The intake air filter on an aeration blower at most ETPs and STPs gets replaced on a fixed calendar interval, every month, every quarter, whatever the maintenan..
A flow meter's calibration certificate at most ETPs and STPs gets checked once, usually at or near the meter's rated full-scale flow, verified against a referen..
5 min readA reinforced concrete underground or partially buried tank at an ETP or STP, an equalization basin, a clarifier, a wet well, gets its structural design checked ..
5 min readMost operators running an activated sludge process, the biological core of most ETPs and STPs built around this process, track the food-to-microorganism ratio, ..
5 min read
A Motor's Insulation Resistance Test Can Pass Every Year and Still Be Telling You It Is About to Fail · 5 min read 
A ZLD Business Case Can Balance on Water and Still Never Balance on the Salt It Leaves Behind · 5 min read 
A Fixed Polymer Dose Rate Can Look Perfectly Stable and Still Be Wrong Most of the Time · 5 min read 
A Plant's SCADA System Can Get Every Alarm Individually Right and Still Fail at the One Thing Alarms Are For · 5 min read 
A Clarifier Can Pass Its Surface Overflow Rate Calculation and Still Lose Solids Through One Stretch of Weir · 6 min read 
A Grit Chamber Can Satisfy Its Detention Time Calculation and Still Never Remove the Grit · 6 min read Loading...
