摘要
通过热改性法制备镁盐改性活性炭(MgO-PAC)并用于处理嘉兴联合污水处理厂的生活与工业混合污水。通过SEM、XRD、FTIR和BET等手段对MgO-PAC材料进行表征,考察了对混合污水中COD、TP和NH_4^+-N的吸附去除效果。经改性后活性炭比表面积增大了121. 22m^2/g,最佳投加量为50 mg/L。在最佳投加量下,MgO-PAC对COD、TP、NH_4^+-N的去除率分别提高了11. 7%、54. 4%和17. 9%。MgO-PAC对COD、TP和NH_4^+-N的吸附更符合拟二级动力学方程。MgO-PAC材料为生活与工业混合污水的处理以及污水厂的提标改造提供了一定的参考。
Magnesium salt modified powdered activated carbon (MgO-PAC) prepared by thermal modification method was used to treat sewage from Jiaxing United Sewage Treatment Plant. The properties of MgO-PAC were characterized by SEM,XRD,FTIR and BET. The adsorption and removal of COD,TP and NH4+-N from sewage by MgO-PAC were studied. The results showed that the specific surface area of the MgO-PAC material was increased by 121. 22 m2/g,and the optimum dosage was 50 mg/L.Under the optimum MgO-PAC dosage,the removal rate of COD,TP and NH4+-N was increased by11. 7%,54. 4% and 17. 9%,respectively. The adsorption of COD,TP and NH4+-N by MgO-PAC was more consistent with the pseudo-second-order kinetic equation. MgO-PAC material provides new ideas for the treatment of domestic and industrial mixed sewage and upgrading of the wastewater treatment plants.
作者
王健
王学江
李静
景焕平
赵建夫
WANG Jian;WANG Xue-jiang;LI Jing;JING Huan-ping;ZHAO Jian-fu(State Key Laboratory of Pollution Control and Resource Reuse,School of Environmental Science and Engineering,Tongji University,Shanghai 200092,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2019年第1期20-24,共5页
China Water & Wastewater
基金
国家水体污染控制与治理科技重大专项(2017ZX07206-002)
关键词
活性炭
镁盐改性
混合污水
拟二级动力学方程
powdered activated carbon
magnesium salt modification
mixed sewage
pseudo-second-order kinetic equation
