The Vienna Sewerage System

1990 ◽  
Vol 22 (5) ◽  
pp. 235-240
Author(s):  
Peter Bortenschlager
Keyword(s):  
Water Quality ◽  
Groundwater Quality ◽  
Treatment Plant ◽  
Waste Waters ◽  
Sewerage System ◽  
Sewage System ◽  
Improve Water Quality ◽  
The City

After the practice for many decades had been to introduce waste waters into the nearest receiving bodies, i.e. Wien River, Donaukanal, and Danube, a multitude of intercepting sewers and a central treatment plant were built from 1969 to 1980. Subsumed under the working title “WABAS 80 -- Wiener Abwasserbeseitigungssysteme 1980”, these facilities guaranteed that all effluent produced in Vienna was brought to the central treatment plant for purification. Since 1986 a programme has been in effect to expand the existing sewage system and improve obsolete sewers, the aim being to preserve groundwater quality. Providing also for the construction of relief interceptors along the Donaukanal and the Wien River as well as the enlargement of the central treatment plant, the programme was designed not only to preserve but also to improve water quality in the Donaukanal and the Danube itself. The City has set apart AS 12 000 million for this project, which is to be completed by 2000.

Leading the City of Baltimore into the 21st Century: Flexible Treatment Solutions and Integrated Raw Water Management

2010 ◽  
Vol 5 (4) ◽  
Author(s):  
J. L. Manuszak ◽  
M. MacPhee ◽  
S. Liskovich ◽  
L. Feldsher
Keyword(s):  
Water Management ◽  
Water Quality ◽  
Water Supply ◽  
Conceptual Design ◽  
Membrane Filtration ◽  
Treatment Plant ◽  
Low Pressure ◽  
Management Tool ◽  
Raw Water ◽  
The City

The City of Baltimore, Maryland is one of many US cities faced with challenges related to increasing potable water demands, diminishing fresh water supplies, and aging infrastructure. To address these challenges, the City recently undertook a $7M study to evaluate water supply and treatment alternatives and develop the conceptual design for a new 120 million gallon per day (MGD) water treatment plant. As part of this study, an innovative raw water management tool was constructed to help model source water availability and predicted water quality based on integration of a new and more challenging surface water supply. A rigorous decision-making approach was then used to screen and select appropriate treatment processes. Short-listed treatment strategies were demonstrated through a year-long pilot study, and process design criteria were collected in order to assess capital and operational costs for the full-scale plant. Ultimately the City chose a treatment scheme that includes low-pressure membrane filtration and post-filter GAC adsorption, allowing for consistent finished water quality irrespective of which raw water supply is being used. The conceptual design includes several progressive concepts, which will: 1) alleviate treatment limitations at the City's existing plants by providing additional pre-clarification facilities at the new plant; and 2) take advantage of site conditions to design and operate the submerged membrane system by gravity-induced siphon, saving the City significant capital and operations and maintenance (O&M) costs. Once completed, the new Fullerton Water Filtration Plant (WFP) will be the largest low-pressure membrane plant in North America, and the largest gravity-siphon design in the world.

scholarly journals IL CONTRIBUTO DEI SERVIZI IDRICI INTEGRATI AL FABBISOGNO IRRIGUO DEI COMPRENSORI AGRICOLI: IL CASO DI MILANO

2017 ◽  
Author(s):  
Maurizio Brown
Keyword(s):  
Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Forage Production ◽  
Sewerage System ◽  
Xix Century ◽  
The City ◽  
Effective Water ◽  
Drainage Waters ◽  
Significant Model

During its history Milan city has been able to treasure its wastewater collected by Vettabbia irrigation ditch. Since the XII century, also thanks to Cistercensi (monks from Chiaravalle Abbey) great endeavour, the use of effusing the filthy waters from Vettabbia over the rotten lawns of a great and huge agricultural district, situated in the South the City, was going to become the most spread method used to regain the nutrients contained into the wastewaters and, at the same time, a great procedure to optimize the fresh forage production. During the second half of XIX century this technique was refined and made more efficient in order to allow the sustainable and ecofriendly disposal of the drainage waters raised from the new sewerage system of the City. Since 2004 Milan adopted an effective water treatment plant which permits the reuse of the purified waters for what concerns agriculture, becoming, in this field, the most significant model in Europe.

scholarly journals Variable dynamics of sewage supply to wastewater treatment plant depending on the amount of precipitation water inflowing to sewerage network

2017 ◽  
Vol 33 (1) ◽  
pp. 57-63 ◽  
Author(s):  
Piotr M. Bugajski ◽  
Grzegorz Kaczor ◽  
Krzysztof Chmielowski
Keyword(s):  
Wastewater Treatment ◽  
Water Supply ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Sewerage System ◽  
Sewage System ◽  
Treated Sewage ◽  
Precipitation Water ◽  
Sewerage Network ◽  
Maximum Design

