Rain Harvesting for Commercial use
What is Rainwater Harvesting?
Rainwater is collected from your roof area; it is then passed through a filter system which removes any large pieces of debris, leaves, etc. and then into the underground storage tank via a calmed inlet which is designed to stop the disturbance of any sediment in the bottom of the tank. Excess rainwater will pass through a siphoned overflow fitted to the tank – to be connected to the storm drain or soakaway.
Why Harvest Rainwater?
- Rising utility bills, reduction of running costs and environmental implications are just three reasons for investing in a rainwater harvesting system. Up to 80% of commercial main water can be replaced by rainwater harvesting.
- Rainwater harvesting is a key component to reach compliance within the code for sustainable homes – to reduce overall water consumption.
- Additionally, rainwater re-use scores highly with the Water Efficiency sector of the BREEAM accreditation scheme and can help gain planning permission by meeting site drainage requirements (ref. Building Regulations Part H) as part of a sustainable drainage (SUDS) scheme.
What Types of System are Available?
There are three basic types of rainwater harvesting systems available:-
- Gravity (non-pressurised) – Rain Box Gravity System™
Collected rainwater is pumped from the main holding tank to an elevated head/break tank as in a normal gravity fed system.
- Direct (pressurised) – Rain Box Duo™
Collected rainwater is pumped directly from the main holding tank to the serviced appliances.
- Combination – Rain Box Combi™
Collected rainwater is pumped or gravity fed to a low level break tank. In turn, the water is then gravity fed to an integral or external booster pump system for onward distribution to the serviced appliances.