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Ostoich M.,Veneto Regional Environmental Prevention and Protection Agency ARPAV | Carcereri M.,ARPAV
Water Science and Technology | Year: 2011

This paper discusses the problem of the identification and definition of the urban agglomerations in accordance with Directive 91/271/EC. The aim of this identification is to guarantee a satisfactory level of treatment for urban wastewaters and the achievement of the quality objectives for water bodies. The methodology employed, taking into account the existing planning tools in the water service sector, has been based on official national census data, on the Water Protection Plan, on the predictions of Water Service Plans prepared by each Water Authority and on detailed indications provided by the Authorities themselves. The proposed approach, obtained with geographic information systems applications and the calculation of pollution loads, is described and tested in the Veneto region, Italy. In the final part of the paper some considerations on the results obtained are presented and discussed. © IWA Publishing 2011. Source

Ostoich M.,Veneto Regional Environmental Prevention and Protection Agency ARPAV | Serena F.,University of California at Santa Barbara | Falletti L.,University of Padua | Fantoni A.,SAGIDEP Srl
Water Science and Technology | Year: 2013

Directive 2000/60/EC requires the achievement of a 'good chemical status' for surface water within pre-established dates. Disinfection is needed to achieve compulsory final microbial limit values (in Italy for wastewater discharges the parameter Escherichia coli - EC - is imposed by law with a maximum limit value of 5,000 cfu/100 mL). Liquid waste and disinfection by-products must be considered when designing appropriate monitoring of dangerous substances; the specific classes of substances must be investigated according to the typology of received wastewaters and liquid wastes (where applicable) and specific analytical techniques, with Limit of Detection (LOD) lower than the limit values, must be applied; the difficulties faced by national and regional environmental control Agencies is that these techniques have to be applied during ordinary activity and not only for research purposes. The study aims to present the control of dangerous substances, as a screening view, in wastewater treatment plant (WWTP) discharges in the province of Venice (Northern Italy) for the period 2007-2010 based on available data from institutional controls. In addition, the wastewater disinfection process with ozone applied to a medium size WWTP (45,000 Population Equivalents) is presented as a case study, with a view to assessing the microbiological abatement efficacy and the presence of dangerous substances. Discharge quality of the WWTPs in the province of Venice presented mean values that were higher than the LOD, but only for certain metals. For the Paese plant, zinc and chloroform were the only micro-pollutants detected with a higher level than the LOD. From microbiological data in the period 2006-2011 the disinfection abatement efficiency for Paese was, in most cases above 99% for EC, faecal coliform (FC), faecal streptococci (FS) while efficiency was slightly lower for total coliform (TC); however, the proposed criterion aimed at respecting 99.99% abatement was not completely satisfied. Therefore, despite the high organic and industrial load of the considered plant and the need to find an alternative system for chlorine, as chlorine disinfection has been banned in the Veneto region since December 2012, ozone efficiency is not completely satisfactory and other systems such as peracetic or performic acids and UV systems must be considered. © IWA Publishing 2013. Source

Ostoich M.,Veneto Regional Environmental Prevention and Protection Agency ARPAV | Zanetto G.,University of Venice
Management of Environmental Quality | Year: 2014

Purpose: Tanneries present heavy environmental impacts due to air emissions. Specific quality objectives are fixed by European Directives concerning air and, in particular, volatile organic compounds. The purpose of this paper is to present a proposal for the management of air emissions with a view to achieve quality standards in the Italy’s largest tannery district by means of a tradable emissions permits (TEPs) system. Design/methodology/approach: A methodological approach is presented and analysed. The proposed system is based on the “bubble” configuration, which appears to be an effective and feasible application based on the total maximum daily load criterion, supported by the air quality standards or the environmental risk assessment (ERA) procedure. Findings: The TEP system favours technological improvements in the reduction of emissions. The system may not provide a solution to the unpleasant odours deriving from the tanneries, but its application supported by ERA will make it possible to define the admissible levels of air pollution and improve the general state of air quality. Research limitations/implications: Although the study is not exhaustive and requires further investigation in the economic, legal, administrative and air pollution sectors, it does give the basic elements for a preliminary analysis. The evident lack of experimental data concerning weather and climatic features, intrinsic to exposure assessment, has been pointed out. Originality/value: This study proposes a methodological pathway aimed at defining the system of tradable permits by verifying the existence and availability of the necessary data. The proposed TEP system can be extended to other homogeneous industrial districts with an appropriate selection of one or more critical parameters. © 2014, Emerald Group Publishing Limited. Source

Ostoich M.,Veneto Regional Environmental Prevention and Protection Agency ARPAV | Serena F.,University of Chieti Pescara | Tomiato L.,University of Chieti Pescara
Journal of Integrative Environmental Sciences | Year: 2010

This article presents the problems faced by wastewater treatment plant (WWTP) controls and the organization of consequential activities, giving priority to those stipulated by the regional environmental protection agencies through a hierarchical assessment according to the environmental importance of the pressure sources. The European Recommendation 2001/331/EC bases the environmental controls of industrial sites and WWTPs on an integrated approach surpassing the simple analytic control at the discharge point in the receiving water body. This integrated approach requires documentary, technical, management, and analytic controls. In the last few years, the Veneto Regional Environmental Prevention and Protection Agency (ARPAV-Italy) has developed and applied a protocol and checklist for the implementation of the European Recommendation for WWTPs. The checklist includes the functionality assessment of the WWTP in the cases of discharge control delegation to the plant management as consented in Annex 5, the third part of the Italian Decree 3/04/2006 n. 152. In this article, the general framework of environmental controls on public WWTPs in the Veneto region is described, presenting a proposal for integrated control and the assessment of the behavior of the WWTP discharges, with reference to the stipulated limit values, along with statistical multivariate analysis, with the aim of developing an integrated sustainable interactive management approach (Veerbek and Wind, 2001, Water Resource Management 15:403-421). © 2010 Taylor & Francis. Source

Ostoich M.,Veneto Regional Environmental Prevention and Protection Agency ARPAV | Carcereri M.,Veneto Regional Environmental Prevention and Protection Agency ARPAV
Management of Environmental Quality | Year: 2013

Purpose: Water protection is one of the primary objectives of the Water Framework Directive 2000/60/EC. The paper aims to identify suitable indices for water quality and specifically for water used for irrigation in the Fratta-Gorzone river basin (Northern Italy) affected by discharges from the largest tannery district in Italy. Design/methodology/approach: The DPSIR framework is proposed here for the development of a water quality monitoring and control system. A set of indices is applied as a comprehensive environmental management system in order to: assess the degree of achievement of water quality objectives; identify measures to be applied to pressure sources; verify the extent of application of local measures. Findings: The highest values measured in the river Fratta-Gorzone refer to the following parameters: chemical oxygen demand (COD), chlorides, sulphates, chromium, E. coli and, in some cases, other parameters. At basin level, the objectives set by the WFD and by local regulations must be achieved by applying appropriate discharge limit values. Water quality for irrigation use and the impact of the tannery district is critically presented and discussed according to available data, and refers to the monitoring project which was developed as a result. Practical implications: The inflow from an irrigation channel, which conducts freshwater from the Adige river to the Fratta-Gorzone river and empties just beyond the discharge point for effluent from the tannery district, favoured a general improvement in river water quality, as a result of dilution, particularly for irrigation purposes. Originality/value: An environmental management system is outlined, with a proposal for a specific set of indices to be used as part of the monitoring and control activities for the integrated management of river basins, especially those affected by industrial tannery discharges. © Emerald Group Publishing Limited. Source

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