Strategies for Dealing with the Effects of Increasing Urbanisation on Surface Water Quality

1992 ◽  
Vol 26 (9-11) ◽  
pp. 2599-2603
Author(s):  
L. H. Lötter
Keyword(s):  
Surface Water ◽  
Wastewater Treatment Plants ◽  
Surface Water Quality ◽  
High Quality ◽  
Surface Water Pollution ◽  
Diffuse Sources ◽  
Mine Dumps ◽  
Sewage Purification ◽  
Point And Diffuse Sources

Extensive research into sewage purification processes has enabled Johannesburg to produce environmentally high quality effluent from wastewater treatment plants, thus successfully controlling the largest point source contribution to surface water pollution in the Johannesburg metropolitan area. However, a variety of other point and diffuse sources require attention in order to protect the country's single most important resource. Case studies involving pollution from sanitary sewers, zoological gardens, informal settlements and mine dumps are discussed. The effect of more stringent effluent control on the quality of rivers receiving sewage effluent is also discussed.

scholarly journals Surface water quality in the Mastnik stream catchment area: The situation in the Czech countryside

Geografie ◽  
2018 ◽  
Vol 123 (4) ◽  
pp. 479-505
Author(s):  
Luboš Mrkva ◽  
Bohumír Janský
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Wastewater Treatment Plants ◽  
Stream Water ◽  
Surface Water Quality ◽  
Gradual Improvement ◽  
Stream Flows ◽  
Using Data ◽  
The Impact

Despite major investments into the remediation of wastewater, and the reduction of fertilizers, the quality of small river surface water in agricultural and rural regions of Czechia is still very low. The Mastník stream flows through an agricultural area before combining with the Vltava river; a portion of the Mastník stream water inevitably terminates in the Slapy Reservoir. The quality of the water has been analyzed using data from indicator concentrations from both the Vltava River Basin Authority study profiles, and the author’s monitoring profile. The data show that the steps that have been taken – primarily the construction of wastewater treatment plants – have led to a gradual improvement in the surface water quality by some parameters. Presently, a growing concentration of chlorophyll–α and a lack of dissolved oxygen are influencing the final quality of the water. In the case of the Mastník stream, it is particularly necessary to improve the remediation of wastewater from small households, and to reduce the impact of water erosion on agricultural soil.

Influence of atmospheric deposition on surface water quality and DBP formation potential as well as control technology of rainwater DBPs: a review

2021 ◽  
Author(s):  
Minghao Shi ◽  
Bing Geng ◽  
tiantao Zhao ◽  
Feifei Wang
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Surface Water ◽  
Atmospheric Deposition ◽  
Wet Deposition ◽  
Surface Water Quality ◽  
Control Technology ◽  
High Quality ◽  
Surface Water Pollution ◽  
Water Eutrophication

Atmospheric substances can enter surface water through dry and wet deposition, which contributes to surface water pollution and is one indispensable cause of water eutrophication. Rainwater is a high-quality alternative...

scholarly journals Performance Assessment of Domestic Wastewater Treatment Plants Operating on Different Technologies

2020 ◽  
Vol 9 (3) ◽  
pp. 1649-1653
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Sewage Treatment ◽  
Drainage System ◽  
Surface Water Quality ◽  
Domestic Wastewater ◽  
Effluent Quality

Delhi, the most populated city in the country, is the capital of India. The huge population, urbanization and industrial processes contribute to degradation of water quality which is further aggravated by direct disposal of untreated domestic wastewater into the river Yamuna. In Delhi, the sewerage system is badly affected by improper management of the drainage system and insufficient installation of sewers in undeveloped as well as slum areas of the city which degrade the surface water quality of Yamuna River and create unhygienic conditions for the increasing population. In this study, three sewage treatment plants (STPs) have been selected which are situated at Najafgarh, Delhi Gate and Shahdara based on different technologies like Extended Aeration (EA), Biological Filtration and Oxygenated Reactor (BIOFOR) and Phytorid in order to assess the quality of wastewater before and after treatment and determining the removal efficiencies of various parameters. The study reveals that the performance of Delhi Gate and Shahdara STPs based on BIOFOR and Phytorid technologies are more efficient for the treatment of the municipal wastewater which can be further be safely disposed off into surface water and can be used for non-domestic purposes like irrigation, agriculture, cleaning of parks and streets. The effluent quality of Najafgarh STP based on EA technology is found to be less efficient as compared to the BIOFOR and Phytorid technologies. Hence, it is required to be operated and maintained properly with close supervision so as to achieve effluent quality standards as prescribed by the Indian standards

