湖库型水源天然有机物来源与特性及其对水处理工艺影响研究进展

Review on the origin,characteristics and treatability of natural organic matter in lakes and reservoirs

水源水中天然有机物(NOM)的含量和性质既关系到饮用水的色、嗅、味等感官性状及其生物和化学安全性,又对水处理工艺的运行有重要影响.湖泊和水库是目前许多城市的主要水源,深入认识湖库型水源中NOM的来源、性质及其处理特性对水源的优化调度和水处理工艺的运行具有重要意义.本文从湖泊和水库的水力特征出发,分析了湖库型水源中NOM主要来源及其迁移转化过程,结合相关文献总结了外源输入、内源产生以及光化学降解、生物降解等对NOM特性和水处理工艺的影响,并对今后的研究方向进行了展望.

Quantity and quality of natural organic matter(NOM)in the source water determines not only the aesthetic properties of drinking water,such as the color,taste and order,but also the bio-stability and chemical security of drinking water.Moreover,it plays an important role in the operation of water treatment process.Lakes and reservoirs are main water sources of many cities,and therefore a deep understanding of the origin,properties and treatability of NOM in lakes and reservoirs are of great significance in the selection of water source and optimal operation of water works.This paper analyzed the main sources and migration-transformation process of NOM based on the hydraulic characteristics of lakes and reservoirs.Combined with relevant literature,the effects of exogenous input,endogenous generation,photochemical degradation and biodegradation on NOM characteristics and water treatment process were summarized,and the future research directions were also prospected.