摘要
以地埋式一体化生物滤池为研究对象,分析了该工艺在低温条件下(<10℃)对农村生活污水中有机物及氮、磷的去除特性。研究表明,地埋式一体化生物滤池对COD的去除效果受温度的影响小,冬季低温条件下仍能维持较好的去除效果,对COD的平均去除率达73.3%。而该工艺的脱氮除磷效果受温度的影响显著,低温条件下对NH4+-N和TN的平均去除率仅分别为66.8%和48.1%。对于低温条件下处理农村生活污水的工艺而言,是硝化作用不完全导致了脱氮效率的下降,而溶解氧水平并不是限制硝化过程的主要因素。
Taking the buried integrated biofiher process as research object, the removal of organic matters, nitrogen and phosphorus from rural domestic sewage in this process at low temperatures （less than 10 % ） was studied. The results show that temperature has little influence on the removal efficiency of COD. A high COD removal rate of 73.3% is achieved in winter. However, temperature has a significant influence on the removal of nitrogen and phosphorus. At low temperatures, the removal rates of NH4^＋ - N and TN are only 66.8% and 48.1% respectively. The decrease in nitrogen removal efficiency is a result of incomplete nitrification and not DO.
出处
《中国给水排水》
CAS
CSCD
北大核心
2009年第11期33-36,共4页
China Water & Wastewater
基金
国家高技术研究发展计划(863)项目(2002AA601012-1A)
江苏省环保科技项目(2005012)
关键词
农村生活污水
生物滤池
低温
脱氮
rural domestic sewage
biofiher
low temperature
nitrogen removal
