Science topic

Water Quality - Science topic

Water quality is about the chemical and biological constituents of water. It comprises: 1) Water chemistry data compilations; 2) Development of reliable sampling and analytical protocols; 3) Research about water-rock, water-soil and water-atmosphere interactions; 4) Identification of water-contamination sources; 5) development of remediation strategies for poor-quality water. Water quality often means the difference in constituent concentrations between field samples and standard concentrations set by governmental authorities to protect human and ecosystem health. It is distinct from water quantity, which is broadly equivalent to physical hydrology.
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Publications related to Water Quality (10,000)
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Research Proposal
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Dear Colleagues, The main prerequisite for successful aquaculture production is maintaining the optimal quality of the breeding environment, i.e., the water in which aquaculture production is carried out. The basic parameters of water quality in aquaculture are temperature, amount of dissolved oxygen and carbon dioxide, pH value, alkalinity, amount...
Article
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Ecosystem regime shifts can alter ecosystem services, affect human well-being, and trigger policy conflicts due to economic losses and reductions in societal and environmental benefits. Intensive anthropogenic activities make the Sea of Marmara ecosystem suffer from nearly all existing available types of ecosystem pressures such as biological degra...
Article
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In recent years, iron mediated autotrophic denitrification has been a concern because it overcomes the absence of organic carbon and has been successfully used in denitrification for low C/N ratio wastewater. However, there is currently a lack of a more systematic summary of iron-based materials that can be used for denitrification, and no detailed...
Article
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Dissolved oxygen (DO) concentration is a fundamental metric to describe climate-related alterations in deep lakes. Increasing water temperatures enhance thermal stratification, leading in temperate basins to a growing isolation of deep waters. This leads to the depletion of hypolimnetic DO, which adds up to limited nutrient circulation and restrict...
Article
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Urban landscape waters (ULWs) are important components of ecological city; however, eutrophication has become increasingly serious. In Yancheng city, an eco-civilized city, the spatiotemporal characteristics of water quality indexes and the eutrophication degree were evaluated in Julong lake (JL) artificial ecological restoration and campus natural...
Article
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The artificial constructed wetland-reservoir ecosystem has become a research hotspot in the field of the pretreatment of micro-polluted water. In this study, the water purification efficiency and phytoplankton dynamics, the succession characteristics of phytoplankton functional groups and water quality responsiveness evaluation were investigated. T...
Article
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The problem of seasonal drought has intensified in recent years. Unfortunately, dry seasons can lead to poor water quality due to nitrogen (N) accumulation, which, in turn, may result in the gradual decline or even disappearance of submerged plants. This outdoor study was conducted to determine the morphological, biomass responses and C/N metabolis...
Article
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Water is important for the natural environment and human health. Monitoring algae concentrations yield information on the water quality. Compared with in situ measurements of water quality parameters, which are often complex and expensive, remote sensing techniques, using hyperspectral data analysis, are fast and cost-effective. The objectives of t...
Article
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The water quality of different natural water bodies is now monitored in many countries by the diatom population. Thus a study on the diatom population in water bodies of a city is important and a study on the seasonal variation of such species in small water bodies like ponds may help us to find out which diatom species are related to polluted wate...
Article
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Temporal Sea Surface Temperature (SST) analyses by satellite images are quite vital in terms of understanding the sea water quality. Specific water quality criteria include dissolved oxygen, chlorophyll, temperature, depth, pH, salinity, and turbidity, and these criteria are used to determine water quality in seas. In the current study, three crite...
Article
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Background Trace metals pollution in the coastal and estuarine sediment could harm water quality and aquatic organisms, leading to potential long-term health risks on the environment and humans. Thus, the purpose of this study was to conduct an assessment of selected trace metals in surface sediments of the coastal and in four rivers estuary in the...
Article
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The use of post-mining wastes in the reclamation of an open pit may act as a source of pollution that has a very strong impact on the groundwater environment. One such facility in Poland is the CTL Maczki-Bór S.A. sand mine filled with waste rock from hard coal mines. The current hydrodynamic conditions in the Quaternary aquifer causes that the was...
Article
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Estimation of estuarine flushing time, a time required to transport of pollutants or any other properties from estuaries to the coast, is very important for its resource management. In this study, we estimated flushing time (T) of the upper Pasur River Estuary (UPRE) for understanding the water quality condition in the dry and wet seasons. High-res...
