The designs incorporated in EWS technology are unlike other electro-coagulation (EC) systems tried over the years.
Other EC Approaches
Earlier EC generations have historically used heavy plates as the anode and cathode, with wide gap separation. The wide separation requires high power to achieve the dosage rates required for effective coagulation.
Typical EC systems have been stand-alone systems with separate pieces of equipment for gravity separation and disinfection. EWS integrates these functions into one stand-alone piece of equipment with SCADA control over all three technologies.
Our EC Approach
Instead, the EWS electro-coagulation reactors use an outer tube and an inner rod as the cathode and anode with the water flowing through the annular space.
The resultant narrow annular gap and high mass transfer rate minimizes the power necessary to achieve effective coagulation. The high mass transfer rates also inhibit scaling and anode passivation.
As a result of the above designs, the EWS EC reactors require far less power with an estimated Selective Energy Consumption of 0.28kWh per barrel of water.
Less anode consumption is seen, and the anodes are far easier to replace and maintain.
Our Electro-Flotation Approach
EWS electro-flotation technology utilizes non-donating anodes and cathodes to generate micro-bubbles over the complete volume of water in the flotation chamber. These microbubbles are small enough to embed or attach themselves to the coalesced oil and suspended solid particles.
The flotation chamber itself is also specifically designed to separate a larger percentage of the oil and solids, leaving progressively clearer water.