Exam (elaborations)
Surface Water Treatment C license Questions & answers
- Course
- Institution
Surface Water Treatment C license Questions & answers
[Show more]
Seller
Follow
EXAMQA
Reviews received
Content preview
Surface Water Treatment: C licenseOne cubic foot of water contains ________ gallons - ANS-7. 48 gallons
In rain water reservoirs, the most common effect of aeration is ... - ANS-Removal of
taste and odors
The sand filter will NOT remove ... - ANS-Dissolved Oxygen
The multiple-tube fermentation test consists of three distinct tests. These tests in the
order performed, are ... - ANS-Presumptive test
Confirmed test
Completed test
If using the combined available chlorine residual (CACR) method of disinfection: -
ANS-When water temperature decreases, the CACR must be increased in order to
maintain proper chlorine residuals.
Most surface water in TX comes from... - ANS-Precipitation that falls within the state
Sedimentation is improved by...
U H L V flow through basin - ANS-Uniform, Horizontal, Low Velocity flow, across the
basin
A chemical commonly used to raise pH is... - ANS-Lime (Soda Ash)
The pH scale run from _______ to ______ - ANS-0 - 14
If sludge remains to long on the bottom of a sedimentation basin problems that could
develop are... - ANS-Taste and odors problems
reduction of detention Time in basin
re-suspension of Solids
creation of Septic conditions
The chemical name for muratic acid is... - ANS-Hydrochloric acid
According to average annual water budget for TX, the majority of surface water leaves
the state by...
, ________ & _______ - ANS-Evaporation and Transpiration
A major cause of pump and motor shaft coupling wear is a... - ANS-Misalignment
between, pumps and motor flanges
When opening and closing valves in high pressure lines the valves should be closed
how? - ANS-Slowly
Chlorine valves are opened and closed with what? - ANS-Valve wrenches provided with
a cylinder or 1 - ton container by the manufacturer
Leakage from a packing gland should be approximately... - ANS-one drop per second
What is the MGD of the flow in 35,000 gallons per day - ANS-0.035 MGD
When a coagulant reacts with finely divided and suspended material in raw
water______ is formed. - ANS-Floc
A chlorine residual in water can be determined by using the reagent... - ANS-DPD
diethyl-p-phenylenediamine
The most important factor affecting the useful life of piping is the ability of that piping to
resist what? - ANS-Internal and external Corrosion
A pH reading of 6.0 in raw water indicates the sample is ... - ANS-Acidic
What does water weigh, in terms of pounds per gallon? - ANS-8.34 pounds per gallon
Which one of the following types of meters has no moving parts?
-propellar
-proportional
-rotometer
-venturi - ANS-Venturi
The loss-of-head through a sand filter is influence by... - ANS--sand particle size
-filtration rate
-water temperature
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 EXAMQA. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.39. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
84866 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now