scholarly journals Ambiance rose production and nutrient supply in soil irrigated with treated sewage

2015 ◽  
Vol 19 (8) ◽  
pp. 755-759 ◽  
Author(s):  
Giuliano Gabrielli ◽  
Jorge L. da Paixão ◽  
Bruno Coraucci ◽  
Adriano L. Tonetti
Keyword(s):  
Sewage Treatment ◽  
Nutrient Supply ◽  
Stem Diameter ◽  
Fresh Weight ◽  
Flower Buds ◽  
Sand Filter ◽  
Sewage Treatment Plants ◽  
Anaerobic Reactor ◽  
Treated Effluent ◽  
Treated Sewage

<title>ABSTRACT</title><p>Effluents from secondary sewage treatment plants may contain amount of nutrients with the potential to cause eutrophication of water bodies. One of the ways to decrease this influx of nutrients would be the agricultural reuse. Therefore, the objective of this study was to evaluate the irrigation of roses of the Ambiance variety with the effluent from an anaerobic reactor and an intermittent sand filter (nitrified effluent). The trial lasted for 152 days. The dose of nitrogen applied via effluent was 91% of the crop requirement; of phosphorus, 3.5% (very low); and of potassium, 23%. There was no difference among treatments for the evaluated variables: diameter and length of stem, diameter and length of bud, and fresh weight of flower buds. The production of floral stems was higher in treatments with effluents without conventional fertilization. It is concluded that the irrigation with a treated effluent is an alternative for the fertilization of ambiance roses.</p>

Changes of microbial indices of water quality in the Vistula and Brda rivers as a result of sewage treatment plant operation

2008 ◽  
Vol 37 (2) ◽  
Author(s):  
Maciej Walczak
Keyword(s):  
Water Quality ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Sewage Treatment Plants ◽  
Plant Operation ◽  
Treated Sewage ◽  
Microbiological Parameters ◽  
Microbial Indices

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.

Nutrient reduction evaluation of sewage effluent treatment options for small communities

2005 ◽  
Vol 51 (10) ◽  
pp. 221-229 ◽  
Author(s):  
P.D. Beavers ◽  
I.K. Tully
Keyword(s):  
Total Nitrogen ◽  
Sewage Treatment ◽  
Subsurface Flow ◽  
Primary Objective ◽  
Effluent Treatment ◽  
Sand Filter ◽  
Small Communities ◽  
Treatment Processes ◽  
Treated Effluent ◽  
Slow Sand Filter

Small communities that are sewered by either package sewage treatment plants or on-site sewerage facilities are finding that the ground and surface waters are being contaminated. Nitrogen, which typically is not removed in these conventional systems, is a major concern. This project evaluated the capability of four sewage treatment technologies to reduce the amount of nitrogen being discharged in the effluent to the receiving environment. The four sewage treatment processes evaluated include a recirculating sand filter, biofilter, slow sand filter and constructed subsurface flow wetland. These processes were evaluated for their capability to reduce nitrogen, phosphorus, BOD5 and TSS. The primary objective of the project was to evaluate the capability of these treatment processes to reduce nitrogen using biological processes nitrification and denitrification. This paper reports on the performance of these processes to reduce nitrogen. The study demonstrated that the biofilter was capable of removing from a primary treated influent 40% of the total nitrogen. For the same quality influent the recirculating sand filter was capable of removing 35% of the total nitrogen. Secondary treated effluent was fed to the slow sand filter and the subsurface flow wetland. There was a 52% reduction in total nitrogen through the wetland however there was virtually no reduction in total nitrogen through the slow sand filter.

scholarly journals Occurrence of 17α-ethinylestradiol in Paranoá Lake watershed (Brasília, Brazil): sewage, freshwater and treated water

2021 ◽  
Vol 16 (4) ◽  
pp. 1
Author(s):  
Juliana Pinheiro Gomes ◽  
Giulia Oliveira Timo ◽  
Lícia Murito de Paula ◽  
Thales Viana Labourdette Costa ◽  
Paulo Roberto de Souza Rocha Júnior ◽  
...  
Keyword(s):  
Water Supply ◽  
Emerging Contaminants ◽  
Sewage Treatment ◽  
Water Reservoir ◽  
Elisa Method ◽  
Sewage Treatment Plants ◽  
Treated Water ◽  
Treated Sewage ◽  
Effect Concentration ◽  
Environmental Agency

