"Water collected from rooftop is not sufficient !!! "
We have been searching the ideas and technologies of easy and efficient rainwater harvesting. But our initial calculation has showed that rainwater harvested from the roof for a house is not sufficient for 12 months. The demand of water per house is so high that the water collected from the roof is insufficient even on the days of monsoon.
Our calculation showed that the demand of a single month(July) is met by the harvested rainwater and water collected of three months of rainy season are very near to the demand.
So, this is the major reason why people don't show interest in installing the rainwater harvesting system in a modern houses. People simply ignore because they know it's not sufficient. So, they install medium sized solar(water) instead of rainwater harvesting system.
Is rainwater harvesting expensive ?
Its not. There are no such expensive thing to be installed in this system. Filter might take some space. It biological sand filter, so its not costly.
In recent building the rooftop water is directly connected to the drainage. So its a bit hard to install this system in pre-existing building. Also the plumbers are not well trained about the system and the techniques of rainwater harvesting.
So, what should be done ?
Yes, rainwater is not sufficient for every months but if we see it for long term its very useful. Its for lifetime and every year we can collect a lot of water saving some good amount of money. For this people should be aware of its importance for long term. Now a days every new house are designed with an underground water so its very easy to collect the rooftop water. Just connect the collected water to the underground storage by introducing a bio-sand filter as a filter media.
For the old buildings the rooftop water should be separated from the drainage connection and should be connected to the storage (either underground or plastics tanks on the ground floor).
Concluding the insufficiency of rainwater, yes, its true, but for long term its beneficial. And this insufficiency of rooftop rainwater harvesting demands another technique of rainwater harvesting called Surface Runoff Rainwater Harvesting. And believe me this technique is going to solve many things like:
What is surface runoff rainwater harvesting ? How its going to solve the problem listed ? (Next post)
We have been searching the ideas and technologies of easy and efficient rainwater harvesting. But our initial calculation has showed that rainwater harvested from the roof for a house is not sufficient for 12 months. The demand of water per house is so high that the water collected from the roof is insufficient even on the days of monsoon.
Our calculation showed that the demand of a single month(July) is met by the harvested rainwater and water collected of three months of rainy season are very near to the demand.
So, this is the major reason why people don't show interest in installing the rainwater harvesting system in a modern houses. People simply ignore because they know it's not sufficient. So, they install medium sized solar(water) instead of rainwater harvesting system.
Is rainwater harvesting expensive ?
Its not. There are no such expensive thing to be installed in this system. Filter might take some space. It biological sand filter, so its not costly.
In recent building the rooftop water is directly connected to the drainage. So its a bit hard to install this system in pre-existing building. Also the plumbers are not well trained about the system and the techniques of rainwater harvesting.
So, what should be done ?
Yes, rainwater is not sufficient for every months but if we see it for long term its very useful. Its for lifetime and every year we can collect a lot of water saving some good amount of money. For this people should be aware of its importance for long term. Now a days every new house are designed with an underground water so its very easy to collect the rooftop water. Just connect the collected water to the underground storage by introducing a bio-sand filter as a filter media.
For the old buildings the rooftop water should be separated from the drainage connection and should be connected to the storage (either underground or plastics tanks on the ground floor).
 |
| Bio-sand filter |
Concluding the insufficiency of rainwater, yes, its true, but for long term its beneficial. And this insufficiency of rooftop rainwater harvesting demands another technique of rainwater harvesting called Surface Runoff Rainwater Harvesting. And believe me this technique is going to solve many things like:
- the problem of water crisis,
- drainage problem,
- submergence problem of Kathmandu and
- floods in rivers.
What is surface runoff rainwater harvesting ? How its going to solve the problem listed ? (Next post)
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