CN104874598A - Land reuse processing method of refuse landfill - Google Patents
Land reuse processing method of refuse landfill Download PDFInfo
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- CN104874598A CN104874598A CN201510337161.4A CN201510337161A CN104874598A CN 104874598 A CN104874598 A CN 104874598A CN 201510337161 A CN201510337161 A CN 201510337161A CN 104874598 A CN104874598 A CN 104874598A
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Abstract
The invention discloses a land reuse processing method of a refuse landfill. The land reuse processing method of the refuse landfill comprises the steps of re-excavating, cleaning and treating the whole landfill, sorting humus soil, combustibles, recoverable substances, unrecoverable inorganic substances and dangerous and waste substances, transporting the humus soil to a soil treatment and desert treatment place, packaging and transporting the combustibles to a waste incineration power plant for incineration power generation, conducting harmless treatment and recovery on the recoverable substances, backfilling the unrecoverable inorganic substances in place, transporting the dangerous and waste substances to a dangerous and waste center and obtaining harmless land. The land reuse processing method has the advantages that the substances in the refuse landfill are re-smashed and sorted at a time, treatment scale, namely daily treatment tonnage can be ensured. After the landfill is treated and reused, a large amount of humus soil (nutritional soil) is obtained and can be used for planting woods, the woods absorb carbon dioxide and release oxygen, and atmospheric pollution and haze situation are improved. Land resources are reutilized, the arable land minimum in our country is guaranteed, and the land reuse processing method has immeasurable strategic significance.
Description
Technical field
The present invention relates to a kind of administering method of refuse landfill, particularly relate to the processing method of one way of life refuse landfill land reclamation.
Background technology
The refuse disposal method that Present Domestic extensively adopts mainly contains sanitary landfills, burning, compost.China from the later stage eighties 20th century just set up the refuse landfill of specification, these landfill yards have had very large improvement compared with initial storeyard (informal landfill yard), and the pollution in the design for percolate and landfill gas takes corresponding control measure; In construction management, carry out Zoning landfill, compaction in layers, regular earthing etc.Because sanitary landfill method treating capacity is large, strong adaptability, disposable process, do not have residue, convenient management and operating cost is reasonable, therefore it has become the Main Means of China's municipal solid wastes process.Pin and build portion's data, by 2011, China had the house refuse of 73% to adopt landfill disposal.
But, along with the urbanization of China is in progress, early stage existing MSW landfill (closed or by closing landfill yard) and some informal landfill yards of being positioned at suburbs in the past progressively conjugate at present in main city zone, meanwhile, the development progressively along with city is also reached design storage capacity and is progressively transitioned into urban district by existing sanitary filling field.
For Beijing, according to incompletely statistics, about there are nearly thousand informal landfill in Beijing, takes up an area about 20,000 mu, is mainly distributed in other 14 districts outside the district of city four, meanwhile, and the sanitary filling field during Beijing has 16 to run at present.These landfill yards take up an area the gross area and are about 5225 mu, but, along with the sharp increase of population, these landfill yards can not meet the demand in city far away, such as: Pekinese first modernization garbage sanitary filling field all can have the rubbish more than 900 tons to ship to carry out sanitary landfills every day.Built up till now from 1997, at lasting landfill after 15 years, Bei Shenshu does not again hold more rubbish, the garbage mountain after closing is almost equivalent to Jingshan mountain more than two.Beijing has 8 bulky refuse treatment facilities to be in overload operation state, and the highest rate of load condensate reaches 246%.Comprise north god tree, the whole city has 7 garbage sanitary filling fields will fill up closing within the time of 2 to 3 years.
Accordingly, Beijing need continue the new sanitary filling field of continuous construction to meet the needs of urban development.
But landfill yard a series of environment long-term risk problem can not be ignored.Sanitary landfills is often higher to the requirement of addressing, is generally difficult to the site finding each side condition all to meet.Meanwhile, landfill also also exists many environmental problems.Containing a large amount of organic matters in house refuse, after landfill, organic decomposition (and with moisture that rubbish brings) can produce percolate.Anaerobic fermentation process can produce greenhouse effects methane gas.Percolate has the character of high concentration, complicated component, extremely difficult.Containing various heavy in percolate, if toxic metals quarantine measures particularly are wherein improper, can underground be penetrated into, affect underground water source, produce the secondary pollution to periphery.In addition, garbage loading embeading per ton about produces 40-100kg methane gas, the methane gas of unit formula, greenhouse gases effect is 25 times of carbon dioxide, accordingly, developed country, to sanitary landfills, emphasizes to burn the multiple means such as decrement by categorized consumer waste recovery, recycling treatment, classification, reduce the house refuse amount, particularly organic quality that enter sanitary filling field.
