Biosolids â âNever Ending Problem' Or Increasing Opportunity? Recycling biosolids from the wastewater treatment process is one of the most sustainable ways of achieving a regenerative, circular economy that eliminates waste and enhances the environment. It was also the theme of the latest Water Action Platform webinar that took place on 18 February. Hosted by global technology and business consultancy Isle, the webinar looked at innovation in biosolid management and how it can help the water sector meet regulatory targets and deliver benefits for customers and the environment. The theme of cyber-security was also picked up, following the breach at a Florida treatment works.