Water Recycling System

Don’t throw water away —
keep it clear 24 hours a day

Nanobubbles and an active catalyst purify, disinfect and deodorize water from saunas, pools, food plants and fish farms so it can be reused.

70–80%Lower energy cost

30 → 3Water changes per month

24 hClear water quality

01 SYSTEM

Water purification and recycling

Used water is purified by the nanobubble and catalyst system and circulated again. Organic matter breaks down, pipes stay clean and bath water stays clear.

Collect used waterUsed water gathers in the bath or recycling tank.

Remove sludge & disinfectIn the purification tank, the nanobubble and catalyst units remove sludge automatically and disinfect.

Return clean waterWater cleared of color, turbidity and bacteria is pumped back.

Keep circulatingUsed water returns to the tank and the cycle repeats.

Saunas
Swimming pools
Food industry
Kimchi brine
Fish farms

02 TECHNOLOGY

Nanobubbles and active catalyst

Nano-micro bubbles

More dissolved oxygen than ordinary water reduces pollutants and odors. They also generate over 10 times the negative ions of a waterfall.

Active catalyst

NaOCl solution contacting a metal-oxide catalyst produces superoxide ions (O₂⁻) and OH radicals that drive oxidation-reduction reactions in the water.

The result

Sludge and organic matter float up and are removed, keeping water clean and clear around the clock.

Metal oxides used: Na₂O · CaO · Al₂O₃ · MgO · B₂O₃ · Li₂O · BaO · ZrO₂ · TiO₂ · ZnO · PbO · SrO · Fe₂O₃ · CeO₂

03 BENEFITS

Clearer water, fewer water changes

Disinfection & deodorization

Kills common bacteria and Legionella and removes odors.

Scale & sludge

Detaches scale and reduces sludge.

Lower chemical cost

Less algae and fouling means less spent on cleaning chemicals.

70–80% lower fuel & water bills

Sharply cuts sauna boiler fuel and water costs.

Clean facilities

Baths, floors, walls and pipes no longer feel slimy.

Heat-exchanger protection

Removes hardened scale from heat exchangers and condensers.

Kimchi plant brine recycling — purifying and reusing salting brine cuts salt costs by 70%.

04 OPERATION

Installation and operation

Item	Details
Installation	Replaces the existing sand filter · hot, warm and cold baths, resort pools
Operation	Water changed only once or twice a month · 70–80% lower water and fuel bills for a typical bath
Water quality	Same quality morning and evening · clearer than with a sand filter, passes E. coli tests
Bathing comfort	Neutralizes chlorine by-products (trihalomethanes) · catalyst water with antibacterial and deodorizing effects
Maintenance	No consumables to replace periodically — eco-friendly and easy to maintain
Financing (Korea)	Low-interest loans from the Korea Energy Agency’s energy rationalization fund can reduce the installation cost

05 CASE

Sauna case study (180 tonnes per day)

At a sauna treating 180 tonnes of water a day with six units, annual energy cost fell from KRW 94.3 million to KRW 23.2 million.

KRW 71.1MAnnual savings (75.4%)

86.97 toeEnergy saved (68.4%)

30 → 3 / monthWater changes (about once every 10 days)

Before

94,336 k KRW

After

23,245 k KRW

Item	Before	After
City gas	107,812 Nm³ · KRW 86,249k · 111.13 toe	10,235 Nm³ · KRW 8,188k · 10.29 toe
Electricity	70,325 kWh (chiller) · KRW 8,087k · 16.03 toe	130,939 kWh (30,139 + system 100,800) · KRW 15,057k · 29.9 toe
Total	KRW 94,336k · 127.16 toe	KRW 23,245k · 40.19 toe

Conditions: 180 t/day (2 t/h × 6 units × 15 h), units 3.2 kW × 6, 350 days/year at 15 h/day, hot/warm baths 120 t (41 °C) / cold bath 60 t (18 °C), 39 °C water reheated by only 2 °C, mains water 16 °C annual average, LNG KRW 800/Nm³, electricity KRW 115/kWh, boiler efficiency 90%. System power (100,800 kWh/year, KRW 11,592k) is included in the post-installation electricity figure.

06 RESULTS