随着城市工业化进程的加快 ,水污染日益严重。因此 ,保护水质已被提到环保的重要议事日程。目前 ,净化污水的最有效途径是应用膨润土作吸附剂 ,价格低廉 ,被认为是一种可取代活性炭的除臭材料 ,用途极其广泛。世界上生产膨润土的国家有 50多个、公司 1 0 0多家 ,美国是世界上最 With the acceleration of urban industrialization, water pollution has become increasingly serious. Therefore, the protection of water quality has been mentioned on the important agenda of environmental protection. At present, the most effective way to purify sewage is to use bentonite as an adsorbent, and the price is low. It is considered as a deodorizing material that can replace activated carbon, and its use is extremely wide. There are more than 50 countries producing bentonite and more than 100 companies in the world. The United States is the largest in the world.