摘要
为提高煤矿生活污水营养型污染物处理效果,利用固定床生物膜反应器深度处理二级生化出水,分析污染物去除效果,获得水力停留时间、碳氮质量浓度比、固定床载体区高度等关键参数。结果表明,在水力停留时间为1.4 h、载体区高度为1.4 m、COD当量投加80 mg/L乙酸钠的条件下连续运行7 d,反应器出水COD、NH+4N、TN、TP最大质量浓度分别为17.8、0.83、3.67和0.53 mg/L,平均去除率分别为85.1%、65.8%、83.6%和45.3%。实验优化确定的最佳参数为水力停留时间为1.17 h、碳氮质量浓度比为4、载体区高度为1.2 m,脱氮除碳效果可达到我国煤矿生活污水处理厂高标准改造需求。
This paper seeks to improve the removal effect of nutritional pollutant of coal mine domestic sewage.The study involves treating two-stage biochemical effluent using the fixed-bed biofilm reactor;analyzing the pollutant removal effect;and obtaining the key parameters,carbon-nitrogen ratio and carrier area height.The results demonstrate that 7 day’s running in the presence of 1.4 h of hydraulic retention time,1.4 m of carrier area height and equivalent 80 mg/L of COD sodium acetate dosage provides the maximum mass concentration of 17.8,0.83,3.67 and 0.53 mg/L,respectively for COD,NH+4N,TN and TP in the reactor effluent,with the mean removal rates of 85.1%,65.8%,83.6%and 45.3%.The optimal parameters determined by experimental optimization are hydraulic retention time 1.17 h,carbon-nitrogen mass concentration ratio 4,and carrier height 1.2 m,enabling the nitrogen and carbon removal up to the high standard renovation requirements of coal mine domestic sewage treatment plants in China.
作者
郑彭生
杨建超
裴菲
高杰
Zheng Pengsheng;Yang Jianchao;Pei Fei;Gao Jie(Hangzhou Environmental Protection Research Institute of China Coal Technology & Engineering Group, Hangzhou 311201, China)
出处
《黑龙江科技大学学报》
CAS
2020年第4期361-365,共5页
Journal of Heilongjiang University of Science And Technology
基金
中国煤炭科工集团有限公司科技创新创业资金专项面上项目(2018-2-MS005)。
关键词
煤矿生活污水
固定床生物膜反应器
反硝化
碳氮质量浓度比
coal mine domestic sewage
fixed-bed biofilm reactor
denitrification
carbon-nitrogen mass concentration ratio
