气升式内循环生物微胶囊流化床的结构设计及对氯苯酚废水处理

用海藻酸钠／壳聚糖／活性炭制备的微胶囊具有生物半透膜特性和很好的强度；以海藻酸钠／壳聚糖／活性炭微胶囊包裹一株从活性污泥中筛选的对氯苯酚优势降解菌；根据废水处理的要求和流体动力学原理设计了气升式内循环生物流化床的中试设备；实验表明，以制备的微胶囊作为气升式内循环生物微胶囊流化床中载体处理对氯苯酚废水处理最适宜条件：pH=7．0，温度为30-35℃，处理120mg／L的对氯苯酚废水时，微胶囊最佳载体投入量为15％，通气量为120L／h。

The Physical Design of the Air - lift Inner Circulation Biomicrocapsules Fluidized Bed and its Application in the 4 - chlorophenol Wastewater Treatment

The microcapsule prepared by alginate - chitosan - powder active - carbon （ SA - CA - PAC） had good behavior in semipermeability and membrane strength; A kind of target bacteria which had high performance in degrading 4 - chlorophenol was encapsulated in the SA - CA - PAC microcapsule; The fluidized bed on pilot scale was designed in term of request of wastewater treatment and the principle of hydrokinetics;The result showed the optimal conditions of degrading 4 -chlorophenol in the airlift inner circulation fluidized bed with the biomicrocapsules as the biological carrier was pH 7, temperature30-35℃, and the optimal volume of carrier and gas feed rate at the 4 - chlorophenol concentration of 120 mg · L^-1 were 15% and 120 L · h^-1.