固定化包埋填料高氨氮负荷下短程硝化稳定运行特征
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摘要
为了探讨固定化包埋填料高氨氮负荷下短程硝化的稳定运行研究,以固定化技术包埋一定量硝化菌填料为载体,并利用序批次反应器进行处理人工配置的氨氮废水实验,该实验研究了实现短程硝化影响因素DO、有机物的控制范围,驯化期间,分别将温度、pH值、DO控制在(31±1)℃、7.8~8.2、1.8~2.0 mg·L~(-1)范围内,进水有机物浓度始终保持在50 mg·L~(-1)以下,体积填充率为15%,采用高游离氨(3.03~14.18 mg·L~(-1))对NOB产生抑制作用,使活性填料中的AOB成为优势菌群,通过历时55 d的培养实现了该填料短程硝化的启动及稳定运行,结果表明,进水氨氮浓度保持200 mg·L~(-1)左右,氨氮去除速率高达28.29 mg NH+4-N·(L·h)~(-1)的同时,氨氮的去除率>97%,亚硝酸盐积累NO_2~--N/NO_x~--N>85%,实验同时还考察了活性填料的抗冲击负荷能力与单个周期内短程硝化运行特征。
To study on shortcut nitrification stable operation of immobilized active filler at high ammonia loading,the experiment used a certain amount of embedded active filler as a carrier to treat ammonia wastewater by manual configuration in a sequence batch reactor. The research explored DO and organics range as the influence factors of shortcut nitrification. During acclimation,the reactor ran under the following optimal conditions: temperature of(31 ± 1) ℃,DO of 1. 8—2. 0 mg·L~(-1),pH of 7. 8—8. 2,and filling rate of 15%. The concentration of organics was always lower than 50 mg·L~(-1)about influent. The AOB developed the dominant bacteria of immobilized active filler by high free ammonia(3. 03—14. 18 mg · L~(-1)) inhibitory action to NOB. The results showed that the ammonia removal rate was up to 97%,nitrite accumulation rate NO_2~--N/NO_x~--N > 85% by controlling influent ammonia concentration at 200 mg·L~(-1)during shortcut nitrification of start-up and stable operation of 55 days,whereas the ammonia removal rate was 28. 29 mg NH_4~+-N·(L·h)~(-1). The test also investigated the active fillerload of shock resistance and a single cycle characteristics of shortcut nitrification operation.
To study on shortcut nitrification stable operation of immobilized active filler at high ammonia loading,the experiment used a certain amount of embedded active filler as a carrier to treat ammonia wastewater by manual configuration in a sequence batch reactor. The research explored DO and organics range as the influence factors of shortcut nitrification. During acclimation,the reactor ran under the following optimal conditions: temperature of(31 ± 1) ℃,DO of 1. 8—2. 0 mg·L~(-1),pH of 7. 8—8. 2,and filling rate of 15%. The concentration of organics was always lower than 50 mg·L~(-1)about influent. The AOB developed the dominant bacteria of immobilized active filler by high free ammonia(3. 03—14. 18 mg · L~(-1)) inhibitory action to NOB. The results showed that the ammonia removal rate was up to 97%,nitrite accumulation rate NO_2~--N/NO_x~--N > 85% by controlling influent ammonia concentration at 200 mg·L~(-1)during shortcut nitrification of start-up and stable operation of 55 days,whereas the ammonia removal rate was 28. 29 mg NH_4~+-N·(L·h)~(-1). The test also investigated the active fillerload of shock resistance and a single cycle characteristics of shortcut nitrification operation.
