This technology is a membrane fouling reduction water treatment device that attaches porous conductors, such as nickel foam, to both sides of a separation membrane like a ceramic membrane. By applying DC power, the microbubbles generated at the electrodes physically detach contaminants from the membrane surface.
In long-term membrane water treatment processes, organic matter and fine particles in the raw water adhere to the membrane, forming a cake layer that clogs pores and reduces permeation rates and treatment performance. While applying a conductive coating to the membrane surface has been proposed as a solution, it requires high voltage because the membrane is non-conductive, and if the coating is damaged, the entire long-lasting ceramic membrane must be replaced.
This technology consists of a module body equipped with a raw water inlet, a product water outlet, and a treated water outlet, housing the separation membrane along with first and second porous conductors. Microbubbles generated by the DC power supply detach contaminants, which are then flushed out with the treated water. Oxidants generated between the two conductors oxidize and remove organic matter from the raw water and the membrane surface. Applicable to water treatment plants using ceramic microfiltration, industrial wastewater facilities, seawater desalination pretreatment, and high-turbidity water treatment lines with short cleaning cycles, it allows for separate replacement of electrodes and membranes while maintaining high permeation performance with low power consumption.
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