AbstractThe paper analyzes the effect of precipitation water that inflowing to sanitary sewage system as accidental water on the changes in the total amount of treated sewage. The effects of accidental water supply on the total amount of sewage inflowing to treatment plant were analyzed based on mean daily amounts from the investigated periods and mean daily amounts from incidental supplies. The study was conducted in the years 2010–2015. Six characteristic research periods were identified (one per each calendar year), when the amount of sewage in the sanitary sewage system was greater than during dry weather. The analysis of changes in the amount of sewage supplied to the sewerage system in the six investigated periods revealed that the accidental water constituted from 26.8% to 48.4% of total sewage inflowing to the wastewater treatment plant (WWTP). In exceptional situations, during intense rains, the share of precipitation water in the sewerage system would increase up to 75%. Then, the rainwater inflowing the sewerage system caused hydraulic overloading of the WWTP by exceeding its maximum design supply.

scholarly journals Centinela: an early warning system for the water quality of the Cauca River

2014 ◽  
Vol 16 (6) ◽  
pp. 1409-1424 ◽  
Author(s):  
Carlos Vélez ◽  
Leonardo Alfonso ◽  
Arlex Sánchez ◽  
Alberto Galvis ◽  
Gilberto Sepúlveda
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Early Warning ◽  
Early Warning System ◽  
Treatment Plant ◽  
Warning System ◽  
Water Source ◽  
Early Warning Systems ◽  
Drinking Water Source ◽  
The City

The Cauca River is the drinking water source for 1.3 million inhabitants of the city of Cali, Colombia. Although the river discharge is sufficient to handle the water demand of the city all year long, significant water pollution events cause frequent disruption to the Puerto Mallarino Treatment Plant (PMTP) and the water supply service, with substantial social and economic impacts on the city. The sources of pollution include wastewater discharges upstream of the PMTP and important sediment transport from the upstream sub-catchments during heavy rainfall events. Both situations can lead to a closure of the PMTP when the presence of a pollution plume at its intake is evident. This paper presents the design and prototype of a water quality early warning system to anticipate the peaks of pollution in the river, in order to assist the operators in taking timely informed decisions about the operation of the treatment plant. As the published experiences of early warning systems for similar water pollution problems are very limited, the approach to solve the problem using hydroinformatics technologies is worth documenting for utility companies with a similar problem.

Methods to Reduce Hot Return Condensate Temperature Without Compromising Plant Efficiency for Combined Heat and Power Plants

2017 ◽  
Author(s):  
Anil Kumar Addanky
Keyword(s):  
Heat Transfer ◽  
Water Quality ◽  
Power Plant ◽  
Power Plants ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Combined Heat And Power ◽  
Higher Plant ◽  
Improve Water Quality ◽  
Plant Efficiency

This paper describes five methods to achieve effective heat transfer and higher plant efficiency when condensate return temperature is high and treatment is needed to improve water quality in the water treatment plant before sending it to the deaerator for a combined heat and power plant.

Sludge Incineration Process of Kyoto City – The Employment and Heat Balance of the Step Grate Stoker Furnace

1991 ◽  
Vol 23 (10-12) ◽  
pp. 1763-1772 ◽  
Author(s):  
Tomiya Ito
Keyword(s):  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Steady Increase ◽  
Entire Volume ◽  
Sludge Treatment ◽  
Sewerage System ◽  
Sludge Incineration ◽  
Kyoto City ◽  
Sludge Cake ◽  
The City

Kyoto City, an ancient city of international tourism, has been actively constructing its public sewerage system as one of the most important policies of the city. As of April, 1989, 79.6% of the urbanization promotion area of the city has been sewered. The fully completed sewerage system will be established in 1994, the 1200th anniversary of the founding of the city as the ancient Heian capital of Japan. However, the increase of the sewered ratio effects a steady increase in the influent volume of wastewater. Due to the inland location of the city, sludge produced in the wastewater treatment plants has been landfilled after incineration, but recently the securing of appropriate sites for landfill is difficult, and hence sludge treatment and disposal is an important issue for Kyoto City. In order to minimize the ultimate disposal volume, incineration of the entire volume of sludge has been undertaken in early days of sewerage operations. This report introduces the sludge incineration system and assesses the newly adopted step grate stoker furnace. At present, Kyoto City has 4 treatment plants in operation. The Toba Treatment Plant, which has the largest treatment capacity receives sludge cake trucked from the Fushimi Treatment Plant and excess sludge pumped through pipes from the Kisshoin Treatment Plant, and incinerates the whole amount of sludge cake generated in the plant. The sludge cake produced at the Ishida Treatment Plant is incinerated at an adjacent refuse sanitation plant together with the municipal refuse from the city. The characteristics of sludge treatment systems are given in this report. The step grate stoker furnace system was introduced to reduce the final disposal volume and to save energy. Through comparison with the multiple-hearth furnace system the actual results of operation were verified. The volume of generated ash was decreased by more than 50%, and energy consumption was reduced by 77%, resulting in an 18% reduction of operating expenses.

scholarly journals The Influence of the Modernization of the City Sewage System on the External Load and Trophic State of the Kartuzy Lake Complex

