CN102494722A - Greenhouse gas emission monitoring method of town household refuse disposal system - Google Patents

Abstract

The invention discloses a greenhouse gas emission monitoring method of a town household refuse disposal system. By monitoring methane gas and refuse components and revising the refuse components, degradable organic carbon content, proportion of methane in refuse landfill gases, a half-life period and the like, the greenhouse gas emission monitoring method puts forward selection principles of the parameters under different conditions selectively, performs connection on instruments on site and upper computer working stations and is capable of updating data in real time. The greenhouse gas emission monitoring method reduces monitoring cost, is stable in monitoring results and high in accounting accuracy.

Description

A kind of application of city life garbage disposal system greenhouse gas emission monitoring method

Technical field

The present invention relates to the greenhouse gas emission field, particularly a kind of application of city life garbage disposal system greenhouse gas emission monitoring method.

Background technology

Greenhouse gases (GHG) discharging of house refuse municipal solid wastes such as (MSW) in processing procedure is the important source of greenhouse gases.For formulating house refuse reduction of greenhouse gas discharge strategy targetedly; Chinese scholars has been studied the greenhouse gas emission rule of different disposal modes such as landfill, burning; And adopt the recommend method of evaluation of life cycle method (LCA), Intergovernmental Panel on Climate Change of the United Nations (IPCC) respectively; And, domestic rubbish disposal technology and entire process system are carried out greenhouse gas emission adjust and analyze based on the accounting method of Clean Development Mechanism (CDM).

Iff adopts adjusts model; According to model parameter default value measuring and calculating greenhouse gas emissions; Because the object of adjusting is complicated and changeable, the air pressure that is faced, temperature and constituent are different, can not reflect the true greenhouse gas emissions of adjusting object according to the parameter default value merely; Confirm discharge capacity if only depend on Monitoring Data; Because the house refuse composition is totally different, the data difference that the different mining sampling point is gathered is huge, and monitoring receives nature, artifical influence factor is numerous; Monitoring result is unstable, and if to seek out the monitoring cost that precise information needs higher.So more satisfactory method is to combine Monitoring Data to confirm to adjust Model parameter; Especially when selecting emission factor; Will be as much as possible through investigation on the spot or monitoring; The emission factor that is accurately reflected application of city life garbage discharge characteristics under the different condition is drawn up the process and the quantity of greenhouse gas emission according to adjusting pattern die again.

The monitoring method of greenhouse gases comprises at present: model assessment method, flux case method and micrometeorology method etc.Model assessment method principle is according to the concentration gradient of difference alternate (water-gas) gas componant and uses the Fick law to come estimated flux that it generally only is applicable to the flux estimation of water-aerosphere face.The cost of flux case method is low, easy to operate, highly sensitive, is the common method of greenhouse gases monitoring.Compare with flux case method, the micrometeorology method is a kind of open measuring method, is used for the measurement Research of Lu Sheng ecologic environment greenhouse gases more, and its gas flux value of surveying is than (being generally 100～1000m) mean value in the large space scope.

To the characteristics of city refuse landfill aerogenesis, select for use flux case method to monitor usually.But the flux casing has disturbance to object of observation, has inside and outside the case that certain pressure is poor, a temperature difference etc., makes test and actual conditions have the situation that necessarily departs from.Flux case method comprises static chamber and dynamic case, and the development from static chamber to dynamic case has overcome the problems referred to above to a certain extent, but dynamically case itself also has certain defective: on the one hand; Dynamically the box body balanced flow will disturb the interfacial gases transmission; On the other hand, under the lower situation of emission flux of gas, the tested gas concentration difference of the outlet of casing and porch is very little; Thereby require that very high measuring accuracy is arranged, otherwise can cause bigger measuring error.

The inventor finds in realizing process of the present invention, the shortcoming and defect below existing at least in the prior art:

The cost of monitoring method of the prior art is high, monitors suffered influence factor complicacy, monitoring result instability etc., and the accuracy of influence accounting.

