system of organic waste and mud
Technical field
The utility model relates to the Solid waste disposal technical field, specifically solid anaerobism and the aerobic composting system of organic waste and mud.
Background technology
At present, Municipal Solid Waste and sewage quantity constantly increase, the organic garbage of city that thereupon produces and sludge of sewage treatment plant are more and more, from solid waste, reclaim resource and the energy, reduce the refuse amount of ultimate disposal, thereby alleviate the load of its environmental pollution, become the common problems of concern of world today institute.The purpose of Solid waste disposal mainly contains following four aspects: minimizing: reduce the front volume of solid waste ultimate disposal, to reduce the expense of solid waste disposal and ultimate disposal; Stabilization: make waste stabilization by processing, avoid producing secondary pollution; Innoxious: as to reach the innoxious and sanitisation of solid waste, such as removal heavy metal, sterilization etc.; Resource utilization: when processing solid waste, reach turn bane into boon, the purpose of comprehensive utilization, protection of the environment, as producing biogas etc.
The method of Solid waste disposal has sea disposal, disposal by land, refuse landfill disposal, burning, biological treatment etc.Its relative merits are respectively: 1, sea disposal: in recent years, along with the raising that people realize intensification and the total environment of protection of the environment ecological importance understanding, sea disposal has been subject to increasing restriction; 2, disposal by land: disposal by land comprises that soil cultivating, engineering storehouse or retention basin storage, landfill and deep well injection are several, but very serious to the pollution in soil; 3, refuse landfill is disposed: select suitable place to do and after antiseepage is processed rubbish is carried out landfill, and less to ambient contamination, but can produce very unmanageable high-concentration garbage percolate; 4, incineration disposal: solid waste is heat-treated, utilize heating that organism is converted into inorganics, reduce simultaneously volume, but have the waste gas problem that produces; 5, solid waste is biological disposes: the labile organic compound in the solid waste is as object, aerobic and anaerobic effect by biology, be converted into a kind for the treatment of process of stable product, the energy and other useful matteies, have simultaneously the purpose of Solid waste disposal minimizing, stabilization, innoxious, resource utilization, realized comprehensive utilization of resources.In sum, high solid anaerobism and the aerobic compost method of disposal of anxious a kind of organic garbage of city to be studied and mud.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provide have simultaneously the Solid waste disposal minimizing, the method for stabilization, innoxious, resource utilization, i.e. the solid anaerobism of organic waste and mud and aerobic composting system and method for disposal.
The purpose of this utility model is achieved through the following technical solutions: solid anaerobism and the aerobic composting system of organic waste and mud comprise the high solid anaerobic digestion device, aerobic compost device, the moisture eliminator that set gradually; The high solid anaerobic digestion device is equipped with methane purifying device, and the aerobic compost device is installed gas blower, and methane purifying device is connected with biogas combustion device, and described biogas combustion device is communicated with high solid anaerobic digestion device, aerobic compost device, moisture eliminator simultaneously.
Described methane purifying device also is connected with biogas electricity generation apparatus.
Described aerobic compost device also is connected with the fertiliser production device.
Described moisture eliminator also is connected with the tailing collection device.
Also comprise mixing tank, in the described mixing tank agitator is installed.
Based on the solid anaerobism of above-mentioned organic waste and mud and the method for disposal of aerobic composting system, method of disposal comprises combination treatment step, Anaerobic Digestion step and the aerobic compost treatment step of carrying out successively;
Wherein, the combination treatment step is: mud and organic garbage of city are placed in the mixing tank fully stir;
The Anaerobic Digestion step is: mixed solid waste is carried out Anaerobic Digestion by the high solid anaerobic digestion device, between the final so that solids content in the solid waste reaches 20%～35% till;
The aerobic compost treatment step is: the material after the anaerobic digestion is carried out aerobic treatment by the aerobic compost device.
