Child Labour and Rainwater Harvesting

Topics: Rainwater harvesting, Irrigation, Water purification Pages: 25 (8965 words) Published: June 21, 2013
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Rainwater harvesting

Rainwater capture and storage system at theMonterrey Institute of Technology and Higher Education, Mexico City.

A cistern for rainwater storage
Rainwater harvesting is the accumulation and deposition of rainwater for reuse before it reaches the aquifer. Uses include water for garden, water for livestock, water for irrigation, etc. In many places the water collected is just redirected to a deep pit with percolation. The harvested water can be used for drinking water as well if the storage is a tank that can be accessed and cleaned when needed. Contents  [hide]  * 1 Advantages * 2 Quality * 3 System setup * 4 Vendors * 5 Rain water harvesting by freshwater flooded forests * 6 New approaches * 7 History * 7.1 Earlier * 7.2 Present day * 7.2.1 India * 7.2.2 Sri Lanka * 7.2.3 United Kingdom * 7.2.4 Israel * 8 See also * 9 References * 10 Bibliography * 11 External links| -------------------------------------------------

Advantages[edit]
Rainwater harvesting provides an independent water supply during regional water restrictions and in developed countries is often used to supplement the mains supply. Rain water harvesting provides water when there is a drought. Rainwater harvesting prevents flooding of lowlying areas. Rain water harvesting replenishes the ground water table and enables our dug wells and bore wells to yield in a sustained manner. It helps in the availability of clean water by reducing the salinity and the presence of iron salts. -------------------------------------------------

Quality[edit]
The concentration of contaminants is reduced significantly by diverting the initial flow of runoff water to waste.[1] Improved water quality can also be obtained by using a floating draw-off mechanism (rather than from the base of the tank) and by using a series of tanks, with draw from the last in series. The stored rainwater may need to be analyzed properly before use in a way appropriate to its safety. The quality of collected rainwater is generally better than that of surface water. Contamination is always possible by airborne dust and mists, bird feces, and other debris, so some treatment is necessary, depending on how the water will be used. -------------------------------------------------

System setup[edit]
Rainwater harvesting systems can be installed with minimal skills[2][clarification needed]. The system should be sized to meet the water demand throughout the dry season since it must be big enough to support daily water consumption. Specifically, the rainfall capturing area such as a building roof must be large enough to maintain adequate flow. Likewise, the water storage tank should be large enough to contain the captured water.[citation needed] -------------------------------------------------

Vendors[edit]
There are three main types of companies operating in the rainwater harvesting industry: makers of water storage, makers of accessories, and integrators. Water storage companies make tanks, barrels, and underground cisterns. Accessories are added to facilitate or improve the water capturing process. Integrators are regional practitioners which install systems.[citation needed] -------------------------------------------------

Rain water harvesting by freshwater flooded forests[edit]

Ratagul Freshwater Flooded Forest, Bangladesh
Rain water harvesting is possible by growing fresh water flooded forests without losing the income from the used /submerged land.[3] The main purpose of the rain water harvesting is to utilize the locally available rain water to meet water requirements throughout the year without the need of huge capital expenditure. This would facilitate availability of uncontaminated water for domestic, industrial and irrigation needs. -------------------------------------------------

New approaches[edit]
Instead of using the roof for catchment,...

References: History
Child labourers, Macon, Georgia, 1909
Victorian era
Children going to a 12-hour night shift in the United States (1908).
Children working in home-based assembly operations in United States (1923).
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