Hanovia News - a Halma PR news blog

British UV disinfection specialist Hanovia Limited (www.hanovia.com) has expanded its operations by moving to newer, larger premises in Slough, England. The new building provides 1,865 sq m (20,000 sq ft) of space, allowing Hanovia to significantly increase production of its UV disinfection systems which are sold world-wide for process water, aquaculture and swimming pool water treatment.

As the only UV system supplier to develop and manufacture both UV lamps and monitors, Hanovia is recognised as the technology leader in UV disinfection. Its UV systems are an integral part of many water treatment processes in the food, beverage, brewing and winemaking industries as well as high purity applications like pharmaceutical and semiconductor manufacturing.

British UV disinfection company Hanovia has appointed George Wang as its new China Country Manager. A subsidiary company of Halma p.l.c., Hanovia is one of the world’s leading UV disinfection system manufacturers for process water applications, with major installations in China, southeast Asia, Australasia, north and south America, Europe, the Middle East and Africa.

George has a Masters Degree from East China University of Science and Technology and has many years’ experience in research into various aspects of water treatment. His extensive knowledge of water treatment technology and UV disinfection will be very important in his new role.

“My role will be to help Hanovia develop partnerships with competitive sales and engineering companies in China which will allow us to offer the best, local service for our customers in this country,” commented George on his appointment. A highly qualified, dedicated individual, he brings to Hanovia valuable experience which will ensure the company maintains its position as a leader in UV technology applications.

Hanovia’s main markets in China are industrial users of process water such as semiconductor and pharmaceutical manufacturers, food, beverage and brewing, aquaculture and also operators of indoor swimming pools and spas.

Loch Fyne Oysters Ltd in Scotland has chosen two Hanovia medium pressure UV disinfection systems for its oyster farm in Loch Fyne, Cairndow, Scotland. The UV systems, which were installed by Barr and Wray, destroy harmful E.Coli bacteria from its oyster and  mussel depuration tanks. Each UV chamber treats up to 150 m3 water per hour.

According to a spokesperson from Loch Fyne Oysters, “The Hanovia units were recommended to us by Barr and Wray because of their 99.99% log reduction of E.Coli, their robust, stainless steel construction, their ease of installation and easy maintenance – including easy UV lamp replacement and daily cleaning with a manual wiper – and low running costs. We also find the digital run-time read-out very useful, and the price was very competitive.”

Hanovia UV systems can be used in farms and hatcheries to treat both incoming and recirculation water, allowing flexibility in the choice of site and a rapid payback for farmers. UV is ideally suited for this application as it uses no chemicals and does not create by-products which would harm the stock, or other aquatic life, on discharge. Unlike other treatment methods, UV also avoids the expense of complex monitoring systems involved in adding and removing chemicals before the water reaches the stock. In addition, it does not alter the pH of the water. Indeed, UV is the most economical disinfection technique that can be used in aquaculture.

Maintenance of the systems is restricted to the replacement of the UV lamps every 12 months, a simple operation that can be carried out by on-site staff. An automatic or manual wiper can be fitted over the quartz sleeve which surrounds the UV lamp to prevent the build-up of any deposits, ensuring maximum levels of irradiation at all times.

A significant feature of Hanovia’s systems is the Photon control panel which displays a range of useful functions such as flow rate, UV dose and intensity. It is capable of logging up to one year’s performance data, which can be downloaded to a PC through an RS232 port. Linked into a central computer, the control panel can also be operated remotely, and allows the system to operate around the clock.

Hanovia UV technology has been selected by NZ Hothouse, a leading New Zealand provider of fresh produce, to disinfect the water used for soil-less plant cultivation in its glasshouses.

Located near Auckland, NZ Hothouse has almost 20 hectares of glasshouses on two sites growing tomatoes, capsicums and cucumbers for distribution both nationally and internationally.

The source of the water is a combination of rain water and borehole water, which is stored in large outside holding ponds. The main microbial challenge organisms in the water include fungi such as Pythium, Phytophthora and Fusarium; bacteria such as Clavibacter and viruses such as tomato bronze (wilt) virus and tomato mosaic virus.

No conventional microbiological checks are carried out, but NZ Hothouse uses what it calls ‘bait tests’ with very young plants to see if they fall victim to any of these water-borne pathogens.

Two Hanovia PMD200 medium pressure systems are installed – one for each site – treating up to 68 m3 water per hour. UV treatment is ideal for this application as it is a completely clean technology that introduces no chemicals or unwanted disinfection by-products into the water and does not alter its pH.

