Membranelektrolyse 48
Type 48 Membrane Electrolysis
High-performance, electrochemical water treatment for larger private outdoor pools, indoor pools, therapy pools, and hot tubs.
Technology
Innovative Membrane Cells
The EWT Type 48 membrane electrolysis system continuously produces highly effective hypochlorous acid from natural salt—with twice the output of the Type 24 model for larger pools. The physical separation of the brine from the pool water circuit via a high-tech membrane completely prevents the pool water from becoming oversalted.
The closed system uses a maintenance-free injector mechanism to feed the liquid active chlorine directly into your piping via a bypass loop. Mechanical dosing pumps are completely eliminated. The diaphragm cell is protected underwater in the brine tank, so there is no risk of chlorine leakage.
Rated power
48 g Cl₂ / h
Salt consumption
~ 6 kg / day
Here’s how it works
The Synthesis Cycle
From plain table salt to highly effective, crystal-clear bath water in three automated, safe steps.
1
Automatic brine formation
In the 90-liter storage tank, a saturated salt solution (brine) is produced from ordinary, high-purity evaporated salt and bypass water. This process runs completely autonomously and under controlled conditions—under continuous load, up to 6 kg of salt is processed per day.
2
Electrochemical Splitting
The brine is fed into the membrane cell. Under precise direct current supply and strict spatial separation provided by the membrane, highly pure, germicidal hypochlorous acid is produced—up to 48 g of active chlorine per hour.
3
Safe Injection
The brine is fed into the membrane cell. Under precise direct current supply and strict spatial separation provided by the membrane, highly pure, germicidal hypochlorous acid is produced—up to 48 g of active chlorine per hour.
Flexible Use
Areas of Application
Large private outdoor swimming pools
Using the state-of-the-art injector principle, the fresh active chlorine is drawn directly into the main flow by vacuum. No vulnerable dosing pumps, no residues in the pool water.
Private Indoor Swimming Pools
Air quality is especially important in enclosed spaces. Precise dosing prevents the formation of combined chlorine (chloramines)—ensuring a perfect indoor environment without that swimming pool smell, even with larger volumes of water.
Therapy Pool
The formulation creates an exceptionally mild environment that is gentle on the skin and eyes. It is ideally suited for daily medical use and for sensitive user groups, even in larger facilities.
Hot Tubs & Spas
Reliable water hygiene despite high temperatures and intense turbulence. The electrolysis cell provides consistently reliable protection in the demanding spa sector.
Data Overview
Comparison of system sizes
| Parameter | Type 48 | Type 24 | Type 100 |
|---|---|---|---|
| Nominal output (active chlorine) | 48 g Cl₂ / h | 24 g Cl₂ / h | 100 g Cl₂ / h |
| Recommended tank size | Large private pools | Private pools / spas | Professional |
| Water consumption in operations | 1,0 l / h | 1,0 l / h | 5,0 l / h |
| Max. salt consumption (24h continuous load) | 6,0 kg / day | 3,0 kg / day | 10,0 kg / day |
| Electrical power consumption | 260 VA | 100 VA | 520 VA |
| Wallboard dimensions H x W | 740 x 820 mm | 740 x 755 mm | 740 x 820 mm |
Video-Tutorials
Learn everything about the professional installation, ongoing operation, and simple maintenance of membrane electrolysis systems in our detailed tutorials.
System Overview
Get to know all the key components of an EWT membrane electrolysis system.
Saltwater pools.
The system and its performance capabilities are specifically scalable and designed to meet the spectrum of your requirements.
Renewal of a facility.
Our systems are suitable not only for new installations but also integrate seamlessly into existing systems.
System components
Optional extensions
Modul 01
Double dosage
Control and disinfect two separate water circuits using just a single control unit. Ideally suited for the fully automatic, simultaneous servicing of a large outdoor pool and a separate wellness whirlpool.
Modul 02
Marble gravel container
Protect valuable materials sustainably. When using low-calcium or very soft fill water, the compact bypass module ensures continuous, chemical-free stabilization of carbonate hardness and prevents acid damage.
Technical Advice & Price Inquiry
Would you like to upgrade your filtration system to modern, chlorine-odor-free membrane cell technology, or are you planning a new pool project? Send us your configuration.
Further information
Downloads
All relevant documents regarding membrane electrolysis at a glance.
Frequently Asked Questions
FAQ on the Type 48 Membrane Electrolysis System
How often does the salt need to be refilled in a Type 48 membrane electrolysis system?
The Type 48 consumes up to 6 kg of salt per day during continuous operation. The salt is automatically dispensed from a 90-liter storage tank, so in practice, it only needs to be refilled at longer intervals rather than daily.
What distinguishes membrane electrolysis from traditional salt electrolysis?
In conventional salt electrolysis, the entire pool water is salted and directly electrolyzed, which leads to a noticeable increase in salinity. With EWT membrane electrolysis, the brine is completely separated from the pool water circuit by a membrane. Only the finished active chlorine enters the pool.
Does the water smell like chlorine during membrane electrolysis?
Precise dosing prevents the formation of combined chlorine (chloramines), which is responsible for the typical pungent swimming pool odor. As a result, the indoor air quality in indoor swimming pools remains significantly more pleasant than with traditional chlorination.
What pool size is the Type 48 suitable for?
The Type 48, with a rated output of 48 g of active chlorine per hour, is designed for larger private outdoor pools, indoor pools, therapy pools, and hot tubs—the logical evolution of the Type 24 for larger pool volumes. For professional applications, EWT offers the Type 100; for public pools, the Type 250 and 500.
Can the system be retrofitted into an existing pool system?
Yes, the system is suitable for both new installations and retrofitting existing filter systems, and can be integrated into existing piping via the bypass using the injector principle.
Does the Type 48 require a fresh water connection?
No. As with the Type 24, the system is connected directly to the pool water and does not require a separate fresh water connection. A portion of the pool water is used to absorb the resulting disinfectant.