Technologies such as strategic recycling or biodigestion allow us to process waste and obtain different products, such as gas. Their implementation helps reduce the environmental impact of health care facilities.
Plastics for recycling - Nepal 2017. Photo credits: Ruth Stringer
October 7, 2019 was World Habitat Day, and this year’s theme was frontier technologies as an innovative tool to transform waste to wealth. Health Care Without Harm is currently working with hospitals in Latin America, South and South East Asia, and Africa to deploy innovative technologies and practices to help them reduce their waste and treat it sustainably.
Several of the countries where Health Care Without Harm works don’t have fully functioning waste management systems, so it’s not uncommon for infectious or hazardous waste from the hospitals to end up on the streets awaiting collection, to be burned in the open, or to be sent to open dumpsites.
Technologies such as strategic recycling or biodigestion allow us to process waste and obtain different products, such as gas. Their implementation helps reduce the environmental impact of health care facilities.
This is often the situation in Nepal, where HCWH has been working with strategic partners as Health Care Foundation Nepal (HECAF) for over 10 years. Informal recyclers would even come to the hospitals looking for plastics and other waste materials to sell.
Instead, partner hospitals now carefully segregate the waste so that it can be treated and disposed of appropriately, which includes using autoclaves to steam disinfect infectious materials and biodigestion for organic materials.
Over the years, recyclers have come to realize the value of the wastes from these hospitals, and the range of materials that can recycled has increased to include paper, glass, metals and several types of plastics. Even syringes, which have their needles and tips cut off at the point of use, can be processed into different products by recyclers.
Mahesh Nakarmi, Director of the Health Care Waste Project at HECAF, Health Care Without Harm partner in Nepal, says this is particularly important. “In the past we have found used syringes that have been repackaged and sold again to unknowing customers. Cutting the syringes means that they can’t be used again and once they are disinfected their high quality plastic is very attractive to recyclers”.
Biodigestors. Credit: Ruth Stringer.
Biodigestion is also revolutionizing the way hospitals in Nepal handle their waste. Biodegradable waste including food scraps, and even placentas or tissues from operations used to be mixed with general waste, attracting vermin that could spread disease. Now biodigesters turn all this into biogas which can be used for cooking or water heating, reducing fossil fuel use and saving money.
Recycling and biodigestion both reduce the costs of waste disposal, says Ruth Stringer, International Science and Policy Coordinator at Health Care Without Harm Global, and one of the organisation’s waste experts. Not only is there less waste that needs to be disposed of, but good quality plastics can be worth over 30 US cents per kilo and the biogas generated from organic waste can be worth two cents for every kilo of waste treated. Even so, says Stringer, that’s not the biggest benefit.
“Preventing air pollution from incineration, keeping infectious materials out of the general waste stream and maximising recycling all make our cities cleaner, more pleasant to live in, help prevent climate change and reduce the threat to worker and public health from improperly treated healthcare waste. The value of that is incalculable”, she adds.