Creating a Heavenly Spa with UV Disinfection

Westin Resort’s ‘Heavenly Spa’ in Bali chooses Hanovia UV technology

Located in Nusa Dua, Bali, Westin Resort’s luxurious Heavenly Spa includes wet treatment rooms with steam showers, a hair salon, an indoor lounge and separate male and female wet areas with salt saunas, aroma steam baths and vitality pools.


As the water treatment regime in spas is so exacting, ultraviolet (UV) disinfection is often used as the cleanest technology available. Not only does UV destroy harmful microorganisms in the water, enabling controlled chlorination that avoids adverse dosing, it also breaks down the irritant chloramine by-products of the treatment process. This ensures the air around the spa is clear, without the industrial ‘chlorine’ smell often associated with heavily chlorinated water.

Based on extensive experience providing UV systems to high-end spas, Hanovia was selected by Barr+Wray, the main contractor, to provide the UV disinfection system for the Heavenly Spa. Barr+Wray also installed equipment for the pool plant and pool attractions, as well as the salt saunas, aroma steam baths and VIP steam showers. The Hanovia system features an automated wiping system that cleans the system and prevents the build-up of residues on the UV lamp.

Adding UV to the spa’s water treatment regime not only gets rid of harmful chlorine by-products but also saves money on the reduction of chlorine used. This reduction in chlorine usage is a real benefit, as it potentially reduces costs and makes the backwash water discharge more environmentally friendly. Added to that, UV-treated water is demonstrably clearer and there is less wear and tear to building structures from unwanted chlorine by-products.

Completed in December 2013, the Heavenly Spa is already winning awards. It was voted Country Winner in the Best Luxury Wellness Spa in the 2014 World Luxury Hotel Awards and also came in as a finalist in the Best Luxury Day Spa category.

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Food, Beverage, Pharma and Leisure Industry companies flock to Hanovia’s UV Seminar in Indonesia

Offering ideas and practical advice on using UV for industrial water bio-security, the day proves a real hit

Following the enthusiastic response to Hanovia’s inaugural UV seminar held in Dubai last year, the company hosted its second seminar in Jakarta, Indonesia last month. The event was packed with ideas, practical advice and in-depth analysis on the use of UV for bio-security in the food, beverage, pharmaceutical and leisure industries.

Food, Beverage, Pharma and Leisure Industry companies flock to Hanovia’s UV Seminar in Indonesia

Food, Beverage, Pharma and Leisure Industry companies flock to Hanovia’s UV Seminar in Indonesia

The seminar attracted key international and local companies from the food, beverage, pharmaceutical and other industries, including the swimming pool, leisure and hotel industries. The presentations delivered key industry benefits on using UV and the latest industry standards. There were also hands-on demonstrations of the latest UV systems and one-to-one consultation with representatives from Hanovia and PKMG, Hanovia’s representative in Indonesia.

The seminar received an overall 5 Star rating from attendees, with 100% agreement on it being a ‘very informative and educational event’ which provided something for everyone. Sales Director Tim McDougle commented: “Asia, and particularly Indonesia, is a target growth market for all industries, especially food, beverage and pharmaceuticals. By attending this educational seminar all the attendees have learnt about the latest UV developments and UV’s importance in ensuring bio-security for their products.”

Also covered during the day was a demonstration on Hanovia’s Performance Qualified (PQ) UV systems, which have been third party validated specifically for the food, beverage and pharmaceutical industries. It was shown how these systems offer step-change improvements in process security and ensure better quality water in critical, high purity applications.

Hanovia is already planning the next seminar – stay tuned for more information!

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Hanovia Appoints new Technical Director

UV disinfection specialist Hanovia has appointed Mark Aston as its new Technical Director.

Mark Aston, the new Technical Director at Hanovia.

Mark Aston, the new Technical Director at Hanovia.

Mark has over 25 years’ experience in developing profitable products from innovative technology.  He has held senior director roles in engineering companies operating in the electro-optical and bespoke engineering market sectors, including traditional and solid-state lighting technologies.

His role in Hanovia will be to implement new technology and product development programmes as well as consolidate planning for continuous improvement of Hanovia’s unique range of UV treatment products.

Mark has a BSc (Hons) in Physics and Astrophysics, a DSc in Optical Physics and is a Chartered Physicist and Honorary Research Fellow of University College, London.