The UV systems feature an automatic wiper which prevents the build-up of deposits on the quartz tube, ensuring optimum UV dose at all times. Photon control panels provide the operators with data on flow rate, UV dose and intensity and can log up to one year’s performance data, which is downloadable to a PC via an RS323 port. The control panel can also be operated remotely, allowing the system to run 24 hours a day. Maintenance of the unit is restricted to the replacement of a lamp every six months, a simple operation that can be carried out by on-site staff.

All Hanovia UV disinfection systems are easy to install, with minimum disruption to the plant. They need very little maintenance, the only requirement being replacement of the UV lamps and servicing of the wiper systems every 12 months, depending on use. For more information please visit the company’s website at www.hanovia.com.

To protect fish farms and hatcheries from outbreaks of water-borne diseases, water treatment specialist Hanovia Limited has developed a high intensity UV disinfection system. Capable of treating up to 700m3/hr of both fresh or sea water with at least a 99.99% kill rate, the UV system can be used to treat both incoming and recirculation water, allowing flexibility in the choice of site and a rapid payback for farmers.

Increased water extraction and lowered water quality can result in increased outbreaks of viral and bacterial fish diseases. Due to the intensive nature of fish farming, fish stock is also highly susceptible to infection from natural fish populations in the water feeding the farm. To break the infection cycle between fish farms and natural fish populations, a disinfection system is needed to treat water entering and circulating within fish farms.

UV is ideally suited for these applications as it uses no chemicals and does not create by-products which would harm the fish stock, or other aquatic life, on discharge. Unlike other treatment methods, UV avoids the expense of complex monitoring systems involved in adding and removing chemicals before the water reaches the fish. In addition, it does not alter the pH of the water. Indeed, UV is the most economical disinfection technique that can be used in fish aquaculture. Applications include treatment of water in hatcheries, shell-fish purging tanks and fry rearing tanks, and recirculation water in marine parks and aquaria.

Maintenance of the system is restricted to the replacement of the UV lamp every 12 months, a simple operation that can be carried out by on-site staff. An automatic or manual wiper can be fitted over the quartz sleeve which surrounds the UV lamp to prevent the build-up of any deposits, ensuring maximum levels of irradiation at all times.

A significant feature of the Hanovia system is the new Photon control panel which displays a range of useful functions such as flow rate, UV dose and intensity. It is capable of logging up to one year’s performance data, which can be downloaded to a PC through an RS232 port. Linked into a central computer, the control panel can also be operated remotely, and allows the system to operate around the clock.

To date Hanovia has installed over 300 aquaculture systems in 14 countries around the world. Applications include water treatment in hatcheries, fish farms (salmon, sea bream and sea bass) shellfish depuration tanks and fry rearing tanks as well as treating re-circulation water in marine parks and aquaria. For more information please visit the company’s website at www.hanovia.com .

UV disinfection specialist Hanovia Limited has appointed Andrew Clark as its new Technical Director. Andrew will be responsible for developing Hanovia’s UV expertise in process water applications such as pharmaceutical and electronics manufacturing, food and beverage processing, brewing and swimming pools worldwide.

He joins Hanovia from Hozelock Limited where he was Director of Design. Prior to that appointment he was Technical Manager of Raymarine Limited. Andrew, who is a graduate of the University of Southampton in the United Kingdom, has considerable experience in project management and designing products for global markets against tight unit cost constraints.

Commenting on his appointment Andrew said, “With many exciting developments under way I am greatly looking forward to being part of Hanovia’s continuing growth. With our strong scientific knowledge base we are exceptionally well placed to expand use of our chemical free, UV water treatment technology.”

Hanovia Limited has won the contract to supply Cultivos Huacamalal Ltda. of Chile with a medium pressure UV disinfection system for its new salmon hatchery in Rio Ignao in the south of the country. The UV system is part of a US$1.1 million water recirculation and effluent treatment system provided by Atlantech Chile Ltda. of Puerto Montt, Chile.

The Hanovia unit will treat well water used for make-up supply in the water recirculation system to control against Infectious Pancreatic Necrosis (IPN) RNA-virus. IPN is found in wild salmon populations on the Pacific coasts of both North and South America and can cause severe mortality (up to 80%) in fish up to two years old. It is a common disease in hatcheries and is also capable of transmitting epizootic conditions back to wild populations.

UV treatment is ideally suited for this application as it uses no chemicals, avoiding the expense of complex monitoring systems needed when adding and removing chemicals in feedwater. In addition UV treatment does not alter the pH of the water or produce any harmful by-products in the discharged water.

