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Chemical Dosing Cost Optimiser

Calculate and compare coagulant, flocculant, and pH correction chemical costs for DAF and physico-chemical wastewater treatment.

Since 2016
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Calculate Your Chemical Costs

Chemical dosing is often the largest operating cost in DAF systems after energy. Optimising coagulant selection, polymer type, and pH correction can reduce OPEX by 15-30%.

Input Parameters

Flow & Operations

m³ per hour
Hours per day
Days per year
mg/L suspended solids

Coagulant

mg/L (typical 100-400)
£ per tonne delivered

Flocculant (Polymer)

g per tonne dry solids
£ per kg

pH Correction

kg per m³ treated
£ per tonne

Results

Annual Flow Treated120,000 m³/yr
Dry Solids Generated96 tonnes/yr
Coagulant Consumption24.0 tonnes/yr
Coagulant Cost£6,720/yr
Polymer Consumption336 kg/yr
Polymer Cost£1,512/yr
pH Correction Cost£2,100/yr
Total Annual Chemical Cost£10,332/yr
Cost per m³ Treated£0.086

How to Reduce Chemical Costs

Jar Testing

Systematic jar testing identifies the optimal coagulant type and dose for your specific effluent, often revealing 15-25% overdosing.

Polymer Selection

Matching polymer charge density and molecular weight to your solids profile improves flocculation and reduces polymer consumption.

Coagulant Switching

PAC often outperforms alum at low temperatures and produces less sludge. Ferric chloride excels at phosphorus removal.

Automated Dosing

Flow-paced and feedback-controlled dosing systems prevent overfeeding during low-load periods and shock loads.

Related Engineering Resources

Equipment

Chemical Dosing Systems

Automated coagulant and pH adjustment dosing skids with SCADA integration.

Explore Systems
Process

Coagulation & Flocculation

Chemical principles, jar testing protocols, G-value optimisation, and troubleshooting.

Read Guide
Engineering

DAF Sizing Calculator

Size dissolved air flotation systems from wastewater parameters.

Open Calculator
Testing

Pilot Testing

Validate chemical selection and dosing with real wastewater samples.

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Optimise Your DAF Chemistry

Our process engineers conduct on-site jar testing and treatability studies to identify the lowest-cost chemical regimen for your effluent.