👉 In chemistry, a coagulant is a substance that causes or enhances the dissolution of other substances. These substances are typically used in water treatment processes to remove dissolved solids and make the water more alkaline or acidic. For example, in the process of purifying drinking water, a coagulant like calcium carbonate (CaCO3) can be added to the water to precipitate out any dissolved minerals that may have formed. This process is known as混凝和沉淀，which are common methods used
