摘要
通过间歇试验考察了水质对中空纤维膜曝气效果的影响。结果表明,随着水中有机物和其他杂质的增加,膜曝气的氧总传质系数(KLa)和饱和溶解氧(cs)的浓度不断下降,KLa由清水时的0.01853min-1降到COD含量为900mg/L时的0.0126min-1;cs值由12.54mg/L下降为10.04mg/L。对于池塘水,其KLa和cs下降幅度超过同等COD浓度的人工配水,这可能与池塘水质的复杂性有关。
Batch tests were conducted to evaluate the influence of water quality on hollow-fibre membrane aeration performance. The results show that the overall mass transfer coefficient （ KLa ） and saturated dissolved oxygen （cs） of membrane aeration system are decreased with increasing of organic and soluble substances. The KLa is decreased from 0.018 53 min^-1 in clean water to 0.012 6 min^-1 in synthetic wastewater with COD concentration of 900 mg/L. The cs is decreased from 12.54 mg/L to 10.04 mg/L. In the case of pond water, lower values of KLa and cs are obtained compared with the synthetic wastewater of similar COD concentration, and this may be related to the complexity of pond water quality.
出处
《中国给水排水》
CAS
CSCD
北大核心
2008年第23期44-47,共4页
China Water & Wastewater
基金
国家"十一五"科技支撑计划项目(2006BAB17B04)
广东省水利科技项目(粤水科[2006]122号2006-21)
深圳市南山区科技计划项目
关键词
膜曝气
氧总传质系数
饱和溶解氧
污水处理
membrane aeration
overall mass transfer coefficient
saturated dissolved oxygen
