Spatio-temporal study of water quality in a subtropical reservoir and related water bodies in Southern Brazil

Выполнен анализ действующей редакции Методики разработки нормативов допустимых сбросов веществ и микроорганизмов в водные объекты для водопользователей , утвержденной приказом Минприроды России от 17 декабря 2007 г. 333, на предмет непротиворечивости и соответствия нормам водоохранного законодательства. Выявлена неопределенность применения Методики в условиях воздействия на качество воды природных и антропогенных факторов, не зависящих от конкретного водопользователя. Положения Методики противоречат принципам нормирования воздействия на водные объекты на основе наилучших доступных технологий, что было показано на примерах утвержденных технологических показателей содержания загрязняющих веществ в сточных водах различных отраслей промышленности. Анализ системы нормирования допустимых воздействий на водные объекты и географической дифференциации нормативов качества воды в пределах Российской Федерации вместе с системой целевых показателей качества воды также показал несоответствие Методики основным принципам водоохранного законодательства.The analysis of the current edition of the Methods of developing standards for permissible discharges of substances and microorganisms into water bodies for water users , approved by the Order of the Ministry of Natural Resources of Russia dated December 17, 2007 No. 333 for consilience and compliance with the regulations of the water protection legislation, is carried out. Uncertainty of the application of the Methods in the conditions of the impact of natural and anthropogenic factors that are independent of a specific water user on the quality of water has been identified. The provisions of the Methods contradict the principles of regulating the impact on water bodies based on the best available technologies shown on the examples of approved process indicators of the concentrations of various industrial pollutants in wastewater. An analysis of the system of regulating the permissible impact on water bodies and the geographical differentiation of water quality standards within the boundaries of the Russian Federation, together with the system of water quality targets, also showed that the Methods do not comply with the basic principles of the water protection legislation.

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Management and Status of Japanese Public Waters

Water Science & Technology ◽

10.2166/wst.1991.0395 ◽

1991 ◽

Vol 23 (1-3) ◽

pp. 1-10 ◽

Cited By ~ 3

Author(s):

Takeshi Goda

Keyword(s):

Water Quality ◽

Coastal Waters ◽

Industrial Wastewater ◽

Quality Standards ◽

Water Bodies ◽

Industrial Wastewaters ◽

Quality Of Water ◽

Japanese Rivers ◽

Per Capita

The management and status of public water bodies in Japan is discussed. The environmental quality standards which have been set and the levels of compliance with these standards are shown. The water quality of Japanese rivers, lakes, reservoirs, wetlands and coastal waters is described, and eutrophication problems are mentioned. The effects of changes in population density and levels of recycling of industrial wastewaters on the quality of water bodies are discussed. Almost 75% of industrial wastewater is now recycled. Per capita availability of freshwater in Japan is comparatively low, and the construction of 530 dams, in addition to the 2393 dams already in operation, is planned. Irrigation effluents from paddy fields are a major factor which influences river water quality in Japan. The improvement of water quality using various methods is discussed.

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

Water Science & Technology ◽

10.2166/wst.1989.0178 ◽

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.

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Spatio-Temporal Analysis of Water Quality Parameters in Machángara River with Nonuniform Interpolation Methods

Water ◽

10.3390/w8110507 ◽

2016 ◽

Vol 8 (11) ◽

pp. 507 ◽

Cited By ~ 3

Author(s):

Iván Vizcaíno ◽

Enrique Carrera ◽

Margarita Sanromán-Junquera ◽

Sergio Muñoz-Romero ◽

José Luis Rojo-Álvarez ◽

...

Keyword(s):

Water Quality ◽

Temporal Analysis ◽

Quality Parameters ◽

Water Quality Parameters ◽

Interpolation Methods ◽

Spatio Temporal

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Spatio-temporal trends in the flow and water quality: response of river Yamuna to urbanization

Environmental Monitoring and Assessment ◽

10.1007/s10661-021-08873-x ◽

2021 ◽

Vol 193 (3) ◽

Author(s):

Shweta Lokhande ◽

Vinod Tare

Keyword(s):

Water Quality ◽

Temporal Trends ◽

Spatio Temporal ◽

River Yamuna ◽

Quality Response

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The RiBaTox web tool: selecting methods to assess and manage the diverse problem of chemical pollution in surface waters

Environmental Sciences Europe ◽

10.1186/s12302-019-0244-7 ◽

2019 ◽

Vol 31 (1) ◽

Cited By ~ 5

Author(s):

Kees J. M. Kramer ◽

Frank Sleeuwaert ◽

Guy Engelen ◽

Christin Müller ◽

Werner Brack ◽

...

Keyword(s):

Water Quality ◽

Surface Waters ◽

Complex Problem ◽

End Users ◽

Water Bodies ◽

Chemical Pollution ◽

The Novel ◽

Web Tool ◽

Novel Approaches ◽

Local Water

Abstract Chemical pollution of water bodies is a complex problem around the globe. When described by the extremes of the range of problem definitions, water bodies can be chemically polluted by a single compound that is emitted from a point source or an incidental spill, or by chronic diffuse emissions from local and upstream land uses. The resulting mixture exposures can vary in space and time, e.g. due to the use of pesticides in the crop growing season. The environmental management objectives are commonly to protect and restore surface waters against human influences. Currently, chemical pollution is globally judged for a selected set of compounds, by judging each of these individually in comparison with protective environmental quality standards. Research has provided a novel assessment paradigm (solution-focused risk assessment) and novel data, measurement methods and models to improve on current practices. Their adoption and application require establishing novel linkages between the diverse problem definitions and the novel approaches. That would assist water quality professionals to select the most effective option or options to protect and restore water quality. The present paper introduces the RiBaTox (River Basin Specific Toxicants assessment and management) web tool. It consists of short descriptions of the novel approaches (made available as Additional file 1) and a decision tree for end-users to select those. The overview of novel approaches collated in RiBaTox is relevant for end-users ranging from local water quality experts up till strategic policy developers. Although RiBaTox was developed in the context of European water quality problems, the methods provided by RiBaTox are relevant for users from (inter)national to local scales. This paper is part of a series of Policy Briefs from the EU-FP7 project SOLUTIONS (http://www.solutions-project.eu), which provide backgrounds on chemical pollution of surface waters and policy practices and proposed improvements.

