scholarly journals An Assessment of the Effect of Industrial and Sewage Effluent on Aquatic Invertebrates: A Case Study of A Southern Urban Stream, Zimbabwe

2010 ◽  
Vol 3 (2) ◽  
Author(s):  
Trevor Dube ◽  
Caston Makaka ◽  
Zwelabo Sibanda
Keyword(s):  
Aquatic Invertebrates ◽  
Urban Stream ◽  
Sewage Effluent

scholarly journals How effective is river restoration in re-establishing groundwater–surface water interactions? – A case study

2015 ◽  
Vol 19 (6) ◽  
pp. 2663-2672 ◽  
Author(s):  
A.-M. Kurth ◽  
C. Weber ◽  
M. Schirmer
Keyword(s):  
Surface Water ◽  
River Restoration ◽  
Morphological Changes ◽  
Cost Effective ◽  
Urban Stream ◽  
Distributed Temperature Sensing ◽  
River Bed ◽  
Before And After ◽  
Restoration Measures

Abstract. In this study, we investigated whether river restoration was successful in re-establishing groundwater–surface water interactions in a degraded urban stream. Restoration measures included morphological changes to the river bed, such as the installation of gravel islands and spur dykes, as well as the planting of site-specific riparian vegetation. Standard distributed temperature sensing (DTS) and novel active and passive DTS approaches were employed to study groundwater–surface water interactions in two reference streams and an experimental reach of an urban stream before and after its restoration. Radon-222 analyses were utilized to validate the losing stream conditions of the urban stream in the experimental reach. Our results indicated that river restoration at the study site was indeed successful in increasing groundwater–surface water interactions. Increased surface water downwelling occurred locally at the tip of a gravel island created during river restoration. Hence, the installation of in-stream structures increased the vertical connectivity and thus groundwater–surface water interactions. With the methods presented in this publication, it would be possible to routinely investigate the success of river restorations in re-establishing vertical connectivity, thereby gaining insight into the effectiveness of specific restoration measures. This, in turn, would enable the optimization of future river restoration projects, rendering them more cost-effective and successful.

PROFILE: Urban Stream Rehabilitation: A Design and Construction Case Study

1999 ◽  
Vol 23 (2) ◽  
pp. 165-177 ◽  
Author(s):  
SCOTT MORRIS ◽  
TODD MOSES
Keyword(s):  
Urban Stream ◽  
Design And Construction

scholarly journals Monitoring of micro-plastics: a case study of shilaoren beach, Qingdao, China

2019 ◽  
Vol 10 (1) ◽  
pp. 4869-4875
Keyword(s):  
Chemical Composition ◽  
Microscopy Study ◽  
Future Research ◽  
Sewage Effluent ◽  
Spectroscopy Analysis ◽  
Density Separation ◽  
Analysis Technique ◽  
The World ◽  
Beach Sediments

Healthy beaches in our ecosystem provide numerous services, including recreational entertainment, cultural heritage, and nutrient cycling. Microplastics (MPs) contaminations (in and around the beaches) have been well documented in many beaches around the world. Hence, the present study was designed to determine the occurrences, chemical composition, and accumulation of MPs along the Shilaoren beach of Qingdao, China. The extraction of MPs particles was done using the density separation method. The present study has confirmed the MPs existence in the beach sediments. A total of 561 MPs particles found in all collected sand samples. The average number of MPs particles was about 56 particles in 1 kg of dry sand (d.w). The MPs particle had a size less than <0.5 mm comprised of 351 MPs particles followed by 250 MPs particles with 0.5 mm size. The FTIR spectroscopy analysis technique confirmed the chemical composition of MPs including polystyrene (PS) and polyvinyl chloride (PVC). Besides, the microscopy study revealed that MPs particles were needle-like shape morphology/structure, and fewer were fragmented. The source of MPs found as a result of industrialization, urbanization, sewage effluent/ wastewater, tourism, and development. The present study is the baseline for future research.

The spatial and temporal distribution of metals in an urban stream: A case study of the Don River in Toronto, Canada

2018 ◽  
Vol 44 (6) ◽  
pp. 1314-1326 ◽  
Author(s):  
Sannan Zahid Mansoor ◽  
Sana Louie ◽  
Ana T. Lima ◽  
Philippe Van Cappellen ◽  
Bruce MacVicar
Keyword(s):  
Temporal Distribution ◽  
Urban Stream ◽  
Spatial And Temporal Distribution ◽  
Don River

Post-irrigation impact of domestic sewage effluent on composition of soils, crops and ground water—A case study

2002 ◽  
Vol 28 (6) ◽  
pp. 481-486 ◽  
Author(s):  
R.K Yadav ◽  
B Goyal ◽  
R.K Sharma ◽  
S.K Dubey ◽  
P.S Minhas
Keyword(s):  
Ground Water ◽  
Domestic Sewage ◽  
Sewage Effluent

scholarly journals How effective is river restoration in re-establishing groundwater – surface water interactions? – A case study

2015 ◽  
Vol 12 (1) ◽  
pp. 1093-1118
Author(s):  
A.-M. Kurth ◽  
C. Weber ◽  
M. Schirmer
Keyword(s):  
Surface Water ◽  
River Restoration ◽  
Cost Effective ◽  
Urban Stream ◽  
Distributed Temperature Sensing ◽  
Before And After ◽  
Restoration Measures ◽  
Insight Into ◽  
Gaining Insight

Abstract. In this study we investigated whether river restoration was successful in re-establishing vertical connectivity and, thereby, groundwater-surface water interactions, in a degraded urban stream. Well-tried passive Distributed Temperature Sensing (DTS) and novel active and passive DTS approaches were employed to study groundwater-surface water interactions in an experimental reach of an urban stream before and after its restoration and in two (near-) natural reference streams. Results were validated with Radon-222 analyses. Our results indicated that river restoration at the study site was indeed successful in increasing groundwater-surface water interactions. Increased surface water downwelling occurred locally at the tip of a gravel island created during river restoration. Hence, the installation of in-stream structures increased the vertical connectivity and thus groundwater-surface water interactions. With the methods presented in this publication it would be possible to routinely investigate the success of river restorations in re-establishing vertical connectivity, thereby gaining insight into the effectiveness of specific restoration measures. This, in turn, would enable the optimization of future river restoration projects, rendering them more cost-effective and successful.

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