Emerging contaminants such as 17α-ethynylestradiol (EE2) can be discharged from sewage systems and contaminate water supplies. Paranoá Lake is a strategic water reservoir in Brasília (Brazil) that receives treated sewage from sewage treatment plants (STPs) and has recently become a water supply. This study monitored EE2 residues in different matrices from Paranoá Lake watershed using the ELISA method. This monitoring was performed together with the local environmental agency in two periods. EE2 was detected in all sewage samples showing that this residue is continually being discharged into the lake. However, EE2 was found in only one freshwater sample (0.07 ng L-1), which is below the predicted no-effect concentration considered as a risk for aquatic animals. EE2 was not detected in treated water. Nevertheless, the increased use of freshwater as a water supply signals the need for continuous EE2 monitoring in the lake.

Extension of the Sewage Treatment Plants in Stockholm: Some Technical and Economical Aspects

1993 ◽  
Vol 27 (5-6) ◽  
pp. 357-367 ◽  
Author(s):  
J. Hultgren ◽  
L. G. Reinius
Keyword(s):  
Nitrogen Removal ◽  
Phosphorus Removal ◽  
Sewage Treatment ◽  
Good Chance ◽  
Sewage Treatment Plants ◽  
Treated Sewage ◽  
The Future ◽  
Future Extension ◽  
The City

The requirements for the sewage treatment plants in Sweden will be more stringent in the future. The three plants in Stockholm, Henriksdal, Bromma and Loudden have to be extended to meet requirements for nitrogen removal and increased phosphorus removal. Since 1989 the plants have the same recipient for the treated sewage and to save money during the future extension the city would like to regard the three effluents as one common. The authorities have not yet decided to admit this but there is a good chance for it. The paper describes the strategy for extension and how the plants have been designed.

scholarly journals Alterations in the Fat Body Cells of Rhinocricus padbergi (Diplopoda) Resulting from Exposure to Substrate Containing Sewage Sludge

2012 ◽  
Vol 18 (2) ◽  
pp. 317-323 ◽  
Author(s):  
Raphael Bastão de Souza ◽  
Carmem Silvia Fontanetti
Keyword(s):  
Sewage Sludge ◽  
Fat Body ◽  
Close Contact ◽  
Sewage Treatment ◽  
Degraded Soil ◽  
Sewage Treatment Plants ◽  
Morphological Alterations ◽  
Ecotoxicological Tests ◽  
Treated Sewage ◽  
Toxic Agents

AbstractThe final disposal of residues generated at sewage treatment plants (STPs) has become a major problem for cities, due to the increase in the amount of treated sewage. One of the alternatives for the residue, labeled “sewage sludge,” is its reuse in agriculture and in degraded soil. However, not all pathogens and metals present in it are eliminated during treatment. Diplopods have been used as bioindicators in ecotoxicological tests as they are constantly in close contact with the soil. Owing to this fact, the purpose of this study was to expose specimens of the diplopod Rhinocricus padbergi to substrate containing sewage sludge collected at STPs to analyze morphological alterations in their parietal and perivisceral fat body, where substances are stored. The exposures were held for 7, 15, or 90 days at different concentrations of sewage sludge (control, 1%, 10%, and 50%). The parietal fat body showed no alterations in any of the three exposure periods or concentrations. Alterations in the perivisceral fat body were observed for all exposure periods. According to the results, we suggest that the sludge used has toxic agents responsible for changing the animal's perivisceral fat body.

