Going green

PUBLISHED : Wednesday, 09 June, 2010, 12:00am
UPDATED : Wednesday, 09 June, 2010, 12:00am

An assistant director of the Drainage Services Department checks the growth of vegetation planted on a wall at the Sha Tin sewage treatment plant yesterday, part of an experiment evaluating the ability of vertical greening, or green walls, to ease the heat island effect. Tsui Wai said the department had spent HK$11 million on the greening of all sewage treatment facilities in the city this year. Photo: Dickson Lee