Summary of the invention

The technical matters that the present invention will solve is to provide a kind of application of city life garbage disposal system greenhouse gas emission monitoring method, and this method has reduced the cost of monitoring, and monitoring result is stable and accuracy that adjust is higher, sees hereinafter for details and describes:

A kind of application of city life garbage disposal system greenhouse gas emission monitoring method said method comprising the steps of:

(1) gather the monitoring sample respectively from 6 types of different rubbish sources that produce, obtain the content of organic carbon, and with the content typing host computer workstation of organic carbon as parameter;

(2) when in the landfill operation stage and when not having the methane collection system, be the unit, realize the landfill of rubbish, adopt the static chamber method that methane content is monitored, gather sequential control system through methane gas analyser three locations and obtain first methane content with the step;

(3) when in the closing stage and when not having said methane collection system; Before bleeding, measure the natural pressure and the methane content initial value of the landfill gas of all experiment wells; The gas collection well is bled and measured bleed negative pressure and landfill gas composition, and the pressure in monitor well monitoring landfill gas changes with composition simultaneously, and setting pressure is popped one's head in; Confirm the coverage of bleeding, said methane gas analyzer three ground are gathered sequential control system and are obtained second methane content based on pressure and composition;

(4) when said methane collection system, the utilization flue gas analyzer is monitored collecting the well methane concentration, gathers sequential control system through said methane gas analyser three locations and obtains leucoaurin content;

(5) said first methane content, said second methane content or said leucoaurin content are sent to said host computer workstation through data service center, obtain the gas production rate of unit weight rubbish in the unit interval through said host computer workstation;

(6) adopt the single order evanescent mode, obtain the discharge capacity of methane according to the content of said organic carbon, said first methane content, said second methane content and said leucoaurin content;

(7) content according to said organic carbon obtains CO ₂And N ₂The discharge capacity of O;

(8) said host computer workstation is to the discharge capacity of said methane, said CO ₂And N ₂The discharge capacity of O is handled, and obtains data and curves figure;

Wherein, optional step (2) in the refuse landfill landfill process of no said methane collection system, the back optional step (3) of closing, and in the refuse landfill that said methane collection system is arranged omnidistance optional step (4).

The discharge capacity of said methane is specially:

Adopt the single order evanescent mode, the discharge capacity of said methane:

E _CH4＝DDOC _mdecompT×F×16/12

E _CH4CH for T landfill municipal solid wastes ₄Discharge capacity, unit is a ton; DDOC _MdecopTDDOC for the T decomposition _mF is the CH in the garbage loading embeading gas that produces ₄Ratio; 16/12 is CH ₄/ C molecular weight ratio;

T solid waste at the year end is handled the DDOC of place accumulation _m:

DDOC _maT＝DDOC _mdT+(DDOC _maT-1×e ^-k)

The DDOC that T decomposes _m:

DDOC _mdecompT＝DDOC _maT-1×(1-e ^-k)

T is the inventory time; DDOC _MaTUnit is a ton; DDOC _MaT-1Handle the DDOC of place accumulation for T-1 terminal hour solid waste _m, unit is a ton; DDOC _MdTFor T deposits to the DDOC that solid waste is handled the place _m, unit is a ton; K is reaction constant, k=ln (2)/t _1/2, unit is year, t _1/2Be time half life period, wherein, said time half life period is confirmed according to the gas production rate of said unit weight rubbish in the unit interval.

Said CO ₂Discharge capacity:

$E_{{\mathrm{CO}}_2}=\mathrm{MSW}\×\underset{j}{\mathrm{\Σ}}({\mathrm{WF}}_j\×{\mathrm{dm}}_j\×{\mathrm{CF}}_j\×{\mathrm{FCF}}_j\×{\mathrm{OF}}_j)\×44/12$

For burning the CO of municipal solid wastes ₂Discharge capacity, unit is a ton; WF _jNumber percent for ingredient j in the solid waste; Dm _jBe the dry matter percentage in the ingredient j; CF _jRatio for total carbon in the dry of ingredient j; FCF _jBe the ratio of mineral carbon in total carbon; OF _jBe oxidation factor, get 100%; 44/12 is CO ₂/ C molecular weight ratio.

