脱氮除磷条件下MBR运行的最佳水力条件优化
Optimization of Optimal Hydraulic Conditions for MBR Operation Under Nitrogen and Phosphorus Removal
赵秋燕 1任高翔 1胡丽丽1
作者信息
- 1. 合肥城市学院 土木工程学院,安徽 合肥 238079
- 折叠
摘要
以脱氮除磷及膜阻力为考察指标,研究曝气强度、搅拌转速、HRT对MBR运行的影响,利用正交试验优化MBR工艺运行条件.结果表明:由极差法和方差法分析可知,对MBR脱氮除磷影响的因素由大到小顺序依次是:HRT>搅拌转速>曝气强度,其中HRT对脱氮除磷去除效果的影响显著;对MBR膜阻力影响的因素由大到小顺序依次是:搅拌转速>曝气强度>HRT,其中搅拌转速对膜阻力的影响显著.由正交试验得出的MBR脱氮除磷最佳运行条件是:HRT为10 h,搅拌转速为120 r/min,曝气强度为120 L/h;延缓MBR膜污染最佳运行条件是:搅拌转速为120 r/min,曝气强度为120 L/h,HRT为8 h.综合MBR脱氮除磷效果及膜阻力指标、基建费用及运行成本考虑,确定MBR最佳运行水力条件:HRT为8 h,曝气强度为120 L/h,搅拌转速为120 r/min.
Abstract
The effects of aeration intensity,stirring speed,and HRT on the operation of MBR were studied,using nitrogen and phosphorus removal and membrane resistance as investigation indices.The operating conditions of MBR process were optimized by an orthogonal experiment.The results show that,according to the range analysis method and variance method,the factors influencing nitrogen and phosphorus removal in MBR are in the order of HRT>stirring speed>aeration intensity,and HRT significantly affects nitrogen and phosphorus removal.The factors that influence the resistance of the MBR film were in the order of stirring speed>aeration intensity>HRT,and stirring speed had a significant effect on the resistance of the MBR film.The optimal operating conditions obtained through an orthogonal experiment are as follows:HRT of 10 hours,stirring speed of 120 r/min,and aeration intensity of 120 L/h.The optimal operating conditions for delaying MBR membrane contamination are stirring speed of 120 r/min,aeration intensity of 120 L/h,and HRT of 8 hours.Considering the nitrogen and phosphorus removal effect of MBR,membrane resistance index,capital expenditure and operating cost,the optimal operating hydraulic conditions of MBR were determined as follows:HRT of 8 hours,aeration intensity of 120 L/h,stirring speed of 120 r/min.
关键词
脱氮除磷/膜阻力/正交实验/MBR工艺/最佳水力条件Key words
nitrogen and phosphorus removal/membrane resistance/orthogonal experiment/MBR process/optimum hydraulic condition引用本文复制引用
基金项目
安徽省高等学校科研项目(2022AH052468)
安徽省高等学校科研项目(2022AH052474)
安徽省质量工程项目(2021jxtd222)
安徽省高等学校质量工程项目(hc2021jyxm001)
安徽省教育厅高等学校优秀青年人才支持项目(gxyq2022182)
出版年
2024
国家科技期刊平台
NSTL
万方数据