火电厂脱硫废水曝气装置优化改造与效果分析  

Optimization and Effect Analysis of Desulfurization Wastewater Aeration Device in Thermal Power Plant

作　　者：董吉柱 DONG Jizhu(Shenneng Hehe Electric Power(Heyuan)Co.,Ltd,Heyuan 517000,Guangdong,China)

机构地区：[1]深能合和电力(河源)有限公司,广东河源517000

出　　处：《南方能源建设》2023年第S01期74-80,共7页Southern Energy Construction

基　　金：深圳能源集团公司科技项目“2018年深能合和脱硫废水预处理曝气池优化改造项目”(GXGZSQ1201710270041)。

摘　　要：[目的]曝气风机是火电厂脱硫废水预处理系统中的重要设备,一般用作为曝气池内部曝气装置提供气源,因此曝气风机使用的可靠性直接影响着脱硫废水预处理系统运行的稳定性。[方法]主要介绍脱硫废水预处理特性和工艺流程,并以实际案例对目前曝气装置中存在的通病进行深入剖析,最终确定采取合理布设顶进式搅拌器代替曝气装置的技术方案路线。[结果]通过对改造前后的脱硫废水指标、污泥沉积情况和经济性进行分析,表明该技术改造不仅成功的解决了曝气池内污泥频繁沉积问题,运维费用比原曝气装置降低了85.29%,厂用电费用降低了52.78%,而且提高了脱硫废水预处理系统运行的稳定性。[结论]对于解决同类型脱硫废水曝气装置存在的问题具有较高的参考价值。[Introduction]Aeration fan is an important equipment in the desulfurization wastewater pretreatment system of thermal power plant.It is generally used as the gas supply source for the aeration device in the aeration tank.Therefore,the reliability of the aeration fan directly affects the stability of the desulfurization wastewater pretreatment system.[Methods]This paper mainly described the characteristics and process of desulfurization wastewater pretreatment,thoroughly analyzed the common problems existing in the aeration device with a practical case,and finally determined the technical scheme of replacing the aeration device with a reasonably arranged top entry agitator.[Result]By analyzing the desulfurization wastewater index,sludge deposition and economical efficiency before and after the transformation,it shows that the technical transformation not only can successfully solve the problem of frequent sludge deposition in the aeration tank,reduce the operation and maintenance costs by 85.29%compared with the original aeration device and bring down the auxiliary power cost by 52.78%but also can improve the stability of the desulfurization wastewater pretreatment system operation.[Conclusion]It has a high reference value for solving the problems existing in the same type of desulfurization wastewater aeration device.

关 键 词：曝气风机 曝气池 脱硫废水 顶进式搅拌器 污泥沉积 

分 类 号：TM611[电气工程—电力系统及自动化] X703[环境科学与工程—环境工程]