基于节能的鼓风曝气系统溶解氧稳定智能控制方法

目前,国内大多数采用活性污泥法的城市污水处理厂的曝气控制系统普遍存在着溶解氧浓度波动大、曝气量冗余大、曝气单元能耗高等问题。介绍了一种基于气量动态变化反馈控制原理与PID反馈控制原理的鼓风曝气系统溶解氧稳定智能控制方法,该方法可以使曝气池适应污水处理厂进水水量和水质的变化,保持溶解氧浓度的稳定,对污水处理厂稳定安全的运行和降低系统能耗均有显著效果。该方法对于采用鼓风曝气的活性污泥法工艺具有良好的普适性和有效性,并在实际应用中取得了很好的效果。

Intelligent control of dissolved oxygen concentration in energy saving-based blast aeration system

Most blast aeration systems in municipal wastewater treatment plants using activated sludge treatment technique have problems such as fluctuation of dissolved oxygen concentration,aeration rate redundancy and higher energy consumption for unit aeration.This article presents an intelligent control method based on feedback control mechanism of air dynamic variation and PID control method that stabilizes the dissolved oxygen concentration in blast aeration system.This approach allows the aeration tank to be adapted to the fluctuation of influent quantity and quality,which maintains a stable concentration of dissolved oxygen.As a result,it has remarkable effects for steady and safe operation of wastewater treatment as well as energy saving.This approach can be applied to blast aeration with activated-sludge technique universally,and has been proved to be very effective in practical application.