CN100522888C - Method and device for increasing success rate of compost - Google Patents
Method and device for increasing success rate of compost Download PDFInfo
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- CN100522888C CN100522888C CNB2006100731708A CN200610073170A CN100522888C CN 100522888 C CN100522888 C CN 100522888C CN B2006100731708 A CNB2006100731708 A CN B2006100731708A CN 200610073170 A CN200610073170 A CN 200610073170A CN 100522888 C CN100522888 C CN 100522888C
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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
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- 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
A method for raising compost success rate, introducing hot dry air into compost pile body, reducing air quantity of introduced hot dry air successively during microbe culture period, quickly heating up period and high temperature control period. The device of the method is composed of a hot blast furnace for introducing hot dry air into compost pile body via a hot air introduced pipe, a threeway air pipe arranged between the hot air introduced pipe and the compost pile body, the first end of the threeway air pipe connected with the hot air introduced pipe, the second end is arranged in the compost pile body, the third end communicates with air; a adjusting gas valve for realizing proportion of hot dry air and air.
Description
Technical field
The present invention relates to a kind of method of compost, relate in particular to a kind of method that improves success rate of compost.
The invention still further relates to the device that is used to realize aforesaid method
Background technology
It is the great environmental problem that China faces that organic waste pollutes.According to statistics, 2002, the generation of China's feces of livestock and poultry was 27.5 hundred million tons, the amount of clearing of rubbish, ight soil nearly 200,000,000 tons (Gao Ding etc., Geographical Study, 2006,25 (2): 311～318).In addition, also produce more than 700 ten thousand every year and do ton municipal sludge and paper mill sludge.As do not have economically viable disposal means to be disposed utilization, so a large amount of organic wastes will cause serious environmental problem.
Compost is a kind of effective means of handling feces of livestock and poultry, mud, rubbish.By compost, can make that organic waste is innoxious, minimizing, resource utilization, alleviate pollution to environment.
Compost is as a kind of bio-reaction system, and its speed of response is directly related with temperature.Temperature directly affects the activity of heap body microorganism, and the rising of heap temperature mainly is to discharge heat because of the microbiological degradation organism.According to the compost temperature changing conditions, composting process can be divided into four-stage, i.e. microorganism culturing phase, the phase of being rapidly heated, high-temperature control phase, cooling dehydration phase (Gao Ding etc., Chinese water supply and drainage, 2005,21 (4): 17～19; Huang Qifei etc., Acta Ecologica Sinica, 2002,22 (5): 742-746).Fs is the microorganism culturing phase, this stage microbial activities ability a little less than, quantity of heat production is fewer, therefore relatively difficulty heats up.
Engineering practice shows that the fs of compost is the key link that can the decision compost normally carry out.At the compost initial stage, the microbial activities ability a little less than, quantity of heat production is little, this moment air flow should be not excessive.Air flow is crossed conference and is taken away a large amount of heats, causes piling the body heat dissipation capacity greater than quantity of heat production, makes the heap body be difficult to heat up.But air flow is crossed the low heap body that can make and is in anaerobic state, equally also is difficult to heat up.When ambient temperature was low, the gas that blasts was difficult to guarantee the needs of microbial activities, so just makes the failure of compost time lengthening or compost, thereby compost floor space and compost cost are improved greatly.Therefore, if do not heat measure, tend to because winter temperature is crossed low and can't be carried out normal compost fermentation in the northern area of China.But, can't regulate heat-processed automatically according to the temperature Change in winter if adopt common external heating mode, therefore have that energy consumption has high input, energy loss is serious, and Technological Economy obstacle such as required facility investment is big, thereby make external heating mode lack actual application value in the compost in the winter time.Chen Tongbins etc. have been invented a kind of compost subsystem in winter (patent of invention ZL01120518.0) of automatic control, low temperature season compost heap body is difficult to heat up or problem such as the heating energy loss is serious when solving low temperature, reduce the energy consumption of compost, can also shorten simultaneously for 3/4～7/8 compost time in winter, reduce the floor space of compost, improve the success ratio of compost and the quality of composting production.But this method need consume extra electric energy.If can utilize the waste heat in the system, then can reduce this part energy consumption, further reduce cost.
