化工学报2013，Vol.64Issue(7)：2650-2655,6.DOI:10.3969/j.issn.0438-1157.2013.07.046
厌氧复合床处理模拟焦化废水的反硝化动力学
Denitrification dynamics of treating analog coking wastewater in upflow blanket filter
杜宪 1岳秀萍 1王孝维 1刘吉明 1米静1
作者信息
- 1. 太原理工大学环境科学与工程学院,山西太原030024
- 折叠
摘要
Abstract
In treating simulation coking wastewater in upflow blanket filter (UBF),addition of NaNO3 in water for simulating backflow of nitrification liquid results in simultaneous methanogenesis and denitrification,along with COD removal rate 94％,and NO3--N removal efficiency 99％.In denitrification dynamics research of the sludge at the bottom of the UBF,double-substrates Monod model was adopted to fit the test data obtained under conditions of nitrite accumulation,NO3--N+0.6NO2--N as the electronic acceptor of denitrification.The results show that there is a good correlation between the fitting curve and the experimental measurement.Then differential model based on Monod model was used to fit the change in the concentration of NO3--N and NO2--N respectively,relevant parameters obtained were as follows:The maximum specific degradation rate and half-saturation constant are 1.13 d-1 and 2.0 mg · L-1 for NO3-N,and 0.66 d-1 and 2.5 mg · L-1 for NO2--N.The half-saturation constant of organic substrate based upon NO3--N and NO2--N are 90.8 mg · L-1 and 96.8 mg · L-1.关键词
焦化废水/反硝化动力学/亚硝酸盐积累Key words
coking wastewater/ denitrification dynamics/ nitrite accumulation分类
资源环境引用本文复制引用
杜宪,岳秀萍,王孝维,刘吉明,米静..厌氧复合床处理模拟焦化废水的反硝化动力学[J].化工学报,2013,64(7):2650-2655,6.
