Wszystkie pola: wastewater management - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Sustainable management of wastewater: Theoretical design of combined upflow anaerobic reactors and artificial wetlands systems
Autorzy:: Guardia-Puebla, Yans
Llanes-Cedeño, Edilberto
Rodríguez-Pérez, Suyén
Arias-Cedeño, Quirino
Sánchez-Girón, Victor
Morscheck, Gert
Eichler-Löbermann, Bettina
Powiązania:: https://bibliotekanauki.pl/articles/1844389.pdf
Data publikacji:: 2020
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: anaerobic digestion
artificial wetlands
design methodology
fruit and vegetable wastewater
upflow anaerobic reactors
UASB
wastewater
Opis:: Anaerobic digestion (AD) is an adequate alternative to treat wastewater generated from fruit and vegetable processing (FVWW); likewise, in recent years, artificial wetlands (AWs) have been applied as a post-treatment process for anaerobically pre-treated wastewater. The objective of this work was to design a sustainable treatment system for FVWW composed of upflow anaerobic reactors (UASB) with phase separation and an AW system that receive the anaerobically pretreated effluent. Using the design methodologies for the UASB reactors and artificial wetlands with sub-surface flow (AW-SSF), the parameters of the combined AD-AW system that treat a wastewater flow of 300 m3∙d–1 were calculated. The UASB acidogenic system was adjusted to a hydraulic retention time (HRT) of 10 h and organic loading rate (OLR) of 13.84 kg COD m–3∙d–1; meanwhile, the methanogenic and cascade UASB reactors with OLRs of 10.0 and 3.0 kg COD m3∙d–1, and HRTs of 11 and 10 h, respectively, achieve a high COD removal efficiency (above 94%), and an overall biogas production rate of 1.53 m3 of biogas per m3 of reactor capacity per day. According to the results obtained with the theoretical design, anaerobic-wetland combined system achieves an overall efficiency greater than 98%. The wastewater treated by the proposed system will allow the reuse of 30% of the water used in the washing of fruits and vegetables.
Źródło:: Journal of Water and Land Development; 2020, 47; 66-76
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Dynamic simulation for wastewater treatment plants management: Case of Souk-Ahras region, north-eastern Algeria
Dynamiczna symulacja zarządzania oczyszczalniami ścieków: przykład regionu Souk-Ahras w północno-wschodniej Algierii
Autorzy:: Sabri, D.
Yassine, D.
Yahia, H.
Dounia, M.
Powiązania:: https://bibliotekanauki.pl/articles/292322.pdf
Data publikacji:: 2017
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: activated sludge
Algeria
ASM1
simulation
wastewater
Algieria
model ASM1
osad czynny
symulacja
ścieki
Opis:: Treatment performances of two wastewater treatment plants (WWTPs), located in North-Eastern Algeria (Souk-Ahras and Sedrata) were tested using ASM1 model. The model, to be considered as a decision tool for the appropriate management of activated sludge systems, served for the prediction of both WWTP behaviours under different operating conditions. In Sedrata WWTP the first management scenarios is based on an increase of inflow rate, taking into account a new transfer volume from a nearby zone. In a second scenerio, the ultimate flow of 40 000 m³∙d^–1 is estimated. Regarding Souk-Ahras WWTP, three scenarios were tested. The first tested the impact of an increase of the extraction flow rate and yielded a reduction by 37% of sludge production. The second dealt with the management of the mass budget of substrata and biomass. Finally, the third application was devoted to the estimation of the plant ultimate capacity, estimated to be 60 000 m³∙d^–1.
