三沟式氧化沟曝气系统节能优化模拟

Optimization simulation of aeration mode in a triple oxidation ditch wastewater treatment process

以降曝气系统运行能耗为目的,通过数学模拟方法提出三沟式氧化沟工艺曝气系统优化运行方案,即正常运行工况下将中沟转刷开启台数由5台降至4台;当水量增幅超过25%或污染物质量浓度增幅超过50%时增开曝气转刷至5台;当水量负荷低于正常工况时,将转刷开启台数降低至3台.按照此方案运行2个月,该污水厂不仅出水水质达标,而且降低了污水处理能耗.

Based on mathematical simulation method,an optimization scheme of aeration system was proposed to save energy,which reduced the number of running aeration brush from 5 to 4 in the middle ditch under the normal operation condition.When the increasing degree of inflow was over 25%or the substrate concentration above 50%,the number of running aeration brush would be increased to 5.When the inflow were lower than normal condition,the number would be decreased to 3.With implementing this scheme for two months,the water quality of effluent could always meet the first class of B standard.