Application to a large-scale drinking water network of robust MPC for tracking periodic references

2016 ◽  
Author(s):  
M. Pereira ◽  
D. Munoz de la Pena ◽  
D. Limon ◽  
I. Alvarado ◽  
T. Alamo
Keyword(s):  
Drinking Water ◽  
Large Scale ◽  
Water Network

Tools to monitor corrosion of cement-containing water mains

2004 ◽  
Vol 49 (2) ◽  
pp. 33-39 ◽  
Author(s):  
P.G.G. Slaats ◽  
G.A.M. Mesman ◽  
L.P.M. Rosenthal ◽  
H. Brink
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Large Scale ◽  
Water Network ◽  
Asbestos Cement ◽  
Water Mains ◽  
Water Companies ◽  
Pipe Replacement ◽  
Non Destructive ◽  
Insight Into

Approximately 40,000 km of the drinking water network in The Netherlands consists of asbestos cement water pipes. The number of fractures in these pipes has increased greatly in recent years. This is due to corrosion of the asbestos cement (AC) which affects the condition of the pipe. Every time a fracture occurs, the question is raised of whether the pipe in question has to be replaced or repaired. A relatively simple destructive technique and non-destructive tests are used on a large scale to assess the condition of the AC pipes in use. Not only is corrosion detrimental to the pipes themselves, it also influences the water quality. Corrosion of the inner walls of cement-containing pipes involves the leaching of hydroxides. This causes pH changes resulting in scaling in water mains and domestic installations. Monitoring techniques have been developed to determine the effects of leaching on water quality. The large-scale use of the relatively simple techniques at water companies increases insight into the condition of the drinking water network, the life expectancy of the pipes and the effects of corrosion on the water quality. Applying these techniques enables those involved to make decisions on pipe replacement and to provide solutions for reducing the effects of leaching.

scholarly journals Modular Feedback Control of Networked Systems by Clustering: A Drinking Water Network Case Study

Processes ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 389 ◽  
Author(s):  
José María Maestre ◽  
Francisco Lopez-Rodriguez ◽  
Francisco Javier Muros ◽  
Carlos Ocampo-Martinez
Keyword(s):  
Drinking Water ◽  
Feedback Control ◽  
Large Scale ◽  
Control Strategies ◽  
System Stability ◽  
Linear Matrix ◽  
Water Network ◽  
Common Lyapunov Function ◽  
Network Topologies

This article presents a method based on linear matrix inequalities (LMIs) for designing a modular feedback control law, whose synthesis guarantees the system stability, while switching to different network topologies. Such stability is achieved by means of a common Lyapunov function to all network admissible configurations. Several mechanisms to relieve the computational burden of this methodology in large-scale systems are also presented. To assess its applicability, the modular controller is tested on a real case study, namely the Barcelona drinking water network (DWN), and its performance is compared with that of other control strategies, showing the effectiveness of the proposed approach.

scholarly journals Hydrochemical Characterisation of High-Fluoride Groundwater and Development of a Conceptual Groundwater Flow Model Using a Combined Hydrogeological and Hydrochemical Approach on an Active Volcano: Mount Meru, Northern Tanzania

Water ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2159
Author(s):  
George Bennett ◽  
Jill Van Reybrouck ◽  
Ceven Shemsanga ◽  
Mary Kisaka ◽  
Ines Tomašek ◽  
...  
Keyword(s):  
Drinking Water ◽  
Large Scale ◽  
Active Volcano ◽  
Aquifer System ◽  
Groundwater Samples ◽  
Northern Tanzania ◽  
Different Seasons ◽  
High Fluoride ◽  
Arusha National Park ◽  
The Impact

This study characterises high-fluoride groundwater in the aquifer system on the flanks of Mount Meru, focusing on parts of the flanks that were only partially or not at all covered by previous research. Additionally, we analyse the impact of rainwater recharge on groundwater chemistry by monitoring spring discharges during water sampling. The results show that the main groundwater type in the study area is NaHCO3 alkaline groundwater (average pH = 7.8). High F− values were recorded: in 175 groundwater samples, the concentrations range from 0.15 to 301 mg/L (mean: 21.89 mg/L, median: 9.67 mg/L), with 91% of the samples containing F− values above the WHO health-based guideline for drinking water (1.5 mg/L), whereas 39% of the samples have Na+ concentrations above the WHO taste-based guideline of 200 mg/L. The temporal variability in F− concentrations between different seasons is due to the impact of the local groundwater recharge. We recommend that a detailed ecohydrological study should be carried out for the low-fluoride springs from the high-altitude recharge areas on the eastern and northwestern flanks of Mount Meru inside Arusha National Park. These springs are extracted for drinking purposes. An ecohydrological study is required for the management of these springs and their potential enhanced exploitation to ensure the sustainability of this water extraction practice. Another strategy for obtaining safe drinking water could be to use a large-scale filtering system to remove F− from the groundwater.

scholarly journals Multi-Country Scale Assessment of Available Energy Recovery Potential Using Micro-Hydropower in Drinking, Pressurised Irrigation and Wastewater Networks, Covering Part of the EU