Summary of the invention
The object of the present invention is to provide a kind of method that improves the compost fermentation success ratio,, reduce the floor space of compost, improve the success ratio of compost and the quality of composting production to shorten the compost time in winter.
Another purpose of the present invention is to be provided for realizing the device of aforesaid method.
For achieving the above object, method provided by the invention is to have utilized the existing drying plant of composting plant, hot dry-air blast is introduced the compost heap body, be in microorganism culturing phase, the phase of being rapidly heated and high-temperature control respectively during the phase, reduce the air quantity of the hot dry-air blast of introducing successively at the compost heap body.
The device that is used to realize aforesaid method provided by the invention is introduced compost heap body by the hot blast induced exhaust with hot dry-air blast by hotblast stove, is provided with three vent-pipes between hot blast induced exhaust and compost heap body, installs a gas valve in the middle of this three vent-pipe; Wherein first end of this three vent-pipe links to each other with the hot blast induced exhaust, and wherein second end is located in the compost heap body, and wherein the 3rd end communicates with atmosphere; By the adjustments of gas valve to realize the ratio of hot dry-air blast and air.
Described device, wherein the hot blast induced exhaust connects an induced draft fan, by this induced draft fan hot dry-air blast is introduced in the compost heap body.
Described device, wherein gas valve is a gas solenoid valve door, is controlled by a Controlling System.
Described device, hot dry-air blast are wherein taken from the dryer afterbody through the hot blast after heating.
Described device, wherein three vent-pipes and hot blast induced exhaust connecting place are provided with temperature sensor.
Described device, wherein the total blast pipe connecting place of three vent-pipes and compost Chi is provided with temperature sensor.
As everyone knows, because composting production all needs further oven dry, so composting plant all is furnished with drying plant.The present invention utilizes the waste heat of dryer or directly utilizes the hot dry-air blast of dryer to solve compost this technical barrier that is difficult to heat up in winter.So not only can guarantee the quick fermentation in the composting process, but also can make full use of the unnecessary heat energy of dryer.
Description of drawings
The control flow chart of Fig. 1 hot dry-air blast mode for the present invention adopts.
Fig. 2 utilizes the device synoptic diagram of the hot dry-air blast of hotblast stove generation for the present invention.
Fig. 3 utilizes the device synoptic diagram of the hot dry-air blast of dryer generation for the present invention.
Fig. 4 is the design sketch of embodiment 1.
Fig. 5 is the design sketch of embodiment 2.
Embodiment
Please, utilize the device of the hot dry-air blast of hotblast stove for the present invention in conjunction with Fig. 2.By induced draft fan 4 the hot dry-air blast of hotblast stove 1 is delivered to the total blast pipe 8 of compost Chi by hot blast induced exhaust 3, thereby hot dry-air blast is introduced the compost heap body.Be provided with three vent-pipes between hot blast induced exhaust 3 and the total blast pipe 8 of compost Chi, install a gas valve 6 in the middle of this three vent-pipe, this gas valve 6 can be an electromagnetic gas valve.Wherein first end of this three vent-pipe links to each other with hot blast induced exhaust 3, and its connecting place is provided with a temperature sensor 5, and wherein second end is located in the compost heap body, links to each other with the total blast pipe 8 of compost Chi, and wherein the 3rd end communicates with atmosphere.By adjustments of gas valve 6 to realize the ratio of hot dry-air blast and air.Wherein three vent-pipes and hot blast induced exhaust connecting place, and three vent-pipes and the total blast pipe connecting place of compost Chi are equipped with temperature sensor 5.
The present invention by induced draft fan 4 just the hot dry-air blast of hotblast stove 1 cause compost pond blast main 8 by hot blast induced exhaust 3, by the data that two temperatures transmitter 5 is gathered, the ratio that Controlling System 7 is regulated hot dry-air blast and air according to the temperature conditions of heap body, air, hot dry-air blast by electromagnetic valve 6.When air themperature is lower than set(ting)value (as-5 ℃), and the heap body is when being in the compost fs (microorganism culturing phase), and Controlling System begins to open induced draft fan, is regulated the wind-warm syndrome of leading to compost pond blast main by electromagnetic valve according to hot dry-air blast, air themperature; After Controlling System judged that composting process enters subordinate phase (being rapidly heated the phase) or subordinate phase, Controlling System was sent instruction, and induced draft fan quits work, and electromagnetic valve is in closing condition.
