摘要
采用厌氧－缺氧－好氧工艺（简称Ａ２／Ｏ工艺），研究除磷脱氮的主要影响因素及其规律。结果表明，ＣＯＤ／ＴＰ值增大，总磷去除率提高，但当ＣＯＤ／ＴＰ＞６０时，提高缓慢；硝酸盐的存在对除磷有抑制；ＣＯＤ／ＴＫＮ＜１０时，总氮去除率随碳氮比增大而增加，大于此值几乎无影响；混合液回流比小于３时，回流比的变化对总磷总氮的去除均有影响；温度对脱氮的影响比除磷显著，小于１５℃氮去除率明显下降，而８～１０℃时仍有较好的除磷效果。
The anaerobic-anoxic-oxic(A2/O) process was utilized to study the primary factors and principles affecting phosphorus and nitrogen removal.It shows that the efficiency to remove total phosphorus increases with the increase of the value of COD/TP,however,this increase becomes limited when COD/TP>60.The removal of phosphorus is inhibited by the existance of nitrate salts.When COD/TKN<10,the removal percentage of total nitrogen increases with the increase of the ratio of C/N,but nearly uneffected when COD/TKN>10.The removal of total phosphrous and total nitrogen is also affected by the recycle ratio of mixture if its value is lower than 3.The effect of temperature on nitrogen removal is obviously greater than on phosphorus removal. Below 15℃,the efficiency to remove nitrogen will remarkably decrease,while phosphorus removal remains effective between 8～10℃.
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
1996年第1期68-72,共5页
China Environmental Science
关键词
生物除磷
生物脱氮
废水处理
biological phosphorus removal,biological nitrogen removal,wastewater treatment.