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Novotel Saigon Centre in Vietnam Chooses Hanovia UV Technology for Service Water Disinfection

Novotel’s flagship Saigon Centre hotel in Ho Chi Minh City, Vietnam, has recently installed six Hanovia UV disinfection systems for service water treatment. The UV systems kill any microorganisms from the incoming city water supply, leaving it good enough to drink. All the UV systems provide a minimum 99.999% reduction in E.coli, Cryptosporidium, Giardia, Legionella and other harmful microorganisms.

Two of the Hanovia UV disinfection systems installed at the Novotel Saigon Centre

Two of the Hanovia UV disinfection systems installed at the Novotel Saigon Centre

(Two of the Hanovia UV systems installed at the Novotel Saigon Centre)

Tourism is a flourishing industry in Vietnam, with over a third of all visitors coming from Europe, where water quality is taken for granted. Currently, only 22% of hotel guests are Vietnamese, with 34% from Europe, 8.6% from North America and 9.5% from Oceania [1]. Having water of a drinking quality standard is therefore a high priority for the leading hotel chains operating in Vietnam.

Microbial control in hotel and other building service water is a serious but easily overlooked problem. Hong Kong’s new government headquarters, for example, were recently contaminated by Legionella, which resides in buildings’ water cooling towers and pipes [2]. The same microbes were also found in other buildings in Hong Kong [3]. Most recently, three children at a Hong Kong school were infected by Staphylococcus aureus, a common water-borne bacteria. An update of the school’s water disinfection system is now required [4].

“Hotels across the Asia-Pacific region are now taking extra precautions to ensure their water meets the World Health Organisation’s drinking water quality guidelines and to ensure their guests’ health and safety,” commented Hanovia’s Asia Pacific Manager Ying Xu.

“Even though hotel tap water is not intended for drinking purposes, UV provides that extra level of health and safety for residents in case they inadvertently drink the water, such as while brushing their teeth, or inhale water aerosol while showering. UV is in fact the WHO’s recommended disinfection method for Cryptosporidium and Giardia removal. It is already widely used to remove both microorganisms from water supplies in the European Union and United States. Water standards in Vietnam do not include Cryptosporidium and Giardia [5], but the Novotel chain sees the importance in conforming to the WHO’s standards,” she concluded.

Traditionally, hotel water in Vietnam has been treated with chlorine. While this kills most microorganisms, it is ineffective against Cryptosporidium and Giardia, both of which are extremely hazardous to human health, causing severe diarrhoea, vomiting and fever, which can last for a month or more. Water treatment experts were unaware of the limitations of traditional chlorine disinfection until recent years. Chlorination can also affect the taste and smell of water if doses are too high.

In this installation, six, single-lamp AF3 amalgam UV systems are installed on the hotel’s roof, treating water flows between 26.5 m3/h and 30 m3/h. City water passes through sand filters before storage in roof tanks, from where it passes through the UV systems prior to distribution to every room in the hotel. These UV systems are very small and can be installed in the tightest of places.

A major advantage of using UV is its low operational cost. For example, 166 m3/hr of water is treated at the hotel. As the six UV systems only consume 1.62 kW of power between them, for every 1 m3 of treated water, the UV system consumes less than 0.01 kWh of power, which is approximately 0.1 US cents per m3.

Commenting on the installation, Hanovia’s Managing Director John Ryan said: “This is yet another successful hotel project and reinforces our expertise as suppliers of UV technology that can be used across the board: from potable-standard water in hotel rooms to chloramine-free water in hotel pools and spas.”

About Novotel
Part of the global Accor group, the Novotel chain has almost 400 hotels and resorts in 60 countries, situated in the business districts and tourist destinations of major international cities. All Novotel hotels are involved in EarthCheck, the worldwide environmental management and certification programme [6]. As of the 22nd of May 2012, 278 hotels are committed, 134 hotels are benchmarked and 109 are certified.

[1] Grant Thornton (Vietnam) Ltd., Vietnam Hotel Survey 2012, P 7
[5] National technical regulation on drinking water quality. QCVN 01:2009/BYT

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Hanovia’s Dubai SwimLine Launch a Huge Success

Hanovia successfully launched its SwimLine and other UV disinfection systems at an event in Dubai last month. Over 50 visitors from the region, including journalists and representatives from some of the world’s leading hotel chains, attended the day-long event, where they learnt the benefits of using UV to treat swimming pools and spas.