Said N ₂The discharge capacity of O:

$E_{N_{2}O}=\mathrm{MSW}\×{\mathrm{EF}}_{N_{2}O}\×{10}^{-6}\×{\mathrm{GWP}}_{N_{2}O}$

For burning municipal solid wastes discharging N ₂The CO2 emission equivalent that O produces, unit are ton; The municipal solid wastes quality of MSW for burning, unit is a ton;

Be N ₂The emission factor of O; GWP _N2OBe N ₂Greenhouse effect and CO that O produces ₂The multiple of comparing gets 310.

Said method also comprises: the indirect discharge capacity to upstream and downstream is monitored,

The indirect discharge capacity at the upper reaches comprises: upper reaches activity level and emission factor multiply each other and obtain CO ₂Discharge capacity; Wherein, said activity level is specially: the energy-output ratio and the power consumption that are consumed in the transportation rubbish process;

The indirect discharge capacity in downstream comprises: from output electric weight on to CO ₂CER monitor, be specially: after the domestic rubbish disposal externally the electric weight of output be multiplied by the CO of local generating ₂The average emission coefficient, the CO of said local generating ₂The average emission coefficient is the datum line emission factor, is the weighted mean of electric weight limit emission factor and capacity limit emission factor.

A kind of application of city life garbage disposal system greenhouse gas emission monitoring method provided by the invention compared with prior art has following advantage:

The present invention is through monitoring methane gas and waste component, to the CH in component of refuse, degradable organic carbon content, the garbage loading embeading gas ₄Ratio and half life period etc. revise, and bring forward the selection principle of above-mentioned parameter under the different condition, field instrument and host computer workstation are got in touch, but the real-time update data; The present invention has reduced the cost of monitoring, and monitoring result is stable and accuracy that adjust is higher.

Description of drawings

Fig. 1 is the structural representation of a kind of application of city life garbage disposal system greenhouse gas emission monitoring provided by the invention.

Embodiment

For making the object of the invention, technical scheme and advantage clearer, embodiment of the present invention is done to describe in detail further below in conjunction with accompanying drawing.

The current standard that all lacks both at home and abroad to the greenhouse gases monitoring method, and lack especially to the standard monitoring method of domestic waste greenhouse gas emission, press for the purpose that combines to adjust and formulate a cover standard monitoring index and a method.To monitor and the accounting unification, set up the monitoring Accounting System of a cover to domestic waste different disposal mode.

In order to reduce the monitoring account cost; Utilize minimum monitoring index to improve accuracy; Whole application of city life garbage disposal system greenhouse gas emission monitoring method is made up of three parts; According to technical requirement, field layer is gathered signal such as degradable organic carbon content, natural pressure and the methane content that monitoring obtains under the different condition and is sent to data acquisition station.Data acquisition station is done rough handling to the acquired original data, adopts the EPA mode that all data high-speeds are sent to the host computer workstation.The host computer workstation calculates landfill and the reduction of greenhouse gas discharge amount of burning two kinds of processing modes through the parameter of artificial setting with the method that the data parameters that collects provides with hereinafter.Data after the host computer workstation will calculate in real time deposit in the database and preserve.

