Methodological approach for the optimization of drinking water treatment plants' operation: a case study

Sorlini, Sabrina; Collivignarelli, Maria Cristina; Castagnola, Federico; Crotti, Barbara Marianna; Raboni, Massimo

doi:10.2166/wst.2014.503

Cited by 24 publications

(9 citation statements)

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“…The formation of foams can also reduce the overall WWTP performance, therefore in order to optimize its management, causes, quantification and removal of foams must be investigated [12,20]. As already expressed in literature [31,32] for drinking water treatment plants, also for WWTPs the same approach of monitoring and optimization could be applied. This would guarantee to cope with the increasing presence of industrial contaminants in wastewaters [33][34][35] and would allow producing a sludge that respects strict limits for the reuse in agriculture [36,37].…”

Section: Introductionmentioning

confidence: 99%

Foams in Wastewater Treatment Plants: From Causes to Control Methods

et al. 2020

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The formation of persistent foams can be a critical problem in wastewater treatment plants (WWTPs) as it could lead to a series of operational problems, especially the reduction of the overall system performance. To date, the effects of foaming in the WWTPs are a problem that is currently very common and shared, but which to date is treated mainly only at the management level and still too little studied through a globally shared scientific method: the complexity of the phenomenon and the systems have led to numerous partially contradictory descriptions and hypotheses over the years. The goal must be to suggest future research directions and indicate promising strategies to prevent or control the formation of foams in WWTPs. This study examines and investigates the problem of foams by a methodological approach of research through a review on the state of the art: the factors influencing the formation of foams are described first (such as surfactants and/or extracellular polymeric substances (EPSs)), then the known methods for the evaluation of foaming, both direct and indirect, are presented, with the aim of identifying the correct and best (from the management point of view) control and/or prevention strategies to be applied in the future in WWTPs.

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Section: Introductionmentioning

confidence: 99%

Foams in Wastewater Treatment Plants: From Causes to Control Methods

et al. 2020

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“…An example of a methodological scheme for the control and optimization of drinking water treatment plant (DWTP) performance is reported in Sorlini et al (2015a). DWTP monitoring to highlight critical issues, with the addition of laboratory and/or field tests (so-called experimental performing tests), should be adopted as a routine procedure for the "good management" of a DWSS.…”

Section: Introductionmentioning

confidence: 99%

Water Safety Plan for drinking water risk management: the case study of Mortara (Pavia, Italy)

Sorlini¹,

Biasibetti²,

Abbà³

et al. 2017

Rev. ambiente água

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The Water Safety Plan (WSP) approach is an iterative method focused on analyzing the risks of water contamination in a drinking water supply system, from catchment to consumer, in order to protect human health. This approach is aimed at identifying and drastically reducing water contamination in the entire drinking water system, through the identification and mitigation or, if possible, elimination of all factors that may cause a chemical, physical, microbiological and radiological risk for water. This study developed a proposal of WSP for the drinking water supply system (DWSS) of Mortara, Italy, in order to understand which are the preliminary evaluation aspects to be considered in the elaboration of a WSP. The DWSS of Mortara (a town of 15,500 inhabitants, located in northern Italy) consists of three drinking water treatment plants (DWTPs), considering the following main contaminants: arsenic, iron, manganese and ammonia. Potential hazardous events and associated hazards were identified in each part of the water supply system. The risk assessment was carried out following the semi-quantitative approach. The WSP proposal for Mortara was very useful not only as a risk mitigation approach, but also as a cost-effective tool for water suppliers. Furthermore, this approach will reduce public health risk, ensure a better compliance of water quality parameters with regulatory requirements, increase confidence of consumers and municipal authorities, and improve resource management due to intervention planning. Further, some new control measures are proposed by the WSP team within this work.Keywords: arsenic, drinking water, risk assessment, risk management, water safety plan. desde a captação ao consumidor, visando à proteçãoda saúde humana. Objetiva-se identificar e reduzir drasticamente a contaminação da água em todo o sistema de água potável pela identificação e mitigação ou, se possível, a eliminação de todos os fatores que podem causar um risco químico, físico, microbiológico e radiológico para a água. Este estudo desenvolveu uma proposta de PSA para o sistema de abastecimento de água potável de Mortara (Itália), a fim de compreender quais são os aspectos de avaliação preliminar a serem considerados na elaboração de um PSA. O sistema de abastecimento de água potável de Mortara (uma cidade de 15.500 habitantes, localizada no norte da Itália) consiste em três estações de tratamento de água, considerando os seguintes contaminantes principais: arsênio, ferro, manganês e amônia. Eventos perigosos potenciais e riscos relacionados foram identificados em cada parte do sistema de abastecimento de água. A avaliação do risco foi realizada seguindo a abordagem semi-quantitativa. A proposta do PSA para o sistema de abastecimento de água potável de Mortara contribuirá para reduzir os riscos à saúde pública, assegurar um melhor cumprimento dos parâmetros de qualidade da água, dos requisitos regulamentares, do aumento da confiança dos consumidores e autoridades municipais, assim como melhorar a gestão de recursos devido ...

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“…In more detail, the first experiences of the WSP implementation in Italy (Sorlini et al, 2015a; have led to a detailed procedure for its application, based on the following steps: 9. planning and implementation of periodic WSP reviews; 10. revision of the WSP as the result of an accident; 11. development of support programs.…”

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confidence: 99%

“…However, the success of the procedure is based upon the "technical phases" related to the system description (step 2) and to the knowledge of its performance and optimization (steps 5, 6, 7, 8, 9). An example of methodological plan for the control and optimization of the performance of a water treatment plant is presented in Figure 1 (from Sorlini et al, 2015a); it was the basis for the operator's implementation of the WSP. In that plan, or in similar plans which were applied in Italy (Crotti et al, 2012), the first part is routine monitoring (Phase 1), the outcomes of which are examined through intensive monitoring (Phase 2), which allows a focus on problems that are then highlighted, also in their quantitative aspects, by means of laboratory and/or field tests (Phase 3).…”

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Water safety: one of the primary objectives of our time

Collivignarelli¹

2017

Rev. ambiente água

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This article discusses the benefits of an innovative approach to the problem of water security introduced by WHO in 2004, through the establishment of the Water Safety Plan (WSP). It was recently included in Commission Directive (EU) 2015/1787 -October 6, 2015 -the implementation of which is expected in the EU countries by 27 October 2017. The WSP is the most effective means of consistently ensuring the safety of a drinking water supply. The method is based on the use of a comprehensive risk assessment and risk management approach that involves all steps in water supply from catchment to consumer. The knowledge acquired by some experiences of WSP application, both in Italy and in countries with limited resources, is proving the effectiveness of the model as the best way to manage drinking water systems and protect public health.

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Methodological approach for the optimization of drinking water treatment plants' operation: a case study

Cited by 24 publications

References 5 publications

Foams in Wastewater Treatment Plants: From Causes to Control Methods

Foams in Wastewater Treatment Plants: From Causes to Control Methods

Water Safety Plan for drinking water risk management: the case study of Mortara (Pavia, Italy)

Water safety: one of the primary objectives of our time

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