Research progress on colloidal pollutants in drinking water
After pollutants in drinking water have undergone migration,adsorption,agglomeration and other processes,they often exist in colloidal form,serving as carriers that adsorb other pollutants and seriously affecting drinking water quality.This review summarized the research progress on colloidal pollutants in drinking water in recent years,with a focus on their main classification,migration behavior and removal effect in drinking water treatment processes.It is concluded that colloidal inorganic matter,organic matter and microorganisms in drinking water are often adsorbed and aggregated with other pollutants,which may cause the colloid pump effect and affect the migration,enrichment and removal of pollutants.In conventional drinking water treatment processes,coagulation can effectively remove colloidal pollutants with particle sizes＞10 μm,while traditional filtration is not the main process for the removal of colloidal pollutants.Ozone oxidation-activated carbon adsorption and membrane separation are efficient processes for the removal of colloidal pollutants with particle sizes＜10 μm.Finally,based on the available research in this field,prospects were discussed for the effective control of colloidal pollutants,with the aim of providing guidance for the protection of drinking water quality.
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