摘要
为实现高氨氮猪场养殖废水高效脱氮处理,针对猪场废水中尿素(主要源于猪尿液)水解过程伴随着污水pH值的变化现象,采用序列间歇式活性污泥法(SBR)处理某猪场养殖废水,在常温(20℃)、非限制溶解氧的条件下,考察了pH值、曝气时间等因素对氨氮去除效果和短程硝化特性的影响。实验结果表明,pH值在7.0～9.5范围内亚硝酸盐积累率在75%～80%之间;长时间曝气并未对短程硝化造成影响;高质量浓度氨氮废水生物处理过程中,亚硝酸盐积累与进水pH值、游离氨(FA)及游离亚硝酸(FNA)有关。
In order to achieve high efficient nitrogen removal from high ammonium-nitrogen swine wastewater,sequencing batch reactor activated sludge process（SBR） was used to treat swine wastewater to the phenomenon which the urea（mainly from pig urine） hydrolysis of swine wastewater was accompanied by changes of pH value.Under conditions of normal temperature（20℃） and non-restricted dissolved oxygen,effects of pH value and aeration time on ammonium removal,characteristics of shortcut nitrification were studied.The results showed that nitrite accumulation rate was 75%～80% when pH value was 7.0～9.5.Shortcut nitrification would not affected by long-term aeration.In the biological treatment process of high ammonium-nitrogen wastewater concentration,the nitrite accumulation was related to levels of pH value,free ammonia（FA） and free nitrite（FNA） in influent.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2011年第10期181-185,166,共6页
Transactions of the Chinese Society for Agricultural Machinery
基金
"十一五"国家科技支撑计划资助项目(2009BADC2B)
黑龙江省重点科技攻关资助项目(GB08C203)
苏州科技学院<环境科学与工程>省重点实验室资助项目(Zd091204)
东北农业大学博士启动基金资助项目
关键词
猪场废水
PH值
短程硝化
SBR
Swine wastewater
pH value
Shortcut nitrification
Sequencing batch reactor activated sludge process
