Wan Chuan Environmental Protection, Dongguan wastewater treatment equipment, tells you that biodegradability refers to the difficulty of pollutants being degraded by microorganisms in wastewater treatment. The biodegradability of wastewater depends on the quality of wastewater, that is, the nature of pollutants contained in wastewater. If the nutrient ratio of sewage is appropriate, pollutants are easily biodegradable and the content of toxic substances is low, the biodegradability of wastewater is strong. Wastewater suitable for microbial growth has strong biodegradability, while wastewater unsuitable for microbial growth has poor biodegradability.