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CLASS B SURFACE WATER OPERATOR EXAM
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CLASS B SURFACE WATER OPERATOR EXAM
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CLASS B SURFACEWATER
OPERATOR EXAM
Identify the parameters of concern for source water improvements.
1. solids/ turbidity-measure of matter in water
2.temperature-affect on water density
3.color, taste, and odor-microorganisms produces metabolites like Methylisoborneol
(MIB) and Geosmin.
Watershed->NOM->TOC that include humic and fulvic acid
4.nitrogen and phosphorus nutrients- cause microorganism to grow and they come from
septic systems, wastewater plants discharge, farm runoff...
5.organic carbon- 2 groups: NOC and SOC/VOC
natural organic carbon (NOM): include fulvic and humic acid that come from rock
formation.
synthetic organic carbon and volatile organic carbon (SOC/VOC): come from industrial
and chemical waste
6.microbial pathogens- contaminates such as GIARDIA and CRYPTOSPORIDIUM.
present in rivers and streams are caused by septic systems, wastewater plants
discharge, farm runoff...
a + fecal coliform test mens the contaminates are present
7.metals-can be toxic and bio-accumulative., regulated by the SWDA that sets the Max.
Contaminant Level (MCL).
, 8.oil and grease-prevent oxygen from dissolving in water
9.dissolved oxygen- lack of oxygen in water, hydrogen sulfide and sulfur are present &
causes iron and manganese to be released causing taste and odor problems
Describe source water improvement methods
reservoirs- have slow movement which allows solids to settle
aeration- saturate water with oxygen.
oxidizes iron and manganese, remove dissolved gases, cools hot water...
reservoir destratification- remove temperature layers.
TRUE OR FALSE: copper sulfate effectively controls all types of algae at low doses
False, dose depends on water temperature
Solids and turbidity come from urban runoff, streambank erosion, agricultural runoff, and
______.
a. point sources
b. stack emissions
c. treatment sludge
d. algae
Algae
Sources of nitrogen and phosphorus are septic systems, landfill leachate, urban and
agricultural runoff, animal feed lots, and _______.
a. the air
b. wind
c. sunlight
d. all listed
The air
Some metals are removed by ______ and ______.
a. screening, filtration
b. coagulation, adsorption
c. coagulation, screening
d. aeration, adsorption
Coagulation and absorption
Reservoirs provide a quiet zone of _______ for sedimentation
a. no movement
b. wave action
c. wind currents
d. slow movement
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