Abstract: The disclosure is related to toilet tank valve structures and methods of waste treatment. The toilet tank valve structures contain a primary and a secondary valve actuation to support a full discharge for solid waste and a partial discharge for liquid waste. The disclosure is also related to a toilet tank valve structure for providing a limiting device for partial discharge. Further, the disclosure of the toilet tank valve structure is related to limit the physical size of the dual flush actuator by fitting the actuator with a remote, secondary, actuation module, thereby reducing the physical size of the primary actuator for easy retrofit in existing toilet tanks.