污水处理厂提标改造工程中曝气控制系统的应用  

Application of Aeration Control System in Upgrade and Expansion Project

作　　者：程树辉[1] 孙月娣 

机构地区：[1]北京市市政工程设计研究总院有限公司,北京100082 [2]美尚生化环境技术<上海>有限公司,上海201202

出　　处：《中国给水排水》2016年第1期63-66,70,共5页China Water & Wastewater

摘　　要：安徽巢湖市岗岭污水厂提标改造工程有利于改善巢湖最大支流裕溪河的水质,促进区域经济发展和保护水环境。工程设计中通过收集现有一期工程实际进水数据,统计其累积频率为92%、50%和8%的进水水质,作为提标改造设计进水条件,充分利用一期工程现况,将扩建和提标相结合。在曝气控制上通过传统方法和数学模型,计算不同工况下需氧量和需气量,发现两者具有较好的一致性,但模型计算更具优势。通过空气管径核算、优化管路布置、曝气器和鼓风机设备选型,为实现生物工艺曝气控制系统(BACS)奠定良好基础。该系统通过对鼓风机总风量的调节及流量调节阀门的联动,及时准确地分配与控制生物反应池气量,以达到溶解氧及处理效果稳定控制的需求,最终实现节能降耗。The construction of the WWTP could help to improve water quality upgrade and expansion project in Anhui Chaohu Gangling of Yuxi River, the biggest tributary of Chaohu Lake, and real- ize the win-win goals of regional economic development and environmental protection. The actual influent data of the existing Phase I project were collected, the analysis was made, and the influent data under the cumulative frequency of 92%, 50% and 8% were used as the design influent of Phase II project. The expansion and upgrade were combined by taking full use of the current conditions of Phase I project. The traditional and mathematical methods were applied to calculate oxygen and air demand. The resuits showed that there was a good consistency between the two methods, while the model calculation was better. The calculation of air pipe diameter, the optimization of pipe layout and the selection of aerators and blowers all laid a good foundation for realizing bioprocess aeration control system （BACS）. BACS could control the total airflow and valve opening and coordinate valves to distribute the air accurately to each aeration zone and complete the task of tracing DO set-points, which could ensure energy saving and consumotion reduction.

关 键 词：生物工艺曝气控制系统 需氧量 需气量 鼓风机 

分 类 号：X703[环境科学与工程—环境工程]