CN103226730A - Evaluation method for environmental effect on life cycle of recycled aggregate - Google Patents
Evaluation method for environmental effect on life cycle of recycled aggregate Download PDFInfo
- Publication number
- CN103226730A CN103226730A CN2013100846773A CN201310084677A CN103226730A CN 103226730 A CN103226730 A CN 103226730A CN 2013100846773 A CN2013100846773 A CN 2013100846773A CN 201310084677 A CN201310084677 A CN 201310084677A CN 103226730 A CN103226730 A CN 103226730A
- Authority
- CN
- China
- Prior art keywords
- regeneration aggregate
- building castoff
- life cycle
- environmental impact
- environmental
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
An evaluation method for the environmental effect on the life cycle of recycled aggregate belongs to the recycling utilization of solid wastes and relates to an evaluation method for objectively, quantitatively and comprehensively analyzing environmental effect conditions of recycling waste resources into the recycled aggregate. The evaluation method references to a life cycle evaluation technology provided by ISO14040; a life cycle environmental effect factor of the recycled aggregate is quantized by using a unit process list analyzing method; and the whole process from the collection of building wastes to the preparation of the recycled aggregate is subjected to environmental effect evaluation in the process of recycling the building wastes into the recycled aggregate. According to the evaluation method provided by the invention, environment effects of different unit processes in the production process of the recycled aggregate can be objectively, quantitatively and comprehensively evaluated and compared and the environmental effects on the life cycles of the recycled aggregate in different production modes can be evaluated and compared.
Description
Technical field
The invention belongs to solid waste resource recovery and utilize the field, be specifically related to that a kind of to be used for objective, quantitative, comprehensive analysis building castoff recycling be the evaluation method of the environmental impact situation of regeneration aggregate.
Background technology
Be accompanied by the development of China's economy, society, quickening of urbanization process, China's building castoff annual production has surpassed 800,000,000 tons/year (not comprising spoil), brings the environmental problem that becomes increasingly conspicuous.Under the strategy of sustainable development promoted, building castoff became the important technology of building castoff resource as regeneration aggregate, also was the important directions of building energy conservation from now on.At present when buildings is carried out evaluation of life cycle, the regeneration aggregate environmental impact that generally will be referred to is considered as zero, obviously should the consideration mode be not comprehensive, one sided, under the situation that regeneration aggregate is widely applied, this carrying capacity of environment can be apparent more important, even may influence buildings evaluation of life cycle result.Therefore, how objective, quantitatively, synthetically analyze the environmental impact that use brought of regeneration aggregate, clear and definite regeneration aggregate there is important references to the influence of building industry sustainable development, building energy conservation and environmental protection target.
Summary of the invention
Technical matters to be solved by this invention is: at the environmental impact problem that application brought of regeneration aggregate in building materials, a kind of method that objective, quantitative, the comprehensive environmental impact to regeneration aggregate production is estimated that is used for is provided, thereby guides building castoff resource and building industry sustainable development to contribute for correct.
The present invention is by the following technical solutions:
A kind of regeneration aggregate life cycle environmental impact evaluation method, this method is: the evaluation of life cycle technological frame that provides with ISO14040 is a foundation, adopt unit process inventory analysis method that the regeneration aggregate life cycle environmental impact factor is quantized, to the building castoff recycling is in the regeneration aggregate process, collects the overall process that regeneration aggregate preparation finishes from building castoff and carries out environmental impact assessment.
Described regeneration aggregate life cycle environmental impact evaluation method comprises: the influence that resource, energy resource consumption and the pollutant emission of avoid that building castoff is stored up, building castoff collection, building castoff initial gross separation, building castoff fragmentation and screening, regeneration aggregate being strengthened five unit processes causes environment.