Water ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 899
Author(s):  
Djordje Mitrovic ◽  
Miguel Crespo Chacón ◽  
Aida Mérida García ◽  
Jorge García Morillo ◽  
Juan Antonio Rodríguez Diaz ◽  
...  
Keyword(s):  
Drinking Water ◽  
Northern Ireland ◽  
Energy Recovery ◽  
Large Scale ◽  
Significant Proportion ◽  
Value Added ◽  
Cost Effective ◽  
Net Energy ◽  
Water Networks ◽  
Scale Assessment

Studies have shown micro-hydropower (MHP) opportunities for energy recovery and CO2 reductions in the water sector. This paper conducts a large-scale assessment of this potential using a dataset amassed across six EU countries (Ireland, Northern Ireland, Scotland, Wales, Spain, and Portugal) for the drinking water, irrigation, and wastewater sectors. Extrapolating the collected data, the total annual MHP potential was estimated between 482.3 and 821.6 GWh, depending on the assumptions, divided among Ireland (15.5–32.2 GWh), Scotland (17.8–139.7 GWh), Northern Ireland (5.9–8.2 GWh), Wales (10.2–8.1 GWh), Spain (375.3–539.9 GWh), and Portugal (57.6–93.5 GWh) and distributed across the drinking water (43–67%), irrigation (51–30%), and wastewater (6–3%) sectors. The findings demonstrated reductions in energy consumption in water networks between 1.7 and 13.0%. Forty-five percent of the energy estimated from the analysed sites was associated with just 3% of their number, having a power output capacity >15 kW. This demonstrated that a significant proportion of energy could be exploited at a small number of sites, with a valuable contribution to net energy efficiency gains and CO2 emission reductions. This also demonstrates cost-effective, value-added, multi-country benefits to policy makers, establishing the case to incentivise MHP in water networks to help achieve the desired CO2 emissions reductions targets.

scholarly journals Evaluation the water quality of the potable water network in Al-Shuala/ Baghdad City

2019 ◽  
Vol 13 (28) ◽  
pp. 116-124
Author(s):  
Zainab Bahaa Mohammed
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Drinking Water ◽  
Quality Index ◽  
Potable Water ◽  
Total Hardness ◽  
Water Network ◽  
Conductivity Water ◽  
Total Dissolved Solid

In this research, the water quality of the potable water network inAl-Shuala Baghdad city were evaluated and compare them with theIraqi standards (IQS) for drinking water and World HealthOrganization standards (WHO), then water quality index (WQI) werecalculator: pH, heavy metals (lead, cadmium and iron), chlorides,total hardness, turbidity, dissolved oxygen, total dissolved solid andelectrical conductivity. Water samples are collected weekly duringthe period from February 2015 to April 2015 from ten sites. Resultsshow that the chlorides, total dissolved solid and electricalconductivity less than acceptable limit of standards, but totalhardness and heavy metals in some samples higher than acceptablelimit of standards while the other parameter is good.WQI shows thatresults is excellent and good for drinking for all location and monthsexcept site (2) gave higher value (65.184) in March and site (9) gavehigh value (57.78, 57.23) at March and April indicate that sites ispoor for drinking water.

Dynamics of bacterial communities before and after distribution in a full-scale drinking water network

2015 ◽  
Vol 74 ◽  
pp. 180-190 ◽  
Author(s):  
Joline El-Chakhtoura ◽  
Emmanuelle Prest ◽  
Pascal Saikaly ◽  
Mark van Loosdrecht ◽  
Frederik Hammes ◽  
...  
Keyword(s):  
Drinking Water ◽  
Bacterial Communities ◽  
Full Scale ◽  
Water Network ◽  
Before And After

First Evidence of Amoebae–Mycobacteria Association in Drinking Water Network

2014 ◽  
Vol 48 (20) ◽  
pp. 11872-11882 ◽  
Author(s):  
Vincent Delafont ◽  
Faïza Mougari ◽  
Emmanuelle Cambau ◽  
Michel Joyeux ◽  
Didier Bouchon ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Network

Medicines at Standing Rock: Stories of Native Healing through Survivance

2020 ◽  
Vol 44 (4) ◽  
pp. 59-78
Author(s):  
Selma Hedlund
Keyword(s):  
Drinking Water ◽  
Collective Action ◽  
North Dakota ◽  
Social Movement ◽  
Indigenous Peoples ◽  
Large Scale ◽  
Theoretical Framework ◽  
Indian Country ◽  
Indigenous Lands ◽  
Clean Drinking Water

In 2016, a historically large gathering of Indigenous peoples, tribal nations, and allies took place at the Standing Rock reservation, North Dakota, in response to the proposed construction of the Dakota Access Pipeline (DAPL). Under the assertion of Mni Wičoni (Water Is Life), a social movement emerged with the purpose of protecting clean drinking water and Indigenous lands. Drawing on Gerald Vizenor’s theoretical framework that emphasizes storytelling and active presence over settler resistance, this study argues that Indigenous water protectors’ collective action in the movement, as well as their stories and remembrance of Standing Rock, are acts of survivance, in which they are able to denounce othering and challenge the colonizer’s gaze. While water is often described as a first medicine by Indigenous peoples, the water protectors’ stories in this essay suggest that the movement itself represented another remedy as well. Specifically, this movement represents a pivotal moment of cultural revitalization and community across what participants refer to as “Indian country,” in which individuals are able to engage in large scale grassroots decolonizing praxis rooted in spirituality and ceremony, and suspend genocidal traps of victimry that they have long battled.

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