Water is an invaluable resource and absolutely vital to life but many of the times taken for granted. Increasing population is demanding even more from our already crippled water and wastewater infrastructure. It is the need of an hour to think about alternate sources of clean water rather than just depending on municipal water supply, which is uncertain and sometimes unhealthy. By merely installing shower head with lesser flow rate or by reducing water consumption we are looking at short term solution. The time is demanding more. Get ready for “Self Sufficiency” in water.
What does zero water building mean?
Water harvesting is no different than renewable energy– opportunities abound in your building to capture a free resource and turn it into an economical solution. The integration of “zero water building systems ” that emphasize water efficiency, and on-site supply, treatment and reuse is becoming increasingly important as communities seek to strengthen the resiliency of their water systems.
By capturing precipitation and treating wastewater produced on site, occupants of a household will close the loop of their water system, thus leading to water independence.
The key component of sustainable building:
To understand the zero water building in depth we must know the major source of water inflow to achieve the same.
The key source of water in self sustainable building is the direct source of water which is rain. It is a major source of water in building.
Understanding the concept of rainwater harvesting
Rainwater harvesting is the technique to collect, recharge the groundwater and use it later for various uses which is otherwise goes down the drains.The rainwater has its own characteristic qualities and can be used for various non-potable uses and with little treatment can be made available for potable activities. For rainwater harvesting, first the rainwater is collected from various hard surfaces such as roof tops and/or other types of manmade hard surfaces and collected in the underground pit for further treatment and use.
Rain water harvesting has many advantages. Most important of those are
- To inculcate habit of conserving water
- To restore groundwater
- To minimize use of municipal water supply
- To get the most out of rain water
- To minimize soil erosion due to rains
- To conserve surface water runoff during monsoon
Identifying the grey water and need to re-utilize it
Commonly, most of the water consumption at home is for washing laundry, mopping, cleaning, bathing, toilet flushes, irrigation, etc. and the potable water is used to fulfill pretty much of all these. The water once used for bathroom sink, showers, bath tubs and clothes is called grey water and is nutrient rich and is best suitable for plants. And the water generated from kitchen sink and toilet is known as blackwater. At places where there is no human contact, such as toilet flushes and sub – soil irrigation of non-edible crops, we do not need fresh, potable water. We can treat greywater produced on site by bathtub/shower, washing machine, and bathroom sink and return them back into the system for these types of uses.
Combining water conservation and waste water management to get the best results
In order to achieve zero water and self-sustainable building, both rainwater harvesting and greywater management is clubbed together to get the desired results. Here the concept of H2zerO by Sanicon Energy Solution aims at developing energy efficient building. By capturing precipitation and treating wastewater produced on site, occupants of a household will close the loop of their water system, thus leading to water independence.
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