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PUREFLOW BIO / ENGINEERING FIELD GUIDE

UV Sterilisation for HydroponicsProtecting the Nutrient Solution

UV sterilisation for hydroponics: what UV-C kills, dose and sizing, placement after filtration, lamp care and limits of UV in nutrient solution.

Explore the process ↗Open the workbench
8 MIN GUIDEUPDATED NOVEMBER 2026
Reference illustration for UV Sterilisation for Hydroponics: Protecting the Nutrient SolutionEQUIPMENT REFERENCE
Equipment reference illustration. Confirm the supplied model configuration and installation arrangement from its approved documentation.
01Understand the mechanismInspect the relevant process stages.
02Review the operating dutyKeep assumptions and measured values visible.
03Prepare the next decisionUse the guide, tools and project checks.
INTERACTIVE PROCESS ATLAS

See the mechanism.
Understand the duty.

Select a route or a stage to inspect the process. The cutaway explains the equipment and water environment; it is a teaching illustration, not a project drawing.

Swipe horizontally to inspect the equipment. Stage buttons below also centre the selected component.
Enclosed UV reactor with flow and quartz sleevePUREFLOW / INTERACTIVE PROCESS ATLASCONCEPT LAYOUT · NOT TO SCALEREACTOR MONITORINGENCLOSED LAMP / QUARTZ SLEEVEPARTICLE CONTROLTREATED RETURNFLOW, UVT AND VALIDATED REACTOR PERFORMANCE DEFINE THE DUTYMotion explains the process; it is not a measured flow rate or biological time model.
Water passes through an enclosed treatment chamber. Actual reactor flow belongs in the performance review.
Selected process stage

Pre-filter

Define the treatment objective and actual reactor flow.

How it works

Control particles and confirm UV transmittance before assessing reactor performance.

What to establish
  • Define the treatment objective and actual reactor flow.
  • Use UVT and validated reactor performance.
  • Follow the enclosed reactor’s isolation, lamp and sleeve procedures.

Continue this guide ↗

Motion explains direction and mechanism; it does not represent measured performance. Geometry, stage order, pipe routes and equipment configuration are conceptual. Use the approved project design, operating instructions and verified model data.

Key takeaways

  • UV-C inactivates many pathogens and algae in flowing water.
  • Filter first. Cloudy water blocks UV.
  • Size by dose and flow, and replace lamps yearly.
  • UV does not remove nutrients or chemical contamination.
Reference illustration for UV Sterilisation for Hydroponics: Protecting the Nutrient Solution
Equipment reference visual; not evidence of a completed installation.
THE SHORT ANSWER

What uv-c does

Short-wave UV passes through water in a chamber and disrupts microorganism DNA. Treated organisms cannot multiply.

UV Sterilisation for Hydroponics - Pureflow Bio
Reference visual. Equipment configuration and project details must be confirmed separately.
HYDROPONICS

Dose and sizing

Dose is intensity times contact time. Slower flow or more lamp power gives a higher dose. See UV lamp sizing and dose.

PLANNING WORKBENCH

Work with your own numbers.

Use the tools below to explore the relevant arithmetic. Enter measured values or declared assumptions. An estimate does not establish equipment capacity, biological performance or a safe operating limit.

Nominal hydraulic residence time

Relate wetted chamber volume to actual flow through that chamber.

Assumptions and limits

Volume ÷ flow is a nominal hydraulic value. It is not UV dose, ozone CT, pathogen inactivation or biological contact effectiveness. Mixing, short-circuiting and validated reactor performance remain separate.

—Nominal residence · seconds
—Nominal residence · minutes
Enter your values, or load the labelled arithmetic example. No design values are pre-filled.
FormulaNominal residence seconds = chamber litres × 3.6 ÷ flow in m³/h.
Convert units before you calculate
Choose units and enter a value.

Planning arithmetic · inputs remain visible for review · example values are not operating recommendations

HYDROPONICS

Placement and care

  1. Put it after filtrationClean water lets UV through.
  2. Size for peak flowNot average.
  3. Clean the sleeveScale reduces dose.
  4. Replace the lampAbout every 12 months.
UV Sterilisation for Hydroponics - Pureflow Bio
Reference visual. Equipment configuration and project details must be confirmed separately.
HYDROPONICS

Limits

  • No effect on dissolved nutrients.
  • Cannot clean cloudy water.
  • Does not kill pathogens already in roots.

Pureflow Bio equipment for this

UV disinfection systems →UV-C to control pathogens and algae.Standard drum filters (RDF) →Solids removal for recirculating nutrient solution.
PROJECT REVIEW

Use the real irrigation return

Use these questions to prepare a project brief or an operating review. Check an item only when the information has been recorded for your installation.

0 of 3 checked

This checklist is a working aid in the current page session, not a saved maintenance record.

QUESTIONS

UV Sterilisation for Hydroponics FAQ

Does UV harm nutrients?

It can affect some chelated iron slightly. Test and adjust.

How often to replace the lamp?

About every 12 months.

Can UV replace filtration?

No. Use both.

KEEP READING
UV clarifier vs sterilizer→UV lamp sizing→Hydroponics→Hydroponic algae control→Deep Water Culture: Setup, Oxygen and Common Problems ↗Drum Filter for Hydroponics: Drain Water Filtration Guide ↗

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