污泥转移SBR工艺中EPS对生物除磷的作用

发布时间：2018-04-30 03:23

本文选题：污泥转移SBR工艺 + 胞外聚合物　；参考：《化工学报》2016年10期

【摘要】：采用新型强化生物除磷工艺——污泥转移SBR处理合成废水,探讨胞外聚合物(EPS)在工艺强化除磷过程中的作用。当污泥转移量为0、15%及30%时,污泥中的EPS含量分别为(108.14±9.68)mg·(g MLSS)?1、(128.17±1.45)mg·(g MLSS)?1和(123.35±22.98)mg·(g MLSS)?1;工艺的除磷率分别为82.14%±0.85%、96.35%±1.25%及98.99%±0.98%,反应末端EPS中TP含量占污泥中TP的比重分别为27.9%±2.55%、57.23%±2.33%和63.88%±2.87%。此外,污泥中EPS在该工艺的好氧吸磷过程中吸磷量分别为(2.04±0.32)mg·(g MLSS)?1、(5.90±0.38)mg·(g MLSS)?1和(6.00±0.52)mg·(g MLSS)?1,在污泥吸磷量中的贡献率均达到90%以上。研究结果表明:污泥转移SBR工艺中随着污泥转移量的增大有利于提高EPS中的磷含量,从而提升了工艺的除磷性能,EPS在该工艺的吸磷过程中起主要作用。但污泥转移对污泥中EPS含量影响不显著。
[Abstract]:A new enhanced biological phosphorus removal process, sludge transfer SBR, was used to treat synthetic wastewater. The role of extracellular polymer EPSs in the process of enhanced phosphorus removal was discussed. The EPS content of sludge was 108.14 卤9.68)mg / g MLSSS / g MLSS)?1 and 123.35 卤22.98)mg / g MLSSS / 1 respectively, and the phosphorus removal rate of the process was 82.14% 卤0.8596.35% 卤1.25% and 98.99% 卤0.98%, respectively. The percentage of TP in the reaction EPS was 27.9% 卤2.5557.23% 卤2.33% and 63.88% 卤2.87g in the sludge, and the content of TP in the sludge was 27.9% 卤2.5557.23% 卤2.33% and 63.88% 卤2.87g respectively, when the sludge transfer rate was 0.15% and 30wt%, the content of TP in the reactive EPS was 27.9% 卤2.5557.23% 卤2.33% and 63.88% 卤2.87g, respectively. In addition, the phosphorus uptake of EPS in sludge during aerobic phosphorus uptake was 2.04 卤0.32)mg / g MLSSS (5.90 卤0.38)mg / g MLSS)?1) and 6.00 卤0.52)mg / g (MLSSS / 1), respectively, and the contribution rate in the sludge phosphorus uptake was over 90%. The results showed that the phosphorus content in the sludge transfer SBR process was increased with the increase of the sludge transfer amount, and thus the phosphorus removal performance of the process was enhanced. EPS played a major role in the phosphorus absorption process of the process. However, the effect of sludge transfer on EPS content in sludge was not significant.
【作者单位】：苏州科技大学环境科学与工程学院;苏州科技大学环境生物技术研究所;苏州市环境应急与事故调查中心;
【基金】：江苏省高校自然科学研究重大项目(14KJA610001) 江苏省“333”学术带头人培养工程资助项目(331491201) 江苏省优势学科资助项目水处理材料与技术协同创新中心资助
【分类号】：X703

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