问:净水工艺中采用硫酸铝或明矾作为混凝剂,对人体健康是否有不良影响?答:铝存在广泛,含量丰富,地壳含铝量约为8％。饮水净化处理过程中广泛使用铝的化合物作为混凝剂,如硫酸铝、明矾、聚合氯化铝等。通常用铝的化合物处理过的自来水中,铝含量一般为0.05mg/L,很少有超过0.2mg/L的。动物实验表明铝属低毒性。 Q: Does the use of aluminum sulfate or alum as a coagulant in the water purification process have adverse effects on human health? A: Aluminum is widely available and abundant in content. The amount of aluminum in the earth’s crust is about 8%. Aluminum compounds are widely used as coagulants in drinking water purification processes such as aluminum sulfate, alum, polyaluminum chloride, and the like. In tap water, which is usually treated with aluminum compounds, the aluminum content is generally 0.05 mg/L and rarely exceeds 0.2 mg/L. Animal experiments show that aluminum is low toxicity.