A GIS-Based Method for Identification of Blindness in Former Site Selection of Sewage Treatment Plants and Exploration of Optimal Siting Areas: A Case Study in Liao River Basin

Abstract

With regard to environmental facilities, blindness and the subjectivity of site selection lead to serious economic, engineering and social problems. A proper siting proposal often poses a challenge to local governments, as multiple factors should be considered, such as costs, construction conditions and social impact. How to make the optimal siting decision has become a topical issue in academic circles. In order to enrich the framework of site selection models, this study combined GIS, AHP and Remote Sensing (RS) technologies to conduct siting suitability analysis of sewage treatment plants, and it was first applied in the Liao River basin in Jilin Province in China. The enriched model is able to reveal blindness in the former site selection of sewage treatment plants and explore optimal siting areas, involving an effective quantification method for summer dominant wind direction and urban stream direction. In a case study, it was found that local governments need to be cautious of the distance of sites from rivers and residential areas and the impact of these sites on downwind and downstream residents. Additionally, siting suitability has obvious regional characteristics, and its distribution varies significantly between towns. Huaide Town shows the largest optimal siting areas and can be given priority for the construction of new sewage treatment plants. This paper developed a more scientific approach to site selection, and the outcome can provide a robust reference for local governments.

Factors affecting the decision-making of appropriate sites for WWTPs

“…Distance from the population settlements (m) F1 (12,13,14,15,17,18,19,20,21,22,24,25,26,27,28,31) Distance from wells or groundwater (m) F2 (13,16,17,20,23,25) Distance from protected areas (m) F3 (16,19,20) Slope of site area % F4 (12,14,15,16,17,18,19,20,21,22,24,26,28,29) Distance from main and secondary roads (m) F5 (12,13,15,16,17,18,19,20,22,23,24,26,27,28,30,31) Distance from power transmission line (m) F6…”

Evaluation of Landfill Site Suitability Using GIS, Remote Sensing, and the Multi-Criteria Decision-Making (AHP) Approach, Ethiopia

“…Therefore, in order to avoid the undesirable adverse effects of the land ll on the environment; it should be selected as the proper land ll site. Consequently, careful consideration of siting criteria (constraints and regulations) set up by environmental agencies or local authorities should be employed for a suitable land ll site (Al-hanbali et al, 2011;Aslam et al, 2022;Liu et al, 2022).…”

Multi-Attention Network for Sewage Treatment Plant Detection

“…Based on the relevant information of sewage treatment plants, they can provide a reference for the selection of the living location of the relevant population or allow people to further enhance the protection awareness of water resources with better understanding. In addition, the information can also provide a reference for city managers for optimizing the layout of sewage treatment plants and for the scientific construction of cities [7].…”