Read the symptoms. Reason to the correction. Answer what you actually see at the clarifier, the settleometer, and the basin — and learn which direction the fix runs, why, and what trap is waiting if you guess wrong.
This tool teaches the diagnostic reasoning tested on certification exams and used at real plants. It cannot see your plant. Verify every conclusion against your own data, your SOPs, your permit, and your supervisor before changing anything — and make process changes gradually, one variable at a time.
The number underneath almost every diagnosis above is sludge age. Practice the exam math with your own figures: inventory, current SRT, and the wasting rate a target SRT would require.
Every path in this tool comes from the WastewaterAce troubleshooting guides — young vs old sludge, pin floc vs stragglers, rising vs bulking, and the SVI ranges. The Complete Exam Guide turns the same logic into 200 practice questions.
Get the Complete Exam Guide — $17