利用人工介质改善太湖水源地水质的研究

Study on Water Quality Improvement of Taihu Lake Water Source by Artificial Media

采用组合介质、弹性介质、无纺布介质等3种人工介质进行了改善太湖水源地水质的中试研究。结果表明,组合介质上的生物量及生物活性分别为(26.99±9.4)μgP/g和(127.13±79.4)μgTF/(g.h),均高于无纺布介质和弹性介质的,且其净化效果更佳,是较为适用的人工介质。组合介质通过富集微生物来净化水质,对微量有机物的去除效果明显。当HRT为7 d、组合介质的填充率为26.8%时,对TOC、CODMn、Chl-a、藻毒素的平均去除率分别为42.1%、22.5%、71.9%、67.9%。

A pilot study on improvement of Taihu Lake water quality was conducted by using three artificial media including the assembled medium, elastic medium and non-woven fabric medium. The resuits show that the biomass and bioactivity of the assembled medium are （ 26.99 ± 9.4 ） μgP/g and （127.13 ± 79.4） μgTF/（g · h） respectively, higher than those of the elastic and non-woven fabric media, with the optimal purification effect and application. The assembled medium purifies the water quality via enriching microbes, with evident removal effects of trace organic contaminants. When the HRT is 7 d and filling rate of the assembled medium is 26.8%, the average removal rates of TOC, CODMn, Chl-a and MC are 42.1%, 22.5%, 71.9% and 67.9% respectively.