Describedly avoid building castoff to store up unit process being meant that building castoff is used as regeneration aggregate and has avoided it is directly stored up disposal, this process is calculated the transportation of building castoff and is stored up and takes up an area of the environmental impact that two-part resource, energy resource consumption and pollutant emission cause, its result is a negative value, be illustrated in the whole environmental impacts of regeneration aggregate this and be considered as avoiding the environmental impact that produces, as the reduction item.
Described building castoff collector unit process is meant the process of when building castoff is used as regeneration aggregate building castoff being collected the disposal field, this process is calculated building castoff and is collected radius, calculate the environmental impact that the transhipment from construction waste deposits yields ground to the building castoff disposal field causes according to the resource of collecting radius, collecting device and consumption, variety of energy sources
Collect radius
Wherein: 0 expression transportation range is disregarded km; Handle the expression building castoff on the spot and producing directly utilization of ground;
Expression construction waste deposits yields ground is to the mean distance that centrally disposes enterprise; Focus on and represent that building castoff is transported to special disposal enterprise and handles; The collection radius that R represents in the actual computation to be got, km.
Described building castoff initial gross separation unit process is meant the process of removing impurity such as reinforcing bar, earth when building castoff is produced regeneration aggregate, can comprise a step or the multistep in fragmentation, letter sorting, desilt and the auxiliary treatment step such as gather dust, this process is calculated selected institute's energy consumption and the environmental emission in steps that carries out, and environmental emission comprises according to energy consumption calculation environmental emission and direct pollutant emission.
The fragmentation of described building castoff and sieve unit process are meant when building castoff is produced regeneration aggregate its fragmentation and screening are the process of different-grain diameter regeneration aggregate, energy consumption and environmental emission in the dust removal process that this process is calculated fragmentation, sieves and carried out simultaneously, environmental emission comprise according to the environmental emission of energy consumption calculation and directly pollutant emission.
Described regeneration aggregate is strengthened unit process and is meant when building castoff is produced regeneration aggregate to improving the process that methods such as physics that its quality carries out, chemistry are handled, the different modes that this process calculating regeneration aggregate is taked carries out the energy consumption and the environmental emission of strengthening process, and environmental emission comprises according to the environmental emission of energy consumption calculation and directly pollutant emission.
In five above-mentioned unit processes, if do not take wherein a certain unit process in the actual production, the carrying capacity of environment that then will lack unit process is designated as 0.
Above-mentioned inventory result is divided in non-renewable resources exhaustion, greenhouse effect, environment acidifying, photo-chemical smog, health infringement and six kinds of environmental impact types of land seizure, carries out characterization and normalization and calculate, and the result is made an explanation.
When carrying out characterization, characterization factor reflection be the latent value that material causes certain environmental impact, with each influence classification down discharge capacity of material multiply by the characterization factor separately and sum up, six kinds of environmental impacts that obtain each unit process value of diving.In order further to contrast the relative size between the various environmental impacts, characterization results is carried out normalized.Calculate the process influence type parameter relative value of consequence according to benchmark and be called normalization, the normalization process respectively divided by separately reference value, makes it become identical dimension characterization results, so that compare mutually or further merge into single desired value.Choose for the normalization reference value, use total release or resource memory space in the specific territorial scope usually.Through after the normalized, every environmental index value can carry out that equal weight adds and, finally with the form of single desired value, the potential impact that every kind of waste treatment mode of comprehensive characterization causes environment.
The evaluation method that this method provides, the environmental impact of different units process can be estimated the environmental impact of producing with the regeneration aggregate that contrasts the different modes of production in evaluation that can be objective, quantitative, comprehensive and the contrast regeneration aggregate production run.
Description of drawings
The schematic flow sheet that Fig. 1 estimates for regeneration aggregate life cycle environmental impact among the present invention.
Fig. 2 regeneration aggregate life cycle environmental impact composition and unit process normalization is comparison diagram as a result.
Embodiment
The invention will be further described below in conjunction with embodiment and accompanying drawing.
