摘要
腐殖质与铁、锰形成的络合物吸附在滤料表面后有可能降低滤池的除锰效果,为此通过试验考察了天然有机物(NOM)对改性滤料接触氧化过滤工艺除锰效能的影响。结果表明,该工艺的除锰效果极佳,但天然有机物的存在会使除锰效率及过滤周期大幅度降低,而预投氯可保证改性滤料对锰的高效去除。有机物含量和投氯量对除锰效果有直接影响,应结合原水水质确定最佳投氯量。
The adsorption of the complex formed between humic compounds, iron and manganese may decrease the effect of filter for manganese removal. The influence of natural organic matters （NOM） on manganese removal by filtration with metal oxide-coated sand as media was investigated. Experimental results show that contact oxidation filtration is efficient in removing manganese in ground water. However, the presence of NOM has a negative influence on manganese removal. Addition of chlorine to influent can overcome the impact of NOM. c concentration and chlorine dose are the primary factors influencing the removal of manganese. The optimal dose of chlorine should be determined with raw water quality.
出处
《中国给水排水》
CAS
CSCD
北大核心
2006年第19期29-31,35,共4页
China Water & Wastewater
基金
国家自然科学基金资助项目(59825106)
关键词
除锰
改性滤料
天然有机物
氯
manganese removal
modified filter media
natural organic matters
chlorine
