UVC disinfection.

Bolb Inc. has developed an LED for the first time that delivers an output power of 100 mW at a UVC wavelength of 265 nm. As a result the UVC LEDs distributed by Laser Components now cover exactly those wavelengths at which the best possible disinfection results can be achieved.

At an output power of 100 mW (265 nm), 110 mW (270 nm), and 120 mW (275 nm) per chip, they are currently the most powerful options available on the market.

LEDs are increasingly replacing mercury vapor lamps in disinfection applications. They have a much wider range of applications than conventional technology. While the lamps only develop their disinfecting effect in a very narrow wavelength range, UVC LEDs cover a broader spectrum. Added to this is the form factor: even larger LED arrays are often more space-saving and easier to install than lamps.

Accordingly, applications for UVC LEDs are currently among the most innovative and fastest-growing future markets.

@LCGermany @lasercomp_uk @BolbInc @PresseBox #PAuto #Laboratory 

Sensor holder for disinfection and water treatment applications.

New Liquid Analysis disinfection sensors and accessories have been released by Endress+Hauser. These are for measurement in more applications, adding the CCS55D Memosens Free Bromine sensor, CCS58D Memosens Ozone sensor, and Flowfit CYA27 assembly to the product family.

The CYA27 assembly is designed to be freely configurable, accommodating a wide range of sensors, including disinfection, pH, conductivity, and dissolved oxygen. It also offers flow monitoring and diagnostic indicator options to ensure reliable measurement, covering a wide range of disinfection applications.

CCS55D Memosens amperometric Free Bromine sensor.
The Memosens CCS55D is a diverse solution for measuring free bromine in seawater, swimming pools, process and cooling water, fish farming applications, and more. The membrane-covered, low-maintenance sensor is built for stable and long-term measurement, while tried-and-true Memosens digital sensor technology ensures maximum process uptime.

With a growing global population and ever-changing environmental conditions, the demand for potable water is on the rise, and the need for seawater treatment is becoming increasingly important. Apart from desalination, systematic disinfection is an essential step and legal requirement in water treatment to protect people and systems from illness and harm.

Why measure free bromine in seawater disinfected with chlorine?
Potassium bromide, when dissolved in seawater, is present in the ionic forms of K+ and Br-. In seawater, the natural concentration of bromine ions (Br-) is very small, while the concentration of chloride ions (Cl-) is significantly higher—over 300 times the bromide concentration. Additionally, chloride ions have a much higher electron affinity than bromine ions, causing the chlorine to exist as standalone ions while the bromine combines with hydroxyl (HO+) in seawater to form toxic hypobromous acid (HOBr).

Therefore, when chlorine in its various forms—including sodium hypochlorite (bleach), calcium hypochlorite, and others—is added to seawater, the result is HOBr, not hypochlorous acid (HOCl), due to the presence of Br-.

Free bromine measurements are also made where bromine is used as a disinfection agent in fresh water, such as in swimming pools. With its wide measurement range options—from trace levels of 0 to 5 mg/L (ppm), on up to 200 mg/L—and a maximum measured error of ±2 %, or ±5 µg/l (ppb), Endress+Hauser’s Memosens CCS55D Free Bromine sensor is the ideal measuring solution for monitoring bromine levels in almost any application.

CCS58D Memosens Ozone sensor.
Numerous agents are used today for water disinfection, including chlorine—the most widely employed in the US—chlorine dioxide, bromine, and ozone. Worldwide demand for ozone, in particular, is increasing, and the Memosens CCS58D Ozone sensor supports this trend with inline measurement using the Liquiline transmitter and Memosens digital sensor technology platforms.

This sensor is capable of measuring ozone concentrations in the range of 0.1 to 2.0 mg/L, with an error of ±2 %, or ±5 µg/l. This range is ideal for monitoring ozone levels in drinking water, wastewater, and utilities to ensure efficient and safe disinfection.

CYA27 Flowfit assembly – maximum flexibility, safe measurement, and easy maintenance.
Endress+Hauser’s new modular Flowfit CYA27 flow assembly enables measurement of up to six parameters in process and drinking water, enabling adaptation to many process requirements. The CYA27 provides a flexible basis for the measurement of disinfection parameters, including chlorine, chlorine dioxide, ozone, bromine, and further parameters of liquid analysis, such as pH, ORP, dissolved oxygen, and conductivity. The assembly features a status light that provides clear indication of the measuring point’s operational state. This light can be used to display flow status, showing a red light if the flow is too low, or it can be connected to a transmitter’s alarm relay to indicate the NAMUR status of the measuring point. This informs operators of process conditions at a glance, helping optimize production and mitigate potential problems.

