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ORWARE – A simulation model for organic waste handling systems.: Part 1: Model description
KTH, Superseded Departments, Environmental Technology and Work Science.ORCID iD: 0000-0002-5535-6368
KTH, Superseded Departments, Environmental Technology and Work Science.
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1997 (English)In: Resources, Conservation and Recycling, ISSN 0921-3449, E-ISSN 1879-0658, Vol. 21, no 1, 17-37 p.Article in journal (Refereed) Published
Abstract [en]

A simulation model, ORWARE (ORganic WAste REsearch), for the handling of organic waste in urban areas has been constructed. The model provides a comprehensive view of the environmental effects, plant nutrient utilisation and energy turnover for this large and complex system. The ORWARE model consists of several sub-models; sewage plant, incineration, landfill, compost, anaerobic digestion, truck transport, transport by sewers, residue transport and spreading of residues on arable land. The model is intended for simulating different scenarios, and the results are: emissions to air and water, energy turnover and the amount of residues returned to arable land. All results are presented, both as the gross figure for the entire system and figures for each process. Throughout the model all physical flows are described by the same variable vector, consisting of 43 substances. This extensive vector facilitates a thorough analysis of the results, but involves some difficulties in acquiring relevant data. In this paper, the model is described. Results from a hypothetical case study are presented in a companion paper.

Place, publisher, year, edition, pages
1997. Vol. 21, no 1, 17-37 p.
Keyword [en]
Systems analysis; Modelling; Waste management; Environmental impact; Plant nutrient recycling; Integrated waste management
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-12389DOI: 10.1016/S0921-3449(97)00020-7OAI: oai:DiVA.org:kth-12389DiVA: diva2:310669
Note
QC 20100415Available from: 2010-04-15 Created: 2010-04-15 Last updated: 2017-12-12Bibliographically approved
In thesis
1. Environmental System Analysis of Waste Management: Experiences from Applications of the ORWARE Model
Open this publication in new window or tab >>Environmental System Analysis of Waste Management: Experiences from Applications of the ORWARE Model
2000 (English)Doctoral thesis, comprehensive summary (Other scientific)
Abstract [en]

Waste management has gone through a history of shiftingproblems, demands, and strategies over the years. In contrastto the long prevailing view that the problem could be solved byhiding or moving it, waste is now viewed as a problem rangingfrom local to global concern, and as being an integral part ofseveral sectors in society. Decisive for this view has beensociety’s increasing complexity and thus the increasingcomplexity of waste, together with a general development ofenvironmental consciousness, moving from local focus on pointemission sources, to regional and global issues of more complexnature.

This thesis is about the development and application orware;a model for computer aided environmental systems analysis ofmunicipal waste management. Its origin is the hypothesis thatwidened perspectives are needed in waste managementdecision-making to avoid severe sub-optimisation ofenvironmental performance. With a strong foundation in lifecycle assessment (LCA), orware aims to cover the environmentalimpacts over the entire life cycle of waste management. It alsoperforms substance flow analysis (SFA) calculations at a ratherdetailed level of the system.

Applying orware has confirmed the importance of applyingsystems perspective and of taking into account site specificdifferences in analysis and planning of waste manage-ment,rather than relying on overly simplified solutions. Somefindings can be general-ised and used as guidelines to reduceenvironmental impact of waste management. Recovery of materialand energy resources from waste generally leads to netreductions in energy use and environmental impact, because ofthe savings this brings about in other sectors. Waste treatmentwith low rate of energy and materials recovery should thereforebe avoided. The exact choice of technology however depends onwhat products can be recovered andhow they are used.

Despite the complexity of the model and a certain degree ofuser unfriendliness, involved stakeholders have expressed thevalue of participating in orware case studies. It providesimproved decision-basis, but also wider understanding of thecomplexity of waste management and of environmental issues ingeneral.

The thesis also contains a first suggestion of a frameworkto handle uncertainty in orware, based on a review of types ofuncertainty in LCA and tools to handle it.

Place, publisher, year, edition, pages
Stockholm: KTH, 2000. x p.
Series
Trita-KET-IM, ISSN 1402-7615 ; 2000:15
Keyword
municipal solid waste (MSW), waste management, waste management planning, model, environmental systems analysis, life cycle assessment (LCA), substance flow analysis (SFA), substance flows, environmental impact, energy, uncertainty
National Category
Chemical Engineering
Identifiers
urn:nbn:se:kth:diva-3055 (URN)
Public defence
2000-12-08, 00:00 (English)
Note
QC 20100413 NR 20140805Available from: 2000-12-07 Created: 2000-12-07 Last updated: 2010-04-28Bibliographically approved
2. Environmental systems analysis waste management: with emphasis on substance flows and environmental impact
Open this publication in new window or tab >>Environmental systems analysis waste management: with emphasis on substance flows and environmental impact
1998 (English)Licentiate thesis, comprehensive summary (Other scientific)
Place, publisher, year, edition, pages
Stockholm: KTH, 1998. viii, 38 p.
Series
Trita-KET-IM, ISSN 1402-7615 ; 1998: 16
Keyword
Avfallshantering, Miljösystemanalys, Waste management planning, Environmental systems analysis
National Category
Engineering and Technology
Identifiers
urn:nbn:se:kth:diva-838 (URN)992-740741-6 (ISBN)
Presentation
(English)
Note
QC 20100415 NR 20140804Available from: 2000-09-26 Created: 2000-09-26 Last updated: 2010-04-28Bibliographically approved

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