Engineering tools
Make the numbers work for you.
Preliminary calculations with visible formulas, SI units and your own design inputs. Build a starting point for a conversation with our engineers.
RO Mass Balance & Recovery
Enter recovery as a percentage. Feasible recovery depends on feed chemistry and membrane design.
Open calculatorRO Preliminary Membrane Area
Flux and element area must come from approved design/manufacturer data.
Open calculatorTwo-Pass RO Mass Balance
Do not combine recoveries by simple addition.
Open calculatorUF Membrane Area & Module Count
Backwash/CEB/CIP and availability reduce net production; treat them explicitly.
Open calculatorNF Mass Balance
Do not promise hardness/TDS rejection without membrane projection.
Open calculatorSoftener Resin & Regeneration Load
Operating capacity and salt dose are resin/process inputs.
Open calculatorDM / Ion Exchange Load
Use ionic analysis rather than TDS alone for final design.
Open calculatorEDI Feed Check & Capacity Summary
Final module selection and current/voltage settings are manufacturer-specific.
Open calculatorPressure Filter Diameter
Check selected vessel standard diameter, freeboard and backwash expansion.
Open calculatorFilter Media Quantity
Bulk density is media-specific input.
Open calculatorFilter Backwash Flow
Confirm expansion, temperature and available drain capacity.
Open calculatorRectangular Tank Volume & Plate Area
No structural adequacy implied.
Open calculatorCylindrical Tank Volume & Plate Area
Head geometry must be selected explicitly.
Open calculatorPreliminary Tank Plate Mass
Stiffener/support/nozzle weight must be separately entered or engineered.
Open calculatorPressure Vessel Preliminary Thickness
Not for fabrication; code calculations and reinforcement checks mandatory.
Prepare design inputsPipe Diameter by Velocity
Select nearest commercial pipe size and re-check actual velocity.
Open calculatorDarcy-Weisbach Headloss
Fluid viscosity and roughness must match service.
Open calculatorPump Hydraulic Power
Final motor selection includes service factor and vendor curve.
Open calculatorBlower Airflow / Oxygen Screening
Vendor/diffuser verification required.
Open calculatorChemical Dosing Rate
Dose must be lab/process approved.
Open calculatorSTP Population & Sewage Flow
Generation rate is project input, not a universal website default.
Open calculatorSTP Tank Volume by HRT
HRT is process design input and technology-specific.
Open calculatorMBBR Media Volume Screening
Media data and loading criteria must be vendor/process approved.
Open calculatorMBR Membrane Area
Flux and cleaning regime must be approved for feed and membrane.
Open calculatorSBR Cycle Capacity
Detailed cycle phases and biological sizing require process design.
Open calculatorETP Equalization & Load Summary
Treatability and chemistry determine downstream process.
Open calculatorClarifier / Lamella Surface Area
Solids characteristics and manufacturer plate data matter.
Open calculatorSludge Dry Solids & Cake Quantity
Capture efficiency and polymer conditioning are separate inputs.
Open calculatorZLD Water Balance
Salt chemistry controls feasible recovery and scaling limits.
Open calculatorMEE/MVR/ATFD Mass Balance
Energy/heat-transfer design is vendor-specific and not derived from mass balance alone.
Open calculator