摘要
水蚯蚓原位消解污泥过程中,曝气参数的设定十分重要。为评价曝气能耗对水蚯蚓消解污泥的影响并设定适宜的曝气量,研究污水处理系统耦合水蚯蚓后不同曝气梯度下的运行情况,并对耦合水蚯蚓前后的系统进行比较。结果表明:溶解氧最适范围为2～3 mg/L,曝气能耗约为0.19 kW.h/t;溶解氧高于3 mg/L时系统能效并无提高,且能耗增大。
During the process of in-situ sludge reduction by aquatic worms, aeration parameter is crucial. To assess the effect of energy consumption of aeration on the sludge reduction and determine an optimal aeration parameter, it was investigated the operations of aquatic worm reactor in different aerations as well as compared the treatment results of conventional reactor and aquatic worm reactor. Results revealed that the optimal concentration of dissolved oxygen was 2 ~ 3 mg/L and the corresponding power of aeration was around 0.19 kW. h/t. When the concentration of dissolved oxygen was above 3 rag/L, the aeration efficiency was not improved with only power consumption increased.
出处
《环境工程》
CAS
CSCD
北大核心
2013年第3期1-4,共4页
Environmental Engineering
基金
国家高技术研究发展计划(863)项目(2009AA064301)
关键词
水蚯蚓
原位消解污泥
曝气能耗
溶解氧
污水处理
aquatic worms
in-situ sludge reduction
power consumption of aeration
dissolved oxygen
wastewater treatment
