What are the factors to be considered for rain water harvesting?

What are the factors affecting rain water harvesting?

Some of these factors are:

  • The quantum of runoff.
  • Features of the catchments.
  • Impact on the environment.
  • Availability of the technology.
  • The capacity of the storage tanks.
  • Types of the roof, its slope and its materials.
  • The frequency, quantity and the quality of the rainfall.

What are the requirements for rainwater harvesting?

The open well/recharge well should be 3-metre deep (minimum) with a minimum diameter of 0.9 metres without fillings (aggregates, jelly, sand etc.). Rainwater can be stored in a tank/sump or used for ground recharge. A combination of the two can be used to achieve the stipulated capacity of ‘X’ litres.

What variables should be considered when designing a rainwater harvesting system?

  • 1) Tank Size. …
  • 2) Tank Should Be Appropriate For The Property. …
  • 3) Roof Size. …
  • 4) Tank Location. …
  • 5) Filter Unit And Tank Levels. …
  • 6) Consider The Potential Demand. …
  • 7) Consider Future Usage. …
  • 8) Consider The Overall Drainage Scheme.
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What are the four main components of rainwater harvesting system?

Components of a Rainwater Harvesting System

  • Components of a Rainwater Harvesting System. …
  • Catchment Surface. …
  • Catchment Area Size. …
  • Type of Roofing Material. …
  • Gutters and Downspouts/Conduits. …
  • Sizing of Rainwater Pipes for Roof Drainage. …
  • Conveyance Systems. …
  • Leaf Screens/Roof Washers.

What are the two main techniques of rainwater harvesting?

There are two ways of harvesting rainwater, namely; surface runoff harvesting and rooftop rainwater harvesting.

What is the main purpose of rainwater harvesting?

The main purpose of the rainwater harvesting is to use the locally available rainwater to meet water requirements throughout the year without the need of huge capital expenditure. This would facilitate the availability of uncontaminated water for domestic, industrial, and irrigation needs.

What is rainwater harvesting explain with diagram?

Rain water harvesting (RWH) is a technique of collection and storage ofrainwater into natural reservoirs or tanks, or the infiltration of surface water into subsurface aquifers (before it is lost as surface runoff). One method of rainwater harvesting is rooftop harvesting.

Where do we use rain water?

10 Uses For Rain Water

  • Drinking and cooking. Rainwater can actually be very high-quality water for human consumption. …
  • Bathing and laundry. …
  • Flushing toilets. …
  • Watering lawns, gardens and houseplants. …
  • Composting. …
  • Water for wildlife, pets or livestock. …
  • Outdoor ponds and water features. …
  • Rinsing vegetables.

21.02.2018

What is rainwater harvesting very short answer?

Rain water harvesting is a technique of collection and storage of rain water in surface (storage tanks) or sub surface aquifer before it is lost as surface runoff.

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What are the different types of rainwater harvesting?

7 Different Types Of Rainwater Harvesting Systems

  • Water Butt. One of the most basic types of rainwater harvesting systems; water Butt collects rainwater in a container from natural rainfall and/or drain pipes. …
  • Direct-Pumped. …
  • Indirect Pumped. …
  • Indirect Gravity. …
  • Gravity Only. …
  • Retention Ponds. …
  • In-Ground Storage.

How do you design a rain water harvesting model in your house?

The easiest way to harvest rain is through a rain barrel (make your own from a large trash can or an old drum) linked to a pipe fitted to collect rainwater from the rooftop and verandah of the house.To prevent the barrel from becoming a mosquito breeding ground, fasten a tight-fitting top to it, and screen the ends of …

What are the design criteria for long term water harvesting?

28.3.1.2 Long Term Runoff Harvesting Techniques

The design criteria of these constructions are given below. Watershed should contribute a sufficient amount of runoff. There should be suitable collection site, where water can be safely stored.

What are the modern methods of rainwater harvesting?

MODERN METHODS OF RAINWATER HARVESTING

  • 1.1 Absorption pit method. …
  • 2 Absorption well method. …
  • 2.1 For Individual Houses. …
  • 2.2 Rainwater Harvesting in Group Houses. …
  • Groundwater Dams. …
  • 3.2 Sand storage dam. …
  • Ferrocement Technology.

9.01.2012

What is water harvesting and its techniques?

Water harvesting techniques gather water from an area termed the ‘catchment area’ and channel it to the cropping area or wherever it is required. Conservation techniques conserve water within the biomass and the soil by reducing run-off and keeping the water where it falls, as much as possible.

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Which is the component of water harvesting?

A rainwater harvesting system comprises components of various stages – transporting rainwater through pipes or drains, filtration, and storage in tanks for reuse or recharge.

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