摘要

   两种污泥调节模式（银杏叶（G-nZVI）/过硫酸钠（PS）修饰的纳米级零价铁，其比率不同（1：0、1：0.1、1：1和1:10）和G 研究了-nZVI / PS连续添加的条件），以降低过滤的比抗性（SRF）和去除抗生素抗性基因（ARG）。 3分钟后，SRF值按以下顺序降低：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）。 在连续添加（1：1）中，SRF值在9分钟时从1.04×108 m / kg下降到6.47×106 m / kg。 ARGs的去除效率为2–6个数量级，并且在污泥和水相中未观察到ARGs的再生。 将处理过的样品孵育36小时后，优势菌群与ARGs呈负相关。 这项研究表明，过硫酸盐处理可以同时脱水和去除ARGs

    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

    https://www.sciencedirect.com/science/article/abs/pii/S0960852420307811