固定化微生物技术在印染废水处理中的应用

Application of Immobilized Microorganism Technology for Printing and Dyeing Wastewater Treatment

印染废水由于色度高、水质变化大、生化性差等特点,是当前工业废水处理的难点和焦点之一。通过制备的固定化小球对模拟印染废水进行处理,实验结果表明,固定化微生物技术对印染废水处理的最佳条件为:pH值7,进水浓度300 mg/L,停留时间16 h,COD和色率的平均去除率分别在90%和70%以上。

The treatment of printing and dyeing wastewater is a problem of great difficulty and a focus of public attention because of its high color intensity, variation of water quality and poor biodeg- radation. The wastewaters were treated by immobilized microorganism technology. The experimental results showed that the average removal efficiencies of COD and color were over 90% and 70%, re- spectively, under the conditions of pH = 7, influent concentration = 300 mg/L and hydraulic reten- tion time （HRT） = 16 h.