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More Water Math Problems & Charts

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What is the Langlier Index if the pHA is 9.2 and the pHS is 8.6?  Is this stable, depositing or corrosive?

 

If the P alkalinity is 0 mg/L and the T alkalinity is 100 mg/L, calculate the following:

  • Bicarbonate alkalinity

  • Carbonate alkalinity

  • Hydroxide alkalinity

 

If the P alkalinity is 35 mg/L and the T alkalinity is 60 mg/L, calculate the following:

  • Bicarbonate alkalinity

  • Carbonate alkalinity

  • Hydroxide alkalinity

 

120 mg/L of Ca as Ca is equivalent to ______ mg/L of Ca as CaCO3

 

If you are removing 300 mg/L of hardness and your flow is 2 mgd, how many pounds of hardness are you removing?

 

You are adding 6 lbs/day of chlorine gas to a flow of 277 gpm and your total chlorine residual is 1.5 mg/L. What is your chlorine demand in mg/L?

 

Click on the thumbnail below for a chart of pump station math for cylindrical tanks and have some fun!!!

 

Click on the thumbnail below for a chart of pump station math for rectangular tanks and have some fun!!!

 

Click on the thumbnail below for a chart of pipe math and have some fun!!!

 

Match
1 The units for pressure are A Divided by
2 Head is expressed in B 2.31
3 Velocity is measured in C 0.434 psi
4 Units of flow D psi
5 Pressure times _______ = Head E fps
6 Head __________ 2.31 = Pressure F 1440
7 20 psi =  G 694 gpm
8 1 MGD =  H cfs
9 A head loss of 7 feet = I 3 psi
  J Times
  K ft
  L 46.2 ft
  M Subtracted by

 

The formula for the volume of a rectangular tank is

A.  (Length)(Width)

B.  (0.785)(Diameter2)

C.  (Length)(Width)(Height)

D.  (0.785)(Diameter2)(Height)

 

The formula for the volume of a cylindrical tank is

A.  (Length)(Width)

B.  (0.785)(Diameter2)

C.  (Length)(Width)(Height)

D.  (0.785)(Diameter2)(Height)

 

Given a tank measures 50 feet long, 25 feet wide, and 15 ft deep, calculate:

  • Surface area in ft2
  • Cross-sectional area in square feet
  • Volume in cf
  • Capacity in gallons

 

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