Osady ściwkowe zawierają wiele antropogenicznych związków organicznych, które mogą powodować zanieczyszczenie gleby. Detergenty, szczególnie anionowe, w wyniku stosowania osadów ściekowych w rolnictwie mogą trafiać do gleby w znacznych ilościach. Celem pracy było zbadanie degradacji i mobilności dwu szeroko stosowanych detergentów anionowych w osadach ściekowych poddanych działaniu tlenku wapnia.
EN
Sewage sludge contains wide spectrum of organic chemicals, which can cause the soil contamination. Surfactants, especially anionic, due to agricultural use of sludge, can rich soil in a considerably large amount. There is very limited information available in the literature about fate of surfactants during liming, what is one of the most popular methods used for stabilization of sewage sludge before its land application. The aim of the presented work was to investigate effects of liming on surfactants present in sewage sludge. Two of popular anionic surfactants were studied; dodecylbenzene sulfonate and sodium dodecyl sulfate. Sludge samples were spiked with a surfactant and treated with CaO subsequently. Degradation of about 40% of the added surfactants was noted. Due to strong sorption an immobilization of more than 90% remaining pool of the investigated substances was observed. Liming was not a very effective method for degradation of anionic surfactants, but thanks to immobilization of contaminants ground water pollution risk decreases and allows the slow-rate degradation in soils.