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

gpg is grains per gal

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

(Ca, mg/l)(_____) + (Mg, mg/l)(_____) = Total Hardness mg/l

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

Static Head = _____+______

Static Head = Discharge Head – Suction Head

Static Head = Discharge Head + Suction Lift

Friction Head is _____
C factor rating of the pipe.
Total Dynamic Head (TDH)

TDH = ____+____

TDH = Static Head + Friction Head
Water Horsepower

(TDH)(gpm)
Whp = —————-
______ gal/min/ft

(TDH)(gpg
Whp = ——————
3960 gal/min/ft
Break Horsepower

Whp
Bph —————
?

Whp
Bhp————————–
Pump Efficiency%
Motor Horsepower

Bhp
Mhp = ————–
?

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

Kwh = ( ? ) ( ? )

Kwh = (Kw) (hours of operation)
?
Detention Time —————–
?
Volume
DT = ———
Flow

or

Vol.
DT = ——–
Q

Velocity Formula
Q = AV

Flow = (Area)(Velocity)

Flow(ft)3)/sec = Area(ft)2) x Vel.(ft/sec)

Area of a circle
Area = (D)2) x .785
Volume of a cylinder
Vol. = (D)2) (.785) (H)
Circumference of a circle
Cir. = pi(D)
Area of a cylindrical tank
Area = pi (D)(H) + (D)2) (.785)

A, cylinder + A, circle

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