Green Roof Method Of Rainwater Harvesting

Types of rainwater harvesting.

Green roof method of rainwater harvesting.

Greenroofs are a best management practice in reducing and delaying stormwater runoff. This simple practice reroutes rooftop drainage pipes from draining rainwater into the storm sewer to draining it into rain barrels cisterns or permeable areas. Water collected in storage tank s and pumped directly to points of use. Contrary to the other systems above which collects the rainwater into a storage container a green roof system doesn t.

The harvesting of rainwater is as simple as collecting water from surfaces on which rain falls and subsequently storing this water for later use. By using greenroofs as rainwater capture areas the amount of water will be reduced making the system cost less efficient and difficult to gauge water collection. Normally water is collected from building roofs and stored in dedicated water tanks. Water collected in storage tank s and fed by gravity to points of use.

Water collected in storage tank s pumped to an elevated cistern and then fed by gravity to the points of use. With this system it is set in a way that it takes the rainwater directly to your plants. Rather than collect the rainwater in a storage unit then divert it to the garden you could institute a green roof on your property so that plants can utilize the water immediately. Extensive green roofs potsdammer platz berlin rainwater harvesting.

There are three main types of rainwater harvesting system. Green roof there is another method of rainwater harvesting that cuts out the middleman so to speak. Effectively a living green roof is covering the roof with an absorbent layer. Looking at buildings we can slow the rate of rainwater runoff from roofs with the use of green roofs.

A typical green roof build up consists of standard waterproofing a drainage layer and a layer of growing medium which the planting grows into. Furthermore it is possible utilise rainwater harvesting of a green roof contrary to claims from other industries. There have been many studies on green roofs and water quality around the world. Green roof technology is improving all the time.

Water from the roof flows from this disconnected downspout into the ground through a filter of pebbles. Rooftop rainwater harvesting systems are useful for augmenting the water systems in both urban and rural areas and they are excellent for use in arid and semi arid areas where traditional water sources are not readily available. In rooftop rainwater harvesting the rainwater is captured from the roof and directed downwards through a rainwater pipe into a water storage tank or a container.