Active kg/h = flow × dose / 1000. Commercial product is scaled by strength and density; L/h feeds the dosing pump. No jar test or reaction stoichiometry.
Calculator
Active kg/h = Q × dose / 1000. Commercial product is scaled by weight-% and density. Chemical type prefills % and density; days/year and tank volume are optional.
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.
The dosing calculator returns hourly and daily consumption of the commodity chemicals Envora Global uses on coagulation–flocculation, pH control, RO antiscalant, chlorination and sludge-conditioning trains. The core relation is unchanged: m_active (kg/h) = Q (m³/h) × dose (mg/L) / 1000. ppm is taken as mg/L in water.
Commercial products are dilute: 12% NaOCl, 40% FeCl₃, 18% PAC, 30% NaOH, 98% H₂SO₄ or neat antiscalant. Choosing a chemical type prefills typical weight-% and density (kg/L); correct them from the SDS or CoA. Commercial kg/h = active / (strength/100); L/h = kg/h / density — pump stroke sits in that L/h band.
Coagulants (FeCl₃, PAC, alum) map to chemical treatment, lamella or DAF. Antiscalant belongs to the RO-skid programme (pre-treatment, cartridge, CIP). NaOCl/Cl₂ maps to potable and process disinfection; lime/NaOH/acid to pH neutralization; polymer to sludge dewatering; phosphate to corrosion control. The precipitant option is for wastewater physicochemistry; there is no stoichiometry.
Operating hours produce kg/day and L/day. Optional days/year give a coarse annual OPEX. A day-tank or IBC volume (neat or diluted) yields time-to-empty and refill interval. Jar tests, mixing and water chemistry change the real dose; this tool does not issue recipes.
Plant chemists, process engineers and bid teams estimating OPEX, day-tank volume and a rough dosing-pump size on coagulation, RO, disinfection or neutralization skids.
Chemical type prefills % and density; both stay editable. Flow and active dose (mg/L, ppm = mg/L) are required. Use 100% for neat product; for a diluted day-tank enter the diluted % and density. Hours scale daily use, days/year annual use, tank volume the refill interval.
Density is not temperature-corrected. Preset %/density are typical commercial grades, confirmed from the SDS. No dual-pump spare, flush water or spillage allowance. Guide dose bands are not a jar test. Antiscalant follows the vendor projection; coagulant follows the jar test. No precipitation stoichiometry, CIP recipe or gas-chlorinator hydraulics.
Active (mg/L; ppm = mg/L in water). For 12% NaOCl enter 12 in strength; the tool scales commercial kg/h and L/h. Entering as-supplied dose inflates consumption.
It prefills typical commercial % and density (FeCl₃ 40% / 1.42; PAC 18% / 1.20; alum 48% / 1.33; lime slurry 10% / 1.06; NaOH 30% / 1.33; NaOCl 12% / 1.18; neat antiscalant). Edit from the SDS. The formula stays the same; Envora process mapping in the result changes.
No. The 5–150 mg/L band is a guide. Envora chemical-treatment and DAF design confirms pH window, alkalinity and sludge volume with a jar test. This form converts an agreed mg/L into consumption.
From vendor software and the analysis (LSI, sulfate, barium, silica, SDI). Enter RO feed flow from the RO calculator as Q. The form does not invent the dose; Envora SWRO and potable RO skids plan antiscalant, biocide and CIP together.
No. Hypochlorite is not combined with acid or ammonium salts in the same tank or line. This tool does not give mixing instructions; it only calculates consumption of separate trains. Storage needs SDS, ventilation and bunding.
L/h is an orange band; stroke, suction lift, viscosity and a spare pump are fixed on the Envora P&ID. Enter IBC or day-tank litres for hours-to-empty and fills/week. Neat or diluted — use the % and density of the liquid actually pumped.
If days/year are set, kg/year and L/year are a coarse OPEX input. Unit price, freight, NaOCl decay and sludge disposal are not subtracted. A quotation needs an Envora pre-assessment.
For polymer enter the day-tank working solution (typically 0.1–0.5%), not 100% neat emulsion. The precipitant option is wastewater-physicochemistry consumption; metal stoichiometry and kg sludge/kg reagent are out of scope.
Antiscalant → RO calculator and seawater / drinking-water RO. Coagulant and precipitant → wastewater selector and chemical treatment / DAF. NaOCl → potable disinfection. pH → neutralization units. The water-analysis tool screens why a dose is needed; a quotation is requested via the contact form.
Envora Global’s engineering team prepares a project-specific pre-assessment covering water characterization, P&IDs, equipment lists, OPEX/CAPEX and turnkey delivery.