Xuchang, Henan gold section building is cleared in company limited's " utilizing building waste to produce 30 ten thousand stere pervious floor tiles, curb etc. and 200 ten thousand stere regenerated building sandstone aggregate projects ", and 200 ten thousand stere regeneration aggregate productions are example.Dissolve the altogether building castoff of 220 ten thousand steres of project by simple crushing, produces that regeneration is thick, fine aggregate totally 200 ten thousand steres.Selection unit's weight (1 ton) is functional unit, carries out the evaluation of regeneration aggregate life cycle carrying capacity of environment.
The first step: list regeneration aggregate life cycle environmental impact inventory:
One, avoid building castoff to store up unit process
The building castoff recycling can avoid transporting to the process that store up in the suburb, and the environmental impact of this process mainly contains two aspects: transportation and store up occupation of land.According to actual conditions, the transportation of heavy goods vehicle urban road is adopted in transportation, and distance is assumed to be 10km.According to road transport process and store up situation calculation note result, and the inventory of avoiding behind the recycling is exactly the negative value of said process, and the result is Q
1, as shown in table 1.
Table 1 avoids building castoff to store up unit process inventory Q
1(kg/t)
Annotate: kg/t refers to regeneration aggregate per ton and produces the material value that institute consumes or produces; Wherein, rock gas unit is m
3/ t, the soil accounts for
With unit is m
2Year/t.
Two, building castoff collector unit process
Institute gives an actual example to belong to and focuses on, and collects radius and is averaged radius value.But because the shortage real data, it is fewer to dispose enterprise according to the current stage building castoff, causes transporting to building castoff and disposes enterprise apart from often storing up ground far than directly transporting to, is assumed to be 15km at this.This process main environment influence comes from the transportation of discarded object, adopts the heavy goods vehicle urban road, and the inventory result is Q
2, as shown in table 2.
Table 2 building castoff collector unit process inventory Q
2(kg/t)
Annotate: kg/t refers to building castoff per ton and disposes the material value that institute consumes or produces; Wherein, rock gas unit is m
3/ t.
Three, the initial gross separation unit process of building castoff
Enterprise handled the citywide building castoff during institute gave an actual example operating concessions, can in the building demolition process, simply sort out building castoff, building castoff that can resource just is transported to disposes enterprise, therefore, the building castoff that arrives factory is except that discarded brick and tile, concrete, other impurity are less, avoided the initial gross separation unit process, and inventory is Q as a result
3Be 0.
Four, the fragmentation of building castoff and sieve unit process
The fragmentation of Klinsmann crawler type and the screening plant of import adopted in broken and screening, and diesel reduces dust by watering in the whole process.Because the characterization factor of the consumption of water is difficult to determine, does not consider the use of water at this.Coarse aggregate and fine aggregate are by identical disposal process, and therefore, the environmental impact that is produced is identical, can calculate together, and the inventory result is Q
4, as shown in table 3.
The fragmentation of table 3 building castoff and sieve unit process inventory Q
4(kg/t)
Annotate: kg/t refers to building castoff per ton and disposes the material value that institute consumes or produces; Wherein, rock gas unit is m
3/ t.
Five, regeneration aggregate is strengthened unit process
Give an actual example in not to the intensive treatment of regeneration aggregate, this element process inventory is Q as a result
5Be 0.
Comprehensive above-mentioned inventory result gets following master list, and is as shown in table 4.
Table 4 building castoff LCIA invoice summary (kg/t)
Annotate: kg/t refers to regeneration aggregate per ton and produces the material value that institute consumes or produces; Wherein, rock gas unit is m
3/ t, land seizure unit are m
2Year/t.
Second step, quantitatively evaluating regeneration aggregate life cycle environmental impact:
According to the feature of regeneration aggregate production run, select the environmental impact type relate to, and factor of influence is sorted out, as shown in table 5.
