脱水
化学
过硫酸盐
零价铁
活性污泥
过滤(数学)
核化学
色谱法
污水处理
废物管理
生物化学
有机化学
吸附
统计
工程类
催化作用
岩土工程
数学
作者
Wanjun Duan,Jingfeng Gao,Wenzhi Zhang,Yuwei Wang,Jie Liu
标识
DOI:10.1016/j.biortech.2020.123509
摘要
Two sludge conditioning modes (nanoscale zero valent iron modified by Ginkgo biloba L. leaf (G-nZVI)/sodium persulfate (PS) conditioning with different ratios (1:0, 1:0.1, 1:1 and 1:10) and G-nZVI/PS conditioning with continuous addition) in reducing the specific resistance of filtration (SRF) and removing antibiotic resistant genes (ARGs) were investigated. After 3 min, the SRF values decreased in following order: 2.45 × 108 m/kg (1:10) > 5.95 × 106 m/kg (1:0.1) > 3.72 × 106 m/kg (1:0) > 4.92 × 105 m/kg (1:1). In the continuous addition (1:1), the SRF value decreased from 1.04 × 108 m/kg to 6.47 × 106 m/kg at 9 min. Removal efficiency of ARGs was 2–6 orders of magnitude and no regeneration of ARGs was observed in sludge and water phase. When treated samples were incubated for 36 h, dominant microflora was negatively correlated with ARGs. This study revealed persulfate treatment could achieve dewatering and remove ARGs, simultaneously.
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