25m3/h waste water pumping system

Scope

Waste water systems are challenging, I found. Although pre-filtration takes out bigger particles, the water can still be dirty, which can affect the pump. When picking a pump, you need to think ahead and predict how dirty the water can become and how the pump will react to that.

I helped Think Water Marlborough with this waste water pump system that was added onto an existing system. Because the water in the tank needs to go to a sprinkler system, the pump had to provide pressure. This end-suction pump was able to provide that. To protect the impellers, we added a suction strainer with a large filter surface area, and to protect the pump from cavitation in case the strainer gets dirty, the electrician programmed the right safeties into the frequency controller.

Project information

Head contractor: Think Water Marlborough

Location: Marlborough, New Zealand

System type: Waste Water

My role: Irrigation system engineering, the making of installation drawings, customer contact and financial project control.

Digital tools used: AutoCAD for installation drawings

Photos

Wastewater pump installed.

Side view of the pump setup.