The AOT,process has a potential to save energy,increase energy efficiency in heat and power generating equipment and make possible the reuse of waste water and recovery of finite resources in the existing and new built environment.The AOT process is a way of producing hydroxyl radicals without the addition of any chemicals.Just the way nature itself does it.With technology able to control legionella at temperatures lower than 50℃ many means of energy conservation opens up Large amounts of water can be saved using the technology in pools and spas.The brought about decrease in THM will reduce the necessity to back flush especially sand filters.Installations were done in a public swimming bath in 2003 in Stockholm,Sweden,and is still working fine with considerable yearly savings.The humane urine contains nutrients that are of great interest.The two most important are nitrogen and phosphorus.They are both essential for all types of plants and we take in these substances through the food we eat.The wastewater on the other hand poses a problem since it contributes to the eutrophication of lakes and seas.So while there is talk of a lack of nutrients in the future world of agriculturewe are at the same time trying to destroy the very same nutrients in our sewage treatment plants.A urine fraction isolated at the source is a pure and nutritious liquid,except for pharmaceutical residues and small amounts of bacteria.Consequently multiple purposes would be achieved if humane urine was isolated and treated separately.