COAGULATION-AND-SORPTION PURIFICATION OF WATER FROM HUMIC SUBSTANCES

Background. Deep desalination of natural waters involves considerable difficulties associated with removal of humic and fulvic acids. Application of activated carbons for this purpose is inefficient. Besides, thermal regeneration of such a sorbent outside the filter is required.Results. Synthetic porous anion exchangers capable of not only absorbing organic impurities but also desorbing on load treatment with alkali in the same filter, appeared to be perspective. Obtained optimal parameters of anion exchanger operation were corroborated in industrial desalting plants.Conclusion. It is shown that removal of humic acids by sorption is more profitable than removal by coagulation in the context of environmental protection. In addition, the possibility of use of re-generators of desalting anion filters for anionite-sorbent treatment was proved to be real.