@Endress_US @Endress_Hauser @Endress_CA @EndressUK#PAuto @Endress_DE #Water #PAuto 

UV keeps Nirvana pure.

Nirvana Spa in Berkshire is one of Britain's most prestigious spa facilities, frequented by elite athletes and celebrities. The facility has a reputation for using crystal clear natural mineral water drawn from the same pristine source 700 feet beneath the spa. To maintain the purity of the water within each of its nine pools, the spa is using the latest ultraviolet (UV) disinfection systems from Hanovia.

The spa has a broad range of pools, including Roman and surf rooms, a plunge pool, fitness pool, outside pool and hydrotherapy pool. Each has a specifically-sized Hanovia UV system installed to treat the water, ensuring the high level of quality and disinfection required.

“The Celestial Floatation Pool, which is the UK’s largest hydrotherapy pool, is unusual because it contains salt imported from the Dead Sea,” commented Neil Phelps, Nirvana’s Maintenance Manager. “We match the specific gravity of the Dead Sea. The high salt concentration makes objects very buoyant in the water and floating in the pool is perfect for spinal alignment. Bathers in the warm, mineral-rich waters are removed from most external stimuli and a gentle current gives the sensation of floating in space. This provides both mental and physical benefits and many sports men and women, including international rugby players, skiers and rowers, use the pool to enhance performance and reduce injury time.”

“UV disinfection systems allow us to run the chlorine at the right levels and there is no way we would be able to achieve the level of water purity without them. As the water temperature is kept at a constant 35°C, which is higher than in leisure pools, there is an increased risk of infection from microorganisms such as bacteria and moulds which thrive in warm water. Microbiological control is a key aspect of the water quality. UV plays an important part in that control and bacteriological checks are carried out regularly.

“Hanovia’s UV systems enable us to achieve exemplary water quality in all of our pools. This, coupled with Hanovia’s outstanding aftersales service, gives us, the maintenance team, the reassurance to maintain the high level of water quality and disinfection required,” concluded Neil.

UV is highly effective at killing any bacteria, viruses or moulds in the water, including Cryptosporidium and its spores, which are chlorine-resistant. This reduces problems associated with chlorine by-products such as chloramines, which are formed when free chlorine reacts with sweat or urine in pool water. Trichloramines in particular are powerful irritants which are responsible for eye and respiratory complaints and the unpleasant ‘chlorine smell’ commonly associated with indoor pools. It also means the water is much clearer than that found in traditionally chlorinated pools.

Each Hanovia UV system installed at Nirvana Spa consists of a stainless steel chamber containing a medium pressure UV lamp housed in a special quartz sleeve to protect it from the pool water. The chambers are carefully designed by Hanovia engineers using advanced flow calculation methods. This ensures maximum performance by making sure all the water flowing through the chambers receives the correct UV dose. UV technology provides a cost-effective and low-maintenance alternative to other water treatment systems such as ozone.

@Hanovia_UV  #Pauto @HHC_Lewis 

UV disinfection simplifies water treatment.

Berson and Hanovia have jointly launched a new low-pressure UV disinfection system for the treatment of municipal, re-use and waste water. The easy-to-install AmaLine R UV range has been third-party validated, in line with US EPA and NWRI guidelines. It provides effective treatment, while reducing lifecycle costs through being simple to maintain and extremely energy efficient. Unlike other similar systems, the AmaLine has been designed to simplify maintenance, which can be performed by a single operator rather than a crew, and without requiring external lifting equipment.

The AmaLine range is application-optimised in terms of its design and operation, with a flow range of 1-30 MGD (millions of gallons per day). The AmaLine R has a U-shaped chamber that optimises flow to cater for low UV light transmittance (UVT) water quality. This makes it ideal for re-use and waste water applications.

Also available is the AmaLine D range, designed specifically for municipal drinking water, which has a coaxial flow L-shaped chamber, and optimises flow to deliver the most effective disinfection for drinking water applications.

AmaLine has been designed using the latest computational fluid dynamics (CFD) modelling. A highly efficient chamber and optimised lamp positioning ensure maximum energy efficiency. Optimum distribution of UV intensity throughout the chamber provides effective water treatment.

