If you are looking for a book about mathematical modeling of biofilms, you don’t have many options anyway. “Mathematical Modeling Of Biofilms” is a well-written book including many chapters on different types of modeling. The book is written, to my taste, as an introduction book for researchers new in this field and does not go into the details of actual modeling algorithms.
You can find the soft copy of this book at the publications section of the biofilm group at TuDelft, or by clicking here.