树脂厌氧附着膜膨胀床污泥特性研究

CHARACTERISTICS OF SLUDGE IN ANAEROBIC ATTACHED FILM EXPANTION BED WITH RESIN AS BIOFILM CARRIER

采用载体吸附法培养出高活性的生物膜颗粒污泥,并对连续运行期间的污泥浓度、生物膜活性及生物膜厚度等特性进行研究,以了解该工艺高效稳定运行的生物学机制。试验装置采用AAFEB反应器,投加模拟污水,裸载体为树脂(平均粒径0.45～0.60mm)。试验运行了320d,反应器内最大污泥浓度30.14g/L,最高容积负荷46kgCOD/m3·d,COD去除率80%～95%。

A biofilm particulate sludge with high activity was cultured by carrier adsorption method, and the charateristics of the sludge concentration,biofilm activity and thickness etc. during continuous operation were studied to understand the biological mechanism of highly effective operation of the process. The anaerobic attached film expansion bed （AAFEB） was adopted for the test with dosing simulated sludge and resin （average pore size of 0.45-0.60mm） as naked carrier. The test was carried out for 320; the maximum sludge concentration in the reactor, the highest volume load and COD removal rate were 30.15g/L, 46kgCOD/m^3·d and 80-95% respectively.