C&EE 255A · CEE 255APhysical and Chemical Processes for Water and Wastewater Treatment
Civil and Environmental Engineering · 4 units · Graduate courses (200-299)
Review of momentum and mass transfer, chemical reaction engineering, coagulation and flocculation, granular filtrations, sedimentation, carbon adsorption, gas transfer, disinfection, oxidation, and membrane processes.
Letter grading.
When it runs
- Winter 2026
- Winter 2027
Scheduled, not typical — from UCLA’s Schedule of Classes, which publishes Fall 2025 through Spring 2027 and nothing before it.
Requisites
Official UCLA wording
Requisites: courses 155, 254A.
Requires
Everything that has to come before this course, not just the courses named in the requisite above.
C&EE 255A
- C&EE 155Unit Operations and Processes for Water and Wastewater Treatment
- C&EE 153Introduction to Environmental Engineering Science
- C&EE 254AEnvironmental Aquatic Inorganic Chemistry
- CHEM 20BChemical Energetics and Change
- MATH 31ADifferential and Integral Calculus
- MATH 1Precalculus
- PHYSICS 1APhysics for Scientists and Engineers: Mechanics
- MATH 32ACalculus of Several Variables
- MATH 31BIntegration and Infinite Series
- PHYSICS 1BPhysics for Scientists and Engineers: Oscillations, Waves, Electric and Magnetic Fields
- MATH 32BCalculus of Several Variables
2 direct requisites. Showing 25 courses over 3 levels; the branches marked with a count carry on past it. Every course here opens its own tree.
Unlocks
What this course is a requisite for, and what those courses lead to in turn.
C&EE 255A
- C&EE 255BBiological Processes for Water and Wastewater Treatment
- C&EE 261BAdvanced Biological Processes for Water and Wastewater Treatment
- C&EE 261Colloidal Phenomena in Aquatic Systems
- C&EE 261AAdvanced Water Treatment Processes
3 courses list this as a requisite. The whole downstream is here — 4 courses over 2 levels. Every course here opens its own tree.