Treatment and disposal of septage is a problem in many countries including Scandinavia. During the early part of the seventies research projects were initiated to find reliable data on both quantities and characteristics of septage in Norway. During the last part of this period several full scale demonstration plants with septage addition were investigated. Information from these projects was used to establish national guidelines on septage handling and disposal. Today both co-treatment of septage and sewage and independent treatment of septage are used throughout Scandinavia. Several plants also include separate treatment of septage liquor. Mobile septage dewatering trucks are also on the Scandinavian market today. These systems are now considered as being proven technology and they give the municipalities a new alternative to solve the septage problem.

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