Life people in the environment, with air, water, soil for medium, directly can take in human body by respiratory tract, alimentary canal or skin by the harmful waste in environment, people is caused a disease.Discarded objects of some artificial backfills are buried in underground, some of them isolation imperfection, if directly contacted with underground water after water level rises, will cause the pollution of underground water.Landfill yard also very easily causes environmental risk accident, and e.g., fluid seepage, blow-up causes a lot of accident, and release of toxic gas etc. cause personnel's property loss.
What landfill went round and began again take can plough land used in a large number, and these landfill yards are one to waste greatly, particularly in plains region to land resource.
Summary of the invention
Technical problem to be solved by this invention is, providing a kind of is administer for the higher household refuse landfill sites of City Land Price or informal landfill yard, finally reaches the object of the land reclamation of landfill yard.
The technical solution adopted in the present invention is: a kind of land reclamation processing method of refuse landfill, comprises the following steps,
A. whole landfill yard is again excavated, clears up, processes;
B. sort out peat, combustible, recyclable materials, inorganic substances can not be returned, danger refuse matter;
C. the place that peat is transported to soil treatment, desert is controlled;
D. combustible packing is transported to garbage incinerating power plant for burning electricity generation;
E. reclaim after recyclable materials harmless treatment;
F. not recyclable inorganic substances landfill on the spot;
G. waste of endangering delivers to Wei Fei center;
H. innoxious soil is obtained.
First large excavator is utilized to be separated with large-scale ribbon the armored concrete in described above-mentioned steps landfill yard, large-scale weaving block;
After being separated armored concrete, large-scale weaving block and large-scale ribbon in landfill yard, disposable all house refuses are all sent into cutter fragmentation;
When mass concrete, large-scale weaving block and large-scale ribbon, disposable all excavations house refuse out is all sent into cutter fragmentation, consider treatment process more later;
Material after fragmentation is sieved to first order roller machine by conveyer belt and distributing device cloth;
The oversize of first order roller machine screening sends into the first winnowing machine sorting, selection by winnowing be categorized as brick/watt/stone and combustible; Wherein, after combustible packing, send garbage burning factory process, brick/watt/stone etc. backfills on the spot;
The screenings of first order roller machine screening is sieved to the second level, containing the roller machine of multiple-roll structure by conveyer belt;
The screenings of the <20mm that the roller machine of second level multiple-roll structure sieves out makes the fertile soil for soil remediation after magnetic separation;
The oversize of the roller machine screening of second level multiple-roll structure sends into the second winnowing machine sorting;
Second pneumatic separator screenings is after magnetic separation, the process of Recyclable sorting operation, and surplus materials is can the harmless inorganic substances of landfill on the spot, landfill on the spot;
Second pneumatic separator oversize is after artificial separation, building materials and Recyclable sorting, and being packaged as can for the combustible of waste incineration station-service.
Described recyclable materials genus, structural glass, bulk plastic, fritter electronic product block covered with gold leaf etc.; Not recyclable materials comprise brick, watt, rubble, glass is broken etc.
