Improving Membrane Treatment Energy Efficiency through Monitoring the Removal of Colloidal Particle Foulants
Measuring Colloidal Particles Prior to Membrane Treatment Can Reduce Energy and Cost for Water Reclamation
Project is complete. Results indicate that the fouling potential for the microfiltration (MF) membranes tested at Orange County Water District (OCWD) was mitigated through use of targeted chemical addition. Test results show that fouling is reduced by 60% compared to the no coagulant addition. Energy and economic evaluation at OCWD indicated that the approach can reduce energy consumption due to MF by 28% and can result in 2,940 MWh/year savings. OCWD staff has made internal presentation of the project findings to its management. Recipient has presented the project results at five conferences attended by water/wastewater treatment plant staff, regulators and vendors. This project will be published in 'Water World'; either as a podcast/article.
The project demonstrated an online monitoring technology for wastewater treatment plants to directly measure colloidal particle concentrations in order to lower membrane fouling and reduce energy use and maintenance costs. Direct detection of colloidal particles will help determine the optimal pretreatment needed to minimize deposition of colloidal particles in membrane pores.
The project reduced the frequency of cleaning and membrane replacement, energy use, and wastewater treatment plant operating costs by reducing the build-up in membrane pores and removing colloidal particles in the feed water duri
Key Project Members
Southern California Edison Company
Orange County Water District
West Basin Municipal Water District
Evoqua Water Technologies