SHORT COMMUNICATION
Prospects of Domestic Wastewater Treatment
for Small Settlements in Northeastern Hungary
Zoltán Veres, Nóra Bence, Gyula Lakatos
Department of Ecology, University of Debrecen, Egyetem tér 1., Debrecen, Hungary
Pol. J. Environ. Stud. 2015;24(3):1451-1456
KEYWORDS
ABSTRACT
In our study 14 wastewater treatment plants were investigated in Szabolcs-Szatmár-Bereg County in
northeastern Hungary. The size of the plants varied between 150 and 8,500 m3/day capacity. The treatment
efficiencies were compared using parameters of COD, BOD5, TN, and TP. Average C:N:P ratio of 50:9:1
suppressed nitrogen removal. Phosphorus removal was achieved with iron salt addition. The amount of daily
influent was an appropriate scale to distinguish the technologies. SBR system efficiencies were negatively
correlated with the amount of influent, which made them sufficient for small settlements. In the conventional
aeration activated sludge technology full potential was only triggered in larger sized plants.
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| eISSN: | 2083-5906 |
| ISSN: | 1230-1485 |
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