摘要
为解决炼油企业高浓度污水经"隔油+气浮+生化"的传统工艺处理时外排水难以稳定达标的问题,针对该类污水难生物降解的特点,采用"催化氧化+曝气生物滤池"组合处理工艺进行了中试研究。结果表明,利用·OH强氧化反应处理的污水经曝气生物滤池生化处理后,出水中COD、氨氮浓度、油浓度、悬浮物浓度的平均值分别为51.2,5.3,2.3,27 mg/L,COD降低率为83.1%,氨氮、油和悬浮物的平均去除率分别为80.1%,73.4%,61.6%,主要水质指标均达到国家一级排放标准。该技术不需改建炼油厂现有污水处理系统,可实现工业化应用。
Unbiodegradable organic fraction in refinery wastewater is unable to be treated by oil separator-air floatation-biological combined process to meet the discharge standard. The catalytic oxidationBAF combined process was utilized to treat this kind of non-biodegradable wastewater in a pilot plant. The results showed that after the waste water treated by catalytic oxidation followed by BAF treatment, the COD, NH3-N, oil and suspended solids （SS） in the effluent were 51.2, 5.3,2.3, and 27 rag/L, respectively, the removal rate of COD（Ave.） NH3-N（Ave.）, oil（Ave.） , SS（Ave.） reached to 83. 1%, 80. 1%, 73.4% and 61.6 %, respectively. The quality of effluent meets the discharge requirement of first grade national standard. It is concluded that this combined process can be used in the existing industrial device without the need for revamping the wastewater treatment system.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2016年第1期76-80,共5页
Petroleum Processing and Petrochemicals
基金
中国石油化工股份有限公司科技开发项目(308049)
