Pre-treatment products are materials separated from blackwater, brownwater, greywater or sludge in preliminary treatment units, such as screens, grease traps or grit chambers. Substances like fats, oil, grease, and various solids (e.g. sand, fibres and trash), can impair transport and/or treatment efficiency through clogging and wear. Therefore, early removal of these substances is crucial for the durability of a sanitation system.
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