中文关键词
好氧段碳源聚磷生物膜去除和富集微生物群落 英文关键词carbon source in aerobicphosphorus accumulating organisms (PAOs) biofilmremoval and enrichmentmicrobial community |
作者 | 单位 | E-mail | 徐林建 | 苏州科技大学环境科学与工程学院, 苏州 215009 苏州科技大学环境生物技术研究所, 苏州 215009 | 496860481@qq.com | 潘杨 | 苏州科技大学环境科学与工程学院, 苏州 215009 苏州科技大学环境生物技术研究所, 苏州 215009 江苏省环境科学与工程重点实验室, 苏州 215009 | panyang@mail.usts.edu.cn | 章豪 | 苏州科技大学环境科学与工程学院, 苏州 215009 苏州科技大学环境生物技术研究所, 苏州 215009 | | 冯鑫 | 苏州科技大学环境科学与工程学院, 苏州 215009 苏州科技大学环境生物技术研究所, 苏州 215009 | | 魏攀龙 | 苏州科技大学环境科学与工程学院, 苏州 215009 苏州科技大学环境生物技术研究所, 苏州 215009 | | 尤星怡 | 苏州科技大学环境科学与工程学院, 苏州 215009 苏州科技大学环境生物技术研究所, 苏州 215009 | |
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中文摘要 |
利用聚磷菌以循环交替O/A模式运行,对生活污水处理厂的主流工艺中实现磷酸盐的同步去除和富集,探究了好氧段碳源浓度对聚磷生物膜去除和富集磷酸盐性能以及生物膜中微生物种群结构的影响.结果表明,好氧COD质量浓度从200 mg·L-1降低到0 mg·L-1,吸磷速率提升1.29倍,出水磷质量浓度稳定在0.5 mg·L-1以下;释磷速率提升3.56倍,富集液磷酸盐质量浓度从27.125 mg·L-1升高到55.91 mg·L-1.微生物群落变化中,鉴定为聚磷菌的变形菌门(Proteobacteria)的含量增加约2倍,红环菌科(Rhodocyclaceae)和厌氧绳菌科(Anaerolineaceae)的富集效果分别提高了2.28和5倍.降低好氧段碳源浓度,有利于聚磷菌的筛选和富集,强化了好氧段磷酸盐的去除以及厌氧段磷酸盐的释放,获得了更高的磷酸盐富集液,并且为以资源回收为目的的未来城市污水处理厂提供降低好氧段碳源需求的理论基础. |
英文摘要 |
In a cyclic alternating O/A operation mode, phosphorus accumulating organisms (PAOs) can undertake phosphate removal and enrichment as the main process in wastewater treatment plants. The effects of the concentration of carbon sources during the aerobic stage on phosphate removal and enrichment performance of PAO biofilms, and the microbial population structure in the biofilms, were investigated. The results showed that the aerobic COD concentration decreased from 200 mg·L-1 to 0 mg·L-1, the phosphorus uptake rate improved by 1.29 times, the phosphorus concentration in effluent stabilized below 0.5 mg·L-1, the phosphorus release rate increased by 3.56 times, and the phosphate concentration in the circulating solution increased from 27.125 mg·L-1 to 55.91 mg·L-1. With respect to the change in microbial communities, the identification showed that the abundance of Proteobacteria increased by approximately two times, and the enrichment effects of Rhodocyclaceae and Anaerolineaceae increased by 2.28 and 5 times, respectively. Reducing the concentration of the carbon source in the aerobic section was beneficial to the screening and enrichment of PAOs, strengthening the removal of phosphate in the aerobic section and the release of phosphate in the anaerobic section. This resulted in an enriched phosphate solution. These observations provide a theoretical basis for future urban sewage treatment plants seeking to reduce their carbon demand. |
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