The first biogas-fuelled micro-turbine generator has been installed in a local sewage treatment plant in Hong Kong, effectively reduces greenhouse gas emissions.
Senior Electrical and Mechanical Engineer (Sewage Treatment) of the Drainage Services Department (DSD), Michael Yeung, held a media briefing in September to introduce the new technology.
Yuen Long Sewage Treatment Works (YLSTW) is the first sewage treatment works installed with a micro-turbine generator in Hong Kong. The installation works were commenced in mid-2012 and was completed in mid-July 2013.
The micro-turbine generator can generate 108,000 kWh electricity per annum, which is equivalent to the annual consumption by 12 four-member families, saving an annual electricity cost of $100,000. For greenhouse gas emissions, over 83 tonnes of carbon dioxide (CO2) emissions, which is equivalent to the CO2 absorption by 3,600 trees in a year, can be reduced.
In response to the policy objective of the department and a target of reducing the city’s energy intensity by at least 25% by 2030 (with 2005 as the base year) announced in a Policy Address in 2007/08, the micro-turbine generator will help to utilise renewable energy to generate electricity – and achieve a reduction in greenhouse gas emissions.
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