scholarly journals Dynamics of changes in surface water quality indicators of the Western Bug River basin within Ukraine using GIS technologies

2019 ◽  
Vol 42 (1) ◽  
pp. 67-75 ◽  
Author(s):  
Igor Gopchak ◽  
Tetiana Basiuk ◽  
Ihor Bialyk ◽  
Oleg Pinchuk ◽  
Ievgenii Gerasimov
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Environmental Assessment ◽  
Land Surface ◽  
Surface Water Quality ◽  
Ecological Condition ◽  
Toxic Substances ◽  
Ecological Index ◽  
Gis Technologies

Abstract The environmental assessment of the surface water quality of the Western Bug River has been made using the system of classification quality of land surface water of Ukraine in accordance with the approved methodology, which allows comparing water quality of separate areas of water objects of different regions. The calculation of the environmental assessment of water quality has been carried according to three blocks: block of salt composition, block of trophic and saprobic (ecological and sanitary) indicators and block of indicators of content of specific toxic substances. The results are presented in the form of a combined environmental assessment, based on the final conclusions of the three blocks and consists in calculating the integral ecological index. Comprehensive studies of changes in the water quality of the Western Bug River have been conducted within the territory of Ukraine for a long-term period. The water quality of the river on the final values of the integral indicators of the ecological condition corresponded mainly to 4nd category of the 3rd class – the water is “satisfactory” by condition and “little polluted” by degree of purity (except for points of observation that located within the Volyn region, where the water quality corresponded to 3rd category and the 2nd class. It is “good” by condition and “fairly clean” by the degree of purity). Visualization and part of the analysis are performed using GIS technologies in the software of the ArcGIS 10.3.

scholarly journals INFLUENCE OF WASTE DUMP “CHROBRÓW” IN POLAND ON GROUND - AND SURFACE WATER

2005 ◽  
Vol 1 ◽  
pp. 179
Author(s):  
Agnieszka Gontaszewska ◽  
Andrezej Krainski
Keyword(s):  
Surface Water ◽  
Negative Impact ◽  
Surface Water Quality ◽  
Ammonia Nitrogen ◽  
Geological Structure ◽  
Sewage Water ◽  
Waste Dump ◽  
The Moment ◽  
Sodium And Potassium

In paper an influence of waste dump “Chrobrów” on groundwater and tributary of the Bóbr river was described. This waste dump was installed in former gravel excavation. For first 10 years it had no leak stopper and sewage water could freely infiltrate. Geological structure of the waste dump subsoil is unfavourable because garbage are directly stored on gravels with high filtration coefficient which make migration of pollutants easy. At the moment the waste dump has a leak stopper made from bentonite composite but there are still polluted groundsunderneath. In this paper was analyzed data about ground- and surface water quality from years 1994 – 2004. It was found that the quality of groundwater deteriorated, especially in years 1999 and 2002. The most worsening was noted in case of chlorides, ammonia nitrogen, sodium and potassium. Unfortunately there is no data before 1994 so there is no information about hydrogeochemical background. Increased values of all groundwater components infirst period of investigation are results of exploitation in years 1984 – 1994, when waste dump had no leak stopper.But later deterioration of groundwater quality can not be explained in this way. It should be drawn a conclusion that the seal of waste dump bottom does not work correctly. It was found that there is no negative impact of waste dump on surface water what is caused by absence of hydraulic contact between river and groundwater on investigated area.

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