WASTEWATER
Effluent quality improves in lagoon systems that are operated in which configuration?
A. Parallel arrangement
B. Series arrangement
C. Anaerobic only
D. Aerobic only
Answer: B. Lagoons operated in series tend...
Entries Tagged Licensing Exam
Editorial
Exam Study Guide
WASTEWATERUsing the breakpoint chlorination method of ammonia removal, approximately how many parts of chlorine are needed to remove one part of ammonia?A....
Editorial
Exam Study Guide
WASTEWATERThe plant effluent coliform count fails to meet required standards for disinfection. The chlorine residual is normal. Inspection of the disinfectant supplies...
Editorial
Exam Study Guide
WASTEWATERThe use of which substance can be very effective for removing soluble organic contaminants if used in conjunction with coagulation, sedimentation, filtration...
Online Exclusives
Exam Study Guide: Falling Chlorine Residuals; and Total Trihalomethane Formation
Welcome back to TPO magazine's Exam Study Guide Series, which offers a pair of water/wastewater study questions with in-depth explanations of the answers. Last time, we...
Editorial
Exam Study Guide
WASTEWATERA rotating biological contactor (RBC) wastewater treatment plant experiences a utility power failure and standby power is unavailable. Local emergency management officials...
Editorial
Tune Up for Your Next Water or Wastewater Licensing Exam With These Sample Test Questions
WASTEWATER: Understanding hydrogen sulfideWhich statement about hydrogen sulfide is correct?A. Hydrogen sulfide causes corrosion due to the development of high pH conditions.
B....
Online Exclusives
Exam Study Guide: Bionutrient Removal Systems
When faced with a licensing exam, don't struggle with test anxiety! Use the question below and others from our Exam Study Guide series to properly...
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Exam Study Guide: Maximum Contaminant Levels
Maintaining your education is important, especially in a career that demands licensing exams. Prove you’re an expert operator by answering this question and others from...
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Exam Study Guide: Dealing with Nocardia Foaming
When faced with a licensing exam, don't struggle with test anxiety! Use the question below and others from our Exam Study Guide series to properly...
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Exam Study Guide: Activated Sludge Math
When faced with a licensing exam, don't struggle with test anxiety! Use the question below and others from our Exam Study Guide series to properly...
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Exam Study Guide: Filtration Rate Math Question
When faced with a licensing exam, don't struggle with test anxiety! Use the question below and others from our Exam Study Guide series to...
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Licensing and Training: Why Treatment Plant Operators Are Invaluable Assets to Municipalities
After traveling to Bermuda and the United Kingdom this year and seeing how those areas handle wastewater operator licenses, I’m beginning to...
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Exam Study Guide: Activated Sludge General Knowledge
When faced with a licensing exam, don't struggle with test anxiety! Use the question below and others from our Exam Study Guide series to properly...











