曝气充氧对排水管网液相硫化物累积影响研究

污水管道内硫化物的产生和逸散常引起恶臭、中毒和管道腐蚀等一系列管网问题,曝气充氧可以作为一种较为适用的控制污水管道内硫化氢产生和累积的方法.针对曝气充氧控制管网液相硫化物的方法,通过实验室批量实验,研究不同曝气条件对管道液相硫化物累积、碳源消耗等反应过程的影响.结果表明,曝气充氧主要通过氧化硫化物实现对液相硫化物浓度的有效控制,硫化物累积、碳源消耗受间歇曝气频率影响显著,相对间隔较短的充氧曝气方式,可以有效防止液相硫化物累积,并且消耗较少的有机碳源.

Study on the influence of oxygen aeration as a means of controlling sulfide accumulation of sewer system

The production and emission of hydrogen sulfide in sewer systems is associated with several problems, including malodor, toxicity on sewer workers and biogenic corrosion of concrete pipe. Oxygen aeration is a more adopted method of controlling hydrogen sulfide production and accumulation. The paper aims to study on the influence of different oxygen aeration condition on sulfide accumulation, carbon source consumption process of sewer system by lab-scale batch experiments. Result indicated that the liquid sulfide concentration can be controlled by oxygen aeration which oxidizes the sulfide generated of sewer system. The sulfide accumulation, carbon source consumption is significantly affected by aeration frequency. The way of more short intermittent oxygen aeration can effectively suppress sulfate reduction, prevent the accumulation of liquid phase sulfide and consume less organic carbon source in the sewer system.