生物膜反应器中低氨氮浓度废水的亚硝化  

Nitrification of low NH_4^+-N concentration wastewater in biofilm reactor

作　　者：吴继滨[1,2] 沈耀良[1,2] 郭海娟[2] 

机构地区：[1]苏州科技学院江苏省环境科学与工程重点实验室,苏州215011 [2]苏州科技学院环境科学与工程学院,苏州215011

出　　处：《环境工程学报》2012年第7期2261-2264,共4页Chinese Journal of Environmental Engineering

基　　金：江苏省"333工程"课题--可持续性短程生物脱氮除磷工艺研究资助(06KJA61020)

摘　　要：在连续流生物膜反应器中通过控制DO、pH和HRT,对低氨氮浓度废水进行了亚硝化的实验研究。结果表明,在进水氨氮浓度为35～45 mg/L,温度为34℃的情况下,当DO=1.4～1.5 mg/L,pH=8.3,HRT=6 h时,氨氮的去除率与亚硝态氮的积累率均可达到80%左右,实现了较好的氨氮降解及稳定的亚硝态氮的积累。A study on nitrification of low NH4-N concentration sewage was performed in continuous flow biofilm reactor by controlling the pH, dissolved oxygen （DO） and hydraulic retention time （HRT）. The resultsshowed that under the conditions of temperature of 34℃ , the influent ammonia concentration of 35 - 45 mg/L, dissolved oxygen of 1.4 - 1.5 mg/L, pH of 8.3 and hydraulic retention time of 8 h, both NH~ -N removal effi- ciency and nitrite accumulation efficiency could reach about 80%. The better-efficiency removal of NH4＋-N and stable accumulation of nitrite can be achieved.

关 键 词：生物膜 低氨氮浓度废水 亚硝化 低溶解氧 

分 类 号：X703[环境科学与工程—环境工程]