摘要
通过对西北地区典型城市兰州市某居民区化粪池的调查,分析了生活污水通过化粪池后水质的变化及其对各污染指标的去除率.结果表明,生活污水经化粪池处理后,CODCr、BOD5、总氮、总磷、动植物油浓度均有降低,年平均去除率分别达到83.6%,51.1%,64.3%,68.2%,75.6%.污水的可生化性有明显提高.研究结果对于全面评价化粪池的功能特征,进而为化粪池的取舍提供技术参考.
Through investigating the septic tank of a residential area in the typical city of northwest region- Lanzhou,the change of sewage quality and the removal rate of pollutants indicators after passing septic tanks was analyzed. The results showed that, after the septic tanks treatment, the concentration of CODCr, BODs,nitrogen,total phosphorus, animal and vegetable oils in domestic wastewater reduced. The average annual removal rate of them reached to 83. 6%, 51.1%, 64. 3%, 68. 2%, 75. 6% respectively. And the biodegradation of wastewater was improved obviously. The results provide technical reference to the problem on setting or canceling the septic tank by comprehensively evaluating the functions and characteristics of septic tanks.
出处
《兰州交通大学学报》
CAS
2009年第1期118-120,124,共4页
Journal of Lanzhou Jiaotong University
关键词
化粪池
可生化性
处理能力
生活污水
septic tank
biodegradation
treatment capacity
domestic wastewater
