Size your ozone generator for cleaner irrigation water. Model transfer efficiency and contact time easily. Export reports to share with clients and crews fast.
Choose a mode, enter your generator rating, and model real-world transfer. Use the advanced fields to estimate contact performance or air concentration.
A sample water-treatment scenario is shown below for reference.
| Rated Output | Run Time | Efficiency | Flow | Tank | Delivered (g) | Dose (mg/L) | Contact (min) | Residual (mg/L) | CT (mg·min/L) |
|---|---|---|---|---|---|---|---|---|---|
| 2 g/hr | 3 min | 8% | 10 L/min | 1 L | 0.8 | 2.6667 | 10 | 1.7442 | 17.442 |
Ozone generators are rated by mass output per hour, yet field performance depends on transfer efficiency and hydraulic conditions. This calculator converts the nameplate rating into produced and delivered mass for a chosen runtime. Delivered mass is the practical oxidant available to meet water demand and leave a residual for disinfection or odor control. Calibrate efficiency using dissolved ozone tests and off-gas observations. If you inject into a contact column, select realistic mixing and verify venting. For drip irrigation, consider downstream decay in pipes and emitters before water reaches plants. Include filtration and degassing devices, because bubbles can reduce transfer and uniformity overall.
Average applied dose is estimated by dividing delivered ozone by treated water volume. In irrigation loops, dose must first satisfy ozone demand from organics, iron, manganese, and biofilm. The tool subtracts an estimated demand, then applies a half-life decay model to approximate residual at the end of the contact tank.
Contact time is calculated as tank volume divided by flow rate, which links plumbing design to treatment strength. The calculator multiplies residual concentration by contact time to provide a CT value in mg·min/L. Higher CT generally increases pathogen inactivation and oxidation, but required targets vary by water quality and application.
For unoccupied greenhouse shock treatments, the air mode estimates a steady concentration from delivered mass rate and ventilation airflow, adjusted by a mixing factor. It also reports air changes per hour to show how quickly ozone is diluted. Use these results only for planning, with sensors and strict safety procedures.
CSV and PDF exports capture inputs, units, and computed outputs so teams can compare scenarios consistently. Save separate runs for seasonal water quality shifts, different flow settings, or generator maintenance states. Documenting efficiency assumptions helps troubleshoot when measured residuals differ from estimates and supports safer, auditable operating practices.
Q1: What efficiency value should I use?
A: Start with 60–90% for well-designed venturi or diffuser systems. Validate using dissolved ozone measurements and off-gas checks. Use lower values if bubbles escape, plumbing leaks, or mixing is weak.
Q2: Why does residual go to zero in my results?
A: Residual becomes zero when demand exceeds dose, or decay during contact is strong. Reduce flow, increase contact volume, improve efficiency, lower demand with prefiltration, or increase generator output.
Q3: How is contact time calculated?
A: The calculator uses contact time = tank volume ÷ flow rate. Use the effective contact volume, not total vessel size, and account for short-circuiting if baffles or mixing are poor.
Q4: Is the air mode safe for occupied greenhouses?
A: No. The air mode is a planning estimate for controlled, unoccupied treatments only. Always use sensors, exposure limits, and ozone destruct or ventilation before re-entry.
Q5: What does CT mean for irrigation applications?
A: CT is residual concentration multiplied by contact time. It helps compare designs and operating points. Target CT depends on microbes and water quality, so confirm performance with testing.
Q6: Why include half-life in the model?
A: Ozone decays in water due to temperature, impurities, and reactions. Half-life provides a simple way to estimate decay during contact. Use site measurements when available for better accuracy.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.