Operators: Take the CEU Challenge!

Members of the Florida Water and Pollution Control Operators Association (FWPCOA) may earn continuing education units through the CEU Challenge! Answer the questions published on this page, based on the technical articles in this month’s issue. Circle the letter of each correct answer. There is only one correct answer to each question! Answer 80 percent of the questions on any article correctly to earn 0.1 CEU for your license. Retests are available. This month’s editorial theme is Disinfection and Water Quality. Look above each set of questions to see if it is for water operators (DW), distribution system operators (DS), or wastewater operators (WW). Mail the completed page (or a photocopy) to: Florida Environmental Professionals Training, P.O. Box 33119, Palm Beach Gardens, Fla. 33420-3119. Enclose $15 for each set of questions you choose to answer (make checks payable to FWPCOA). You MUST be an FWPCOA member before you can submit your answers!

EARN CEUS BY ANSWERING QUESTIONS FROM PREVIOUS JOURNAL ISSUES! Contact FWPCOA at membership@fwpcoa.org or at 561-840-0340. Articles from past issues can be viewed on the Journal website, www.fwrj.com.

Model-Predictive Ammonia Control Saves Energy and Improves Water Quality

Alex Ekster (Article 1: CEU = 0.1 WW02015421)

1. Optimization and precise control of sludge age reduced polymer usage by more than a. 25 percent. c. 50 percent. b. 40 percent. d. 60 percent. a. eight c. 10 b. nine d. 11

2. After the installation of the automated solids retention time (SRT) control system, the SRT set point was eventually maintained at ______ days.

3. The Chico plant is currently staffed a. 16 hours a day. b. by three to four operators. c. seven days a week. d. entirely remotely.

4. The application of air to the plant’s aerobic tanks is controlled by a. manually actuated ball valves. b. electrically actuated globe valves. c. electrically actuated butterfly valves. d. Venturis. a. DO/Nmaster c. GPS-X b. SRT Master d. waste control

5. A data verification block within the __________ algorithm automatically alerts operators when either aeration basin sludge inventory or flow mass exhibits significant deviation from normal.

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Holistic Approach to Optimize Water Quality From Treatment to Tap

Brandon Bryant, Tom Stangle, Kathy Traexler, Chad Meisel, and Edward H. Talton Jr. (Article 2: CEU = 0.1 DW/DS02015422)

1. Elemental sulfur particles are undesirable in potable water systems as they can lead to a. corrosion problems. c. black water issues. b. red water issues. d. nitrification. a. water age c. pipe size b. pH d. distance from the point of disinfection a. Ozonation c. Volatilization of disinfection byproducts b. Granular activated carbon d. Ultraviolet light a. booster pumping capacity b. inlet and discharge pipe size c. valve placement d. 4-log virus inactivation requirements a. Residual chlorine exceeding 0.2 milligrams (mg) per liter b. Water age not exceeding 12 hours c. TTHM not less than 80 mg per liter d. Haloacetic acid not exceeding 80 mg per liter

2. To expedite model simulations, ____________ was used as a surrogate for total trihalomethane (TTHM) and chlorine residual.

3. Which of the following is not listed as a treatment technology to control high total organic carbon?

4. Optimizing water storage tank levels can benefit system water quality, provided that _______________ allow(s) for such optimization.

5. The model simulations were established to predict water quality meeting which of the following criterion?