摘要
目前我国政府倡导的节能减排之艰巨任务不可避免地涉及到污水处理行业。从宏观运行上看,污水处理厂节能减排似乎应从曝气、回流、投药、泥量、消化等技术方面入手。实际上,对微观机理的认识更有助于这些技术措施的有效实施。为说明微观机理对污水处理厂节能减排的作用,首先从传统污水处理工艺能耗入手,剖析能耗与CO2排放总量的关系;其次,从污泥能量回收率及技术难易程度分析剩余污泥转化为能源的适用性技术;最后,以同步脱氮除磷机理为核心,通过实例以数学模拟方式着重说明实现反硝化脱氮除磷对污水处理厂节能减排的内在积极作用。
Due to a policy of energy saving and emission reduction emphasized in China, wastewater treatment plants （WWTPs） have to deal with the same task. From an operational angle, aeration, sludge return, chemicals dosing, sludge reduction, sludge digestion and so on seem to be all the technical approaches of energy saving and emission reduction in WWTPs. In practice, understanding the microcosmic mechanism is even more helpful to realize these technical approaches. To demonstrate the microcosmic mechanism of energy saving and emission reduction in WWTPs, the relationship between energy consumption and total emission of CO2 was analyzed by starting with conventional wastewater treatment processes. The applicable technologies of energy recovery from excess sludge were evaluated on the basis of recoverable energy efficiencies and technical/operational/managerial complexities. Taking the mechanism of simultaneous nitrogen and phosphorus removals as core, the inherent active effect of denirifying phosphorus and nitrogen removal on energy saving and emission reduction in WWTPs is demonstrated by an example of mathematical simulation.
出处
《中国给水排水》
CAS
CSCD
北大核心
2008年第4期89-94,共6页
China Water & Wastewater
基金
北京市可持续水与废物循环利用技术“学术创新团队”项目(BJE10016200611)
国家高科技研究发展计划(863)项目(2006AA06Z320)
关键词
污水处理厂
节能减排
甲烷
二氧化碳
反硝化脱氮除磷
数学模拟
WWTP
energy saving and emission reduction
methane
carbon dioxide
denitrifying phosphorus and nitrogen removal
mathematical simulation
