An exergy analysis for a wastewater treatment plant - An estimation of the consumption of physical resources

被引：47

作者：

Hellstrom, D

机构：

[1] Division of Sanitary Engineering, Luleå University of Technology

[2] Division of Sanitary Engineering, Luleå University of Technology

来源：

WATER ENVIRONMENT RESEARCH | 1997年 / 69卷 / 01期

关键词：

biosolids; energy; exergy; nitrogen; organic matter; phosphorus; wastewater;

D O I：

10.2175/106143097X125173

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The objective of this article is to exemplify how an exergy analysis could be used to estimate the consumption of physical resources at a wastewater treatment plant (WWTP). The exergy analysis has been performed for Lulea WWTP in Northern Sweden. About 60 000 population equivalents are connected to the WWTP, which has mechanical and chemical treatment. Flows included in the analysis are the wastewater heat, precipitants and other chemicals, organic matter and nutrients in the wastewater and biosolids, and electricity used for operation and maintenance. One conclusion is that the value of the heat is overestimated in a conventional energy analysis. Also, the organic matter probably represents the largest technical exergy flow. It is not clear how the exergy value of nutrients should be estimated.

引用

页码：44 / 51

页数：8