EU legislation focuses on a number of critical control points during the processing of sewage sludge. A key aspect of the legislation is the requirement for traceable, individual monitoring of temperature, mixing and content in order to achieve the destruction of harmful bacteria present in the sludge. It is also necessary to measure and record the retention time for the process to ensure that any organic matter has been treated for the correct period for it to be made completely safe. This information is needed in order to provide evidence of compliance with the legislation.
