摘要
采用中心岛式一体化OCO工艺处理模拟生活污水,考察了溶解氧（DO）、碳氮比（C/N）、水力停留时间（HRT）和pH值对其脱氮效率的影响。试验结果表明：在好氧区DO为2.0 mg/L左右,C/N为8.5左右,HRT为12 h左右,pH值为7.4-7.8时,该工艺具有较为理想的脱氮效果,达到85%。试验还表明,该工艺的一体化沉淀池具有沉淀效能高、抗水力冲击能力强的特点。
Based on the manual simulated domestic sewage as the treatment media, the influences of dissolved oxygen （DO）, carbon to nitrogen ratios （C/N）, hydraulic retention time （HRT） and pH value on nitro- gen removal were studied by the integral OCO process with the center-island settling tank. The experimental results show that the TN removal efficiency is satisfactory and achieves 85% when DO in the oxic area is about 2 mg/L, C/N ratios is about 8.5, HRT is 12 h, and pH is between 7.4 -7.8. This center-island settling tank of novel integral OCO process has high separating efficiency for solid-liquid and powerful resistance to hydraulic load shock.
出处
《环境工程学报》
CAS
CSCD
北大核心
2009年第10期1778-1782,共5页
Chinese Journal of Environmental Engineering
基金
广东省自然科学基金项目(8152500002000012)
广东省科技计划项目(2002C32106)
广东省教育厅自然科学研究项目(2001-0167)
关键词
一体化OCO工艺
中心岛沉淀池
溶解氧
碳氮比
水力停留时间
pH值
脱氮
integral OCO process
center-island settling tank
dissolved oxygen
carbon to nitrogen ratio
hydraulic retention time
pH value
nitrogen removal
