摘要
磷是城市污水中主要的污染物之一,也是导致水体富营养化的重要原因[1],若任由含磷废水直接排放将导致严重的水体污染。因此,近年来对污水中含磷化合物的排放提出了新标准[2],
Considering low cost and high efficiency of ferrous iron for phosphorous removal,ferrous iron was used for removing phosphorous in wastewater by oxidation.The efficiency,affecting factors and kinetics of the oxidation process of ferrous iron were studied in this paper.The results show that simultaneous oxidation of ferrous iron can improve significantly the efficiency of phosphorous removal by ferrous iron.When DO raise from 0 to 4 mg·L-1,the rate of phosphorous removal increases by 47% after 60 min.The rate increases first and then decreases with pH from 6.0 to 9.0.The optimal pH is 8.0.Both raise of temperature and initial concentration of ferrous iron can enhance phosphate removal.A series of basic data are provided for wide use of ferrous iron.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2013年第5期1840-1846,共7页
CIESC Journal
基金
国家水体污染控制与治理科技重大专项(水专项)(2008ZX07317-02)
住房和城乡建设部研究开发项目(2012-k7-18)~~
关键词
亚铁
磷去除
影响因素
动力学
ferrous iron
phosphate removal
reaction condition
kinetics