House refuse produces greenhouse gases and is mainly methane; Behind the garbage loading embeading; Because the activity of microorganism; Degradable organic component in the rubbish is decomposed gradually, and this process can roughly be divided into five stages: hydrolysis/aerobic degradation stage, hydrolysis/fermentation stage, souring stage, product methane phase and oxidation stage.CH in the rubbish ₄Discharging is based on the single order damped system, and the method hypothesis is at CH ₄And CO ₂In the many decades that forms, (the degradable organic carbon, DOC) decay is very slow for the degradable organic principle in the discarded object.If condition is constant, CH ₄Generation rate depends on the carbon content of discarded object fully.Therefore in the initial several years after deposition, the CH of the generation of waste materials that deposits at disposal site ₄Discharge capacity is the highest, and along with degradable organic carbon in the discarded object is consumed by bacterium (causing decay), this discharge capacity also descends gradually.This shows; Referring to Fig. 1; The production process of methane is main relevant with half life period of content and degraded of degradable organic carbon in the rubbish, and the half life period mainly receives rubbish composition, landfill condition and meteorological condition effect, and the half life period can be confirmed through the gas production rate of monitoring in the unit interval.

101: gather the monitoring sample respectively from 6 types of different rubbish sources that produce, obtain the content of organic carbon, and with the content typing host computer workstation of organic carbon as parameter;

Wherein, this step is specially: the monitoring sample should be gathered respectively from 6 types of different rubbish source that produces, and these sampled points comprise shopping centre, resident living area, cause district, sweeping area, special section and mixed zone.With the fritter of bulk refuse breaking to particle diameter less than 50mm, fully mixed stirring that pave in the cement flooring uses inquartation division 2 (or 3) inferior to the 25-50kg sample again, places closed container to transport to and analyzes the place behind the mensuration rubbish unit weight.The determination and analysis method of monitoring sample carbon content adopts the outer heating in the potassium bichromate titrimetric method.(oil bath temperature is 180 ℃ under the condition of heating outside; Seethed with excitement 5 minutes); With organic carbon in certain density potassium dichromate-sulfuric acid solution oxidation sample, remaining potassium dichromate comes titration with ferrous sulphate, from the potassium dichromate amount that is consumed; Calculate the content of organic carbon, the content of its organic carbon is entered into the host computer workstation as parameter.

102: when in the landfill operation stage and when not having the methane collection system, be the unit, realize the landfill of rubbish, adopt the static chamber method that methane content is monitored, gather sequential control system through methane gas analyser three locations and obtain first methane content with the step;

Wherein, this step is specially: landfill operation is the unit with the step, per 1 about 12.5m of bench height; Divide two-layer landfill, per 1 layer height is 6.0m, the about 30cm of middle earthing bed thickness.Promptly carry out end behind the landfill of 1 step of completion and cover the about 1m of overburden layer thickness, grade of side slope 1: 3.Carry out the methane content monitoring with the static chamber method, sample tap and temperature-measuring port are established in the static chamber top, and fixed part is embedded in the overburden layer, during test static case lid are inserted in the water sealed tank water filling sealing.Respectively 0,10,20,30 and 40min take a sample from the gas sample mouth; Static the temperature inside the box is write down in sampling simultaneously, with correcting gas concentration.The volume fraction of methane is tested with gas chromatographic analysis in the gas appearance.

103: when in the closing stage and when not having the methane collection system; Before bleeding, measure the natural pressure and the methane content initial value of the landfill gas of all experiment wells; The gas collection well is bled and measured bleed negative pressure and landfill gas composition, and the pressure in monitor well monitoring landfill gas changes with composition simultaneously, and setting pressure is popped one's head in; Confirm the coverage of bleeding, methane gas analyzer three ground are gathered sequential control system and are obtained second methane content based on pressure and composition;

The experimental method of taking to bleed is measured; The experiment of bleeding is divided into static experiment and two stages of dynamic experiment; Static experimentation comprises: the natural pressure of before bleeding, measuring the landfill gas of all experiment wells; Dynamic experiment is employed in the gas collection well and bleeds and measure bleed negative pressure and landfill gas composition, simultaneously at the pressure and composition variation of monitor well monitoring landfill gas.Experiment comprises three parts: maximum extraction flow and the suction pressure of first for when many mouthfuls of gas collection wells are bled simultaneously, measuring; Second portion is the maximum extraction flow and the suction pressure of the independent test set gas well of difference; The static pressure of each well of monitoring before third part is tested for beginning in every day to bleed.The gas flow of gas collection well and suction pressure are linear basically, and the size of its ratio is relevant with landfill thickness with the landfill time of location rubbish, simultaneously, through the setting pressure probe, confirm the coverage of bleeding.

