scholarly journals Sustainable Water Resources Management in Small Greek Islands under Changing Climate

Water ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1694
Author(s):  
Ioannis M. Kourtis ◽  
Konstantinos G. Kotsifakis ◽  
Elissavet G. Feloni ◽  
Evangelos A. Baltas
Keyword(s):  
Water Supply ◽  
Life Cycle Cost ◽  
Water Resource Management ◽  
Rainwater Harvesting ◽  
Optimal Solution ◽  
Aegean Sea ◽  
Management Scenarios ◽  
Sustainable Water Resources Management ◽  
Harvesting Systems ◽  
Alternative Water

Five different water resource management scenarios are examined on eight dry islands of the Aegean Sea in Greece, pitting the current practice of water hauling via ship against alternative water supply schemes in delivering a sustainable solution for meeting water demand. The first scenario employs current water supply practices along with the operation of domestic rainwater harvesting systems. Desalinated water, provided through the operation of wind-powered desalination plants, is considered the main source of potable water in the rest of scenarios. Wind-powered desalination may be combined with rainwater harvesting as a supplementary source of water and/or seawater pumping and an additional source of energy that is supplied to the system. All different alternatives are evaluated for a 30-year lifespan, and an optimal solution is proposed for each island, based on a life cycle cost (LCC) analysis. The performance of this solution is then assessed under six climate change (CC) scenarios in terms of the rate of on-grid versus off-grid renewable energy that is required in order to achieve a certain reliability level. Overall, the examined scenarios show a decreasing performance in terms of reliability under CC for the eight islands.

scholarly journals A Critical Evaluation of the Water Supply and Stormwater Management Performance of Retrofittable Domestic Rainwater Harvesting Systems

Water ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 1184 ◽  
Author(s):  
Ruth Quinn ◽  
Peter Melville-Shreeve ◽  
David Butler ◽  
Virginia Stovin
Keyword(s):  
Climate Change ◽  
Water Supply ◽  
Stormwater Management ◽  
Rainwater Harvesting ◽  
Critical Evaluation ◽  
Water Source ◽  
Management Tool ◽  
Retention Capacity ◽  
Harvesting Systems ◽  
Alternative Water

Rainwater harvesting systems are often used as both an alternative water source and a stormwater management tool. Many studies have focused on the water-saving potential of these systems, but research into aspects that impact stormwater retention—such as demand patterns and climate change—is lacking. This paper investigates the short-term impact of demand on both water supply and stormwater management and examines future and potential performance over a longer time scale using climate change projections. To achieve this, data was collected from domestic rainwater harvesting systems in Broadhempston, UK, and used to create a yield-after-spillage model. The validation process showed that using constant demand as opposed to monitored data had little impact on accuracy. With regards to stormwater management, it was found that monitored households did not use all the non-potable available water, and that increasing their demand for this was the most effective way of increasing retention capacity based on the modelling study completed. Installing passive or active runoff control did not markedly improve performance. Passive systems reduced the outflow to greenfield runoff for the longest time, whereas active systems increased the outflow to a level substantially above roof runoff in the 30 largest events.

scholarly journals An Assessment of Water Sourcing Technologies and Stakeholder Stratagems Applied in the Balikumbat Highland Community of Ndop Plain, Cameroon

2020 ◽  
pp. 35-45
Author(s):  
Sabastian Ande Billa ◽  
Zephania Nji Fogwe
Keyword(s):  
Water Supply ◽  
Water Resource Management ◽  
Stakeholder Involvement ◽  
Water Sources ◽  
Water Harvesting ◽  
Participation Rates ◽  
Water Demands ◽  
Harvesting Systems ◽  
Alternative Water ◽  
Alternative Water Sources

When a bourgeoning population faces water supply scarcity dilemma, stakeholders and interests emerge to offer multivariate water harvesting systems to affected communities. Stakeholder provision of water resources have deployed varied indigenous and exogenous technologies for domestic uses from natural surface to ground water stores. Community technological prowess and stratagems are functions of relief and climatic traits within a socio-political setting and that is why this paper sets out to assess indigenous and exogenous technologies of stakeholder in community water harvesting systems. Qualitative and quantitative data were collected for water sources, water demands, stakeholders, harvesting systems, technologies of extraction and water management through field observations, questionnaires and interviews. Findings revealed that few inhabitants have exogenous water supply technology and greater proportions depend on low technologies which paradoxically proved to be more sustainable than the high technologies. Stakeholder involvement motifs self-pride and politically driven and so the dearth of village water committees accounting for very derisory participation rates in water sourcing and management. The development and rehabilitation of alternative water sources is vital for sustainable water resource management and not just reliance on technological knowhow in Balikumbat.

