【摘要】 本文论述了容积为786.4m~3的生产性UASB反应器中温条件下处理柠檬酸废水的启动过程.当反应器稳定运行时,容积负荷为7.5～10kgCOD/(m~3·d),水力停留时间为38～49h,COD平均去除率达85%,出水COD≤2500mg/L.采用农村沼气池厌氧污泥和好氧活性污泥作为种泥(接种量均为6kgVSS/m~3)均可培养出颗粒污泥,并可实现快速启动.更多还原

【Abstract】 Start-up of a full scale UASB reactor with capacity of 786. 4 cubic meters to treat wastewater of citric acid production in mesophilic status was researched. In the steady operation of the reactor the daily volumetric loading is 7. 5-10 kg COD per cubic meter and hydraulic retention time 49 - 38 hours with average COD removal rate of 85%. An effluent of COD ≤ 2500 mg/l was obtained. Grained sludge pellets had been cultivated and quick start-up was completed by inoculation of either aerobic sludge floc from methane tank or aerobic activated sludge.更多还原