Wastewater treatment can be a dirty job — but someone has to do it. At a Canadian wastewater treatment plant (WWTP) serving around 75,000 citizens, between 240 and 300 cubic meters of digested sludge are treated each and every day!
Known simply as “sludge,” biosolids are nutrient-rich organic materials left over from the wastewater treatment process.
Since this type of organic material from domestic sewage can’t simply be taken to the nearest garbage dump, biosolids must be managed to reduce or eliminate pathogens and minimize odors. They are therefore carefully monitored in accordance with regulatory requirements.