Site Map
Learn
- Learn Wastewater Process Control
- Activated Sludge Basics
- Aeration
- Biological Nutrient Removal (BNR)
- Biological Treatment
- Denitrification
- Disinfection
- Interactive Process Map
- Microscopy for Operators
- Nitrification
- Preliminary Treatment
- Primary Treatment
- RAS and WAS
- Secondary Clarifiers
- Solids Handling
Troubleshoot
- Troubleshooting Center
- Effluent TSS High
- Excessive DO and High Blower Demand
- Filamentous Bulking
- High Effluent Ammonia (Loss of Nitrification)
- High SVI
- Increasing Clarifier Blanket
- Low Alkalinity
- Low DO in the Aeration Basin
- Pin Floc
- Poor Oxygen Transfer
- RAS Problems
- Rising Sludge (Denitrification in the Clarifier)
- Solids Washout and Hydraulic Overload
- Stable Brown Foam
- Straggler Floc
- Temperature Effects
- Toxic Upset Recognition
- Troubleshooting Matrix
- White Foam
Calculators
- SVI Calculator
- Wastewater Calculators
- 4-20 mA Signal Converter
- Aeration Basin Loading Calculator
- Alkalinity for Nitrification Calculator
- Ammonia Loading Calculator
- BOD Loading Calculator
- Chemical Feed Calculator
- Chlorine Dose Calculator
- Clarifier Surface Overflow Rate Calculator
- DO Saturation and Sensor Check
- Detention Time Calculator
- F/M Ratio Calculator
- Flume and Weir Flow Calculator
- Instrument Accuracy and Calibration Check
- MLSS Inventory Calculator
- Mag Meter Velocity Calculator
- Oxygen Requirement and Air Calculator
- Oxygen Uptake Rate (OUR) Calculator
- Polymer Dose Calculator
- Pounds Loading Calculator
- Pressure Unit Converter
- Pump Affinity Laws and VFD Speed
- Pump Calculations
- RAS Flow Calculator
- SOUR Calculator
- SRT and MCRT Calculator
- Sludge Age Calculator (Gould)
- Solids Loading Rate Calculator
- State Point Clarifier and RAS Tool
- Tank Level, Volume and Hydrostatic Pressure
- Three-Phase Motor Power Calculator
- Unit Conversions
- Volatile Solids Reduction Calculator
- WAS Rate Calculator
- Weir Overflow Rate Calculator
- pH Electrode Slope and Buffer Calculator
Microscopy
- Microscopy Guide
- Amoebae
- Dispersed Growth
- Filamentous Organisms
- Flagellates
- Floc Structure
- Free-Swimming Ciliates
- Identify What I'm Seeing
- Microscopy Illustrations
- Microscopy Photo Gallery
- Nematodes
- Rotifers
- Stalked Ciliates
Articles
- Operator Articles
- How Do I Calculate Sludge Age?
- How Do I Know If I'm Wasting Too Much Sludge?
- How Do I Read My Microscope Slide?
- How Do I Run a Settleometer Test?
- How Much Air Does My Aeration Basin Need?
- How Much RAS Should I Return?
- What Causes Rising Sludge in a Secondary Clarifier?
- What Does Brown Foam Mean in an Aeration Basin?
- Why Is My Effluent Ammonia High?
- Why Is My SVI Increasing?