污水深度处理臭氧氧化系统工程造价分析

系统掌握污水深度处理臭氧氧化系统的工程造价构成及其影响因素对降低其工程造价具有重要意义。详细分析了臭氧发生、臭氧投加、臭氧接触反应及臭氧尾气处理等污水深度处理臭氧氧化系统4个子系统的工程造价构成及其影响因素,结果表明:臭氧发生单元的造价所占比重最大,高达60%~70%,其次是臭氧尾气破坏设备(16%~18%)和臭氧投加单元(12%~15%),臭氧接触反应设备的造价所占比重最小,约为3%~5%。影响臭氧氧化系统工程造价的主要因素除处理规模外,还有臭氧投加量、臭氧气体浓度及水力停留时间等工艺参数,其中臭氧投加量和臭氧气体浓度的影响较大。在达到处理要求的情况下,提高臭氧利用率、降低臭氧投加量以及升高臭氧气体浓度,是有效降低臭氧氧化系统工程造价的关键。

Analysis on Construction Cost of Ozone Oxidation Process for Wastewater Advanced Treatment and Reuse

It is very significant to decrease the construction costs that the composition and impact factor of ozone oxidation process for wastewater advanced treatment are systematically grasped.The construction costs of four subsystems of ozone oxidation process for wastewater advanced treatment including ozone generator system,ozone adding device,ozone reactor and exhaust gas treatment system,were analyzed.It is proved that the proportion of the construction costs of ozone generator system is the highest as 60%~70%,the exhaust gas treatment system as 16%~18%,the ozone adding device as 12%~15%,and the ozone reactor is lowest as 3%~5%.Some technological parameters as ozone dosage,ozone gas concentration and hydraulic retention time besides influent flow are the main factors of construction costs of wastewater reuse system by ozone oxidation and the more important factors are the ozone dosage and ozone gas concentration.On the premise of improving the treatment effect,the key measures to decrease the construction costs of ozonation system is improving ozone utilization rate by reducing ozone dosage and increasing ozone gas concentration.