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。
关键词:
大生活用海水,
海水盐度,
完全混合活性污泥法,
生物硝化,
脱氨氮
Abstract:
The effects of salinity variations, temperature and pH value on the removal efficiency of NH3—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 NH3—N drops.With the temperature increasing the removal efficiency of NH3—N is improved.The suitable pH value of nitrification is 8.0 ～ 8.5 when the seawater salinity is high in the wastewater.
Key words:
domestic seawater,
complete-mixing activated sludge process,
seawater salinity,
nitrification,
removal of NH3—N
中图分类号:
王静, 张雨山, 徐梅生. 海水盐度对完全混合活性污泥法氨氮去除率的影响研究[J]. 工业水处理, 2000, 20(4): 18-19.
WANG Jing, ZHANG Yushan, XU Meisheng. Effects of varying salinity on the removal efficiency of NH3—N in the complete-mixing activated sludge process[J]. INDUSTRIAL WATER TREATMENT, 2000, 20(4): 18-19.