Article
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Currently, lake surface water temperature (LSWT), as one of the most important indicators for evaluating lake health, is rapidly rising due to the influence of large-scale climate change and regional human activities in rapidly developing urban areas. The variety of LSWT will affect water environment problems such as lake water quality, aquatic org...
Article
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The popular water quality index (WQI) and the recently developed integrated water quality index (IWQI) were used to evaluate the potability of 32 groundwater samples collected from Nalagarh valley, Himachal Pradesh, India. But their analytical results were surprisingly contrasting. While WQI classified 14 of the samples as ‘excellent’ and 17 as ‘go...
Article
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Objective In sub-Saharan Africa, 45% of the rural population uses boreholes (BHs). Despite recent gains in improved water access and coverage, parallel use of unimproved sources persists. Periodic infrastructure disrepair contributes to non-exclusive use of BHs. Our study describes functionality of BHs in 2014, 2015, and 2016 in 15 rural towns in t...
Article
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Satellites have generated extensive data of remote sensing reflectance spectra (R rs (λ)) covering diverse water classes or types across global waters. Spectral classification of satellite R rs (λ) data allows for the distinguishing and grouping of waters with characteristic bio-optical/biogeochemical features that may influence the productivity of...
Article
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Exploitation of groundwater resources with no proper characterization of water reserves jeopardizes the quantity and quality of water available in the future. A major challenge is finding appropriate methods or coefficients to evaluate the carrying capacity of the aquifer. The objective of this study was to quantitatively and qualitatively characte...
Article
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We explore how students developed an integrated understanding of scientific ideas and how they applied their understandings in new situations. We examine the incremental development of 7th grade students’ scientific ideas across four iterations of a scientific explanation related to a freshwater system. We demonstrate that knowing how to make use o...
Article
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Drinking water quality remains a persistent challenge across regional and remote Australia. We reviewed public reporting by 177 utilities and conducted a national assessment of reported exceedances against the health-based and aesthetic guideline values of the Australian Drinking Water Guidelines (ADWG). Four definitions of a basic level of drinkin...
Article
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In this study, bone char was successfully produced by the thermal pyrolysis of cattle bones at 450 °C using a locally designed double barrel retort drum. The bone char was characterised by the point of zero charge, scanning electron microscopy/energy dispersive x-ray, Fourier-transform infrared, and Brunauer-Emmett-Teller analysis. Manganese (II) c...
Article
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Good water quality is critical to public health and aquatic ecological security of global reservoirs. In stratified reservoirs, increasing near-term management demands foster extremely high monitoring and forecasting needs. In this study, a management assistant for stratified reservoirs (MASR) was developed, including a wave-driven monitoring platf...
Article
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Aesthetic aspects of drinking water, such as Taste and Odor (T&O), have significant effects on consumer perceptions and acceptability. Solving unpleasant water T&O episodes in water supplies is challenging, since it requires expertise and know-how in diagnosis, evaluation of impacts and implementation of control measures. We present gaps, challenge...
Chapter
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Com o objetivo de fornecer uma visão sintética dos avanços das pesquisas em cenários futuros para a BAP, apresentamos neste capítulo alguns resultados recentes. Para tanto, selecionamos alguns estudos para exemplificar cenários futuros para a região, relacionados principalmente às mudanças climáticas e ao uso do solo. Assim, podemos avaliar quanto...
Article
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In recent years, the District Metered Area (DMA) of water distribution networks (WDNs) has become a major development trend in the water leakage control area. It has significant value in the active leakage control and pressure management of WDNs. This study comments on two DMA partitioning methods (Scheme A and B, previously introduced in another p...
Article
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Events of catastrophic fish mortality in the lakes of the Amazonian floodplains are not uncommon. They are generally associated with thermal inversion of the water column, which is provoked by cold air masses that originate from the south of the continent. These events occur in the period of high water when the lakes are stratified. This paper repo...
Article
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The occurrence of heavy metals (HMs) in drinking water has been a critical water quality concern for a long time and can compromise its aesthetic value to the larger extent. Chronic exposure of human beings to these toxic and non-toxic HMs through water ingestion can result in significant health risks. To assess these associated health risks, the p...
