进水氨氮浓度对SBR法处理猪场废水的影响  

Effect of Influent Concentrations of Ammoniacal Nitrogen on SBR Treatment for Swine Wastewater

作　　者：孟祥至[1] 孟昭福[2] 赵君楠[1] 朱军[3] 闫晓艺[1] 刘娟[1] 

机构地区：[1]西北农林科技大学理学院,陕西杨凌712100 [2]西北农林科技大学资源与环境学院,陕西杨凌712100 [3]明尼苏达大学生物制品及生物系统工程系,美国明尼苏达州55108

出　　处：《农业环境科学学报》2013年第8期1656-1663,共8页Journal of Agro-Environment Science

基　　金：杨凌现代农业研究院培育项目资助

摘　　要：为获得SBR应对不同氨氮浓度猪场废水的适应时间及处理能力的变化情况,以低浓度废水启动SBR达稳定状态,通过逐步改变进水氨氮浓度研究SBR出水指标的变化规律。结果显示:启动至稳定状态的SBR出水氨氮、COD和磷的浓度分别为(6.37±1.70)mg·L-1、(409.90±77.00)mg·L-1、(7.29±0.13)mg·L-1,相应的去除率平均值分别为99.25%、84.18%和74.09%;进水氨氮浓度增大,SBR在前10d整体处在冲击期,其间SBR的出水氨氮、COD和磷波动幅度较大,达稳定期后出水指标趋于稳定,且此时SBR能高效脱氮,但其降解COD和磷的能力降低。经长期高氨氮进水驯化SBR对COD的降解能力可恢复,氨氮浓度较高的进水中需要保证COD浓度以维持系统的除磷能力。After started with low concentration swine wastewater, using a sequencing batch reactor（SBR）at steady state to dispose swine wastewater, the studies on the characteristics of effluent water of SBR at different influent concentration of ammoniacal nitrogen were conducted, its purpose is to reveal the adaptive time and removal efficiency of SBR corresponding to different influent concentration of ammoniacal nitrogen. The results showed that ammoniacal nitrogen, COD and phosphorus in effluent water of SBR at steady state reached （6.37± 1.70）mg·L^-1（,409.90±77.00）mg·L^-1and（7.29±0.13）mg·L^-1, corresponding their average removal rate were 99.25%, 84.18% and 74.09%, respectively. With an increase of influent concentration of ammoniacal nitrogen, the SBR was in shock state in first ten days and reached steady state subsequently. Ammoniacal nitrogen, COD and phosphorus in SBR changed in a wave style in shock period, while they tended to stable in steady period. The ability of denitrogenation of SBR was promoted, while the removal efficiency of COD and phosphorus were decreased at the same time in steady period. The degradable ability of COD could be recovered by a long-term domestication with high influent concentration of ammoniacal nitrogen, and the sufficient COD concentration in feeding wastewater played an important role in dephosphorization ability of SBR at high influent concentration of ammoniacal nitrogen.

关 键 词：SBR 猪场废水 氨氮浓度 脱氮 除磷 COD去除 

分 类 号：X703.1[环境科学与工程—环境工程]