The 13C, 15N and 34S signatures of a rocky reef planktivorous fish indicate different coastal discharges of sewage

2004 ◽  
Vol 55 (7) ◽  
pp. 689 ◽  
Author(s):  
Troy F. Gaston ◽  
Antionette Kostoglidis ◽  
Iain M. Suthers
Keyword(s):  
Turnover Rate ◽  
Isotope Composition ◽  
Sewage Treatment ◽  
Fish Muscle ◽  
Rocky Reef ◽  
Stable Isotope Composition ◽  
Regional Effect ◽  
Treated Effluent ◽  
Treated Sewage ◽  
Large Primary

We assessed the effects of primary, secondary and tertiary treated sewage on the stable isotope composition of the viscera and muscle of the zooplanktivorous eastern hula fish (Plesiopidae: Trachinops taeniatus). Fish were collected from three regions during three consecutive summer months for 2 years. In comparison to fish from control sites, the muscle δ15N of fish at outfall sites was significantly enriched by secondary and tertiary treated effluent. We estimate that 30–50% of nitrogen in hula fish near outfalls may be sewage-derived. The δ34S content of muscle was similar at all regions and sites (20–21‰), although it was significantly depleted by 1–2‰ at the tertiary treated outfall site. Detection of a comparatively minor volume of effluent (<6 ML day–1) in fish muscle may be due to its slower tissue turnover rate and the continuous discharge of effluent at outfall sites, compared to major yet sporadic rainfall or oceanographic events. The isotopic composition of hula fish from near a large primary treated sewage outfall off the coast of Sydney was not significantly different from one of the control sites, indicating a regional effect of four outfalls discharging >1000 ML day–1. With increasing upgrades to sewage treatment, stable isotopes may become useful tracers of anthropogenic nutrients in an oligotrophic environment.

Impact of sewage treatment plants and combined sewer overflow basins on the microbiological quality of surface water

2006 ◽  
Vol 54 (3) ◽  
pp. 95-99 ◽  
Author(s):  
A. Rechenburg ◽  
Ch. Koch ◽  
Th. Claßen ◽  
Th. Kistemann
Keyword(s):  
Sewage Treatment ◽  
Microbiological Quality ◽  
Weather Conditions ◽  
Treated Wastewater ◽  
Microbial Indicators ◽  
Sewage Treatment Plants ◽  
Treated Effluent ◽  
Combined Sewer ◽  
Combined Sewage Overflow

In a small river catchment, microbiological quality of different sewage treatment plants under regular conditions and in case of heavy rainfall, when combined sewage overflow basins (CSOs) are activated, was examined regarding microbial indicators and pathogens. In the watercourse, no self-cleaning effects could be observed. Small compact treatment plants discharge treated wastewater with a poor microbiological quality compared to river water quality and the quality of treated wastewater of larger plants. During storm water events, concentrations of microorganisms downstream of sewer overflows were approximately two logs higher than during dry weather conditions. Concentrations of parasites decreased slowly during the overflow, in parallel to filterable matter and particle-bound substances. The annual load of microorganisms originating from CSOs significantly exceeds the load from treated effluent of the sewage plants. Thus, an improved hygienic quality of the water course could be achieved by preventing overflows and by enhancing sewage treatment plants.

Fate and analysis of endocrine disrupting chemicals in some sewage treatment plants in Australia

2008 ◽  
Vol 58 (11) ◽  
pp. 2187-2194 ◽  
Author(s):  
H. M. Coleman ◽  
S. J. Khan ◽  
G. Watkins ◽  
R. M. Stuetz
Keyword(s):  
New South ◽  
Endocrine Disrupting Chemicals ◽  
Sewage Treatment ◽  
Tertiary Treatment ◽  
Domestic Waste ◽  
Sewage Treatment Plants ◽  
South Wales ◽  
Androgenic Activity ◽  
Treated Sewage ◽  
Endocrine Disrupting

There are limited studies on the fate and levels of endocrine disrupting chemicals in sewage treatment plants in Australia. Research undertaken in Europe and North America has shown biologically significant levels of both oestrogenic and androgenic chemicals in sewage effluent. The aim of this work was to determine the oestrogenic and androgenic activities of raw and treated sewage from sewage treatment plants run by MidCoast Water, New South Wales, Australia. Oestrogenic and androgenic activities were measured using a yeast screen bioassay. Results showed that the raw effluent contained biologically significant levels of both oestrogenic (0.58–2.91 ng/l) and androgenic (216–480 ng/l) activities. Androgenic activity was significantly higher than oestrogenic activity, which was consistent with other Australian studies and was attributed to the higher levels of androgens in domestic waste from human excretion compared to oestrogens. Secondary treatment (using activated sludge) removed the majority of the oestrogenic and androgenic activity (up to 99%). Tertiary treatment by UV removed varying levels of oestrogenic (19–69%) and androgenic (5–55%) activities. A Membrane Bioreactor (MBR) at one of the STPs, which consists of an MBR followed by electrochlorination removed over 87% of the oestrogenic activity and over 98% of androgenic activity from raw sewage samples. However, levels which could be biologically significant still remained after secondary and tertiary treatment (&gt;0.1 ng/l oestrogenic activity and &gt;1 ng/l androgenic activity).

