Guidelines for the management of assets of water supply and wastewater systems

2019 ◽  
Keyword(s):  
Water Supply ◽  
Wastewater Systems

scholarly journals Screening Tool for Energy Evaluation of Projects: A Reference Guide for Assessing Water Supply and Wastewater Treatment Systems

2021 ◽  
Keyword(s):  
Wastewater Treatment ◽  
Water Supply ◽  
Energy Use ◽  
Screening Tool ◽  
Water And Wastewater Treatment ◽  
Reference Guide ◽  
Energy Evaluation ◽  
Wastewater Systems ◽  
Use Efficiency ◽  
Wastewater Treatment Systems

The Screening Tool for Energy Evaluation of Projects (STEEP) is designed to help improve energy use efficiency in water and wastewater treatment systems. This publication provides a detailed overview of STEEP and guides users on how to apply it during energy use assessments of proposed or existing water supply and wastewater systems. Since 2017, STEEP has been under continuous development based on pilot assessments carried out in various projects financed by the Asian Development Bank. STEEP is available online and can be downloaded for free.

Aqueducts in the Hellenic area during the Roman period

2007 ◽  
Vol 7 (1) ◽  
pp. 139-145
Author(s):  
E. Mavromati ◽  
L. Chryssaidis
Keyword(s):  
Roman Empire ◽  
Water Supply ◽  
Natural Resources ◽  
Urban Landscape ◽  
Living Conditions ◽  
Roman Period ◽  
Construction Techniques ◽  
Wastewater Systems ◽  
Materials Used ◽  
Archaeological Excavations

Since their very beginnings, organized societies have been concerned with the preservation and improvement of their environment and natural resources as these were the basis of their wellbeing and survival. In pursuing this goal, many civilizations have constructed admirable technical and infrastructural works. To most of us, however, the society that stands out for its particular preoccupation and special widespread achievements in this field is the Roman Empire which actively demonstrated great interest for its cities and the providing for their everyday basic livelihood needs. The creation of most urban centres was combined with the construction of aqueducts, water supply and wastewater systems. During the Roman occupation period (200 BC–300 AD) of the Hellenic world, many cities within the region expanded and new urban centres were created. Substantial steps were taken to upgrade the urban landscape and to improve their living conditions. This was connected with water supply and wastewater systems, comprising aqueducts, water towers and underground pipe systems. The investigation of the criteria that determined engineers' design choices for aqueducts, methods and processes of construction, techniques and materials used - as these are revealed through the archaeological excavations and relics - testify to the environmental approach and the maintenance perception of the Roman period.

Performance assessment of water supply and wastewater systems

2004 ◽  
Vol 1 (1) ◽  
pp. 55-67 ◽  
Author(s):  
Maria Cardoso ◽  
Sérgio Coelho ◽  
Rafaela Matos ◽  
Helena Alegre
Keyword(s):  
Water Supply ◽  
Performance Assessment ◽  
Wastewater Systems

scholarly journals WaterMet2: a tool for integrated analysis of sustainability-based performance of urban water systems

2014 ◽  
Vol 7 (1) ◽  
pp. 1-26 ◽  
Author(s):  
K. Behzadian ◽  
Z. Kapelan ◽  
G. Venkatesh ◽  
H. Brattebø ◽  
S. Sægrov
Keyword(s):  
Water Supply ◽  
Water System ◽  
Planning Horizon ◽  
Intervention Strategies ◽  
Integrated Analysis ◽  
Urban Water ◽  
Time Step ◽  
Urban Water System ◽  
Wastewater Systems ◽  
Step Over

Abstract. This paper presents the new "WaterMet2" model for long-term assessment of urban water system (UWS) performance which will be used for strategic planning of the integrated UWS. WaterMet2 quantifies the principal water-related flows and other metabolism-based fluxes in the UWS such as materials, chemicals, energy, greenhouse gas emissions. The suggested model is demonstrated through sustainability-based assessment of an integrated UWS of Oslo city for daily time step over a 30 yr planning horizon. The integrated UWS modelled by WaterMet2 includes both water supply and wastewater systems. Given a fast population growth, WaterMet2 calculates six quantitative sustainability-based indicators of the UWS. The result of the water supply reliability (94%) shows the need for appropriate intervention options over the planning horizon. Five intervention strategies are analysed in WaterMet2 and their quantified performance are compared with respect to the criteria. Multi-criteria decision analysis is then used to rank the intervention strategies based on different weights from the involved stakeholders' perspectives. The results demonstrate the best and robust strategies are those which improve the performance of both water supply and wastewater systems.

scholarly journals Consumption of Electrical Energy in Water Supply and Wastewater Systems in Brazil

