污水处理厂曝气风量调配的优化探讨

Optimization Study on Air Volume Allocation in Sewage Treatment Plants

污水处理厂常常遇到不同生化反应池之间配气不均、难以调节的问题。结合实际工程案例,从理论层面就风量调配问题进行分析,总结了问题产生的主要原因。在此基础上,从设计及运营两方面提出一系列优化建议,包括干管布置形式优化、空气管道压力平衡校核、风量调节阀选型优化、设置管道压力调节附件,严格控制生化反应池液位,尽量减少不同分组曝气器的差异以及优化气量分配自控系统等。

Uneven air volume allocation and inconvenience of air flow adjustment are common problems in sewage treatment plants. This problem was analyzed from theoretical level based on one practical case, and the main causes were summarized in this paper. Accordingly, a series of optimization suggestions were provided from both design and operation perspective, including the optimization of the layout of the main air pipes, the check of the pressure balance of air pipe network , the optimization selection of the air flow adjusting valve, and the setting of the pressure regulating accessories. The liquid level of biochemical reaction tank was strictly controlled, the difference of aerators in different groups was reduced as far as possible, and the automatic control system of gas distribution was optimized.