Water quality improvement by water-lifting aerators

Abstract

This chapter presents the results of water quality improvement performed in three different types of Chinese reservoirs after the installation of water-lifting aerators and the improved equipment during the period of 2006–2013. The results showed that the technology of water-lifting aerators can effectively control the release of endogenous pollutants, inhibit algal blooms, remove volatile contaminants (VOC), and reduce the pollution load in reservoirs. Compared to the same conditions, the algae can be reduced by 75–90 %, ammonia can be reduced by 69–95 %, TP can be reduced by 63–97 %, Fe/Mn can be reduced by 67–90 %, VOC can be reduced by 80–90 %, TN can be reduced by 19–32 %, and CODMn can be reduced by 16–26 %.