Preliminary design of wastewater treatment plant for agglomeration Dubrava at Šibenik

U ovom radu dimenzioniran je uređaj za pročišćavanje otpadnih voda naselja Dubrava kod Šibenika s drugim stupnjem pročišćavanja. Na razini idejnog projekta prikazuje se tehnološki i hidraulički proračun uređaja sa SBR tehnologijom. Usvojeno tehnološko rješenje sastoji se od linije vode i linije mulja. Linija vode započinje mehaničkim predtretmanom koji se sastoji od kanala s grubom rešetkom, ulazne crpne stanice, integrirane linije fine rešetke (bubanjskog tipa) s aeriranim pjeskolov-mastolovom te egalizacijskog bazena. Nakon mehaničkog predtretmana slijedi biološki tretman odnosno SBR reaktori iz kojih izlazi pročišćena voda i u konačnici se ispušta gravitacijski u obližnji recipijent. S druge strane, na liniji mulja nalazi se objekt za gravitacijsko zgušnjavanje mulja i spremnik za privremeno zadržavanje zgusnutog mulja do 5 dana. Iz spremnika se mulj odvozi na daljnju obradu na obližnji UPOV Šibenik.The subject of this thesis is the process of dimensioning the wastewater treatment plant for agglomeration Dubrava kod Šibenika with the second stage of treatment. The preliminary design is based on the technological and hydraulic calculation of an SBR treatment process. The adopted solution consists of the water line and the sludge line. The water line starts with the mechanical pretreatment which consists of the coarse screen, inlet pumping station, integrated fine screen with an aerated grit and grease chamber, and legalization tank. The mechanical pretreatment is followed by the SBR reactor (biological treatment). After the SBR treatment, treated water is discharged into a nearby recipient. The sludge line consists of a gravity thickener and a tank for temporary retention of thickened sludge for up to 5 days until the sludge is ready for further transport and treatment at nearby WWTP Sibenik