From Rainwater Harvesting to Rainwater Management Systems

2018 ◽  
pp. 3-9
Author(s):  
David Butler
Keyword(s):  
Rainwater Harvesting ◽  
Management Systems ◽  
Rainwater Management

scholarly journals Is the Microfiltration Process Suitable as a Method of Removing Suspended Solids from Rainwater?

Resources ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 21
Author(s):  
Karolina Fitobór ◽  
Bernard Quant
Keyword(s):  
Suspended Solids ◽  
Rainwater Harvesting ◽  
Anthropogenic Pressure ◽  
Granulometric Analysis ◽  
Suspended Substances ◽  
Rainwater Runoff ◽  
Rainwater Management ◽  
Alternative Sources ◽  
Average Size ◽  
Silt Density Index

Due to climate change and anthropogenic pressure, freshwater availability is declining in areas where it has not been noticeable so far. As a result, the demands for alternative sources of safe drinking water and effective methods of purification are growing. A solution worth considering is the treatment of rainwater by microfiltration. This study presents the results of selected analyses of rainwater runoff, collected from the roof surface of individual households equipped with the rainwater harvesting system. The method of rainwater management and research location (rural area) influenced the low content of suspended substances (TSS < 0.02 mg/L) and turbidity (<4 NTU). Microfiltration allowed for the further removal of suspension particles with sizes larger than 0.45 μm and with efficiency greater than 60%. Granulometric analysis indicated that physical properties of suspended particles vary with the season and weather. During spring, particles with an average size of 500 μm predominated, while in autumn particles were much smaller (10 μm). However, Silt Density Index measurements confirmed that even a small amount of suspended solids can contribute to the fouling of membranes (SDI > 5). Therefore, rainwater cannot be purified by microfiltration without an appropriate pretreatment.

Rainwater Management to Mitigate the Effects of Development on the Urban Hydrologic Cycle

2007 ◽  
Vol 2 (1) ◽  
pp. 37-52 ◽  
Author(s):  
Andrea Bradford ◽  
Chris Denich
Keyword(s):  
Water Quality ◽  
Stormwater Management ◽  
Rainwater Harvesting ◽  
Low Impact Development ◽  
Green Roofs ◽  
Hydrologic Cycle ◽  
Porous Pavement ◽  
Rainwater Management ◽  
Management Approaches ◽  
Stream Erosion

Traditional stormwater management approaches that rely on rapid conveyance and end-of-pipe detention have not adequately mitigated the effects of urbanization on water resources and the aquatic and human communities that rely upon them. Low-impact development techniques that can support a shift to management of the post-development hydrologic cycle and runoff volumes offer better opportunities to prevent stream erosion and protect groundwater recharge, characteristics of the flow regime and water quality. The application and design of four techniques—porous pavement, bioretention cells, green roofs and rainwater harvesting— in the management of the post-development water balance are presented.

Rainwater harvesting and management – policy and regulations in Germany

2013 ◽  
Vol 13 (2) ◽  
pp. 376-385 ◽  
Author(s):  
T. Schuetze
Keyword(s):  
Flood Control ◽  
Municipal Wastewater ◽  
Rainwater Harvesting ◽  
Management Policy ◽  
Wastewater Management ◽  
Public And Private ◽  
Climate Resilience ◽  
Rainwater Management ◽  
Decentralized Management ◽  
Private Actors

This paper discusses the most important policies and regulations supporting the decentralized management, harvesting and utilization of rainwater in Germany, where such measures have been increasingly applied during the last few decades. The development and implementation of specific policies and regulations contributed significantly to that trend. They also work as incentives for the development of advanced technologies and businesses as well as the widespread and growing implementation of measures for decentralized rainwater management, harvesting and utilization by public and private actors. This development can generally be associated with environmental and economic concerns related with required adaptation to changes in climate, demographic structures and infrastructures as well as climate resilience including flood control and drought resistance. The addressed and supported measures can be assigned to the two focus areas ‘Decentralized rainwater harvesting and utilization’, aiming for saving of precious fresh water resources and centrally supplied drinking water, as well as ‘decentralized rainwater retention and management’, aiming for flood control and protection of existing infrastructures and ecosystems. The decentralized management of rainwater and its separation from combined sewer systems at the source is generally regarded as the state of the art and basic condition for sustainable municipal wastewater management.

scholarly journals Climate adaptive urban planning and design with water in Dutch polders

2011 ◽  
Vol 64 (3) ◽  
pp. 722-730 ◽  
Author(s):  
T. Schuetze ◽  
L. Chelleri
Keyword(s):  
Water Policy ◽  
Flood Control ◽  
Water Systems ◽  
Water Levels ◽  
Management Systems ◽  
Polluted Water ◽  
Local Climate ◽  
Planning And Design ◽  
Urban Planning And Design ◽  
Rainwater Management

