Enhancing Ecological Efficiency in Biological Wastewater Treatment: A Case Study on Quality Control Information System

This study aimed to improve the control system of the biological stage of wastewater treatment using the quality control information system to support the concept of environmental efficiency management. In this case, the object of the study was the treatment facilities of Sumy city (Ukraine). For au...

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Main Authors: Dmitriy Alekseevsky, Yelizaveta Chernysh, Vladimir Shtepa, Viktoriia Chubur, Lada Stejskalová, Magdalena Balintova, Manabu Fukui, Hynek Roubík
Format: Article
Language:English
Published: MDPI AG 2023-10-01
Series:Water
Subjects:
Online Access:https://www.mdpi.com/2073-4441/15/21/3744
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author Dmitriy Alekseevsky
Yelizaveta Chernysh
Vladimir Shtepa
Viktoriia Chubur
Lada Stejskalová
Magdalena Balintova
Manabu Fukui
Hynek Roubík
author_facet Dmitriy Alekseevsky
Yelizaveta Chernysh
Vladimir Shtepa
Viktoriia Chubur
Lada Stejskalová
Magdalena Balintova
Manabu Fukui
Hynek Roubík
author_sort Dmitriy Alekseevsky
collection DOAJ
description This study aimed to improve the control system of the biological stage of wastewater treatment using the quality control information system to support the concept of environmental efficiency management. In this case, the object of the study was the treatment facilities of Sumy city (Ukraine). For automatic control of wastewater quality, pH, oxidation reduction potential (ORP), electrical conductivity, and temperature indicators were taken, as well as hydrobiological analysis of activated sludge and mathematical modelling. The pH of wastewater at the input system has systematically unacceptable values (above 8.5 were recorded). Unacceptable concentrations of sulphur-containing toxicants arrive at the entrance of treatment facilities (0.22–1.3 mg/L). The response of activated sludge biocenosis to increasing concentrations of hydrogen sulphide in wastewater was analysed. Furthermore, a mathematical model of monoculture population growth, with two factors that affect population growth (nutrient concentration and monoculture production concentration), was implemented for the initial assessment of possible negative effects on wastewater treatment. The differential equation of the population dynamics of the <i>i</i>-th species of microorganisms in activated sludge was described. The applied system of automated monitoring of wastewater parameters with expert assessment of activated sludge and a unified mathematical model of approaches allows for a complex system of decision-making support to be realised. However, this requires the construction of mathematical models that would take into account the cause–effect relations that operate under conditions of incomplete technological information and the potential presence of emergencies due to natural disasters and military activities.
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spelling doaj.art-0c3cba43e67949afbc8937d32dcfabc72023-11-10T15:15:11ZengMDPI AGWater2073-44412023-10-011521374410.3390/w15213744Enhancing Ecological Efficiency in Biological Wastewater Treatment: A Case Study on Quality Control Information SystemDmitriy Alekseevsky0Yelizaveta Chernysh1Vladimir Shtepa2Viktoriia Chubur3Lada Stejskalová4Magdalena Balintova5Manabu Fukui6Hynek Roubík7Zaporizhzhya National University, 66, Zhukovskogo St., 69600 Zaporizhzhya, UkraineInternational Innovation and Applied Center “Aquatic Artery”, Sumy State University, 2, Rymskogo-Korsakova St., 40007 Sumy, UkraineInternational Innovation and Applied Center “Aquatic Artery”, Sumy State University, 2, Rymskogo-Korsakova St., 40007 Sumy, UkraineInternational Innovation and Applied Center “Aquatic Artery”, Sumy State University, 2, Rymskogo-Korsakova St., 40007 Sumy, UkraineT. G. Masaryk Water Research Institute, Public Research Institution, Podbabská 2582/30, 16000 Prague, Czech RepublicInternational Innovation and Applied Center “Aquatic Artery”, Sumy State University, 2, Rymskogo-Korsakova St., 40007 Sumy, UkraineInternational Innovation and Applied Center “Aquatic Artery”, Sumy State University, 2, Rymskogo-Korsakova St., 40007 Sumy, UkraineFaculty of Tropical AgriSciences, Czech University of Life Sciences Prague, Kamýcká 129, 16500 Prague, Czech RepublicThis study aimed to improve the control system of the biological stage of wastewater treatment using the quality control information system to support the concept of environmental efficiency management. In this case, the object of the study was the treatment facilities of Sumy city (Ukraine). For automatic control of wastewater quality, pH, oxidation reduction potential (ORP), electrical conductivity, and temperature indicators were taken, as well as hydrobiological analysis of activated sludge and mathematical modelling. The pH of wastewater at the input system has systematically unacceptable values (above 8.5 were recorded). Unacceptable concentrations of sulphur-containing toxicants arrive at the entrance of treatment facilities (0.22–1.3 mg/L). The response of activated sludge biocenosis to increasing concentrations of hydrogen sulphide in wastewater was analysed. Furthermore, a mathematical model of monoculture population growth, with two factors that affect population growth (nutrient concentration and monoculture production concentration), was implemented for the initial assessment of possible negative effects on wastewater treatment. The differential equation of the population dynamics of the <i>i</i>-th species of microorganisms in activated sludge was described. The applied system of automated monitoring of wastewater parameters with expert assessment of activated sludge and a unified mathematical model of approaches allows for a complex system of decision-making support to be realised. However, this requires the construction of mathematical models that would take into account the cause–effect relations that operate under conditions of incomplete technological information and the potential presence of emergencies due to natural disasters and military activities.https://www.mdpi.com/2073-4441/15/21/3744wastewater treatmentautomatic controltoxicantsmathematical modellingactivated sludge
spellingShingle Dmitriy Alekseevsky
Yelizaveta Chernysh
Vladimir Shtepa
Viktoriia Chubur
Lada Stejskalová
Magdalena Balintova
Manabu Fukui
Hynek Roubík
Enhancing Ecological Efficiency in Biological Wastewater Treatment: A Case Study on Quality Control Information System
Water
wastewater treatment
automatic control
toxicants
mathematical modelling
activated sludge
title Enhancing Ecological Efficiency in Biological Wastewater Treatment: A Case Study on Quality Control Information System
title_full Enhancing Ecological Efficiency in Biological Wastewater Treatment: A Case Study on Quality Control Information System
title_fullStr Enhancing Ecological Efficiency in Biological Wastewater Treatment: A Case Study on Quality Control Information System
title_full_unstemmed Enhancing Ecological Efficiency in Biological Wastewater Treatment: A Case Study on Quality Control Information System
title_short Enhancing Ecological Efficiency in Biological Wastewater Treatment: A Case Study on Quality Control Information System
title_sort enhancing ecological efficiency in biological wastewater treatment a case study on quality control information system
topic wastewater treatment
automatic control
toxicants
mathematical modelling
activated sludge
url https://www.mdpi.com/2073-4441/15/21/3744
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