城市剩余活性污泥直接饲养蚯蚓可行性研究

Feasibility Study on Earthworm Feed Directly on Excess Sludge

摘要:

采用箱式养殖法,用城市生活污水处理后的活性污泥直接饲养蚯蚓。试验结果表明:活性污泥直接饲养蚯蚓是可行的。其饲养条件是采用上投料时,新鲜污泥一次性投料厚度以小于30cm为宜,块状发臭污泥小于20cm为宜;采用下投料时,新鲜污泥一次性投料厚度以小于30cm为宜,块状发臭污泥不适宜蚯蚓生长。

关键词:蚯蚓; 剩余污泥; 直接饲养; 投料厚度; 处理

Abstract:

Raising earthworms in boxes with excess sludge is conducted.It is concluded that excess sludge is eatable to earthworms ,and feeding condition is≤30cm filling thickness with fresh excess sludge each time,≤20cm up-filling thickness with rotten-lumpy excess sludge each time.

Key words:Dealing with; Excess sludge; Earthworm; Raising directly; Filling thickness