Chlorine dioxide as a biocide in open recooling basins
In addition to its use in drinking water, chlorine dioxide is also ideal for disinfecting water in open cooling systems. With pH values > 8.0, chlorine dioxide is more efficient than chlorine products. The ongoing biocide costs can be significantly reduced by installing a generator system each year. Another advantage is that chlorine dioxide can be measured manually and electronically. This is a major advantage over a broad-spectrum biocide.
As water in a cooling circuit does not have to comply with drinking water regulations, chlorine dioxide can also be produced in a generator system using sulphuric acid and sodium chlorite. This significantly reduces the corrosion rate in the treated water. The current generation of generation systems can be monitored remotely and generate an electronic operating log. The operating status can be transmitted via a 4-20 mA signal or via a BUS system. Maintenance of a generator system is carried out once a year by trained personnel.
emec LOTUS MINI - Chlorine dioxide generators
The LOTUS MINI system is a device for the production, dosing and monitoring of chlorine dioxide for the disinfection of water and is available as a system with a capacity of 8 g/h (192 g/day) and as a system for up to 20 g/h (480 g/day). Chlorine dioxide is produced by the acid-chlorite process from diluted hydrochloric acid (HCl 9%) and sodium chlorite (NaClO2 7.5%). Chlorine dioxide production by LOTUS MINI can be controlled according to the flow rate of the water or according to a predefined setpoint. No chlorine dioxide is stored or saved, so neither chlorine dioxide gas nor concentrated solutions are produced outside the process application. LOTUS MINI is designed so that chlorine dioxide is generated in a special reaction chamber. Safety is ensured by multifunction valves at the injection points in the reaction chamber. The starting chemicals are stored in tanks and fed into the reaction chamber via suction lances. Integrated fill level sensors stop the pumps automatically when the tanks are empty. The Lotus Mini system is equipped with the following components: The Lotus control unit Dosing pumps for HCI (red) and NaCIO2 (blue) A pump for dilution water (grey) 3SEFL flow sensors to ensure increased safety An MFKT/V multifunction valve that regulates pressure and safety and acts as an antisiphon and drain valve A reaction chamber Injection valves 2 suction lances Advantages: Reaction under atmospheric pressure High stability of the chlorine dioxide solution No loss of CIO2 due to closed reaction chamber Use of diluted chemicals Functions: Immediate CIO2 production Proportional CIO2 dosing Flow monitoring input (flow alarm) Tank level monitoring (level alarms) Water meter connection Standby input Real-time production data Monitoring of pumps and flow sensors (SEFL) Continuous data storage with system data log (logbook in the menu) ERMES communication mA output Display of the next service date Optional USB data protocol Optional Ethernet module Optional internal GSM/GPRS modem Characteristics: CIO2 concentration: 2g/l Dosing pumps for HCI (red), NaCIO2 (blue) and dilution water (grey) 3 SEFL control sensors for monitoring pump dosing #BBD0E0 » Frequently Asked Questions What can I use the LOTUS MINI 8 for? The LOTUS MINI 8 is suitable for the safe disinfection of water in various applications. Is the device also suitable for smaller volumes of water? Yes, the LOTUS MINI 8 was specifically developed for small to medium-sized applications. Do I need to store or stockpile chlorine dioxide? No, the chlorine dioxide is generated on demand and is not stored. Is the device complicated to operate? No, the system is designed for simple and convenient operation. Can dosing be performed automatically? Yes, the dosage can be automatically adjusted based on water demand. How safe is the operation of the LOTUS MINI 8? The device features various safety functions to ensure reliable operation. What are the benefits of on-site chlorine dioxide generation? You get fresh chlorine dioxide at any time and avoid complex storage requirements.
The LOTUS MINI system is a device for the production, dosing and monitoring of chlorine dioxide for the disinfection of water and is available as a system with a capacity of 8 g/h (192 g/day) and as a system for up to 20 g/h (480 g/day). Chlorine dioxide is produced by the acid-chlorite process from diluted hydrochloric acid (HCl 9%) and sodium chlorite (NaClO2 7.5%). Chlorine dioxide production by LOTUS MINI can be controlled according to the flow rate of the water or according to a predefined setpoint. No chlorine dioxide is stored or saved, so neither chlorine dioxide gas nor concentrated solutions are produced outside the process application. LOTUS MINI is designed so that chlorine dioxide is generated in a special reaction chamber. Safety is ensured by multifunction valves at the injection points in the reaction chamber. The starting chemicals are stored in tanks and fed into the reaction chamber via suction lances. Integrated fill level sensors stop the pumps automatically when the tanks are empty. The Lotus Mini system is equipped with the following components: The Lotus control unit Dosing pumps for HCI (red) and NaCIO2 (blue) A pump for dilution water (grey) 3SEFL flow sensors to ensure increased safety An MFKT/V multifunction valve that regulates pressure and safety and acts as an antisiphon and drain valve A reaction chamber Injection valves 2 suction lances Advantages: Reaction under atmospheric pressure High stability of the chlorine dioxide solution No loss of CIO2 due to closed reaction chamber Use of diluted chemicals Functions: Immediate CIO2 production Proportional CIO2 dosing Flow monitoring input (flow alarm) Tank level monitoring (level alarms) Water meter connection Standby input Real-time production data Monitoring of pumps and flow sensors (SEFL) Continuous data storage with system data log (logbook in the menu) ERMES communication mA output Display of the next service date Optional USB data protocol Optional Ethernet module Optional internal GSM/GPRS modem Characteristics: CIO2 concentration: 2g/l Dosing pumps for HCI (red), NaCIO2 (blue) and dilution water (grey) 3 SEFL control sensors for monitoring pump dosing MFKT/V multifunction valve for pressure and safety, as antisiphon and drain valve Reaction chamber made of PVC Housing made of ASA (acrylonitrile-styrene-acrylate copolymer) Protection class IP65 (NEMA4x) for the LOTUS control unit and pumps Rotary control for easy programming Operating temperature: 0/45°C (32/110°F) Frequently Asked Questions What is the LOTUS MINI 20 used for? For the production, dosing, and monitoring of chlorine dioxide for the safe disinfection of water. How is chlorine dioxide generated? Via the acid-chlorite process using dilute hydrochloric acid (HCl) and sodium chlorite (NaClO₂) in a closed reaction chamber. Is the process safe? Yes; chlorine dioxide is not stored, and all reactions take place in a controlled manner at atmospheric pressure. Can dosing be automated? Yes; dosing can be controlled proportionally to water flow or based on a predefined setpoint. What safety features are integrated? Multifunction valves, level sensors, flow sensors, and pump monitoring ensure safe production. What are the system's advantages? Immediate chlorine dioxide production, stable solution, use of dilute chemicals, real-time monitoring, and data logging. What is the output capacity of the LOTUS MINI 20? Up to 20 g/h (480 g/day) of chlorine dioxide; suitable for small to medium water volumes.