Design of Ozone Catalytic Oxidation Process in Underground Reclaimed Water Plants:A Case Study of Shenzhen Garden Reclaimed Water Plant
Shenzhen garden reclaimed water plant has implemented discharge standard for key control areas as specified in Discharge Standard of Water Pollutants for Daqing River Basin(DB13/2795-2018)(COD≤20 mg/L).To meet these stringent requirements consistently,the plant decided to incorporate an advanced COD removal process in addition to its existing multi-stage water inlet A2 O process and deep-bed filter process.Several advanced treatment processes for COD removal were evaluated,including ozone catalytic oxidation,activated carbon adsorption,ultrafiltration,and reverse osmosis integrated technology.After a thorough comparison,it is determined that the most suitable advanced COD removal process for this specific plant is ozone catalytic oxidation.The catalytic oxidation process system mainly includes liquid oxygen station,ozone preparation room,ozone catalytic oxidation tank,etc.Furthermore,the system layout of ozone catalytic oxidation and the relative relationship of each treatment monomer are introduced,and the general layout,design parameters and design points of three structures are emphatically analyzed,which can provide reference for similar projects in the future.
reclaimed water plantundergroundadvanced treatment processozone catalytic oxidationprocess design
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