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News Release from: Berson UV-techniek | Subject: Berson InLine UV
Edited by the Processingtalk Editorial
Team on 09 May 2003
Major water reclamation plant uses UV
technology
Berson UV-techniek has won the contract to supply ultraviolet (UV) disinfection systems for one of the largest municipal wastewater treatment systems to be installed in the United States
The equipment will be supplied and installed through the Berson sister company Aquionics The UV systems are for the Sutton Water Reclamation Facility in Cobb County, Georgia, which is being completely rebuilt to deal with increased demand and, when completed, will have the capacity to handle peak flows of 15,800 cubic metres/hour
This article was originally published on Processingtalk on 28 Feb 2003 at 8.00am (UK)
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Simple UV disinfection systems
The BersonInLine range of powerful ultraviolet disinfection systems from Berson UV-techniek can provide permanent disinfection of harmful micro-organisms in drinking water, process water and effluent
Bugs killed by medium pressure UV stay dead!
Bacteria and many other micro-organisms contain enzymes that can repair UV-damaged DNA, a process known as 're-activation': research shows this does not occur with medium pressure UV disinfection
The UV plant will consist of 14 Berson InLine UV units, with space for four additional units for future expansion.
Each unit will contain eight medium pressure Berson MultiWave lamps - these high intensity UV lamps emit a wide spectrum of UV wavelengths which act not only on the microorganism DNA but also on other molecules like enzymes, resulting in scientifically proven non-repairable cellular damage.
Because of their small size, Berson MultiWave lamps can be positioned perpendicularly to the fluid flow, increasing disinfection efficiency and reducing the overall size of the disinfection chamber.
Further reading
Hong Kong chooses UV wastewater treatment
Berson UV-techniek has supplied a complete UV disinfection system to a wastewater treatment plant in Hong Kong, for treating sewage from commercial and domestic buildings on the Cyberport Development
Microbial repair mechanisms after UV treatment
Ben F Kalisvaart, the microbiological specialist for Berson UV-techniek, compares the microbial repair mechanisms occuring after treatment with low pressure and medium pressure UV lamps.
It also allows them be installed directly in-line with the existing pipework, eliminating the need for extensive additional piping associated with conventional UV systems.
A comparable installation using low pressure UV technology would need about fifteen times as many lamps.
All the units will be fitted with UV monitors and a supervisory PLC system, which will control the operation of the entire system, even allowing control and servicing of individual lamps.
The installation will also be provided with a digital link to the SCADA operating system of the wastewater facility, enabling remote control.
Local regulations were a major factor in the decision to use UV.
There are future plans to dispose of the wastewater in drinking water basins, so chlorine levels need to be lowered wherever possible to preserve the taste of the drinking water, and also due to concerns about the possible health hazards of chlorine.
"We are excited to be implementing this environmentally friendly technology," commented Tom Bailey, Chief Engineer for Cobb County.
"Ultraviolet technology provides a high level of safety and reliability without any of the drawbacks of using chemicals," he added.
There are a wide variety of Berson InLine models to suit many different applications.
The latest addition, the Berson InLine 35000, is powerful enough to disinfect water or effluent with a theoretical flow rate of 35,000 cubic metres per hour - far in excess of any flow rate encountered in industry.
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