GAOPeng,WANGPanxin,ZHANGLei,et al.Efficiency and Stability of Catalytic Ozonation for Biochemical Effluent from Baijiu Brewing[J].China Water & Wastewater,2026,42(9):18-23.
臭氧催化氧化处理白酒酿造生化出水的效能与稳定性
- Title:
- Efficiency and Stability of Catalytic Ozonation for Biochemical Effluent from Baijiu Brewing
- Keywords:
- catalytic ozonation; biochemical effluent from Baijiu brewing; high hardness; scaling; catalyst
- 摘要:
- 针对臭氧催化氧化处理高硬度白酒废水过程中存在的催化剂层易结垢、板结等现象，通过序批/连续流实验，考察了臭氧催化氧化对有机污染物的去除效能及钙离子迁移对效能稳定性的影响。在臭氧投加量为200 mg/L、温度为25 ℃条件下，相较于单独臭氧氧化，催化体系对COD与TOC的去除率分别提升了15.9%和10.5%；连续流运行20 h后，钙离子在体系中的截留率达42.6%，导致COD去除率由38.5%降至26.7%，TOC去除率同步降低15.1%。化学洗脱及表征实验表明，约70.4%的截留钙通过吸附/沉淀富集于催化剂孔隙，但初期形成的CaCO3固体几乎全部从催化剂表面脱落形成悬浮颗粒。在工程中可结合反冲洗与前置软化或开发抗结垢工艺，以突破高硬度废水臭氧催化氧化应用瓶颈。
- Abstract:
- To address catalyst layer scaling and bed clogging during catalytic ozonation of high-hardness biochemical effluent from Baijiu brewing, this study employed comparative batch and continuous-flow experiments to evaluate organic pollutant removal efficiency and the impact of calcium ion migration on process stability. Results demonstrated that under optimal conditions (ozone dosage of 200 mg/L, temperature of 25 ℃), the catalytic system enhanced COD and TOC removal efficiencies by 15.9% and 10.5%, respectively, compared with sole ozonation. During 20-hour continuous operation, 42.6% of calcium ions were retained within the system, causing COD removal efficiency to decline from 38.5% to 26.7%, accompanied by a 15.1% reduction in TOC removal. Chemical elution and characterization revealed that approximately 70.4% of the retained calcium accumulated in catalyst pores via adsorption/precipitation, whereas initially formed CaCO3 solids detached almost entirely from the catalyst surface, forming suspended particles. For engineering applications, integrating backwashing with pre-softening or developing anti-scaling processes is recommended to overcome the engineering bottlenecks in catalytic ozonation of high-hardness wastewater.
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(9):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(9):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(9):89.
[5]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(9):106.
[6]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(9):113.
[7]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(9):94.