Evaluation of the Efficiency of Removing Sanitation Indicators in the Process of Biological Wastewater Treatment

Paśmionka, Iwona

doi:10.15576/asp.fc/2020.19.2.15

Cited by 4 publications

(3 citation statements)

References 12 publications

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“…With high temperature and rather long retention time in the digester, pathogenic microorganisms will be reduced by between 80% and 100% after being treated (Paśmionka, 2020). Coliform density measured after digester ranges between 28.2% and 85.3%.…”

Section: Efficiency Of the Anaerobic Digestermentioning

confidence: 99%

Assessment of Livestock Wastewater Treatment Efficiency When Using an Anaerobic Digester Combined With a Biological Pond in Nam Anh, Nghe An, Vietnam

Phan¹,

Strużyński²,

Kowalik³

et al. 2022

ASP.FC

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Aim of the study: This study focuses on assessing the efficiency of the anaerobic digester combined with biological pond to provide overview data and can be used as a reference for similar studies in Nghe An province. Material and methods: Wastewater properties at 3 stages of livestock wastewater treatment process (input, after digester, after biological pond) in Nam Anh were investigated. A total of 81 samples were collected across 9 locations between March and May 2020. Shapiro-Wilk test (α = 0.05), Kruskal-Wallis test and Dunn test (α = 0.05) was preformed to estimate the significance differences. Cluster analysis was utilized to compare the parameters between the sampling locations and to classify the locations. Results and conclusions: The results showed that all parameters exceeded the allowable limit many times specified by QCVN 40:2011/BTNMT and TCN 678 – 2006. The wastewater after being treated by anaerobic digester was significantly reduced. The treatment efficiency for BOD5 was 66-73%, COD was 74-80%, SS reached 78-84%, reaching 10-27% for TN, 7-25% for TP and coliform ranged from 28.2-85.3%. Wastewater after being treated through the digester combined with the biological pond had a very high treatment efficiency: 95 - 97% for BOD5, 96- 97% with COD, SS was up to 96-97%, 45 - 57% with TN, 35 - 70% with TP and coliforms reached 77.4 - 98.4%. The treatment efficiency had a linear correlation between object locations. Applying anaerobic digestion in combination with biological pond has proven to be a highly effective solution, and should be prioritized in the treatment of livestock wastewater.

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Section: Efficiency Of the Anaerobic Digestermentioning

confidence: 99%

Assessment of Livestock Wastewater Treatment Efficiency When Using an Anaerobic Digester Combined With a Biological Pond in Nam Anh, Nghe An, Vietnam

Phan¹,

Strużyński²,

Kowalik³

et al. 2022

ASP.FC

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show abstract

Section: Efficiency Of the Anaerobic Digestermentioning

confidence: 99%

Untitled

2022

ASP.FC

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Aim of the studyThis study focuses on assessing the efficiency of an anaerobic digester combined with a biological pond in order to provide overview data that can be used as a reference for similar studies in Nghe An province. Material and methodsWastewater properties at 3 stages of livestock wastewater treatment process (at the input, after passing through the digester, after passing through the biological pond) in Nam Anh were investigated. A total of 81 samples were collected across 9 locations between March and May 2020. Shapiro-Wilk test (α = 0.05), Kruskal-Wallis test and Dunn test (α = 0.05) were preformed to estimate the significance differences. Cluster analysis was applied with the view to comparing the parameters between the sampling locations, and in order to classify the respective locations. Results and conclusionsThe results have shown that all parameters by far exceeded the allowable limit specified by the QCVN 40:2011/BTNMT and TCN 678-2006 norms. The wastewater after being treated by anaerobic digester was significantly reduced. The treatment efficiency for BOD5 was 66-73%; for COD, it was 74-80%; 78-84% for SS; 10-27% for TN; 7-25% for TP; and for coliform, it ranged between 28.2-85.3%. Wastewater after being treated through the digester combined with the biological pond displayed a very high treatment efficiency: 95-97% for BOD5; 96-97% for COD; up to 96-97% for SS, 45-57% for TN; 35-70% for TP; between 77.4-98.4% for coliforms. The treatment efficiency demonstrated a linear correlation between object locations. Applying an anaerobic digester in combination with a biological pond has proven to be a highly effective solution, which should be prioritized in the treatment of livestock wastewater.

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“…Municipal and industrial wastewater is a carrier of many dangerous organisms and substances, which include parasites and pathogenic organisms [ 1 , 2 , 3 ], toxic substances and compounds disturbing the natural biological balance in treated sewage receivers by increasing the saprobicity and eutrophication of these waters [ 4 , 5 , 6 ]. Such wastewater can be neutralized by mechanical–biological or mechanical–biological–chemical methods of treatment with the use of activated sludge.…”

Section: Introductionmentioning

confidence: 99%

Influence of COD in Toxic Industrial Wastewater from a Chemical Concern on Nitrification Efficiency

Paśmionka

Herbut

Kaczor

et al. 2022

IJERPH

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COD is an arbitrary indicator of the content of organic and inorganic compounds in wastewater. The aim of this research was to determine the effect of COD of industrial wastewater on the nitrification process. This research covered wastewater from acrylonitrile and styrene–butadiene rubbers, emulsifiers, polyvinyl acetate, styrene, solvents (butyl acetate, ethyl acetate) and owipian® (self-extinguishing polystyrene intended for expansion) production. The volume of the analyzed wastewater reflected the active sludge load in the real biological treatment system. This research was carried out by the method of short-term tests. The nitrification process was inhibited to the greatest extent by wastewater from the production of acrylonitrile (approx. 51%) and styrene–butadiene (approx. 60%) rubbers. In these wastewaters, nitrification inhibition occurred due to the high COD load and the presence of inhibitors. Four-fold dilution of the samples resulted in a two-fold reduction in the inhibition of nitrification. On the other hand, in the wastewater from the production of emulsifiers and polyvinyl acetate, a two-fold reduction in COD (to the values of 226.4 mgO2·dm−3 and 329.8 mgO2·dm−3, respectively) resulted in a significant decrease in nitrification inhibition. Wastewater from the production of styrene, solvents (butyl acetate, ethyl acetate) and owipian® inhibited nitrification under the influence of strong inhibitors. Lowering the COD value of these wastewaters did not significantly reduce the inhibition of nitrification.

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Evaluation of the Efficiency of Removing Sanitation Indicators in the Process of Biological Wastewater Treatment

Cited by 4 publications

References 12 publications

Assessment of Livestock Wastewater Treatment Efficiency When Using an Anaerobic Digester Combined With a Biological Pond in Nam Anh, Nghe An, Vietnam

Assessment of Livestock Wastewater Treatment Efficiency When Using an Anaerobic Digester Combined With a Biological Pond in Nam Anh, Nghe An, Vietnam

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Influence of COD in Toxic Industrial Wastewater from a Chemical Concern on Nitrification Efficiency

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