摘要
采用完全混合活性污泥法研究了大生活用海水进入城市污水系统后 ,海水盐度对曝气池中NH3—N去除率的影响 ,同时研究了不同海水盐度下 ,温度、pH值的变化对NH3—N去除率的影响。实验结果表明 ,污水中海水占 1 2 %时 ,对曝气池中NH3—N的去除率无太大影响 ;但是当提高到 2 4 %时 ,NH3—N去除率有所降低 ;海水盐度达 36%时 ,NH3—N去除率明显降低。温度的升高 ,有利于去除NH3—N ,尤其是高海水盐度下 ,温度的影响更为明显。海水存在时 ,脱除氨态氮的最适宜pH值为 8 0～ 8 5。
The effects of salinity variations, temperature and pH value on the removal efficiency of NH 3—N have been investigated in the complete mixing activated sludge system after the domestic seawater flowed into the urban sewage system. With the salinity increasing the removal efficiency of NH 3—N drops. With the temperature increasing the removal efficiency of NH 3—N is improved. The suitable pH value of nitrification is 8.0～8.5 when the seawater salinity is high in the wastewater.
出处
《工业水处理》
CAS
CSCD
2000年第4期18-19,共2页
Industrial Water Treatment
基金
国家"九五"攻关项目! ( 1 996 91 6 0 1 0 3 )
关键词
海水盐度
活性污泥法
生物硝化
脱氨
城市污水
domestic seawater
complete mixing activated sludge process
seawater salinity
nitrification
removal of NH 3—N