104: when the methane collection system, the utilization flue gas analyzer is monitored collecting the well methane concentration, gathers sequential control system through methane gas analyser three locations and obtains leucoaurin content;

Wherein, this step is specially: the utilization flue gas analyzer is monitored collecting the well methane concentration.Collecting cross section, well exit increase test sample device section, from test sample device section lower end and the junction air inlet of collecting well, giving vent to anger and import collection tube etc. in the upper end, and in the side test sample mouth and temperature mouth is set.It is that example describes that flue gas analyzer in the embodiment of the invention adopts moral figure testo350pro flue gas analyzer, and when specifically realizing, the embodiment of the invention does not limit this.Flue gas probe and temp probe (K type) model size design in conjunction with moral figure testo350pro flue gas analyzer can closed test sample mouth and temperature mouths.During measurement the testo350Pro flue gas analyzer is connected with dynamic case, directly carries out field monitoring, convenient and swift, the error of avoiding sample collecting, transportation to bring.Moral figure testo350Pro is furnished with various flow sensors, can measure the Gas Parameters of all gases, can measure 6 kinds of parameters simultaneously at most.Also can measure differential pressure, calculate flue gas flow rate/flow, and all gases flue gas annual emissions.The long 700mm of flue gas probe of standard configuration, 500 ℃ of heatproofs.Monitoring gained data can be transmitted through data-interface.

Flow sensor disposes as follows: the flow sensor in the embodiment of the invention adopts the imported with original packaging intelligent vortex shedding flowmeter; Be total to quadruplet; Gauge outfit has liquid crystal display instantaneous delivery and integrated flow, and instantaneous delivery is pressed range output 4-20MA current signal and given flow totalizer meter, precision 0.5%.

Wherein, the methane gas analyser three locations in the embodiment of the invention are gathered sequential control system and can be realized a cover gas analyzer collection three locations gas CH ₄Concentration, the cost of reducing investment outlay, this system adopts Siemens S7 series of PLC to control the CH of the house steward of its collection, power generation pipeline, torch pipeline ₄Concentration signal is realized continuous coverage, the wherein CH of power generation pipeline through the sequential control (set point or reference input signal be table execution control on schedule automatically) to the zero-pressure solenoid valve ₄Concentration signal is exported to genset through signal sub power distribution orchestration and is used for unit control.

Flow totalizer meter adopts imported with original packaging WP series integrating instrument, but its collecting temperature, and pressure and flow signal, instantaneous delivery and integrated flow are through the mark condition flow behind the temperature pressure compensation.

Wherein, The execution sequence of step 102 to step 104 is to select to carry out according to the actual conditions of refuse landfill; Optional step 102 in the refuse landfill landfill process of no methane collection system; The back optional step 103 of closing, and in the refuse landfill that the methane collection system is arranged omnidistance optional step 104.

105: first methane content, second methane content or leucoaurin content are sent to the host computer workstation through data service center, obtain the gas production rate of unit weight rubbish in the unit interval through the host computer workstation;

Wherein, this step is specially: the rubbish total amount by producing detected gas can calculate the gas production rate of unit weight rubbish in the unit interval through the host computer workstation, and the gas production rate in this unit interval is used to imitate the value of nuclear garbage degradation half life period.

