固定化微生物法处理含酚废水的研究

Treatment of Phenol-containing Wastewater by Immobilized Microorganism.

选用从活性污泥中分离得到的降解酚活性较高的热带假丝酵母菌(Candida tropicalis),通过实验选出了一种较好的载体和合适的固定化条件,在自制的三相流化床反应器中,采用固定化徽生物法连续处理含酚配水,进水酚浓度为300ppm,出水酚浓度小于0.5ppm,与悬浮生物法(如活性污泥法)相比,酚的容积负荷可提高1倍以上,污泥发生量可减少90％。

Treatment of phenol-cotaining wastewater by immobilized microorganism has been studied systematically in this paper. For this purpose, a strain of Canida tropi-calis showing quite high phenol-degrading activity was separated from activated sludge. The immobilizing support and immobilizing conditions were selected through the experiments. The simulated wastewater containing 300 ppm phenol was treated in a self-made three-phase fluidized bed reactor filled with immobilized microorganism, and the outlet concentration of phenol was below 0.5 ppm. The volumetric loading rate of phenol increased by more than one time, and the amount of surplus sludge decreased by 90% as compared with those in traditional activated sludge method. These results show good prospect of immobilized microorganism in wastewater treatment.