CaoFengfeng,XuMing,WangJun,et al.Optimization of O3+DNBF Process for Enhanced Denitrification Based on Response Surface Methodology[J].China Water & Wastewater,2026,42(15):67-72.
基于响应面法优化O3+DNBF工艺强化脱氮研究
- Title:
- Optimization of O3+DNBF Process for Enhanced Denitrification Based on Response Surface Methodology
- Keywords:
- ozone catalytic oxidation; denitrification biofilter; response surface methodology; enhanced denitrification; secondary effluent
- 摘要:
- 为优化臭氧催化氧化（O3）＋反硝化生物滤池（DNBF）组合工艺处理二级出水过程中强化脱氮的关键运行条件，通过单因素试验分别研究了臭氧投加量、水力停留时间（HRT）及温度对系统主要污染物去除效果的影响，并确定最佳工况。在此基础上，采用响应面法（RSM）分析上述三种因素对O3＋DNBF工艺去除TN的影响，得出优化运行条件与去除率的模型预测值，并验证了TN去除率实测值与预测值的相对误差。结果表明，单因素试验中臭氧投加量为15 mg/L、HRT为6 h、温度为22 ℃时系统脱氮效果最好。响应面分析表明，三种因素对TN的去除交互影响显著，模型拟合回归方程得出优化运行条件如下：臭氧投加量为16 mg/L、HRT为6 h、温度为23 ℃，TN去除率预测值为32.56%。平行验证试验结果表明，TN平均去除率为32.94%，相对误差仅为0.38%。可见，采用响应面法建立模型优化O3+DNBF工艺深度处理二级出水效果的方法可靠，实现了对总氮的强化去除，且出水水质满足《城镇污水处理厂污染物排放标准》（GB 18918—2002）一级A标准。
- Abstract:
- To optimize the key operating conditions for enhancing denitrification in the treatment of secondary effluent using the ozone catalytic oxidation (O3) combined with denitrification biofilter (DNBF) process, single-factor experiments were conducted to investigate the effects of ozone dosage, hydraulic retention time (HRT), and temperature on the removal of major pollutants, and to determine their respective optimal operating conditions. On this basis, response surface methodology (RSM) was employed to analyze the effects of the above three factors on TN removal in the O3+DNBF process, and the predicted values of the optimized operating conditions and removal rate were obtained from the model. The relative error between the actual and predicted TN removal rates was calculated. The results showed that, in the single-factor experiments, the system achieved the best denitrification performance at an ozone dosage of 15 mg/L, HRT of 6 h, and temperature of 22 ℃. Response surface analysis revealed that the three factors had a significant interactive effect on TN removal. The fitted regression equation from the model optimized the operating conditions as follows: ozone dosage of 16 mg/L, HRT of 6 h, and temperature of 23 ℃, with a predicted TN removal rate of 32.56%. The parallel validation experiments showed that the average TN removal rate was 32.94%, with a relative error of only 0.38%. It was evident that the application of response surface methodology to establish a model for optimizing the O3+DNBF process for advanced treatment of secondary effluent was reliable, achieving enhanced removal of total nitrogen, with the effluent quality meeting the first level A criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002).
相似文献/References:
[1]高伟楠.高出水标准下的再生水厂COD深度处理工艺比选[J].中国给水排水,2020,36(10):58.
[2]姚通,余华东,郑元武,等.宁波某化工园区污水厂一级A升级改造工艺中试[J].中国给水排水,2020,36(19):72.
YAO Tong,YU Hua-dong,ZHENG Yuan-wu,et al.Pilot-scale Test on First Grade A Upgrading and Reconstruction of a Wastewater Treatment Plant in a Chemical Industrial Park in Ninbo City[J].China Water & Wastewater,2020,36(15):72.
[3]杨清,郭淑琴,陈伟楠.准Ⅳ类出水标准下天津咸阳路污水处理厂的迁建提标设计[J].中国给水排水,2021,37(12):88.
YANG Qing,GUO Shu-qin,CHEN Wei-nan.Design of Relocation of Tianjin Xianyanglu Sewage Treatment Plant Upgraded to Quasi-Ⅳ Standard[J].China Water & Wastewater,2021,37(15):88.
[4]杨洪新,马文静,姜雪松,等.臭氧催化氧化工艺设备优化中试研究[J].中国给水排水,2021,37(21):89.
YANG Hong-xin,MA Wen-jing,JIANG Xue-song,et al.Pilot Study on Optimization of Ozone Catalytic Oxidation Process and Its Equipment[J].China Water & Wastewater,2021,37(15):89.
[5]冯仕训,张万里,程明涛,等.太湖流域一级保护区内某污水厂提标改造工艺设计[J].中国给水排水,2022,38(6):76.
FENGShi-xun,ZHANGWan-li,CHENGMing-tao,et al.Design of a Wastewater Treatment Plant Upgrading and Reconstruction Process in the First-grade Protection Zone of Taihu Lake Basin[J].China Water & Wastewater,2022,38(15):76.
[6]杨淇椋,宋凤鸣,古伟,等.反硝化生物滤池+高效气浮工艺用于准Ⅳ类提标改造[J].中国给水排水,2023,39(12):125.
YANGQi-liang,SONGFeng-ming,GUWei,et al.Application of Denitrifying Biofilter and High-efficiency Air Floatation in Upgrading of a WWTP for Quasi-Ⅳ Standard[J].China Water & Wastewater,2023,39(15):125.
[7]苏三宝,尚红超,李春红,等.臭氧催化氧化/BAF深度处理高含硫气田采出水[J].中国给水排水,2023,39(17):106.
SUSan-bao,SHANGHong-chao,LIChun-hong,et al.Catalytic Ozonation/Biological Aerated Filter Combined Process for Advanced Treatment of Effluent from High Sour Gas Field[J].China Water & Wastewater,2023,39(15):106.
[8]于华芹,石伟,徐会君,等.Co-Mn/γ-Al2O3催化剂的制备及其催化性能[J].中国给水排水,2023,39(17):113.
YUHua-qin,SHIWei,XUHui-jun,et al.Preparation of Co-Mn/γ-Al2O3 Composite Catalyst and Its Catalytic Performance[J].China Water & Wastewater,2023,39(15):113.
[9]彭锦玉,李振邦,张坤乾,等.前置臭氧-生物流化床工艺用于水厂提质改造[J].中国给水排水,2024,40(12):94.
PENGJin-yu,LIZhen-bang,ZHANGKun-qian,et al.Application of Pre-ozone and Biological Fluidized Bed in Updating and Transformation of Waterworks[J].China Water & Wastewater,2024,40(15):94.
[10]曾超,刘影,陈圆,等.某再生水厂两期脱氮除磷工艺设计及效能分析[J].中国给水排水,2024,40(18):64.
ZENGChao,LIUYing,CHENYuan,et al.Process Design and Efficiency Analysis of Nitrogen and Phosphorus Removal in Two Phases of a Reclaimed Water Plant[J].China Water & Wastewater,2024,40(15):64.