Uklanjanje arsena iz podzemnih voda sa područja Zapadnobačkog okruga

Abstract

Vojvodina, as a part of Pannonian plain, is supplied with underground waters from well which are located 150 to 200 m under the surface. The quality of these waters is questionable and specific due to to the presence of higher concentrations of arsenic, iron, ammonium and, frequently enough, humic acid and sulphide. The price of drinking water in this area is affected by the presence and the complicated interaction of the above mentioned polluting materials in the underground waters. In this region the concentration of arsenic in the water varies from 2-250 μg/l, whereas the concentration of humic acid is often higher than 20 mg/l. The aim of this paper is to present the results of the researches conducted on one of the pilot plant in Vojvodina where Iron Oxide Hybrid System was used for treating arsenic in combination with applying other technologies for eliminatinating other pollutants from raw water. The adsorption technique was chosen on the basis of the previously conducted analyses and on the available reference data about the effects and efficiency of other technologies.

Vojvodina, deo Panonske nizije, snabdeva se podzemnom vodom iz izdani koje zaležu na dubinama 150 – 250 m. Kvalitet ove vode je problematičan i specifičan iz razloga sto ima povišene koncentracije arsena, gvožđa, amonijaka, a veoma često i huminskih materija i sulfida. Navedene zagađujuće materije u podzemnim vodama i njihova složena međusobna interakcija komplikuju i poskupljuju tretman vode za piće. Koncentracija arsena koja se javlja u ovoj oblasti varira od 2 – 250 µg, dok je koncentracija huminskih materija često veća od 20 mgl-1. Ovaj rad prikazuje rezultate istraživanja na jednom od pilot postrojenja u Vojvodini, gde je za tretman arsena korišćen gvožđe oksidni hibridni sistem, zajedno sa kombinacijom još nekoliko tehnologija za uklanjanje ostalih zagađujućih materija iz sirove vode. Adsorptivna metoda tretmana arsena odabrana je na osnovu pređašnjih analiza i literaturnih podataka o ekonomičnosti i efikasnosti ostalih tehnologija.