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Analysis of the time series of waste water quality at the inflow of the wastewater treatment plant and transfer functions

In: Journal of Hydrology and Hydromechanics, vol. 62, no. 1
Ivan Nesmerak - Sarka Blazkova
Detaily:
Rok, strany: 2014, 55 - 59
Kľúčové slová:
Analysis of time series; Wastewater treatment plant; Inflow and outflow; Concentrations and pollution loads; Transfer functions.
URL originálneho zdroja: http://www.ih.savba.sk/jhh
O článku:
Time series of the daily total precipitation, daily wastewater discharges and daily concentrations and pollution loads of BOD5, COD, SS, N-NH4, Ntot and Ptot were analyzed at the inflow to the wastewater treatment plant (WWTP) for a larger city in 2004–2009 (WWTP is loaded by pollution from 435,000 equivalent inhabitants). The time series of the outflow from a WWTP was also available for 2007. The time series of daily total precipitation, daily wastewater discharges, concentrations and pollution loads at the inflow and outflow from the WWTP were standardized year by year to exclude a long-term trend, and periodic components with a period of 7 days and 365 days (and potentially also 186.5 days) were excluded from the standardized series. However, these two operations eliminated only a small part of the variance; there was a substantial reduction in the variance only for ammonium nitrogen and total nitrogen at the inflow and outflow from a WWTP. The relationship between the inflow into a WWTP and the outflow form a WWTP for the concentrations and pollution loads was described by simple transfer functions (SISO models) and more complicated transfer functions (MISO models). A simple transfer function (SISO model) was employed to describe the relationship between the daily total precipitation and the wastewater discharge.
Ako citovať:
ISO 690:
Nesmerak, I., Blazkova, S. 2014. Analysis of the time series of waste water quality at the inflow of the wastewater treatment plant and transfer functions. In Journal of Hydrology and Hydromechanics, vol. 62, no.1, pp. 55-59. 0042-790X (until 2019) .

APA:
Nesmerak, I., Blazkova, S. (2014). Analysis of the time series of waste water quality at the inflow of the wastewater treatment plant and transfer functions. Journal of Hydrology and Hydromechanics, 62(1), 55-59. 0042-790X (until 2019) .