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Surface Water D questions and answers rated A+ 2024/2025
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Surface Water D questions and answers rated A+ 2024/2025
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Surface Water D325,851 - ANSIn Texas there are 207 Major reservoirs with a total capacity of 41.4 million
acre feet- how many gallons of water does each acre foot equate to?
15 - ANSAccording to the Texas Water Development Board there are ___ Major Texas
Rivers and Basins
The movement of water through evaporation, precipitation, percolation, & runoff - ANSWhen
referring to the Hydrologic Cycle, what is being discussed
turbidity - ANSThe velocity of water and the ease in which the channel is eroded will
influence the amount of ___ that must be removed in the treatment process
Reservoirs - because of natural sedimentation, clarification, & bacterial removal - ANSOf the
following which water source tends to be better quality and why
taste and odor - ANSIn Surface Water __ and __ can be traced to areas with decayed
vegetation, high concentrations of limestone, and high organic matter
public water system - ANSAny water system that provides the public with water for human
consumption or has 15 service connections or serves at least 25 individuals 60 days out of
the year is a
if the plant has continuous turbidity and disinfectant residual monitors, automatic shutdown
capabilities, and alarms to summon operators - ANSAll surface water plants MUST have
licensed surface water operator on duty when the plant is in operation - the exceptions would
be
cryptosporidium - ANS_____ is a disease causing pathogen that lives in the intestines of
animals and humans and is resistant to chlorine
1000 feet and 200 feet restricted radius - ANSIntakes for surface water plants should be __
feet from all boat ramps, docks, and piers, and should have a restricted zone of __ radius
around the intake.
anaerobic - ANSThermal Stratification causes the bottom layer of water in a reservoir to lose
oxygen which leads to ___ decomposition of organic matter
potassium permanganate - ANSWhen treating algae in reservoirs the chemical most
commonly used is Copper Sulfate - if Copper Sulfate proves ineffective, _____ is sometimes
used
reduce the silt loads on treatment facilities - ANSThe primary purpose of sedimentation
basins is to
, mixing - ANS_____ is the single MOST important aspect in the water treatment plant
pH - ANSThe single MOST important factor in coagulation effectiveness is
an increase in coagulant dosage - ANSVery fine suspended solids (low turbidity) will require
10 and 5 - ANSThe chemical dosage should be such that no concentration over __ NTU but
preferably as low as __ NTU shall go to the filter
diaphragm pump - ANSThe MOST common pump used in the chemical dosing process is
15 days of chemicals used - ANS290.42(f)(1)(A) - Storage facilities at the treatment plant
SHALL be adequate in size to store at least
the jar test - ANSThe single most widely used method of determine dosage and other
parameters in Surface Water Treatment is
a measure of the force preventing particles from joining - ANSThe term Zeta Potential is
defined as
right to know law - ANSThe Texas Hazard Communication Act of 1985 is also known as the
30 TAC Chapter 290 - ANSThe State of Texas regulatory authority is charged with enforcing
the rules and regulations associated with Surface Water Treatment, this specific rule
operators should be familiar with is known as
Paddle, Propeller, and Turbine - ANSThe three MOST common flocculators found in surface
water treatment are
correct stirring time, correct stirring intensity, uniform mixing, correct detention time -
ANSThe best floc formation is made possible by
divide the basin capacity in gallons by the flow into the basin in gpm - ANSIn surface water
treatment detention times are important so to be bale to calculate detention time the operator
would
sedimentation - ANSMOST of the turbidity in surface water is removed in which process or
phase of water treatment
taste and odor issues, decreased detention times, gas formation by re-suspended solids -
ANSSludge removal in the surface water treatment process is important because build up
will cause
sand particle size and filter bed depth - ANSOne of the MOST important factors in filter
design is
floc size and shape
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