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Short-Time Recurrences of Plasmodium vivax Malaria as a Public Health Proxy for Chloroquine-Resistance Surveillance: A Spatio-Temporal Study in the Brazilian Amazon

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18105061 ◽

2021 ◽

Vol 18 (10) ◽

pp. 5061

Author(s):

Antonio A. S. Balieiro ◽

Andre M. Siqueira ◽

Gisely C. Melo ◽

Wuelton M. Monteiro ◽

Vanderson S. Sampaio ◽

...

Keyword(s):

Plasmodium Vivax ◽

Multilevel Models ◽

Malaria Incidence ◽

Chloroquine Resistance ◽

Spatial Clusters ◽

Temporal Study ◽

Plasmodium Vivax Malaria ◽

Spatio Temporal ◽

Spatially Varying ◽

Short Time

In Brazil, malaria caused by Plasmodium vivax presents control challenges due to several reasons, among them the increasing possibility of failure of P. vivax treatment due to chloroquine-resistance (CQR). Despite limited reports of CQR, more extensive studies on the actual magnitude of resistance are still needed. Short-time recurrences of malaria cases were analyzed in different transmission scenarios over three years (2005, 2010, and 2015), selected according to malaria incidence. Multilevel models (binomial) were used to evaluate association of short-time recurrences with variables such as age. The zero-inflated Poisson scan model (scanZIP) was used to detect spatial clusters of recurrences up to 28 days. Recurrences compose less than 5% of overall infection, being more frequent in the age group under four years. Recurrences slightly increased incidence. No fixed clusters were detected throughout the period, although there are clustering sites, spatially varying over the years. This is the most extensive analysis of short-time recurrences worldwide which addresses the occurrence of P. vivax CQR. As an important step forward in malaria elimination, policymakers should focus their efforts on young children, with an eventual shift in the first line of malaria treatment to P. vivax.

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Spatio‐temporal dynamics of water quality and eutrophication in Lake Taihu, China

Ecohydrology ◽

10.1002/eco.2291 ◽

2021 ◽

Author(s):

Qiongfang Li ◽

Yuting Zhu ◽

Qihui Chen ◽

Yu Li ◽

Jing Chen ◽

...

Keyword(s):

Water Quality ◽

Temporal Dynamics ◽

Lake Taihu ◽

Spatio Temporal

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In vitro bioanalytical assessment of toxicity of wetland samples from Spanish Mediterranean coastline

Environmental Sciences Europe ◽

10.1186/s12302-021-00510-1 ◽

2021 ◽

Vol 33 (1) ◽

Author(s):

Alberto Celma ◽

Geeta Mandava ◽

Agneta Oskarsson ◽

Juan Vicente Sancho ◽

Lubertus Bijlsma ◽

...

Keyword(s):

Water Quality ◽

Reporter Gene ◽

Biological Activities ◽

Reporter Gene Assay ◽

Water Bodies ◽

Good Tool ◽

Adverse Health Effects ◽

Aryl Hydrocarbon ◽

Gene Assay

Abstract Background Fresh water bodies represent less than 1% of overall amount of water on earth and ensuring their quality and sustainability is pivotal. Although several campaigns have been performed to monitor the occurrence of micropollutants by means of chemical analysis, this might not cover the whole set of chemicals present in the sample nor the potential toxic effects of mixtures of natural and anthropogenic chemicals. In this sense, by selecting relevant toxicity endpoints when performing in vitro bioanalysis, effect-based methodologies can be of help to perform a comprehensive assessment of water quality and reveal biological activities relevant to adverse health effects. However, no prior bioanalytical study was performed in wetland water samples from the Spanish Mediterranean coastline. Methods Eleven samples from relevant water bodies from the Spanish Mediterranean coastline were collected to monitor water quality on 8 toxicity endpoints. Aryl hydrocarbon receptor (AhR), androgenicity (AR+ and AR−), estrogenicity (ER+ and ER−), oxidative stress response (Nrf2) and vitamin D receptor (VDR+ and VDR−) reporter gene assays were evaluated. Results AhR was the reporter gene assay showing a more frequent response over the set of samples (activated by 9 out of 11 samples), with TCDD-eq in the range 7.7–22.2 pM. For AR, ER and VDR assays sporadic activations were observed. Moreover, no activity was observed on the Nrf2 reporter gene assay. Wastewater and street runaway streams from Valencia could be responsible for enhanced activities in one of the water inputs in the Natural Park ‘L’Albufera’. Conclusions Water quality of relevant wetlands from the Spanish Mediterranean coastline has been evaluated. The utilization of a panel of 5 different bioassays to cover for different toxicity endpoints has demonstrated to be a good tool to assess water quality.

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