PERENCANAAN PEMANFAATAN SISTEM PEMANENAN AIR HUJAN (PAH) DALAM MENDUKUNG PENERAPAN ECODRAIN DI KAMPUS B UNIVERSITAS NEGERI JAKARTA

2021 ◽  
Vol 16 (1) ◽  
pp. 18-25
Author(s):  
Fauziah Ismahyanti ◽  
Rosmawita Saleh ◽  
Arris Maulana
Keyword(s):  
Water Balance ◽  
Water Supply ◽  
Rainwater Harvesting ◽  
Water System ◽  
Water Source ◽  
Office Building ◽  
Water Volume ◽  
Water Balance Method ◽  
Rainwater Runoff ◽  
Alternative Water

This research is done to plan rainwater harvesting so that it can be used as an alternative water source on the campus B UNJ so it is expected to reduce groundwater use that can cause a puddle. The method used in the PAH development plan is a water balance method. This method compares the level of demand with water volume that can be accommodated or the availability of water (supply). Based on the results of the analysis, it was found that the potential for rainwater in the FIO office building A was 1773.95 m3 , FMIPA building B was 1904.62 m3 , the FIO lecture building C was 1613.21 m3 and the Ulul Albab mosque was 512.16 m3 . Potential rainwater obtained cistern PAH capacity of 200 m3 by saving water needs by 30% in building A FIO, building B FMIPA, and building C FIO. The capacity of the PAH cistern is 80 m3 by saving the water needs of the Ulul Albab mosque by 13.3%. Placement of the PAH cistern under the ground with a ground water system. Ecodrainage application by utilizing the PAH system can reduce drainage load by 0.158 m3 /second or 13.9% from rainwater runoff.

scholarly journals Rainwater harvesting and greywater recycling as alternative water resources: a survey of public opinion

2018 ◽  
Vol 45 ◽  
pp. 00090 ◽  
Author(s):  
Agnieszka Stec
Keyword(s):  
Public Opinion ◽  
Water Resources ◽  
Water Supply ◽  
Rainwater Harvesting ◽  
Water Research ◽  
Recycling System ◽  
Alternative Water ◽  
Alternative Sources

This paper reports results from a survey of households in Poland concerning the use of alternative sources of water. Research showed that respondents were not too inclined to replace water from the water supply with greywater and rainwater. They would be afraid of using both greywater (79%) and rainwater (60%) in their household. The biggest concern was the use of alternative sources of water for doing laundry - more than 50% of respondents identified this issue in both cases. Only 43% of respondents would like to install a greywater recycling system and much more -78% a rainwater harvesting system. For the vast majority of respondents (80%) a subsidy would be an incentive for using these systems in their household.

scholarly journals Cost analysis of a rainwater harvesting system in Poland

2018 ◽  
Vol 45 ◽  
pp. 00078
Author(s):  
Grażyna Sakson
Keyword(s):  
Cost Analysis ◽  
Potable Water ◽  
Rainwater Harvesting ◽  
Annual Rainfall ◽  
Single Family ◽  
Construction Costs ◽  
Sewer System ◽  
Harvesting Systems ◽  
Alternative Water ◽  
The Cost

Rainwater harvesting is an alternative water supply method that has become popular in recent years around the world. This is mainly due to financial reasons (reducing the cost of potable water and fees for rainwater discharge to the sewerage), but also because of environmental awareness. In Poland, rainwater harvesting systems are not often used because of their low financial viability determined by high system construction costs and the low prices of potable water. Earlier analysis conducted by the author showed that the payback period of investment outlays was from a dozen or so years for large buildings, to a few dozen for single-family houses. This situation may change after the introduction of common fees for discharging rainwater from impervious areas into sewerage, and fees for the reduction of natural retention on newly built-up areas, in accordance with new water regulations. This paper presents a cost analysis of rainwater harvesting systems for ten cities in Poland, with varying annual rainfall depth and various pricing for potable water. Analyses were carried out for a single-family house located in an area equipped with a municipal sewer system, and for a large building, located in an area equipped and not equipped with a municipal sewer system.

