Drezen technology: ozone and UV
Ozone Dog Wash System: Ozonated Water and UV Sanitizing
An ozone dog wash system uses ozonated water, made by a generator built into the machine, during the bath to support cleaning and help reduce odors. After the dog leaves, ozone, ozonated water and UV sanitize the empty washing chamber, so each dog starts in a chamber that was sanitized after the last one.
Drezen calls this the Ozone Therapy System. It is a hygiene feature of the machine, not a treatment for the dog.
- Ozonated water during the bath
- Ozone + UV sanitizing after every wash
- 265 nm UVC-LED module rated IP68
- Standard on SE-2025A and FA-2025A
How the Ozone Dog Wash Cycle Runs, Step by Step
Phase 1 · dog inside, door closed
Spray
360° fine mist
Shampoo
and conditioner
Rinse
clean water
Warm-air drying
360° airflow
Ozonated water from the built-in generator is used during the bath
Door opens, dog leaves, door closes
Phase 2 · chamber empty, door closed
Ozone
reverts to oxygen
Ozonated water
in the empty chamber
UV light
265 nm UVC-LED, IP68
Next customer
can start a wash
Run together to sanitize the chamber
Schematic, not to scale
The bath runs first, with the dog inside, and ozonated water is part of it. When the cycle ends, the door opens and the dog leaves. The door closes again, and ozone, ozonated water and UV sanitize the empty chamber before the next customer. Our guide explains every stage of the wash cycle.
01
What Does Ozone Do in a Dog Wash?
Ozone is a reactive form of oxygen. Dissolved in water, it is used during the bath to support cleaning and help reduce odors. After the dog leaves, ozone and ozonated water also sanitize the empty chamber, which keeps the washing environment hygienic from one customer to the next.
Ozone works alongside the shampoo, not instead of it. The five dispensers still dose the shampoo and conditioner you choose, and the 360° spray applies them as a fine mist (how the 360° fine-mist spray works). Water treatment plants use ozone for the same reasons: it is a strong oxidant, generated on site, and also used for odor control (US EPA).
Photo: ozone generator
02
How Does the Machine Make Ozonated Water?
A built-in ozone generator converts the supply water into ozonated water during the bath. There is no ozone to buy, store or dose by hand. It is produced inside the machine as the cycle runs, because ozone is unstable and is always made at the point of use.
On site, the machine needs only a water inlet, drainage and power. Like every other component, the ozone generator is fitted in our own workshops in Hebei, and each machine is tested as a complete unit before it ships fully assembled. [NEEDS CLIENT DATA: generator type, ozone output in g/h and ozone concentration in the bath water in mg/L]
03
Why Does UV Run Only After the Dog Leaves?
UV light is for the surfaces of the empty chamber, never for the dog. It runs in the sanitizing phase, after the dog has left and the door has closed. SE-2025A and FA-2025A both use a 265 nm UVC-LED module rated IP68, sealed for a chamber that is sprayed with water every cycle.
A wavelength of 265 nm sits in the range where the germicidal effectiveness of UV light peaks, about 260 to 265 nm, which is also where DNA and RNA absorb UV most strongly (ACS Photonics, 2022). IP68 means the module is dust-tight and protected against continuous immersion in water. [VERIFY: door interlock, and how UV is prevented from starting with a dog inside]
Photo: UV module
04
What Happens to the Ozone After Use?
Ozone is unstable, so it breaks down into oxygen shortly after use. That is why the machine makes it when it is needed instead of storing it. During the cycle, the air system keeps air moving through the chamber and exhausts humid air from the unit.
The air system balances 40% fresh intake air, 40% recirculated air and 20% humid exhaust air, and the incoming air is filtered. If the machine stands in an enclosed room, plan ventilation for that exhaust. [NEEDS CLIENT DATA: how and where ozone gas is vented, and how long after the sanitizing phase the door opens]
05
Why Use Both Ozone and UV?
Each reaches the chamber in a different way. Ozonated water reaches the surfaces the spray wets, and UV acts on the surfaces its light reaches directly. Running both after every wash supports a more hygienic washing environment, with no extra step for your staff between customers.
Ozone and UV are one part of the machine’s hygiene design. The body is galvanized steel with an anti-rust, scratch-resistant surface treatment, the core components are IP65-rated, and your team runs a refill and hygiene check about every 2 weeks. See the other systems inside a Drezen machine.
What Ozone and UV Change for Operators and Dogs
For a business, the value of ozone and UV is less about the technology and more about routine. The sanitizing phase runs on its own after every wash, so hygiene between customers does not depend on who is on shift.
For the Operator
- Sanitizing is part of every cycle, so no staff step is needed between dogs.
- A hygiene point you can explain to customers in one line: the chamber is sanitized after every wash.
- A UV module rated IP68 and core components rated IP65, built for a wet area.
You still run a refill and hygiene check about every 2 weeks.
For the Dog
- Ozonated water supports cleaning alongside the shampoo you stock.
- Each dog starts in a chamber sanitized after the previous one.
- UV runs only when the chamber is empty.
The windows keep the dog in the owner’s view during the wash.
- Ozone is a hygiene feature, not a treatment. A dog with a skin problem needs a veterinarian, and matted coats still need a groomer.