Article
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Increased salt concentration is one of the most widespread problems affecting freshwater worldwide. Aquatic communities, and in particular periphytic diatoms, react to this alteration in water quality by modifying their structural parameters and physiology at the individual level, which is commonly manifested by the appearance of teratological form...
Article
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Wetlands play a vital role in our ecosystems, preserving water quality, controlling flooding , and supplying aquifers. Wetlands are rapidly degrading due to threats by human encroachment and rising sea levels. Effective and timely mapping of wetland ecosystems is vital to their preservation. Unoccupied Aircraft Systems (UAS) have demonstrated the c...
Article
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The temporal and spatial evolution of landscape pattern is the most intuitive form of land use transition. Analyzing the change of landscape pattern and its driving factors is of great significance to land use management and water quality protection in the basin. Based on the land use data obtained from the remote sensing image interpretation of th...
Article
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This paper evaluates the financial and economic costs of reusing wastewater with reverse osmosis (R.O.) purification systems to mitigate the risks of near potable quality water shortages in an urban water system. A distributional analysis is also undertaken to identify those who bear the externalities of the system. A rich data set is available to...
Article
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All-male giant freshwater prawns (AMGFPs) have been a popular crop cultivated in the Mekong Delta, Vietnam, due to their proven production efficiency compared to all-female or mixed-sex prawn cultures. However, the crucial water quality factors impacting AMGFP aquaculture efficiency have yet to be elaborately investigated. Two separate experiments...
Article
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River Narmada is one of the 13 prominent rivers of India, which covers 98,797 sq km of total watershed area. Narmada is considered to be the lifeline of Madhya Pradesh and most important west flowing river of India. The monitoring of water quality of Narmada River was carried out for One year August 2015 to July 2016. Omkareswar station-I, Maheshwe...
Article
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With the growth of industrialization in recent years, the quality of drinking water has been a great concern due to increasing water pollution from industries and industrial farming. Many monitoring stations are constructed near drinking water sources for the purpose of fast reactions to water pollution. Due to the relatively low sampling frequenci...
Article
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One of the industries that can be done to meet the food needs of the community is aquaculture. The type of fish that is currently the most widely cultivated is tilapia (Oreochromis niloticus). Although cultivating tilapia is relatively simple, there are several things that make it difficult to achieve optimal tilapia production, one of which is fee...
Article
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Bu çalışmada Karpuz Çayı (Antalya)’nın fizikokimyasal özellikleri incelenmiş ve su kalitesi sınıfları belirlenmiştir. Aralık 2012-Eylül 2013 tarihleri arasında akarsu boyunca on istasyon seçilmiş ve su örnekleri mevsimlik olarak alınıp analiz edilmiştir. Alınan örneklerde nitrat azotu, nitrit azotu, amonyum azotu, biyokimyasal oksijen ihtiyacı, klo...
Article
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As crescentes exigências colocadas no suprimento mundial de água ameaçam a biodiversidade e o abastecimento de água para a produção de alimentos e outras necessidades humanas vitais. A agricultura consome cerca de 70% da água doce em todo o mundo. Como as populações humanas e as economias crescem, a demanda mundial de água doce tem vindo a aumentar...
Article
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A presença de íons ferro e manganês em águas de poço acabam por gerar problemas na qualidade da água que comprometem seu uso tanto doméstico quanto industrial. Para evitar isto é comum a utilização de tecnologias caras que acabam não sendo tão eficientes quanto deveriam. A partir disso, tem-se como meio alternativo a utilização de materiais naturai...
Article
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Sediment export and retention are important ecosystem processes in any landscape causing soil erosion and sediment loading in waterways consequently affecting the health of aquatic habitats downstream. The present study quantifies sediment export and retention in four watersheds, viz., Hivra, Satrapur, Konta, and Jagdalpur in the Godavari River Bas...
Article
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Computer science and technology under the background of big data are closely related to the development of modern agriculture. The application of information processing technology in aquaculture will promote the scientific development of aquaculture. The aquaculture water quality directly affects the effect of aquaculture. Therefore, on the basis o...
Article
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A series of treatments were designed to evaluate the efficacy of commercial multi-species probiotics feeding with enzymes and fermentation process on the growth parameters and culture environment of Pacific white shrimp, Litopenaeus vannamei (Boone, 1931) in an intensive culture system. Commercial multi-species probiotics and enzymes (PE) were cont...
