[1]董春娟,翟 伟,冯美荣,等.硅藻土-颗粒污泥协同处理焦化废水研究[J].南京理工大学学报(自然科学版),2013,37(05):766.
 Dong Chunjuan,Zhai Wei,Feng Meirong,et al.Coordinated treatment of actual coking wastewater with diatomite and granular sludge[J].Journal of Nanjing University of Science and Technology,2013,37(05):766.
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硅藻土-颗粒污泥协同处理焦化废水研究
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
37卷
期数:
2013年05期
页码:
766
栏目:
出版日期:
2013-10-31

文章信息/Info

Title:
Coordinated treatment of actual coking wastewater with diatomite and granular sludge
作者:
董春娟1翟 伟2冯美荣3李 峰2樊红辉2
1.太原大学 环境工程系,山西 太原 030009; 2.太原理工大学 环境科学与工程学院,山西 太原 030024; 3.太原市科技局 科技交流中心,山西 太原 030009
Author(s):
Dong Chunjuan1Zhai Wei2Feng Meirong3Li Feng2Fan Honghui2
1.Department of Environment Engineering,Taiyuan University,Taiyuan 030009,China; 2.College of Environment Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China; 3.Science and Technology Communication Center,Taiyuan Science and Tec
关键词:
膨胀颗粒污泥床反应器 硅藻土 焦化废水 硫氰根离子 酚类 氨氮
Keywords:
expanded granular sludge bed reactors diatomite coking wastewater thiocyanate ion phenol ammonia nitrogen
分类号:
X703
文献标志码:
A
摘要:
为了研究硅藻土与颗粒污泥协同处理焦化废水的运行特性,采用两个18L的微氧膨胀颗粒污泥床(EGSB)反应器(R1和R2)连续稳定运行7个多月,处理某焦化废水。运行分为两级不添加硅藻土、单级添加硅藻土、两级添加硅藻土3个阶段。研究结果表明:添加硅藻土有助于微氧EGSB反应器内化学需氧量(COD)、酚类、硫氰根离子(SCN-)和氰化物的去除,去除率分别从62.8%,62.6%,6.8%和78.0%提高到了77.7%,96.7%,86.4%和80.6%; 氨氮NH3-N去除率由27.4%下降至负值(最低至-35.0%)。两级添加硅藻土微氧EGSB反应器系统能够同时高效去除COD、酚类、SCN-、氰化物和NH3-N。在R1+R2的水力停留时间(HRT)为12 h+12 h时,COD、挥发酚、SCN-、氰化物和NH3-N的总去除率分别为87.0%,99.9%,92.0%,90.6%和86.0%,出水浓度分别为239.4,0.3,12.5,0.06,和4.9 mg/L; 添加硅藻土微氧EGSB反应器内形成的生物硅藻土,与颗粒污泥共同保证了反应器内的高污泥浓度、丰富菌种和足够的硝化菌量。SCN-和酚类均会抑制硝化菌,同时保证反应器内的低SCN-浓度和低挥发酚浓度才能获得高NH3-N去除率。
Abstract:
To study the operation characteristic of the coordinated treatment of the actual coking wastewater with diatomite and granular sludge,two 18 L micro-aerobic expanded granular sludge beds(EGSB)reactors fed(R1+R2)with the coking wastewater are operated continuously for a period of over 7 months.The operation process contains three stages:the two-stage micro-aerobic EGSB without diatomite,the single-stage micro-aerobic EGSB with diatomite,and the two-stage micro-aerobic EGSB with diatomite.The results show that the diatomite can enhance the removal rates of chemical oxygen demand(COD),phenol,thiocyanate ion(SCN-)and cyanide in the micro-aerobic EGSB reactor treating actual coking wastewater,and the removal rates of COD,phenol,SCN- and cyanide increase respectively from 62.8%,62.6%,6.8% and 78.0% to 77.7%,96.7%,86.4% and 80.6%.The removal rate of ammonia nitrogen(NH3-N)decreases from 27.4% to negative value(the lowest is -35.0%).The two-stage micro-aerobic EGSB reactor system with diatomite can simultaneously achieve the high removal rates of COD,phenol,SCN-,cyanide and NH3-N.With 12 h+12 h hydraulic residence time(HRT)of R1+R2,the total removal rates of COD,phenol,SCN-,cyanide and NH3-N are 87.0%,99.9%,92.0%,90.6% and 86.0% respectively,and the effluent concentrations are 239.4,0.3,12.5,0.06, and 4.9 mg/L.In the micro-aerobic EGSB reactor with diatomite,the bio-diatomite and granular sludge formed synchronously can ensure the high biomass concentration,the enrichment micro-community and the enough nitrifying bacteria.SCN- and phenol can inhibit the activity of nitrifying bacteria,and the SCN- inhibition is due to the toxicity of SCN- itself,but not the increased loading of ammonia formed from SCN- degradation.The lower SCN- and phenol concentration are needed simultaneously for getting the higher NH3-N removal rate.

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备注/Memo

备注/Memo:
收稿日期:2012-03-17 修回日期:2012-09-19
基金项目:山西省自然科学基金(2011011008-3); 山西省科技攻关项目(20120313008-2); 太原市科技明星专项(11014929)
作者简介:董春娟(1970-),女,博士,教授,主要研究方向:E-mail:chunjuand@126.com。
更新日期/Last Update: 2013-10-31