水厂臭氧发生器的经济运行分析

水厂深度处理精细化管理有待提升,能耗和运行成本可进一步降低。结合某水厂深度处理工艺,投加的臭氧发生浓度为6%~12%,预臭氧投加量为0.6 mg/L,后臭氧投加量为0.8 mg/L,水体余臭氧浓度小于0.2 mg/L,分析臭氧发生器的最佳经济运行工况点。结果表明,不同臭氧发生浓度,臭氧-生物活性炭滤池深度处理工艺对高锰酸盐指数的去除率在64%~70%。当臭氧发生浓度为9%时,液氧消耗和电能消耗之和最低,运行成本为11.31×10^-3元/m³。对比最低臭氧浓度6%投加,运行年费用可节约29.89万元。对比实际生产投加臭氧浓度7%,运行年费可节约5.85万元。

Economic Operation Analysis of Ozone Generator in Water Treatment Plant

Delicacy management in advanced WTP needs to be promoted,energy consumption and operation cost can be further reduced.Combined with advanced treatment process,the best working condition of ozone generator was analyzed.The ozone generation concentration was 6%~12%,the pre-ozone dosage was 0.6 mg/L,the main ozone dosage was 0.8 mg/L,and the residual ozone concentration in the water was less than 0.2 mg/L.The results showed that the removal rate of COD_Mnby ozone-biological activated carbon filter process was controlled in 64%~70%at different ozone generation concentrations.When added up to 9%of ozone concentration,the sum of oxygen consumption and energy consumption was the lowest,the operating cost was 11.31×10^-3 yuan/m³,and the annual operation fee could be saved by 298.9 thousand yuan.Compared with the actual ozone concentration of 7%,the annual operation fee could be saved by 58.5 thousand yuan.