Microbial enzym and biomass responses:deciphering vermifiltration treating excess sludge fed continuosly using Eisenia fetida despite seasonal variations
首发时间:2014-09-02
Abstract:This paper reports on a seasonal pattern comparison of microbial enzymatic activities and biomass responses based on a conventional biofilter (BF, without earthworm) and a vermi?lter (VF, with earthworm, Eisenia fetida) for sewage sludge treatment fed continuously. The VSS reduction, viable cell number and enzyme activities were assayed to probe what made the VF operated stably. The results indicated that the earthworms' activities can further the volatile suspended solids (VSS) reduction with a 27.17% more than BF. Though the VF has a lower level in the viable cell number, the earthworms strongly improved the enzyme activities, such as INT- dehydrogenase, protease, β-glucosidase and amylase, which can explain the excellent performance of VSS reduction, compared with the BF. The correlation analysis documented that the VSS reduction was positively correlated with microbial enzyme activities. More importantly, the earthworm enabled the VF to avoid the detrimental influence of temperature, which guaranteed a stable performance during seasonal variations.
keywords: Microbial enzymatic activity Microbial biomass seasonal variations
点击查看论文中文信息
蚯蚓滤池中微生物量与微生物活性的季节变化解析
摘要:本文以普通蚯蚓生物滤池(BF)为参照,考察了投加赤子爱胜蚓的蚯蚓生物滤池(VF)连续式处理剩余污泥工艺的微生物的量与活性随季节的变化。结果表明:与BF相比,VF对剩余污泥中VSS的减量率平均提高27.17%。VF比BF的活的生物量量稍少,但其微生物具有比BF较高的活性。蚯蚓的活动明天提高了VF中脱氢酶,蛋白酶,葡萄糖苷酶和淀粉酶的活性。相关性分析表明,BF与VF的污泥减量与微生物酶活性具有很好的相关性,是污泥减量的机制所在。最后,VF能够减弱高温和低温对污泥减量的不利作用。
论文图表:
引用
No.4607574676064140****
同行评议
共计0人参与
勘误表
蚯蚓滤池中微生物量与微生物活性的季节变化解析
评论
全部评论0/1000