摘要
以磁改性海泡石(Mms)为吸附剂,以汉中市某铅锌冶炼企业综合生产废水为处理对象,以多指标综合评分法为综合处理效果评价方法,考察了Mms对铅锌冶炼复合重金属污染废水的处理效果,通过正交试验极差分析可以得出,Mms处理重金属废水的的影响因素主次顺序为Mms投加量>pH值>反应时间t。最佳试验条件Mms投加量为3.5 g/L,pH=4,反应时间为60 min,此时Pb2+、Zn2+、Fe2+、Fe3+、As3+、Cu2+、Cd2+的去除率依次为:83.69%、98.82%、97.35%、99.17%、99.62%、89.18%、96.3%。同时对吸附饱和的Mms的再生性能进行了研究。
The wastewater of lead and zinc smelter in Hanzhong was treatmented,with magnetic modified sepiolite as adsorbent.The comprehensive treatment effect was assessmented by orthogonal test design and grading method for multi-index.The results showed that the influential extent is：the dosing quantity of Mms ＞ the pH ＞ the reaction time,the best combination is：the dosing quantity of Mms is 3.5 g/L,pH of wastewater is 4 and the reactiontime is 60 minutes.Then,the removal rates of heavy metal ions such as Pb2＋ 、Zn2＋ 、Fe2＋ 、Fe3＋ 、As3＋ 、Cu2＋ and Cd2＋ is 83.69％,98.82％,97.35％,99.17％,99.62％,89.18％ and 96.3％.At last,the regeneration performance of the adsorption saturation Mms was studied.
出处
《科学技术与工程》
北大核心
2013年第30期9153-9157,共5页
Science Technology and Engineering
基金
陕西省教育厅项目(11JK0760)
陕西省科技厅社发攻关基金(2011K17-03-10)
陕西理工学院科研计划项目(slgky12-29)资助
关键词
海泡石
改性海泡石
铅锌冶炼废水
吸附剂再生
sepiolite
modified sepiolite
lead and zinc smelter wastewater
regeneration of adsorbent
