The trail combined Encotech’s cross-flow filtration system integration with Sofi’s advanced microfilter.
The trail combined Encotech’s cross-flow filtration system integration with Sofi’s advanced microfilter.

Finnish water filtration company, Sofi Filtration, and US company Encotech, an environmental products and systems integrator, have partnered to combine Encotech’s cross-flow filtration system integration with Sofi’s advanced microfilter.

The system integration has sophisticated sensing and controls for determining the state of material fouling on a filter membrane, with automated operations that limit membrane fouling and automatically initiate intelligent processes to restore operating flux.

A pilot was recently completed at an energy facility in Denver Julesberg basin in Wyoming, in eastern Colorado. The facility takes trucks 24-hours a day from flow-back, drilling and produced water in the region and evaporates and injects it into a salt-water disposal well. During the three-day trail, a 0.5 micron was used as the water was expected to have very fine particles.

The operational flow was stable between 2 and 3 bbl/min with optimised flow closer to 3 bbl/min for a single 1.2m3. As many trucks were offloading to tanks directly connect to the filter apparatus, the quality varied so detailed, aggregate analytical information was not pursued. Instead, the project concentrated on filtration efficiencies and performance.

The full case study can be downloaded from the Sofi Filtration website.