Growth characteristics of Aeolosoma hemprichi contributing on ezcess activated sludge reduction
(0) In order to stabilize the growth of A.hemprichi and minimize the sludge production through biological predation, A.hemprichi was inoculated in batch and continuous experiments to investigate the growth characteristics and the effect on sludge reduction in this study. Various available volatile suspended solid(AVSS) concentrations were obtained after the ultrasonic irridation on pre-sterilized sludge. It was found the density of A.hemprichi was proportionate to AVSS concentration. A.hemprichi reached the maximum density when AVSS concentration was more than 3000mg/L. No obvious difference was found between the initial specific growth ratio(μ) of A.hemprichi at various AVSS concentrations. When N0.5NL, μ decreased with the increase of A.hemprichi and Logistic model was adopted to fit the growth of A.hemprichi. The results indicated sludge reduction rate was correlated with the growth rate of A.hemprichi which got the maximum growth activities at the density of 300 ind./ml. SRT of 6～8days could control A.hemprichi at this optimum density.
A.hemprichi activated sludge predation sludge reduction Introduction
Biyu Song Xiaofei Chen
Department of Environment Science Wuhan University Wuhan, China
国际会议
上海
英文
2826-2829
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）