2018 ◽  
Vol 1 (1) ◽  
pp. 51
Author(s):  
Renan Barroso Soares ◽  
Ricardo Franci Gonçalves
Keyword(s):  
Energy Consumption ◽  
Water Supply ◽  
Energy Use ◽  
Current System ◽  
Electrical Energy ◽  
Anthropogenic Sources ◽  
Water Abstraction ◽  
Treated Sewage ◽  
Wastewater Systems ◽  
Government Websites

<p><em>Traditional processes adopted in water supply and wastewater systems consume large amounts of energy and generate relevant environmental impacts, since energy use is considered one of the largest anthropogenic sources of greenhouse gases. The industry consumes 7% of all energy produced in the world, increasing the costs of operations that cannot be fully passed on to users, especially in developing countries such as Brazil. The worldwide projection of rising electricity prices further aggravates the situation, motivating a mapping of the energy efficiency of the sector in order to identify points of improvement. Several articles on the topic have already been published, but information for Brazil is scarce. This paper presents a review on the energy consumption in each stage of the water and wastewater sector, including the Brazilian scenario. Searches on the site www.sciencedirect.com, using as keywords wastewater, water, energy, consumption and Brazil and government websites resulted in 20 documents that compose this work. The objective of this work was to review the energy consumption in collective water supply and wastewater systems, from raw water abstraction to the final disposal of the treated sewage, by compiling information and adding data on the Brazilian scenario. In general, the current system is inefficient and require political integration in water and energy in order to overcome the challenges.</em></p>

scholarly journals Trend Analysis of Total Affected Water and Total Discharged Wastewater of Nišava District (Serbia)

2020 ◽  
Vol 8 (E) ◽  
pp. 127-132 ◽  
Author(s):  
Nina Pavićević
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Trend Analysis ◽  
Natural Resource ◽  
Regression Models ◽  
Supply Network ◽  
Water Supply Network ◽  
Living World ◽  
Basic Substance ◽  
Wastewater Systems

BACKGROUND: Water, as a natural resource, is the most basic substance of life that has immeasurable significance for the living world, ecosystems, and planet Earth. It is consumed by plants, animals, and humans. AIM: We aimed to preform a trend analysis of total affected quantities of water and total discharged wastewater (TDWW) of Nišava district (Serbia). METHODS: In this paper, a trend analysis is given of total affected quantities of water, delivered quantities of drinking water (DQDW), total discharged wastewater (TDWW), wastewater discharges to wastewater systems, and number of households connected to the water supply network of Nišava district (Serbia). RESULTS: The values for Nišava district (Serbia) for total affected quantities of water and DQDW for the period 2006–2018 and wastewater discharges to wastewater systems for the period 2009–2018 decreased, whereas the values for Nišava district (Serbia) for TDWW for the period 2006–2018 and number of households connected to the water supply network for the period 2007–2018 increased. The paper also provides regression models for approximation DQDW (eq. 1) and TDWW (eq. 2) for Nišava district (Serbia) for the period 2006–2018. CONCLUSION: Values for total affected quantities of water (×103 m³) for Nišava district (Serbia) for the period 2006–2018, they decreased from 41740 in 2006 to 9931 in 2018.

SISAR: a sustainable management model for small rural decentralized water and wastewater systems in developing countries

2012 ◽  
Vol 2 (4) ◽  
pp. 291-300 ◽  
Author(s):  
Alejandro Meleg
Keyword(s):  
Water Supply ◽  
State Government ◽  
Financial Sustainability ◽  
Wastewater Systems ◽  
User Groups ◽  
Regional Basis ◽  
Water And Wastewater ◽  
Adequate Provision ◽  
International Financing ◽  
Local User

Investments for basic rural sanitation programs should not only focus on the construction of new installations, but also on the necessity of implementing proper management models that guarantee the operational and financial sustainability of the investments. The integrated rural sanitation system (SISAR) is based on the idea of creating a confederation of local user groups which come together on a regional basis, and through an adequate institutional setup, are responsible for managing SISAR and assuring the adequate provision of water supply and in some cases, wastewater services. Financial sustainability is achieved by the implementation of tariffs for water consumption and provision of wastewater services generating revenue which is redistributed among all systems in order to cover all operational, maintenance and administration costs. Important stakeholders in the model include, besides the users, local and state government and international financing institutions responsible for financing the investments in the construction of rural water supply and wastewater systems. This document focuses on the experience and results achieved by SISAR in the Brazilian state of Ceará. In 2001 eight SISARs began providing improved water supply services in 66 settlements. Today, more than 560 settlements (more than 330,000 inhabitants) are supplied by SISARs.

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