Stosując model ASM1, testowano działanie dwóch oczyszczalni ścieków zlokalizowanych w północnowschodniej Algierii w miejscowościach Souk-Ahras i Sedrata. Model, traktowany jako narzędzie w podejmowaniu decyzji co do właściwego zarządzania systemem osadu czynnego, służył przewidywaniu zachowania się obu oczyszczalni w różnych warunkach operacyjnych. W oczyszczalni Sedrata w pierwszym scenariuszu zarządzania założono zwiększoną prędkość przepływu uwzględniającą dodatkową objętość ścieków dostarczaną z pobliskiej strefy. W drugim oszacowano końcową przepustowość równą 40 000 m³∙d^–1. W odniesieniu do oczyszczalni w Souk-Ahras testowano trzy scenariusze. W pierwszym rozpatrywano wpływ zwiększonej prędkości przepływu, w efekcie uzyskano 37-procentowe zmniejszenie produkcji osadu. Drugi scenariusz dotyczył zarządzania bilansem masy podłoża i biomasy. Trzeci z kolej polegał na ocenie docelowej przepustowości ścieków szacowanej na 60 000 m³∙d^–1.
Źródło:: Journal of Water and Land Development; 2017, 34; 221-231
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Sustainable sewage sludge management in Morocco: Constraints and solutions
Autorzy:: Ghacha, Abdessamad
Ben Allal, Laila
Ammari, Mohammed
Powiązania:: https://bibliotekanauki.pl/articles/293242.pdf
Data publikacji:: 2020
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: disposal
recovery
sewage sludge
sustainable management
wastewater
wastewater treatment plant
Opis:: The remarkable development of sanitation in Morocco has inevitably led to the production of sludge generated from wastewater treatment plants in increasing quantities. Consequently, the problem of sludge management becomes persistent and worrying. The aim of this paper was to contribute to the study of sewage sludge management issue in Morocco by identifying the various constraints hampering the sustainable disposal and/or recovery of municipal sewage sludge and drawing up recommendations for the decision-makers. Moreover, in the context of improving by learning from best practices and seeking common solutions regarding this problematic, benchmarking with other countries has been conducted as well. To carry out this study, a methodological approach was defined based on bibliographic research, surveys, interviews and benchmarking. The constraints hampering the sustainable management of sludge are numerous and complex, they have not been technical and environmental but also a regulatory, institutional-organizational and economic-financial nature yet. Therefore, municipalities, government and academia ideally would be encouraged to participate in the decision-making process regarding the management of sewage sludge. Technical solutions, when coupled with stakeholder participation, can lead to policy implementation with a higher chance of improving the present situation. In the case of Morocco, when comparing with others sludge recovery and disposal routes, land application (reuse in agriculture, silviculture and rehabilitation of degraded soils) remains the most environmentally friendly option, as well as a sustainable and economically viable solution.
Źródło:: Journal of Water and Land Development; 2020, 46; 71-83
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Management model for water demand using the WEAP tool: Case of Setif Province – Algerian highlands
Autorzy:: Bouznad, Imad E.
Elahcene, Omar
Belksier, Mohamed S.
Powiązania:: https://bibliotekanauki.pl/articles/292880.pdf
Data publikacji:: 2020
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: different scenarios
unmet demand
wastewater
water
water evaluation and planning (WEAP)
Opis:: The pressure on the use of water and climate change has caused a decreased availability of water resources in semi-arid areas in the last decades. The Setif Province is one of the semi-arid zones of Algeria as it receives an average less than 400 mm∙year^–1. The question of the evolution of demographic pressures and their impacts on water resources arise. By applying WEAP software (water evaluation and planning), the aim is to develop a model of water resources management and its utilization, assess the proportion of the resource-needs balance and analyse the future situation of water according to different scenarios. This approach allows to identify the most vulnerable sites to climatic and anthropogenic pressures. The estimation of the needs for drinking water and wastewater in the Setif Province has shown that these needs increase over time and happening when the offer is not able to cover the demand in a suitable way. It is acknowledged that there is a poor exploitation of water resources including underground resources, which translates into unmet demand in all sites of demand.
Źródło:: Journal of Water and Land Development; 2020, 45; 19-28
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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