scholarly journals Receiving water body quality assessment: an integrated mathematical approach applied to an Italian case study

2011 ◽  
Vol 14 (1) ◽  
pp. 30-47 ◽  
Author(s):  
Angela Candela ◽  
Gabriele Freni ◽  
Giorgio Mannina ◽  
Gaspare Viviani
Keyword(s):  
Water Quality ◽  
Water Body ◽  
Assessment Tool ◽  
Wastewater Treatment Plants ◽  
Pollution Sources ◽  
Integrated System ◽  
Basin Scale ◽  
Point Pollution ◽  
Receiving Water ◽  
Modelling Approach

This study presents a basin-scale approach to the analysis of receiving water body quality considering both point and non-point pollution sources. In particular, this paper describes an extensive data gathering campaign carried out in the Nocella catchment, which is an agricultural and semi-urbanised basin located in Sicily, Italy. Two sewer systems, two wastewater treatment plants and a river reach were monitored during both dry and wet weather periods. A mathematical model of the entire integrated system was also created. Specifically, a detailed modelling approach was developed by employing three well known models: Storm Water Management Model, GPS-X and Soil and Water Assessment Tool. The study proposed a comprehensive modelling approach to analyse the importance of diffuse and concentrated polluting sources on receiving water quality. The study demonstrated that point pollution loads can be more influential during wet periods by an order of magnitude compared with the dry weather period. In the long term, diffuse and point pollution sources were demonstrated to affect river quality and they have both to be considered. The use of the proposed integrated model-based approach may support water managers in decision making about which strategies should be preferred with the aim of water quality preservation.

Development of Dialog System Model for Eutrophication Control between Discharging River Basin and Receiving Water Body – Case Study of Lake Sagami (Japan)

1989 ◽  
Vol 21 (12) ◽  
pp. 1821-1824
Author(s):  
M. Suzuki ◽  
K. Chihara ◽  
M. Okada ◽  
H. Kawashima ◽  
S. Hoshino
Keyword(s):  
Water Management ◽  
Water Quality ◽  
Expert System ◽  
River Basin ◽  
Water Body ◽  
Water Bodies ◽  
Quality Data ◽  
Pollution Load ◽  
Water Quality Data ◽  
Receiving Water

A computer program based on expert system software was developed and proposed as a prototype model for water management to control eutrophication problems in receiving water bodies (Suzuki etal., 1988). The system has several expert functions: 1. data input and estimation of pollution load generated and discharged in the river watershed; 2. estimation of pollution load run-off entering rivers; 3. estimation of water quality of receiving water bodies, such as lakes; and 4. assisting man-machine dialog operation. The program can be used with MS-DOS BASIC and assembler in a 16 bit personal computer. Five spread sheets are utilized in calculation and summation of the pollutant load, using multi-windows. Partial differential equations for an ecological model for simulation of self-purification in shallow rivers and simulation of seasonal variations of water quality in a lake were converted to computer programs and included in the expert system. The simulated results of water quality are shown on the monitor graphically. In this study, the expert system thus developed was used to estimate the present state of one typical polluted river basin. The river was the Katsura, which flows into Lake Sagami, a lake dammed for water supply. Data which had been actually measured were compared with the simulated water quality data, and good agreement was found. This type of expert system is expected to be useful for water management of a closed water body.

In-line river monitoring – new challenges and opportunities

2004 ◽  
Vol 50 (11) ◽  
pp. 67-72 ◽  
Author(s):  
A. Pressl ◽  
S. Winkler ◽  
G. Gruber
Keyword(s):  
Water Management ◽  
Water Quality ◽  
Wastewater Treatment Plants ◽  
Indirect Measurement ◽  
Water Bodies ◽  
Danube River ◽  
Quality Data ◽  
Water Quality Data ◽  
Challenges And Opportunities ◽  
Receiving Water

Water management becomes a complex issue when considering the large number of water-rights-of-use like drinking water production, recreation, receiving water, transport on and ecological quality of the water bodies. Recent changes in the legal requirements concerning water management on European scale (EC Water Framework Directive, 2000/60/EC) highlighted the need for appropriate means for monitoring water quality and exchange of water quality data. Indirect measurement of water quality using surrogate parameters (chemical and physical-chemical parameters) can be automated at a high accuracy level. This was shown over the past years by national and international research projects. In 2001 such a research project has started in Austria focusing on the installation and operation of a pilot water quality network, which is suitable for application at several points of interest of water management, i.e. sewer networks, wastewater treatment plants and receiving water bodies. The paper describes the operational problems and experiences of collecting data over a period of one year in the Danube River downstream of Vienna. The sensors are installed in situ, directly in the river, without any bypass system. The first evaluation of the measurements shows that the values are reliable and therefore applicable to further interpretations.

