好氧和厌氧条件下污水中多环麝香去除效果研究

Study on the Removal of Polycyclic Musk in Sewage under Aerobic and Anaerobic Condition

为了比较好氧、厌氧MBR工艺对污水中多环麝香的处理效果,通过改变不同的水力停留时间来考察生活污水中污染物COD、吐纳麝香(AHTN)和佳乐麝香(HHCB)的去除效果以及每个停留时间内水样中和泥样中两种麝香的浓度分布。结果表明,在好氧和厌氧条件下,污水中COD的去除率分别为82.49%和72.10%,HHCB的去除率分别为71.23%和68.97%,AHTN的去除率分别为53.89%和70.55%。随着水力停留时间的增加,好氧条件下水样中两种麝香去除速率在逐渐增加,而厌氧条件下水样中两种麝香的去除率在逐渐降低,说明厌氧条件下HRT的增大对两种麝香的去除作用在降低,得出好氧水解-MBR反应器比厌氧-MBR反应器对HHCB和AHTN的去除率更有效,说明好氧水解-MBR工艺在各方面均强于厌氧-MBR工艺。

In order to compare the effects of aerobic and anaerobic MBR process on the removal of polycyclic musk in wastewater, the removal efficiency of COD, AHTN and HHCB in wastewater and the distribution of the two kinds of musk in wastewater and sludge were investigated through changing the hydraulic retention time （HRT）. The results showed that the removal efficiencies of COD in wastewater were above 82.49% and 72.10% under the aerobic and anaerobic conditions respectively, and the HHCB removal rates were 71.23% and 68.97% and the removal rates of AHTN were 53.89% and 70.55%, respectively. With the increase of HRT, the removal rates of two kinds of musk in wastewater samples under the aerobic condition gradually increased, however the removal rates decreased under the anaerobic condition. It indicated that the increase of HRT un- der anaerobic conditions would inhibit the removal of the two kinds of musk. The aerobic reactor was more effective than the anaerobic reactor in re- moving the HHBC and AHTN. It was concluded that the aerobic hydrolysis-MBR process in all aspects was better than the anaerobic-MBR process.