Application of Life Cycle Analysis (LCA) in evaluating energy-consuming of Integrated Oxidation Ditch (IOD)

摘要

With the research on some critical technology going deeply, the problem of technology route and project approach for the saving energy & reducing consumption have become the focus of municipal wastewater treatment process. In this article, LCA (Life Cycle Analysis) is applied to identify and compare the energy consumption of each stage of different technologies in municipal wastewater treatment from the view of whole process. This is carried out after reviewing the condition of energy utilizing of typical technologies in China. And some measures are brought forward to improve the efficiency of energy utilizing. Integrated Oxidation Ditch (IOD) is taken as an example and the energy consumption from its raw and processed materials exploitation, construction, treatment and running, rebuilding to its discarding and removing is identified and quantified, which is also compared with traditional treatment process of wastewater and waste sludge in China. This study shows that application of the high-energy-efficiency aeration device and optimizing control operation are essential paths to improve the energy consumption of IOD during its life cycle. And LCA is an important foundation of improving products quality and a main measure of sales promotion for manufacturers in recent years .