What the Evidence Supports, and What We Do Not Claim
Ozone is a strong oxidant that water treatment plants generate on site and use for disinfection and odor control, as the US Environmental Protection Agency describes. The germicidal effectiveness of UV light peaks at about 260 to 265 nm, the range in which DNA and RNA absorb UV most strongly, according to research published in ACS Photonics.
These sources describe the technologies, not Drezen machines. We publish performance figures for our machines only when we have test data for them. You may see ozone products sold with skin and coat claims. We do not make those claims, because that is not what this system is for.
| ✓ What we state | − What we do not claim |
|---|---|
| Ozonated water is used during the bath to support cleaning and help reduce odors | That ozone treats, heals or relieves any skin, coat or ear condition |
| Ozone, ozonated water and UV sanitize the empty chamber after each wash | That the machine kills or eliminates bacteria, fungi, mites or viruses on the dog |
| Ozone breaks down into oxygen shortly after use | That the process is chemical-free, lick-safe or leaves no residue |
| The UV module is 265 nm UVC-LED, rated IP68 | Any percentage or comparison figure without a published test |
Sources: US EPA, Wastewater Technology Fact Sheet: Ozone Disinfection, EPA 832-F-99-063 (1999) · Sharma and Demir, “Bright Future of Deep-Ultraviolet Photonics”, ACS Photonics 9 (2022). Neither source tests Drezen machines.
Safety Features and the Operator's Routine
The safeguards are built into the machine at our factory, alongside its electrical safety and certifications. Your part is a short routine and the right site.
Built-in safeguards
- Ozone and UV sanitizing run in the empty, closed chamber after the dog leaves. [VERIFY: door interlock, and what happens if the door is opened during the sanitizing phase]
- A physical emergency stop button, plus pause and emergency buttons on the touchscreen. The emergency button opens the door automatically.
- Three RCBO devices for leakage and overload protection.
- A UVC-LED module rated IP68 and IP65-rated core components.
- Dual temperature protection on the heating system, tested before shipment.
Your Routine
Check refill levels and the machine’s overall hygiene about every 2 weeks, follow the operating manual, and never start a sanitizing cycle with a dog in the chamber.
Before Installing Indoors
Plan room ventilation, because the air system exhausts humid air from the unit. Ask us for the venting details for your room before you install. [NEEDS CLIENT DATA: ozone gas level in the chamber during the bath and after the sanitizing phase, in ppm; UV dose and exposure time]
Which Drezen Models Have Ozone and UV?
Ozone and UV sanitizing come standard on both models in our range of automatic dog washing machines. Custom builds are specified per order.
| Feature | SE-2025A | FA-2025A | Custom OEM / ODM |
|---|---|---|---|
| Ozonated water during the bath | ✓ Yes | ✓ Yes | Specified per order |
| Ozone, ozonated water and UV sanitize the empty chamber | ✓ Yes | ✓ Yes | Specified per order |
| UV module | 265 nm UVC-LED, IP68 | 265 nm UVC-LED, IP68 | Specified per order |
| Operating modes | Automatic + manual | Fully automatic | Specified per order |
Ozone Dog Wash FAQ
Is ozonated water safe for dogs?
In an ozone dog wash, ozonated water is used during the bath to support cleaning, and ozone breaks down into oxygen shortly after use. UV never runs with a dog in the chamber; it belongs to the sanitizing phase after the dog leaves. Ask us for the technical data for your market. [NEEDS CLIENT DATA: ozone concentration in the bath water]
Does the ozone system treat skin conditions or itching?
No. The ozone system is a hygiene feature of the machine. It supports cleaning during the bath and sanitizes the empty chamber after each wash. It is not a treatment for any skin, coat or ear condition, and a dog with a skin problem should see a veterinarian.
Does ozone replace shampoo?
No. Five independent dispensers dose shampoo and conditioner automatically at a set ratio, so you can offer up to five products. You choose what to stock, such as hypoallergenic or deodorizing shampoo, and you can source it locally or buy it from Drezen’s own shampoo factory.
Does the sanitizing phase add time between customers?
The full wash and dry cycle takes 20 to 30 minutes on average, and you set the wash and dry duration of each of the three programs in the backend. The sanitizing phase runs automatically after the dog leaves. [NEEDS CLIENT DATA: how long the sanitizing phase runs, and whether it is included in the 20 to 30 minutes]
Do the ozone generator or UV module need replacing?
There is no scheduled component replacement. Every machine has a 12-month warranty, and any part that fails because of a manufacturing defect is replaced free of charge with an original factory part. Lifetime technical support is available online, 24/7. [NEEDS CLIENT DATA: expected service life of the ozone generator and the UV module]
Can a machine with ozone be installed indoors?
Yes. Both models work indoors and outdoors. Indoors, plan ventilation for the room, because the air system exhausts humid air from the unit, and check the site requirements for indoor installation before you choose a spot. [NEEDS CLIENT DATA: ozone venting details]
Ask Us About Ozone and UV, or Request a Quote
Tell us where the machine will go and which model interests you. We reply within 1 to 2 business days with a configuration and quote.
12-month warranty · Lifetime technical support · CE certified · Tested to UL 60335-1