内电解法白腐菌生物处理活性染料染色废水

研究采用从自然界中采集 ,经分离、纯化 ,得到的对染料废水脱色效果较为明显的菌株 ,应用内电解法对染料废水进行预处理 ,以改善其可生化性之后 ,进行活性染料染色废水的生物处理实验。确定了最佳组合工艺条件 :内电解进水pH值为 3 5 ,停留时间 15min ,白腐菌纤维球载体固定化生物处理 ,进水pH值为 4 5 ,溶解氧浓度 >8mg L ,停留时间 12h ,脱色率达到近 10 0 % ,CODCr、BOD5去除率分别达到 90 7%及 94 8%。

TREATING DYEING WASTEWATER BY PROCESS OF INTERNAL ELECTROLYSIS AND WHITE-ROT-FUNGI

It is researched that the strains, which are collected from nature,and they possess obvious decolorising effect on dyeing wastewater after their separation and purification.The internal electrolysis is used to pretreat a dyeing wastewater in order to improve its biodegradability,after which a test of biotreatment is also given to the activated dyeing wastewater.The conditions of the optimal combination process are determined as below:pH of the influent for internal electrolysis is 3.5 with a HRT of 15min,whereas pH of the influent for biotreatment by the fiber ball of white-rot-fungi is 4.5 with a HRT of 12h and the concentration of DO is more than 8 mg/L.The decolorising rate is near to 100%,the removal rates of COD Cr and BOD 5 are up to 90.7% and 94.8% respectively when the dyeing wastewater is treated by the combined process.