Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

TREATMENT 3 EXAM

List some oxidants used for controlling taste and odors Chlorine, potassium permanganate, ozone and chlorine dioxide
CT stands for this. RESIDUAL CONCENTRATION of a given disinfectant in mg/L times the disinfectant's contact time in minutes
What is fed before chlorination or upstream from the chlorine injection point. Polyphosphates
What safety precaution should be taken when accepting chemical deliveries? Inspect the driver's credentials
The most frequently taken test In the water industry is. Temperature
At the completion of titration what color should the water be? Blue
A plug valve is also called this. Ecclectic
The bottom of settling tanks are cleaned with these Chains, rakes and traveling bridges
A three phase motor runs on three wires using this type of current. AC or alternating current
What voltage is used by larger motors? 480 v with AC current
Gauges use these. Dampeners, snubbers and BAFFLES
Turbidity measurements are used to test these. Raw water quality and issues with coagulation, sedimentation and filtration
These regulations establish maximum contaminant levels Primary regulations
What is pH? The logarithm of the reciprocal of the hydrogen ion activity.
Define Anaerobic A condition in which atmospheric or dissolved oxygen is not present in Water
Define Eutrophic Lakes or reservoirs rich in nutrients and productive in plant and animal life
What is alkalinity? A measure of how much acid must be added to a liquid to lower the pH to 4.5
Define Amperometric Titration A means of measuring concentrations of certain substances in water (such as strong oxidizers) based on electric currents from chemical reactions
What are Chloramines? Compounds formed by the reaction of hypochlorous acid (or aqueous) chlorine with ammonia
What is short circuiting? A condition in a tank or basin where water flows nearly in a direct path from inlet to outlet
What is stratification?
Separate layers of temperature, plant and animal life.
Trihalomethanes MCL is? .08
What is the MCL for Lead? .015
What is the MCL for arsenic? .10
What is the MCL for mercury? .002
What is the MCL for haloacetic acid? .06
What is the MCL for flouride? 4 (2 secondary)
What is the MCL for Nitrates? 10
What is the MCL for manganese? .05
What is the MCL for asbestos? 7 million fibers per liter
What is the MCL for iron? .03
What is the MCL for copper? 1.3
Chlorine gas does this to pH levels. Lower them
Hypochlorite does this to pH levels. Increase them (or heightens them)
What is used to treat water for corrosion? Calcium carbonate so that it is saturated, slightly saturated or super saturated.
High levels of pH can cause this. A decrease in chlorination and coagulation efficiency
What is Copper Sulfate used for? Treating algea
What is used to regulate iron and manganese? SMCL Because they are naturally occurring minerals that don't pose a health threat
Which layer has the most significant temperature change in a stratified lake Thermocline {Epilimion - upper; Thermocline - middle and Hypolimion - lower}
What part of the Ejector creates the vacuum that moves the chlorine gas? The Venturi nozzle. Dampeners, snubbers???
What is the purpose of an Ejector (also called an eductor or injector)? To draw additional water for dilution of the hypochlorinator solution. NOT A RATE VALVE!!!
What are the main causes of taste and odors in a water distribution system. Microbial activity, disinfection residuals and their by products, organics and mineral compound from system materials and external contaminants from cross connections
What are the characteristics of surface water? Soft water, suspended solids, some color, microbial contaminants
What are the principal hardness causing ions in water? Calcium and magnesium
Created by: Cuda1964
Popular Engineering sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards