CN110434154A - Aerobic aeration type refuse landfill temperature predicting method - Google Patents
Aerobic aeration type refuse landfill temperature predicting method Download PDFInfo
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- CN110434154A CN110434154A CN201910753326.4A CN201910753326A CN110434154A CN 110434154 A CN110434154 A CN 110434154A CN 201910753326 A CN201910753326 A CN 201910753326A CN 110434154 A CN110434154 A CN 110434154A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000005273 aeration Methods 0.000 title claims abstract description 17
- 239000010813 municipal solid waste Substances 0.000 claims description 21
- 238000012544 monitoring process Methods 0.000 claims description 18
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 239000005416 organic matter Substances 0.000 claims description 9
- 238000010835 comparative analysis Methods 0.000 claims description 5
- 238000012937 correction Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 abstract description 14
- 238000004880 explosion Methods 0.000 abstract description 4
- 230000036760 body temperature Effects 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 19
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 239000000243 solution Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- -1 moisture content Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to technical field of waste treatment more particularly to a kind of aerobic aeration type refuse landfill temperature predicting methods.The essential attribute parameter of refuse landfill where the prediction technique comprises determining that；Calculate temperature prediction result of the junk-heap body under essential attribute Parameter Conditions；Measure the temperature results of junk-heap body；The temperature results obtained to prediction are modified.The present invention can provide solution for the prediction of junk-heap body temperature in aerobic ventilation process, it can avoid the generation that fire and explosion accident occur for mixed gas, the efficient operation for having ensured aerobic ventilating system to greatest extent simultaneously has preferable practicability and flexibility in aerobic ventilating engineering.
Description
Technical field
The invention belongs to technical field of waste treatment more particularly to a kind of aerobic aeration type refuse landfill temperature prediction sides
Method.
Background technique
Aerobic ventilation is a kind of main way of refuse landfill in-situ immobilization, and technical principle is to inject air into rubbish
In heap body, make the accelerated degradation under aerobic environment of the organic matter in rubbish, so that reaching reduces methane concentration, reduces Leachate site
Discharge and the purpose in situ for eliminating pollution source.
Organic matter degradation rate in aerobic ventilation process is accelerated, and the temperature of junk-heap body is caused to increase.Due to sky
After gas injects junk-heap body, the intracorporal methane of oxygen and rubbish heap in air occurs chemical reaction and generates carbon dioxide and water,
The two synchronous consumption.But junk-heap body has strong heterogeneity, and there are left portion in some regions in whole landfill yard
Methane is divided not to be consumed completely.Methane without being consumed is collected together with the oxygen constantly injected by extraction well.Work as rubbish
Rubbish heap is intracorporal when the temperature is excessively high (generally more than 60 DEG C), and the mixed gas being collected into easily causes fire or explosion accident, gives
The efficient and safe operation of aerobic ventilating system brings huge hidden danger.For this purpose, aerobic landfill yard is both needed to junk-heap body
Temperature is monitored.When heap temperature rises to 55 DEG C or more, monitoring system is alarmed, and takes control measure to reduce
Heap temperature.
Since refuse landfill takes up a large area, temperature sensor is and long-range in the intracorporal embedded limited amount of rubbish heap
Control system can only alarm according to the temperature results that monitoring obtains, and existing monitoring and warning technology cannot achieve warm in heap body
The prediction of degree.In addition China region is wide, the rubbish such as moisture content, organic matter in different zones garbage loading embeading attribute difference compared with
Greatly, the gas injection Intensity Design of aerobic ventilation also has difference.It would therefore be highly desirable to propose that one kind can be according to live actual condition to aerobic logical
The method that junk-heap body temperature is predicted during wind, the safe operation for aerobic ventilating system provide decision-making foundation.
Summary of the invention
In view of the above existing problems in the prior art, the present invention provides a kind of aerobic aeration type refuse landfill temperature predictions
Method provides decision-making foundation with the safe operation for aerobic ventilating system.
The present invention through the following technical solutions to achieve the above objectives:
A kind of aerobic aeration type refuse landfill temperature predicting method, the prediction technique include:
The essential attribute parameter of refuse landfill where determining；
Calculate temperature prediction result of the junk-heap body under essential attribute Parameter Conditions；
Measure the temperature results of junk-heap body；
The temperature results obtained to prediction are modified.
Further, the essential attribute parameter of the refuse landfill includes: garbage loading embeading age, the content of organic matter, heap body
Initial temperature, moisture content, gas injection intensity and injection gas temperature.
