UASB反应器高温处理酒精废液的研究

STUDY ON TREATING DISTILLERY WASTEWATER BY A UASB REACTOR AT THERMOPMILIC CONDITIONS

在θ＝53±1℃条件下，采用UASB用1mo培养出颗粒污泥,到运行结束时，污泥ρ（TS）为65·0g·L－1，SVI为14．0，Umax（CH4）为603．9mL·g－1·d－1，对颗粒污泥微生物类群数量和微观结构的分析表明，颗粒污泥具有活性和结构上的高效性；反映在处理效果上，使UASB具有高效稳定的运行结果：当t（HRT）24．0～18．4h，容积负荷大于20g·L－1·d－1时，甲烷含量约60％，COD去除率约91％，出水ρ（COD）1400～2000mg·L－1。

The UASB reactor produced a large number of granular sludge in one month at the thermophilic conditions(53±1℃). At the end of operation, in the reactor rs was 65.0 g·L-1, SVI was 14 .0, Umax(CH4) was 603.9mL·g-1·d-1. The amount of the metabolic bacteria groups and the microcosmic structure of the granular sludgewere studied. The results indicated that when HRT was 24.0～18.4 h and volumetric loading rate was over 20g·L-1·d-1, biogas yield rate was over 9 L·L-1·d-1, CH4 content of the biogas was about 60% and effluentCOD was 1 400～2 000 mg·L-1. The granular sludge was very activated and the UASB reactor was greatlyettective for the treating of distillery wastewater.