Simulation of Wastewater Depolution Processes by Advanced Biological Methods

Mirel, Oana Stela; Florescu, Constantin

Oana Stela Mirel, Constantin Florescu

Simulation of Wastewater Depolution Processes by Advanced Biological Methods

Abstract:

This paper presents the results from a study which simulates wastewater depollution processes using advanced biological methods. The experimental research was performed in a static biological reactor, equipped with an air compressor and an agitator / mixer. Synthetic wastewater, prepared with the addition of glucose, was fed into the reactor. The wastewater was subjected to alternating cycles of aeration and slow mixing, for consecutive 3 h intervals within the reactor to ensure the necessary conditions for the reduction of nitrogen based organic compounds within the wastewater. In the successive aeration processes, aerobic / nitrifying microorganisms which developed within the reactor, facilitated the decomposition of organic substances into nitrites and then into nitrates. By stopping aeration and starting the slow mixing cycle the anaerobic / denitrifying microorganisms growing in the reactor consume the necessary oxygen from nitrates and release free nitrogen into the atmosphere, thus completing the process of advanced depollution. Therefore, the experimental procedure highlights the existence of two distinct phases in the development of the depollution process. In the first phase, the biological process is initiated using glucose in order to promote the growth of the bacterial flora. In the second phase (the regime phase), the reduction of mineral and organic pollutants from the wastewater is ensured. The activity of microorganisms in the biological reactor can be further supported by the recirculation of activated sludge retained in the secondary decanter. The proposed technology offers a fast, safe and relatively inexpensive method for advanced wastewater depollution. Bioreactors of this type are recommended in wastewater treatment schemes in the hearth of rural localities, agro-zootechnical complexes and tourist units with seasonal activities due to their fluctuations in hourly wastewater flow rates. Similar approaches can also be considered for the elimination of ammonium compounds in groundwater polluted with animal manure.

Keywords:
biological reactor; nitrification-denitrification ammonium; nitrites; nitrates

Issue: 2020, Volume 71, Issue 10

Pages: 150-160

Publication date: 2020/11/3

https://doi.org/10.37358/RC.20.10.8359

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This article is published under the Creative Commons Attribution 4.0 International License

Citation Styles

Cite this article as:
MIREL, O.S., FLORESCU, C., Simulation of Wastewater Depolution Processes by Advanced Biological Methods, Rev. Chim., 71(10), 2020, 150-160.

Vancouver
Mirel OS, Florescu C. Simulation of Wastewater Depolution Processes by Advanced Biological Methods. Rev. Chim.[internet]. 2020 Oct;71(10):150-160. Available from: https://doi.org/10.37358/RC.20.10.8359

APA 6th edition
Mirel, O.S., Florescu, C. (2020). Simulation of Wastewater Depolution Processes by Advanced Biological Methods. Revista de Chimie, 71(10), 150-160. https://doi.org/10.37358/RC.20.10.8359

Harvard
Mirel, O.S., Florescu, C. (2020). 'Simulation of Wastewater Depolution Processes by Advanced Biological Methods', Revista de Chimie, 71(10), pp. 150-160. https://doi.org/10.37358/RC.20.10.8359

IEEE
O.S. Mirel, C. Florescu, "Simulation of Wastewater Depolution Processes by Advanced Biological Methods". Revista de Chimie, vol. 71, no. 10, pp. 150-160, 2020. [online]. https://doi.org/10.37358/RC.20.10.8359

Text
Oana Stela Mirel, Constantin Florescu,
Simulation of Wastewater Depolution Processes by Advanced Biological Methods,
Revista de Chimie,
Volume 71, Issue 10,
2020,
Pages 150-160,
ISSN 2668-8212,
https://doi.org/10.37358/RC.20.10.8359.
(https://revistadechimie.ro/Articles.asp?ID=8359)
Keywords: biological reactor; nitrification-denitrification ammonium; nitrites; nitrates

RIS
TY - JOUR
T1 - Simulation of Wastewater Depolution Processes by Advanced Biological Methods
A1 - Mirel, Oana Stela
A2 - Florescu, Constantin
JF - Revista de Chimie
JO - Rev. Chim.
PB - Revista de Chimie SRL
SN - 2668-8212
Y1 - 2020
VL - 71
IS - 10
SP - 150
EP - 160
UR - https://doi.org/10.37358/RC.20.10.8359
KW - biological reactor
KW - nitrification-denitrification ammonium
KW - nitrites
KW - nitrates
ER -

BibTex
@article{RevCh2020P150,
author = {Mirel Oana Stela and Florescu Constantin},
title = {Simulation of Wastewater Depolution Processes by Advanced Biological Methods},
journal = {Revista de Chimie},
volume = {71},
number = {10},
pages = {150-160},
year = {2020},
issn = {2668-8212},
doi = {https://doi.org/10.37358/RC.20.10.8359},
url = {https://revistadechimie.ro/Articles.asp?ID=8359}
}

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