When solid waste passed through the high solid anaerobic digestion device, the temperature in the control high solid anaerobic digestion device was between 54 ℃～56 ℃, and control pH value scope is between 7.0～7.2; So that the organic composition in the solid waste carries out anaerobic digestion, produce methane and carbon dioxide, final so that in the solid waste solids content reach between 25%～30%, the nutritive substance optimum carbon nitrogen ratio reaches between 25～30, last stopped reaction.
When solid waste passes through the aerobic compost device, control the temperature of aerobic Composter for being fit to the temperature of microorganism Fast-propagation, final so that till solids content reaches more than 65% in the solid waste.
Also comprise drying step and tailing collection step;
Drying step: after aerobic compost device reaction finished, the soil ulmin of generation carries out high temperature drying through moisture eliminator to be processed;
Tailing is collected step: dried soil ulmin is collected through the tailing collection device finished processing.
The solid anaerobism of the organic waste that designs in the utility model and mud and aerobic composting system utilize the biogas that self produces, then burning by biogas combustion device produces heat and keeps high solid anaerobic digestion device, aerobic compost device, the needed heat of moisture eliminator, reaches the environmental protection production environmental protection utilization of gathering materials on the spot with this.Therefore, in the native system, high solid anaerobic digestion device, aerobic compost device, the needed energy of moisture eliminator are all taken from system itself, do not need extra power supply.Therefore can be when solid waste be disposed, accomplish the cyclic production of stabilization, innoxious, resource utilization.
Simultaneously for the biogas of excess enthalpy, native system adopts and is connected the biogas electricity generation apparatus processing of generating electricity with methane purifying device, can power to the external world.And the soil ulmin that the aerobic compost device produces carries out the production of organic fertilizer by the fertiliser production device, perhaps produces organic-fuel by heat treated.
During the anaerobic digestion reaction, can produce methane and carbon dioxide, for so that the aerobic reaction in later stage can have a suitable nutrient environment, in the anaerobic digestion reaction, so that solids content gets final product when being reached for 20%～35%, the preferential selection makes solids content be reached for 25%～30%, and the high solid anaerobic digestion actuator temperature is controlled at 54～56 ℃, best PH scope is 7.0～7.2, nutritive substance optimum carbon nitrogen ratio 25～30.Find through research, the nutritive substance optimum carbon nitrogen ratio be 25～30 and solids content be reached under 25%～30% this environment, the aerobic reaction in later stage could carry out fast fully reaction under this environment.Therefore can shorten the time of aerobic reaction, improve the processing speed to organic waste.
For convenient processing to the later stage soil ulmin, in the aerobic compost of anaerobically digested sludge, final so that in the solid waste solids content reach and just stop anaerobic reaction more than 65%, aerobic compost device product out is soil ulmin, as fertilizer sources uses, can be as Power Plant Fuel after the process moisture eliminator drying, calorific value 14000～15000KJ/Kg, density is about 560Kg/m 3When solids content reaches 65%, can utilize fully the heat of system generation itself to its heat drying, and need to not process by outside resources.That is, if when solids content only reached 50%, we just stopped anaerobic reaction, the soil ulmin in the aerobic compost device is taken out, its water ratio is fabulous so, for the heat that the methane content of producing early stage produces, be not enough to it withering.Therefore in this case, need to carry out heat treated by the heat in the external world, this and final purpose of the present utility model are disagreed, through many experiments, we find, when solids content reaches 65%, can utilize system's own resources to carry out heat drying fully and process.
