【摘要】 利用AO-MBR中试装置开展同步启动研究,拟为新建MBR污水处理工程同步启动提供理论依据。试验结果表明,冬季同步启动期间的微生物增殖较慢,AO-MBR装置启动过程较慢,反应器运行后期出水中COD和TP均优于一级A排放标准,但出水NH₃-N和TN浓度较高。另外,在未投加化学除磷药剂的情况下,同步启动期间反应器出水TP浓度均处于较低水平,这主要是由于微生物的增殖活动同化了大量的磷元素。选取运行期间的某个时间段,经过理论计算得知,同步启动期间微生物同化作用去除的磷元素占总去除量的75.6%。建议通过增大曝气量等方式营造适宜硝化菌生长的环境,提高系统的硝化效果,为AO-MBR冬季高效同步启动提供技术支持。更多还原

【Abstract】 Synchronous start-up study was carried out with AO-MBR pilot plant. The findings were expected to provide theoretical support for the quick start of MBR project for wastewater treatment. The results showed that microbial proliferation and the start-up process of AO-MBR were slow during synchronous start-up period in winter. COD and TP concentration in effluent was superior to the primary A emission standard, while NH₃-N and TN concentration in effluent was higher. In addition, in the absence of chemical phosphorus removal agent, TP concentration in effluent during simultaneous start-up was low, which was mainly due to the fact that microbial activities assimilated lots of phosphorous. In a certain period of operation time, the removal of phosphorus by microbial assimilation during synchronous start-up accounted for 75.6% of the total removal of phosphorus. It was recommended to increase the amount of aeration to improve nitrification, which could provide technical support for synchronous start-up of AO-MBR in winter.更多还原