Irrigation suitability, solids, loads and treatment removal

IrrigationWaterQuality: SAR, residual sodium carbonate, percent sodium, Kelly's ratio, magnesium hazard and USSL salinity class (ions in meq/L). TotalDissolvedSolids: k * EC and the ionic sum with bicarbonate as carbonate (0.4917 HCO3; Hem 1985). SuspendedSolids: APHA 2540 D/E gravimetric TSS and VSS. ConstituentLoad: load and flow-weighted mean concentration. RemovalEfficiency: percent removal and log removal value.

Usage

IrrigationWaterQuality(na, ca, mg, k = 0, hco3 = 0, co3 = 0, ec_us_cm = NULL)

TotalDissolvedSolids(
  ec_us_cm = NULL,
  kfac = 0.64,
  ions = NULL,
  bicarbonate = 0
)

SuspendedSolids(residue_mg, tare_mg, volume_ml, ignited_mg = NULL)

ConstituentLoad(concentration, flow, dt = 86400)

RemovalEfficiency(influent, effluent)

Arguments

na, ca, mg, k, hco3, co3

Ions (meq/L).

ec_us_cm

Electrical conductivity (uS/cm).

kfac

Conductance factor.

ions

Dissolved constituents (mg/L) other than bicarbonate.

bicarbonate

Bicarbonate (mg/L).

residue_mg, tare_mg, ignited_mg

Filter weights (mg).

volume_ml

Sample volume (mL).

concentration, flow

Concentrations and flows.

dt

Time step.

influent, effluent

Concentrations.

Value

List.

References

Richards, L. A. (ed.) (1954). Diagnosis and Improvement of Saline and Alkali Soils. USDA Agriculture Handbook 60.

Hem, J. D. (1985). Study and Interpretation of the Chemical Characteristics of Natural Water. USGS Water-Supply Paper 2254.

Examples

IrrigationWaterQuality(na = 6, ca = 3, mg = 5, k = 0.5, hco3 = 4, ec_us_cm = 900)$sar
#> [1] 3
SuspendedSolids(1523.4, 1510.2, 250, ignited_mg = 1514.6)$tss
#> [1] 52.8
RemovalEfficiency(c(200, 1e6), c(20, 1e2))$lrv
#> [1] 1 4