The Application of Rain Water Harvesting Method on a Low Income Flat in Cengkareng, Jakarta

2015 ◽  
Vol 747 ◽  
pp. 317-320 ◽  
Author(s):  
Yosica Mariana ◽  
Junius Ngadinata ◽  
Renhata Katili ◽  
Religiana Hendarti
Keyword(s):  
Water Supply ◽  
Low Income ◽  
Rainwater Harvesting ◽  
Rapid Development ◽  
Rain Water ◽  
Capital City ◽  
Water Harvesting ◽  
Rain Water Harvesting ◽  
Harvesting Method ◽  
Alternative Water

This paper presents a study of the application of the theory of rainwater harvesting for a low income flat in West Jakarta. The background of this study is that Jakarta as a capital city of Indonesia is actually experiencing water crisis because of the rapid population growth and the building construction. This rapid development in consequence affects a reduction on the ground water supply. Therefore, this study analyse the amount of rain water that can be an alternative water supply particularly for a low income flat. This study focused on the water supply for the flushing toilet. To accommodate that objective, a brief calculation of water catchment area and the amount of water that can be harvested has been conducted. The results showed that in general the water supplied by the rain water harvesting can provided 100% annually, but since the precipitation in August is relatively low, in consequence, the water suply should be provided by the local government water company (PDAM).

Roof rainwater harvesting systems for household water supply in Jordan

Desalination ◽  
2009 ◽  
Vol 243 (1-3) ◽  
pp. 195-207 ◽  
Author(s):  
Fayez A. Abdulla ◽  
A.W. Al-Shareef
Keyword(s):  
Water Supply ◽  
Rainwater Harvesting ◽  
Household Water ◽  
Harvesting Systems

Drinking Water Supply Options in Arsenic and Salinity Affected Areas of Bangladesh: A Case Study

2021 ◽  
Vol 12 (1-2) ◽  
pp. 215-223
Author(s):  
MA Rahman ◽  
MA Ali ◽  
T Ahmed ◽  
ME Habib ◽  
MS Hossain
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Rainwater Harvesting ◽  
Service Providers ◽  
Iron Chloride ◽  
Drinking Water Supply ◽  
Aquifer Recharge ◽  
High Concentration ◽  
Groundwater Arsenic ◽  
Harvesting Systems

Widespread groundwater arsenic contamination in south, south-western and north-eastern regions and high salinity in the south-western coastal region are the two major challenges for drinking water supply in Bangladesh. In this study, we assessed various water supply technologies used for mitigating arsenic and salinity in Laksam of Cumilla and Assasuni of Satkhira district. Water samples were analyzed for Arsenic, Iron, Chloride (indicator for salinity) and FC from different water extraction systems (shallow, deep and Tara tubewells), groundwater arsenic treatment units (SIDKO and READ-F), rainwater harvesting systems (RWH), pond sand filters (PSF), and managed aquifer recharge units. Most shallow tubewells, both in Laksam and Assasuni, have been found to produce arsenic contaminated water. But water from deep and Tara tubewells have been found arsenic-free, though high concentration of iron was observed in the wells in Laksam. Rainwater harvesting systems, PSF and MAR units in Assasuni have been found to provide water free from the common chemical contaminants but suffer from high bacterial contamination. Deep tubewell appear to be the most preferred option where a suitable aquifer is available. The community-scale groundwater treatment systems would require strong operation and maintenance support from the service providers to be successful. Environ. Sci. & Natural Resources, 12(1&2): 215-223, 2019

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