Thickener / clarifier simulation

slurry -> dense underflow + clarified overflow

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Governing equations

The exact equations the solver works for a thickener / clarifier — the same math shown in the app's "Theory" panel, not a black box.

\dot n_{s,under}=R\,\dot n_{s,in},\quad \dot n_{l,under}=\dot n_{s,under}\frac{1-f_s}{f_s}

\dot n_{over}=\dot n_{in}-\dot n_{under}\;\;(\text{clarified liquid + unrecovered fines})

$R$: solids recovery to the underflow [0..1]
$\dot n_{s}$: solids molar flow [mol/s]
$\dot n_{l}$: liquid molar flow [mol/s]
$f_s$: solids fraction of the dense underflow — sets how much liquid must go with it
$\dot n_{over}$: overflow (clarified liquid + unrecovered fines) [mol/s]

Parameters

solids_recovery [0..1 solids to underflow, default 0.98], underflow_solids_fraction [0..1 solids fraction of the dense underflow, default 0.55]; feed = solid + liquor inlets (Coe-Clevenger mass balance)

Thickener / clarifier simulation

Governing equations

Parameters

Example flowsheets that use it

Crystallize → thicken (dewatering)

Produced-water scale removal: precipitation + thickener dewatering

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