The invention has the beneficial effects as follows: sort after the material in landfill yard again fragmentation again due to disposable, the scale this day process tonnage number of process can be ensured.The landfill yard of certain scale is at present along with the development of urbanization is all positioned at city, must reduce to greatest extent work for the treatment of day and project on the impact of surrounding enviroment, reach the object that landfill yard is multiplexing simultaneously, and small-sized, small-scale day process, this purpose can not be reached on practical significance.Such as, take up an area 100 mu for one, average landfill depth is the landfill yard of 5 meters, if process 50 tons day, needs just can be disposed for 15 years.This operation for a long time, one is to solve the multiplexing object of landfill yard; Two is the fast developments due to urbanization, and city (particularly a line city) urban spraw and population are all sharply expanded, and landfill yard that is existing or that closed all is positioned at densely populated area.Carrying out in so densely populated area the landfill yard multiplexing process reaching 15 years, by producing because operation process is on the long-term impact of surrounding enviroment and the serious problems that disturb residents for a long time, is completely worthless.In addition, adopt accumulation that is a large amount of, small scale equipment not possess operability to reach treatment scale, need the disposal ability of unit equipment volume, floor space to be maximum.Only have to adopt and disposablely to sort after the material in landfill yard again fragmentation again, could ensure that the scale of process processes tonnage number within the next few days.Some is engaged in the enterprise with the sector, because nothing states particular design, manufacture, can ensure continuously process 400 tons/time, can can ensure no matter be metal in material and design again, plastics, rubber or bulk wooden can be easily broken equipment, therefore proposition process program is first by whole for the house refuse excavated, directly be delivered to cylinder round sifter, the plastics of screening bulk out, rubber, woodenly be delivered to large part disintegrating machine (to reduce the tonnage number that need pulverize per hour) again, if the ability that its device processes ability and support equipment are runed continuously is done a Balancing Analysis of Charges by us, will find that this is infeasible.
Adopt this processing scheme, successful key point is the disintegrating apparatus of front end, this equipment need ensure: employing giant excavator and mini-excavator supporting, by the large-scale reinforced concrete block of plant equipment process relative difficulty and stone, large-scale yarn fabric, after the ribbon material not easily sheared separates from house refuse, disintegrating apparatus can by disposable for remaining house refuse feeding specially for the shearing of landfill yard house refuse and the main equipment designed all pulverize, equipment need ensure no matter in house refuse containing metal, plastics, rubber or bulk wooden, can easily be crushed to the 250mm specified.Equipment Machine Design must be perfect.About the design of equipment, will describe in another patent.
Social effect of the present invention is remarkable: by landfill yard process, multiplexing after, one is obtain a large amount of fertile soil (Nutrition Soil), and peat can plant forest, forest absorbing carbon dioxide, releasing oxygen, and atmosphere pollution and the pollution of haze situation can improve; Two is that land resource is reused, and to the arable land red line ensureing China, has immeasurable strategic importance.
Accompanying drawing explanation
Fig. 1 is landfill yard multiplexing process process chart.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Landfill yard land reclamation of the present invention is that whole landfill yard is again excavated, clears up, processed, Recyclable reclaims, harmless treatment is as desert treatment greening soil in addition for organic matter, and combustible send garbage incinerating power plant nearby, harmless inorganic building material local use, landfill after packing.Soil after cleaning develops again.
The land reclamation method of a kind of refuse landfill of the present invention, comprises the following steps,
A. whole landfill yard is again excavated, clears up, processes;
B. sort out peat, combustible, recyclable materials, inorganic substances can not be returned, danger refuse matter;
C. the place that peat is transported to soil treatment, desert is controlled;
D. combustible packing is transported to garbage incinerating power plant for burning electricity generation;
E. reclaim after recyclable materials harmless treatment;
F. not recyclable inorganic substances landfill on the spot;
G. waste of endangering delivers to Wei Fei center;
H. innoxious soil is obtained.
Large excavator is utilized to be separated with large-scale ribbon the armored concrete in described above-mentioned steps landfill yard, large-scale weaving block;
By broken for disposable to mass concrete, large-scale weaving block and large-scale ribbon whole feeding cutter;
Material after fragmentation is sieved to first order roller machine by conveyer belt and distributing device cloth;
The oversize of first order roller machine screening sends into the first winnowing machine sorting, selection by winnowing be categorized as brick/watt/stone and combustible; Wherein, after combustible packing, send garbage burning factory process, brick/watt/stone etc. backfills on the spot;
The screenings of first order roller machine screening is sieved by the roller machine of conveyer belt to second level multiple-roll structure;
The screenings of the <20mm that the roller machine of second level multiple-roll structure sieves out makes the fertile soil for soil remediation after magnetic separation,
The oversize of the roller machine screening of second level multiple-roll structure sends into the second winnowing machine sorting,
Second pneumatic separator screenings is after magnetic separation, the process of Recyclable sorting operation, and surplus materials is can the harmless inorganic substances of landfill on the spot, landfill on the spot;
Described recyclable materials genus, structural glass, bulk plastic, fritter electronic product block covered with gold leaf etc.; Not recyclable materials comprise brick, watt, rubble, glass is broken etc.
