厌氧-好氧-沉淀组合型(AOS)生物反应器处理餐厅含油废水

Treating Oil-Containing Restaurant Wastewater with Anaerobic-Oxidation-Sedimentation Bioreactor System

新型厌氧－好氧－沉淀（ＡＯＳ）组合型生物反应器是一种集厌氧消化UASB(Upflow Anaerobic Sludge Blanket)、 好氧降解（好氧生物膜接触反应器）及物理沉降为—体的高效反应器。本文对ＡＯＳ系统处理含油餐厅废水的操作可 行性作了广泛的研究。研究表明，ＡＯＳ反应器处理含油餐厅废水的效果远优于普通好氧生物膜CAB(Conventional Aerobic Bioreactor)反应器。

AOS system is a kind of novel bioreactor which is composed of an anaerobic digestion reactor (UASB with a filter under the separator──A section), an oxidation degradation reactor (aerobic biofilm reactor──O section) and a physical sedimentation tank (S section). The feasibility of AOS system to treat oil-containing restaurant wastewater was investigated in this paper. When HRT (Hydraulic Retention Time) was 0.8d, the COD and oil removal efficiency was 90.3% and 79.8%. The limited volume of SVRR and SBSUR in O section of AOS reactor reached 6.70 g.L'1.d-1 and 1 .37g.g-1 respectively. The results showed that the effects of AOS system were better than that of CAB (Conventional Aerobic Bioreactor) reactor.