scholarly journals Spatiotemporal Correlations Between Water Quality And Microbial Community of Typical Inflow River Into Taihu Lake, China

2021 ◽  
Author(s):  
Yajie Zhang ◽  
Ye Zhang ◽  
Lecheng Wei ◽  
Mengyan Li ◽  
Weitang Zhu ◽  
...  
Keyword(s):  
Water Quality ◽  
Microbial Community ◽  
Microbial Communities ◽  
Taihu Lake ◽  
Wastewater Treatment Plants ◽  
Ammonia Nitrogen ◽  
Pollution Sources ◽  
Storm Water ◽  
Urban Wastewater Treatment ◽  
The Impact

Abstract Changxing River, which is a typical inflow river into the Taihu Lake and occurs severe algae invasion, is selected to study the effect of different pollution sources on the water quality and ecological system. Four types of pollution sources, including the estuary of Taihu Lake, discharge outlets of urban wastewater treatment plants, storm water outlets, and non-point source agricultural drainage areas are chosen, and next-generation sequencing and multi-variate statistical analyses are used to characterize the microbial communities and reveal their relationship with water physicochemical properties. Results showed that ammonia nitrogen (NH4+-N), total nitrogen (TN), and total phosphorus (TP) are the main pollutant in Changxing River, especially at storm water outlets. At the same time, the diversity of microbial communities was the highest in the summer, and dominant phyla included Proteobacteria (40.9%), Bacteroidetes (21.0%) and Euryarchaeota (6.1%) under the condition of algal bloom. Water temperature (T), air pressure (P), concentrations of TP and CODMn were the important variables for the succession of microbial community. From the perspective of different pollution types, relative abundances of Microcystis and Nostocaceae at the estuary of Taihu Lake were correlated positively with dissolved oxygen (DO) and pH, and Pseudomonas and Arcobacter were correlated positively with concentrations of TN and nitrate nitrogen (NO3--N) at storm water outlets. The results provide a reference for the impact of pollution types on river microbial ecosystem under complex hydrological condition and a guidance for the selection of restoration techniques for polluted rivers entering an important lake.

scholarly journals Variation in palladium and water quality parameters and their relationship in the urban water environment

2020 ◽  
Author(s):  
Yuyan Liu ◽  
Fangfang Ding ◽  
Caiye Ji ◽  
Dan Wu ◽  
Lin Wang ◽  
...  
Keyword(s):  
Water Quality ◽  
Correlation Coefficient ◽  
Water Body ◽  
Wet Deposition ◽  
Water Environment ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Urban Water ◽  
Rainfall Runoff ◽  
Receiving Water

Abstract Palladium (Pd) is widely used in vehicle exhaust catalysts (VECs) to reduce toxic emissions from motor vehicles. The study aimed to quantitatively determine Pd content and water quality parameters, to analyze the variation differences and to explore the effect of water quality parameters on Pd content in the urban water environment system (wet deposition–rainfall runoff–receiving water body–estuary) of the city of Haikou, Hainan Island, China. The method used in this study included microwave digestion under high pressure and temperature, analysis by inductively coupled plasma mass spectrometry, quality control of the experimental procedure and guaranteed recovery (85% −125%). The results showed that the dissolved Pd average content in the urban water environment system was the highest in rainfall runoff (4.93 ng/L), followed by that in the receiving water body (4.56 ng/L), and it was the lowest in wet deposition (0.1 ng/L). The suspended Pd average content was the highest in the estuary (2.83 ng/L), followed by that in rainfall runoff (1.26 ng/L), and it was the lowest in wet deposition (6 × 10−4 ng/L). The particle–water partition ratio of the estuary Pd was the highest (1.26), followed by that of Pd in rainfall runoff (0.26). The particle–water partition ratio of the wet deposition Pd was the lowest (6 × 10−3). The dissolved Pd was correlated with the pH, Cl−, and total suspended solids (TSS) (correlation coefficient = 0.52, −0.68, 0.39, p < 0.05; regression coefficient = 1.27, −1.39, 0.01). The suspended Pd was only correlated with Cl− and TSS (correlation coefficient = −0.36, 0.76, p < 0.05; regression coefficient = −1.45, 0.01). Cl− and TSS were the most closely related to Pd in the water environment system. Although individual factors such as pH, Cl−, and TSS had certain migration and transformation effects on Pd in the wet deposition–rainfall runoff–receiving water body–estuary system, the probability of strong correlations was not high. In particular, Eh was not related to the dissolved nor suspended Pd content (correlation coefficient = 0.14, 0.13), which may be due to the synergistic effect of the multiple physical factors on Pd. This study was helpful to better understand the environmental behavior of Pd and provided important theoretical support for the prevention and protection against urban water environmental pollution.

