scholarly journals Impact of Rainwater Harvesting on the Drainage System: Case Study of a Condominium of Houses in Curitiba, Southern Brazil

Water ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 1100 ◽  
Author(s):  
Andréa Teston ◽  
Celimar Teixeira ◽  
Enedir Ghisi ◽  
Ernani Cardoso
Keyword(s):  
Water Consumption ◽  
Rainwater Harvesting ◽  
Drainage System ◽  
Daily Rainfall ◽  
Storage Tanks ◽  
Southern Brazil ◽  
Single Family ◽  
Rainwater Tank ◽  
The Impact

The objective of this work is to assess the impact of rainwater use in single-family houses on drinking water consumption and on the urban drainage system by means of a case study of a condominium of houses in the city of Curitiba, southern Brazil. A quantitative evaluation of the rainwater volume used and spilled in the recovery system was carried out using two methods for sizing the rainwater tank capacity. Using daily rainfall data and three demand scenarios of water consumption, it was possible to verify the efficiency and reliability of the adopted systems. Furthermore, in order to verify the impact on drainage, the greatest rainfall in the series was assessed and then it was possible to measure it by comparing the hydrograph peak flows with and without the rainwater harvesting systems in the watershed outfall, corresponding to the storage tanks (concrete boxes) in the condominium. It was concluded that there was a decrease in the peak flow of 4.9% and 4.4%, respectively, in the two storage tanks evaluated when the rainwater tank capacities were estimated using the method based on the German Practical Method.

Efficient Storm Water Management and Rainwater Harvesting System: a Case Study in Swami Vivekananda Airport Raipur

2019 ◽  
Vol 32 (1) ◽  
pp. 7-13
Author(s):  
Digeshwar Prasad Sahu
Keyword(s):  
Rainwater Harvesting ◽  
Cost Benefit Analysis ◽  
Drainage System ◽  
Daily Rainfall ◽  
Cost Benefit ◽  
Storm Water ◽  
Treatment Unit ◽  
Rainwater Tank ◽  
Before And After ◽  
Swami Vivekananda

Water is crucial and it has always been considered throughout history as a natural resource for the survival of humanity and other living beings therefore globally the shortage of quality water and its availability is an important issue. Groundwater is the only source of water of the Swami Vivekananda Airport Raipur, and it faces water crisis when the groundwater level decreases. In this scenario, Rain Water Harvesting (RWH) can contribute considerably to tackle these problems. Rainwater treatment systems can be installed at different potential locations in study area based on their physical site conditions such as slope, elevation etc. The airport has 38955.62 Square meters rooftop area out of 2.108 Square Kilometres total area, water collected from the rooftop will fulfil approximately 30% of the total daily demand of the airport. Apart from this airport is properly designed drainage system storm water is collected and separated into three potential zones. Zone I, II and III having area 0.2393, 0.4307 and 1.4382 sq. Kms respectively, which produce a different runoff amount based on maximum daily rainfall. Storm water is treated by Slow Sand Filter (SSF) of rate of 200 litres per hour per square meter and stored under design capacity, size and number of treatment unit depend on the maximum discharge at their respective zones. Treated rainwater is utilized for recharge purpose through the recharge trench when excess water comes from the rainwater tank. The cost-benefit analysis also done for before and after implementation of the project.

District-scale water management: impacts on infrastructure, energy, pollution and greenhouse gas emissions

2012 ◽  
Vol 7 (4) ◽  
Author(s):  
D. Myers ◽  
P. Grace ◽  
E. Lopez Calva ◽  
X. Zhang
Keyword(s):  
Water Conservation ◽  
Conceptual Development ◽  
Rainwater Harvesting ◽  
Energy System ◽  
Performance Criteria ◽  
Urban Systems ◽  
Carbon Footprints ◽  
Peak Runoff ◽  
The Impact

This paper explores the impact of water conservation and rainwater harvesting practices implemented at the site or district scale on the infrastructure, energy and water cycles of their larger urban systems. A case study is presented of a conceptual development in a Southeast Asian climate. Two technologies are examined: water-efficient fixtures and appliances and rainwater harvesting and beneficial use. Practices to reduce water consumption at the site or district scale have implications in the larger system, ranging from reductions in water that has to be treated and distributed, reductions in wastewater that has to be collected and treated, and reductions in energy consumed. Similarly, using rainwater for irrigation will reduce the amount of potable water demand, and will have system energy implications. The paper considers performance criteria for the entire water-energy system, including peak runoff, pollutant loads, energy and carbon footprints.

scholarly journals Reduction of Potable Water Consumption and Sewage Generation on a City Scale: A Case Study in Brazil

Water ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 2351 ◽  
Author(s):  
Cureau ◽  
Ghisi
Keyword(s):  
Water Consumption ◽  
Potable Water ◽  
Rainwater Harvesting ◽  
Single Family ◽  
Water Savings ◽  
The Public ◽  
Water Demands ◽  
Harvesting Systems ◽  
The City ◽  
Greywater Reuse

This article aims to estimate the reduction of potable water consumption and sewage generation in the city of Joinville, southern Brazil. Four strategies were considered to promote potable water savings: replacement of conventional toilets with dual-flush ones, greywater reuse, rainwater harvesting, and the combination of these three strategies. Residential, public, and commercial sectors were assessed. The potential for potable water savings ranged from 1.7% to 50.5%, and the potential for sewage generation reduction ranged from 2.1% to 52.1%. The single-family residential sector was the most representative for water savings and sewage generation reduction. The public sector would be the least contributor to such reductions. It was found that in the city of Joinville, for low non-potable water demands, greywater reuse was the most viable strategy to save water. When non-potable demand is high and there is a large catchment area, it is recommended to install rainwater harvesting systems. It was concluded that there is a high potential for potable water savings and reduction of sewage generation if measures were adopted in Joinville, but it is necessary to evaluate which strategy is the most appropriate for each building.