引文
[1]吴伟伟,王舜和,王建龙,等.短程硝化反应器的快速启动与运行特性[J].清华大学学报(自然科学版),2006,46(12):2077-2080
[2]RUIZ G,JEISON D,CHAMY R.Nitrification with high nitrite accumulation for the treatment of wastewater with high ammonia concentration[J].Water Research,2003,37(6):1371-1377
[3]HAN D W,CHANG J S,KIM M J.Nitrifying microbial community analysis of nitrite accumulating biofilm reactor by fluorescence in situ hybridization[J].Water Science and Technology,2003,47(1):97-104
[4]徐英,李文英.固定化硝化菌去除焦化废水中氨氮的研究[J].中国生物工程杂志,2005(S1):122-124
[5]张长利,王景晶,杨宏.细胞固定化技术研究进展及其在水处理领域的应用[J].水处理技术,2013,39(6):1-4
[6]HELLINGA C,SCHELLEN A A J C,MULDER J W,et al.The Sharon process:An innovative method for nitrogen removal from ammonium-rich waste water[J].Water Science and Technology,1998,37(9):135-142
[7]CAPDEVILLE B,CORNIER J C,DEGUIN A A,et al.Study of factors controlling nitrite build-up in biological processes for water nitrification[J].Water Science and Technology,1992,26(5-6):1017-1025
[8]YOO H,AHN K H,LEE H J,et al.Nitrogen removal from synthetic wastewater by simultaneous nitrification and denitrification(SND)via nitrite in an intermittently-aerated reactor[J].Water Research,1999,33(1):145-154
[9]YANG Qing,PENG Yongzhen,LIU Xiuhong,et al.Nitrogen removal via nitrite from municipal wastewater at low temperatures using real-time control to optimize nitrifying communities[J].Environmental Science&Technology,2007,41(23):8159-8164
[10]WIESMANN U.Biological nitrogen removal from wastewater[J].Advances in Biochemical Engineering/Biotechnology,1994,51:113-154
[11]王应军,金航标.包埋活性污泥和反硝化污泥短程硝化反硝化脱氮[J].应用基础与工程科学学报,2012,20(2):179-188
[12]闫志明,普红平,阳立平.生物固定化技术研究及应用评述[J].四川化工,2004,7(1):12-15
[13]高大文,彭永臻,王淑莹.控制p H实现短程硝化反硝化生物脱氮技术[J].哈尔滨工业大学学报,2005,37(12):1664-1666
[14]ANTHONISEN A C,LOEHR R C,PRAKASAM T B S,et al.Inhibition of nitrification by ammonia and nitrous acid[J].Journal(Water Pollution Control Federation),1976,48(5):835-852
[15]李凌云,彭永臻,杨庆,等.SBR工艺短程硝化快速启动条件的优化[J].中国环境科学,2009,29(3):312-317
[2]RUIZ G,JEISON D,CHAMY R.Nitrification with high nitrite accumulation for the treatment of wastewater with high ammonia concentration[J].Water Research,2003,37(6):1371-1377
[3]HAN D W,CHANG J S,KIM M J.Nitrifying microbial community analysis of nitrite accumulating biofilm reactor by fluorescence in situ hybridization[J].Water Science and Technology,2003,47(1):97-104
[4]徐英,李文英.固定化硝化菌去除焦化废水中氨氮的研究[J].中国生物工程杂志,2005(S1):122-124
[5]张长利,王景晶,杨宏.细胞固定化技术研究进展及其在水处理领域的应用[J].水处理技术,2013,39(6):1-4
[6]HELLINGA C,SCHELLEN A A J C,MULDER J W,et al.The Sharon process:An innovative method for nitrogen removal from ammonium-rich waste water[J].Water Science and Technology,1998,37(9):135-142
[7]CAPDEVILLE B,CORNIER J C,DEGUIN A A,et al.Study of factors controlling nitrite build-up in biological processes for water nitrification[J].Water Science and Technology,1992,26(5-6):1017-1025
[8]YOO H,AHN K H,LEE H J,et al.Nitrogen removal from synthetic wastewater by simultaneous nitrification and denitrification(SND)via nitrite in an intermittently-aerated reactor[J].Water Research,1999,33(1):145-154
[9]YANG Qing,PENG Yongzhen,LIU Xiuhong,et al.Nitrogen removal via nitrite from municipal wastewater at low temperatures using real-time control to optimize nitrifying communities[J].Environmental Science&Technology,2007,41(23):8159-8164
[10]WIESMANN U.Biological nitrogen removal from wastewater[J].Advances in Biochemical Engineering/Biotechnology,1994,51:113-154
[11]王应军,金航标.包埋活性污泥和反硝化污泥短程硝化反硝化脱氮[J].应用基础与工程科学学报,2012,20(2):179-188
[12]闫志明,普红平,阳立平.生物固定化技术研究及应用评述[J].四川化工,2004,7(1):12-15
[13]高大文,彭永臻,王淑莹.控制p H实现短程硝化反硝化生物脱氮技术[J].哈尔滨工业大学学报,2005,37(12):1664-1666
[14]ANTHONISEN A C,LOEHR R C,PRAKASAM T B S,et al.Inhibition of nitrification by ammonia and nitrous acid[J].Journal(Water Pollution Control Federation),1976,48(5):835-852
[15]李凌云,彭永臻,杨庆,等.SBR工艺短程硝化快速启动条件的优化[J].中国环境科学,2009,29(3):312-317