The existing water management in Dutch polders is based on independent water systems for each polder. These are featuring artificial stabilized ground and surface water levels. As a result of the local climate the water levels in the polders are not continuously at a constant level. To maintain a stable water table in the polders, the surplus of relatively clean rainwater has to be pumped away during the cold seasons into canals or rivers, which are located on a higher level. During the summer relatively polluted water from these waterways is led into the polders to top up the declining water levels. This procedure leads to various problems regarding water quantity and water quality. The described existing system is not adaptable to climate change and includes the risk of flooding, particularly from torrential rain. Therefore it is crucial to develop, preferably self-sufficient, rainwater management systems in the polders. They should allow the fluctuation of the water levels inside the polders for seasonal storage and flood control. The described concept is adopted in the present water policy in the Netherlands as well as in research and recent urban development projects in Dutch polders.

Operational data of the Star City rainwater harvesting system and its role as a climate change adaptation and a social influence

2011 ◽  
Vol 63 (12) ◽  
pp. 2796-2801 ◽  
Author(s):  
M. Y. Han ◽  
J. S. Mun
Keyword(s):  
Climate Change ◽  
South Korea ◽  
Climate Change Adaptation ◽  
News Media ◽  
Rainwater Harvesting ◽  
Energy Requirement ◽  
Sewer System ◽  
Rainwater Tank ◽  
Rainwater Management ◽  
Operational Data

The Star City rainwater harvesting system (RWHS) was featured in the December, 2008, issue of Water 21. The article highlighted that the RWHS has a 3,000 m3 rainwater tank used in water saving, flood mitigation, and emergency response. Since then, many news media, public officials, and people from both South Korea and abroad have visited the RWHS. In this paper, two years of the system's operational data are presented and its role in short- and long-term climate change adaptation is investigated. The downstream sewer system has become safe for a 50-year rainfall without upgrading the existing sewer system, which was designed for a 10-year period. The 26,000 m3 of water saved has reduced the energy requirement of transferring water from a distant area. The success of the Star City RWHS has influenced 47 cities across South Korea, including Seoul, to enact regulations on rainwater management. It has shown that decentralized rainwater management can supplement the existing centralized system to ensure its safety.

scholarly journals Research on the effectiveness of individual infiltration devices

2018 ◽  
Vol 45 ◽  
pp. 00091
Author(s):  
Ewa Suchanek-Gabzdyl ◽  
Maciej Mrowiec
Keyword(s):  
Management Systems ◽  
Water Runoff ◽  
Negative Effects ◽  
Urbanization Process ◽  
Urban Catchment ◽  
Quality Of Water ◽  
Rainwater Management ◽  
Technical Solutions ◽  
Impervious Areas

The increasing urbanization process in Europe has resulted in an increase in the proportion of impervious areas in the development of watersheds. This fact, combined with the more frequent occurrence of volatile rainfall, contributes to the formation of high intensity surface runoff, which results in local flooding of the lowest located areas. Water runoff also causes a large amount of pollution from the catchment to be flushed away and transported to the receiver, which generates many negative effects on the environment. Due to these unfavorable changes in the urban catchment, it is necessary to manage the waters in accordance with the principles of sustainable development. One of the basic tools to protect the quantity and quality of water discharged from the catchment area is to take into account the need to implement technical solutions to increase the retention of rainwater in cities. Such solutions, consisting of designing natural rainwater management systems, could work independently or in cooperation with traditional rainwater drainage systems [1].

scholarly journals Analysis of short – term heavy rains in eastern Slovakia in the period 2003 - 2018

2020 ◽  
Vol 15 (1) ◽  
pp. 29-37
Author(s):  
Adam Repel ◽  
Martina Zeleňáková ◽  
Vinayakam Jothiprakash ◽  
Helena Hlavatá ◽  
Slávka Gałaś ◽  
...  
Keyword(s):  
Design Parameter ◽  
Point Of View ◽  
Management Systems ◽  
Short Term ◽  
Drainage Systems ◽  
Technical Point ◽  
Rainwater Management ◽  
Heavy Rains

Abstract Short-term heavy rains are one the most important rains from a meteorological, hydrological, and also technical point of view. When designing rainwater drainage systems or rainwater management systems, the intensity of short-term rains is used as a design parameter, because of short-term rains usually reach the highest intensity. This paper is focused on analysis of short-term heavy rains occurrence in the last 15 years in 3 rainfall stations in eastern Slovakia. The data used in analysis are automatically collected 10-minute precipitation totals at rainfall stations Poprad, Kamenica nad Cirochou and Košice.

Sign in / Sign up

Export Citation Format

Share Document