Table 5 environmental impact type selecting and distribution
According to characterization and the normalized factor selected, to the characterization of listings data, this step can will cause the material of environmental impact of the same race to merge based on natural science, finally characterize the environmental impact of evaluation object with several big class environmental index; In order further to contrast the relative size between the various environmental impacts, need to continue carry out normalized to characterization results, obtain regeneration aggregate life cycle environmental impact result, as shown in table 6.
Life cycle environmental impact characterization of table 6 building castoff and normalization result
Through after the normalized, every environmental index value can carry out that equal weight adds and, finally with the form of single desired value, the potential impact that every kind of waste treatment mode of comprehensive characterization causes environment.
According to influencing evaluation result, can contrast the influence of different units process environment and form and difference, see Fig. 2.As can be seen from the figure, the building castoff recycling is that regeneration aggregate has been saved the soil to a great extent; Environmental impact largest unit process under these technical conditions during recycling is the collection process of building castoff, and both discarded object was transported to the disposal enterprise process, and therefore, during the building castoff recycling, the addressing of disposal of resources enterprise is extremely important.
Do not elaborate in this instructions the source basic data all from the LCA of Beijing University of Technology database, other contents that do not elaborate belong to this area professional and technical personnel's known prior art.
Claims (6)
1. regeneration aggregate life cycle environmental impact evaluation method, it is characterized in that: the evaluation of life cycle technological frame that provides with ISO14040 is a foundation, adopts the method that comprises following two steps:
The first step, list regeneration aggregate life cycle environmental impact inventory:
According to the characteristics of regeneration aggregate life cycle environmental impact, its life cycle is divided into avoids that building castoff is stored up, building castoff collection, building castoff initial gross separation, building castoff fragmentation and screening, regeneration aggregate strengthen five unit processes; List each unit process inventory respectively;
Second step, quantitatively evaluating regeneration aggregate life cycle environmental impact:
Selection environment influences type, and the inventory result is divided into various the influence in the type, carries out characterization and normalization in that the factor of influence place is influenced type, and the result is made an explanation; Described environmental impact type is chosen six kinds of non-renewable resources exhaustion, greenhouse effect, environment acidifying, photo-chemical smog, health infringement and land seizures.
2. regeneration aggregate life cycle environmental impact evaluation method as claimed in claim 1, it is characterized in that: describedly avoid building castoff to store up unit process calculating building castoff from producing ground to the transportation of storing up the place with store up and take up an area of the environmental impact that two-part resource, energy resource consumption and pollutant emission cause, its result is a negative value, is illustrated in the regeneration aggregate environmental impact as the reduction item.
3. regeneration aggregate life cycle environmental impact evaluation method as claimed in claim 1, it is characterized in that: described building castoff collector unit process is calculated building castoff and is collected radius, calculate the environmental impact that the transhipment from construction waste deposits yields ground to the building castoff disposal field causes according to the resource of collecting radius, collecting device and consumption, variety of energy sources
Collect radius
Wherein: 0 expression transportation range is disregarded km; Handle the expression building castoff on the spot and producing directly utilization of ground;
Expression construction waste deposits yields ground is to the mean distance that centrally disposes enterprise; Focus on and represent that building castoff is transported to special disposal enterprise and handles; The collection radius that R represents in the actual computation to be got, km.
4. regeneration aggregate life cycle environmental impact evaluation method as claimed in claim 1 is characterized in that:
Described building castoff initial gross separation unit process is meant removes the process that comprises reinforcing bar, these impurity of earth when building castoff is produced regeneration aggregate, comprise a step or the multistep in fragmentation, letter sorting, desilt and the auxiliary step of gathering dust, this process is calculated selected institute's energy consumption and the environmental emission in steps that carries out, and environmental emission comprises according to energy consumption calculation environmental emission and direct pollutant emission.