Hanovia’s Dubai SwimLine Launch a Huge Success

Hanovia’s Dubai SwimLine Launch a Huge Success

With over 85 years’ experience in UV technology, Hanovia used its knowledge and experience to educate the attendees on the real benefits of using UV for treating their pool water. The event was also supported by a third party consultant, Ian Nicks, from the Pool water Treatment Advisory Group (PWTAG). Ian was able to provide a more independent view on the benefits of UV for pool operators.

Hanovia’s SwimLine UV system is a low footprint, low maintenance and, more importantly, an environmentally friendly way of ensuring pool and spa water is free from harmful microorganisms. It offers twofold protection for pool operators: water disinfection and the removal of combined chlorine. More importantly, because SwimLine dramatically reduces the amount of chlorine required, there is correspondingly less backwashing and dilution, less waste and notably purer water. The air around the pool is also much more pleasant – a significant factor for enclosed, indoor pools.

Attendees scored the event 5 out of 6 in a post-event survey, with all saying it was well worth attending. Comments included, “A valuable seminar for maintaining pools, and good hosts” (Hi-Tech Water Technologies LLC, Dubai) and “6 out of 6” (Le Meridian, Dubai).

The day was such a success that Hanovia is planning another one in 2013, with the location still to be confirmed. The event co-hosted by Hanovia’s local distributor, Water & Environmental Technologies.

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West Hanoi Crowne Plaza Trusts its Drinking Water to Hanovia UV

Hanovia’s UV technology is disinfecting drinking water for the Crowne Plaza Group’s flagship five star West Hanoi hotel in Vietnam. The UV systems remove potentially harmful microorganisms from the incoming city water supply, in line with WHO* guidelines for drinking water quality. All the Hanovia UV systems are designed to provide a minimum 99.9% reduction in E.coli, Cryptospiridium, Giardia and other harmful microorganisms.

One of the Hanovia UV system during installation at the Crowne Plaza Hotel, West Hanoi

One of the Hanovia UV system during installation at the Crowne Plaza Hotel, West Hanoi

(One of the Hanovia UV system during installation at the Crowne Plaza Hotel, West Hanoi)

“Although Hanoi’s city water supply is normally free of E.coli, the design consultant for the Crowne Plaza specified UV disinfection for its five star hotels in Vietnam to ensure all water meets the WHO’s drinking water quality guidelines,” commented Hanovia’s Asia Pacific Manager Ying Xu. “In this way the hotel group is providing an extra level of health and safety for its residents,” added Ying.

The Crowne Plaza Hotel, West Hanoi

The Crowne Plaza Hotel, West Hanoi

(The Crowne Plaza Hotel, West Hanoi)

“We selected Hanovia’s UV systems for this installation because of the company’s high brand recognition as a supplier of quality, high-end UV systems,” said a spokesperson from STD&S Co., Ltd, Hanovia’s exclusive Vietnam distributor.  “The hotel group is so satisfied with the performance of the UV systems that it has ordered more units for another hotel currently under construction in the Vietnamese coastal city of Nhan Trang,” the spokesperson added.

10 UV systems are installed in the West Hanoi hotel: four PMD medium pressure UV units and six AF3 amalgam UV units, with flow rates ranging from 162m3/h down to 5m3/h. One of the AF3 systems disinfects water for the hotel’s restaurant; the other nine treat water for all the hotel bedrooms, apartment complexes and offices.

All the UV systems treat water from a storage tank that has passed through a water softener and sand filter. Water passing through the UV system serving the restaurant also passes through a RO (reverse osmosis) filter immediately prior to UV disinfection, offering an additional level of protection.

Additional benefits of Hanovia’s UV technology mentioned by the contractor include low maintenance; ease of use; low operating costs; no high-temperature issues with the AF3 systems, which are quite capable of handling high water temperatures; and the multi-functionality of the PMD systems’ control systems, which are easily integrated with bleed valves to control water temperature.

Commenting on the installation, Hanovia’s Managing Director John Ryan said: “This is an interesting installation for Hanovia. Many of our existing hotel installations are for swimming pools and spas, but our expertise in providing UV water disinfection systems for high purity applications in the pharmaceutical, food and beverage industries means we are well-placed to provide similar systems for water treatment in hotels or other public buildings.”

The WHO describes UV radiation as “biocidal between wavelengths of 180 and 320 nm. It can be used to inactivate protozoa, bacteria, bacteriophages, yeast, viruses, fungi and algae.” More information is available in this microbial fact sheet (PDF).

* World Health Organisation

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