Principle of work of the present utility model is: after organic garbage of city and sludge of sewage treatment plant mix through mixing tank, enter the high solid anaerobic digestion device under anaerobic, control processing parameter according to the above-mentioned steps the first step, the needed nutritional condition of anaerobion and envrionment conditions have been formed, utilize microorganism acid-producing bacteria and methanogen metabolism in the high solid anaerobic digestion device, decompose the organism in the refuse and produce methane and carbon dioxide.The biogas that produces purifies by methane purifying device, and a part is heat energy by the biogas combustion device burning conversion, and for high solid anaerobic digestion device, aerobic compost device and moisture eliminator provide heat energy, another part is electric energy by the biogas electricity generation apparatus burning conversion.High solid anaerobic digestion device material out enters in the aerobic compost device, gas blower provides Institute of Micro-biology aerobic gas for the aerobic compost device, material conversion is soil ulmin, wherein a part enters fertiliser production device as fertilizer sources and soil improvement agent, can be as Power Plant Fuel after another part process moisture eliminator drying.
Compared with prior art, the utlity model has following beneficial effect:
(1) the utility model is realized comprehensive utilization of resources organic garbage of city and sludge of sewage treatment plant being converted into methane as clean energy source, and utilizes methane to generate electricity and produce heat energy.Rather than other disposal options such as picture sea disposal, garbage loading embeading, do not realize recycling.
(2) the utility model is converted into soil ulmin with solid waste, and as fertilizer sources uses and Power Plant Fuel, and by temperature and time suitable in the reaction process bacterium in the solid waste has been carried out deactivation, has realized solid waste minimizing and innoxious.
Description of drawings
Fig. 1 is the utility model method of disposal process flow diagram;
The corresponding name of Reference numeral is called in the accompanying drawing: 1, mixing tank, 2, the high solid anaerobic digestion device, 3, the aerobic compost device, 4, moisture eliminator, 5, mud, 6, organic garbage of city, 7, agitator, 8, methane purifying device, 9, biogas combustion device, 10, biogas electricity generation apparatus, 11, gas blower, 12, fertiliser production device, 13, the tailing collection device.
Embodiment
The utility model is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiment of the present utility model is not limited to this.
Embodiment:
As shown in Figure 1, when the high solid anaerobism of organic garbage of city and mud and the work of aerobic compost method of disposal: after the organic waste that separates from municipal wastes and sludge of sewage treatment plant pass through mixing tank 1 and mix, enter high solid anaerobic digestion device 2 under anaerobic, solids content is 25%～30% in the control material, the high solid anaerobic digestion actuator temperature is controlled at 54～56 ℃, best PH scope is 7.0～7.2, nutritive substance optimum carbon nitrogen ratio 25～30, the needed nutritional condition of anaerobion and envrionment conditions have been formed, utilize microorganism acid-producing bacteria and methanogen metabolism in the high solid anaerobic digestion device 2, decompose the organism in the refuse and produce methane and carbon dioxide.The biogas that produces purifies by methane purifying device 8, a part is heat energy by biogas combustion device 9 burning conversions, for high solid anaerobic digestion device 8, aerobic compost device 3 and moisture eliminator 4 provide heat energy, another part is electric energy by biogas electricity generation apparatus 10 burning conversions.High solid anaerobic digestion device 2 material out enters in the aerobic compost device 3, and gas blower 11 provides Institute of Micro-biology aerobic gas for aerobic compost device 3, and material conversion is soil ulmin, calorific value 14000～15000KJ/Kg, and density is about 560Kg/m 3, wherein a part enters fertiliser production device 12 as fertilizer sources and soil improvement agent, can be as Power Plant Fuel after another part process moisture eliminator 4 dryings.
Therefore, the organic waste of the utility model design and solid anaerobism and the aerobic composting system of mud comprise the high solid anaerobic digestion device 2, aerobic compost device 3, the moisture eliminator 4 that set gradually; High solid anaerobic digestion device 2 is equipped with methane purifying device 8, aerobic compost device 3 is installed gas blower 11, methane purifying device 8 is connected with biogas combustion device 9, and described biogas combustion device 9 is communicated with high solid anaerobic digestion device 2, aerobic compost device 3, moisture eliminator 4 simultaneously.
Described methane purifying device 8 also is connected with biogas electricity generation apparatus 10.
Described aerobic compost device 3 also is connected with fertiliser production device 12.
