4. Solid Waste Disposal and Synergetic Pollution Control

Bioreactor landfill marks the final disposal of solid waste. Traditionally, mixed waste is buried directly, resulting in low stabilization efficiency. However, the microenvironment of bioreactor landfill is unfavorable for nitrification and blocks nitrogen transformation, leading to nitrogen accumulation and severe leachate pollution. By means of process optimization, in particular, using biofortification, the biofermentation of organic components and landfill of inorganic components are combined to reduce landfills and environmental risks caused by landfill of organic components. To this end, this chapter reveals the rapid reduction mechanism of organic matter, nitrogen conversion process, constraints, and the impact mechanism. Based on this, technical principles and methods for landfill structural optimization and in situ nitrogen reduction are put forward, to effectively decompose organic matter, prevent the nitrogen accumulation, and accelerate landfill stabilization. The practice is crucial to synergies between the disposal of solid waste and control of secondary pollution.