CN103230927B - On-site ectopic enhanced aerobic stabilization method for household garbage landfill - Google Patents
On-site ectopic enhanced aerobic stabilization method for household garbage landfill Download PDFInfo
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Abstract
The invention discloses an on-site ectopic enhanced aerobic stabilization method for a household garbage landfill, and belongs to environmental engineering. According to the method, the staged stepwise excavation is adopted, and the operation can be performed synchronously or in stages, so that the operation progress is guaranteed and the operation efficiency is improved; the material sorting is performed on excavated stale garbage, so that the resource utilization and the safe treatment of the garbage can be realized; and therefore, the landfill amount of the stale garbage is reduced, the space utilization efficiency of the household garbage landfill is improved, the oxidation rate of sorted muck is improved in a natural drying or forced ventilation mode, and the muck stabilization time is shortened. The sorted muck is subjected to backward stepwise backfill, so that the stability of the landfill is improved, the stabilization rate of the stale garbage is accelerated, the sanitary environment of the landfill is improved, and the requirement on special equipment is low; and the method is applicable to fast stabilization and restoration engineering for the simple household garbage landfill.
Description
Technical field
The invention discloses one way of life refuse landfill former address dystopy strengthening aerobic stabilization method, belong to environmental project class.
Background technology
According to statistics, China has at present more than 3519 Simple Landfill Site, accounts for 29% of national household refuse landfill sites quantity, urgently repairs.And, by 2010, the whole nation 935 household refuse landfill sites in non-antiseepage accounted for 34%, non-environmental protection inspection and acceptance accounted for 26%.In the same year, the contamination accident of the ground such as Xi'an, Shenzhen generation Mini nutritionalassessment reaches more than 10 and rises.A large amount of Mini nutritionalassessment serious threat safety of surrounding environments, urgently repairs.
Modern life Construction of Refuse Landfill Yard is with high costs, and addressing is harsh, seriously limits the economic development in city.Nervous for solving urban land, implement to transform the reparation of outmoded type Mini nutritionalassessment, and recover to use.At home in each big city, above-mentioned suggestion is progressively put on the agenda.
At present, representative recovery technique has several as follows: (1) arranges vertical grouting curtain is main.The method is mainly through adopting special mechanical equipment at landfill yard periphery, and boring is potting compound gel material also, and then forms the seepage proof curtain of the hydraulicity, level isolation household refuse landfill sites and surrounding enviroment, and preventing pollution thing is on the impact of surrounding enviroment; (2) house refuse transfer.The method is mainly excavated and is transported house refuse, by house refuse from new landfill in qualified household refuse landfill sites, and repairs the region that pollutant leaks.
Analyzing based on above-mentioned restorative procedure, is only isolate pollutant in method (1), and the actual reparation object not reaching fast and stable, simultaneously for landfill yard land used and storage capacity also unrealized recycling.Method (2) is actual is the transfer of house refuse, the also fast and stable of unrealized house refuse.Although other section plannings can separately be made in place, garbage loading embeading still needs to take larger area.Two kinds of methods, inherently do not realize house refuse fast and stable and place recycling.
Based on document analysis and environmental sanitation department achievement of investigation and research, house refuse is become thoroughly decomposed and major part can be degraded into fertile soil in 10 years ~ 20 years, and Plastic, building waste then still can not be degraded for more than 100 years.Containing abundant N, P, K in fertile soil, it is first-class forest fertilizer.According to statistics, the simple and easy household refuse landfill sites of China existing more than 90% has been on active service more than 20 years, and house refuse is become thoroughly decomposed substantially, and most of landfill yard all exists environmental pollution in various degree, faces fast and stable and reparation.For this reason, invent a kind of simple and easy household refuse landfill sites fast and stable restorative procedure, promote such household refuse landfill sites fast and stable and realize place recycling, very necessary.
Summary of the invention
For above-mentioned existing problems, the object of the present invention is to provide one way of life refuse landfill former address dystopy strengthening aerobic stabilization method, the method comprises following steps,
One way of life refuse landfill former address dystopy strengthening aerobic stabilization method, comprises following steps,
1. former address is excavated
From the periphery of household refuse landfill sites to the bench cut of landfill yard interstage property, ladder height 3 ~ 5m;
2. material sorting
By manual sorting and mechanical sorting, the material excavated is divided into masonry, metal, hazardous waste, combustible and dregs;
3. dregs aeration
By step 2. in the dregs natural drying of classification or forced ventilation, fully oxidized to dregs;
4. dregs dystopy backfill
The screening dregs Reverse Step formula backfill that flight is excavated.