Described moisture eliminator 4 also is connected with tailing collection device 13.
Also comprise mixing tank 1, agitator 7 is installed in the described mixing tank.
Based on the solid anaerobism of above-mentioned organic waste and mud and the method for disposal of aerobic composting system, method of disposal comprises combination treatment step, Anaerobic Digestion step and the aerobic compost treatment step of carrying out successively;
Wherein, the combination treatment step is: mud 5 and organic garbage of city 6 are placed in the mixing tank 1 fully stir;
The Anaerobic Digestion step is: mixed solid waste is carried out Anaerobic Digestion by high solid anaerobic digestion device 2, between the final so that solids content in the solid waste reaches 20%～35% till;
The aerobic compost treatment step is: the material after the anaerobic digestion is carried out aerobic treatment by aerobic compost device 3.
When solid waste passed through high solid anaerobic digestion device 2, the temperature in the control high solid anaerobic digestion device 2 was between 54 ℃～56 ℃, and control pH value scope is between 7.0～7.2; So that the organic composition in the solid waste carries out anaerobic digestion, produce methane and carbon dioxide, final so that in the solid waste solids content reach between 25%～30%, the nutritive substance optimum carbon nitrogen ratio reaches between 25～30, last stopped reaction.
When solid waste passes through aerobic compost device 3, control the temperature of aerobic Composter 3 for being fit to the temperature of microorganism Fast-propagation, final so that till solids content reaches more than 65% in the solid waste.
Also comprise drying step and tailing collection step;
Drying step: after aerobic compost device 3 reaction finished, the soil ulmin of generation carries out high temperature drying through moisture eliminator 4 to be processed;
Tailing is collected step: dried soil ulmin is collected through tailing collection device 13 finished processing.
The solid anaerobism of the organic waste that designs in the utility model and mud and aerobic composting system utilize the biogas that self produces, then burning by biogas combustion device 9 produces heat and keeps high solid anaerobic digestion device 2, aerobic compost device 3, moisture eliminator 4 needed heats, reaches the environmental protection production environmental protection utilization of gathering materials on the spot with this.Therefore, in the native system, high solid anaerobic digestion device 2, aerobic compost device 3, the moisture eliminator 4 needed energy are all taken from system itself, do not need extra power supply.Therefore can be when solid waste be disposed, accomplish the cyclic production of stabilization, innoxious, resource utilization.
Simultaneously for the biogas of excess enthalpy, native system adopts and is connected biogas electricity generation apparatus 10 processing of generating electricity with methane purifying device 8, can power to the external world.And the soil ulmin that aerobic compost device 3 produces carries out the production of organic fertilizer by fertiliser production device 12, perhaps produces organic-fuel by heat treated.
During the anaerobic digestion reaction, can produce methane and carbon dioxide, for so that the aerobic reaction in later stage can have a suitable nutrient environment, in the anaerobic digestion reaction, so that solids content gets final product when being reached for 20%～35%, the preferential selection makes solids content be reached for 25%～30%, and the high solid anaerobic digestion actuator temperature is controlled at 54～56 ℃, best PH scope is 7.0～7.2, nutritive substance optimum carbon nitrogen ratio 25～30.Find through research, the nutritive substance optimum carbon nitrogen ratio be 25～30 and solids content be reached under 25%～30% this environment, the aerobic reaction in later stage could carry out fast fully reaction under this environment.Therefore can shorten the time of aerobic reaction, improve the processing speed to organic waste.
