GRUNDFOS DATA BOOKLET Selcoperm SES Electrolysis system Reliable and easy generation of hypochlorite solution for disinfection applications

Drinking water treatment Swimming pool water treatment General information Fundamentals of disinfection Disinfection with chlorine The Selcoperm electrolysis principle Benefits of the electrolysis with Selcoperm Applications Requirements for the installation Installation scheme Structure of a Selcoperm system Unique selling points Selcoperm selection diagram Electrolysis cell and hydrogen degassing column Hydraulic chamber Control system Ventilation Constructional scheme Selcoperm components Technical data Brine tank Product storage tank with collecting tray Large product storage tank without...

Disinfection with chlorine The most widespread disinfectant used in the treatment of drinking water is chlorine, which can be applied in a variety of ways. History has taught us that, in bacteriological terms, chlorinating water is a quite safe way of disinfecting drinking water. After all, more than 75 years have passed since chlorine was used to disinfect drinking water for the first time. Many years of experience have shown that acute toxicity can be excluded, when chlorination is executed correctly. The disinfecting properties of chlorine are based on the fact that hypochlorous acid (HClO)...

General information After dosing the solution into the water flow, no pH value correction is necessary, as it is often required e.g. in electrolysis according to the membrane principle. The sodium hypochlorite solution reacts in a balance reaction, resulting in hypochlorous acid, the efficient disinfectant: NaClO + H2O ↔ NaOH + HClO The dosing quantity depends on the application as well as the local regulations. In general, the concentration after the injection unit is 0.3 to 2 ppm chlorine equivalent. Benefits of the electrolysis with Selcoperm • Robust turn-key system • Safe and reliable method...

General information Installation scheme Room installation with a Selcoperm system The internal vent tube has to be piped to the exterior of the building. Minimum tube diameter 90 mm. Maximum length of the tubing 10 m. Must be installed without dips and adequately supported to a safe discharge point. Minimum diameter 32 mm for tubing between the unit and the product tank. Tubing from the Tee above the product tank in an upward direction until the Venturi Tee. Brine tank Product tank Dosing pumps Vent tubing Around the electrolysing system, enough space should be left free for operation and maintenance...

Unique selling points Selcoperm units consist of the electrolysis cell, degassing column, brine dosing pump, exhaust fan with quantitative air flow monitor for air dilution of electrolysis chamber and a water softening system. In addition the following equipment is required: a salt saturator, product tank for storage of the generated solution and dosing pumps. The installation can be rounded off with a measuring and control unit for chlorine dosing, if required. The Selcoperm system is supplied as a turn-key solution, only the tubing for the water connection, the connections for the salt and...

2. Identification Type key Example: SES-250-M/G-GB Example

3. Applications Drinking water treatment Scheme: Drinking water treatment with Selcoperm Groundwater Measuring system Selcoperm electrolytic chlorination system Chemical tank Oxidation Filtration Chemical conditioning

Swimming pool water treatment Scheme: Swimming pool water treatment with Selcoperm Swimming pool Remote maintenance, logging per PC DIP compact measuring and control system DIT analysing system Selcoperm electrolytic chlorination system Dosing station for flocculent (PAC) Dosing station for hypochlorite Dosing station for pH-correction Injection units Surge basin Filter Circulation pump Sample water feeding line Sample water recycling line

4. Construction Electrolysis cell and hydrogen degassing column • Installed in a separate chamber with a quantitatively monitored air flow. • Electrolysis cell (1) in a vertical transparent PVC pipe for easy process monitoring and visual electrode check. • Electrodes are made of titanium carrier material with a very durable catalytic metallic oxide coating, also suitable for cold water applications of 5 °C and higher. • The hydrogen degassing column (2) removes the formed hydrogen via the vent hole and prevents it from penetrating the product storage tank. The hydrogen is piped through the outlet...

Constructional scheme Selcoperm components I Constructional scheme Selcoperm - back side and right side Electrolysis cell Hydrogen degassing column Brine dosing pump Flowmeter Water flow adjustment valve Pressure reducing valve Water softener Level sensor (hydrogen degassing column) Non-return valve Control panel Display Air dilution fan Airflow sensor Inlet water supply Outlet soft water Inlet brine backflush for water softener Inlet brine for dosing pump Outlet regeneration water Outlet product solution Soft water sample valve Brine sample valve Product sample valve Outlet hydrogen gas

Constructional scheme Selcoperm - front side and left side Electrolysis cell Hydrogen degassing column Brine dosing pump Flowmeter Water flow adjustment valve Pressure reducing valve Water softener Level sensor (hydrogen degassing column) Non-return valve Control panel Display Air dilution fan Airflow sensor Inlet water supply Outlet soft water Inlet brine backflush for water softener Inlet brine for dosing pump Outlet regeneration water Outlet product solution Soft water sample valve Brine sample valve Product sample valve Outlet hydrogen gas

Product number Technical data

Technical data Product number Connections Type Selcoperm Outlet soft water Inlet brine water softener Inlet brine dosing pump Outlet regeneration water Outlet product solution SES-125 (mm) SES-125 (inch) SES-250 (mm) SES-250 (inch) SES-500 (mm) SES-500 (inch) SES-1000 (mm) SES-1000 (inch) SES-2000 (mm) SES-2000 (inch)