# Ideal Reactor Design Equations and Formulas Calculator

## Chemical Engineering Wastewater Water Treatment

Solving for Completely Mixed Reactor Time with Pulse Input #### Inputs:

 theoretical mean residence time (tR) secondattosecondcentisecondcenturydaydecadedecisecondfemtosecondhourkilosecondmegasecondmicrosecondmillisecondnanosecondminutepicosecondweekyearyoctosecondzeptosecond
 concentration (C) kilogram/meter^3gram/centimeter^3gram/meter^3gram/milliliterkilogram/deciliterkilogram/litermilligram/literounce/foot^3ounce/inch^3pound/foot^3pound/bushel UKpound/bushel USpound/gallon UKpound/gallon USpound/inch^3pound/yard^3ton metric/meter^3slug/foot^3slug/inch^3
 initial concentration (C0) kilogram/meter^3gram/centimeter^3gram/meter^3gram/milliliterkilogram/deciliterkilogram/litermilligram/literounce/foot^3ounce/inch^3pound/foot^3pound/bushel UKpound/bushel USpound/gallon UKpound/gallon USpound/inch^3pound/yard^3ton metric/meter^3slug/foot^3slug/inch^3

#### Conversions:

 theoretical mean residence time (tR)= 0 = 0second
 concentration (C)= 0 = 0milligram/liter
 initial concentration (C0)= 0 = 0milligram/liter

#### Solution:

 time (t)= NOT CALCULATED

#### Other Units:

Change Equation
Select to solve for a different unknown

Residence Time theoretical mean residence time reactor volume reactor flow rate

Step input for completely mixed or
continuously stirred tank reactor CSTR
Pulse Input for completely mixed or
continuously stirred tank reactor CSTR
Plug Flor Reactor PFR  step input: when t < tR, C = 0 when t >= tR, C = C0 pulse input: when t = tR, C = C0 when t < tR, C = 0 when t > tR, C = 0

Where
 tR = theoretical mean residence time V = reactor volume Q = reactor flow rate C = concentration at time C0 = initial concentration Cn = concentration at tank n t = time n = number of tanks

References - Books:
1) Warren Viessman and Mark J. Hammer. 1993. Water Supply and Pollution Control. Harper Collins College Publishers, Inc. 5th ed.

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