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Water Treatment
Conversions
41
Environmental Studies
12th Grade
07/09/2014
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Term
___ml = __gal
 Definition
3785ml = 1gal
Term
__ L = __gal
 Definition
3.785L = 1gal
Term
__grams = __ lb
 Definition
454g = 1lb
Term
__lbs = __ gal
 Definition
8.34lbs = 1gal
Term
__cf = __AF
 Definition
43,560cf = 1AF
Term
__gal = __ AF
 Definition
325,829gal = 1AF
Term
__MG = __gal
 Definition
1MG = 1,000,000gal
or
1E to 6th power
Term
__ ft = __ mile
 Definition
5,280 ft = 1 mile
Term
__sec = __ day
 Definition
86,400 sec = 1 day
Term
__ min = __ day
 Definition
1440 min = 1 day
Term
__ cf = __ cu yrd
 Definition
27 cf = 1 cu yrd
Term
__ mg/l = __%
 Definition
10,000mg/l = 1%
Term
*F -?
______________= *C
?
 Definition
*F - 32
_______________ = *C
1.8
Term
( ? x *C) + ? = *F
 Definition
(1.8 x *C) + 32 = *F
Term
1 ft of water = __ psi
or
psi = head, ft x ____ psi/ft
 Definition
1 ft of water = .433psi
or
psi = head, ft x .433psi/ft
Term
lbs force = (____) (D ft)2) x (____in)2)/(ft)2)psi
 Definition
lbs force = (.785) (D ft)2) x (144 in)2)/(ft)2)psi
Term
__ sq ft = __sq in
 Definition
1 sq ft = 144 sq in
Term
__ lbs = __ TON
 Definition
2,000 lbs = 1 TON
Term
__ mg/l = __ gpg

gpg is grains per gal
 Definition
17.1 mg/l = 1 gpg
Term
___ ml = ___ gram
 Definition
1 ml = 1 gram
Term
___ K. grains per cu ft
 Definition
20 K grains per cu ft
or
20,000 grains per cu ft
Term
Total hardness CALCIUM CARBONATE is calculated from the CALCIUM AND MAGNESIUM content.

(Ca, mg/l)(_____) + (Mg, mg/l)(_____) = Total Hardness mg/l
 Definition
(Ca, mg/l)(2.5) + (Mg, mg/l)(4.12)= Total Hardness mg/l
Term
Static Head = _____-______

Static Head = _____+______
 Definition
Static Head = Discharge Head - Suction Head

Static Head = Discharge Head + Suction Lift
Term
Friction Head is _____
 Definition
C factor rating of the pipe.
Term
Total Dynamic Head (TDH)

TDH = ____+____
 Definition
TDH = Static Head + Friction Head
Term
Water Horsepower

(TDH)(gpm)
Whp = ----------------
______ gal/min/ft
 Definition
(TDH)(gpg
Whp = ------------------
3960 gal/min/ft
Term
Break Horsepower

Whp
Bph ---------------
?
 Definition
Whp
Bhp--------------------------
Pump Efficiency%
Term
Motor Horsepower

Bhp
Mhp = --------------
?
 Definition
Bhp
Mhp = -------------------
Motor Efficiency%
Term
Wire to Water Efficiency = _____ x_____
 Definition
Water to Wire Efficiency = (Motor, % Efficiency x Pump, % Efficiency)
Term
Convert hp to kw
 Definition
1hp = .746kw
Term
Kilowatt Hour

Kwh = ( ? ) ( ? )
 Definition
Kwh = (Kw) (hours of operation)
Term
?
Detention Time -----------------
?
 Definition
Volume
DT = ---------
Flow

or

Vol.
DT = --------
Q
Term
Velocity Formula
 Definition
Q = AV

Flow = (Area)(Velocity)

Flow(ft)3)/sec = Area(ft)2) x Vel.(ft/sec)
Term
Area of a circle
 Definition
Area = (D)2) x .785
Term
Volume of a cylinder
 Definition
Vol. = (D)2) (.785) (H)
Term
Circumference of a circle
 Definition
Cir. = pi(D)
Term
Area of a cylindrical tank
 Definition
Area = pi (D)(H) + (D)2) (.785)

A, cylinder + A, circle
Term
Volume of a sphere
 Definition
pi.
Vol, s = -----(D)3)
6
Term
Area of a sphere
 Definition
A, s = pi (D)2)
Term
Area of a trapezoid
 Definition
w, top + w, bottom
A, t = ------------------ (H)
2
Term
Volume of a cone
 Definition
(D)2) (.785) (H)
V, c = -----------------
3
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