Please read Fig. 3, for the present invention utilizes the device of the waste heat of dryer 2 as hot dry-air blast.Because dryer 2 tail gas humidity are very big, can produce a large amount of water of condensation as directly blasting fermentation heap cognition in heap body bottom, be unfavorable for air blast oxygenation.Improve the moisture content of composting production in addition greatly, increased the cost of following process.Dryer vent gas treatment pipe 9 has tens to more than 20 meters long, and caliber is roughly at 0.8～1.2 meter, and the temperature of tail gas is roughly at 60～90 ℃.Its method is to be 0.6～0.8 meter hot blast induced exhaust 3 at the inner caliber of placing of dryer vent gas treatment pipe, and these hot blast induced exhaust 3 one sides and atmosphere are provided with a connected entrance 10, and opposite side is towards the total blast pipe 8 of compost Chi.In hot blast induced exhaust 3, air carries out heat exchange with the hot blast of taking from offgas duct.Because less at compost blast volume in early stage, and be the intermittent type air blast, therefore can satisfy the compost air quantity requirement in early stage substantially by the air quantity in the heat exchanger tube hot blast.When compost enters the phase III when (high-temperature control phase), blast heat radiation and temperature control that the higher wind of temperature is unfavorable for piling body.At this moment, electromagnetic valve 7 is closed, and directly adopts the outside air supplemental oxygen.
Embodiment 1:
If two compost treatment tests, composting material adopts municipal sludge.The municipal sludge moisture content is 80.5%, and amendment adopts wood chip.Compost pond geometrical dimension is 10m * 8m * 1.6m (length * wide * height), experiment control system is the compost dedicated control system and the software Compsoft1.0 (soft work is stepped on word No. 0007462) of BeiJing ZhongKe rich connection environmental protection new and high technology company limited research and development, the hotblast stove geometrical dimension is 1.6m * 1.6m * 2.4m (length * wide * height), and hot blast induced exhaust caliber is 0.6 meter.Compost treatment one adopts the inventive method one, promptly adopts the method for drawing hot dry-air blast to improve compost pond inlet air temperature, according to hot dry-air blast temperature and outside air temperature, by electromagnetic valve with temperature regulation to 50～65 of compost pond airduct ℃; Compost treatment two is directly replenished outside air (temperature is below 0 ℃).Envrionment temperature (being outside air temperature) and two compost pond intensification situations such as Fig. 4.
From the intensification design sketch of Fig. 4 as can be seen, in envrionment temperature than (7～1 ℃) under the low condition, adopt the heap body (handling) of the inventive method one can be warming up to 50 ℃ smoothly, and heat-up rate is very fast, and keep more than 50 ℃ (the compost heap temperature that satisfies " decontamination of human excreta hygienic standard " GB7959-87 regulation requires in the harmless treatment that continues 5～7 days more than 50 ℃) about 10 days, make composting production reach the requirement of sterilization, deodorizing, stabilization; Directly utilize heap body (the handling two) heat-up rate of outside air slower, and do not reach innoxious desired high-temperature duration.
Embodiment 2:
If two compost treatment tests, composting material adopts municipal sludge.Moisture content is 79.2%, and amendment adopts wood chip.Compost pond geometrical dimension is 10m * 8m * 1.6m (length * wide * height), experiment control system be the special compost of BeiJing ZhongKe rich connection environmental protection new and high technology company limited research and development with Controlling System and software Compsoft2.0, the hotblast stove geometrical dimension is 1.6m * 1.6m * 2.4m (length * wide * height).Compost treatment one adopts the inventive method two, and promptly adopt heat exchange directly to utilize the method for dryer waste heat: hot blast induced exhaust caliber is 0.8 meter, 14 meters of length overalls, and by heat exchange, air themperature is 35～50 ℃ in the heating duct.Compost treatment two directly adopts outside air (temperature is below 9 ℃).Envrionment temperature (being outside air temperature) and two compost pond intensification situations such as Fig. 5.
