碱性印染废水处理初步研究

Study on Treatment of Printing and Dyeing Wastewater

碱性印染废水比较难以处理,脱色、降低有机物和悬浮物含量是处理印染废水的关键,采用单一化学和絮凝方法不能达到好的效果,在条件试验中采用壳聚糖、活性炭、硅藻土、H2O2、O3等材料,发现硅藻对废水中的悬浮物具有较好吸附絮凝性能,臭氧的脱色和氧化有机物效果较好,采用臭氧—硅藻土组合工艺处理碱性印染废水具有较好的效果,脱色率达93.9%,COD下降85.3%,SS下降83.1%。

The printing and dyeing wastewater wastewater with high content of alkalis was difficult to degrade. Decolorizing, remove COD and SS were most important. The use of seperated chemical method or flocculation method cannot give good results of treatment. Chitin, active carbon, kieselguhr, H2O2 and O3 were used to find an effective treatment materials for printing and dyeing wastewater. It showed that ozone--kieselguhr process was one of best method. The results of the experiment showed colourity, COD and SS can been removed 93.9 %, 85.3 %, 83.1% respectively.