Why UV-Absorbance for COD? Chemical oxygen demand has historically been measured by sealed reflux digestion with potassium dichromate and sulfuric acid followed by titration or colorimetry — a multi-hour laboratory workflow (the standard dichromate method takes roughly two hours of digestion alone, per SM 5220 D / EPA 410.4; note that the familiar “five-day” test…
Pain Point 1: Wildly Fluctuating COD Load Landfill leachate concentration is not steady. A young landfill in a wet climate can present raw leachate COD in the tens of thousands of mg/L, and the load can swing by a factor of several across a wet week, driven by rainfall, waste age and internal biological activity….
The Short Version: – Well-optimized electrochemical treatment systems can run at <2 kWh/m³ while holding >95% removal of target organic pollutants – Energy is the largest operating cost in electrochemical treatment—commonly half or more of total operating expense—which is exactly why it rewards optimization – Electrode material choice and pulsed power operation each contribute meaningful…
