蚯蚓处理污泥的环境适应性

Environmental Adaptability of Earthworm in Sludge Treatment

摘要:

研究了不同食料、不同含水质量分数、不同温度条件下蚯蚓处理生物膜污泥的生理生态状态变化，并分析了影响蚯蚓处理污泥的因素.结果表明，蚯蚓对生态滤池生物膜污泥具有较好的适口性，实验室条件下在生物膜污泥中日增重平均值为0.025 1~0.039 1倍.含水质量分数为12%~18%、温度为15~25 ℃的石英砂为介质的生物膜污泥为蚯蚓的理想生存条件.蚯蚓呼吸率的变化趋势与日增长倍数趋势基本吻合，温度是影响蚯蚓呼吸率的重要因子，当食料充足时，25 ℃条件下蚯蚓的呼吸率高于15 ℃条件下的呼吸率，温度过低(5 ℃)或者

Abstract:

A study is made of the physiological and ecological changes of earthworms treating biofilm sludge with different kinds of food,moisture contents and temperatures,and factors influencing sludge treatment as well.The results show that earthworms grow up quickly as they enjoy biofilm sludge with an average increase about 2.51%~3.9% in the weight per day.In the biofilm sludge with quartz sand medium,the ideal moisture content is 12%~18%,and temperature 15~25 ℃.The trend of changes of earthworms’ respiratory rate is basically consistent with that of the average gained weight.The temperature is an important factor to earthworms’ respiratory rate.When food is sufficient,earthworms’ respiratory rate in 25 ℃ is higher than that in 15 ℃,earthworms can not breathe normally when temperature is low (5 ℃),or high (35 ℃).