The combination of one or more that described mechanical sorting refers to vibrosieve, rolls in screening, magnetic separation, selection by winnowing.
Owing to have employed above technical scheme, one way of life refuse landfill former address of the present invention dystopy strengthening aerobic stabilization method adopts interim staged to excavate, both can synchronization job, also can operation stage by stage, has ensured job scheduling, has improve operating efficiency; Material sorting is carried out to the old rubbish after excavating, the utilization of resources and refuse safe handling can be realized, thus decrease old garbage loading embeading amount, improve the utilization of area efficiency of household refuse landfill sites; With natural drying or force ventilated mode, oxidation rate is improve to the dregs after screening, shortens dregs stabilization time.To the dregs Reverse Step formula backfill after screening, improve the stability of landfill yard, accelerate the steady rate of old rubbish, improve the hygienic conditions of landfill yard.The method is easy, and professional equipment demand is few, is suitable for the fast and stable recovery project of simple and easy household refuse landfill sites.
accompanying drawing illustrates:
Accompanying drawing is schematic flow sheet of the present invention.
Detailed description of the invention
Now the detailed description of the invention of one way of life refuse landfill former address dystopy strengthening aerobic stabilization method is described in detail:
One way of life refuse landfill former address dystopy strengthening aerobic stabilization method, comprises following steps,
1. former address is excavated
From the periphery of household refuse landfill sites to the bench cut of landfill yard interstage property, ladder height 3 ~ 5m;
2. material sorting
By manual sorting and mechanical sorting, the material excavated is divided into masonry, metal, hazardous waste, combustible and dregs;
3. dregs aeration
By step 2. in the dregs natural drying of classification or forced ventilation, fully oxidized to dregs;
4. dregs dystopy backfill
The screening dregs Reverse Step formula backfill that flight is excavated.
The combination of one or more that described mechanical sorting refers to vibrosieve, rolls in screening, magnetic separation, selection by winnowing.
The masonry of feed separation also can be used for building materials or as roadbase backfill material, the metal recovery of sorting, the hazardous wastes such as battery enter the process of security landfill field, be transported to burning power plant and burn after the combustible packings such as wood is assorted, cloth is assorted, plastic cement are bundled.
Forced ventilation can adopt mechanical air blast.
For setting forth embodiments of the present invention further, will be described in conjunction with following concrete case study on implementation:
the simple and easy household refuse landfill sites recovery project of the outmoded type in case study on implementation 1 Beijing
This household refuse landfill sites quantities is about 45000m
3, landfill field depth 12m, old msw water content 43%, old component of refuse is in table 1.
the old component of refuse of the simple and easy household refuse landfill sites of the outmoded type in table 1 Beijing
| Sequence number | Project | Testing result (wet basis) |
| 1 | Ash great soil group | 38.53 |
| 2 | Brick and tile ceramic-like | 3.57 |
| 3 | Metal species | 0.05 |
| 4 | Category of glass | 0.43 |
| 5 | Stationery | 0.02 |
| 6 | Rubber and plastic class | 5.06 |
| 7 | Textile | 0.15 |
| 8 | Type of wood and bamboo | 0.13 |
| 9 | Shell | 0.69 |
| 10 | Other | 0.02 |
| 11 | Dregs class | 51.37 |
| 12 | Unit weight | 837kg/m 3 |
Adopt this method process, excavating to opposite side from landfill yard, be divided into 4 stages to carry out, each stage excavation width is 200m, and each stage is 4 flights, and top layer is 3m, and intermediate layer is 3.5m, and bottom is 2m, the wide 50m of ladder.
This engineering to old sieving garbage and sorting (screening, magnetic separation, selection by winnowing and manual sorting), amounts to Footwall drift 20 tons, combustible 2000 tons, and process masonry 1380 tons, separates dregs 27000 tons.Wherein, be sent to neighbouring waste incineration after combustible packing and send out power plant burning, masonry backfills as roadbed filling, and dregs Reverse Step formula is backfilling into former landfill yard.Force ventilation mode is adopted to the aeration of dregs.
the simple and easy household refuse landfill sites recovery project of the outmoded type in case study on implementation 2 Shenzhen
Shenzhen household refuse landfill sites quantities is 20000m
3, average thickness is 18m.House refuse composition is in table 2.
