scholarly journals Preliminary Analysis of the Palic Ludas Catchment

Hadmérnök ◽  
2019 ◽  
Vol 14 (2) ◽  
pp. 202-212
Author(s):  
Mirjana Horvat ◽  
Zoltan Horvat ◽  
Dániel Koch ◽  
Fruzsina Majer
Keyword(s):  
Water Budget ◽  
Preliminary Analysis ◽  
Catchment Area ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Hydraulic Structures ◽  
One Year ◽  
The Town ◽  
Existing Data

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.

Performance of UASB based sewage treatment plant in India: polishing by diffusers an alternative

2011 ◽  
Vol 63 (4) ◽  
pp. 680-688 ◽  
Author(s):  
R. Walia ◽  
P. Kumar ◽  
I. Mehrotra
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Total Coliform ◽  
Point Of View ◽  
Upflow Anaerobic Sludge Blanket ◽  
Uasb Reactor ◽  
Anaerobic Sludge ◽  
Detention Ponds ◽  
One Year

In India, recently, upflow anaerobic sludge blanket (UASB) based sewage treatment plants (STPs) have come up in a big way. Sequence adopted: screens- grit chambers- UASB reactors followed by one-day detention ponds (DP). Performance of DPs located at five STPs (27–70 ML/d) was evaluated over a period of one year from July 2004 to July 2005. The installation of these non-algal ponds reduced land requirement, but from treatment point of view it at best offered only removal of solids washed out of the UASB reactor. Total coliform count in the effluent from ponds ranging from 106 to 109 MPN/100 mL is more than the maximum permissible limit of 10,000 MPN/100 mL. A need has, therefore, been felt to evaluate the possibility of aerating the effluent from UASBR. During aeration, ORP and DO increase, whereas COD and BOD decrease. In a continuous aeration ~50% reduction in COD and nearly 50% increase in DO saturation (DO/DOs) can be achieved by increasing ORP from −100 to 122 mV. Regression equation established between ORP and COD/CODi & DO/DOs may find wide application.

Occurrence and Elimination of Nonylphenol Ethoxylates and Metabolites in Municipal Wastewater and Effluents

1998 ◽  
Vol 33 (3) ◽  
pp. 389-402-402 ◽  
Author(s):  
Hing-Biu Lee ◽  
Thomas E. Peart
Keyword(s):  
Carboxylic Acids ◽  
Municipal Wastewater ◽  
Sewage Treatment ◽  
Elimination Rate ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Nonylphenol Ethoxylates ◽  
Wastewater Samples ◽  
One Year ◽  
Final Effluent

Abstract A survey of the concentrations of nonylphenol ethoxylates (NPnEO) and their metabolites in wastewater samples collected from a Canadian sewage treatment plant using primary and secondary treatment is presented. Twenty-four-hour composite raw sewage, primary effluent and final effluent samples were collected monthly over a one-year period. Levels of NPnEO (n = 1 to 17) and their metabolites, nonylphenol (NP) and nonylphenoxy carboxylic acids (NPnEC), in these samples were determined by HPLC and GC/MS methods. While ca. 85% of the total alkylphenolics in raw sewage are ethoxylates, the major component (nearly 80%) in the final effluent was in the form of carboxylic acids. During this study period, the median total alkylphenolic concentrations in raw sewage and final effluent were 526 and 248 nmol/L, respectively, representing an overall elimination rate of 53%. The estimated daily discharge of the nonylpheno-lics to the aquatic environment varied from 15 to 44 moles, with a median value of 20 moles. These data suggested that conventional sewage treatments are ineffective in the removal of the surfactant-derived metabolites.

scholarly journals THE IMPACT OF SEWAGE TREATMENT PLANT ON THE AMOUNT OF HEAVY METALS IN WATER OF THE SUPRAŚL RIVER CATCHMENT AREA

2016 ◽  
Vol 17 (1) ◽  
pp. 136-142
Author(s):  
Mirosław Skorbiłowicz ◽  
Elżbieta Skorbiłowicz ◽  
Paulina Wójtowicz ◽  
Piotr Ofman ◽  
Emilia Zamojska
Keyword(s):  
Heavy Metals ◽  
Catchment Area ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
River Catchment ◽  
The Impact

Estimating the risk from sewage treatment plant effluent in the Sydney catchment area

2011 ◽  
Vol 63 (8) ◽  
pp. 1707-1715 ◽  
Author(s):  
B. van den Akker ◽  
V. Whiffin ◽  
P. Cox ◽  
P. Beatson ◽  
N. J. Ashbolt ◽  
...  
Keyword(s):  
Catchment Area ◽  
Heavy Rainfall ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Quantitative Microbial Risk Assessment ◽  
Microbial Risk Assessment ◽  
Microbial Risk ◽  
Tolerable Risk ◽  
Hazardous Event

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.

