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 Wastewater 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. 334203119. 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: CEU = 0.1 WW02015394)
1.
Grit load is known to be greatest during a. low flow. b. cold weather. c. dry weather. d. peak flow.
2. W hich of the following was not identified as a contributor to the structural deterioration of the headworks? a. High velocity flow b. High hydrogen sulfide c. Exposure to salt air d. PVC liner failure 3. Th e grit characterization study revealed that the majority of the grit entering the plant is classified as a. silt. b. fine. c. large. d. gravel. 4. Th e screen capture ratio is defined as the weight of solids captured on each sieve divided by the total _________________ in the waste stream. a. dissolved solids b. suspended solids c. weight of solids d. v olatile 5.
The plant’s existing step screen achieves poor capture because a. the pore openings are too small. b. it allows the screenings mat to be disturbed. c. hydraulic overload results in frequent bypass. d. the flow channel is too small.
SUBSCRIBER NAME (please print)
Article 1 ____________________________________ LICENSE NUMBER for Which CEUs Should Be Awarded
Article 2 ____________________________________ 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)
To Expand or to Intensify? Chattanooga’s Digestion Question
A Holistic Approach to Headworks Design: A Case Study of the St. Augustine Wastewater Treatment Plant No. 1 Headworks Rehabilitation Steve Curmode, Ed Fernbach, Yanni Polematidis, and Chris Cerreta
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Nicole Stephens, Jeffrey Rose, Stephanie Kopec, Harold Schmidt, and Sudhakar Viswanathan (Article 2: CEU = 0.1 WW02015395)
1. Th ermal hydrolysis process requires a temperature of ______ degrees centigrade. a. 1 60 to 165 b. 180 to 185 c. 1 90 to 200 d. 2 00 to 210 2.
A t this facility, secondary waste activated sludge is stabilized by a. h eat processing. b. lime addition. c. v acuum assisted presses. d. a eration.
3. Th is facility’s secondary treatment process is not expected to effectively handle increased ammonia generated by the recommended process because a. i ts historic performance indicates that this will be a problem. b. it lacks hydraulic capacity. c. t he process is not designed to reduce ammonia. d. a mmonia loading is expected to increase by a factor of 20. 4.
W hich of the following is not listed as a selected process? a. L ower digester operating temperature b. Produces Class A biosolids c. I mproved dewaterability d. I ncreased biogas production
5. C onventional digesters cannot operate at the projected high organic and hydraulic loading rates due to a. e xcessive cost. b. a heat requirement beyond that which is practical to apply. c. i nsufficiently viscous sludge. d. a mmonia toxicity.
Florida Water Resources Journal • January 2022
19