2021 ◽  
Vol 11 (3) ◽  
pp. 974
Author(s):  
Jolanta Grochowska ◽  
Renata Tandyrak
Keyword(s):  
Water Quality ◽  
Domestic Sewage ◽  
Individual Characteristics ◽  
External Loading ◽  
Internal Fertilization ◽  
Protective Measures ◽  
Sewage System ◽  
External Sources ◽  
The Individual ◽  
The City

A study was carried out in the Kartuzy lake complex, which has been a receiver of raw domestic sewage since the 1950s. In 2018, the city’s sewage system of Kartuzy was modernized. An analysis of the water quality prior to the modernization of the sewage system revealed that the total phosphorus (TP) load that was introduced to the individual lakes from external sources substantially exceeded the dangerous load concentration (defined by Vollenweider) that causes accelerated eutrophication. The annual TP load introduced to the analyzed lakes in 2017 exceeded the critical load by 200% (Mielenko) to 1000% (Klasztorne Duże). Protective measures reduced the external loading of nutrients. In the case of Mielenko Lake, a 37% decrease in the external TP load was noted, and also a 32% decrease in the external TP load in Karczemne Lake, a 66% decrease in Klasztorne Małe Lake and a 54% decrease in Klasztorne Duże Lake was noted. The protective measures resulted in a slight decrease in the concentrations of phosphorus and nitrogen in the water. However, these changes did not improve the environmental conditions in the lakes. In a situation where the internal fertilization process in the lakes has started, the improvement of water quality will only be possible through restoration efforts with methods adjusted to the individual characteristics of each lake.

Total emission of an urban area considering the interaction between drainage system and treatment plant

1997 ◽  
Vol 36 (8-9) ◽  
pp. 71-76
Author(s):  
Susanne Deyda
Keyword(s):  
Urban Area ◽  
Treatment Plant ◽  
Drainage System ◽  
Calculation Model ◽  
Pollutant Load ◽  
Sewerage System ◽  
Load Calculation ◽  
Rehabilitation Concepts ◽  
Optimal Rehabilitation ◽  
The City

Continuous longterm calculations of quantity and quality processes on the catchment surface, the sewerage system and the treatment plant of the City of Hildesheim have to be carried out in order to estimate the effect of the urban area on the receiving water. The calculations are performed with a pollutant-load-calculation model including a coupled hydrologic-hydrodynamic runoff-transportation module. The achievement of the developed model is shown in the example of two different subcatchments of the City of Hildesheim. With the help of this concept, it is possible to consider the existing transport, storage and treatment capacity more flexible and to find optimal rehabilitation concepts concerning the emission loads just like the resulting costs.

scholarly journals SPATIAL AND TEMPORAL VARIATIONS OF GROUNDWATER QUALITY IN ABEOKUTA CITY, NIGERIA

2020 ◽  
Vol 18 (1) ◽  
pp. 32-49
Author(s):  
GRACE OLUWASANYA ◽  
ADEBAYO SADIQ
Keyword(s):  
Water Quality ◽  
Groundwater Quality ◽  
Anthropogenic Activities ◽  
Temporal Variations ◽  
Quality Data ◽  
Spatial And Temporal Variation ◽  
Ogun State ◽  
Water Quality Status ◽  
The City ◽  
Quality Status

The quest for safe drinking-water is very high in the ongoing period of environmental pollution. Generally, anthropogenic activities resulting from increasing population and urbanization are major sources of pollution to groundwater. This paper assesses the variation in groundwater distribution in Abeokuta city, Ogun State, Nigeria to determine the water quality status. Secondary groundwater quality data across a period of fifteen years (2001 – 2015) were retrieved from the database of the Department of Water Resources Management and Agro-meteorology, Federal University of Agriculture, Abeokuta, Nigeria to establish the status and examine the spatial and temporal variation. The data was subjected to statistical and geo-statistical analysis. Results showed that temperature, pH and electrical conductivity have a dominant range of 28.0 – 29.9 ºC, 7.01 – 7.50 and 201 – 600 µS/cm, respectively. The major cations Ca2+, Mg2+, Na+ and K+ have respective dominant concentration range from below detection limit (bdl) – 80mg/L, bdl – 30mg/L, 11 – 20 mg/L and bdl – 10 mg/L, while the major anions Cl-, HCO3-, NO3- and SO42- have respective dominant concentration range of 11 – 30, 101 – 200, 1.60 – 4.00 and bdl – 10 mg/L. High (> 1000 µS/cm) conductivity values are detected in parts of the city, which may be due to high concentrations of magnesium, calcium, potassium, chloride and bicarbonate. Only few parts (5.7%) of the city have poor water quality status, while groundwater quality in about 45.7% and 48.6 % of the city may be classified as good and excellent water quality, respectively. The spatial trend showed that groundwater in the core townships of Abeokuta such as Itoku and the environs should not be encouraged for direct consumption without prior treatment. But generally, the groundwater in most part of Abeokuta metropolis is safe for domestic use, though requires some form of household treatment before drinking.    

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