RainwaterToilet
| Projects | |
|---|---|
| Participants | |
| Skills | Plumbing, Building |
| Status | Active |
| Niche | Mechanics |
| Purpose | World domination |
To try make my new house a bit more environmentally-innocuous I decided to make a system that collects rainwater and uses it for flushing toilet(s), in addition to irrigate the garden.
First I had to make a design. Several systems are possible, but for simplicity I opted for a pressurized water pump (hydrofoor) that simply automatically keeps its outlet pressurized. Then you can make the rest of the system like any other standard plumbing, since the municipal water supply has similar properties. A lot less error-prone than remote water-level sensors that need to signal a pump to shut off...
So the requirements were:
- a large buffer (rain barrel) plus automatic fill system
- pressurized water pump + water filter
- a separate extra conduit from pump to toilet(s)
- re-routing some of the roof drainpipe to collect as much water as possible
- a system that allows switching back to tap water in times of drought
I purchased a beautiful 400 liter rain barrel that is very discrete. The cheapest pump I could find https://www.ts24.nl//product_info.php/info/118962/Eurom-Hydrofoorpomp-FLOW-HG-800P/
