生物法处理造纸废水的试验研究

Experimental Study on the Treatment of Papermaking Wastewater by Biological Method

造纸废水中含有木质素等难降解物质,有机物浓度高,会对生态环境造成严重污染。本文通过控制外部条件的单因素变化进行实验,分析处理前后造纸废水的CODCr和氨氮去除率,寻求最佳处理效果,确定出最佳条件,提高了造纸废水处理效率。结果表明,温度25℃,pH值7~8,菌种质量浓度0.08g/L,反应时间96h时处理效果最优。

Papermaking wastewater contains a large number of lignin,organic matter and other refractory substances,which will cause serious pollution to the ecological environment. In this paper,the removal rates of COD Cr and NH3-N in papermaking wastewater were analyzed by controlling the change of single factor of external conditions,so as to determine the best conditions for the optimum effect of papermaking wastewater treatment.The experiment results showed that the treatment effect was the best when the temperature was25 ℃,pH was 7~8,the mass concentration of bacteria was 0.08 g/L and the reaction time was 96 h.