Use this when sludge bulking, high svi and poor settleability is observed but the cause remains unclear. The diagnostic checks measurement and sampling, operating changes, issue location, and key evidence before suggesting likely causes and the next useful check.
First time here? Start with this
The system asks one discriminating question at a time and updates the candidate causes on the right. Answer from current facts; choose unknown or defer a question when the evidence is not available.
Check whether the symptom is reproducible and whether the measurement or observation is reliable.
Continue through operating changes; enter flow, pressure, or quality data for local calculations when available.
Candidate causes, numeric evidence, counter-evidence, conflicts, and next actions update as you answer.
This tool analyzes information you already have. It does not insert a safety screen or use safety status to stop the diagnosis. If an alarm, leak, or injury is happening now, follow the site emergency procedure directly.
Automatic troubleshooting · Selections are not uploaded
Only one question is shown at a time. Answer from current facts or defer an unknown item. Possible causes and next checks update on the right as you answer.
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Phase 1 · Data validity
The system asks the question most useful for separating possible causes. Unknown or deferred items are not treated as the opposite conclusion.
Numeric evidence · Local calculation
Choose a calculation relevant to the issue and enter values in the site units. The tool converts units, checks physical boundaries, and shows the result locally without an AI call or upload.
Values and results stay in this browser
v1.0.0
Calculates SVI from 30-minute settled volume in a 1 L mixed-liquor sample and same-batch MLSS.
Enter the required data for this calculation to see results.
Applies to an undiluted, well-mixed 1 L settling test paired with same-batch MLSS. High SVI is compaction/settling evidence and does not identify a filament or cause by itself.
Calculates absolute and relative change before interpreting a trend.
Enter the required data for this calculation to see results.
Both values must represent the same quantity, point, unit, time basis, and comparable operating condition. Relative percent change is meaningful only on ratio scales with a true zero; pH, Celsius/Fahrenheit temperature, and zero-crossing ORP need a suitable domain model or absolute differences only. Two points do not replace trend analysis or normalization.
Each rule cites material directly relevant to its judgment. Current OEM and site procedures remain controlling.