Reefton Mine Restoration Project
Our work on the project started in 2020, and the land will eventually be handed over to the DoC in late 2024. The implementation of a vertical flow reactor removes heavy metals like iron and arsenic from water seepages, before the water is then gravity fed into devil's creek.
Problems and Solutions
There were high expectations for the sustainability outcome of this closure, with the passive water treatment software system requiring constant monitoring. Having Cirro involved early in the process meant that we were able to provide our expertise on the monitoring design, and ensure the appropriate hardware was used was fit for purpose.
We’ve got a wide variety of hardware options at our disposal, and there’s a bit that goes into determining an ideal solution. In this case we needed hardware that could interface with a PLC (programmable logic controller) used for mediating some of the environmental systems, and hardware that was sturdy and reliable that would last over years of use. We were also able to get around challenges with networking access through the VPN and firewalls on site.
Instrumentation used on Reefton:
- VWP (Vibrating Wire Piezometers)
- Turbidity sensors
- Lake level monitors
- Webcams
We were also uploading client supplied historic data, and high-resolution drone imagery which is useful in areas where the existing satellite imagery is low resolution or out of date.
Cirro Web Interface
