One of the most common causes of failure is sometimes referred to as the âcreeping crudâ or âold-ageâ or Biomat failure. Several factors contribute to the development of the biomat; time, wastewater strength, hydraulic load, groundwater saturation, and maintenance are the major ones.
Please exercise caution, and wear a mask over your nose and mouth to reduce the impact on your health. Removing Mold and Mildew growth from the Outside of a Dry Book: 1  If you can perceive growth on your book's cover, you may use a fine brush or very soft cloth to gently brush away the mildew.lease exercise caution, and wear a mask over your nose and mouth to reduce the impact on your health. Removing Mold and Mildew growth from the Outside of a Dry Book: 1  If you can perceive growth on your book's cover, you may use a fine brush or very soft cloth to gently brush away the mildew.
How to Remove Mold and Mildew from Books. I live in the San Francisco Bay area on top of a hill in a very foggy area. Needless to say, mildew is the enemy of someone like me who collects books. And, that's not even mentioning the 11,000 or so books stored in Bodega Bay...ou probably have mildew growth on your book if you observe any of the following problems: If you identify mold or mildew on any of your books, magazines, or paper ephemera, remove them from your collection immediately! Go here for the remedies.