Activated sludge process coupled with intermittent ozonation for sludge yield reduction and effluent water quality controlJärvik, Oliver; Viiroja, Andres; Kamenev, Sven; Kamenev, InnaJournal of chemical technology and biotechnology2011 / p. 978–984 : ill Combined processes for wastewater purification : treatment of a typical landfill leachate with a combination of chemical and biological oxidation processesKlauson, Deniss; Kivi, Arthur; Kattel, Eneliis; Klein, Kati; Viisimaa, Marika; Bolobajev, Juri; Velling, Siiri; Goi, Anna; Tenno, Taavo; Trapido, MarinaJournal of chemical technology and biotechnology2015 / p. 1527-1536 : ill http://dx.doi.org/10.1002/jctb.4484 Treatment of PAH-contaminated soil by combination of Fenton's reaction and biodegradationPalmroth, Marja R.T.; Langwaldt, Jörg H.; Aunola, Tuomo; Goi, Anna; Puhakka, Jaakko A.; Tuhkanen, TuulaJournal of chemical technology and biotechnology2006 / p. 598-607 : ill