Interactive Calculator

Waste-Saving Calculator

Model the annual variable-cost saving of treating organic waste on-site with subcritical water hydrolysis — versus sending it all to landfill.

Currency

Changing currency only swaps the symbol — values are not converted. Enter all figures in the selected currency.

A · Throughput

Hours of operation / day (hrs)

Days operated / week (days)

Cycle time (minutes per cycle incl. load/unload)

Tonnes per cycle (t (batch size))

Advanced

Weeks operated / year (weeks)

Cycles / day

102

Tonnes / day

714

Tonnes / week

37,128

Tonnes / year

Partial cycles are dropped (cycles/day is rounded down).

B · Waste volume & current (before) cost

Total waste sent to landfill / year (t)

Following modelled throughput (37,128 t/yr). Edit to model a subset.

Landfill cost (per tonne)

Transportation cost (per tonne)

Include transport cost

Before cost (landfill only): $8,168,160 / year

C · After Subcritical Water Hydrolysis processing & output

Mass reduces to 65% of input (24,133.2 t output from 37,128 t input).

Include wastewater byproduct disposal cost

Subcritical water hydrolysis also produces a small liquid wastewater byproduct. Disposal cost depends on your site's effluent handling and is typically minor. Leave the volume at 0 if you handle it in-house at no marginal cost.

Wastewater byproduct volume (t / year)

Wastewater disposal cost (per tonne)

Residuals incur transport cost

Residual solids always incur the landfill cost per tonne.

Residual disposal cost: $5,309,304 / year

Wastewater byproduct: $0 / year

D · Subcritical Water Hydrolysis fuel (running) cost

Fuel volume per cycle (litres)

Standard: 35 L kerosene per cycle.

Kerosene price per litre (per L)

Fuel cost: $606,424 / year(12,376 cycles × 35 L × $1.40)

E · Resale revenue (offtake)

Resell output?

Resale revenue is optional and should be validated against your local market before relying on it.

Before — landfill only

$8,168,160

After — Subcritical Water Hydrolysis

$5,915,728

Breakdown

Residual disposal$5,309,304
Wastewater byproduct$0
Fuel cost$606,424
Less resale revenue−$0

Annual saving

$2,252,432

−27.6% reduction

Before (landfill only)$8,168,160

After (Subcritical Water Hydrolysis)$5,915,728

Assumptions: mass reduction to 65% of input; split mode assumes 10% precipitate / 90% liquid of the output; solid mode can include a small wastewater byproduct disposal cost; variable costs only — excludes capex, labour, water, and maintenance. Figures are estimates for comparison only.

Remarks: these figures are for reference only. Actual results vary with your site, waste stream, energy prices, and local disposal rates. Request a site-specific assessment before relying on them for any decision.

Want figures tailored to your facility?

Our team will model your exact waste streams, throughput, and local costs.

Get a Quote Contact Us