求翻译：由于磁粉具有很大的表面积，能够直接吸附水中的污染物，并且很容易和污泥中的菌胶团结合，形成紧密的磁粉团粒结构，使污泥保持比较稳定的絮凝性能。是什么意思？

Because of the magnetic particle with a very large surface area, direct adsorption of pollutants in the water, and are very easily and zooglea combination of sludge, forming close magnetic particle aggregates, flocculation performance of sludge remain relatively stable.