scholarly journals Appraisal of seasonal variation of groundwater quality near an uncontrolled municipal solid waste landfill in Kolkata, India

2017 ◽  
Vol 19 (3) ◽  
pp. 367-376 ◽  
Keyword(s):  
Seasonal Variation ◽  
Groundwater Quality ◽  
Groundwater Pollution ◽  
Landfill Site ◽  
Control Measures ◽  
Leachate Treatment ◽  
Surrounding Water ◽  
Physico Chemical ◽  
Groundwater Samples ◽  
The Impact

The present study was aimed to evaluate the impact of leachate derived from uncontrolled municipal landfill on surrounding groundwater quality in Kolkata, India. Seasonal variation of twenty physico-chemical parameters in pre-monsoon (PRM) and post-monsoon (POM) season were analysed in forty groundwater samples around the landfill site. Groundwater pollution was identified by the spatial distribution maps of TDS, Na⁺, Cl⁻, Mn and Fe along with the heavy metals like Pb, Hg andCr in both the seasons. Hydrogeochemical characteristics of groundwater samples showed that the area was dominated by brackish water, [Ca⁺2−Cl⁻], [Mg⁺2−Cl⁻] and [Na⁺−Cl⁻] type in PRM season whereas [Na⁺−HCO3⁻] type dominated in POM season. Hierarchical cluster analysis (HCA) was also applied to identify the source of groundwater pollution. In PRM season, groundwater samples closer to the active landfill site were physico-chemically different from upstream samples but more related to downstream samples. However, in POM season, groundwater samples closer to the active landfill site represented distinctly different physico-chemical characteristics from upstream and downstream samples as a result of high influx of leachate pollutants. In specific, the present study urges for proper pollution control measures along with landfill leachate treatment process to improve the surrounding water quality.

scholarly journals Schistosoma transmission in a dynamic seasonal environment and its impact on the effectiveness of disease control

2020 ◽  
Author(s):  
Qimin Huang ◽  
David Gurarie ◽  
Martial Ndeffo-Mbah ◽  
Emily Li ◽  
Charles H King
Keyword(s):  
Seasonal Variation ◽  
Intermediate Host ◽  
Control Strategies ◽  
Control Measures ◽  
Seasonal Effects ◽  
Effective Control ◽  
Optimal Timing ◽  
Snail Population ◽  
Dynamics And Control ◽  
The Impact

Abstract Background A seasonal transmission environment including seasonal variation of snail population density and human-snail contact patterns can affect the dynamics of Schistosoma infection and the success of control interventions. In projecting control outcomes, conventional modeling approaches have often ignored seasonality by using simplified intermediate-host modeling, or by restricting seasonal effects through use of yearly averaging. Methods We used mathematical analysis and numerical simulation to estimate the impact of seasonality on disease dynamics and control outcomes, and to evaluate whether seasonal averaging or intermediate-host reduction can provide reliable predictions of control outcomes. We also examined whether seasonality could be used as leverage in creation of effective control strategies. Results We found models that used seasonal averaging could grossly overestimate infection burden and underestimate control outcomes in highly seasonal environments. We showed that proper intra-seasonal timing of control measures could make marked improvement on the long-term burden reduction for Schistosoma transmission control, and we identified the optimal timing for each intervention. Seasonal snail control, implemented alone, was less effective than mass drug administration, but could provide additive impact in reaching control and elimination targets. Conclusion Seasonal variation makes Schistosoma transmission less sustainable and easier to control than predicted by earlier modeling studies.

scholarly journals Physico-Chemical Parameters and Health Risk Analysis of Groundwater Quality

2021 ◽  
Vol 11 (11) ◽  
pp. 4775
Author(s):  
Alina Soceanu ◽  
Simona Dobrinas ◽  
Corina Ionela Dumitrescu ◽  
Natalia Manea ◽  
Anca Sirbu ◽  
...  
Keyword(s):  
Environmental Policy ◽  
Health Risk ◽  
Groundwater Quality ◽  
Groundwater Pollution ◽  
Risk Index ◽  
Anthropogenic Factors ◽  
Chemical Parameters ◽  
Health Risk Index ◽  
Underground Waters ◽  
Physico Chemical