106: adopt the single order evanescent mode, obtain the discharge capacity of methane according to content, first methane content, second methane content and the leucoaurin content of organic carbon;

Adopt single order decay (FOD) pattern; And combine reality that the Monitoring Data and the correlative study achievement of methane gas and waste component are revised its default parameter; Bring forward parameters of choice principle under the different condition, the method for specifically calculating the discharge of methane amount is:

CH ₄Calculating:

E _CH4＝DDOC _mdecompT×F×16/12 (1)

In the formula (1): E _CH4CH for T landfill municipal solid wastes ₄Discharge capacity, unit is a ton; DDOC _MdecopTDDOC for the T decomposition _m, its computing method are face formula (2), (3) and (4) as follows; F is the CH in the garbage loading embeading gas that produces ₄Ratio is confirmed in conjunction with investigation and actual monitoring data; 16/12 is CH ₄/ C molecular weight ratio.

In the first kernel response, result quantities is proportional with reaction material quantity all the time.Waste material is deposited on the time and the annual CH that produces that solid waste is handled the place ₄Amount is irrelevant, only with the decomposing material gross mass in the place was relevant at that time.Handle the quantity of decomposing material in the place if know initial time solid waste; Then each year all can be considered 1 year in the evaluation method; The completion that basic single order calculates can be adopted this two simple formula, and the decay reaction starts from depositing the January 1 of that year afterwards.

T solid waste at the year end is handled the DDOC of place accumulation _m:

DDOC _maT＝DDOC _mdT+(DDOC _maT-1×e ^-k) (2)

The DDOC that T decomposes _m:

DDOC _mdecompT＝DDOC _maT-1×(1-e ^-k) (3)

In formula (2) and (3): T is the inventory time; DDOC _MaTHandle the DDOC of place accumulation for T solid waste at the year end _m, unit is a ton; DDOC _MaT-1DDOC for (T-1) terminal hour solid waste processing every year place accumulation _m, unit is a ton; DDOC _MdTFor T deposits to the DDOC that solid waste is handled the place _m, multiplying each other and can obtain with the content of monitoring the degradable organic carbon that obtains and the rubbish total amount of T landfill, unit is a ton; K is reaction constant, k=ln (2)/t _1/2, unit is year, t _1/2Be time half life period, wherein, time half life period is confirmed according to the gas production rate of unit weight rubbish in the unit interval.

In the single order evanescent mode, the half life period of garbage degradation is the key parameter that influences landfill gas change of production trend, and the span that pattern is recommended is 5～10 years (a represents year), can be according to the CH of experimental monitoring gained ₄Gas yield is checked the concrete numerical value that the garbage degradation half life period should get.

107: the content according to organic carbon obtains CO ₂And N ₂The discharge capacity of O;

CO in the waste incineration ₂Calculating:

$E_{{\mathrm{CO}}_2}=\mathrm{MSW}\×\underset{j}{\mathrm{\Σ}}({\mathrm{WF}}_j\×{\mathrm{dm}}_j\×{\mathrm{CF}}_j\×{\mathrm{FCF}}_j\×{\mathrm{OF}}_j)\×44/12---\left(4\right)$

In the formula (4): For burning the CO of municipal solid wastes ₂Discharge capacity, unit is a ton; WF _jBe the number percent of ingredient j in the solid waste, obtain according to the data of investigating and survey; Dm _jBe the dry matter percentage in the ingredient j; CF _jRatio for total carbon in the dry of ingredient j; FCF _jBe the ratio (total carbon remove degradable organic carbon DOC) of mineral carbon in total carbon; OF _jBe oxidation factor, get 100%; 44/12 is CO ₂/ C molecular weight ratio.

N in the waste incineration ₂The calculating of O:

$E_{N_{2}O}=\mathrm{MSW}\×{\mathrm{EF}}_{N_{2}O}\×{10}^{-6}\×{\mathrm{GWP}}_{N_{2}O}---\left(5\right)$

In the formula (5):

For burning municipal solid wastes discharging N ₂The CO2 emission equivalent that O produces, unit are ton; The municipal solid wastes quality of MSW for burning, unit is a ton;

Be N ₂The emission factor of O is got IPCC default value 50gN ₂O/ ton municipal solid wastes; GWP _N2OBe N ₂Greenhouse effect and CO that O produces ₂The multiple of comparing gets 310.

