Water Treatment Practice Exam #2| 85 questions| with complete solutions
5 views 0 purchase
Course
Water Treatment
Institution
Liberty University
What is a pathogen? Correct Answer: Disease-causing microorganisms.
What is the impact of algae to water quality? Correct Answer: Taste and odor problems.
What is the concentration of chlorine gas? Correct Answer: 100%.
Which of the following is not used to mix coagulants? Correct Answe...
water treatment practice exam 2| 85 questions| with complete solutions
Written for
Liberty University
Water Treatment
All documents for this subject (7)
Seller
Follow
Classroom
Reviews received
Content preview
Water Treatment Practice Exam #2| 85 questions|
with complete solutions
What is a pathogen? Correct Answer: Disease-causing microorganisms.
What is the impact of algae to water quality? Correct Answer: Taste and odor problems.
What is the concentration of chlorine gas? Correct Answer: 100%.
Which of the following is not used to mix coagulants? Correct Answer: Horizontal paddle
wheel.
What is considered to be a quick remedy to adress a sudden increase in filtered water turbidity?
Correct Answer: Feed a filter-aid chemical to the filter influent.
What is the likely cause of a pinping noise in a pump? Correct Answer: Cavitation
Which of the following controls the efficiency of removing suspended solids in the
sedimentation process? Correct Answer: Flowrate
What is a sanitary survey? Correct Answer: An analisis to determine all potencial water quality
impacts to a proposed well.
Which of the following categories does bacterial belong to? Correct Answer: Colloidal
Under the Surface Water Treatment Rule, what must the reduction of viruses be through
filtration and disinfection? Correct Answer: 99.99%
Which of the following is not considered free residual chlorine? Correct Answer:
Monochloramine
Why is coliform used as a indicator organism? Correct Answer: It reduce the complexity and
cost of analysis.
What is an example of a non-community, non-transient water Correct Answer: School.
What is the purpose of a packing in a pump? Correct Answer: Control the leakege of water
along the pump shaft and prevent air from entering along the shaft when the pump is in a suction
lift condition.
What does the addition of carbon dioxide do to the pH of water? Correct Answer: Lowers it.
What is an unconfined aquifer? Correct Answer: One in which groundwater posseses a free
surface open to the atmosphere.
, What is static water level in a well? Correct Answer: Water level when pump is not running.
Which of the following Will least likely impact the formation of flocs during the coagulation and
flocculation process? Correct Answer: Hardness.
What is formed when free chlorine reacts with ammonia? Correct Answer: Chloramine.
Which contaminant causes Blue Baby Syndrome? Correct Answer: Nitrate.
What is free chlorine? Correct Answer: The concentration of residual chlorine in water which is
present as dissolved gas (CL2), hypochlorous acid (HOCI), and/or hypochlorite ion (OCI).
What is a thermocline? Correct Answer: A thin but distinct layer in a reservoir in which
temperature changes more rapidly with depth than it does in the layers above or below.
What agency protects the health and safety of industrial employees? Correct Answer: OSHA
What is the first priority in water treatment? Correct Answer: Production of safe drinking water.
What is the health effect of consuming water with high levels of lead? Correct Answer:
Cardiovascular effects, increased blood pressure and incidence of hypertension.
What is an imaginary surface to which ground water rises under hydrostatic pressure in Wells or
springs? Correct Answer: Piezometric surface
What is used to evaluate new coagulants or polymers being considered for use at the plant?
Correct Answer: Jar Test.
What are the 4 zones in a clarifier? Correct Answer: Inlet, Outlet, Settling, Sludge.
Which type of filtration process is approved by the Surface Water Treatment Rule? Correct
Answer: Conventional water treatment.
Which of the following impacts the color of source water? Correct Answer: Organics, such as
soil and leaves.
Coliform is most likely to be found in which of the following water supply? Correct Answer:
Lake.
What is the amount of water that can be withdrawn tion an aquifer whitout significant
environmental impact? Correct Answer: Safe yield.
pH will increaseif the following chemical is added to water. Correct Answer: Ammonia.
Which of the following is an unstable form of disinfection? Correct Answer: Ozonation.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Classroom. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.49. You're not tied to anything after your purchase.
