Which of the following is a treatment method for Class B Biosolids?

Lime stabilization is a recognized treatment method for Class B Biosolids, which are biosolids that meet specific criteria for pathogen reduction and vector attraction reduction but are not treated to the same level as Class A biosolids. The process involves adding lime to the biosolids, which raises the pH to a level that is unfavorable for pathogens, effectively reducing their numbers. In addition to pathogen control, lime stabilization helps improve the physical characteristics of the biosolids, making them easier to handle and beneficial for agricultural applications.

This method is particularly advantageous because it not only reduces pathogens but also enables the biosolids to be safely utilized in land applications, benefiting soil health and nutrient cycling. Lime stabilization is one of several methods employed for treating Class B Biosolids, emphasizing its importance in nutrient management practices.

Other treatment methods listed, while effective for different purposes or classifications, do not specifically align with the established criteria for Class B Biosolids treatment alternatives.