摘要
为考察天然斜发沸石、页岩陶粒和石灰岩碎石曝气生物滤池的处理效能,利用模型试验对比分析3种填料滤池的氨氮及pH空间分布特征,探讨进水负荷及pH对3种滤池硝化效率的影响规律.结果表明,在较高的进水pH(pH>6.5)条件下,沸石BAF的氨氮去除能力优于石灰岩BAF和陶粒BAF.提高进水有机物负荷、氨氮负荷到一定程度将抑制曝气生物滤池的硝化效率,增加进水pH可有效提高3种填料BAF的氨氮去除率.沸石、陶粒和石灰岩曝气生物滤池均具有较好的有机物和悬浮物去除能力,沸石BAF和石灰岩BAF的硝化除氨效率优于陶粒BAF.石灰岩BAF能够很好地适应进水pH的变化,具有稳定的硝化效率,比较适于处理低pH和高氨氮负荷的污水.
A parallel pilot- scale study was carried out on treatment efficiency and nitrification properties of three biological aerated filters （BAF） filled with zeolite, ceramist and carbonate media, respectively. The distribution of ammonium nitrogen and pH value in the filter bed of the three BAFs and the influence of influent loading and pH on nitrification were also investigated. It was observed that the nitrification performance in zeolite BAF was better than that of carbonate BAF and ceramist BAF when the influent pH value was more than 6. 5. The nitrification in all three BAFs was inhibited when increased the influent organic matter and ammonia loading to a certain degree; and enhanced by increasing the influent pH value. Results show that all three BAFs have promising COD and SS removal efficiencies, and the nitrification performance in zeolite BAF and carbonate BAF is superior to that of ceramist BAF. The carbonate BAF is considered more suitable to treat the wastewater with higher ammonia concentration and lower pH value, which has stable nitrification efficiency and better adaptability to varied influent pH values.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2009年第2期57-60,65,共5页
Journal of Harbin Institute of Technology
基金
山东省优秀中青年科学家科研奖励基金资助项目(2005BS08008)
山东省自然科学基金资助项目(Y2006B39)
山东省教育厅科技计划项目(J06I01)
济南大学博士基金资助项目(B0501)
关键词
曝气生物滤池
硝化特性
PH
沸石
陶粒
石灰岩
biological aerated filter （BAF）
nitrification properties
pH value
zeolite
carbonate
ceramist