On one piece of smooth plot that the interim stockyard of rubbish needed for operation, sieving garbage system layout clean out by landfill yard land reclamation needs of the present invention in soot.Building rubbish upside-down mounting place near smooth plot, soot, repair temporary road inside, the product of operation process is transported outward by temporary road.Digging operation will with bull-dozer and excavator supporting.At the initial stage, within the scope of workbench periphery 100m, available bull-dozer from top to bottom, refuse disposal material pushes to the operating point of falling excavator along inclined-plane by layering from high to low.Preresearch estimates, the rubbish near the region about 1/3rd of separation system and disposal amount all can be completed by bull-dozer.After zone line and longer-distance house refuse need adopt excavator excavation, fragmentation, then be delivered to separation system by movable belt conveyor.
Embodiment, as shown in Figure 1, at tap point, adopts giant excavator and mini-excavator supporting, is first separated from house refuse by some materials of plant equipment process relative difficulty.These materials comprise: large-scale reinforced concrete block and stone, large-scale yarn fabric, the ribbon not easily sheared, etc., and classification process.Afterwards, house refuse forklift is sent into and is all pulverized for the main equipment of the shear design of landfill yard house refuse specially, and the material maximum gauge after pulverizing controls be no more than 250mm, and the material after pulverizing directly forms the stockpile of separation system when day output.
It is the sorting of 150mm cylinder round sifter that stockpile house refuse sieves aperture through belt transport and distributing device to the first group.By the control in cylinder aperture, the oversize (>150mm) that first series cylinder screening machine sub-elects, main component is larger material, winnowing machine sorting sent into by this material, selection by winnowing be categorized as brick/watt/stone and combustible (comprise yarn fabric, plastics, complete wooden material etc. of not degrading) two class materials.Wherein, after combustible packing, send garbage burning factory process, brick/watt/stone etc. can backfill use on the spot.
The screenings (<150mm) of the first series cylinder screening machine, the screening machine sorting that second group contains multiple cylinder, each cylinder has different pore size is transferred to by transport tape, screenings (<20mm), after the aided processes such as magnetic separation, makes the fertile soil (Nutrition Soil) for soil remediation that granularity is less than below 20mm.
This Nutrition Soil, depending on the characteristic of various places life, the content of organic matter can at 40-80%, and nutritional labeling (N+P2O5+KO), about about 3.5-3.8, can be used for turf production, soil remediation, the work such as afforestation.
Second group has the oversize (>20mm) after the cylinder round sifter sorting of different pore size containing multiple cylinder, each cylinder, is equipped with the second typhoon optional equipment sorting by this stage material characteristic design.Pneumatic separator screenings, after being equipped with the operation process such as magnetic separation, other Recyclable sortings, become granularity more than 20mm, below 150mm rubble/brick/watt and the broken mixture of glass, can be used for backfilling on the spot.Pneumatic separator oversize, after being equipped with building materials (on a small quantity) artificial separation, Recyclable sorting, being packaged as can for the combustible of waste incineration station-service.
The multiplexing handling project of this landfill yard, will produce following products:
Fertile soil (Nutrition Soil)
Combustible
Recyclable
Not recyclable brick/watt/stone etc.
A small amount of danger waste (as battery etc.).
Recyclable is disposed
Recyclable comprises metal, plastics etc., can take out.
According in grind " 2014-2018 China garbage disposal industry market on-site investigation and investment tactics consultation report " of Pu Huafabu, the first half of the year in 2014, China's waste resource and waste and scrap reclaim processing industry asset size and reach 1563.73 hundred million yuan, increase by 25.4% on a year-on-year basis, waste resource and waste and scrap reclaim processing industry marketing scale and reach 3948.42 hundred million yuan, increase by 24.7% on a year-on-year basis, waste resource and waste and scrap reclaim processing industry total profit 447.38 hundred million yuan.Although in the house refuse that landfill yard is excavated, Recyclable amount is few, and the outlet channel of these Recyclables is unimpeded.
Not recyclable brick/watt/disposal such as stone
Expendable brick/watt/stone etc., landfill yard landfill on the spot after the cleaning can be considered.According to the feature of life in China refuse landfill, our primary Calculation is: take up an area 100 mu for one, the household refuse landfill sites of average landfill thickness 5 meters, expendable brick/watt/total amount such as stone is about 3.5 ten thousand tons, and landfill does not affect the use in soil on the spot.