Further, the temperature prediction for calculating junk-heap body under essential attribute Parameter Conditions is as a result, specifically include:
According to formula 1) obtain rate of heat release R, the formula 1) are as follows:
R=R ' (T) * f (t ', os, QI,θ,T0,TI), formula 1)；
The formula 1) in, t ' is garbage loading embeading age (yr)；Os is the content of organic matter (%)；QIFor gas injection intensity (m3/h)；
θ is moisture content (%)；T0For initial temperature；TIFor the temperature for injecting gas；R ' (T) is potential rate of heat release (J m-3s-1)；
Utilize formula 2) temperature prediction of the junk-heap body under essential attribute Parameter Conditions is calculated as a result, the formula 2)
Are as follows:
The formula 2) in, αsFor thermal capacitance (the J m of junk-heap body-3K-1)；τ is the coefficient of heat conduction (W m-1K-1)；αgFor gas
Thermal capacitance (the J m of body-3K-1)；VgFor gas flow rate (m s-1)；R is rate of heat release (J m-3s-1)；T is the rubbish heap that prediction obtains
Temperature；For the differential operator of temperature.
Further, the temperature results of the measurement junk-heap body, specifically include:
By the temperature sensor of junk-heap body site layout project, monitors and be averaged to obtain the temperature knot for determining junk-heap body
Fruit.
Further, it predicts that obtained temperature results are modified for described pair, specifically includes:
The difference of the temperature results of the temperature results and prediction that are monitored by comparative analysis carries out the temperature configuration of prediction
Compensating approach.
Further, the difference of the temperature results of the temperature results and prediction that are monitored by comparative analysis, to prediction
Temperature configuration compensates and corrects, and specifically includes:
During the temperature results of contrastive detection and the temperature results of prediction, the target for optimizing calculating is that error amount is minimum
Change, pass through formula 3) complete, the formula 3) are as follows:
The formula 3) in,For approximate function；F(Ti) it is the function that the temperature results data of monitoring form, n is
Data bulk summation；
Based on formula 3) to the correction result of temperature, pass through formula 4) rate of heat release is modified again, the formula
4) are as follows:
R '=R*w, formula 4)；
The formula 4) in, R ' is revised rate of heat release；W is modifying factor；
Obtained revised rate of heat release is introduced into formula 2) in, with the temperature prediction result after being optimized.
Further, the modifying factor passes through formula 5) obtain, the formula 5) are as follows:
W=f (Ta, T ') and formula 5)；
The formula 5) in, T ' is the mean temperature result (K) that monitoring obtains；TaTo predict obtained mean temperature result
(K)。
The beneficial effects of the present invention are:
A kind of aerobic aeration type refuse landfill temperature predicting method provided by the present invention, due to the prediction result of temperature
It is to be calculated under conditions of the essential attribute parameter based on refuse landfill, so as to be obtained according to live actual condition
The variation tendency of temperature, and can realize in advance according to field monitoring as a result, the trend to temperature change is modified to temperature
The prediction and anticipation of elevation process are spent, and has ensured the reliability of prediction result, can be junk-heap body in aerobic ventilation process
The prediction of temperature provides solution, can avoid the generation that fire and explosion accident occur for mixed gas, while to greatest extent
The efficient operation for having ensured aerobic ventilating system has preferable practicability and flexibility in aerobic ventilating engineering.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of flow diagram of aerobic aeration type refuse landfill temperature predicting method of the embodiment of the present invention；
Fig. 2 is revised temperature prediction result and the temperature without obtaining by modified temperature prediction result and monitoring
The comparison schematic diagram of value.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 is a kind of flow diagram of aerobic aeration type refuse landfill temperature predicting method of the embodiment of the present invention,
In conjunction with Fig. 1, which includes:
S1: the essential attribute parameter of refuse landfill where determining；
S2: temperature prediction result of the junk-heap body under essential attribute Parameter Conditions is calculated；
S3: the temperature results of junk-heap body are measured；
S4: the temperature results obtained to prediction are modified.
A kind of aerobic aeration type refuse landfill temperature predicting method provided by the embodiment of the present invention, it is pre- due to temperature
It surveys the result is that being calculated under conditions of the essential attribute parameter based on refuse landfill, so as to according to the practical work in scene
Condition obtains the variation tendency of temperature, and can realize and mention according to field monitoring as a result, the trend to temperature change is modified
Preceding prediction and anticipation to temperature elevation process, and ensured the reliability of prediction result, it can be rubbish in aerobic ventilation process
The prediction of rubbish heap temperature provides solution, can avoid the generation that fire and explosion accident occur for mixed gas, while maximum
The efficient operation for having ensured aerobic ventilating system of limit has preferable practicability and flexibility in aerobic ventilating engineering.
