Amends the Environmental Protection Act. Defines the terms "anaerobic digester", "anaerobic digestion", "digestate", and "food waste processing facility". Replaces the definition of "food scrap" with the definition of "food waste". Replaces references to food scrap with references to food waste. Makes changes to provisions concerning pollution control facilities to exclude the portion of a site or facility that is used exclusively for the processing of food waste, with certain other requirements. Provides an exception for the commingling of certain food waste and landscape waste from certain provisions regarding landscape waste. Amends the Solid Waste Planning and Recycling Act. Adds to requirements for county waste management plan recycling programs. Amends the Illinois Solid Waste Management Act. Establishes a food and food waste management hierarchy. Requires a covered establishment to carry out certain duties with respect to food waste. Provides for rulemaking, enforcement, and penalties with respect to provisions concerning food waste. Establishes requirements and procedures for diverting food that is safe for human consumption. Requires certain State agencies and units of local government to purchase and use compost and digestate, with certain requirements. Establishes a food diversion grant program. Defines terms. Effective immediately.