中国污水处理电耗分析和节能途径

随着中国污水处理量的增加和处理标准的提高,污水处理电耗引起了广泛重视。本文针对中国污水排放及处理情况进行调研,介绍了传统的污水处理方法和单元装置,并对国内污水处理电耗进行分析。在污水处理电耗分析基础上,指出污水处理合理设计的重要性,通过分析污水进水量及成分,选择合理高能效的处理工艺,能避免产生"大马拉小车"的能源浪费问题。其次指出了3种节电途径:改进传统污水处理方法中的工艺单元,如改进耗电较大的进水泵和曝气单元;改进工艺流程,如减少回流降低耗电;开发处理污水节能新技术、新方法,如人工湿地法、超导磁分离法。

Power Consumption of Wastewater Treatment and the Measures of Energy Saving

With the rapid increase of waste water treatment practice and the enactment of strict standards, the power consumption in wastewater treatment attracts more and more attention. In this paper, the wastewater discharge and treatment in China are reviewed. General methods and unit components of wastewater treatment are described and the power consumption is analyzed, which warrants a proper design. With an accurate analysis of wastewater volume and components, a proper process of high power efficiency is chosen to avoid the energy waste. Three ways to save power are proposed, that is, an improvement of unit components such as charging pump and aeration system, an improvement of the process flow such as removing the circumfluence, and the development of new techniques and methods of treatment such as constructed wetland wastewater treatment and superconducting high-gradient magnetic separationwastewater treatment.