[1]王 磊1,2,叶静陶1,等.自养短程硝化系统启动及污泥絮体微生态物质迁移转化规律试验研究[J].西安建筑科技大学学报:自然科学版,2011,43(04):522-528.[doi:DOI:10.15986/j.1006-7930.2011.04.005]
 ,,et al.Start-up of shortcut nitrification and characteristics of nitrogenconversion in sludge flocs using microelectrodes[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2011,43(04):522-528.[doi:DOI:10.15986/j.1006-7930.2011.04.005]
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自养短程硝化系统启动及污泥絮体微生态物质迁移转化规律试验研究()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
43
期数:
2011年04期
页码:
522-528
栏目:
出版日期:
2011-08-31

文章信息/Info

Title:
Start-up of shortcut nitrification and characteristics of nitrogen
conversion in sludge flocs using microelectrodes
文章编号:
1006-7930(2011)04-0522-07
作者:
王 磊1叶静陶1吕永涛1王旭东1
(1.西安建筑科技大学环境与市政工程学院,陕西西安710055;
2.西部建筑科技国家重点实验室(筹),陕西西安710055
Author(s):
WANG Lei1YE Jing-tao1LV Yong-tao1WANG Xun-dong1
(1.School of Envir.and Muni.Eng.,Xi′an Univ.of Arch.& Tech.,Xi′an 710055,China;
2.State Key Laboratory of Architecture Science and Technology in West China(XAUAT),Xi′an 710055,China)
关键词:
单级自养短程硝化启动微生态迁移转化微电极
Keywords:
 shortcut nitrificationstart-upmicroecologytransformation and conversion
分类号:
X703
DOI:
DOI:10.15986/j.1006-7930.2011.04.005
文献标志码:
A
摘要:
:通过改变反应器曝气量、氨氮浓度与适时排泥可缩短自养短程硝化时间.利用微电极监测技术,测定
反应器内好氧活性污泥絮体微观环境物质浓度变化规律.结果表明,逐步降低曝气量、增加氨氮浓度和适时排
泥可以提高系统的NO-2 -N 积累浓度:在NH+4 -N浓度由200mgN/L提高到400mgN/L,曝气量由35L/H
降到25L/H,污泥浓度稳定在2 100~2 400mg/L,历时23dNO-2 -N积累率由3.4%提高到91.86%.经过三
个阶段,实现了全程硝化到短程硝化的转换过程;通过对污泥基团物质迁移转化的微生态监测发现,NO-2 -N
生成过程主要在污泥基团0~500μm内进行.试验条件下絮体内NO-2 -N总产量从1.48μmol(cm2·h)-1增
加到3.8μmol(cm2·h)-1,NO-3 -N总产量从2.6μmol(cm2·h)-1降低到0.95μmol(cm2·h)-1;随着曝气
量降低和氨氮浓度的提升,NO-2 -N生成区域向污泥絮体表面迁移,亚硝氮氧化区域主要存在于氨氮氧化区
域絮体更深处部位.测试发现物质在污泥界面迁移过程中明显衰减,表明污泥结构过于密实会影响物质迁移
和净化效率.
Abstract:
The shortcut nitrification has been developed through a gradual change of oxygen and ammonia nitrogen concentration
 in a SBR.In system process stages shift,the microelectrodes were used to explore the micro-environmental matter
transport and conversion inside activated sludge flocs.Nitrite was accumulated by decreasing aeration rate from 35L/H to
25L/H and increasing ammonium concentration from 200mgN/L to 400mgN/L(equivalent to DO deceased from 1.0
mg/L to 0.5mg/L),the sludge concentration ranging in 21~24mg/L.Atter 23dand nitrite accumulation rate increasing
to 91.86% .After three stages,the system was shifted from complete nitrification to shortcut nitrification.The variation
of nitrogen insides flocs by changing environment conditions indicated nitrite was produced inner 0~500μm of flocs.The
fluxes of nitrite was improved from 1.48μmol(cm2.h)-1 to 3.8μmol(cm2.h)-1,and the fluxes of the nitrate was decreased
 from 2.6μmol(cm2.h)-1 to 0.95μmol(cm2.h)-1.With decreasing of DO concentration and increasing of ammonia
 nitrogen concentration,nitrite torming zone transfored to the surface of sludge flocs,nitrite oxidizing zone mainly existed
 in deeper flocs.The substance in sludge interface significantly decreased,showing that too densed sludge structure
will affect transformation and purification efficiency of nitrogen compounds.

参考文献/References:

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备注/Memo

备注/Memo:
*收稿日期:2010-12-23  修改稿日期:2011-06-08
基金项目:国家水体污染与治理科技重大水专项基金资助项目(2009ZX07212-002);陕西省“13115”科技创新工程重大科技专项基
金资助项目(2010ZDKG-56);教育部高等学校博士学科点专项科研基金资助项目(20096120110010)
作者简介:王 磊(1971-),男,陕西铜川人,教授,博士生导师,主要从事水污染控制原理与技术.
更新日期/Last Update: 2015-11-05