In this work,38 different organic emerging contaminants(ECs),belonging to various chemical classes such as pharmaceuticals(PhCs),endocrine-disrupting chemicals(EDCs),benzotriazoles(BTRs),benzothiazoles(BTHs),and perfluorinated compounds(PFCs),were initially identified and quantified in the biologically treated wastewater collected from Athens'(Greece)Sewage Treatment Plant(STP).Processes already used in existing STPs such as microfiltration(MF),nanofiltration(NF),ultrafiltration(UF),UV radiation,and powdered activated carbon(PAC)were assessed for ECs'removal,under the conditions that represent their actual application for disinfection or advanced wastewater treatment.The results indicated that MF removed only one out of the 38 ECs and hence it was selected as pretreatment step for the other processes.UV radiation in the studied conditions showed low to moderate removal for 5 out of the 38 ECs.NF showed better results than UF due to the smaller pore sizes of the filtration system.However,this enhancement was observed mainly for 8 compounds originating from the classes of PhCs and PFCs,while the removal of EDCs was not statistically significant.Among the various studied technologies,PAC stands out due to its capability to sufficiently remove most ECs.In particular,removal rates higher than 70％were observed for 9 compounds,22 were partially removed,while 7 demonstrated low removal rates.Based on our screening experiments,future research should focus on scaling-up PAC in actual conditions,combining PAC with other processes,and conduct a complete economic and environmental assessment of the treatment.

Department of Environment,University of the Aegean,Mytilene 81100,Greece;Department of Chemical Engineering,University of Patras,Patras 26504,Greece;Department of Agricultural Development,Agrofood and Management of Natural Resources,National and Kapodistrian University of Athens,Psachna 34400,Greece;Department of Chemistry,National and Kapodistrian University of Athens,Athens 15771,Greece;Department of Chemistry,Norwegian University of Science and Technology,Trondheim NO-7491,Norway;Core Labs,King Abdullah University of Science and Technology,Thuwal 23955-6900,Saudi Arabia;Sanitary Engineering Laboratory,Department of Water Resources and Environmental Engineering,School of Civil Engineering,National Technical University of Athens,Athens 15780,Greece;Department of Chemical Engineering,University of Western Macedonia,Kozani 50132,Greece

[1]Olga S.Arvaniti;Marilena E.Dasenaki;Alexandros G.Asimakopoulos;Niki C.Maragou;Vasilios G.Samaras;Korina Antoniou;Georgia Gatidou;Daniel Mamais;Constantinos Noutsopoulos;Zacharias Frontistis;Nikolaos S.Thomaidis;Athanasios S.Stasinakis-.Effectiveness of tertiary treatment processes in removing different classes of emerging contaminants from domestic wastewater)[J].环境科学与工程前沿,2022(11):123-134

PhCs,benzotriazoles,BTRs,benzothiazoles,BTHs,Sewage

Effectiveness,tertiary,processes,removing,different,classes,emerging,contaminants,from,domestic,wastewater,In,this,work,organic,ECs,belonging,various,such,pharmaceuticals,endocrine,disrupting,chemicals,EDCs,perfluorinated,compounds,PFCs,were,initially,identified,quantified,biologically,treated,collected,Athens,Greece,Treatment,Plant,Processes,already,used,existing,STPs,microfiltration,MF,nanofiltration,ultrafiltration,UF,UV,radiation,powdered,activated,carbon,PAC,assessed,removal,under,conditions,that,represent,their,actual,application,disinfection,advanced,results,indicated,removed,only,one,out,hence,selected,pretreatment,step,other,studied,showed,low,moderate,better,than,due,smaller,pore,sizes,system,However,enhancement,observed,mainly,originating,while,not,statistically,significant,Among,technologies,stands,its,capability,sufficiently,most,particular,rates,higher,partially,demonstrated,Based,our,screening,experiments,future,research,should,focus,scaling,combining,conduct,complete,economic,environmental,assessment

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