5. regeneration aggregate life cycle environmental impact evaluation method as claimed in claim 1, it is characterized in that: the fragmentation of described building castoff and sieve unit process are meant when building castoff is produced regeneration aggregate its fragmentation and screening are the process of different-grain diameter regeneration aggregate, energy consumption and environmental emission in the dust removal process that this process is calculated fragmentation, sieves and carried out simultaneously, environmental emission comprise according to the environmental emission of energy consumption calculation and directly pollutant emission.
6. regeneration aggregate life cycle environmental impact evaluation method as claimed in claim 1, it is characterized in that: described regeneration aggregate is strengthened unit process and is meant when building castoff is produced regeneration aggregate to improving the process that comprises physics, chemical method processing that its quality is carried out, the different modes that this process calculating regeneration aggregate is taked carries out the energy consumption and the environmental emission of strengthening process, and environmental emission comprises according to the environmental emission of energy consumption calculation and directly pollutant emission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100846773A CN103226730A (en) | 2013-03-15 | 2013-03-15 | Evaluation method for environmental effect on life cycle of recycled aggregate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100846773A CN103226730A (en) | 2013-03-15 | 2013-03-15 | Evaluation method for environmental effect on life cycle of recycled aggregate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103226730A true CN103226730A (en) | 2013-07-31 |
Family
ID=48837170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100846773A Pending CN103226730A (en) | 2013-03-15 | 2013-03-15 | Evaluation method for environmental effect on life cycle of recycled aggregate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103226730A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106251247A (en) * | 2016-07-14 | 2016-12-21 | 长江三峡勘测研究院有限公司（武汉） | A kind of aggregate quality evaluating method based on sandstone |
| CN110414770A (en) * | 2019-05-30 | 2019-11-05 | 西安航空职业技术学院 | A kind of integrated evaluating method of the LCA that stalk resource utilizes and LCC |
| CN111768088A (en) * | 2020-06-15 | 2020-10-13 | 中国建材检验认证集团股份有限公司 | Waste resource utilization value quantitative evaluation model, method and device |
| CN112463768A (en) * | 2020-12-10 | 2021-03-09 | 浙江大学 | Method for establishing life cycle evaluation database |
| CN113516416A (en) * | 2021-08-11 | 2021-10-19 | 广西壮族自治区环境应急与事故调查中心 | Method, device, equipment and medium for evaluating cement kiln waste disposal complete cycle |
| CN113762732A (en) * | 2021-08-17 | 2021-12-07 | 东南大学 | Intelligent evaluation method for environmental impact of building demolition waste |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1556964A (en) * | 2002-04-15 | 2004-12-22 | 松下电器产业株式会社 | Environment impact assessment method |
| CN101894329A (en) * | 2010-07-19 | 2010-11-24 | 武汉理工大学 | Method for evaluating environmental effect on bridge life cycle |
| CN101922139A (en) * | 2010-09-28 | 2010-12-22 | 武汉理工大学 | Analysis method of bridge life cycle environmental impact cost |
-
2013
- 2013-03-15 CN CN2013100846773A patent/CN103226730A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1556964A (en) * | 2002-04-15 | 2004-12-22 | 松下电器产业株式会社 | Environment impact assessment method |
| CN101894329A (en) * | 2010-07-19 | 2010-11-24 | 武汉理工大学 | Method for evaluating environmental effect on bridge life cycle |
| CN101922139A (en) * | 2010-09-28 | 2010-12-22 | 武汉理工大学 | Analysis method of bridge life cycle environmental impact cost |
Non-Patent Citations (2)
| Title |
|---|
| VLASTIMIR RADONJANIN,ETC: "Comparative environmental assessment of natural and recycled aggregate concrete", 《WASTE MANAGEMENT》 * |
| 李惠强等: "建筑垃圾资源化循环再生骨料混凝土研究", 《华中科技大学学报》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106251247A (en) * | 2016-07-14 | 2016-12-21 | 长江三峡勘测研究院有限公司（武汉） | A kind of aggregate quality evaluating method based on sandstone |
