- Tytuł:
- Effect of Acetic Acid on Denitrification and Dephosphatation Process Efficiencies in Sequencing Batch Biofilm Reactor
- Autorzy:
-
Mielcarek, A.
Rodziewicz, J.
Janczukowicz, W.
Bryszewski, K. - Powiązania:
- https://bibliotekanauki.pl/articles/123858.pdf
- Data publikacji:
- 2018
- Wydawca:
- Polskie Towarzystwo Inżynierii Ekologicznej
- Tematy:
-
Sequencing Batch Biofilm Reactor
denitrification
dephosphatation
acetic acid - Opis:
- This study investigates the feasibility of using an organic substrate in the form of acetic acid to enable wastewater denitrification in a Sequencing Batch Biofilm Reactor (SBBR). The impact of nitrates presence on the yield of biological dephosphatation was determined as well. The experiment included 296 cycles and was divided into 4 series differing in the load of nitrates. The N:(C and P) ratios were: 7:(140 and 7); 35:(140 and 7); 70:(140 and 7) and 140:(140 and 7). The hydraulic retention time in the reactor was 12h (6h of mixing – dissolved oxygen concentration below 0.1 and 6h of aeration – concentration of dissolved oxygen 3.0±0.8 mgO2·dm-3). The study demonstrated that the 30-day adaptation period (60 cycles) was sufficient for the development of a stable biofilm. The C:N ratio of 2 ensured the total nitrogen concentration in the effluent below 1 mgN·dm-3. The mean efficiency of biological dephosphatation reached 7.0, 17.4, 18.7, and 30.3% in series 1–4, respectively. In the case of series 2 and 3, no significant differences were demonstrated in the total phosphorus concentration in the effluent. In the other series, the differences turned out to be significant.
- Źródło:
-
Journal of Ecological Engineering; 2018, 19, 4; 176-180
2299-8993 - Pojawia się w:
- Journal of Ecological Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł