... 9 3.Appearance: dark yellow powder Polyaluminium Chloride for drinking waterPurity: 30% ItemRoller dried process Normal ... a broad variety of uses. 1, purified drinking water, sewage; 2, industrial water purification, industrial wastewater, mining, oil field injection water, making water ... washing, leather and all kinds of chemical waste water treatment; 3, industrial application; paper sizing, printing ...