Annual recovered volume = daily wastewater × fraction × operating days. Savings are water tariff plus optional discharge fee; energy and chemical OPEX are not subtracted.
Calculator
Q (m³/h or m³/day) × effective recovery × hours/days → annual m³. Gross = volume × (fresh water + discharge). Net = gross − optional OPEX. Concentrate remains to discharge.
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.
This calculator is an investor + engineer screen for Envora reuse trains: cooling-tower blowdown, process rinse or treated-wastewater UF/RO. Choose Q clearly as m³/h or m³/day; operating hours and days scale the annual volume.
Gross savings = recovered m³ × (fresh-water tariff + optional sewer/discharge fee). Energy and chemical OPEX, if entered, are subtracted from gross and not hidden; if blank, net = gross is stated. Simple payback appears only if you enter CAPEX — the tool does not invent investment cost.
100% recovery is not realistic. An RO Y cap limits the fraction; concentrate still goes to discharge or further treatment. Quality often still needs RO. The wastewater selector sets stages, the RO tool balances permeate/concentrate, water analysis screens TDS/COD. This is not a bankable model; tariffs vary by municipality and OIZ.
Investors, energy/environment managers and process engineers who need an annual m³ and net-TRY screen for cooling, rinse or wastewater reuse before a ZLD debate.
Pick the source type (a conservative fraction is filled). Enter Q as m³/h or m³/day, hours, days and the fresh-water tariff. Discharge fee, RO Y cap, OPEX (TRY/m³) and CAPEX are optional. Currency is TRY; interpret another tariff in your own unit.
Flow and fraction are constant (no seasonality). No inflation, capacity factor, membrane replacement, sludge or concentrate disposal cost. OPEX is subtracted only if entered. No payback without CAPEX. Screening only — not a bankable model.
The type sets a conservative default: treated-WW RO 60%, cooling blowdown 55%, process rinse 70%. Single-pass RO is typically 50–75%. An RO Y cap will not let the fraction exceed Y. ZLD is a separate evaporation study.
If OPEX (TRY per recovered m³) is entered, it is subtracted from gross and shown on net; if blank, net = gross is stated. Simple payback appears only if you enter CAPEX. The tool does not invent investment or energy unit cost.
Unrecovered volume still goes to discharge, evaporation or a second pass. The mass balance shows it in m³/h and m³/year. Disposal cost is not added in this screen.
Use the wastewater selector for the train, the RO tool for permeate/concentrate, and water analysis for quality. Send flow, analysis and the target fraction via the contact form; we prepare a P&ID, equipment list and CAPEX/OPEX pre-assessment.
Envora Global’s engineering team prepares a project-specific pre-assessment covering water characterization, P&IDs, equipment lists, OPEX/CAPEX and turnkey delivery.