Specifically, in the S1 of the embodiment of the present invention, the essential attribute parameter of refuse landfill includes: garbage loading embeading age, has
Machine matter content, heap body initial temperature, moisture content, gas injection intensity and injection gas temperature.
The S2 of the embodiment of the present invention is specifically included:
According to formula 1) obtain rate of heat release R, the formula 1) are as follows:
R=R ' (T) * f (t ', os, QI,θ,T0,TI), formula 1)；
The formula 1) in, t ' is garbage loading embeading age (yr)；Os is the content of organic matter (%)；QIFor gas injection intensity (m3/h)；
θ is moisture content (%)；T0For initial temperature；TIFor the temperature for injecting gas；R ' (T) is potential rate of heat release (J m-3s-1)；
Utilize formula 2) temperature prediction of the junk-heap body under essential attribute Parameter Conditions is calculated as a result, the formula 2) it is temperature
Equation of transfer is spent, the formula 2 is passed through) temperature can be calculated with the changing rule of gas injection runing time, the formula 2)
Are as follows::
The formula 2) in, αsFor thermal capacitance (the J m of junk-heap body-3K-1)；τ is the coefficient of heat conduction (W m-1K-1)；αgFor gas
Thermal capacitance (the J m of body-3K-1)；VgFor gas flow rate (m s-1)；R is rate of heat release (J m-3s-1)；T is the rubbish heap that prediction obtains
Temperature；For the differential operator of temperature.
In aerobic ventilating system operational process, when related operating parameter changes, the prediction result of temperature also can be with
Change.
The S3 of the embodiment of the present invention, specifically includes:
By the temperature sensor of junk-heap body site layout project, monitors and be averaged to obtain the temperature knot for determining junk-heap body
Fruit.
The S4 of the embodiment of the present invention, specifically includes:
The difference of the temperature results of the temperature results and prediction that are monitored by comparative analysis carries out the temperature configuration of prediction
Compensating approach, to ensure the reliability of prediction result.
Specifically, during the temperature results of contrastive detection and the temperature results of prediction, optimize the target of calculating to miss
Difference minimizes, and passes through formula 3) complete, the formula 3) are as follows:
The formula 3) in,For approximate function；F(Ti) it is the function that the temperature results data of monitoring form, n is
Data bulk summation；
Based on formula 3) to the correction result of temperature, pass through formula 4) rate of heat release is modified again, the formula
4) are as follows:
R '=R*w, formula 4)；
The formula 4) in, R ' is revised rate of heat release；W is modifying factor；
Obtained revised rate of heat release is introduced into formula 2) in, with the temperature prediction result after being optimized.By
In by obtaining revised rate of heat release, bringing formula 2 into this way) in temperature is predicted again, the temperature predicted in this way
It is worth closer to actual conditions.
The modifying factor of the embodiment of the present invention passes through formula 5) obtain, the formula 5) are as follows:
W=f (Ta, T ') and formula 5)；
The formula 5) in, T ' is the mean temperature result (K) that monitoring obtains；TaTo predict obtained mean temperature result
(K)。
It is specific to use:
Live aerobic ventilation experiment is carried out to certain refuse landfill demonstration place in Hubei Province, to rubbish during test
The temperature value of heap body is monitored, and is corrected by monitoring obtained temperature value to prediction result, revised temperature
Prediction result is closer to actual monitoring result.
The house refuse heap body landfill age at scene is 9 years, preceding 20 days rate of venting about 210m3/ h, the ventilation after 20 days
Rate about 320m3/h.Ventilation monitors the intracorporal temperature of rubbish heap after starting.Prediction junk-heap body is obtained by sampling
Property parameters needed for temperature are as follows: the content of organic matter 10.2%, initial aqueous rate 41.3%, and initial temperature is 31.1 DEG C,
The thermal capacitance 3.4*10 of junk-heap body6(J m-3K-1), the coefficient of heat conduction is 0.23W m-1K-1, the thermal capacitance of gas is 1140J m-3K-1。
Ventilation process continues 220 days, is monitored daily to rubbish temperature.It is right according to the average temperature value that monitoring obtains
Heat release rate is modified, and revised temperature prediction result and the modified temperature prediction result of no process are obtained with monitoring
Temperature value compare (see Fig. 2).As figure shows, it 20 days before ventilation, corrects and is more connect without modified prediction result
Closely.After ventilation is lasting to be carried out, the error between temperature prediction result and monitoring result under no correction conditions obviously gradually increases
Greatly.After ventilation carries out leading 60 days, the error under no correction conditions reaches 4-8 DEG C, and revised error is only 2 DEG C.By
This case it is found that with ventilation progress, predict aerobic reaction caused by temperature change need to be modified parameter, after amendment
Prediction result can significantly reduce prediction error.
