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According to FDEP chapter 62-600.440 (4) (b) FAC, basic level disinfection is described as: correct answers A chlorine residual of 0.5 mg/L for 15 minutes at peak hourly flow FDEP chapter 62-604.550 (a) FAC, requires a wastewater spill shall be verbally reported to the state warning point no later than: correct answers 24hrs from discovery What is the 'rule of thumb' regarding pump packing? correct answers Never put rings of new packing over the old packing According to FDEP ch...

What is TCEQ doing to control, "point source" pollution in the Texas waterways? correct answers TCEQ approves permits for domestic wastewater plants and Permitting of industrial wastewater plants. Describe proper design of force main wastewater lines. correct answers Minimum two feet per second velocity, with the smallest pump operating alone. Minimum four inch diameter pipe, with 150 psi rating. What is Standard Dimension Ratio? correct answers Ratio of outside pipe diameter, (O...

What is the predominant organism in a healthy activated sludge treatment plant? A. Stalked ciliates B. rotifers C. nematodes D. amoebas correct answers A. Stalked Ciliates A composite sample must be? A. sporadically collected in the treatment plant B. taken at one time C. analyzed immediately D. representative and sub-samples time spaced over 15 minutes apart correct answers D. representative and sub-samples time spaced over 15 minutes apart What is the standard volume for a ...

An Imhoff cone is used to measure________solids. A. suspended B. colloidal C. volatile D. settleable correct answers D. settleable (Operation of Wastewater Treatment Plants, Volume 1 by Kenneth D. Kerri) A _____ flume is widely used for measuring wastewater flow. correct answers Parshall (Operation of Wastewater Treatment Plants, Volume 1 by Kenneth D. Kerri) Velocity of flow in a grit channel must be reduced to a range of ____ to _____ fps in order for grit to properly set...

What is the typical BOD removal efficiency in a primary clarifier? A) 10 to 15% B) 40 to 60% C) 20 to 50% D) 95 to 99% correct answers C) 20 to 50% (v.1 pg 129) What does the "F" in F/M ratio represent? A) The microorganism population in the aeration tank B) The amount of filamentous bacteria in the activated sludge process C) The MLVSS in the aeration tank D) The food for the microorganisms flowing into the aeration tank, in lbs/day correct answers D) The food for the mic...

Common Types Of Underdrain Systems are? correct answers Pipe Lateral Collectors Perforated Tile Bottoms Wheeler Filter Bottoms Porous Plate Bottoms False Floor Underdrain Systems What filter sytems require a gravel support bed to prevent sand and anthracite from flowing into the underdrains? correct answers Pipe Lateral Collectors Perforated Tile Bottoms Wheeler Filter Bottoms What is wash water through? correct answers A through placed above the filter media to collect the back...

in certain costal areas, intrusion of sea water in to groundwater basin is most commonly caused by? correct answers over pumping from the ground basin Riparian rights are acquired how? correct answers with title to land bordering surface water an underground layer of rock or soil that permeates the passage of water is called what? correct answers an aquifer the first priority, from a public health perspective, is the production of what? correct answers water that is drinkable and fr...

what is the reason for Wastewater to contain large amounts of sand gravel and grit correct answers storm events combined Wastewater is defined as correct answers sanitary Wastewater and stormwater runoff in general the solid content of Wastewater is about correct answers .1% what is the percentage of suspended solids in the total amount of solids correct answers 30% the percentage of dissolved solids in the amount of total solids is about correct answers 70% which type of org...

The first step in maintenance staff should take in properly locking and tagging out a piece of equipment is to correct answers alert the operator on duty When working in an area with two or more floor coverings, be sure that they are always correct answers Secured together When manually lifting any object be sure to correct answers keep it close to your body and use leg strength Oxygen deficiency becomes a concern when the oxygen level in a confined space is less than correct answer...

Primary Clarifiers correct answers In an activated sludge treatment system, primary treatment processes include the: Removal of Inorganic material from grit correct answers In a washing grit remover, the grit is moved slowly by screw conveyors up an inclined channel in order to? 90% or above correct answers An efficient primary clarifier is expected to remove ? of the influent settleable solids. Adequate DO at surface at all times correct answers Proper operation of a facultative po...