摘要
以林芝市A^2/O工艺为例探讨了高海拔、极端水温造成的西藏污水处理特性。结果表明,污水DO含量受海拔、水温、HRT影响较大,随海拔和水温增大而减少,却随HRT增加而增加;当污水温度低于15℃时,处理后出水水质较难达到GB 18918-2002的1级B水质;较难以达标的水质指标为TP、NH_3-N;HRT与A^2/O工艺处理效果呈现正相关性,但HRT的变化对去除率的影响并不显著。
High altitude, extreme water temperature would cause many unique characteristics of wastewater, and the characteristic of wastewater treatment by A^2/O process in Linzhi was discussed. The results showed that, dissolved oxygen（DO） content of wastewater was affected by altitude, water temperature and HRT, DO decreased with the increase of altitude and water temperature, and increased with the increase of HRT. The treated effluent quality was difficult to achieve GB 18918-2002 first class B water quality when wastewater temperature was lower than 15 ℃. The water quality indexes of TP and NH3-N were difficult to reach the standard. HRT had a positive correlation with A^2/O process treatment effect, but the effect of HRT on the removal rate was not significant.
出处
《水处理技术》
CAS
CSCD
北大核心
2018年第2期93-96,共4页
Technology of Water Treatment
基金
西藏科技厅地区自然基金项目(2016ZR-15-35
2016ZR-NY-08)
西藏大学农牧学院雪域人才计划项目(2015XYD09
2015XYA01)
国家级大学生创新实验项目(2016DC-06-07)
校级大学生创新实验项目(2016XZ-09-12)
关键词
A^2/O工艺
海拔
水温
HRT
溶解氧
去除率
A^2/O process
altitude
water temperature
HRT
dissolved oxygen
removal rate
