Removal effect of low concentration phosphorus with Al-based coagulant under diffusion control
The study compared the removal characteristics of different phosphorus forms at different depths with different concentrations of AlCl3 and Al13 aluminium-based coagulants.AlCl3 showed excellent phosphorus control,with AlCl3 reducing total phosphorus(TP)to 9 μg/L after 2 h of sedimentation and reducing dissolved phosphorus in a shorter period of time.Both AlCl3 and Al13 contributed to the removal of particulate phosphorus from the surface water.At pH=7.5,phosphorus was removed in the form of Al-P precipitation.AlCl3 had a better ability to remove organic matter and was able to reduce the DOC concentration rapidly at 0.5 h.The results of the study can provide a reference for the selection of suitable phosphorus control agents and dosage,and help to develop in-situ phosphorus pollution control strategies and maintain ecological health.
国家科技期刊平台
NSTL
万方数据
维普