AmaLine uses LPHO (low pressure high output) amalgam lamp technology that provides variable output ballasts (50 to 100%). This helps to reduce energy consumption further, but also provides greater UV intensity. Shorter physical lengths compared with conventional low-pressure lamps reduces the overall footprint of the system. The ability to leave LPHO lamps on, even when there is no flow, helps to minimise potential disruption to the process. The longer life amalgam lamp helps to extend the periods between servicing.

AmaLine is also much easier to service and maintain. In contrast with alternative solutions, the AmaLine system has been designed to enable a single operator to change lamps, quartz sleeve and wiper blades easily and safely without the need of cranes, hoists or other external lifting equipment. A unique lamp connector, with self-aligning functionality, enables simple and fast lamp replacement, helping to minimise downtime, protect an operator from harm during servicing, and provide assurance of optimal system operation.

Where Berson has been focused on the municipal market and Hanovia on industrial, both companies now will focus on all markets with joint resources. This will now increase the capability to develop products for various applications quicker, and provide extensive support globally. The AmaLine is a platform that has been designed for the municipal market but has been engineered so it can be adapted for specific industrial applications.

 @Hanovia_UV  #Water #Pauto

Electrolyser system for water disinfection

The Siemens Industry Automation Division has added four tubular cell electrolyser systems to its water disinfection portfolio. The new Osec B-Pak™products have an enhanced, compact construction and a newly designed electrolyser cell. This systems from Siemens generates a 0.8 percent sodium hypochlorite solution from water and salt for disinfecting drinking, process and swimming pool water.

Available in four new capacities, Osec B-Pak tubular cell electrolyzer systems from the Siemens Industry Automation Division extend the output range of the company's water disinfection portfolio. The largest model, the OSEC B-Pak 260 system, can produce up to five kilograms of chlorine per hour or 120 kilograms of chlorine per day. Producing the sodium hypochlorite as-needed and on-site eliminates the dangers involved in storing and transporting chlorine gas or commercially available sodium hypochlorite solution. As it is also cheaper to operate an OSEC B-Pak system than to buy sodium hypochlorite, the initial capital cost pays off quickly.

The newly developed systems are compact and mounted on a skid to save space, easy to operate, and designed for a long service life. The core component is a newly designed, especially robust electrolyzer cell in a clear acrylic enclosure that produces a stable disinfectant solution. The low-concentration solution minimizes corrosion and degradation - loss of available chlorine during storage - which occurs with highly concentrated solutions containing 10 to 15 percent sodium hypochlorite. Operational safety is enhanced thanks to the fully automated control system. Components are readily accessible and easy to clean. The systems are supplied completely pre-assembled, electrically connected and tested, and can be quickly installed and commissioned on-site.

PAA

Peracetic acid monitor for effective control of disinfection systems

Specialist electrochemical sensor manufacturer Analytical Technology Inc (ATi) has launched the Q45/85 Peracetic Acid Monitor. Peracetic acid (PAA) is an extremely strong oxidiser that is employed in a wide range of industries for the disinfection of systems and equipment. This new Peracetic Acid Monitor enables on-line measurement of residuals of PAA in disinfection systems.

As peracetic acid produces no harmful breakdown products, it is widely used in the food industry for the disinfection of piping systems and processing equipment. It is also used for spray washing of food products and disinfection of water systems. With any disinfection system, maintaining proper residual levels is essential to pathogen control. The company has developed the Q45/85 Peracetic Acid Monitor in order to facilitate reliable chemical control and provide real-time measurement of low levels of PAA in solution.

Their Q45 monitoring systems use a membrane-covered polarographic sensor that does not require the addition of chemical reagents. The Q45/85 Monitor does not contain any moving parts, pumps or motors that can burn out, or tubing breaks that require constant maintenance. Analytical Technology’s Peracetic Acid Monitor sensors are available in two configurations, flowcell or submersion. The constant-head flowcell sensor is used to maintain a constant flow rate and pressure at the face of the sensor for flow rates of at least seven gallons per hour. Alternatively a low volume flowcell can be supplied for clean water applications with flow rates of between one and three gallons per hour. The submersion sensor requires flow velocities of at least 0.4ft per second for effective operation.

The new monitor is available as an AC-powered analyser, loop-powered transmitter or battery-operated portable version, ensuring that the monitor is well-suited for almost any peracetic acid measurement. A portable data-logging version is also available for temporary installations or process studies. The Q45/85 monitor is offered with an optional pH sensor input, which allows a single unit to provide both peracetic acid and pH analogue outputs.