Effect of Fe0 on acrylic fiber wastewater treatment in SBBR

doi:10.3969/j.issn.0438-1157.2013.08.042

Abstract

Abstract: In this paper,taking acrylic wastewater from the sewage treatment workshop of a chemical fiber company in Jilin as an object,the effect of Fe⁰ on acrylic wastewater treatment in SBBR reactor was studied via parallel comparison test.The test results showed that:(1)It could improve the start-up rate of SBBR reactor by adding Fe⁰.(2)While the reactor was at the stable operation stage,in 2^# reactor with added Fe⁰ and 1^# reactor without adding Fe⁰,the average removal rates of COD_Cr were 70.7% and 60.5% and the average removal rate of NH₃-N were 60.6% and 13.5%,respectively.The average removal rate of COD_Cr and NH₃-N were improved by 10.2% and 47.1% by adding Fe⁰.(3)The mixed liquor suspended solids(MLSS)and mixed liquor volatile suspended solids(MLVSS)in 2^# reactor with added Fe⁰ were 1.60 and 1.35 times than those in 1^# reactor,respectively.Adding Fe⁰ was beneficial to the growth of heterotrophic nitrification bacteria-Alcaligenes sp.,thus significantly improving NH₃-N removal rate.

Key words: acrylic fiber wastewater, sequencing batch biofilm reactor, zero-valent iron, identification of typical colonies

摘要： 以吉林某化纤集团公司污水处理车间腈纶废水为对象,通过平行对比试验考察了Fe⁰对SBBR反应器处理腈纶废水性能的影响。结果表明:(1)添加Fe⁰可提高SBBR反应器的启动速率;(2)在反应器进入稳定运行阶段后,添加Fe⁰的2^#反应器与对照组1^#反应器的COD_Cr平均去除率分别为70.7%和60.5%,NH₃-N平均去除率分别为60.6%和13.5%,外加Fe⁰的SBBR反应器COD_Cr与NH₃-N平均去除率分别提高了10.2%和47.1%;(3)添加Fe⁰的2^#反应器的MLSS与MLVSS分别是对照组1^#反应器的1.60倍和1.35倍。同时,添加Fe⁰更有利于异养型硝化菌——产碱杆菌属的生长,从而大大提高了反应器NH₃-N的去除率。

关键词: 腈纶废水, SBBR, 零价铁, 菌种鉴定

CLC Number:

X505

WANG Ya'e, LI Jie, ZHAI Siyuan, FENG Juanjuan. Effect of Fe⁰ on acrylic fiber wastewater treatment in SBBR[J]. CIESC Journal, 2013, 64(8): 2996-3002.

王亚娥, 李杰, 翟思媛, 冯娟娟. Fe⁰对SBBR工艺处理腈纶废水性能影响[J]. 化工学报, 2013, 64(8): 2996-3002.

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Effect of Fe⁰ on acrylic fiber wastewater treatment in SBBR

Fe⁰对SBBR工艺处理腈纶废水性能影响

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