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 Water Treatment. 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.

Article 1 ____________________________________

LICENSE NUMBER for Which CEUs Should Be Awarded

Article 2 ____________________________________

LICENSE NUMBER for Which CEUs Should Be Awarded

Article 3 ____________________________________

LICENSE NUMBER for Which CEUs Should Be Awarded

If paying by credit card, fax to (561) 625-4858 providing the following information:

(Credit Card Number)

(Expiration Date)

Case Study to Reduce Lead and Copper Corrosion Through Water Quality Optimization and Control of Nitrification

Richie Angley, GJ Schers, Peter Davis, and Rich Giani (Article 1: CEU = 0.1 DW/DS02015412)

1. In combination with the recarbonation system, the new ___________ chemical feed system mitigated calcium carbonate filter precipitation and increased finished water alkalinity. a. sodium hydroxide b. calcium hydroxide c. calcium bicarbonate d. magnesium hydroxide

2. A 2016 Water Research Foundation study demonstrated that iron has the affinity to absorb a. lead. b. copper. c. manganese. d. arsenic.

3. Calcium carbonate precipitation potential values between ___________ mg/l as CaCO3 will cause a light noticeable scale to form. a. 1 and 4 b. 5 and 10 c. 11 and 15 d. 16 and 20

4. Manganese can cause the same type of discolored water event at concentrations _____ times lower than iron. a. 2 b. 2.5 c. 4 d. 4.5

5. _____________ is the natural ability of the water to maintain a stable pH throughout the distribution system. a. Alkalinity b. Hardness c. Buffer intensity d. Langelier Saturation Index

Integration of a Distribution System Tracer Study Into a Water Quality Model to Control Disinfection Byproducts in a Potable Water System

Greg Taylor, Benjamin Yoakum, and Curtis Wade (Article 2: CEU = 0.1 DW/DS02015413)

1. The tracer used in this study was a. food grade dye. b. sodium chloride. c. potassium bromide. d. sodium hypochlorite.

2. Which of the following is not identified as an effective treatment technique for reducing natural organic matter? a. Stripping b. Granular activated carbon c. Ion exchange d. Membrane treatment

3. Results of the tracer study indicated that free chlorine residual in the University of Central Florida (UCF) system decayed to the regulatory minimum in approximately _____ hours. a. 12 b. 24 c. 36 d. 72

4. The regulatory maximum contaminant level (MCL) for total trihalomethanes (TTHMs) is _____ parts per billion. a. 40 b. 60 c. 80 d. 100

5. Which of the following was not among the recommended improvements to reduce TTHMs? a. Change disinfectants b. Additional autoflushing stations c. Add treatment process to reduce precursors d. Construct additional distribution system loops