The UV system to be installed at Rio Ignao features a manual wiper which prevents the build-up of deposits on the quartz tube, ensuring optimum UV dose at all times. A Photon control panel will provide the operators with data on flow rate, UV dose and intensity and can log up to one year’s performance data, which is downloadable to a PC via an RS323 port. The control panel can also be operated remotely, allowing the system to run 24 hours a day. Maintenance of the unit will be restricted to replacing the UV lamp once a year, a simple operation that can be carried out by on-site staff.

Chile is one of the three major salmon farming countries in the world, along with Norway and Scotland. In 2005, Chilean salmon exports were US$1.3 billion and it was expected to increase to US$2.2 billion by the end of 2006.

Cultivos Huacamalal is a new player in the Chilean salmon aquaculture industry. The company was formed by a number of experienced partners in the fish production and shipbuilding industry in Chile and has signed an agreement to supply product to one of the largest salmon exporters in the country.

To date Hanovia has installed over 300 aquaculture systems in 14 countries around the world. Applications include water treatment in hatcheries, fish farms (salmon, sea bream and sea bass) shellfish depuration tanks and fry rearing tanks as well as treating re-circulation water in marine parks and aquaria.

British UV disinfection company Hanovia has expanded its presence in China by appointing a Chinese Applications Specialist.

Dr Violet Feng, PhD, will support Hanovia’s Chinese sales team in defining the correct product configurations for UV disinfection applications, as well as evaluating test results to ensure the company’s product offerings are correctly matched to customers’ requirements. In addition, Dr Feng will undertake original research with a number of Chinese universities on UV kinetics and their application in reducing TOC (total organic carbon) in water treatment systems for high purity applications such as semiconductor and electronics manufacturing, and for photochemical applications such as chlorine removal, chloramine and ozone destruction. Finally, she will also help with preparation of sales and marketing support material.

A graduate of Fudan University in Shanghai, Dr Feng obtained a PhD in Physical Electronics in January 2006. Her research involved developing new types of UV light sources for environmental protection applications. She designed and developed new excimer UV lamps and successfully used them to degrade organic compounds in water, and toxic gas from air. As part of her research she published ten scientific papers in national authoritative journals.

After graduation she worked for PerkinElmer (Shenzhen) Ltd as a Senior Development engineer in its Centre of Excellence Department, mainly in the development of flash lamps.

A highly qualified, dedicated individual, Dr Feng brings valuable scientific expertise to Hanovia which will ensure the company maintains its position as a leader in UV technology applications.

Recent independent tests carried out at a UK leisure centre showed a dramatic reduction in TOC (total organic carbon), THMs (trihalomethanes) and combined chlorine in pool water following the installation of a Hanovia medium pressure UV system.

The tests were carried out by WRK Design and Services Limited, an independent chemical engineering consultancy specialising in contract research and development and pilot plant studies. They were conducted at the Lightwaves Leisure Centre in Wakefield.

The main objectives of the trial were to analyse swimming pool water samples for TOC, THMs, active/free chlorine and TDS (total dissolved solids) before and after the installation of a UV water treatment system.

In all cases, there was a significant reduction of TOCs, THMs, combined chlorine and TDS post-UV. Transmission* values were higher post-UV, indicating a reduction in suspended organic material (with correspondingly lower absorbance) as a result of UV. The lower combined chlorine levels also indicated lower levels of organic material, matching the higher transmission values. Chlorine reacts with organic material to form combined chlorine, so lower organics would result in less combined chlorine, lower absorbance, and therefore higher transmission.

Following the trial WRK concluded that, “The results of the analysis indicate that the medium pressure UV system at Lightwaves Leisure Centre was beneficial in reducing the TOCs and THMs to very low levels (~ 25 µg/litre) up to 14 days after installing the UV system.” The report also confirmed the reduction in combined chlorine was also significant.

* The condition of the water being treated will determine how well the UV light passes through it (UV transmittance).

UV disinfection specialist Hanovia has won a major contract to supply UV disinfection systems to a leading pharmaceutical manufacturer in China. The UV systems will be used for ultra-pure process water disinfection.

“This is our largest ever pharmaceutical order for the Chinese market and cements our position as one of the leading suppliers of UV disinfection systems to the global pharmaceutical industry. The support of our local Chinese representative was instrumental in Hanovia winning this contact.”

UV technology has many applications in the pharmaceutical industry, including process water disinfection, TOC (total organic carbon) reduction, ozone and chloramine destruction, and dechlorination.

UV systems are easy to install on existing pipework and require minimum disruption and site preparation. Depending on the level of use, the only routine maintenance required is changing the UV lamps every 12-24 months, a simple procedure that can be carried out by on-site personnel. Once installed, a plant can be kept operational 24 hours a day, without the necessity of shutting down the system for routine sanitation and sterilisation.