tidywater (version 0.7.0)

solvect_o3: Determine disinfection credit from ozone.

Description

This function takes a water defined by define_water and the first order decay curve parameters from an ozone dose and outputs a dataframe of acutal CT, and log removal for giardia, virus, and crypto

Usage

solvect_o3(water, time, dose, kd, baffle)

Value

A data frame containing actual CT, giardia log removal, virus log removal, and crypto log removal.

Arguments

water

Source water object of class "water" created by define_water. Water must include ph and temp

time

Retention time of disinfection segment in minutes.

dose

Ozone dose in mg/L. This value can also be the y intercept of the decay curve (often slightly lower than ozone dose.)

kd

First order decay constant. This parameter is optional. If not specified, the default ozone decay equations will be used.

baffle

Baffle factor - unitless value between 0 and 1.

Details

First order decay curve for ozone has the form: `residual = dose * exp(kd*time)`. kd should be a negative number. Actual CT is an integration of the first order curve. The first 30 seconds are removed from the integral to account for instantaneous demand.

See Also

define_water

Examples

# Use kd from experimental data (recommended):
define_water(ph = 7.5, temp = 25) %>%
  solvect_o3(time = 10, dose = 2, kd = -0.5, baffle = 0.9)
define_water(ph = 7.5, alk = 100, doc = 2, uv254 = .02, br = 50) %>%
  solvect_o3(time = 10, dose = 2, baffle = 0.5)