Abstract
Background
Environmental policies should be developed in a contextual decision-making process regarding local environmental concerns emphasizing the economic, technical, social and institutional considerations. Establishing emission limit levels, especially in the industrial sector, is one of the most problematic environmental issues in developing countries, for which it is essential to include several criteria that reflect their country-specific constraints and capacities. Since Best Available Technology (BAT) is acknowledged to be the reference element for sustainable development and a basis for Emissions Limit Values (ELVs), the objective of this study is to present a reliable methodology for establishing ELVs thresholds with an emphasis on the BAT concept for national regulation at the sector level.
Methods
A hybrid fuzzy multiple-criteria decision-making (FMCDM) process, consisting of the Analytic Hierarchy Process (AHP) and fuzzy Technique for Order of Preference by Similarity to Ideal Solution (fuzzy TOPSIS) method, is structured to aggregate the different criteria and rank different ELV alternatives in this complicated evaluation. In order to use the most profound knowledge and judgment of a professional expert team, this qualitative assessment highlights the importance of supportive information.
Results
The results obtained indicate that experts have considered the country-specific information as a reliable reference in their decisions. Among different key evaluation criteria in effluent standard setting, the highest experts’ priority is “Environmental protection”. For both the conventional and toxic pollutants, the influence of all other criteria namely “Economic feasibility”, “Technology viability” and “Institutional capacity”, as constraining criteria in developing countries, have not reduced the responsibility towards the environmental objectives. In ELVs ranking, experts have made their decisions with respect to the specific characteristics of each pollutant and the existing capacities and constraints of the country, without emphasizing on any specific reference.
Conclusions
This systematic and transparent approach has resulted in defensible country-specific ELVs for the Iron and Steel industry, which can be developed for other sectors. As the main conclusion, this paper demonstrates that FMCDM is a robust tool for this comprehensive assessment especially regarding the data availability limitations in developing countries.
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Abbreviations
- BAT:
-
Best Available Technology
- ELVs:
-
Emissions Limit Values
- FMCDM:
-
Fuzzy Multiple-Criteria Decision-Making
- AHP:
-
Analytic Hierarchy Process
- Fuzzy TOPSIS:
-
Fuzzy Technique for Order of Preference by Similarity to Ideal Solution
- DOE:
-
Department of Environment
- ISESs:
-
Industry-Specific Effluent Standards
- EPA:
-
Environmental Protection Agency
- BPT:
-
Best Practicable Control Technology Currently Available (BPT)
- CVI:
-
Content Validity Index
- EU:
-
European Union
- IPPC:
-
Integrated Pollution Prevention and Control Directive
- BAT-AEL:
-
BAT associated emission level
- BPT-AEL:
-
BPT associated emission level
- BREFs:
-
BAT reference documents
- DMs:
-
Decision-Makers
- WTTs:
-
Wastewater Treatment Technologies
- DL:
-
Detection Limit
- TFNs:
-
Triangular Fuzzy Numbers
- FPIS:
-
Fuzzy Positive Ideal Solution
- FNIS:
-
Fuzzy Negative Ideal Solution
- RC:
-
Relative Closeness.
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Acknowledgements
The authors would like to express their special thanks to all the experts who were involved in the survey for this research. Without their outstanding knowledge and experience along with their passionate participation and input, the survey could not have been successfully conducted. Also, the cooperation of Iran’s Department of Environment is highly appreciated.
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MM: prepared the initial proposal, inquired the data, conducted the statistical analysis, and wrote the draft. MB and AT: suggested the topic, commented on the proposal and methods, provided scientific support, edited and commented on the final draft. LA and NH: commented on the proposal and methods, supervised the research, edited and commented on the final draft. All authors read and approved the final manuscript.
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Mahjouri, M., Ishak, M.B., Torabian, A. et al. An integrated methodology for establishing industrial effluent limits in developing countries: Iran as a case study. J Environ Health Sci Engineer 16, 181–192 (2018). https://doi.org/10.1007/s40201-018-0306-6
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DOI: https://doi.org/10.1007/s40201-018-0306-6