From the intensification design sketch of Fig. 5 as can be seen, under the lower condition of envrionment temperature (8.5～9.0 ℃), adopt the heap body (handling) of the inventive method two can be warming up to 50 ℃ smoothly, and heat-up rate is very fast, and, reached innoxious requirement keeping more than 50 ℃ 9.5 days.And directly adopt heap body (the handling two) heat-up rate of outside air slower, holding time more than 50 ℃ only continues 4 day time, does not reach the desired high-temperature duration of GB7959-87.
Claims (4)
1, a kind of device that improves success rate of compost is introduced compost heap body by the hot blast induced exhaust with hot dry-air blast by hotblast stove, is provided with three vent-pipes between hot blast induced exhaust and compost heap body, installs a gas valve in the middle of this three vent-pipe; Wherein first end of this three vent-pipe links to each other with the hot blast induced exhaust, wherein second end be located at the total blast pipe of the intravital compost Chi of compost heap and link to each other, wherein the 3rd end communicates with atmosphere; By the adjustments of gas valve to realize the ratio of hot dry-air blast and air;
Wherein, three vent-pipes and hot blast induced exhaust connecting place are provided with temperature sensor;
Wherein, the total blast pipe connecting place of three vent-pipes and compost Chi is provided with temperature sensor.
2, device as claimed in claim 1, wherein the hot blast induced exhaust connects an induced draft fan, by this induced draft fan hot dry-air blast is introduced in the compost heap body.
3, device as claimed in claim 1, wherein gas valve is a gas solenoid valve door, is controlled by a Controlling System.
4, device as claimed in claim 1, hot dry-air blast are wherein taken from the dryer afterbody through the hot blast after heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100731708A CN100522888C (en) | 2006-04-10 | 2006-04-10 | Method and device for increasing success rate of compost |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100731708A CN100522888C (en) | 2006-04-10 | 2006-04-10 | Method and device for increasing success rate of compost |
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| Publication Number | Publication Date |
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| CN101054319A CN101054319A (en) | 2007-10-17 |
| CN100522888C true CN100522888C (en) | 2009-08-05 |
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| CNB2006100731708A Expired - Fee Related CN100522888C (en) | 2006-04-10 | 2006-04-10 | Method and device for increasing success rate of compost |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101333124A (en) * | 2008-08-02 | 2008-12-31 | 周向德 | Quick fermentation process of farm manure |
| CN105272432B (en) * | 2015-10-26 | 2018-07-13 | 厦门市联谊吉源环保工程有限公司 | A kind of anaerobism biogas residue rapid aging processing equipment and processing method |
| CN106396774A (en) * | 2016-11-02 | 2017-02-15 | 北京合清环保技术有限公司 | Integrated aerobic fermentation equipment |
| CN112457084A (en) * | 2020-12-10 | 2021-03-09 | 广州中嘉装备科技有限公司 | Organic fertilizer fermentation process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1397527A (en) * | 2001-07-18 | 2003-02-19 | 中国科学院地理科学与资源研究所 | Autocontroller for preparing compost in winter |
| CN1397528A (en) * | 2001-07-18 | 2003-02-19 | 陈同斌 | Autocontroller for compost |
| CN2595805Y (en) * | 2002-12-30 | 2003-12-31 | 湖南大学 | Composting device for solid organic waste material |
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2006
- 2006-04-10 CN CNB2006100731708A patent/CN100522888C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1397527A (en) * | 2001-07-18 | 2003-02-19 | 中国科学院地理科学与资源研究所 | Autocontroller for preparing compost in winter |
| CN1397528A (en) * | 2001-07-18 | 2003-02-19 | 陈同斌 | Autocontroller for compost |
| CN2595805Y (en) * | 2002-12-30 | 2003-12-31 | 湖南大学 | Composting device for solid organic waste material |
Non-Patent Citations (1)
| Title |
|---|
| 猪粪好氧堆制不同阶段氧气含量变化特征. 陈同斌，郑玉琪，高定，孔建松，罗维.应用生态学报，第15卷第11期. 2004 * |
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| CN101054319A (en) | 2007-10-17 |
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Granted publication date: 20090805 Termination date: 20180410 |