Groundwater pollution is a very common problem worldwide, as it poses a serious threat to both the environment and the economic and social development and consequently generates several types of costs. The analysis of pollution control involves a permanent comparison between pollution costs and the costs associated with various methods of pollution reduction. An environmental policy based on economic instruments is more effective than an environmental policy focused on command and control tools. In this respect, the present paper provides a case study showing how anthropogenic factors such as wastewater, industrial, agricultural, and natural factors are able to change the physical and chemical parameters of groundwater in the study area, thus endangering their quality. In order to monitor the groundwater quality in the region of Dobrudja, an analysis of physico-chemical parameters was performed. The content of heavy metals was analyzed and the health risk index was taken into account and analyzed, in order to set a better correctness of the metal content from the underground waters. Studies on groundwater quality control have shown that, in many parts of the world, water has different degrees of quality depending on the natural and anthropogenic factors acting on the pertaining environment. This is why more attention should be paid to the prevention of groundwater pollution and the immediate remediation of accidents.

scholarly journals Surveillance of Groundwater Quality Using Geographical Information System in Kannur District, India

2018 ◽  
Author(s):  
Thangavelu Arumugam ◽  
Praveen Krishna ◽  
Sapna K
Keyword(s):  
Groundwater Quality ◽  
Groundwater Resources ◽  
Geographical Information ◽  
Chemical Characteristics ◽  
Entire Study ◽  
Physico Chemical ◽  
Groundwater Samples ◽  
Gis Technique ◽  
Different Seasons ◽  
Physical And Chemical

Groundwater is an important role of the environment in natural resources. The major sources of groundwater contamination in this study were open discharges of domestic sewage, inadequate sewerage system, open defecation, septic tanks, soak pits, contaminated water pools, unorganized solid waste dumping and use of fertilizers, pesticides for agriculture deteriorated the condition. In this present study revealed that the physical and chemical characteristics of ground water in different areas of Kannur district in Kerala have been determined different seasons with respect to its suitability for drinking and agricultural purposes. For this study the groundwater samples were collected during pre-monsoon and post-monsoon seasons from 70 wells representing the entire the study area. The groundwater samples were analyzed for Physico-chemical characteristics using standard techniques in laboratory and compared with standards. The samples were analyzed with reference to the WHO and BIS standards. The groundwater quality information of the entire study area have been prepared using statistical and GIS technique for all the parameters. This paper proved in GIS will be helpful for measuring, monitoring and managing the groundwater pollution in the study area and suggested to protect groundwater resources in the environment.

scholarly journals Assessment of Major Sources Controlling Groundwater Chemistry in Kombolcha Plain, Eastern Amhara Region, Ethiopia

2021 ◽  
Vol 13 (1) ◽  
pp. 21-42
Author(s):  
Berihu Abadi Berhe ◽  
Fethangest Woldemariyam Tesema ◽  
Gebreslassie Mebrahtu
Keyword(s):  
Groundwater Quality ◽  
Strong Correlation ◽  
Dry Season ◽  
Groundwater Chemistry ◽  
Molar Ratio ◽  
Amhara Region ◽  
Wet Season ◽  
Base Exchange ◽  
Groundwater Samples ◽  
The Impact

The study area, Kombolcha town, forms an important industrial town situated in the Eastern Amhara region, Ethiopia. The geology of the area is mainly composed of basalts, rhyolitic ignimbrites, and Quaternary sediments. Hydrogeochemistry and the source of ions in the groundwater of the study area are poorly understood. Therefore, the current study aims to assess the factors and the different hydrochemical processes significantly controlling groundwater quality, source, and chemistry. For this purpose, a total of eighteen groundwater samples were collected using 250 ml sampling bottles at selected points in the dry season (May 2017) and wet season (November 2017). Gibbs diagram, correlation analysis, scatter plots of ionic molar ratio relations, saturation index values (estimated using PHREEQC Interactive 2.8) were used to decipher the hydrogeochemical process. Gibbs diagram shows that the rock-water interaction process is the predominant, Na+/Cl- and Ca2+/Mg2+ molar ratio value of all groundwater samples in both seasons reveals that the groundwater chemistry of the area is controlled by silicate minerals weathering. The strong correlation of Ca2+ with Mg2+ in the dry season, and Ca2+ with HCO3- and Na+ with HCO3- in the wet season could also be an indication of silicate weathering and ion exchange processes. The impact of anthropogenic practices on groundwater chemistry is also seen from the strong correlation of Ca2+ with Cl-, NO3-, PO43- and F-, NO2- with K+, Mg2+, and PO43- , PO43- with F- , and NO3- with Na+, Cl-, HCO3- . The negative values of chloro-alkaline indices in both seasons indicate base-exchange reaction where an indirect exchange of Ca2+ and Mg2+ of the water with Na+ and K+ of the host rock occurs. Saturation indices results for the wet season show that the groundwater is under-saturated with respect to calcite, aragonite, dolomite, gypsum, and anhydrite. In the dry season, however, some of the waters are oversaturated with respect to calcite and aragonite. To sum up, the groundwater quality of the study area is controlled by geological processes and anthropogenic effects.

