1. A flocculation dosing system comprising:a mixing chamber configured to receive wastewater and flocculant material, the mixing chamber configured to mix the wastewater and the flocculant material together to form a compound solution;
a conveyor that receives the compound solution, a liquid content of the compound solution decreasing as the conveyor moves the compound solution from a first end of the conveyor toward a second end of the conveyor; and
a surface sensing assembly in communication with the conveyor, the surface sensing assembly including
a light source directing a light beam toward the compound solution on the conveyor, the light beam forming a scan line on the compound solution,
a photo-detector capturing an image of at least a portion of the scan line interacting with the compound solution, and
a controller coupled to the light source, the photo-detector, and at least one actuator, the controller configured to determine an indication of surface topography of the compound solution based on a characteristic of the scan line from the image, the controller also configured to control the at least one actuator to adjust a characteristic of the compound solution based on the indication of surface topography.