For convenient processing to the later stage soil ulmin, in the aerobic compost of anaerobically digested sludge, final so that in the solid waste solids content reach and just stop anaerobic reaction more than 65%, aerobic compost device product out is soil ulmin, as fertilizer sources uses, can be as Power Plant Fuel after the process moisture eliminator drying, calorific value 14000～15000KJ/Kg, density is about 560Kg/m 3When solids content reaches 65%, can utilize fully the heat of system generation itself to its heat drying, and need to not process by outside resources.That is, if when solids content only reached 50%, we just stopped anaerobic reaction, the soil ulmin in the aerobic compost device is taken out, its water ratio is fabulous so, for the heat that the methane content of producing early stage produces, be not enough to it withering.Therefore in this case, need to carry out heat treated by the heat in the external world, this and final purpose of the present utility model are disagreed, through many experiments, we find, when solids content reaches 65%, can utilize system's own resources to carry out heat drying fully and process.
Principle of work of the present utility model is: after organic garbage of city and sludge of sewage treatment plant mix through mixing tank, enter the high solid anaerobic digestion device under anaerobic, control processing parameter according to the above-mentioned steps the first step, the needed nutritional condition of anaerobion and envrionment conditions have been formed, utilize microorganism acid-producing bacteria and methanogen metabolism in the high solid anaerobic digestion device, decompose the organism in the refuse and produce methane and carbon dioxide.The biogas that produces purifies by methane purifying device, and a part is heat energy by the biogas combustion device burning conversion, and for high solid anaerobic digestion device, aerobic compost device and moisture eliminator provide heat energy, another part is electric energy by the biogas electricity generation apparatus burning conversion.High solid anaerobic digestion device material out enters in the aerobic compost device, gas blower provides Institute of Micro-biology aerobic gas for the aerobic compost device, material conversion is soil ulmin, wherein a part enters fertiliser production device as fertilizer sources and soil improvement agent, can be as Power Plant Fuel after another part process moisture eliminator drying.
As mentioned above, then can well realize the utility model.

Claims (5)

1. solid anaerobism and the aerobic composting system of organic waste and mud is characterized in that: comprise the high solid anaerobic digestion device (2), aerobic compost device (3), the moisture eliminator (4) that set gradually; High solid anaerobic digestion device (2) is equipped with methane purifying device (8), aerobic compost device (3) is installed gas blower (11), methane purifying device (8) is connected with biogas combustion device (9), and described biogas combustion device (9) is communicated with high solid anaerobic digestion device (2), aerobic compost device (3), moisture eliminator (4) simultaneously.
2. solid anaerobism and the aerobic composting system of organic waste according to claim 1 and mud, it is characterized in that: described methane purifying device (8) also is connected with biogas electricity generation apparatus (10).
3. solid anaerobism and the aerobic composting system of organic waste according to claim 1 and mud, it is characterized in that: described aerobic compost device (3) also is connected with fertiliser production device (12).
4. solid anaerobism and the aerobic composting system of organic waste according to claim 1 and mud, it is characterized in that: described moisture eliminator (4) also is connected with tailing collection device (13).
5. solid anaerobism and the aerobic composting system of organic waste according to claim 1 and mud is characterized in that: also comprise mixing tank (1), agitator (7) is installed in the described mixing tank.
CN2012203527338U 2012-07-20 2012-07-20 Solid anaerobic and aerobic composting system for organic refuse and sludge Expired - Fee Related CN202643585U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102731179A (en) * 2012-07-20 2012-10-17 四川四通欧美环境工程有限公司 Solid anaerobic and aerobic composting system for organic garbage and sludge and treatment method
CN110372882A (en) * 2019-08-05 2019-10-25 四川锐源能环科技有限公司 A kind of method and apparatus of food production leftover bits and pieces waste production humic acid

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102731179A (en) * 2012-07-20 2012-10-17 四川四通欧美环境工程有限公司 Solid anaerobic and aerobic composting system for organic garbage and sludge and treatment method
CN102731179B (en) * 2012-07-20 2014-02-26 四川四通欧美环境工程有限公司 Treatment method of solid anaerobic and aerobic composting system for organic garbage and sludge
CN110372882A (en) * 2019-08-05 2019-10-25 四川锐源能环科技有限公司 A kind of method and apparatus of food production leftover bits and pieces waste production humic acid

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