Modeling water consumption in multifamily buildings: a case study in Southern Brazil

2021 ◽  
pp. 1-13
Author(s):  
Kairo Pereira Teodoro da Silva ◽  
Andreza Kalbusch ◽  
Elisa Henning ◽  
Guilherme Araújo Lira Menezes
Keyword(s):  
Water Consumption ◽  
Southern Brazil ◽  
Multifamily Buildings

scholarly journals Factors impacting community’s prioritization towards the benefits of Sustainable Urban Drainage Systems: A case study of Nhieu Loc – Thi Nghe sub-basin, Ho Chi Minh City

2020 ◽  
Vol 4 (4) ◽  
pp. First
Author(s):  
Nguyen Hoang My Lan ◽  
Ho Huu Loc ◽  
Phan Dinh Bich Van ◽  
Vo Le Phu ◽  
Le Van Trung
Keyword(s):  
Statistical Tests ◽  
Drainage System ◽  
Impact Factors ◽  
Urban Drainage ◽  
Run Off ◽  
Spss Software ◽  
The Impact ◽  
Priority Levels ◽  
Data Processing Methods

Sustainable Urban Drainage System (SUDS) includes various drainage techniques designed to reduce the run-off flow, improve the water quality, and provide amenity or landscape features. However, selecting the appropriate SUDS technique depends on not only the technical characteristics but also the community's perception and preference. Therefore, this study aims to determine the impact factors on the probability of households' prioritization towards SUDS benefits in the context of Nhieu Loc - Thi Nghe sub-basin, including the benefits of flood reduction, environmental enhancement, and landscape improvement. Data processing methods used in this study consist of statistical tests and ordinal regression using SPSS software. The regression results show that the overall accurate prediction rate for the 3 priority levels of SUDS benefits ranges from 50% to 70%. Factors that statistically significantly influence the priority include household income, knowledge of SUDS, frequency of flooding, depth of flooding, the distance to the nearest park, the distance to the nearest water body, and the distance to the nearest flooded location. In particular, the proximity to the nearest park affects the priority choice for all SUDS benefits with the principle that households near the park will probably choose higher priority to SUDS benefits than those living further.

scholarly journals An Analysis of Eco-Technology Allowing Water and Energy Saving in an Environmentally Friendly House—A Case Study from Poland

Buildings ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 180 ◽  
Author(s):  
Agnieszka Stec ◽  
Aleksandra Mazur
Keyword(s):  
Life Cycle Cost ◽  
Rainwater Harvesting ◽  
Environmentally Friendly ◽  
Heat Pumps ◽  
Solar Panels ◽  
Fossil Energy ◽  
Alternative Systems ◽  
Detached House ◽  
The Impact

The Life Cycle Cost (LCC) analysis on selected alternative systems was carried out to reduce the demand for potable water and energy in a detached house designed in accordance with the concept of environmentally friendly house. The tests included a rainwater harvesting system, graywater recycling system, solar panels, photovoltaic panels, air heat pumps, ground heat pumps, wind turbines, drain water heat recovery units, and biomass boilers. The analysis was made for many investment variants where different combinations of the mentioned solutions were applied. In addition to the LCC analysis, some tests were also carried out to determine an impact of the investment options on the environment. This was done by calculating CO2, SO2, NOx, CO and dust emissions. The research was carried out for a different number of occupants and variable levels of water consumption, which allowed determining the impact of these parameters on the results obtained. They showed that for any of the computational cases the traditional option of the installation was not the most advantageous solution in financial and environmental terms, and the systems in question could be an alternative to this option. Thanks to their implementation, the consumption of fossil energy resources and natural water resources will be reduced, and the emission of pollutants will be limited, which will contribute to an improvement of the natural environment.

Plugrisost: a model for design, economic cost and environmental analysis of rainwater harvesting in urban systems

2014 ◽  
Vol 9 (2) ◽  
pp. 243-255 ◽  
Author(s):  
X. Gabarrell ◽  
T. Morales-Pinzón ◽  
J. Rieradevall ◽  
M. R. Rovira ◽  
G. Villalba ◽  
...  
Keyword(s):  
Environmental Analysis ◽  
Rainwater Harvesting ◽  
Smart Cities ◽  
Tap Water ◽  
Environmental Indicators ◽  
Urban Systems ◽  
Optimal Size ◽  
Single Family ◽  
Successful Operation ◽  
Rainwater Tank

In the context of transition to sustainability, one of the main challenges facing societies today is the supply of water. By integrating different methodological tools and studies we developed the innovative software program Plugrisost® (rainwater, greys and sustainability), a simulation model, that facilitates the economic evaluation and the potential environmental impact of alternative water supplies (rainwater harvesting [RWH] and greywater systems) at different scales of urban planning. This modelling tool contributes to urban water planning for smart cities development. Plugrisost® analyses the optimal design variables, cost and environmental performance of RWH and greywater systems, using tap water production as a reference system for comparison. The use of economic and environmental indicators can make the optimal size of a rainwater tank more restrictive when it is compared to the results regarding the satisfaction of the demand for rainwater. Economic and environmental analysis can help avoid oversizing tanks for rainwater and thus obtain greater benefits. Plugrisost includes estimated cost and Global Warming Potential, as well as other life cycle impact indicators for this purpose. A case study analyzing the implementation of a RWH system in a single-family house in Aveiro, Portugal is included, showing the importance of rainwater availability and demand for the successful operation of simulated systems.

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