厌氧氨氧化工艺处理含海水污水的亚硝态氮抑制及反应动力学  

Treating sewage with seawater by ANAMMOX process:effects of nitrite and kinetics

作　　者：于德爽[1] 齐泮晴 李津[1] 魏思佳[1] 管勇杰 

机构地区：[1]青岛大学环境科学与工程学院,山东青岛266071

出　　处：《中国环境科学》2016年第5期1400-1408,共9页China Environmental Science

基　　金：国家自然科学基金(51278258;51478229);山东省自然科学基金(BS2015HZ007);山东省高等学校科技计划项目(J15LC61);青岛市应用基础研究项目(13-1-4-203-jch)

摘　　要：采用ASBR厌氧氨氧化反应器,在全海水条件下,通过固定进水NH_4^+-N 110mg/L,逐渐提高进水NO_2^--N的方式研究了NO_2^--N对厌氧氨氧化脱氮的影响及抑制动力学和脱氮过程动力学.结果表明:进水NO_2^--N浓度达到170mg/L时,厌氧氨氧化反应开始受到明显抑制,NH_4^+-N的去除率下降8.41%;修正的Logistic过程动力学研究结果显示,进水NO_2^--N低于151.49mg/L会促进厌氧氨氧化反应的进行,进水NO_2^--N高于170mg/L时开始抑制厌氧氨氧化反应的进行;Luong模型适合描述全海水条件下高浓度NO_2^--N对厌氧氨氧化脱氮效能的抑制动力学.Luong模型得到的最大基质转化速率(NRR_(max))为0.53kg N/(m^3·d),出水NO_2^--N半饱和常数(KS)为0.10mg/L,净生长停止的出水NO_2^--N浓度(Sm)为338.22mg/L,Luong动力学常数(n)为0.41,相关系数为0.97801.An anaerobic sequencing batch reactor（ASBR） was operated to investigate the effects of nitrite on nitrogen removal via ANAMMOX by keeping influent ammonia nitrogen concentration as 110mg/L and increasing influent nitrite concentration at whole seawater condition.The kinetics features were also studied at the same time.ANAMMOX process began to be inhibited when the influent nitrite concentration was 170mg/L,and the ammonia nitrogen removal efficiency decreased 8.41%.The fitting of modified Logistic process kinetics model showed that influent nitrite less than 151.49mg/L would increase the nitrogen removal rate,while influent nitrite higher than 170mg/L would inhibited the nitrogen removal rate.The model of Luong suited to fit the inhibition kinetics with higher nitrite concentration which affected nitrogen removal efficiency.The maximum substrate removal rate（NRR_（max）） obtained by Luong model was 0.53 kg N/（m^3·d）,and the half-saturation constant（K_S） was 0.10mg/L.The maximum allowable effluent nitrite concentration above which cells do not grow（S_m） was predicted to be 338.22mg/L and the correlation（n） was 0.97801.

关 键 词：海水 厌氧氨氧化 亚硝态氮 抑制动力学 过程动力学 

分 类 号：X703.5[环境科学与工程—环境工程]