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| BAF去除氨氮关键影响因素研究 | |
| 引用本文： | 王劼,宫艳萍,白莹,胡筱敏.BAF去除氨氮关键影响因素研究[J].环境科学与技术,2012,35(5):147-151. |
| 作者姓名： | 王劼 宫艳萍 白莹 胡筱敏 |
| 作者单位： | 1. 东北大学资源与土木工程学院,辽宁沈阳110004;国电东北环保产业集团有限公司,辽宁沈阳110014 2. 国电东北环保产业集团有限公司,辽宁沈阳,110014 3. 沈阳仙女河污水处理厂,辽宁沈阳,110011 4. 东北大学资源与土木工程学院,辽宁沈阳,110004 |
| 摘 要： | 为探讨曝气生物滤池去除氨氮的关键因素,选取沈阳仙女河污水处理厂(40万t/d)现场进行实地研究。通过测定不同条件下(pH、进水COD浓度、溶解氧、温度、水力负荷)的氨氮去除率,并进行主成分分析结果显示,影响BAF工艺脱氮的关键因素是温度、溶解氧和水力负荷。当温度在14~30℃之间时,氨氮的去除率一直维持较高,当温度低于14℃时,氨氮的去除率较低;随着溶解氧浓度的增大,氨氮的去除率也随之升高,当溶解氧增加到5.6 mg/L时,氨氮的去除率达到80%~90%,接近饱和状态;在水力负荷为3.08~4.15 m3/(m.2h)之间时,氨氮的去除率上升,超过该值,则氨氮去除率下降。 |
| 关 键 词： | 曝气生物滤池 氨氮 影响因素 |
Factors Affecting Ammonia Nitrogen Removal in BAF |
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| WANG Jie , GONG Yan-ping , BAI Ying , HU Xiao-min.Factors Affecting Ammonia Nitrogen Removal in BAF[J].Environmental Science and Technology,2012,35(5):147-151. | |
| Authors: | WANG Jie GONG Yan-ping BAI Ying HU Xiao-min |
| Institution: | 1(1.School of Resources and Civil Engineering,Northeast University,Shenyang 110004,China; 2.Guodian Northeas Environmental tern Protection Industry Group Co.Ltd,Shenyang 110014,China; 3.Shenyang Xiannvhe WWTP,Shenyang 110011,China) |
| Abstract: | BAF(biological aerated filter) system at Xiannvhe WWTP in Shenyang City was investigated about the factors affecting its efficiency of NH4+-N removal,which included pH,COD of influent,DO and temperature of the wastewater,as well as hydraulic load of the ABF.Using method of PCA(principal components analysis) to analyze the experimental data measured,results indicated that the main factors were DO and temperature of the wastewater and hydraulic load;meanwhile ranges of these affecting factors were presented,e.g.,NH4+-N removal maintained high when the temperature ranged between 14 ℃ and 30 ℃,but dropped when temperature was below 14 ℃,in addition,hydraulic load exceeding 4.15 m3/(m2·h) would lead to decreases of removal rate of NH4+-N. |
| Keywords: | biological aerated filter NH4+-N(ammonia nitrogen) removal rate hydraulic load |
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