EKR-DT Process Test Results

This time-lapse video provides an illustration of the dewatering process.

327 Hour Time Lapse Video

The ongoing process optimisation research is being conducted in collaboration with Western University and is investigating the following research questions:

  • Dewatering behaviour at high % solids (>50%)
  • Optimisation of energy consumption
  • Scalability
  • Anode conservation
  • Impact of flocculants
  • Impact of fines content
  • Control of densification patterns
  • Improving dewatering predictability

Results from this program have already answered some of important questions.

  • The ability of the technology to dewater to greater than 65% solids has been proven through repeated tests.
  • The ability to regulate the process to favourably control the vertical and lateral density gradients produced during the dewatering process has been proven through repeated tests.
  • The engineering design approach that EKS has developed for scaling up and forecasting the dewatering performance of commercial-scale systems has been empirically validated.
  • The energy efficiency of commercial-scale systems will be equal to or great than the observed energy consumption rates in smaller scale applications.

Before Bench Scale Laboratory Testing

Before Bench Scale Laboratory Testing

After Bench

After Bench Scale Laboratory Testing

Small scale tests demonstrated that EKR can effectively recover significant quantities of water from tailings and compact solids into an impermeable material that exceeds regulatory standards.

Medium Scale Testing

Before Treatment Begins

Before Treatment Begins

After Treatment is Completed

After Treatment is Completed

In tests of up to one cubic meter, EKS demonstrated the EKR technology works on a larger scale. Another encouraging result was the power costs from this scale testing environment confirm that EKS has developed a technology that can be cost effective for large scale treatment.

5 Meter Spacing Tests

5 Meter Testing Laboratory

5 Meter Testing Laboratory

5 Meter Compaction

5 Meter Compaction

AnodeAfterTest

To demonstrate scale up potential, EKS built a test call with five meter spacing between electrodes. The test proved that wide spacing is feasible while also providing valuable detail on water recovery and geotechnical characteristics of solids.