The disposal of danger waste-battery
After danger waste (being mainly battery) need be collected by specification, the Wei Fei center being transported to qualification is disposed.
The disposal of fertile soil (Nutrition Soil)
Adopt the program, the method for disposal producing a large amount of peats is comprised the Nutrition Soil doing fertilizer or greening.Consider by the landfill yard house refuse component of China, take up an area 100 mu for one, the household refuse landfill sites of average landfill thickness 5 meters, the peat (Nutrition Soil) that this disposal method will produce nearly 340,000 tons.The fertile soil amount of enormous amount like this, one is the potential pollution problem will considering that peat (Nutrition Soil) is multiplexing, and two is to adopt non-fertilizer method to process.
We acquire survey data at the potential pollution problem multiplexing to landfill yard peat (Nutrition Soil).Be respectively: the waste vegetable leaves that certain vegetable distribution centers produces, the mud that certain sewage treatment plants produces, the house refuse of certain household refuse landfill sites sampling is organic, the house refuse organic matter of this household refuse landfill sites sampling is simulated in laboratory conditions and is carried out the peat (Nutrition Soil) after sorting again by this disposal method, and analysis result sees the following form (table 1):
As can be seen from Table 1, the nutritional labeling (expressing with N+P2O5+KO) of waste vegetable leaves can up to 18.1%, and content of beary metal does not detect substantially.
The mud of sewage treatment plants, nutritional labeling (expressing with N+P2O5+KO) is though also up to 8.8%, but total lead content is also up to 672mg/kg, non-serviceable (as reference contrast, the total lead content in Ministry of Agriculture NY525 fertilizer standard requires as being no more than 50mg/kg).
The analysis of the multiplexing peat of table 1. landfill yard (Nutrition Soil) potential pollution contrasts.
The house refuse that the sampling of this household refuse landfill sites produces is organic, though nutritional labeling (expressing with N+P2O5+KO) is lower, be only 3.3%, every heavy metal index is also in the scope that Ministry of Agriculture NY525 fertilizer standard specifies.
The peat (Nutrition Soil) that the house refuse organic matter produced with the sampling of this household refuse landfill sites produces after simulating in laboratory conditions and carrying out sorting by this disposal method, nutritional labeling (expressing with N+P2O5+KO) is 3.4%, and every heavy metal index is also all in the scope that Ministry of Agriculture NY525 fertilizer standard specifies.Like this, adopt the peat (Nutrition Soil) that this PROCESS FOR TREATMENT household refuse landfill sites produces, if landfill yard is positioned at Soil Background content of beary metal lower ground (wide, plains region of namely going up north, district, mining area, non-mountain area), there is certain nutritional labeling, can be used for soil remediation and secondary pollution problem can not be brought.
Consider by the landfill yard house refuse component of China, take up an area 100 mu for one, the household refuse landfill sites of average landfill thickness 5 meters, the peat (Nutrition Soil) that this disposal method will produce nearly 340,000 tons.The fertile soil amount of enormous amount like this, the disposal method that we analyze rear suggestion is two kinds:
1) introduce the grass with freeze proof, Drought-tolerant gene and herbaceous plant, the fertile soil small part that project produces can be used for producing the lawn for urban afforestation, improves the scene that city a slice in winter is withered and yellow.There is several functions urban green space, from purifying air, and 10 hours adsorbable carbon dioxide in the meadow of 100 square metres 1500 grams, releasing oxygen 100 grams; From noise control, compared with cement flooring, it can reduce noise about 20 decibels;
2) all the other most of fertile soil are transported to the ecological region planting herbaceous plant of administering in the urgent need to desertification of land, the effect of root system of plant is utilized to prevent Nutrition Soil to run off, plant drought-enduring, relatively less to underground water demand seeds in region, lawn by planning, the desertification treatment of spreading area is to regulate local climate environment simultaneously.By one take up an area 100 mu, the average landfill depth of house refuse is consider based on the landfill yard of 5 meters, adopt above-mentioned technique and scheme, if fill out Nutrition Soil by 30 cm thick pavings, at least can transform soil, plantation forest 3400 mu.According to can data query, the adsorbable carbon dioxide of these forests 5.1 ten thousand tons/year, releasing oxygen 4.5 ten thousand tons/year.By the improvement of these surrounding enviroment, the atmosphere pollution of urban area and haze situation are polluted and also will greatly be improved.
