scholarly journals IMPACT OF MUNICIPAL LANDFILL SITE ON WATER QUALITY IN THE WŁOSANKA STREAM

2016 ◽  
Vol 17 (4) ◽  
pp. 57-64 ◽  
Author(s):  
Włodzimierz Kanownik ◽  
Agnieszka Policht-Latawiec
Molecules ◽  
2020 ◽  
Vol 25 (23) ◽  
pp. 5599
Author(s):  
Rinae Makhadi ◽  
Saheed A. Oke ◽  
Olusola O. Ololade

This study assessed the groundwater quality around two municipal solid waste landfill sites, in the city of Bloemfontein, Free State Province, South Africa. The two landfill sites are located in two contrasting geological terrains, with both lacking some basic facilities found in a well-designed landfill. A total of eight groundwater samples were collected from pollution monitoring boreholes near the two landfill sites, with five samples representing the northern landfill site and three samples representing the southern landfill site. The samples were collected in the autumn and winter seasons to assess any possible seasonal variations. They were analysed for physicochemical (pH, electrical conductivity (EC), total dissolve solids (TDS), chemical oxygen demand (COD) and total organic carbon (TOC)) and microbiological parameters (Escherichia coli, total coliform). The results of the analysis showed that the waters from both landfills were generally dominated by Ca, Mg, SO4, and HCO3 ions. Some of the major anions and cations in the water samples were above the South African National Standard (SANS241:2015) and World Health Organisation (WHO) permissible limits for drinking water. Majority of the boreholes had total dissolved solids and electrical conductivity values exceeding the SANS 241:2015 and WHO permissible limits. Piper trilinear plots for the two landfill sites showed that Ca(Mg)HCO3 water type predominates, but Ca(Mg)SO4 and Ca(Mg)Cl were also found. These water types were further confirmed with expanded Durov diagrams, indicating that that the boreholes represented a water type that is seldom found which is undergoing ion exchange, typical of sulphate contamination. From the SAR diagrams, boreholes in the northern landfill site had a high salinity hazard with only one borehole in the southern landfill site having a high salinity hazard. The geology was found to play a significant role in the distribution of contaminants into the groundwater systems in the study area. The study concluded that the northern landfill site had a poorer water quality in comparison to the southern landfill site based on the analysed physicochemical parameters. However, the southern landfill site showed significant microbial contamination, due to the elevated amount of E. coli and total coliform concentrations. The high permeability of the weathered dolerites in the northern landfill site might have enabled the percolation of contaminants into the groundwater resulting in the poorer water quality.


2014 ◽  
Vol 21 (2) ◽  
pp. 229-243 ◽  
Author(s):  
Krzysztof Frączek ◽  
Henryk Różycki ◽  
Dariusz Ropek

Abstract Air microbial quality of the municipal landfill site and in its surroundings was evaluated. Adverse impact of the municipal landfill site in Tarnow on the atmospheric environment was noted, despite the use of correct waste disposal technology. The sampling site and season of the year significantly affected the numbers of various groups of air microorganisms at the municipal landfill site and in its vicinity. For most cases, the effects of the sampling site on the microbial numbers were stronger than that of the season of the year. In this study, higher microbial numbers were observed at the sampling sites located in the area of the active landfill site compared to those located in its vicinity. The obtained results indicate, that despite the lack of current limits for bioaerosol levels the landfill site, even after its closing and reclamation, may still not be a suitable place for any public usage. Therefore, any regular microbiological studies of air should be carried out for a long time both at the area of landfill site and in its vicinity. These results could allow to define the time, when the landfill site become stable, regarding the numbers of microorganisms released to air.


2004 ◽  
Vol 30 ◽  
Author(s):  
Dinesh C. Devkota ◽  
Kunio Watanabe ◽  
Vishnu Dangol

The Gokarna landfill site (GLS) was in operation between 1986 and 1996. At present, there is a high risk of shallow aquifer contamination owing to the absence of a barrier layer and a high rate of leachate in now from the landfill site. About 20 m thick sandy bed is transmitting pollutants to the shallow aquifer. The water quality analysis of shallow wells, dug wells and springs around the GLS carried out between November 2003 and March 2004 revealed that they are polluted by the leachate. The heavy metal concentration, chlorides, iron as well as BOD and COD values depicted their increasing trend. Likewise, the microbial contamination was also high, and the water was unsuitable for domestic use. However, there is a low probability of contaminating the deep aquifer owing to the presence of impermeable layers of silt and clay above it. On the other hand, the amount of pollutants in the leachate has decreased significantly in recent years, especially after 1996.


Sign in / Sign up

Export Citation Format

Share Document