摘要
调查南渡江铁在溶解相和颗粒相的分布,并开展实验探讨颗粒物和pH对铁测定的影响。南渡江下游总铁的变化范围从1.374到3.098 mg/L,跟浊度呈现较强的相关性(R2=0.8930)。溶解态铁的变化范围为0.043~0.072 mg/L,仅占总铁2%~3%。自然静置实验铁的浓度从1.550 mg/L降到0.043 mg/L,移除率达到93.1%。加酸静置实验表明加酸能促使颗粒态或胶体态铁析出到溶解相。
This study investigated the iron distribution between particulate and dissolved phases in Nadu River,and further conducted laboratory experiments to understand the effects of particles and pH on iron analysis. Total iron concentration in Nadu River varied from 1. 374 to 3. 098 mg / L,and showed a strong correlation with turbidity( R2= 0. 8930). Dissolved iron concentration varied from 0. 043 to 0. 072 mg / L,accounting for 2% ~ 3% of total iron. Iron concentration changed from initial value of 1. 550 mg / L to 0. 043 mg / L at the end of natural settling experiment,with removal rate of 93. 1%. The acidified settling experiment showed that lower pH enabled iron dissolve from the particulate and colloidal phases.
出处
《环境工程》
CAS
CSCD
北大核心
2015年第S1期194-197,共4页
Environmental Engineering
