Embryotoxic and genotoxic potential of sewage system biofilm and river sediment in the catchment area of a sewage treatment plant in Switzerland

2011 ◽  
Vol 74 (5) ◽  
pp. 1271-1279 ◽  
Author(s):  
Nadja Häfeli ◽  
Patrick Schwartz ◽  
Patricia Burkhardt-Holm
Hadmérnök ◽  
2019 ◽  
Vol 14 (2) ◽  
pp. 202-212
Author(s):  
Mirjana Horvat ◽  
Zoltan Horvat ◽  
Dániel Koch ◽  
Fruzsina Majer

This paper presents the results of a preliminary analysis of Palic-Ludas catchment area near the town of Subotica in Serbia. With the aim of improving environmental situation of the considered catchment, the authors started by conducting a detailed investigation of the current situation of this area. The examination focused on obtaining and evaluating existing data in order to derive some conclusion about the present status of this catchment. This paper offers a description of the important water bodies on Palic-Luda catchment, while including the most influential hydraulic structures. After evaluating the gathered data, a basic water budget model ofPalic-Ludas lake system was constructed. The model included all the main water budget elements, the outflow from the sewage treatment plant into Lake Palic, precipitation, evaporation as well as the ground water interflow. After conducting a one year simulation the results were assessed and the influence of each component of the water budget was examined.


2016 ◽  
Vol 17 (1) ◽  
pp. 136-142
Author(s):  
Mirosław Skorbiłowicz ◽  
Elżbieta Skorbiłowicz ◽  
Paulina Wójtowicz ◽  
Piotr Ofman ◽  
Emilia Zamojska

2011 ◽  
Vol 63 (8) ◽  
pp. 1707-1715 ◽  
Author(s):  
B. van den Akker ◽  
V. Whiffin ◽  
P. Cox ◽  
P. Beatson ◽  
N. J. Ashbolt ◽  
...  

This study employed Quantitative Microbial Risk Assessment (QMRA) to estimate the gastrointestinal risks associated with Cryptosporidium and Giardia discharged from three STPs located within the Lake Burragorang catchment. The QMRA considered baseline and various hazardous event scenarios (e.g. plant failure and heavy rainfall). Under baseline conditions, the combined effect of constructed barriers, catchment barriers and dilution reduced pathogen numbers from the discharge of all three STPs by 10 to 14 orders of magnitude. This was sufficient for the risk to be well below currently mooted benchmarks of ‘tolerable risk’, even when relatively conservative assumptions were applied. For all hazardous event scenarios, the level of risk remained low, which illustrated the benefit of multiple barriers. Provisionally it appears that the STPs currently discharging into the waterways of the catchment do not pose an unacceptable or unmanageable risk to Sydney's drinking water consumers.


2020 ◽  
Vol 15 (2) ◽  
pp. 142-151
Author(s):  
Peter Lukac ◽  
Lubos Jurik

Abstract:Phosphorus is a major substance that is needed especially for agricultural production or for the industry. At the same time it is an important component of wastewater. At present, the waste management priority is recycling and this requirement is also transferred to wastewater treatment plants. Substances in wastewater can be recovered and utilized. In Europe (in Germany and Austria already legally binding), access to phosphorus-containing sewage treatment is changing. This paper dealt with the issue of phosphorus on the sewage treatment plant in Nitra. There are several industrial areas in Nitra where record major producers in phosphorus production in sewage. The new wastewater treatment plant is built as a mechanicalbiological wastewater treatment plant with simultaneous nitrification and denitrification, sludge regeneration, an anaerobic zone for biological phosphorus removal at the beginning of the process and chemical phosphorus precipitation. The sludge management is anaerobic sludge stabilization with heating and mechanical dewatering of stabilized sludge and gas management. The aim of the work was to document the phosphorus balance in all parts of the wastewater treatment plant - from the inflow of raw water to the outflow of purified water and the production of excess sludge. Balancing quantities in the wastewater treatment plant treatment processes provide information where efficient phosphorus recovery could be possible. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. There are also two outflows - drainage of cleaned water to the recipient - the river Nitra - 9.9 kg Ptot/day and Ptot content in sewage sludge - about 120.3 kg Ptot/day - total 130.2 kg Ptot/day.


2008 ◽  
Vol 37 (2) ◽  
Author(s):  
Maciej Walczak

Changes of microbial indices of water quality in the Vistula and Brda rivers as a result of sewage treatment plant operationThis paper reports the results of studies of microbiological changes in the water quality of the Vistula and Brda rivers after the opening of sewage treatment plants in Bydgoszcz. The study involved determining the microbiological parameters of water quality. Based on the results obtained, it was found that the quality of the water in both rivers had improved decidedly after the opening of the plants, although an increased number of individual groups of microorganisms was found at the treated sewage outlet from one of the plants.


2000 ◽  
Vol 36 (4) ◽  
pp. 161-171
Author(s):  
KENITSU KONNO ◽  
NAOKI ABE ◽  
YOSHIRO SATO ◽  
KOJI AKAMATSU ◽  
MAKOTO ABE ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document