scholarly journals The efficiency of galvanic wastewater treatment facility 'Frad' in Aleksinac

2020 ◽  
Vol 8 (2) ◽  
pp. 78-85
Author(s):  
Jasmina Veličković ◽  
Nebojša Arsić ◽  
Ljiljana Stošić
Keyword(s):  
Wastewater Treatment ◽  
Batch Reactor ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Chemical Oxidation ◽  
Sewage Treatment Plants ◽  
Coagulation And Flocculation ◽  
Treated Effluent ◽  
The Republic

The technological process of Galvano-chemical protection, according to qualitatively-quantitative characteristics, represents one of the most complex contaminants in wastewater. A large number of contaminants (metal ions, cyanides, acids, bases, grease and oils, organic solvents, surfactants, phosphates, etc.), found in galvanic wastewater are treated through conventional methods (chemical oxidation and reduction, neutralization, sedimentation, coagulation and flocculation). The reason why galvanic wastewater treatment systems in the Republic of Serbia are conventional is of economic nature. The present study has been undertaken to evaluate the performance of Sewage Treatment Plant located at Aleksinac, Company of "Frad" district which is based on Sequential Batch Reactor process. Performance of this plant is an essential parameter to be monitored as the treated effluent is discharged into the Moravica River. The Performance Evaluation will also help for the better understanding of design and operating difficulties (aeration, blowers, etc.) in Sewage Treatment Plant. Research goal: The efficiency of sewage treatment plants can be illustrated by a study on the evaluation of pollutant levels of the influent and the effluent at the treatment plant of sewage treatment plants discharging into the environment.

scholarly journals REUSE OF TREATED SEWAGE EFFLUENT IN AIRPORTS: IRRIGATION OF ORNAMENTAL PLANT NURSERY

2013 ◽  
pp. 264-273 ◽  
Author(s):  
Eduardo de Aguiar Do Couto ◽  
Paula Peixoto Assemany ◽  
Maria Lúcia Calijuri ◽  
Aníbal da Fonseca Santiago ◽  
Luna Gripp Simões Alves
Keyword(s):  
Plant Growth ◽  
Sewage Treatment ◽  
Ammonia Nitrogen ◽  
World Health ◽  
Sewage Effluent ◽  
Treated Effluent ◽  
Treated Sewage ◽  
Plant Nursery ◽  
Removal Efficiencies ◽  
Treated Sewage Effluent

Airports consume significant amounts of water which can be compared to the volume consumed by mid-size cities, thus practices aimed at reducing water consumption are important and necessary. The objective of this study was to assess the reuse potential of sewage effluent produced at a mid-size international airport for nursery irrigation. The sewage treatment system consisted of a facultative pond followed by a constructed wetland, which were monitored during one hydrological year and the parameters COD, pH, solids, nitrogen, phosphorus and Escherichia coli were analyzed. Removal efficiencies of 85% and 91% were achieved for COD and solids, respectively. Removal efficiencies for ammonia nitrogen and total phosphorus were 77% and 59%, respectively. In terms of E. coli concentration, the treated effluent met the recommendations by the World Health Organization for reuse in irrigation with the advantage of providing high levels of residual nutrient. The ornamental species Impatiens walleriana was irrigated with treated sewage effluent and plant growth characteristics were evaluated. The experiment showed that reuse can enhance plant growth without significantly affecting leaf tissue and soil characteristics. This study highlighted the importance of simple technologies for sewage treatment especially in countries which still do not present great investment in sanitation and proved that effluent reuse for landscape irrigation can provide great savings of water and financial resources for airport environments.

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