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Aplinkos inžinerijos fakultetas / Faculty of Environmental Engineering >
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Title: | Analysis and assessment of biological treatment processes in a small-scale wastewater treatment plant |
Authors: | Mažeikienė, Aušra Vaiškūnaitė, Rasa |
Keywords: | wastewater treatment plant small individual activated sludge |
Issue Date: | 2018 |
Publisher: | HARD Publishing Company |
Citation: | Mažeikienė, A.; Vaiškūnaitė, R. 2018. Analysis and assessment of biological treatment processes in a small-scale wastewater treatment plant, Polish journal of environmental studies 27(4): 1629–1637 |
Series/Report no.: | 27;4 |
Abstract: | With stricter requirements for wastewater treatment, small-scale individual wastewater treatment
plants can provide a financially attractive alternative to a sever connection in locations far from the existing
sewer network. Systems operating under the basis of active sludge are considered advanced, and their
producers declare high levels of wastewater treatment not only according to BOD, but also under biogenic
materials. However, there are hardly any data on how small-scale individual household wastewater
treatment facilities operate. This article presents an analysis of the main parameters of wastewater
biologically treated in three small-scale household wastewater treatment plants (which operate under the
basis of active sludge), namely TSS, COD, BOD7, Nt, NO3-N, NH4-N, Pt, and PO4-P concentrations. The
research lasted for 5.5 months during a cold period. According to TSS, COD, and BOD7 concentrations
in effluent, the wastewater treatment level in the study plants was good. The concentrations of these
substances in effluent (TSS<10 mg/L, COD<98 mg/L, BOD7<20 mg/L) were lower than requirements
for treated water. However, NH4-N in the effluent in winter increased up to 6-7 mg/L and to 26 mg/L.
The concentrations of Nt and Pt in treated wastewater exceeded EU requirements for water released from
wastewater treatment facilities. PO4-P removal, in many cases, was ineffective or did not take place at all. |
URI: | http://dspace.vgtu.lt/handle/1/3638 |
ISSN: | 1230-1485 |
Appears in Collections: | Moksliniai straipsniai / Research articles
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