Case Study of a Marine Discharge: Comparison of Effluent and Receiving Water Toxicity

2009 ◽  
pp. 159-159-15 ◽  
Author(s):  
SC Schimmel ◽  
GB Thursby ◽  
MA Heber ◽  
MJ Chammas
Keyword(s):  
Water Toxicity ◽  
Receiving Water

Assessing wastewater dilution in small rivers with high resolution conductivity probes

2009 ◽  
Vol 59 (8) ◽  
pp. 1593-1601 ◽  
Author(s):  
Christoph Ort ◽  
Hansruedi Siegrist
Keyword(s):  
Flow Direction ◽  
Temperature Data ◽  
Small Rivers ◽  
Temporal Behavior ◽  
Dilution Factor ◽  
Accurate Identification ◽  
Sampling Locations ◽  
Cheap Alternative ◽  
Receiving Water

Installation and maintenance of flow gauging stations to assess wastewater dilution in small creeks is expensive. The method outlined in this paper provides a flexible and cheap alternative for situations with dilution factors smaller than 10 and unambiguous flow direction. It is shown that conductivity profiles from three sampling locations enable accurate identification of the dilution factor with an uncertainty of ±10–30%. Furthermore, much insight can be gained on the temporal behavior of both, the receiving water and the wastewater treatment system by combined analysis of conductivity and temperature data. In this case study the data also enabled identification and tracking down of illegal polluters.

Modelling of Combined Sewer Overflow Impacts on the Receiving Water Quality: Case Studies Hron and Drava

2017 ◽  
Author(s):  
Marek Sokáč ◽  
Marta Jerković
Keyword(s):  
Water Quality ◽  
Case Studies ◽  
Slovak Republic ◽  
Treatment Plant ◽  
Combined Sewer Overflows ◽  
Combined Sewer ◽  
Sewer Overflows ◽  
The Town ◽  
Receiving Water

Paper analyses the influences of combined sewer overflows (CSO’s), on the receiving water quality, but generally deals also with various types of storm water management in urban areas. The first case study analyses the impacts of the continuous (wastewater treatment plant in the town Osijek) and discontinuous pollution sources (CSO’s in the town Osijek) on the quality of the receiving water – the Drava river (Croatia). The second modelling case study was performed on the river Hron (Slovak republic). In this study, the impacts on the water quality from combined sewer overflows form the biggest town on Hron River – Banská Bystrica were studied, as well as four feasible alternatives of storm sewer management (different mixing ratio, different size of storm tanks) were analysed. For both case studies, the mathematical simulation model MIKE11 (Danish Hydraulic Institute, DHI) was used.

Sources of Heavy Metals and their Impacts on Wastewater Treatment and Receiving Water Bodies' Quality – Case Study of a Metropolitan Area

1987 ◽  
Vol 19 (9) ◽  
pp. 133-144 ◽  
Author(s):  
Constantine Yapijakis ◽  
Fotios Papamichael
Keyword(s):  
Heavy Metals ◽  
New York ◽  
New York City ◽  
The Other ◽  
Major Contributor ◽  
Priority Pollutants ◽  
Disposal Options ◽  
Receiving Water ◽  
Comprehensive Study

In accordance with the USEPA General Pretreatment Regulations, New York City has conducted a comprehensive study to establish a local industrial pretreatment program. Heavy metals (Cu, Cr, Pb, Ni, Zn, Cd, and Hg) were the only priority pollutants found to be consistently present in the wastewater, and electroplating industry is the major contributor, as previously suspected. Heavy metals do not affect the performance of the treatment plants, as their levels at all plants are below the reported threshold limits. On the other hand, the existing levels of heavy metals found in NYC sludges limit its disposal options. Pretreatment can significantly decrease the amounts of Cr, Ni, and Cd discharged into the Harbor by NYC treatment plants.

Linking Receiving Water Impacts to Sources and to Water Quality Decisions: Using Nutrients as an Initial Case Study

2012 ◽  
Vol 2012 (11) ◽  
pp. 5025-5039
Author(s):  
Rosalyn D. Matthews ◽  
Damann Anderson ◽  
Dan Burden ◽  
Grace Johns ◽  
Anthony Janicki ◽  
...  
Keyword(s):  
Water Quality ◽  
Receiving Water
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