DNBF滤池在焦化废水深度脱氮中的研究  

Nitrogen Removal Performance of DNBF Filter in Coking Wastewater Advanced Treatment

作　　者：剧盼盼 刘洪泉 刘斌 陈卫江 JU Pan-pan;LIU Hong-quan;LIU Bin;CHEN Wei-jiang(Hebei think-do Water Treatment Technology Co.,Ltd.,Shijiazhuang Coking Water Treatment Technology Innovation Center,Hebei Coking Water Pollutant Control and Resource Innovation Center,Shijiazhuang 050000,China)

机构地区：[1]河北协同水处理技术有限公司,石家庄市焦化水处理技术创新中心,河北省焦化水污染物控制与资源化创新中心,河北石家庄050000

出　　处：《环境科技》2022年第1期28-31,35,共5页Environmental Science and Technology

基　　金：河北省重点研发计划项目(资源与环境创新专项,213736-02D).

摘　　要：根据焦化水质特性,采用自主开发的DNBF滤池小中试装置对焦化废水一级生化出水进行深度脱氮处理,重点考察了其启动方法、脱氮极限负荷、进出水TN成分变化、反洗周期和强度等因素,并在最佳条件下稳定运行,结果表明:当进水TN质量浓度为109~127 mg/L,在ρ(C)/ρ(N)为5、负荷(以NO_(3)^(-)-N计)为2.0 kg/(m^(3)·d)左右的条件下,出水TN质量浓度稳定在20 mg/L以内,且进、出水COD基本一致,DNBF滤池系统TN去除率为83.7%〜89.2%,NO_(3)^(-)-N去除率为94.8%~99.7%,在焦化废水行业具有较高的推广和应用价值。According to the characteristics of coking wasterwater,the advanced denitrification treatment of the first-stage biochemical effluent was carried out by using DNBF filter developed independently.The factors such as the start-up method,the ultimate load of nitrogen removal,the change of total nitrogen composition,and the backwashing scheme were investigated.Under the optimal conditions,when the TN concentration in the influent of the system was 109~127 mg/L,the carbon source according was C/N=5,and the denitrifying load was 2.0 kg/(m^(3)·d),the TN of the system effluent was stable below 20 mg/L,and the COD of which did not change significantly,the removal rate of TN and NO_(3)^(-)-N can reach 83.7%~89.2%and 94.8%〜99.7%,respectively.So it is worth of being spread in coking wastewater treatment.

关 键 词：焦化废水 DNBF滤池 总氮 硝态氮 

分 类 号：X7[环境科学与工程—环境工程]