Zbąszynek (Neu Bentschen)

Architectura ◽  
2019 ◽  
Vol 47 (1-2) ◽  
pp. 116-131
Author(s):  
Miron Urbaniak
Keyword(s):  
Catholic Church ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Town Hall ◽  
Protestant Church ◽  
The Status ◽  
Railway Workers ◽  
The Town ◽  
Privately Owned

AbstractZbąszynek (Neu Bentschen), a German border post, with accommodation for railway workers, customs officials, postmen and border guards, was established primarily between 1923 and 1930. It was built in the middle of the countryside, designed according to the garden city concept and provided with an urban technical infrastructure. In the years 1932 to 1945, the town had the status of a rural parish. The majority of the houses and civic buildings (railway station, school, town hall, Protestant church, Catholic church, inn) were designed by Wilhelm Beringer from the Deutsche Reichsbahn administration in Frankfurt (Oder). He incorporated neo-baroque and expressionist motifs. The monumental and expressionist water tower, designed by Bruno Möhring from Berlin, is also worth noting. The town comprised two parts. The eastern part contained housing for company workers and officials, a school at the main town square and an inn; the western part was intended – though the idea was short-lived – to comprise privately owned houses, both churches and the town hall. By design, the slaughterhouse, sewage treatment plant and cemetery were all placed on the periphery of the town. The two parts were, and still are divided by ul. Wojska Polskiego, Zbąszynek’s main street. Its southern end is the imposing pl. Dworcowy, the Station Square, taking the form of a cour d’honneur.

scholarly journals The cultural eutrophication of Lac la Biche, Alberta, Canada: a paleoecological study

2008 ◽  
Vol 65 (10) ◽  
pp. 2211-2223 ◽  
Author(s):  
D. W. Schindler ◽  
Alexander P. Wolfe ◽  
Rolf Vinebrooke ◽  
Angela Crowe ◽  
Jules M. Blais ◽  
...  
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Cultural Eutrophication ◽  
Near Surface ◽  
European Settlement ◽  
Show Evidence ◽  
Northeastern Alberta ◽  
The Town ◽  
Multiproxy Approach

A multiproxy paleoecological investigation of Lac la Biche, a large boreal lake in northeastern Alberta, Canada, revealed that the lake was eutrophic before European settlement but has undergone additional cultural eutrophication in the past 30 to 50 years. Annual fluxes to sediments of phosphorus, nitrogen, carbon, and inorganic sediments have increased with time. A declining N–P ratio has increasingly favored nitrogen-fixing cyanobacteria. Increased deposition of microbial pigments and diatom frustules and a recent shift in diatom species also indicate increasing eutrophication. Biogenic silica increased with time, but there is no evidence of a near-surface decline that would indicate silica limitation. Stable isotopes suggest that an increasing proportion of carbon deposited in sediments is of in-lake origin, indicating increased productivity. In the basin nearest the town of Lac La Biche, an increase in δ15N followed the construction of the sewage treatment plant, but more recently, decreased δ15N in both basins suggests that nitrogen fixation has become a more important source of nitrogen. Despite documented damage to the fishery of the lake, zooplankton fossils do not show evidence of a strong trophic cascade. The study illustrates the power of a multiproxy approach in obtaining reliable paleolimnological conclusions.

scholarly journals One year monitoring of norovirus in a sewage treatment plant in Rio de Janeiro, Brazil

2009 ◽  
Vol 8 (1) ◽  
pp. 158-165 ◽  
Author(s):  
Matías Victoria ◽  
Flávia Ramos Guimarães ◽  
Tulio Machado Fumian ◽  
Fabiana Fioretti Martins Ferreira ◽  
Carmen Baur Vieira ◽  
...  
Keyword(s):  
Acute Gastroenteritis ◽  
Rio De Janeiro ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Nucleotide Sequencing ◽  
Removal Ratio ◽  
High Concentrations ◽  
One Year ◽  
Seminested Pcr

Norovirus (NoV) is one of the most important aetiological agents of acute gastroenteritis both in developed and developing countries. NoV is shed in high concentrations by infected persons and contaminates recreational and drinking water through sewage discharge into the environment. The aim of this study was to determine the prevalence, genotypes and removal ratio of NoV by PCR, seminested-PCR and quantitative PCR (qPCR) assays in a sewage treatment plant in Rio de Janeiro city, Brazil, during one year of surveillance. NoV was detected in 7 (15%), 14 (29%) and 28 (58%) samples using PCR, seminested-PCR and qPCR, respectively. The mean removal ratio for the activated sludge process was 0.6 log10 for NoV genogroup I (GI) and 0.32 log10 for NoV genogroup II (GII). The peak NoV concentration was detected in the coldest months, with 53,300 genomic copies/litre. Nucleotide sequencing and phylogenetic analysis revealed that five strains clustered with GI strains and six with GII strains. This study demonstrates that NoV spreads into the environment despite the sewage treatment process and remains a source of waterborne outbreaks of acute gastroenteritis.

Function of a Sewage Treatment Plant in Rodgau, Germany

2019 ◽  
Vol 2 (1) ◽  
pp. 49-52
Author(s):  
Robin Bialdiga
Keyword(s):  
Waste Water ◽  
Adsorption Process ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Biological Processes ◽  
Industrial Waste Water ◽  
Physical Treatment ◽  
Reduction Processes ◽  
The Town

Rodgau has nearly 50.000 citizens and have their own sewage treatment plant. The wastewater of the whole town has to be treated to the point where it can be released in the back which gives the town its name, the Rodgau. There are two main sources of wastewater, municipal and industrial waste water. (www.rodgau.de 8.9.17) The objective of Sewage Treatment in Rodgau especially is that the waste water after beingprocess can go directly to Rodau river. The drinking water of Rodgau is not coming from thesewage treatment plant. (Bundesministerium der Justiz und für Verbraucherschutz) The sewage Treatment Plant in Rodgau has the capacity up to 75.000 citizen value (EW). In this sewage treatment there are physical, chemical and biological processes. In the chemical processes there are neutralization, oxidation and reduction processes. The physical treatment including sedimentation, extraction, and adsorption process. Then main steps of the sewage treatment are screening and filtration of the bigger pollutants, transforming of elements and separating the sludge.( ATV-Handbuch (1999)) Different options can be seen which were used in the Rodgau plant. The Rodgau sewagetreatment plant is at state of the art, very efficient and can be a great example for sewagetreatment plants of other cities.

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