Skip to main content

Hong Kong implements emission reduction

Manufacturer of emissions reduction systems, Eminox, is to take part in a US$4.5 million project to reduce NOx pollution in Hong Kong. The scheme will see buses retrofitted with the latest in emission control technology to help make Hong Kong a safer environment to live and work. Hong Kong’s Environmental Protection Department (EPD) aims to upgrade 1,400 buses with retrofit selective catalytic reduction (SCR) technology to dramatically reduce NOx. A pre-qualification programme is currently taking place,
January 30, 2015 Read time: 2 mins
Manufacturer of emissions reduction systems, Eminox, is to take part in a US$4.5 million project to reduce NOx pollution in Hong Kong. The scheme will see buses retrofitted with the latest in emission control technology to help make Hong Kong a safer environment to live and work.

Hong Kong’s Environmental Protection Department (EPD) aims to upgrade 1,400 buses with retrofit selective catalytic reduction (SCR) technology to dramatically reduce NOx.  A pre-qualification programme is currently taking place, in which Eminox, as one of four suppliers, has retrofitted 23 buses with SCR systems, effectively achieving a full SCRT system. The company says the systems are delivering NOx reduction well beyond the 60 per cent scheme requirement.

Steve Rawson, head of retrofit engineering at Eminox, commented: “We are delighted to be involved with such a high-profile international project to tackle on-street pollution in Hong Kong. By retrofitting the existing fleet of buses, we can improve air quality in an area which urgently needs attention – without the high costs associated with replacing an entire fleet. Our SCR technology delivers proven real world NOx reduction that can make a real difference to air quality.”

In a bespoke project approach, engineers monitored the temperature at which the buses were operating and measured the packaging envelope using laser scanning, then designed the system to exceed performance targets. Eminox produced different system designs to fit the limited space envelope on a variety of buses.

Fitting of the systems by Eminox applications engineers began in October 2014 and spanned a period of 32 days. Real-world NOx reduction is continuously monitored using sensors fitted to the buses and will continue over the 12 month trial period.

Related Content

  • December 1, 2015
    VW scandal prompts emissions testing debate
    In the wake of the VW scandal John Kendall looks at emissions testing on both sides of the Atlantic. Since the VW emissions story broke in September, emissions testing has come under greater scrutiny, and none more so than in Europe, where critics have long been highlighting the weaknesses of the testing system. Ironically, changes to the emissions testing process were already under review but the story has pushed it up the agenda.
  • July 20, 2015
    New report indicates reduction in London’s pollution
    A new report, produced by experts at King's College London, for the first time quantifies the health and economic effects of the air pollutant nitrogen dioxide (NO2), where all previous studies have focused on particulate matter (PM2.5). Combined together the effects of both pollutants reveal a higher health impact than previously estimated after taking into account this further pollutant. The study also found that nearly half the health impacts are caused by air pollution outside London such as diesel
  • November 2, 2016
    ‘Green bus’ guide launched
    The Low Carbon Vehicle Partnership (LowCVP) has launched the Low Emission Bus (LEB) Guide, which aims to be a vital reference for bus operators and local authorities, providing an overview of the benefits of a range of low emission fuels and technologies that reduce both air pollution and greenhouse gas emissions. The Guide is intended to equip bus operators and local authorities with information to aid purchasing decisions, and encourage the adoption of the most appropriate low emission bus technology a
  • February 2, 2012
    Carbon finance delivers critical support to mass transit schemes
    David Crawford investigates carbon finance in transport. World Bank carbon finance grants are delivering critical support to major mass transit deployments in emerging and developing economies. Only recently operative in the transport sector, the Clean Development Mechanism (CDM, see panel) is designed to generate additional income streams and improve internal rates of return on projects funded from public- and private-sector sources.