Rules of Thumb (ROT)

Actual vs. Wahlberg-Predicted RAS TSS

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State Point Analysis

With just six data inputs, state point analysis (SPA) would seem to provide a simple mathematical model for evaluating clarifier performance. But in fact, the graphical output of SPA does require careful review and interpretation.

Before going through the specifics of SPA I’d like to quote from an excellent textbook...

October 24, 2016

Primary and Secondary Clarifiers

This page provides information on the expected performance of primary and secondary clarifiers. Removal efficiencies, detention times, and other parameters have been summarized to provide a handy reference. Of course, every wastewater plant is different, with potentially vast differences between municip...

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