The disposal of combustible
According to the feature of life in China refuse landfill and the feature of our equipment, we are according to a preliminary estimate: take up an area 100 mu for one, the household refuse landfill sites of average landfill thickness 5 meters, the total amount of combustible is about 150,000 tons.Combustible, after packing, can be transported to MSW Incineration Plant.The calorific value of these combustibles, enters the calorific value (about 850 kilocalories) of the ecosystem rubbish of factory far away higher than current MSW Incineration Plant.Our investigation is, even if can not obtain the condition of rubbish rate for incorporation into the power network subsidy from National Development and Reform Committee at MSW Incineration Plant, house refuse adds the multifuel combustion of these combustibles, also can create good profitable conditions for MSW Incineration Plant.This can be found out by calculating below.
First, table 2 is that the house refuse composition component dry base heat value of standard is containing scale.As can be seen from the table, form swill and the dirt of house refuse peat, dry base heat value is only at 1000 much cards; Form metal, the category of glass material of house refuse Recyclable, substantially without calorific value; And forming the paper of house refuse combustible, plastics, yarn fabric, vegetation, calorific value is all very high, particularly Plastic material, and dry base heat value is up to nearly 8000 kilocalories.
Table 2. house refuse composition component dry base heat value is containing scale.
Further, we are according to upper column data, simply estimate in domestic garbage burning electricity generation process by some tentation datas, organic matter and combustible are to the contribution of generated energy.We can simply suppose: it is organic containing 50% that ecosystem enters factory's house refuse, organic moisture 50%; Ecosystem enters factory's house refuse containing 25% combustible, combustible moisture 25%; Consult table 3.
Table 3. simply hypothesis ecosystem enters factory's house refuse component.
| If: | |
| The house refuse content of organic matter | 50％ |
| Organic water is moisture | 50％ |
| The organic contents on dry basis of house refuse | 25.00％ |
| House refuse combustible content | 25％ |
| Combustible is moisture | 25％ |
| House refuse combustible contents on dry basis | 18.75％ |
According to this hypothesis component, table 4 gives in simple domestic garbage burning electricity generation process, and organic and combustible is estimated the contribution of generated energy.Although this method of estimation differs with actual power process, data are also only for discussing, but overall conclusion should be similar, that is: account for the organic matter entered in factory's ecosystem house refuse of weight 50%, the combustible entered in factory's ecosystem house refuse accounting for and weigh less than 30% is far smaller than to the contribution of generating.
In the simple domestic garbage burning electricity generation process of table 4., organic and combustible is estimated the contribution of generated energy.
Further, MSW Incineration Plant Chinese at present, generating income performs by " National Development and Reform Commission, about the notice improving waste incineration and generating electricity pricing policy, sends out and changes No. (2012) 801, price " file.This file main spirits has: 1) house refuse per ton conversion electricity volume is fixed tentatively is 280 kilowatt hours, and performs unified garbage power stake electrovalence every kilowatt hour 0.65 yuan (containing tax) in the whole nation (this is pressed into the generated energy that factory's ecosystem house refuse mean calorie 850 kcal/kg converts out); 2) when the electricity volume of converting with garbage treatment quantity lower than actual electricity volume 50% time, be considered as conventional power generation usage project, garbage power price subsidies must not be enjoyed; When convert electricity volume higher than actual electricity volume 50% and lower than actual electricity volume time, using the electricity volume of converting as garbage power electricity volume; When converting electricity volume higher than actual electricity volume, using actual electricity volume as garbage power electricity volume.Under such precondition, if ecosystem house refuse is added the multifuel combustion of these combustibles by MSW Incineration Plant, although municipal solid waste incinerator may not obtain garbage power price subsidies, income is also good, calculates real row as follows:
We first provide the master data (table 5) calculating income, and in the table, the combustible calorific value that the process of setting landfill yard produces is 3500 kilocalories/kilocalorie; The rate for incorporation into the power network adopting 100% consumer waste incineration conversion is 0.65 yuan/degree, and must not to enjoy garbage power price subsidies rate for incorporation into the power network be 0.45 yuan/degree.
Table 5. house refuse Pool Purchase Price calculates master data value.
According to master data above, table 6 is generating income (for 100 tons) in two kinds of situations.Situation 1:100 ton is made up of the ecosystem house refuse of 100%; The combustible that situation 2:100 ton adds 20 tons of landfill yard multiplexing process generations by 80 tons of ecosystem house refuses forms.Generating and income situation are listed in table 6.
