How does biodegradable plastic degrade? Is there any possibility of recycling?

What is the principle of degradation? Can it be recycled? If it cannot be recycled as plastic, how should this type of plastic be treated in garbage disposal?

Degradable plastics are generally made of polylactic acid, etc., which are easily decomposed by microorganisms in the natural environment (degraded into carbon dioxide and water, etc.), and there is no need for recycling.