液相化学处理MBBR填料对城市污水厂尾水深度脱氮的影响  

Influence of the Liquid-phase Chemical Method Modified MBBR Carriers on Advanced Nitrogen Removal of Urban Wastewater Treatment Plant Effluent

作　　者：李春梅[1,2,3] 王海燕[2,3] 王有乐[1] 杭前宇 程子芮 刘凯[2,3,4] 

机构地区：[1]兰州大学资源与环境学院,甘肃兰州730000 [2]环境基准与风险评估国家重点研究室,中国环境科学研究院,北京100012 [3]中国环境科学研究院水污染控制技术研究中心,北京100012 [4]河南理工大学材料科学与工程学院,河南焦作454150

出　　处：《环境工程技术学报》2016年第4期336-342,共7页Journal of Environmental Engineering Technology

基　　金：国家水体污染控制与治理科技重大专项(2014ZX07216-001)

摘　　要：为进一步提高移动床生物膜反应器(MBBR)中普通聚乙烯(PE)填料对城市污水处理厂尾水中NO-3-N的去除能力,采用液相化学处理法对PE进行改性,并对其反硝化深度脱氮效能进行研究。结果表明:改性聚乙烯(MPE)填料的静态接触角为75.5°,与PE相比降低了26.6%;扫描电镜显示,MPE与PE相比表面结构粗糙度增强;能谱及红外光谱分析表明,MPE表面氧元素含量及结构都发生了变化;MPE填料的MBBR反硝化能力与PE相比得到了明显提高,当进水NO-3-N和TN浓度分别为(8.5±1.5)和(14.3±2.1)mg/L时,MPE填料的MBBR对NO-3-N和TN的平均去除率分别为(75.2±7.0)%和(56.5±10.7)%,与PE相比分别提高了20.8%和58.1%。To improve the nitrate removal ability of the polythene（ PE） carriers in the moving bed biofilm reactors（ MBBR）,the liquid-phase chemical method was used to modify the PE carriers and the ability of advanced nitrogen removal denitrification of the modified PE（ MPE） carriers also studied extensively. The results showed that the static contact angle of the MPE surface was 75. 5° which decreased by 26. 6% compared with that of PE. The MPE surface structure roughness was higher than that of PE through the scanning electron microscopy（ SEM）observation,and the oxygen element content of MPE was increased and the surface structure was changed compared with PE using the energy dispersive spectra and IR spectra analysis. The denitrification ability of MPE MBBR was improved obviously compared with PE MBBR. When the influent NO-3-N and TN of MPE MBBR were（ 8. 5 ± 1. 5）mg/L and（ 14. 3 ± 2. 1） mg/L,the NO-3-N and TN removal were（ 75. 2 ± 7. 0） % and（ 56. 5 ± 10. 7） %,respectively,which were increased 20. 8% and 58. 1% compared with the PE MBBR accordingly.

关 键 词：液相化学改性方法 填料 移动床生物膜反应器(MBBR) 反硝化 

分 类 号：X703[环境科学与工程—环境工程]