Assessment of groundwater quality in the Seraidi region (north-east of Algeria) using NSF-WQI

2016 ◽  
Vol 16 (4) ◽  
pp. 1132-1137 ◽  
Author(s):  
Nawel Benouara ◽  
Abdelaziz Laraba ◽  
Lamia Hachemi Rachedi
Keyword(s):  
Water Resources ◽  
Groundwater Quality ◽  
Fecal Coliforms ◽  
Critical Element ◽  
Chemical Parameters ◽  
Political Issues ◽  
North East ◽  
The North ◽  
Physico Chemical ◽  
Groundwater Samples

Scarcity of water, pollution load, political issues and rising population have drawn great attention for proper management of water resources such as groundwater in the 21st century. The evaluation of groundwater quality is a critical element in the assessment of water resources. The quality/potability of water that is consumed defines the baseline of protection against many diseases and infections. The present study aims to calculate the water quality index (WQI) by the analysis of seven physico-chemical parameters according to the National Sanitation Foundation (NSF) to assess the suitability of water for drinking, irrigation purposes and other human uses. In the present investigation, ten groundwater samples were collected from various parts of Seraidi municipality area located in the north-east of Algeria, Physico-chemical parameters such as pH, temperature, dissolved oxygen, phosphates, nitrates, turbidity and fecal coliforms were analyzed. The overall WQI values for all the samples were found to be in the range of 68–86, which reveals the fact that the quality of all the samples is only medium to good and could be used for drinking and other domestic uses only after proper treatment.

scholarly journals Assessment of changes in the quality of ground water in the area of landfill site in Poczesna (South Poland) using the LWPI index

2021 ◽  
Vol 9 (1) ◽  
pp. 35-43
Author(s):  
Mateusz Gorzelak ◽  
Dominika Dąbrowska
Keyword(s):  
Groundwater Quality ◽  
Pollution Index ◽  
Landfill Site ◽  
Polluted Water ◽  
Chemical Components ◽  
Water Pollution Index ◽  
Municipal Landfill ◽  
Groundwater Samples ◽  
Polycyclic Aromatic

Abstract Municipal waste landfill is a potential, or actual, source of groundwater pollution. Even landfill with a ground containment system can generate leachate that will migrate to aquifers. In this context, it is important to monitor water and leachate and to rationally analyze the existing situation. The purpose of this article was to assess groundwater contamination in the region of the municipal landfill site in Poczesna (Southern Poland) using the Landfill Water Pollution Index (LWPI). Certain physicochemical parameters such as pH, electrical conductivity (EC), total organic carbon (TOC), polycyclic aromatic hydrocarbon (PAH), Cd, Pb, Zn, Cu, Cr, and Hg, were analyzed from samples from six piezometers in the years 2015-2019. The LWPI index values in the groundwater samples ranged from 0.97 to 3.11 (P<0.05). Indicator values that are within the range 2-5 reflect poor water quality with a high visible landfill impact, and those >5 suggest strongly polluted water with a very high landfill impact. The results of this study indicated that the quality of the groundwater in the area around the landfill was better in the case of the Jurassic aquifer compared to the Quaternary aquifer. The results provided by this index are very useful in the context of a quick assessment of groundwater quality. For the purposes of further risk analyses, it is important to consider other variables (chemical components) which can influence groundwater quality in the region of municipal landfill sites.

scholarly journals Assessment of groundwater quality in Bhavani region

2020 ◽  
Author(s):  
PERUMAL KARTHIKEYAN ◽  
Jabar Abdul Bari ◽  
Vennila G
Keyword(s):  
Spatial Distribution ◽  
Groundwater Quality ◽  
Quality Parameters ◽  
Weighted Interpolation ◽  
Distance Method ◽  
Study Region ◽  
Physico Chemical ◽  
Groundwater Samples ◽  
Inverse Distance ◽  
Spatial Distribution Map