| CN110414770A (en) * | 2019-05-30 | 2019-11-05 | 西安航空职业技术学院 | A kind of integrated evaluating method of the LCA that stalk resource utilizes and LCC |
| CN111768088A (en) * | 2020-06-15 | 2020-10-13 | 中国建材检验认证集团股份有限公司 | Waste resource utilization value quantitative evaluation model, method and device |
| CN112463768A (en) * | 2020-12-10 | 2021-03-09 | 浙江大学 | Method for establishing life cycle evaluation database |
| CN113516416A (en) * | 2021-08-11 | 2021-10-19 | 广西壮族自治区环境应急与事故调查中心 | Method, device, equipment and medium for evaluating cement kiln waste disposal complete cycle |
| CN113516416B (en) * | 2021-08-11 | 2023-04-18 | 广西壮族自治区环境应急与事故调查中心 | Evaluation method, device, equipment and medium for cement kiln waste treatment complete cycle |
| CN113762732A (en) * | 2021-08-17 | 2021-12-07 | 东南大学 | Intelligent evaluation method for environmental impact of building demolition waste |
| CN113762732B (en) * | 2021-08-17 | 2024-04-19 | 东南大学 | Intelligent evaluation method for environmental impact of building demolition waste |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wang et al. | Considering life-cycle environmental impacts and society's willingness for optimizing construction and demolition waste management fee: An empirical study of China | |
| CN103226730A (en) | Evaluation method for environmental effect on life cycle of recycled aggregate | |
| Cai et al. | Developing the ecological compensation criterion of industrial solid waste based on emergy for sustainable development | |
| Wang et al. | Combining life cycle assessment and Building Information Modelling to account for carbon emission of building demolition waste: A case study | |
| Hossain et al. | Comparative environmental evaluation of construction waste management through different waste sorting systems in Hong Kong | |
| Huang et al. | Using material/substance flow analysis to support sustainable development assessment: A literature review and outlook | |
| Wiedenhofer et al. | Prospects for a saturation of humanity’s resource use? An analysis of material stocks and flows in nine world regions from 1900 to 2035 | |
| Lu et al. | Investigating the bulk density of construction waste: A big data-driven approach | |
| Liang et al. | Performance assessment of circular economy for phosphorus chemical firms based on VIKOR-QUALIFLEX method | |
| Wu et al. | Quantification of carbon emission of construction waste by using streamlined LCA: a case study of Shenzhen, China | |
| Wang et al. | Life cycle assessment of building demolition waste based on building information modeling | |
| Crawford et al. | A framework for assessing the environmental benefits of mass timber construction | |
| Hu et al. | Visualizing the research of embodied energy and environmental impact research in the building and construction field: A bibliometric analysis | |
| CN103345566A (en) | Geochemical exploration anomaly recognizing and evaluating method based on contents contained in geology | |
| Zhang et al. | Evaluation of carbon and economic benefits of producing recycled aggregates from construction and demolition waste | |
| CN110796375B (en) | Ecological technology screening layout method in urban moving land landscaping | |
| Guo et al. | Carbon emission calculation methods for highway tunnel construction | |
| Smitha et al. | A Life Cycle Analysis Based Framework to Promote Circular Economy in the Building Sector | |
| Olukanni et al. | Cost appraisal of municipal solid waste transfer to disposal site using visual basic program | |
| Sari et al. | A landfill based approach to surface mine design | |
| Li et al. | Environmental impact balance of building structures and substitution effect of wood structure in Taiwan | |
| Mei | The construction and demolition waste management in Malaysia: the life cycle assessment analysis approach to sustainability | |
| CN113762732B (en) | Intelligent evaluation method for environmental impact of building demolition waste | |
| do Amaral et al. | Life cycle assessment in construction and demolition waste management: a critical review | |
| Meng et al. | Analysis of Influencing Factors on Solid Waste Generation of Public Buildings in Tropical Monsoon Climate Region |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130731 |
|
| RJ01 | Rejection of invention patent application after publication |