108: the host computer workstation is to discharge capacity, the CO of methane ₂And N ₂The discharge capacity of O is handled, and obtains data and curves figure.

Wherein, on data and curves figure, can directly find out discharge capacity, the CO of methane ₂And N ₂The discharge capacity of O has made things convenient for the multiple needs in the practical application.

Wherein, in order to access the CO of garbage disposal Life cycle ₂Discharge capacity, the embodiment of the invention also comprises the indirect discharge capacity of upstream and downstream.

The upper reaches comprise: upper reaches activity level and emission factor multiply each other and obtain CO ₂Discharge capacity.Wherein, activity level is specially: the energy-output ratio and the power consumption that are consumed in the transportation rubbish process.Adopt the default value and the regional electrical network datum line emission factor of the fossil energy greenhouse gas emission factor that IPCC provides, activity level and emission factor are multiplied each other obtains the CO in this stage ₂Discharge capacity.

Downstream comprise: from output electric weight on to CO ₂CER monitor, the output electric energy has reduced the carbon emission amount of common generating, the CO that has offset the part in the garbage disposal ₂Discharge capacity.Be specially: the electric weight of externally exporting after the domestic rubbish disposal is multiplied by the CO of local generating ₂The average emission coefficient.The CO of local generating ₂The average emission coefficient is the datum line emission factor, should be electric weight limit emission factor (EF _{Grid, OM, y}) and capacity limit emission factor (EF _{Grid, BM, y}) weighted mean, claim combination marginal CM again, weight wOM and wBM default value are 50%.For example: Tianjin is positioned at the North China, adopts North China regional power grid data.In sum, the embodiment of the invention is through monitoring methane gas and waste component, to the CH in component of refuse, degradable organic carbon content, the garbage loading embeading gas ₄Ratio and half life period etc. revise, and bring forward the selection principle of above-mentioned parameter under the different condition, field instrument and host computer workstation are got in touch, but the real-time update data; The embodiment of the invention has reduced the cost of monitoring, and monitoring result is stable and accuracy that adjust is higher.

It will be appreciated by those skilled in the art that accompanying drawing is the synoptic diagram of a preferred embodiment, the invention described above embodiment sequence number is not represented the quality of embodiment just to description.

The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (5)

1. an application of city life garbage disposal system greenhouse gas emission monitoring method is characterized in that, said method comprising the steps of:

(1) gather the monitoring sample respectively from 6 types of different rubbish sources that produce, obtain the content of organic carbon, and with the content typing host computer workstation of organic carbon as parameter;

(2) when in the landfill operation stage and when not having the methane collection system, be the unit, realize the landfill of rubbish, adopt the static chamber method that methane content is monitored, gather sequential control system through methane gas analyser three locations and obtain first methane content with the step;

(3) when in the closing stage and when not having said methane collection system; Before bleeding, measure the natural pressure and the methane content initial value of the landfill gas of all experiment wells; The gas collection well is bled and measured bleed negative pressure and landfill gas composition, and the pressure in monitor well monitoring landfill gas changes with composition simultaneously, and setting pressure is popped one's head in; Confirm the coverage of bleeding, said methane gas analyzer three ground are gathered sequential control system and are obtained second methane content based on pressure and composition;

(4) when said methane collection system, the utilization flue gas analyzer is monitored collecting the well methane concentration, gathers sequential control system through said methane gas analyser three locations and obtains leucoaurin content;

(5) said first methane content, said second methane content or said leucoaurin content are sent to said host computer workstation through data service center, obtain the gas production rate of unit weight rubbish in the unit interval through said host computer workstation;

(6) adopt the single order evanescent mode, obtain the discharge capacity of methane according to the content of said organic carbon, said first methane content, said second methane content and said leucoaurin content;

(7) content according to said organic carbon obtains CO ₂And N ₂The discharge capacity of O;

(8) said host computer workstation is to the discharge capacity of said methane, said CO ₂And N ₂The discharge capacity of O is handled, and obtains data and curves figure;

Wherein, optional step (2) in the refuse landfill landfill process of no said methane collection system, the back optional step (3) of closing, and in the refuse landfill that said methane collection system is arranged omnidistance optional step (4).

