REMOVAL OF HUMIC SUBSTANCES DURING TREATMENT OF DRINKING WATER USING SORBENTS
The removal of humic substances during drinking water preparation by artificial recharge of groundwaters using synthetic sorbents, activated carbon and anthracite was assessed. Humic (HA) and fulvic (FA) acids isolated from soil, peat, water, filters, from the infiltration basin for artificial groundwater recharge, as well as commercial humic acid, were used in study. It was found that adsorption is determined by the sorbent properties, and the nature of the humic substance. The sorption process is slow, controlled by pH and ionic strength (sorption increases in acidic and high ion strength conditions), and depends on the porosity of the used sorbents and the character of their functional groups. The tested sorbents proved their efficiency in pilot scale experiments.