Generating income (for 100 tons) in table 6. two kinds of situations.Situation 1:100 ton is made up of the ecosystem house refuse of 100%, enjoys garbage power price subsidies; The combustible that situation 2:100 ton adds 20 tons of landfill yard multiplexing process generations by 80 tons of ecosystem house refuses forms, and goes without garbage power price subsidies.
As can be seen from Table 6, 100 tons by 100% the house refuse that forms of ecosystem house refuse to generate electricity that conversion rate for incorporation into the power network takes in be 18200 yuan, 100 tons are added the house refuse that form of combustible that 20% landfill yard multiplexing process produces and are generated electricity by the ecosystem house refuse of 80% and convert rate for incorporation into the power network, although by " National Development and Reform Commission is about the notice improving waste incineration and generating electricity pricing policy, send out and change No. (2012) 801, price " file, because entering the electricity volume of factory's ecosystem garbage treatment quantity conversion lower than 50% (49.3%) of actual electricity volume, be considered as conventional power generation usage project, garbage power price subsidies must not be enjoyed, but income is still 20456 yuan, exceeds 12% than situation 1.If the combustible proportion of composing that landfill yard multiplexing process produces increases again, income also can correspondingly increase again.
Claims (3)
1. a land reclamation processing method for refuse landfill, is characterized in that, comprise the following steps,
A. whole landfill yard is again excavated, clears up, processes;
B. peat, combustible, recyclable materials, not recyclable inorganic substances, danger refuse matter is sorted out;
C. the place that peat is transported to soil treatment, desert is controlled;
D. combustible packing is transported to garbage incinerating power plant for burning electricity generation;
E. reclaim after recyclable materials harmless treatment;
F. not recyclable inorganic substances landfill on the spot;
G. waste of endangering delivers to Wei Fei center;
H. innoxious soil is obtained.
2. the land reclamation processing method of refuse landfill according to claim 1, is characterized in that:
First large excavator is utilized to be separated with large-scale ribbon the armored concrete in described above-mentioned steps landfill yard, large-scale weaving block;
After being separated armored concrete, large-scale weaving block and large-scale ribbon in landfill yard, disposable all house refuses are all sent into cutter fragmentation;
When mass concrete, large-scale weaving block and large-scale ribbon, disposable all excavations house refuse out is all sent into cutter fragmentation, consider treatment process more later;
Material after fragmentation is sieved to first order roller machine by conveyer belt and distributing device cloth;
The oversize of first order roller machine screening sends into the first winnowing machine sorting, selection by winnowing be categorized as brick/watt/stone and combustible; Wherein, after combustible packing, send garbage burning factory process, brick/watt/stone etc. backfills on the spot;
The screenings of first order roller machine screening is sieved to the second level, containing the roller machine of multiple-roll structure by conveyer belt;
The screenings of the <20mm that the roller machine of second level multiple-roll structure sieves out makes the fertile soil for soil remediation after magnetic separation;
The oversize of the roller machine screening of second level multiple-roll structure sends into the second winnowing machine sorting;
Second pneumatic separator screenings is after magnetic separation, the process of Recyclable sorting operation, and surplus materials is can the harmless inorganic substances of landfill on the spot, landfill on the spot;
Second pneumatic separator oversize is after artificial separation, building materials and Recyclable sorting, and being packaged as can for the combustible of waste incineration station-service.
3. the land reclamation processing method of refuse landfill according to claim 1, is characterized in that, described recyclable materials genus, structural glass, bulk plastic, fritter electronic product block covered with gold leaf etc.; Not recyclable materials comprise brick, watt, rubble, glass is broken etc.
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Cited By (9)
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| CN109351755A (en) * | 2018-10-31 | 2019-02-19 | 华南理工大学 | A kind of processing method of aging rubbish |
| CN109821852A (en) * | 2019-02-25 | 2019-05-31 | 杨帆 | A kind of household refuse landfill sites are administered and life refuse processing method |
| CN110624928A (en) * | 2019-10-09 | 2019-12-31 | 安徽国祯环卫科技有限公司 | Garbage pile excavation operation method |
| CN114888059A (en) * | 2022-03-31 | 2022-08-12 | 生态环境部华南环境科学研究所 | Risk management and control method based on safe utilization of pollution site |
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