Ceramics industry uses a large quantities of water for various activities like raw materials mixing and grinding, slip production, washing, etc.
After processes like the above, a large quantity of water is collected as waste water which should be treated before reuse of released to the environment.
Therefore, a ceramic factory is always equipped with an Effluent Treatment Plant which process the waste water and produce clean water. The process also create a solid sludge extracted from the waste water. After a sedimentation and a filter pressing process, the sediments are collected as lumps, which some may use the name "ETP Cake".
