Abstract: According to a first aspect of the present application, a self-cleaning sectional panel tank is provided. The tank comprises at least one side wall for joining other side walls in forming the sectional panel tank. The at least one side wall comprises: a first unit panel having a first extension at its edge for supporting the first unit panel; and a second unit panel having a second extension at its edge. The first unit panel and the second unit panel are joined together contiguously at the first extension and the second extension by at least one fastener; and at least one directional sprinkler nozzle connected to the at least one side wall configured to discharge a cleaning and/or disinfectant solution onto interior surfaces of the self-cleaning sectional panel tank.

Abstract: A sectional panel tank comprises one or more side wads that are joined together in forming the sectional panel tank. One of the side wall comprises a first unit panel having a first extension at a first edge of the first unit panel and a second unit panel having a second extension at a second edge of the second unit panel. By combing the second extension to the second extension, the second unit panel is joined to the first unit panel for providing a continuous surface of the side wall. No gasket is needed between the first extension and the second extension. A method of making the sectional panel tank is also disclosed. A method of making prefabricated unit panels with lining sheets is further disclosed for the sectional panel tank.