SUMMARY

Wastewater contamination poses a global public health threat. Despite efficient methods such as membrane filtration, UV treatment, and remineralization, fouling remains a significant problem. It involves the accumulation of particles on water treatment device surfaces or membranes. This fouling constrains treatment capacity and reduces operational efficiency.
Traditional cleaning techniques, like chemical and manual cleaning, hydro-blasting, and steam blasting, are only effective before a substantial decline in performance occurs. Hence, real-time monitoring is crucial to ensure optimal and cost-effective operation. Preceding monitoring, characterization is essential for understanding how deposited film impacts device performance. It aids in process optimization, maintenance planning, and addressing operational issues.
Currently, few inspection methods offer real-time monitoring and early fouling detection sensitivity. This thesis proposes early fouling detection using a non-linear ultrasonic method in water treatment devices. It also includes film characterization through surface acoustic waves to understand film morphology and material characteristics. The study explores integration possibilities with existing ultrasound-based water treatment devices to enhance fouling monitoring.
This thesis focuses on membrane filtration and heat exchanger devices, vital components in potable water production and treatment plants.