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Sludge on the road for wastewater treatment? According to the World Bank, around 80 percent of the world's wastewater is discharged into the environment without adequate treatment. Wastewater treatment works (WWTW) are built to address this and treat wastewater before it is released back into the environment. However, over time, conventional wastewater treatment methods have more or less not changed. The treatment process typically involves four stages and integrates physical, chemical, biological, and combined technologies. Currently, novel solutions are being developed and commercialized, mainly targeted at the secondary and tertiary treatment phase, including approaches such as membrane bioreactors (MBRs), advanced oxidation processes (AOPs), and constructed wetlands as a nature-based solution. Furthermore, enhanced resource recovery of energy and nutrients (e.g., nitrogen; phosphorus) from sludge is explored via approaches such as anaerobic digestion (AD) for biogas production, microbial fuel cell (MFC) technology for electricity production, and struvite precipitation for phosphorus recovery. For these solutions, some headwinds are on their way. In the US, the Biden-Harris administration recently announced nearly $6 billion for clean drinking water and wastewater infrastructure, and water treatment and conservation startups raised $787 million in 2023, more than double the $343 million total funding raised in 2019, with companies such as Gradiant ($225 million Series D) and Allonnia ($30 million Series A) leading the stage. Still, enhancements in, among others, industry adoption timelines, government regulations, funding environments, and approval processes are needed for widespread industry implementation. → Dive into advanced wastewater treatment works (WWTW) with our latest Insights piece: https://t.ly/6iTR_ #WWTW #wastewater #climatetech #deeptech #deepsense #techduediligence #expertnetwork

No (waste-)drop in the ocean

No (waste-)drop in the ocean

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