2. a kind of application of city life garbage disposal system greenhouse gas emission monitoring method according to claim 1 is characterized in that the discharge capacity of said methane is specially:

Adopt the single order evanescent mode, the discharge capacity of said methane:

E _CH4＝DDOC _mdecompT×F×16/12

E _CH4CH for T landfill municipal solid wastes ₄Discharge capacity, unit is a ton; DDOC _MdecopTDDOC for the T decomposition _mF is the CH in the garbage loading embeading gas that produces ₄Ratio; 16/12 is CH ₄/ C molecular weight ratio;

T solid waste at the year end is handled the DDOC of place accumulation _m:

DDOC _maT＝DDOC _mdT+(DDOC _maT-1×e ^-k)

The DDOC that T decomposes _m:

DDOC _mdecompT＝DDOC _maT-1×(1-e ^-k)

T is the inventory time; DDOC _MaTUnit is a ton; DDOC _MaT-1Handle the DDOC of place accumulation for T-1 terminal hour solid waste _m, unit is a ton; DDOC _MdTFor T deposits to the DDOC that solid waste is handled the place _m, unit is a ton; K is reaction constant, k=ln (2)/t _1/2, unit is year, t _1/2Be time half life period, wherein, said time half life period is confirmed according to the gas production rate of said unit weight rubbish in the unit interval.

3. a kind of application of city life garbage disposal system greenhouse gas emission monitoring method according to claim 1 is characterized in that said CO ₂Discharge capacity:

$E_{{\mathrm{CO}}_2}=\mathrm{MSW}\×\underset{j}{\mathrm{\Σ}}({\mathrm{WF}}_j\×{\mathrm{dm}}_j\×{\mathrm{CF}}_j\×{\mathrm{FCF}}_j\×{\mathrm{OF}}_j)\×44/12$

For burning the CO of municipal solid wastes ₂Discharge capacity, unit is a ton; WF _jNumber percent for ingredient j in the solid waste; Dm _jBe the dry matter percentage in the ingredient j; CF _jRatio for total carbon in the dry of ingredient j; FCF _jBe the ratio of mineral carbon in total carbon; OF _jBe oxidation factor, get 100%; 44/12 is CO ₂/ C molecular weight ratio.

4. a kind of application of city life garbage disposal system greenhouse gas emission monitoring method according to claim 1 is characterized in that said N ₂The discharge capacity of O:

$E_{N_{2}O}=\mathrm{MSW}\×{\mathrm{EF}}_{N_{2}O}\×{10}^{-6}\×{\mathrm{GWP}}_{N_{2}O}$

For burning municipal solid wastes discharging N ₂The CO2 emission equivalent that O produces, unit are ton; The municipal solid wastes quality of MSW for burning, unit is a ton;

Be N ₂The emission factor of O; GWP _N2OBe N ₂Greenhouse effect and CO that O produces ₂The multiple of comparing gets 310.

5. a kind of application of city life garbage disposal system greenhouse gas emission monitoring method according to claim 1, it is characterized in that said method also comprises: the indirect discharge capacity to upstream and downstream is monitored,

The indirect discharge capacity at the upper reaches comprises: upper reaches activity level and emission factor multiply each other and obtain CO ₂Discharge capacity; Wherein, said activity level is specially: the energy-output ratio and the power consumption that are consumed in the transportation rubbish process;

The indirect discharge capacity in downstream comprises: from output electric weight on to CO ₂CER monitor, be specially: after the domestic rubbish disposal externally the electric weight of output be multiplied by the CO of local generating ₂The average emission coefficient, the CO of said local generating ₂The average emission coefficient is the datum line emission factor, is the weighted mean of electric weight limit emission factor and capacity limit emission factor.

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