摘要
In this study, laboratory scale experiments were conducted by using Sequencing Batch Reactor (SBR) activated sludge process to treat wastewater stream from a pharmaceutical factory Biological nitrogen removal can be achieved via partial nitrification and denitrification and its efficiency was above 99% at 23 ℃±1 ℃ The experimental results indicated that the nitrite oxidizers were more sensitive than ammonia oxidizers to the free ammonia in wastewater The ammonia was oxidized at pH 7 and 7 5 respectively, which suggested a critical free ammonia concentration of 0 2 mg·L -1 at which the nitrite oxidizers were inhibited.
In this study, laboratory-scale experiments were conducted by using Sequencing Batch Reactor (SBR) activated sludge process to treat wastewater stream from a pharmaceutical factory. Biological nitrogen removal can be achieved via partial nitrification and denitrification and its efficiency was above 99% at 23°C±1°C.. The experimental results indicated that the nitrite oxidizers were more sensitive than ammonia oxidizers to the free ammonia in wastewater. The ammonia was oxidized at pH 7 and 7.5 respectively, which suggested a critical free ammonia concentration of 0.2 mg·L-1 at which the nitrite oxidizers were inhibited.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2003年第10期1482-1485,共4页
CIESC Journal
基金
国家自然科学基金重点项目资助 (No 5 0 13 80 10 )~~