Following illustrated embodiment is better embodiment of the invention, only is used to facilitate to illustrate the present invention, not to this hair
The bright limitation made under any form has usually intellectual in any technical field, if not departing from the proposed skill of the present invention
In the range of art feature, using the equivalent embodiment for locally changing or modifying made by disclosed technology contents, and
Without departing from technical feature content of the invention, in the range of still falling within the technology of the present invention feature.
Claims (7)
1. a kind of aerobic aeration type refuse landfill temperature predicting method, which is characterized in that the prediction technique includes:
The essential attribute parameter of refuse landfill where determining；
Calculate temperature prediction result of the junk-heap body under essential attribute Parameter Conditions；
Measure the temperature results of junk-heap body；
The temperature results obtained to prediction are modified.
2. a kind of aerobic aeration type refuse landfill temperature predicting method according to claim 1, which is characterized in that described
The essential attribute parameter of refuse landfill includes: that garbage loading embeading age, the content of organic matter, heap body initial temperature, moisture content, gas injection are strong
Degree and injection gas temperature.
3. a kind of aerobic aeration type refuse landfill temperature predicting method according to claim 2, which is characterized in that described
Temperature prediction of the junk-heap body under essential attribute Parameter Conditions is calculated as a result, specifically including:
According to formula 1) obtain rate of heat release R, the formula 1) are as follows:
R=R ' (T) * f (t ', os, QI,θ,T0,TI), formula 1)；
The formula 1) in, t ' is garbage loading embeading age (yr)；Os is the content of organic matter (%)；QIFor gas injection intensity (m3/h)；θ is
Moisture content (%)；T0For initial temperature；TIFor the temperature for injecting gas；R ' (T) is potential rate of heat release (J m-3s-1)；
Utilize formula 2) temperature prediction of the junk-heap body under essential attribute Parameter Conditions is calculated as a result, the formula 2) are as follows:
The formula 2) in, αsFor thermal capacitance (the J m of junk-heap body-3 K-1)；τ is the coefficient of heat conduction (W m-1 K-1)；αgFor gas
Thermal capacitance (J m-3 K-1)；VgFor gas flow rate (m s-1)；R is rate of heat release (J m-3s-1)；T is the junk-heap body that prediction obtains
Temperature；For the differential operator of temperature.
4. a kind of aerobic aeration type refuse landfill temperature predicting method according to claim 3, which is characterized in that described
The temperature results for measuring junk-heap body, specifically include:
By the temperature sensor of junk-heap body site layout project, monitors and be averaged to obtain the temperature results for determining junk-heap body.
5. a kind of aerobic aeration type refuse landfill temperature predicting method according to claim 4, which is characterized in that described
The temperature results obtained to prediction are modified, and are specifically included:
The difference of the temperature results of the temperature results and prediction that are monitored by comparative analysis, compensates the temperature configuration of prediction
Amendment.
6. a kind of aerobic aeration type refuse landfill temperature predicting method according to claim 5, which is characterized in that pass through
The difference of the temperature results of the temperature results and prediction of comparative analysis monitoring, compensates and corrects the temperature configuration of prediction, has
Body includes:
During the temperature results of contrastive detection and the temperature results of prediction, optimizes the target of calculating and is minimized for error amount,
Pass through formula 3) complete, the formula 3) are as follows:
The formula 3) in,For approximate function；F(Ti) it is the function that the temperature results data of monitoring form, n is data
Quantity summation；
Based on formula 3) to the correction result of temperature, pass through formula 4) rate of heat release is modified again, the formula 4) are as follows:
R '=R*w, formula 4)；
The formula 4) in, R ' is revised rate of heat release；W is modifying factor；
Obtained revised rate of heat release is introduced into formula 2) in, with the temperature prediction result after being optimized.
7. a kind of aerobic aeration type refuse landfill temperature predicting method according to claim 6, which is characterized in that described
Modifying factor passes through formula 5) obtain, the formula 5) are as follows:
W=f (Ta, T ') and formula 5)；
The formula 5) in, T ' is the mean temperature result (K) that monitoring obtains；TaTo predict obtained mean temperature result (K).
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| CN105956399B (en) * | 2016-04-29 | 2018-02-09 | 广州视源电子科技股份有限公司 | A kind of temperature predicting method and electronic thermometer |
| CN206459769U (en) * | 2016-11-11 | 2017-09-01 | 北京国环清华环境工程设计研究院有限公司 | A kind of on-Line Monitor Device of Landfill temperature |
| CA3031977A1 (en) * | 2018-01-31 | 2019-07-31 | Aerobic Landfill Technologies Inc. | System and methods for monitoring and controlling an aerobic landfill bioreactor |
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