ANALYSIS OF WASTEWATER AFTER MECHANICAL AND BIOLOGICAL PURIFICATION IN A SUGAR FACTORY

Svrha ovog završnog rada je analizirati otpadnu vodu nakon mehaničkog i biološkog pročišćavanja u tvornici šećera. Uzorci uzeti po mjesecima analizirani su u laboratoriju Zavoda za javno zdravstvo „Sveti Rok“ u Virovitici gdje se analiziraju tvari prema određenim normama i pravilnicima. U ovom su radu napravljene analize pH vrijednosti, koncentracije mineralnih ulja, anionski detergenti, ukupne suspendirane tvari, ukupna ulja i masti, otopljeni kisik, ukupni dušik, ukupni fosfor, BPK-5, KPK. Maksimalno dopuštene koncentracije određenih tvari u otpadnim vodama propisane su Pravilnikom o graničnim vrijednostima emisija otpadnih voda (NN 26/2020) koji je u skladu sa Zakonom o vodama (NN 66/2019).he purpose of this paper is to analyse waste waters after mechanical and biological purification in a sugar factory. Samples are analysed over months in the laboratory of the Public Health Institute “Sveti Rok” in Virovitica where substances are analysed according to certain norms and regulations. In this paper we analyse of pH value, concentration mineral oils, anionic detergents, total suspended solids, total oils and fats, dissolved oxygen, dissolved nitrogen, dissolved phosphorous, BPK-5, KPK. Maximum allowed concentrations of certain substances in waste waters are prescribed by the Rulebook on Limits of Wastewater Emissions (NN 26/2020) which is in accordance with the Water Regulations Law (NN 66/2019)