Product category:
Filters and Centrifuges
News Release from: Berson UV-techniek | Subject: Berson InLine
Edited by the Processingtalk Editorial
Team on 11 June 2003
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
The Cyberport Development is a combined residential and business area at Telegraph Bay Twelve Berson InLine units were supplied to provide an alternative to the chlorine wastewater effluent disinfection previously used
This article was originally published on Processingtalk on 9 May 2003 at 8.00am (UK)
Related stories
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
WWTP UV effluent treatment to allow process re-use
Delfland Waterboard in the Netherlands has recently installed a Berson InLine 400+ medium pressure UV system, which allows disinfected effluent to be re-used as process water
Unlike disinfection using UV, chlorine use is associated with some health hazards and does not effectively control all microbes; Giardia and Cryptosporidium are just two examples of microbes that are destroyed by UV but not by chlorine.
The Cyberport sewage treatment plant uses a Chemically Enhanced Primary Treatment (CEPT) process, and is designed to handle peak flows of 25,000 cubic metres per day.
The UV disinfection system is installed downstream of the effluent channel of the sedimentation tank, and UV disinfected sewage is discharged to the sea through a submarine outfall.
This is the first time that UV disinfection has been applied to effluent from a CEPT plant in Hong Kong.
Designed to reduce E.Coli levels in the treated effluent to less than 20,000 counts per 100ml, the UV system contains 12 Berson InLine units, each containing 8 lamps positioned perpendicular to the process flow.
Quartz sleeves isolate the lamps from direct contact with the sewage and monitors in each unit enable measurement of transmittance.
Power levels may then be automatically controlled by the Berson PLC based controller, UVtronic.
UV was approved as the optimum choice for disinfection by the Drainage Service Department of the Hong Kong Government, after a successful pilot test at Stone Cutter Island wastewater treatment plant.
According to the installers of the UV equipment, Atal Engineering of North Point, Hong Kong, use of UV for wastewater disinfection is becoming increasingly popular in the region.
Raymond Chan, associate director, comments, "We have used UV in the past, but in the last couple of years more and more projects involving UV have been secured and our usage of UV is increasing".
In addition to the water industry, Atal has also supplied UV technology for use in food production.
UV is a non-chemical, highly effective method of disinfection.
Berson offers UV technology suitable for many applications from potable and wastewater disinfection to contamination control in fish farming and disinfection of sugar syrup for soft drinks manufacture.
• Berson UV-techniek: contact details and other news
• Email this article to a colleague
• Register for the free Processingtalk email newsletter
• Processingtalk Home Page
