Dr. Howard Dryden is the founder of Dryden Aqua Ltd. The company was founded from his PhD research on molecular sieve ion exchange zeolitic sand filtration systems for closed system aquaculture, and development of intensive aquaculture technology. Dr. Dryden has unique knowledge combination of biology, chemistry and technology and is the inventor of the activated, bio-resistant filter media AFM®. Dr. Dryden is one of the world`s leading experts in sustainable water treatment and winner of multiple international awards in innovation and sustainability including: Member of the Scottish Government's Hydro-Nation Forum and Research and Communications Sub-Group, Member of EU Business and Biodiversity Platform, and Member of the CE100 SME group, Foundation for circular economy