Next Article in Journal
Performance Behavior of Participatory Water Institutions in Eastern India: A Study through Structural Equation Modelling
Previous Article in Journal
Performance Evaluation of Bias Correction Methods for Climate Change Monthly Precipitation Projections over Costa Rica
Open AccessArticle

Environmental Sustainability Assessment of a New Sewage Treatment Plant in China Based on Infrastructure Construction and Operation Phases Emergy Analysis

by Junxue Zhang 1,* and Lin Ma 2
1
School of Architecture, Southeast University, Nanjing 210096, China
2
State Key Laboratory of Biogeology and Environmental Geology, Environmental School, China University of Geosciences, Wuhan 430070, China
*
Author to whom correspondence should be addressed.
Water 2020, 12(2), 484; https://doi.org/10.3390/w12020484
Received: 30 January 2020 / Accepted: 7 February 2020 / Published: 11 February 2020
(This article belongs to the Section Wastewater Treatment and Reuse)
Due to excessive resource consumption and pressing environmental issues of the sewage treatment industry, there is extensive attention in China. Given the unique craft production process in the sewage treatment system, a series of integral emergy indicators have been used to evaluate the environmental sustainability based on infrastructure construction and operation stage emergy analysis. Taking a new typical sewage treatment plant as an example, this paper performed a case study. The results illustrate that (1) the infrastructure construction process emergy (approximate 92.6%) is more critical than sewage treatment process emergy; (2) nonrenewable resource is the primary factor for the emergy analysis, followed by energy (23.5%) and purchased supply (7%); (3) cement, steel, and gravel have dominant impacts on the nonrenewable resource emergy; (4) the emergy sustainability index is 0.001101, which displays weak environmental sustainability; (5) the unit emergy value (UEV) of the new sewage treatment plant is 3.40 × 1012 sej/m3; (6) sensitivity analysis results of the hypothesis demonstrate that nonrenewable resources have significant fluctuations (6.903%) while, for the indicators, emergy sustainability index (ESI) (4.8072%) has the most significant impact; and (7) wastewater is a major contributor. In light of comprehensive discussions, two positive measures are proposed in order to ameliorate the environmental sustainability. View Full-Text
Keywords: sewage treatment industry; emergy analysis; indicators; sustainability sewage treatment industry; emergy analysis; indicators; sustainability
Show Figures

Figure 1

MDPI and ACS Style

Zhang, J.; Ma, L. Environmental Sustainability Assessment of a New Sewage Treatment Plant in China Based on Infrastructure Construction and Operation Phases Emergy Analysis. Water 2020, 12, 484.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop