部分固体废弃物作外加碳源的研究进展

RESEARCH ADVANCES ON WASTE SOLID AS EXTERNAL CARBON SOURCE

目前污水处理面临脱氮除磷效率低下的问题,其原因是污水中有机物含量高但可生物降解有机物含量不足,而可生物降解有机物是脱氮除磷微生物的重要碳源。部分固体废弃物具有有机物含量高、价廉易得、易生物降解等特点,因此将固体废弃物作为外加碳源提高污水的脱氮除磷效果具有良好的前景。通过对污泥、农业废物、水产养殖废物、厨余垃圾等固体废弃物的特点及其水解液作碳源的研究现状进行分析,指出了目前固体废弃物作碳源存在的问题及未来的研究方向,为学者后期研究奠定基础。

Nowadays the inefficiency of nitrogen and phosphorus removal is a common problem in wastewater treatment,and the primary reason is that the wastewater has high amount of organic content but low amount of biodegradable organics. The biodegradable organics is one sort of important carbon source during biological nitrogen and phosphorus removal process. Solid wastes has the characteristics of high amount of organic content,easily biodegradation,reasonable price,using waste solid as external carbon source is promising to improve efficiency of nitrogen and phosphorus removal in wastewater treatment. The research introduced the characteristics of solid wastes including sludge,agricultural wastes,aquaculture waste and kitchen wastes,analyzed the status of using their hydrolysate as carbon source,and proposed the existing problems and further research.