摘要
某污水处理厂进水的碳氮比和碳磷比值偏低,碳源明显不足,分别采用传统初沉池和高负荷初沉发酵池对其进行处理。结果表明,传统初沉池由于对COD的过度去除而导致碳源不足问题加剧;而采用高负荷、高泥位、中低速搅拌模式运行的高负荷初沉发酵池则可有效改善污水中的碳源结构,其出水C/N值和C/P值分别增加了58.8%和79.7%,这可大大提高后续生物处理系统的脱氮除磷效率。
High load primary sedimentation/fermentation tank and traditional primary sedimentation tank were used to treat the influent with low C/N ratio and C/P ratio of a WWTP, respectively. The results showed that the traditional primary sedimentation tank aggravated the carbon source shortage due to its excessive COD removal. The primary sedimentation/fermentation tank operating at high load, high sludge height and mid-low-speed stirring could effectively improve the carbon source structure, and the effluent C/N ratio and C/P ratio were increased by 58.8% and 79.7%, respectively, which could significantly increase the nitrogen and phosphorus removal efficiency of the subsequent biological treatment process.
出处
《中国给水排水》
CAS
CSCD
北大核心
2013年第7期59-63,共5页
China Water & Wastewater
基金
国家高技术研究发展计划(863)项目(2009AA063802)
关键词
高负荷初沉发酵池
传统初沉池
碳源不足
脱氮除磷
high load primary sedimentation/fermentation tank
traditional primary sedimenta-tion tank
carbon source shortage
nitrogen and phosphorus removal
