40 Water/Wastewater West Hanoi Crowne Plaza Trusts its Drinking Water to UV Disinfection
Hanovia’s (UK) 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.
“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.
“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.
“Get the Most from your Deployment”
“Reduce your carbon footprint” is a phrase we hear more and more lately and there are numerous different ways to achieve this. One is to cut out carbon heavy applications, another is focused around reduction. Sometimes, however, reduction or removals are not an option. In these cases it’s all about making sure you get the most from your application.
Multiparameter water monitoring probes help you to collect the largest volume of data during a single visit / deployment; none more so than the AP-2000 Aquaprobe
from Aquaread (UK). This system allows users to capture all of the standard parameters found frequently on this kind of small 2” diameter probe (pH, ORP, EC, Optical DO and Temperature), but then it allows you to add further parameters, such as Depth, an ISE sensor such as Ammonium or Nitrate and finally an optical sensor such as Turbidity or Chlorophyll. No other 2” diameter, portable, instrument allows this level of data capture.
This probe, when combined with the GPS Aquameter, which records the precise location of your dataset via built in GPS, provides users with the maximum amount of data in a single round of monitoring. This enables people to get the most from their deployment and potentially reduce their carbon footprint.
Reader Reply Card No. 114
One of the Hanovia UV system during installation at the Crowne Plaza Hotel, West Hanoi
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.”
Reader Reply Card No.
Flat Sensor pH, Conductivity and Ion Compact Meters Improvements
After more than 25 years manufacturing the Cardy series compact meters, with patented flat sensor technology, HORIBA (UK) is launching its latest generation - the LAQUAtwin.
The LAQUAtwin range is made up of a wide selection of pocket size meters equipped with HORIBA’s exclusive flat sensor technology. The range of meters can measure pH, conductivity, salt (NaCl) and nitrate, sodium, potassium and calcium ions.
The sensor utilises the same measurement principle as traditional electrodes but the LAQUAtwin meters require only a single drop (0.3 ml) of sample to enable quick and accurate measurement, ideal when the sample size is critical.
The wide measurement range allows direct measurement, making sample dilution unnecessary. These reagent-free meters can be calibrated in 1 or 2 points and feature automatic temperature compensation functions. The LAQUAtwin sensors are suitable for many different types of micro samples, such as liquids, pastes, powders and solids. At the end of the sensor’s useable life, it can simply be replaced; you don’t need to replace the complete meter.
The waterproof casing (IP67 rated) allows robust measurement even in wet conditions so these meters can be safely dipped to measure large volume samples.
User-friendliness and reliability are key benefits, making these meters ideal for onsite and field-testing. They are designed for professionals, working in a laboratory or on production sites, as well as for personal use.
The pH and conductivity meters are suitable for measuring basic properties of water in various industrial sectors while the salinometers are particularly useful for checking the salt content of food. In agriculture, the meters are ideal for quick on-site diagnosis of soil and plant sap characteristics to improve fertilisation and crop yields.
Reader Reply Card No.
Continuous In-Line Density Meter Launched for Wastewater Industry
SCIAM Worldwide (USA) has introduced an innovation set to transform density measurement of slurries within the water and waste industry. The in-line, continuous density meter, DM3, calculates density by measuring direct mass over a known volume within a flow tube. By directly calculating density rather than inferring or estimation, this technology improves the accuracy, value for money and environmental viability of sensor and mass flow systems. The DM3 has proven to be safer and more cost effective than hazardous nuclear techniques or inefficient auto-sampling within any slurry processing operation.
The DM3 effortlessly measures abrasive media thanks to its highly resilient gum-rubber lined flow tube with customisable options for high pressure and extreme temperature applications. Designed for optimal use within water and waste applications, the DM3 provides continuous readings of the slurry, which occur 110 times per second with a 45 millisecond data response time giving a truly representative sample of production volume and efficiency data.
Early adopters include industry leaders looking to improve their bottom line by utilising SCIAM’s cutting edge technology. An example of the systems use is the dry mass flow measurement of wastewater as it is transported from waste lagoons to geotextile tubes for dewatering. By replacing auto samplers, early adopters benefit from an exponential increase in accuracy and efficiency.
Each unit is custom designed and manufactured within the United States and distributed throughout the globe. Certified by CE, UL, NTEP and IECEE with directly NIST traceable measurements, this proven technology is positioned to be the industry’s leading density measurement instrument.
Reader Reply Card No. 115 Reader Reply Card No. IET November / December 2012
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