Article
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Feed has the greatest impact on the carbon footprint of the aquaculture, and also determines the water quality in aquaculture to a great extent. Making appropriate feeding control strategies is one of the most effective ways to promote cleaner production as well as fish welfare in aquaculture. Reliable and accurate fish appetite grading especially...
Article
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The underground developments are likely to deteriorate the water quality, which causes damage to the structure. The pollutant levels largely affect the aquifer properties and alter the characteristics of the water quality. Ferritin nanoparticle usage proves to be an effective technology for reducing the pollutant level of the salts, which are likel...
Conference Paper
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Resumo: O objetivo da pesquisa foi avaliar o potencial hídrico das nascentes, do município de Garanhuns e Palmeirina, Pernambuco. Foram estudadas duas nascentes em Garanhuns e três em Palmeirina. Foram realizadas avaliações de contexto local e regional do uso e cobertura da terra, medições de vazão da água e dos parâmetros físico-químicos da água....
Article
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In this study, using vine copulas and tree sequences, dependence analysis of groundwater quality variables (Total hardness (TH), Sodium adsorption ratio (SAR), Sodium percentage (Na %) and magnesium (Mg)) was performed. For this purpose, the tree sequence of vine copulas including regular vine (R-vine), independent version of R-vine, also Gaussian...
Article
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All professional decisions prepared for a specific stakeholder can and must be explained. The primary role of explanation is to defend and reinforce the proposed decision, supporting stakeholder confidence in the validity of the decision. In this paper we present the methodology for explaining results of the evaluation of alternatives for water qua...
Article
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This study is aimed at assessing the feeding frequency for tilapia fingerlings. 240 fishes were randomly distributed in 24 containers. The feeding consisted of six frequencies: 4 (F4), 5 (F5), 6 (F6), 7 (F7), 8 (F8), and 9 (F9) times a day. The weight gain was significantly higher in F5 and F6 when compared to F4 ( p = 0.0409 and 0.0306, respective...
Article
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Divisional water quality management (DWQM) is widely adopted in watershed pollution control. During 2011–2015, China zoned 708 priority controlled areas (PCAs) and 774 non-priority controlled areas (NPCAs) for key watersheds. DWQM at watershed level provides guidance on pollution source control (PSC) at local (provincial, city, and county) level. T...
Article
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Organisms release their nucleic acid in the environment, including the DNA and RNA, which can be used to detect their presence. eDNA/eRNA techniques are being used in different sectors to identify organisms from soil, water, air, and ice. The advancement in technology led to easier detection of different organisms without impacting the environment...
Article
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Water age is the time taken for water to travel through a distribution system and reach the consumer. Generally, there is a trade-off between water pressure and water age in a water distribution system—higher pressure results in higher flow velocity, which often means shorter traveling time for the water, while lower pressure leads to slower flow a...
Article
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In this work, models for aquaculture are developed with regard to their relevance in an automated recirculation system. The three subsystems fish, water, and feed are determined as modular components. A selection of relevant variables is determined. The relationships between feed, water quality, and fish growth are described on the basis of an init...
Poster
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La expansión e intensificación de la aplicación de riego complementario en sistemas agropecuarios extensivos en la región pampeana condujo al aumento en la frecuencia de casos con evidente deterioro en propiedades físicas de los suelos afectando su capacidad de producción. En la gestión del riego se requiere de la aplicación de decisiones sustentad...
Article
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The water quality in the interim wet storage of spent fuel (ISSF) needs to be monitored due to its function as a radiation shield. Water in ISSF pools must be free from microorganisms such as microalgae that live in a radioactive environment. Moreover, particular microalgae are capable of causing corrosion to stainless steel, which is a component o...
Article
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Statistical trend analysis and time-series prediction model are widely used in water quality regulation. Using the Mann-Kendall test, trend analysis was performed on monthly time series. The monthly findings revealed that only the potential Hydrogen (pH) and Total Coliforms (TC) showed meaningful trends. Future values for the parameters which affec...
Article
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Microplastics (MPs) widely exist in the aquatic environment. In this study, the horizontal and vertical distribution of MPs in different depths of Gehu Lake was analyzed. The study found that MPs were detected in water bodies at different depths obtained. The Gehu Lake Basin's MP abundance throughout the entire lake region ranged from 1.40 to 5.53...