Impact of human factors on threats in sewage treatment plants

Łój-Pilch, Magdalena; Zakrzewska, Anita; Zielewicz, E.

doi:10.1201/9781351174664-242

Cited by 3 publications

(12 citation statements)

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“…Figure 3 presents 32 events that occurred 114 times. Almost all of the identified hazards are in the area of acceptable risk (30 events that occurred 72 times [28]), which proves the proper functioning of the municipal wastewater treatment plant. Only two events (emergence of filamentous bacteria in an activated sludge chamber, which occurred 41 times, and electrical power outage, which occurred once [28]), posed a greater threat to operation of the treatment plant, and therefore, they are in the area of tolerated risk.…”

Section: Obtained Results and Discussionmentioning

confidence: 83%

Section: Obtained Results and Discussionmentioning

confidence: 99%

“…Based on historical data collected by the operator of the sewage treatment plant from 2014 to 2016, risk identification and assessment were carried out. Our previous work [28] presents the risk identification that is assessed in the present paper ( Table 1). The occurring risk factors (inside, outside, internal, external, latent, explicit) were identified, and the type of risk event (qualitative, operational, ecological, financial) was recognized according to the classification by Iwanejko and Rybicki [16].…”

Section: Obtained Results and Discussionmentioning

confidence: 99%

“…The occurring risk factors (inside, outside, internal, external, latent, explicit) were identified, and the type of risk event (qualitative, operational, ecological, financial) was recognized according to the classification by Iwanejko and Rybicki [16]. In the process of risk identification [28], 32 different threats were identified, which occurred 114 times at different frequencies. All of these events were divided according to the frequency of their occurrence, as seen in Table 2, and on the basis of their specific type of risk, a quantitative loss value was assigned to them (Table 3).…”

Section: Obtained Results and Discussionmentioning

confidence: 99%

“…In comparison with the treatment plant presented in this paper (SWT-1), there were bar screens instead of sifters, and SWT-2 carried out a chemical dephosphatation process that does not occur at SWT-1. No events for sifters were classified as a tolerated risk for bar screens; there were two such events that occurred 14 times (large fat and meat dump that occurred once and clogging of bars that occurred 13 times [27,28]). In both cases, one event in the activated sludge chamber was classified as a tolerated risk.…”

Section: Obtained Results and Discussionmentioning

confidence: 99%

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Analysis of Risk Assessment in a Municipal Wastewater Treatment Plant Located in Upper Silesia

Łój-Pilch

Zakrzewska

2019

Water

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Nowadays, risk management applies to every technical facility, branch of the economy, and industry. Due to the characteristics of the analyzed wastewater treatment plant and the specificity of the used processes, one must approach different areas individually. Municipal sewage treatment plants are technical facilities; they function as enterprises and are elements of larger systems-water distribution and sewage disposal. Due to their strategic importance for the environment and human beings, it is essential that they are covered by risk management systems. The basic stage of risk management is its assessment. On its basis, strategic decisions are made and new solutions are introduced. Constant monitoring of the operation of a treatment plant allows for assessment of whether actions taken are correct and whether they cause deterioration of the quality of sewage. In our work, we present a method of risk assessment based on historical data for an existing facility and obtained results.

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Section: Obtained Results and Discussionmentioning

confidence: 83%

Section: Obtained Results and Discussionmentioning

confidence: 99%

Section: Obtained Results and Discussionmentioning

confidence: 99%

Section: Obtained Results and Discussionmentioning

confidence: 99%

Section: Obtained Results and Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Analysis of Risk Assessment in a Municipal Wastewater Treatment Plant Located in Upper Silesia

Łój-Pilch

Zakrzewska

2019

Water

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Risk assessment in municipal wastewater treatment plant

2019

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Each technical facility is exposed to a risk that will hinder or prevent its proper functioning. Risk assessment is a component of the risk management process in municipal wastewater treatment plants, the purpose of which is to reduce the occurrence of events as well as their resulting effects, which adversely affect the operation of the treatment plant. The authors, having based their work on the identification of risk-related phenomena, estimated the value of risk and determined its acceptability. The result of the work was to obtain a risk matrix – in other words, a risk map with a designated hierarchy. This could then be used as a basis to determine the level of risk that an event triggered. This allows for faster response to risky situations and an optimal selection of remedies.

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Risk Assessment and Sustainability of Wastewater Treatment Plant Operation

Tušer¹,

Oulehlová

2021

Sustainability

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Water and water management, which also includes wastewater treatment plants (WWTPs), are considered essential elements critical infrastructure. A disruption of their operation can result in the discharge of wastewater into the environment without having been adequately treated. This can cause health problems, contamination of soil, groundwater and surface water, etc. In order to provide operational safety and sustainability of WWTP operation, it is necessary to establish protection against potential risk activation, together with risk minimization and enhanced preparedness to address the risks. The article deals with the application of risk management stages on the selected object of the municipal WWTP facility in the form of a case study. The risk identification phase consisted of the identification of assets and risks. The assets were grouped together due to the complexity of the WWTP operation. A combination of methods, a safety audit, a checklist and semi-structured interviews were used to identify the risks in three iterations. A risk register was created as a result of the risk identification phase. Subsequently, a risk analysis was carried out, in which the scenarios of the risk impact on the assets were examined, the index levels of probability and impacts were determined, and the risk estimate was performed. The Bowtie Analysis Method was used to illustrate the causes and consequences for one of the critical risks. The result of the study is the risk evaluation identified undesirable and unacceptable risks for which risk management methods were proposed

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Impact of human factors on threats in sewage treatment plants

Cited by 3 publications

References 0 publications

Analysis of Risk Assessment in a Municipal Wastewater Treatment Plant Located in Upper Silesia

Analysis of Risk Assessment in a Municipal Wastewater Treatment Plant Located in Upper Silesia

Risk assessment in municipal wastewater treatment plant

Risk Assessment and Sustainability of Wastewater Treatment Plant Operation

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