低碳氮比影响A/O生化磷代谢的机理分析  

MECHANISM ANALYSIS OF LOW C/N RATIO AFFECTING BIOCHEMICAL PHOSPHORUS METABOLISM OF A/O

作　　者：付欢[1] 李杰 Fu Huan;Li Jie(PetroChina Jinxi Petrochemical Company,Huludao,Liaoning,125001;Shenyang Quality Supervision Station,Shenyang,Liaoning,110000)

机构地区：[1]中国石油天然气股份有限公司锦西石化分公司,辽宁葫芦岛125001 [2]沈阳质量监督站,辽宁沈阳110000

出　　处：《石油化工安全环保技术》2023年第1期61-64,I0004,共5页Petrochemical Safety and Environmental Protection Technology

摘　　要：记录了A/O生化中试反应器中,将进水碳氮比(C/N)从22下降至13的过程中,反应器中缺氧段污泥出现释磷,正磷含量从1.1 mg/L逐渐上升至8.3 mg/L,好氧段先吸磷后释放磷,正磷含量从1.0上升到4.4 mg/L的现象。用生化脱氮除磷原理解释试验现象背后的作用机理。说明了A/O生化工艺运行过程中控制入水C/N的重要性,总结了低C/N条件下,A/O生化排泥、回流等参数的调整措施,以期为工业污水处理生化工艺管理提供参考。In the process of reducing the influent C/N from 22 to 13 in the A/O biochemical pilot reactor,the sludge in the anoxic section of the reactor releases phosphorus;the positive phosphorus content gradually increases from 1.1mg/L to 8.3mg/L;the aerobic section absorbs phosphorus first and then releases phosphorus,and the positive phosphorus content increases from 1.0 to 4.4mg/L.This paper recorded this phenomenon.It explained the mechanism of action behind the test phenomenon by using the principles of biochemical nitrogen and phosphorus removal.The paper illustrated the importance of controlling water C/N during the operation of A/O biochemical process.Then it summarized the adjustment measures for A/O biochemical sludge discharge,reflux and other parameters under the condition of low C/N in order to provide reference for the biochemical process management of industrial wastewater treatment.

关 键 词：碳氮比 除磷 脱氮 泥龄 回流 

分 类 号：X703[环境科学与工程—环境工程]