scholarly journals Effects of Sewage Discharge on Trophic State and Water Quality in a Coastal Ecosystem of the Gulf of California

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Héctor Hugo Vargas-González ◽  
José Alfredo Arreola-Lizárraga ◽  
Renato Arturo Mendoza-Salgado ◽  
Lía Celina Méndez-Rodríguez ◽  
Carlos Hernando Lechuga-Deveze ◽  
...  
Keyword(s):  
Water Quality ◽  
Coastal Water ◽  
Environmental Quality ◽  
Water Body ◽  
Gulf Of California ◽  
Trophic State ◽  
Coastal Ecosystem ◽  
Urban Wastewater ◽  
Receiving Water

This paper provides evidence of the effects of urban wastewater discharges on the trophic state and environmental quality of a coastal water body in a semiarid subtropical region in the Gulf of California. The concentrations of dissolved inorganic nutrients and organic matter from urban wastewater primary treatment were estimated. La Salada Cove was the receiving water body and parameters measured during an annual cycle were temperature, salinity, dissolved oxygen, nitrite, nitrate, ammonia, orthophosphate, and chlorophylla. The effects of sewage inputs were determined by using Trophic State Index (TRIX) and the Arid Zone Coastal Water Quality Index (AZCI). It was observed that urban wastewater of the city of Guaymas provided 1,237 ton Nyr−1and 811 ton Pyr−1and TRIX indicated that the receiving water body showed symptoms of eutrophication from an oligotrophic state to a mesotrophic state; AZCI also indicated that the environmental quality of the water body was poor. The effects of urban wastewater supply with insufficient treatment resulted in symptoms of eutrophication and loss of ecological functions and services of the coastal ecosystem in La Salada Cove.

scholarly journals Societal Implications of Forest and Water Body Area Evolution in Czechia and Selected Regions

2021 ◽  
Vol 13 (19) ◽  
pp. 4019
Author(s):  
Diana Carolina Huertas Bernal ◽  
Ratna Chrismiari Purwestri ◽  
Mayang Christy Perdana ◽  
Miroslav Hájek ◽  
Meryem Tahri ◽  
...  
Keyword(s):  
Water Quality ◽  
Wastewater Treatment ◽  
Land Cover ◽  
Water Body ◽  
Public Perception ◽  
Forest Cover ◽  
Wastewater Treatment Plants ◽  
Water Bodies ◽  
Societal Implications ◽  
Natural Ecosystems

Land cover evolution is an environmental factor that can be used to characterize forest ecosystem services (FES). This study aims to analyze the change in forest cover and water bodies between 1990 and 2018 in the whole Czech Republic, and in the Central Bohemian and South Moravian regions, and its effects on freshwater provision. Additionally, we attempt to understand the societal implications of water quality, public perception, and environmental investment on natural ecosystems. Forest cover and water body data were obtained from the Corine land cover database, while water quality and investment were compiled from the Czech Statistical Office. Public perceptions on the Czech FES were collected from a national survey. Between 1990 and 2018, forest cover has increased by 3.94% and water bodies by 7.65%; however, from 2014 to 2018, severe droughts were reported that compromised the availability of surface water, presumably on artificial structures, causing an increase in the occupied area. Regarding public perception, respondents with less education, and the older population, obtained an assessment of the low performance of the FES, while the water quality and investment indicate that environmental funding has contributed to improving the quality of outflow water from the wastewater treatment plants, fulfilling all the allowed limits of the urban wastewater treatment directive. Hence, a multidisciplinary approach can help decision makers promote policies that integrate environmental management measures, investment protection, and contribute to sustainable development.

Urban Water Quality: Interactions between Sewers, Treatment Plants and Receiving Waters

1993 ◽  
Vol 27 (5-6) ◽  
pp. 29-33 ◽  
Author(s):  
Lambertus Lijklema ◽  
John M. Tyson
Keyword(s):  
Water Quality ◽  
Integrated System ◽  
Urban Water ◽  
Successful Management ◽  
Urban Water Quality ◽  
Receiving Waters ◽  
Receiving Water ◽  
Interacting Components

For successful management of urban water quality it has become clear that sewers, treatment plants and receiving water must be considered, not in isolation but as (interacting) components of an integrated system.

