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Coagulation of natural organic matter in groundwater using aluminium salts
1999
Karlovic, E. (Prirodno-matematicki fakultet, Novi Sad (Yugoslavia). Institut za hemiju) | Dalmacija, B. | Zejak, J. | Bajevic, Lj. | Djeric, J. | Djuric, Z.
Removal of natural organic matter (NOM) from groundwater by aluminium sulphate and polyaluminium chloride (PACl) was investigated. The maximal decrease of UV absorbance at 254 nm was near 70%. Decrease of permanganate value about 50% was achieved by PACl coagulation. Similar effect can be achieved using 2.5 fold higher concentration of aluminium sulphate. Coagulation process at pH 5.5 was successful with 3-5 times less concentration of coagulant. The heterogenous composition of NOM in water had been changing by coagulation. The total trihalomethane formation potential is 50-60% lower in coagulated water. The greatest removal was success for chloroform precursors.
Show more [+] Less [-]Removal of organic matter from water using activated carbon produced from domestic [Yugoslav] anthracite
1999
Tamas, Z. | Zejak, J. | Becelic, M. (Prirodno-matematicki fakultet, Novi Sad (Yugoslavia). Institut za hemiju)
Removal of natural organic matter from water was investigated using granulated activated carbon. Groundwater from northern Banat region (Serbia, Yugoslavia) was used. Samples of raw water and water after coagulation were ozonated and than GAC adsorption was performed. The investigation was carried out under the static conditions to determine the GAC adsorption capacity and kinetic coefficients.
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