正交实验法优化地下水的石灰软化—絮凝处理工艺

摘要

采用石灰软化-絮凝法处理华南地区部分地下水水样.在单因素实验的基础上进行正交实验,考察了Ca(OH)2投加量、PAC投加量、石灰反应时间及沉淀时间对处理效果的影响,确定最佳处理条件为:Ca(OH)2投加量220 mg.L-1、PAC投加量15 mg.L-1、石灰反应时间10 min、沉淀时间30 min.Ca(OH)2投加量是影响石灰软化-絮凝处理地下水的关键因素.%The lime softening-flocculation treatment of groundwater samples obtained from South-China was carried out.The influence of Ca(OH)2 dosage,PAC dosage,lime reaction time,and sedimentation time on the treatment efficiency were explored by the orthogonal experiment based on the single factor experiment.The optimal treatment conditions were determined as follows:Ca(OH)2 dosage 220 mg · L-1,PAC dosage 15 mg ·L-1,lime reaction time 10 min,sedimentation time 30 min.The key influential factor on lime softening-flocculation treatment of groundwater was Ca(OH)2 dosage.