CWEA Advanced Water Treatment Practice Test 2026 – Complete Exam Prep Resource

Membrane filtration processes rely heavily on the unique properties of membranes to separate particles and solutes from liquids. This method uses semi-permeable membranes, which allow certain substances to pass through while blocking others based on size or charge.

In membrane filtration, various techniques such as microfiltration, ultrafiltration, nanofiltration, and reverse osmosis utilize membranes tailored for specific applications, such as removing suspended solids, microorganisms, organic compounds, and salts. The efficiency of these processes makes them essential in advanced water treatment, especially for producing high-quality water for drinking or industrial use.

In contrast, chemical coagulation involves adding chemicals to water to clump impurities together, physical sedimentation relies on gravity to settle particles, and thermal distillation uses heat to separate components based on their boiling points. None of these methods involve membranes as a critical component in the same way that membrane filtration does.