HRT、缺氧时间、好氧时间对碳、氮去除的影响研究

Experimental Research on the Optimal Operation Mode of Integrated Oxidation Ditch with Continuous Flow and Intermittent Aeration

通过正交试验考察了水力停留时间(HRT)、好氧时间与缺氧时间对连续流间歇曝气一体化氧化沟系统碳、氮脱除的影响,结果表明,缺氧时间是影响系统BOD5和TN去除率的最显著性因素,好氧时间对BOD5去除率也存在显著影响;在HRT8hr,好氧时间2hr,缺氧时间2hr的运行方式下,能够获得以下出水水质:BOD5<20mg/l,TN<20mg/l,BOD5去除率为85.2%,TN去除率为55.5%。

The influence of HRT, oxidic time and anoxidic time on the carbon and nitrogen removal of integrated oxidation ditch with continuous flow and intermittent aeration was studied by cross experiment method. The results show that the anoxidic time has the most distinct influence on removal ratio of BOD5 and TN in the system and the oxidic time has a distinct influence on BOD5 as well. When HRT, oxidic time and anoxidic time of the system is 8h, 2 h and 2 h respectively, the effluent quality and the removal ratio for BOD5 are <20 mg/l and 85.2% and for TN are <20 mg/l and 55.5% respectively.