Study on turbidity and stabilization time of effluent from calcium carbonate mineralization process
ZHANG Chengyi
WANG Lin
MU Chunxia
Abstract：The dissolving limestone in CO2 acidified desalination seawater can effectively mineralize the seawater.The experiment studied the flow rate of CO2 acidified water,the size of limestone filler,and the height of filler column on turbidity and stability time of the effluent,which can provide a reference for the process operation of calcium carbonate mineralization reactor.The results showed that increas-ing the size of limestone,the height of limestone filler,the ratio of CO2 inflow,and washing the filler layer of the limestone multiple times are beneficial to reduce the turbidity of the mineralized effluent.Increasing the particle size of the limestone filler,the flow of CO2 acidified water,and reducing the height of the limestone filler can shorten the mineralization effluent stabilization time.The limestone particles are 1-2 cm,the limestone filler height is 36.8 cm,the CO2 inflow ratio is 0.12,and the hy-draulic retention time is 3-4 min,all of which are better operating conditions.
Keywords：seawater desalinationpost-mineralizationproject operationturbiditystabilization of wa-ter quality
Publication Date：2024-10-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：7( 155-161 )