蚯蚓生物滤池启动驯化阶段蚯蚓生理生态适应性研究  

Ecological and Physiological Adaptabilities of Earthworm in Biofilter Under Domestication Stage

作　　者：杨健[1] 邓德汉[1] 陈巧燕[1] 赵丽敏[1] 易当皓[1] 

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092

出　　处：《环境科学》2009年第8期2358-2365,共8页Environmental Science

基　　金：国家科技支撑计划世博科技专项(2007BAK27B05)

摘　　要：研究了蚯蚓生物滤池在启动驯化阶段蚯蚓的生理生态状态变化,并分析了相关影响因素.结果表明,由于受到自然环境和滤池环境的胁迫,蚯蚓投加后数量和生物量出现逐渐下降的趋势.一旦条件适宜,幼蚓的孵化可以补充滤池内蚯蚓的数量和生物量.随着温度的升高,周边的蚯蚓逐渐向布水区移动,投加58d后蚯蚓分布较为均匀.蚯蚓密度和含水率之间存在着极显著负相关.温度、日平均降水量和降水强度积分3个自然影响因子对蚯蚓各生态指标的影响均不显著.温度低于15℃时,蚯蚓呼吸率变化较为敏感,出现大幅度下降,不利于蚯蚓代谢处理污水污泥.在一定范围内,采取措施提高滤池内蚯蚓的密度并使蚯蚓分布均匀将提高污泥的处理效率.Ecological and physiological adaptabilities of earthworm in biofilter under domestication stage is presented, as well as related factors. The results show that, due to the coercion of natural and filter environment, the number and biomass of earthworms present a gradual downward trend after added. But once the conditions become appropriate, hatching of larvae could add the number and biomass of earthworm in the filter. With the increase of temperature, circumjacent earthworms gradually move to the water distribution area, 58 days later earthworms distribution become more uniform. Earthworm density and moisture content exist the significant negative correlation. Temperature, precipitation and rainfall don＇t affect the ecological indicators of earthworms significantly. When temperature is below 15℃ , the earthworms＇ respiratory rate become more sensitive and decline significantly which is not conducive for earthworms treatment of sewage sludge. In a certain range, it＇s effective for improving the efficiency of sludge treatment to increase the density of earthworms and distribute earthworms evenly.

关 键 词：蚯蚓生物滤池 驯化阶段 生态适应性 生理适应性 

分 类 号：X703.1[环境科学与工程—环境工程]