Gongye shui chuli, 2022 为研究西安市北石桥污水厂的3组（6道）表曝DE氧化沟出水水质进一步提标改造的可行方案，以现有构筑物土建结构改动最小为出发点，表曝改底曝为前提，引申出维持现有双沟交替运行，以及将3组沟改为2组、三沟交替运行2种改造思路。在此基础上制作实验模型，模拟将表曝DE氧化沟改为底曝，并对改底曝后的氧化沟分别进行双沟和三沟交替运行的小试实验。研究发现，改为底曝后，双沟、三沟交替模式下系统均能稳定运行，同等条件下出水各项指标均小于改造前。之后再加装MBBR填料 ...
张琦 +5 more
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Gongye shui chuli胞外聚合物（Extracellular polymeric substances，EPS）的资源化回收已经得到了广泛研究，但关于剥离EPS后污泥就地回用至污水生物处理系统的研究甚少。通过对剥离黏液层改性后的污泥进行考察发现，改性后的污泥仍具有良好的微生物活性，具备较好的底物降解能力；且相较于原泥，改性污泥的胞外蛋白质与胞外多糖质量比〔m（PN）/m（PS）〕由1.37提升至1.84，Zeta电位绝对值降低了25.97%，絮凝性能提升，因此改性污泥可回用于污水生物处理系统，并改善其性能。进一步地 ...
上官一将 +4 more
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