Wastewater & Sewage · 10 calculators

Treat the load, not the brochure.

Activated sludge, aeration demand, organic loading and pump-station sizing. Built for the wastewater engineers who keep it compliant.

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Tenselo — Activated Sludge Design

Inputs

BOD load

250kg/d

Process

Conventional

F/M ratio

0.30/d

MLSS

3,000mg/L

Size the plant

Demonstration only — a simplified set of inputs is shown here. The live calculator includes additional fields and options.

Result

✓Conventional activated sludge

F/M 0.30 · MLSS 3000 mg/L

278 m³

Aeration basin

6.7 h

HRT

7.1 d

Sludge age (SRT)

235 kg/d

BOD removed

0.30 /d

F/M ratio

3,000 mg/L

MLSS

Real output from the Tenselo Activated Sludge Design. Confirm the exact selection against the manufacturer's data.

Inside this pack — 10 calculators

Every tool this discipline reaches for, in one place:

Gravity Sewer DesignPump Station Emergency StorageRising Main SizingWet Well Pump StationActivated Sludge DesignClarifier / Sedimentation SizingPopulation Equivalent & LoadGrease Arrestor SizingSeptic Tank & Land ApplicationTrade Waste pH Neutralisation

Why it earns its place

Less spreadsheet wrangling, fewer call-backs, sign-off you can defend.

Basin sized to the load

Aeration volume, HRT and SRT worked from the BOD load and the process you've chosen.

Aeration that's enough

Oxygen demand and blower duty matched so the bugs keep working.

Clarifiers & pumps too

Sedimentation, RAS and pump-station sizing in the same pack.

Every result, on your letterhead

One click turns any calculation into a clean, fully customisable PDF report — branded with your company logo, ready to drop into a submission, quote or design pack.

Your logo, company name and project details on every page
Inputs, results and the method, all documented
Professional output you can hand to a client or approver

[ Your company logo ]

Activated Sludge Design — Calculation Report

Wastewater & Sewage · Tenselo

BOD load	250 kg/d
Basin volume	278 m³
HRT / SRT	6.7 h / 7.1 d
MLSS	3,000 mg/L

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