Strumento di ingegneria · Chimica

CT e residuo di cloro/clorammine

Calcola il tempo di contatto teorico e corretto per il fattore di baffling, il CT con residuo misurato e i riepiloghi di esposizione per segmento.

Purificazione municipale dell’acqua potabileFase 05 — Disinfection

Stato: Disponibile

PROJECT · OPTIONAL

Project metadata

Optional report context; it does not change calculations.Edit detailsHide details

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01 · USER INPUT

Design basis and inputs

Initial residual basisInitial residual basisSelect the active source of the initial residual

Disinfectant dosemg/L as Cl2User-entered disinfectant demandmg/L as Cl2

Measured final outlet residualOptional · blank means not enteredEntered zero is a measured result and is used for the final Residual × T10 term.User-entered CT criterionOptional · blank means not enteredBlank means no criterion comparison. Zero is inactive.

Contact configurationContact configurationChoose one hydraulic basis

Design flowm³/dContact basin volumem³Baffling factorfractionRequired range: 0 to 1.First-order decay constantmin⁻¹

Browser calculation. Criterion comparisons are screening only; no regulatory compliance conclusion or pathogen credit is provided.

02 · CALCULATED RESULT

Structured results

Enter the active design basis, then calculate to create a result.

03 · REPORTING

Exports and verification

Exports include only the selected residual basis and active contact configuration. A current result is required.

Verification suite

Calculation revision 1.1

Focused deterministic tests cover single-basin and multi-segment residual propagation, CT methods, optional criteria, active basis selection, and validation.

Questo strumento di ingegneria è attualmente disponibile solo in inglese.

Base ingegneristica

Metodologia

Usa il ramo dose meno domanda o residuo iniziale misurato e combina tempo nominale e fattore di baffling inserito per valutare residuo e CT per segmento. Criteri utente e decadimento generico non equivalgono a credito CT normativo automatico né a calcolo regolatorio del CT.

Available calculation branches are dose-minus-demand or directly measured initial residual, and single-basin or serial multi-segment contact. There is no separate free-chlorine/chloramine selector; the same generic user-entered decay model is used for either intended chemistry.

Calculated initial residual = max(dose − user-entered demand, 0), unless directly measured initial residual is selected.

First-order modeled residual uses Cend = Cstart exp(−kT10) in each contact segment.

Theoretical detention = volume / flow. T10 = user-entered baffling factor × theoretical detention.

Multi-segment Residual × T10 sums each segment modeled end residual × segment T10, using an entered measured final outlet residual for the final segment term when supplied, including 0 mg/L.

Integrated first-order exposure sums Cstart(1−exp(−kT10))/k, with the k=0 limit Cstart×T10.

The user-entered CT criterion compares with single-basin Residual × T10 or, in multi-segment mode, segment-summed Residual × T10. This is not regulatory CT credit.

Ambito / Limiti

Mantieni distinti i totali residuo×T10 per segmento, residuo in uscita×T10 totale ed esposizione integrata del primo ordine; un residuo misurato pari a zero è valido.
Residuals, dose, and demand use an entered chlorine-equivalent basis in mg/L as Cl2. The model does not distinguish free chlorine from chloramine, model chemical-specific reactions, or select chemistry-specific decay coefficients.
There are no pH, temperature, organism, log-inactivation, or reference CT-table inputs. This tool does not calculate required CT or regulatory/pathogen credit; the user-entered CT criterion is a comparison value only.
No jurisdiction-specific compliance conclusion, automatic pathogen credit, DBP prediction, or chemical recommendation.
Regulatory CT profiling uses measured residual and peak-hour flow for each disinfection segment. This screen uses a user-entered design flow in m³/d, baffling-factor estimates, model-derived intermediate residuals, and at most one measured final residual; its Residual × T10 outputs are not regulatory CTcalc.
Baffling factor and decay constant are project inputs. Integrated first-order exposure is not automatically equivalent to a regulatory CT-credit method.

Percorso ingegneristico

Contesto a monte

Base per trattamento avanzato mirato Prosegue con una barriera di adsorbimento o ossidazione solo quando un obiettivo specifico di qualità dell’acqua la giustifica.

Decisione di questo strumento

CT e residuo di cloro/clorammine Calcola il tempo di contatto teorico e corretto per il fattore di baffling, il CT con residuo misurato e i riepiloghi di esposizione per segmento.

Passaggio ingegneristico a valle

Progettazione del serbatoio di acqua trattata e ricambio dell’accumulo Coordina la disinfezione scelta con stoccaggio e qualità finale; un risultato di screening non è credito normativo.