Research

Membrane processes play a critical role in advanced drinking water treatment; however, long-term stable operation is often challenged by membrane fouling, pressure increase, performance decline, and frequent cleaning cycles. Our research aims to enhance both membrane performance and operation & maintenance (O&M) efficiency to ensure sustainable and reliable system operation.                                       Specifically, we investigate (1) fouling mechanisms and accumulation behavior under varying operational conditions, (2) optimization strategies for operating parameters such as flux, pressure, and recovery rate, and (3) advanced cleaning protocols (e.g., CIP and CEB) to improve cleaning efficiency and membrane lifespan. By integrating process data analysis with system-level optimization, we develop practical operational guidelines that enhance stability, cost-effectiveness, and long-term performance in real-world treatment facilities.

In both reverse osmosis (RO) desalination and membrane-based wastewater reuse systems, fouling control and cleaning efficiency are key determinants of performance and sustainability. Our research focuses on improving system recovery, energy efficiency, and operational stability through advanced fouling management and optimized cleaning strategies.

We evaluate various fouling types—including organic fouling, inorganic scaling, and biofouling—and design targeted cleaning approaches to maximize performance recovery while minimizing chemical and energy consumption. The ultimate goal is to establish robust operational and cleaning guidelines that ensure high effluent quality, reduced operational costs, and long-term system reliability.

In addition to process engineering, our laboratory develops functional environmental materials within a circular economy framework. We explore the utilization of waste-derived calcium carbonate (CaCO₃), combined with surface functionalization such as alginate coating, to enhance the adsorption and removal of atmospheric ammonia (NH₃).

Furthermore, rather than treating the resulting byproducts as waste, we investigate pathways for recycling them into cement and construction-related applications. This integrated approach aims to simultaneously reduce environmental pollution and promote resource circulation through practical and scalable material solutions.