Determination of Pollution Loads in Spillways of the Combined Sewage Network of the City of Cuenca, Ecuador

Montalvo-Cedillo, César; Jerves-Cobo, Rubén; Domínguez-Granda, Luis

doi:10.3390/w12092540

Cited by 6 publications

(4 citation statements)

References 38 publications

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“…The sanitation system of Cuenca has around 1300 km (km) of sewerage networks and 80 km of sanitary interceptors that direct the wastewater to the Ucubamba Treatment Plant [27].…”

Section: Study Areamentioning

confidence: 99%

Analysis of the Behavior of Abstractions in Two Urban Micro-Basins of the City of Cuenca (Ecuador), through an Aggregate Model

2021

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Several cities in developing countries are challenging the permanent process of urbanization. This generates a great disturbance on the hydrological response of the urbanized area during rainfall events, which can cause floods. Among the disturbances that urbanized basins may suffer, it is found that variations in rain losses (hydrological abstractions) can be estimated by the named volumetric runoff coefficient (CVOL) methodology. In the present study, this methodology is used in an attempt to estimate the hydrological abstraction of two nearby urbanized basins, with different degrees of impermeability, located in the city of Cuenca in Ecuador. The data for that analysis were collected between April and May of 2017. The results obtained indicate that the micro-basin with the largest impervious area presents the higher initial hydrological losses, the higher rate of decrease in abstractions, and the higher stormwater runoff flows per unit area. In addition, the abstractions found in the two urban micro-basins show great sensitivity to the maximum rainfall intensity and do not relate to the antecedent soil moisture. These results demonstrate the importance of having higher pervious surfaces in urbanized areas because they lead to reduce negative impacts associated with increased stormwater runoff on impervious surfaces.

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“…The sanitation system of Cuenca has around 1300 km (km) of sewerage networks and 80 km of sanitary interceptors that direct the wastewater to the Ucubamba Treatment Plant [27].…”

Section: Study Areamentioning

confidence: 99%

Analysis of the Behavior of Abstractions in Two Urban Micro-Basins of the City of Cuenca (Ecuador), through an Aggregate Model

2021

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“…In 2020, Montalvo-Cedillo et al [ 30 ] highlighted the significance of combined sewer overflow events in the contamination of receiving bodies such as rivers. They analyzed multiple wastewater parameters to evaluate the behavior of three different sewage discharges into a river.…”

Section: Introductionmentioning

confidence: 99%

Multisensor Data Fusion for Localization of Pollution Sources in Wastewater Networks

Chachuła

Słojewski

Nowak

2022

Sensors

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Illegal discharges of pollutants into sewage networks are a growing problem in large European cities. Such events often require restarting wastewater treatment plants, which cost up to a hundred thousand Euros. A system for localization and quantification of pollutants in utility networks could discourage such behavior and indicate a culprit if it happens. We propose an enhanced algorithm for multisensor data fusion for the detection, localization, and quantification of pollutants in wastewater networks. The algorithm processes data from multiple heterogeneous sensors in real-time, producing current estimates of network state and alarms if one or many sensors detect pollutants. Our algorithm models the network as a directed acyclic graph, uses adaptive peak detection, estimates the amount of specific compounds, and tracks the pollutant using a Kalman filter. We performed numerical experiments for several real and artificial sewage networks, and measured the quality of discharge event reconstruction. We report the correctness and performance of our system. We also propose a method to assess the importance of specific sensor locations. The experiments show that the algorithm’s success rate is equal to sensor coverage of the network. Moreover, the median distance between nodes pointed out by the fusion algorithm and nodes where the discharge was introduced equals zero when more than half of the network nodes contain sensors. The system can process around 5000 measurements per second, using 1 MiB of memory per 4600 measurements plus a constant of 97 MiB, and it can process 20 tracks per second, using 1.3 MiB of memory per 100 tracks.

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“…Most countries have experienced the situation of "pollution before treatment" and "first development before protection" during the process of urbanization and industrialization. To solve the water environment problems brought by urban development, studies on water system connectivity and diversion of flowing water [2,3], sewage system quality and efficiency improvement [4,5], river and lake sediment pollution control [6,7], water ecological environment restoration [8,9] have been carried out. Some countries have carried out water environment management projects and achieved relatively significant results, i.e., the Danube River in Vienna, Austria [10], the Seine River [11] and the Rhine River [12] in Paris, France, and the Cheonggyecheon River in Seoul, South Korea [13].…”

Section: Introductionmentioning

confidence: 99%

Systematic Treatment of Water Ecological Environment in Plain River Network City: A Case Study of Jiangyin

Ding

Sun

et al. 2022

Advances in Transdisciplinary Engineering

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Jiangyin is a typical plain river network city in the Yangtze River Delta. The water ecological environment in urban area faces a range of environmental challenges, including poor water quality, black and odorous water bodies, serious isolation of river network, degradation of water ecological environment and low efficiency in urban wastewater treatment. This study proposed a systematic treatment plan which includes source sewage control, river regulation, water cycle enhancement, water environment restoration and waterscape improvement. Such an approach was informed by four principles, which is prioritizing pollutant control, introducing flowing water, co-management of river and bank, and combination of construction and management. By implementing such measures, the water environment carrying capacity and water ecological restoration capacity of the urban area have been greatly improved, and the overall water ecological environment quality has been significantly improved. The urban water system has realized a new picture of smooth river, clear water, green bank and beautiful scenery.

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Determination of Pollution Loads in Spillways of the Combined Sewage Network of the City of Cuenca, Ecuador

Cited by 6 publications

References 38 publications

Analysis of the Behavior of Abstractions in Two Urban Micro-Basins of the City of Cuenca (Ecuador), through an Aggregate Model

Analysis of the Behavior of Abstractions in Two Urban Micro-Basins of the City of Cuenca (Ecuador), through an Aggregate Model

Multisensor Data Fusion for Localization of Pollution Sources in Wastewater Networks

Systematic Treatment of Water Ecological Environment in Plain River Network City: A Case Study of Jiangyin

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