A rainwater tank pump works by drawing water from the tank and delivering it to where it's needed, often after filtration. Here's a breakdown of the process:
Rainwater Harvesting Process
Before discussing the pump itself, it's important to understand how the water gets to the tank in the first place.
| Step | Description |
|---|---|
| 1. Collection | Rainwater falls onto a catchment area, typically a roof. |
| 2. Funneling | The water is then channeled into gutters. |
| 3. Transportation | Gutters direct the water to pipes. |
| 4. Storage | Pipes deliver the water into a storage tank (cistern). |
The Pump's Function
Once the rainwater is stored, the pump becomes essential for utilizing it.
- Water Intake: According to the reference, the pump pulls water out from the cistern via a small pipe. This pipe is submerged in the tank.
- Pressurization: Inside the pump, a motor drives an impeller or other mechanism that increases the water pressure. This pressurized water is what allows it to be delivered through pipes to taps, appliances, or irrigation systems.
- Filtration: Then, the water passes through a filter after being drawn from the cistern. This removes sediment, leaves, and other debris that may have entered the tank. Filtration ensures the water is cleaner and safer for use.
- Delivery: Finally, the pressurized and filtered water is sent through the outlet pipe to its destination.
Types of Rainwater Tank Pumps
While the basic principle remains the same, there are different types of rainwater tank pumps:
- Submersible Pumps: These pumps are placed inside the tank and push the water upwards.
- External Pumps: These pumps sit outside the tank and draw the water out.
The choice of pump depends on factors like the tank size, required water pressure, and desired flow rate.
