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Utilities Engineer

The City of Panama City Beach is hiring a Utilities Engineer. • Bachelor’s degree in Civil Engineering or related field. • Certification as an Engineer Intern or Professional Engineer in the state of Florida. • Ability to read and interpret construction plans and use engineering design/modeling software. • Possession or ability to readily obtain a valid driver’s license issued by the state of Florida. To apply, visit www.pcbfl.gov

City of Zephyrhills – Now Hiring for Multiple Positions! Wastewater Operators A,B,C Scada Specialist, Utility Service Workers, and Readers. Excellent Benefits and Retirement Plan. Access an Application/Submit Resume at: http://www.ci.zephyrhills.fl.us/jobs or reach our Human Resources Department at 813-780-0000, ext. 3522 or 3521.

Blue Planet Environmental Systems ................................................. 55 Carollo Engineers ............................................................................... 15 CEU Challenge .................................................................................... 28 Data Flow Systems ............................................................................. 49 Ferguson Waterworks......................................................................... 47 Florida Water Resources Conference ............................................... 11 FSAWWA 2022 Fall Conference ....................................................22-27 FWPCOA Training Calendar ............................................................... 50 Gerber Pumps ....................................................................................... 9 Heyward ................................................................................................. 2 Hudson Pump & Equipment ............................................................... 37 Hydro International ............................................................................... 5 InfoSence ............................................................................................. 52 Lakeside Equipment Corporation ........................................................ 7 Mead & Hunt ........................................................................................ 46 Polyprocessing ................................................................................... 33 UF TREEO Center ................................................................................ 41 US Submergent ................................................................................... 29 US Water Services Corporation ......................................................... 53 Water Treatment & Controls Technology .......................................... 18 Xylem .................................................................................................... 56 YSI ........................................................................................................ 19 1. C) interfere with the enjoyment of

life or property.

Per FAC 62-600.400(2)(a), Design Requirements, “New treatment plants and modifications to existing plants shall be designed and located on the site so as to minimize adverse effects resulting from odors, noise, aerosol drift, and lighting. The permittee shall give reasonable assurance that the treatment plant or modifications to an existing plant shall not cause odor, noise, aerosol drift, or lighting in such amounts or at such levels that they adversely affect neighboring residents, in commercial or residential areas, so as to be potentially harmful or injurious to human health or welfare or unreasonably interfere with the enjoyment of life or property, including outdoor recreation.”

2. B) hydrogen sulfide.

Per Advanced Waste Treatment, Chapter 1, Odor Control, Section 1.12, Hydrogen Sulfide Generation, “The main cause of most odors in wastewater systems is hydrogen sulfide. Hydrogen sulfide can be detected by the human nose at a concentration as low as 0.00047 parts per mil (ppm).”

3. D) mercaptans.

Per Advanced Waste Treatment, Chapter 1, Section 1.10, Biological Generation of Odors, “Examples of organic gases found around treatment plants are mercaptans, indole, and skatole. These odorous compounds contain nitrogen- or sulfurbearing organic compounds.”

4. B) chlorination.

Per Advanced Waste Treatment, Chapter 1, Section 1.40, Chemical Treatment of Odors in Wastewater, “Chlorination is one of the oldest and most effective methods used for odor control. . . Chlorine is a very reactive chemical and, therefore, oxidizes many compounds in wastewater.”

5. B) Holistic approach

Per EPA’s Biosolids Odor Control Fact Sheet, “The most successful odor control programs are those that take a holistic approach and examine the complete system, from sewer users to land application practices.”

6. C) examine the operation and

maintenance practices at the facility.

Per EPA’s Biosolids Odor Control Fact Sheet, “The most cost-effective approach to odor control may be to examine the operation and maintenance practices at the processing facility. Septic conditions may result in a biosolids product that is more offensive than necessary. Some polymers break down into odor-forming compounds under high heat and elevated pH. Incomplete anaerobic digestion can result in worse odors than no digestion at all. Blending of raw and waste-activated sludge (WAS) prior to liquid storage can result in higher concentrations of dimethyl sulfide.”

7. A) computerized air dispersion

model.

Per EPA’s Biosolids Odor Control Fact Sheet, “A computerized air dispersion model that addresses magnitude, frequency, and duration of events, and is calibrated and verified with onsite monitoring, can be an effective tool to predict the impact of odor emissions. This type of model may determine how much and what type of control will be necessary to prevent or minimize the impact. To accomplish this task with some certainty of success, a formal odor study should be commissioned.”

8. A) ammonia.

Per Advanced Waste Treatment, Chapter 1, Section 1.40, Chemical Treatment of Odors in Wastewater, “Advantages of hydrogen peroxide use include its effectiveness as an oxidant, its ability to inhibit the regeneration of sulfatereducing microorganisms, and the lack of toxic byproducts. Disadvantages of hydrogen peroxide include its inability to treat ammonia or odorous organics, the contact time required for effective odor control (15 minutes to 2 hours), and its high cost.”

9. B) Biofilters

Per EPA’s Biosolids Odor Control Fact Sheet, “Biofilters remove odors from a foul air stream by the adsorption and absorption of odor-causing compounds onto a natural media bed where microorganisms oxidize the compounds. The indigenous bacteria and other microorganisms of the media acclimate to the compounds present and are sufficient to provide the “scrubbing” action; no bacterial innoculation or chemical addition is required.”

10. C) masking.

Per Advanced Waste Treatment, “Odor masking is accomplished by mixing the odorous compound with a control agent. The masking agent or chemical has a stronger and supposedly more-pleasant odor quality which, when mixed with the odorous compound, results in a more-pleasant odor than the odorous compound.”