Engineering Calculation Tools
Pre-engineering calculators for water analysis, RO, pumps, dosing and process selection. Results are indicative; final design is confirmed by Envora’s team.
Fast, transparent and traceable calculations
These tools support feasibility, rough capacity sizing and technology screening. Assumptions are shown with every result. Final plant design depends on lab analysis, hydraulic profile, membrane/vendor curves and site conditions.
Disclaimer: Calculations use general engineering relations and are for preliminary assessment only. They are not sufficient for design, quotation, equipment selection or investment decisions. Contact Envora Global for detailed hydraulic, chemical and process design.
Water Analysis Interpreter
Turns an analysis into KPIs, a threshold table and an Envora train (pretreatment, UF/RO, DAF, biology).
Open calculator →RO System Calculation
Mass balance from permeate, recovery and feed quality, plus a rough pretreatment train and 1/2-pass screen.
Open calculator →Pump Power & Head
Total head, hydraulic kW and IEC motor estimate for transfer, tank-fill, dosing, RO HP and wastewater lines.
Open calculator →Chemical Dosing Calculation
kg/h, L/h, annual use and day-tank refill interval for coagulant, antiscalant, NaOCl, pH and polymer.
Open calculator →Tank Volume Calculation
V = Q × t for equalization, contact, clearwell, RO permeate, day tank and sludge holding, with freeboard and cell geometry.
Open calculator →Wastewater Process Selector
Screens DAF, precipitation, SBR/MBBR/MBR, RO reuse and sludge from food, dairy, refinery, municipal and mining character.
Open calculator →Water Recovery & Savings
UF/RO reuse screen: annual m³, gross/net TRY and concentrate still to discharge.
Open calculator →Why this toolkit?
Fast screening
Before a feasibility meeting you get a shared language for flow, TDS and stage order in minutes. Each tool has its own page and search intent.
Transparent assumptions
Formulas and limits sit in the result box and on the page. No hidden factors; detailed design still needs the lab and the site.
Path to a quotation
Send the output with flow and analysis via the contact form. Envora prepares a P&ID, equipment list and CAPEX/OPEX pre-assessment.
Frequently asked questions
Do these calculations replace detailed design?
No. The toolkit is for screening and feasibility. Membrane selection, pump curves, jar tests and hydraulic profiles must be confirmed by Envora’s engineering team.
Which tool should I start with?
If you have a lab report, start with the water-analysis interpreter. If product flow is known, use RO sizing; if wastewater character dominates, use the process selector. Each calculator has its own URL.
How do I turn results into a quotation?
Send flow, water analysis and process targets via the contact form. We prepare a project-specific P&ID, equipment list and CAPEX/OPEX pre-assessment.
Are calculations stored?
No. Values stay in your browser; nothing is posted to the server. Reloading the page resets the fields.
Work with our specialists for detailed design and quotation
Envora Global’s engineering team prepares a project-specific pre-assessment covering water characterization, P&IDs, equipment lists, OPEX/CAPEX and turnkey delivery.