... amount of dosing, and look at adjusting in the running. See fewer sedimentation tanks alum, and dark, the dosing volume ... chlorideA, drum-type polyaluminum chloride content in General, water insoluble high, usually used in wastewater treatment.B, plate-and-frame ... type poly high aluminum chloride content, insoluble matter in water, wastewater treatment and drinking.C, spray drying poly high ...