Integrated water quality management

1996 ◽  
Vol 33 (4-5) ◽  
pp. 1-7 ◽  
Author(s):  
Vladimir Novotny
Keyword(s):  
Water Quality ◽  
Quality Management ◽  
Water Body ◽  
Habitat Restoration ◽  
Planning Process ◽  
Water Quality Management ◽  
Water Bodies ◽  
Quality Problem ◽  
Water Quality Problem ◽  
Receiving Water

Components of the integrated water quality management and planning process are described. The process is initiated by the Use Attainability Analysis (UAA) in which the ambient water quality-use based standards are justified and/or modified for the water body for which water quality management is being considered. The UAA has three components: (1) Water Body Assessment, (2) The Total Maximal Daily Load (TMDL) Process, and (3) Socio-economic Analysis. The first component identifies whether the receiving water body and watershed have a water quality problem and, subsequently, separates such water bodies into those where the water quality problem is caused by natural loads or conditions and those where man-made pollution inputs cause unacceptable water quality deterioration. The TMDL process separates water bodies into those for which water quality goals can be achieved by present and future mandated abatement of point and nonpoint sources (effluent limited water bodies) and those mandated abatement will not achieve the water quality goals (water quality limited water bodies). Extensive water quality management and expenditure of public funds is justified for the latter cases. Watersheds and receiving water bodies which are adversely affected predominantly by nonpoint (unregulated) discharges are declared as impaired and should be managed. Both reduction of waste discharges and enhancement of waste assimilative capacity-habitat restoration of the receiving water body should be considered in management of water quality limited receiving waterbodies.

scholarly journals Assessment of nutrient entry pathways and dominating hydrological processes in lowland catchments

2007 ◽  
Vol 11 ◽  
pp. 107-112 ◽  
Author(s):  
B. Schmalz ◽  
F. Tavares ◽  
N. Fohrer
Keyword(s):  
Water Quality ◽  
Water Balance ◽  
Assessment Tool ◽  
Hydrological Processes ◽  
Scale Model ◽  
Basin Scale ◽  
Catchment Areas ◽  
Using Data ◽  
Nested Approach ◽  
The Impact

Abstract. The achievement of a good water quality in all water bodies until 2015 is legally regulated since December 2000 for all European Union member states by the European Water Framework Directive (EU, 2000). The aim of this project is to detect nutrient entry pathways and to assess the dominating hydrological processes in complex mesoscale catchments. The investigated Treene catchment is located in Northern Germany as a part of a lowland area. Sandy, loamy and peat soils are characteristic for this area. Land use is dominated by agriculture and pasture. Drainage changed the natural water balance. In a nested approach we examined two catchment areas: a) Treene catchment 517 km2, b) Kielstau catchment 50 km2. The nested approach assists to improve the process understanding by using data of different scales. Therefore these catchments serve not only as an example but the results are transferable to other lowland catchment areas. In a first step the river basin scale model SWAT (Soil and Water Assessment Tool, Arnold et al., 1998) was used successfully to model the water balance. Furthermore the water quality was analysed to distinguish the impact of point and diffuse sources. The results show that the tributaries in the Kielstau catchment contribute high amounts of nutrients, mainly nitrate and ammonium. For the parameters nitrate, ammonium and phosphorus it was observed as a tendency that the annual loads were increasing along the river profile of the Kielstau.

Integrated urban water modelling with uncertainty analysis

2006 ◽  
Vol 54 (6-7) ◽  
pp. 379-386 ◽  
Author(s):  
G. Mannina ◽  
G. Freni ◽  
G. Viviani ◽  
S. Sægrov ◽  
L.S. Hafskjold
Keyword(s):  
Uncertainty Analysis ◽  
Water Body ◽  
Water Cycle ◽  
Good Description ◽  
Integrated Modelling ◽  
Urban Water ◽  
Quality Aspects ◽  
The Impact ◽  
Receiving Water ◽  
Modelling Approach

In the last twenty years, the scientific world has paid particular care towards the problems that involve the environment. Accordingly, several researches were developed to describe phenomena that take place during both wet and dry periods and to increase the knowledge in this field. In particular, attention was addressed towards the problems linked with receiving water body pollution because of the impact of rain water in the urban environment. In order to obtain a good description of the problem, it is important to analyse both quantity and quality aspects connected with all the transformation phases that characterise the urban water cycle. Today, according to this point, integrated modelling approach is spreading, aiming to find solutions to improve the quality characteristics of the receiving water body. Because several models are connected together for analysing the fate of pollutants from the sources on the urban catchment to the final recipient, classical problems connected with the selection and calibration of parameters are amplified by the complexity of the modelling approach increasing the uncertainty and reducing the reliability connected with a model's application. For this reason, a parsimonious integrated modelling approach has been developed and its uncertainty has been evaluated adopting the well known GLUE framework. For the purpose of the study, the uncertainty analysis has been applied to a “semi–hypothetic” case study obtained connecting Fossolo catchment (Bologna – Italy) to the Oreto river near Palermo (Italy).

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