DID YOU KNOW that a food digester system digests food waste from CGH’s centralised kitchen, producing products such as non-potable water, which is then used for other purposes such as cleaning the floors of the bin centre?
Recognising the pivotal role that the hospital plays in safeguarding not only human health, but also environmental health, CGH takes proactive measures to integrate green practices in its operations. As the impact of climate change becomes more evident, CGH has embraced eco-friendly energy alternatives, reduced the generation of pollutants and implemented ways to optimise resource usage — all while continuing to deliver the best patient care.
Converting heat from chillers
CGH utilises a heat recovery system for its hot water supply system, which has replaced gas-fired heaters since 2002. The heat recovery system recovers waste heat from the campus’ air-conditioning system and uses it to heat the hospital’s water supply.
Harnessing the power of the sun
In 2014, CGH installed solar panels on the rooftops at the Medical Centre and The Integrated Building, generating some
50 MWh per annum, equivalent to the energy required to power eight average households for a month.
CGH has been tapping on solar power to reduce carbon emissions.
Boosting electric vehicle (EV) support
To increase the adoption rate of environmentally-friendly EVs:
In support of the “One Million Trees Movement”, CGH planted new trees across its campus, adding to the lush greenery.
Garcinia trees are planted throughout the CGH campus.
One of CGH’s latest environmental sustainability initiatives is the recycling of polyvinyl chloride (PVC) intravenous (IV) fluid bags that are empty and uncontaminated. In 2023, CGH partnered with a recycling company, which collects the uncontaminated PVC waste produced by CGH’s operating theatres and Emergency Department for recycling.
At CGH, rainwater is harvested for landscape irrigation and the general washing of the hospital premises.
Award-winning sustainable environment
CGH’s Medical Centre and The Integrated Building (IB) received the Building and Construction Authority (BCA) Green Mark (Platinum) for their outstanding achievements in environmental sustainability in the built environment.
DID YOU KNOW that anaesthetic gases used during surgeries have environmental effects? One such anaesthetic gas, desflurane, is a potent greenhouse gas with high global warming potential. When released into the atmosphere, it does not break down, exacerbating climate change. It is estimated that desflurane’s global warming potential is 2,500 times greater than carbon dioxide!
In caring for the environment,
CGH’s Department of Anaesthesia & Surgical Intensive Care has actively reduced its desflurane usage', opting for a more environmentally-friendly and sustainable alternative — sevoflurane, using lower fresh gas flows to minimise anaesthetic gas use, and using intravenous anaesthetic (propofol) or regional anaesthesia where appropriate. These are achieved through the engagement and education of both junior and senior staff, and using posters and notes to remind them about the environmental impacts of desflurane, as well as cover other sustainability topics in the field of anaesthesia.
Through extensive efforts over the past three years, CGH’s annual usage of desflurane has significantly reduced from
242L in 2019 to
76L in 2022 —
a whopping 69% reduction! This translates to a reduction in the hospital’s CO2-equivalent emissions from desflurane by an estimated 1,037 tonnes in the three years, taking the equivalent of 15,000 cars travelling from Singapore to KL off the road. In terms of total anaesthetic gases used in surgeries across CGH, the proportion of desflurane used decreased by 50% between 2020 and 2022.
The usage of
“desflurane (at 1L per min flow rate) over 1 hour results in the same amount of carbon emissions as driving a car for 300km. That is about the driving distance from Singapore to Kuala Lumpur, Malaysia!
In comparison, using the same amount of
“sevoflurane results in carbon emissions produced from driving a car for only 6.5km!
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