the old component of refuse of the simple and easy household refuse landfill sites of the outmoded type in table 2 Shenzhen
| Sequence number | Project | Testing result (wet basis) |
| 1 | Ash great soil group | 31.53 |
| 2 | Brick and tile ceramic-like | 3.97 |
| 3 | Metal species | 0.03 |
| 4 | Category of glass | 0.63 |
| 5 | Stationery | 0.02 |
| 6 | Rubber and plastic class | 6.06 |
| 7 | Textile | 0.15 |
| 8 | Type of wood and bamboo | 0.13 |
| 9 | Shell | 0.69 |
| 10 | Other | 0.04 |
| 11 | Dregs class | 41.37 |
| 12 | Unit weight | 843kg/m 3 |
Adopt this method process, excavation in the middle of four circumferences of landfill yard, be divided into 5 stages to carry out, each stage excavation width is 150m, and each stage is 4 flights, and top layer is 4m, and intermediate layer is 5m, and bottom is 4m, the wide 50m of ladder.
This engineering is to old sieving garbage and sorting (screening, magnetic separation, selection by winnowing and manual sorting), and this engineering amounts to Footwall drift 5 tons, combustible 1100 tons, and process masonry 664 tons, separates dregs 7000 tons.Wherein, be sent to neighbouring waste incineration after combustible packing and send out power plant burning, masonry backfills as roadbed filling, and dregs Reverse Step formula is backfilling into former landfill yard.Natural drying mode is adopted to the aeration of dregs.
Claims (2)
1. one way of life refuse landfill former address dystopy strengthening aerobic stabilization method, is characterized in that: described method comprises following steps,
1. former address is excavated
From the periphery of household refuse landfill sites to the bench cut of landfill yard interstage property, ladder height 3 ~ 5m;
2. material sorting
By manual sorting and mechanical sorting, the material excavated is divided into masonry, metal, hazardous waste, combustible and dregs;
3. dregs aeration
By step 2. in the dregs natural drying of classification or forced ventilation, fully oxidized to dregs;
4. dregs dystopy backfill
The screening dregs Reverse Step formula backfill that flight is excavated.
2. one way of life refuse landfill former address as claimed in claim 1 dystopy strengthening aerobic stabilization method, is characterized in that: the combination of one or more that described mechanical sorting refers to vibrosieve, rolls in screening, magnetic separation, selection by winnowing.
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|---|---|---|---|---|
| WO1995016523A1 (en) * | 1993-12-17 | 1995-06-22 | Biosafe, Inc. | Landfill reclamation |
| CN1511654A (en) * | 2002-12-30 | 2004-07-14 | 叶能魁 | Waste garbage field reclaiming and source recovering and classifying and reutilizing treating system |
| JP2005262056A (en) * | 2004-03-17 | 2005-09-29 | Furukawa Co Ltd | Method of reclaiming final landfill site for waste and apparatus for volume reduction |
| CN1785536A (en) * | 2005-10-21 | 2006-06-14 | 同济大学 | On site environment restoring method of demestic garbage loading embedding field |
| CN101838053A (en) * | 2009-03-20 | 2010-09-22 | 宝山钢铁股份有限公司 | Method for constructing artificial wetland through aged refuse for processing sewage |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995016523A1 (en) * | 1993-12-17 | 1995-06-22 | Biosafe, Inc. | Landfill reclamation |
| CN1511654A (en) * | 2002-12-30 | 2004-07-14 | 叶能魁 | Waste garbage field reclaiming and source recovering and classifying and reutilizing treating system |
| JP2005262056A (en) * | 2004-03-17 | 2005-09-29 | Furukawa Co Ltd | Method of reclaiming final landfill site for waste and apparatus for volume reduction |
| CN1785536A (en) * | 2005-10-21 | 2006-06-14 | 同济大学 | On site environment restoring method of demestic garbage loading embedding field |
| CN101838053A (en) * | 2009-03-20 | 2010-09-22 | 宝山钢铁股份有限公司 | Method for constructing artificial wetland through aged refuse for processing sewage |
Non-Patent Citations (2)
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| 探讨垃圾填埋场开采回用工程;廖利等;《江苏环境科技》;20060630;第19卷(第03期);32-34 * |
| 深圳市盐田港保税区垃圾场无害化处理工程方案;梁顺文等;《环境卫生工程》;19980930;第6卷(第03期);99-103 * |
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