氨氮动态优化控制系统在污水厂的应用效果

Application Effect of Ammonia Nitrogen Dynamic Optimization Control System in Wastewater Treatment Plant

氨氮动态优化控制系统是采用控制器算法,将氨氮作为控制目标对溶解氧进行设定,实现溶解氧的设定由静态变动态控制,并形成了基于氨氮动态优化的溶解氧控制系统。与传统的人工方式设定溶解氧设定值相比,氨氮优化控制系统根据出水氨氮浓度设定值,自动计算溶解氧设定浓度和曝气量,在保证出水氨氮达标的基础上,优化曝气运行控制,降低曝气能耗,生化池好氧区实现了“按需曝气”的目的,从而缓解回流硝化液中溶解氧浓度过高对反硝化过程的抑制,提高脱氮效率。

The ammonia nitrogen dynamic optimization control system adopts the controller algorithm to set the dissolved oxygen as the control target,realizes the setting of dissolved oxygen by static variable dynamic control,and forms a dissolved oxygen control system based on the dynamic optimization of ammonia nitrogen.Compared with the traditional setting of dissolved oxygen by the manual method,the ammonia nitrogen optimization control system automatically calculates the dissolved oxygen set concentration and the aeration amount according to the set value of the effluent ammonia nitrogen concentration.On the basis of ensuring the effluent ammonia nitrogen standard,the aeration operation control is optimized,the aeration energy consumption is reduced,and the aerobic zone of the biochemical pool achieves the purpose of“on-demand aeration”,which alleviates the inhibition of the denitrification process by excessively high dissolved oxygen concentration in the reflux nitrification liquid,and improves the denitrification efficiency.