This work deals with the spatial distribution of groundwater quality parameters and their interrelationship in Bhavani Taluk, Erode District, Tami Nadu, India. The present study deals with the suitability of groundwater quality for drinking purpose in Bhavani Taluk, Erode District, India and to determine the spatial distribution groundwater quality parameters by using ArcGIS. The groundwater samples of 53 wells from the study region are collected and are tested in the laboratory to determine the physico-chemical parameters and the obtained results determined the suitability of groundwater for drinking purposes by comparing with WHO standards. From the result, groundwater quality zones were identified as Good (423.10 sq.km), Moderate (155.70 sq.km) and Poor zones (63.18 sq.km) by inverse distance method weighted interpolation techniques from the spatial distribution map using ArcGIS. The study indicates that about half of the groundwater is not suitable for drinking due to by the excessive usage of fertilizers and necessary treatment has to be undertaken before drinking water supply.

scholarly journals Groundwater quality assessment of protected aquatic eco-systems in cross-border areas of Serbia and Croatia

2021 ◽  
pp. 107-107
Author(s):  
Boris Obrovski ◽  
Ivana Mihajlovic ◽  
Mirjana Vojinovic-Miloradov ◽  
Maja Sremacki ◽  
Ivan Spanik ◽  
...  
Keyword(s):  
Groundwater Quality ◽  
Protected Area ◽  
Statistical Data ◽  
Monitoring Program ◽  
Agricultural Activities ◽  
Chemical Parameters ◽  
Cross Border ◽  
Physico Chemical ◽  
Seasonal Monitoring ◽  
The Impact

Research results define basis for specific monitoring programs of gro-undwater quality in wetland eco-systems in Serbia and Croatia. The main pur-pose of the research was to determine the impact of nonpoint diffuse source pollution on the groundwater quality, as well as seasonal variations on the con-centration levels of selected physico-chemical parameters. Statistical analyses, PCA, HCA, ANOVA and t-test, encompass 18 monitored parameters in ground-water. Statistical data indicated that protected area in Serbia has a significantly higher load of pollution from agricultural activities compared to Wetlands Tompojevci. The highest load in groundwater was detected from total nitrogen, ammonia and nitrogen anions, indicating contamination of groundwater by nitrogen-based fertilizers. The results obtained within the two-year seasonal monitoring program, from 2018 to 2020, are highly essential for achieving a comprehensive database that could be used as platform for high-quality groundwater management in selected protected areas with the aim of minimizing environmental pollution.

scholarly journals Impact of Solid Waste Dumpsite on Groundwater Quality in the Neighbouring Communities

2019 ◽  
pp. 1-12
Author(s):  
O. V. Ajibade ◽  
P. O. Ogungbile ◽  
M. K. C. Sridhar ◽  
A. O. Coker
Keyword(s):  
Drinking Water ◽  
Solid Waste ◽  
World Health ◽  
Chemical Parameters ◽  
Drinking Water Contamination ◽  
Groundwater Aquifer ◽  
Physico Chemical ◽  
Groundwater Samples ◽  
Local Ecosystem ◽  
The Impact

Leachate seepages into groundwater aquifer from solid waste dumpsites is likely to release toxic pollutants in groundwater which are hazardous to human health and local ecosystem. A study was conducted on the Physico-chemical parameters of dumpsite leachate and surrounding groundwater from Awotan Solid Waste Dumpsite, in Ibadan, Oyo State. The study was aimed at assessing the impact of the leachate from the dumpsite. The physicochemical analyses of the water samples were carried by standard analytical methods. The results obtained were compared with the WHO (World Health Organization) permissible limit of those parameters in drinking water. The Physico-chemical values obtained for the dumpsite leachate were generally higher than those of groundwater samples, suggesting that a source of contamination could be from the dumpsite leachate. The pH of groundwater samples ranged between 5.03 to 6.94, indicating that the groundwater was acidic. Results of Physico-chemical parameters of dumpsite leachate for Cl-, NO3, TH, Alk, BOD, COD exceeded the WHO limits for drinking water. The BOD and COD of dumpsite leachate and groundwater samples exceeded the WHO limits and hence not safe for drinking. The concentration of Cl- and TH in the groundwater closer to the dumpsite were higher than WHO permissible limits for drinking water. Also, concentrations of the analyzed parameters decreased with increasing distance from the dumpsite, thus implicating leachate seepage from the dumpsite into the groundwater. It is therefore recommended that dumpsites be located away from the human settlements to avoid drinking water contamination and local ecosystem & biodiversity degradation.

Sign in / Sign up

Export Citation Format

Share Document