摘要
为优化某味精废水处理工程的操作，研究了其除碳脱氮动力学特性。结果表明，对COD的最大化去除速率为0．110kgCOD／（kgVSS·h），最大容积去除速率与实际容积负荷之比为17．28～21．12．最大比去除速率与实际污泥负荷之比为13～21，饱和常数怨为202mgCOD／L；对氨氮的最大比去除速率为0．0141kgNH4^＋-N／（kgVSS·h），最大容积去除速率与实际容积负荷之比为8．86～11．25，最大比去除速率与实际污泥负荷之比为7—11，K为19．1mgNHf—N／L，表明该工程去除COD和氨氮的潜力还很大，容易实现达标排放。当以葡萄糖为碳源时，对硝态氮的最大比去除速率为0．0140kgNO3^_-N／（kgVSS·h），Ks为13．5mgNO3^-N／L；当以醋酸盐为碳源时最大比去除速率为0．0244kgNO3^-N／（kgVSS·h），Ks为12．0mgNO3^--N／L，表明醋酸盐比葡萄糖更有利于提高反硝化速率和强化脱氮效果。
The kinetic characteristics of biological nitrogen and carbon removal from monosodium glutamate wastewater were investigated to optimize a treatment project. For COD, the maximum specific removal rate （Vmax） is 0. 110 kgCOD/（kgVSS·h）, the ratio of maximum volumetric removal rate to the actual loading rate is 17.28 to 21.12, the ratio of Vmax to the actual sludge loading rate is 13 to 21, and the value for saturation constant （Ks） is 202 mgCOD/L. For NH4＋ - N, the Vmax is 0. 014 1 kgNH4^＋ - N/ （ kgVSS· h） , the ratio of maximum volumetric removal rate to the actual loading rate is 8.86 to 11.25, the ratio of vmax to the actual sludge loading rate is 7 to11, and the Ks is 19.1 mgNH4^＋ -N/L. These show that this project has enormous potential for removal of COD and ammonia nitrogen. When glucose is used as carbon source, the Vmax and Ks for nitrate nitrogen are 0. 014 0 kgNO3- - N/（ kgVSS·h） and 13.5 mgNO3^--N/L respectively. When acetate is used as carbon source, the Vmax and Ks are 0. 024 4 kgNO3 -N/（kgVSS · h） and 12.0 mgNO3^- -N/L respectively. These show that acetate is better than glucose in increasing denitrification rate and enhancing nitrogen removal efficiency.
出处
《中国给水排水》
CAS
CSCD
北大核心
2009年第15期60-62,66,共4页
China Water & Wastewater
基金
国家高技术研究发展计划(863)项目(2006AA06Z322)
浙江省重大科技攻关项目(2003C13005)
关键词
味精废水
生物除碳
生物脱氮
动力学
monosodium glutamate wastewater
biological carbon removal
biological nitrogen
