Temat: biological sewage treatment - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Effect of carbon source and nitrate concentration on denitrification of high-nitrate wastewater
Autorzy:: Horová, Dorota
Bezucha, Petr
Růžičková, Iveta
Powiązania:: https://bibliotekanauki.pl/articles/207338.pdf
Data publikacji:: 2020
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: activated sludge
biological denitrification
sewage treatment plant
osad czynny
oczyszczalnia ścieków
denitryfikacja biologiczna
Opis:: The aim of the present work was to study the applicability of the activated sludge from a municipal wastewater treatment plant for high strength nitrate denitrification process. A sequenced batch reactor operated at initial nitrate concentration in the range from 750 to 8500 mg NO⁻₃_-N/dm³ .The effectiveness of various carbon sources on denitrification rate and nitrite accumulation was studied. The average specific denitrification rate was in the range from 58 to 62 mg NO⁻₃_-N /(g VSS·h) for ethanol, glycerol, molasses and whey. The denitrification with methanol was not effective.
Źródło:: Environment Protection Engineering; 2020, 46, 1; 73-89
0324-8828
Pojawia się w:: Environment Protection Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The impact of the sewer system rinsing on the wastewater composition
Autorzy:: Sadecka, Z.
Płuciennik-Koropczuk, E.
Myszograj, S.
Suchowska-Kisielewicz, M.
Jakubaszek, A.
Powiązania:: https://bibliotekanauki.pl/articles/207804.pdf
Data publikacji:: 2013
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: sewers
pollution
sewage
sewage pumping plants
water treatment plants
biological reactor
sewage pollutions
wastewater treatment plants
kanalizacja
ścieki
przepompownie ścieków
stacje uzdatniania wody
reaktor biologiczny
zanieczyszczenia ścieków
oczyszczalnie ścieków
Opis:: The paper presents the results of research on the influence of the operational rinsing of a sewer system on the composition of raw sewage, the effectiveness of the operation of the mechanical part of a wastewater treatment plant and changes in the technological parameters of the biological reactor. The results of the research have shown an increase in sewage pollution during the rinsing of the sewer system. The value of the COD indicator increased from 799 to 1306 mg/dm3, BOD5 from 538 to 1044 mg/dm3, and total suspended solids from 259 to 1508 mg/dm3. The calculations indicate that an increase in the concentrations of pollution during the rinsing of the sewer system requires a high working efficiency of the mechanical part of the wastewater treatment plant. With a low efficiency the volume of the biological reactor can increase even by 30%.
Źródło:: Environment Protection Engineering; 2013, 39, 2; 5-13
0324-8828
Pojawia się w:: Environment Protection Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Performance analysis of the horizontal sub-surface flow constructed wetland under different hydraulic loading rates for rural domestic wastewater treatment
Autorzy:: Khairalla, A. M. O.
Xiwu, L.
Ladu, J. L.
Wenbo, Z.
Powiązania:: https://bibliotekanauki.pl/articles/207342.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: HFCW
Horizontal Flow Constructed Wetlands
rural sewage treatment plants
biological processes
retention time
oczyszczalnia hydrofitowa
wiejskie oczyszczalnie ścieków
czas retencji
procesy biologiczne
Opis:: The performance of horizontal subsurface flow constructed wetland (HFCW) for rural domestic sewage treatment has been evaluated. The system was built as a tertiary treatment after the biological processes to improve the effluent wastewater quality. The HFCW was operated in three phases under different hydraulic loading rates (HLRs), and with three kinds of aquatic plants i.e., water spinach, Chinese celery and cress. The vegetation growth parameters such as plant height, fresh and dry weights were monitored and analyzed. The influent and effluent concentrations of the chemical oxygen demand (COD), ammonium nitrogen (NH4+-N), total nitrogen (TN) and total phosphorus (TP) were measured. The average removal efficiencies at the first phase were 52.9%, 64.7%, 58.2% and 72.8%, and it reduced to 48.6%, 52.2%, 44.04% and 64.4% in the second phase for COD, NH4+-N, TN and TP, respectively. In the third phase, the HFCW system showed the following mean removal efficiencies: 51.2%, 74.2%, 58.5% and 80.9%. The results revealed that the removal efficiencies increased with decrease in the HLR and increased temperatures. The findings confirmed that the horizontal flow constructed wet-land is more convenient for the rural wastewater treatment with efficient nutrient removal.
Źródło:: Environment Protection Engineering; 2016, 42, 4; 107-121
0324-8828
Pojawia się w:: Environment Protection Engineering
Dostawca treści:: Biblioteka Nauki

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