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Engineering Tool · Adsorption
GAC Breakthrough & Bed-Life Designer
Calculate browser-based GAC bed hydraulics and request authoritative empirical or Yoon–Nelson breakthrough results from the Worker.
Municipal Drinking WaterStage 04 — Oxidation or Adsorption
PROJECT · OPTIONALProject metadata
Report context used in exports; it does not change calculations.Edit detailsHide details
01 · DESIGN BASIS
Bed hydraulics and breakthrough basis
Bed hydraulics inputs
Standard bed geometry is calculated in this browser and remains available if the breakthrough Worker is unavailable.
BROWSER CALCULATION
Bed hydraulics
Bed volume = area × depth · Carbon mass = bed volume × bulk density · EBCT = bed volume ÷ flow · Superficial velocity = flow ÷ area
WORKER INPUT
Empirical breakthrough observations
Empirical observations
Enter measured or prepared observations. Values are sent only for the active method.
| Observation | Time (BV) | C/C0 (fraction) | Action |
|---|---|---|---|
| 1 | |||
| 2 | |||
| 3 | |||
| 4 | |||
| 5 |
Empirical observations require 0 ≤ C/C0 ≤ 1 and a nondecreasing curve when ordered by time.
Bed hydraulics: browser. Empirical interpolation and Yoon–Nelson fit: Worker authoritative. No browser breakthrough fallback.
02 · BREAKTHROUGH MODEL
Worker breakthrough result
No current breakthrough result
Run the active observation set through the authoritative Worker to produce a breakthrough estimate. Any input edit clears the previous model result.
03 · REPORTING
Exports and verification
Reports include current project metadata, bed hydraulics, the active dataset, structured Worker results, and diagnostics.
Verification suite
Calculation revision 1.0
115 focused checks cover Worker contract, browser bed hydraulics, empirical interpolation, Yoon–Nelson fit, unit conversion, input validation, and no-fallback behavior.
01
Engineering Basis
Methodology
Calculates bed geometry and hydraulics from area, depth, bulk density, and flow; breakthrough screening uses bounded empirical interpolation or the Worker Yoon–Nelson fit. These outputs are not guaranteed full-scale bed life, and no automatic RSSCT-to-full-scale conversion is performed.
Bed volume = area × depth. Carbon mass = bed volume × user-entered bulk density. EBCT = bed volume / flow. Superficial velocity = flow / area.
Empirical mode uses bounded piecewise-linear interpolation between adjacent observations only. It does not extrapolate.
Yoon–Nelson mode fits ln(r/(1-r)) = k t - k τ by ordinary least squares and derives target time from the fitted model.
Bed-volume time converts to service time using entered bed volume and flow; hours convert to bed volumes using the same geometry and flow.
Scope / Limitations
- Bed geometry, carbon mass, EBCT, and superficial velocity remain available in the browser. Breakthrough models use the authoritative Worker; empirical interpolation does not extrapolate.
- Breakthrough fitting and life calculations run in the Worker. If it is unavailable, no authoritative browser fallback runs.
- Yoon–Nelson does not model competitive adsorption, NOM fouling, mass-transfer-zone physics, or guaranteed field performance.
- RSSCT scale-up advanced model: DEFERRED. No automatic RSSCT-to-full-scale conversion is performed.
- Rotation planning basis is deferred; this version does not claim mechanistic lead/lag outlet prediction.
02
Engineering Path
Upstream Context
- Selected upstream solids-control basis Confirm the feed-water and solids-control assumptions before applying the selected media or advanced-barrier screen.
Current Tool Decision
- GAC Breakthrough & Bed-Life Designer Calculate browser-based GAC bed hydraulics and request authoritative empirical or Yoon–Nelson breakthrough results from the Worker.
Downstream Engineering Step
- Chlorine / Chloramine CT & Residual Designer Coordinate the selected disinfection approach with storage and finished-water checks; a screening result is not regulatory credit.
- UV Disinfection Designer Coordinate the selected disinfection approach with storage and finished-water checks; a screening result is not regulatory credit.