留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

初沉池优化运行对改良型A2/O工艺脱氮除磷的影响

李航,  董立春,  方建飞,  丁力,  吕利平

downloadPDF
文章导航 > 环境工程技术学报  > 2021 >  11(6): 1189-1195
李航, 董立春, 方建飞, 丁力, 吕利平. 初沉池优化运行对改良型A2/O工艺脱氮除磷的影响[J]. 环境工程技术学报, 2021, 11(6): 1189-1195. doi: 10.12153/j.issn.1674-991X.20210038
引用本文: 李航, 董立春, 方建飞, 丁力, 吕利平. 初沉池优化运行对改良型A2/O工艺脱氮除磷的影响[J]. 环境工程技术学报, 2021, 11(6): 1189-1195. doi: 10.12153/j.issn.1674-991X.20210038
shu
LI Hang, DONG Lichun, FANG Jianfei, DING Li, LÜ Liping. Effect of optimizing operation of primary sedimentation tank on nitrogen and phosphorus removal of modified A2/O process[J]. Journal of Environmental Engineering Technology, 2021, 11(6): 1189-1195. doi: 10.12153/j.issn.1674-991X.20210038
Citation: LI Hang, DONG Lichun, FANG Jianfei, DING Li, LÜ Liping. Effect of optimizing operation of primary sedimentation tank on nitrogen and phosphorus removal of modified A2/O process[J]. Journal of Environmental Engineering Technology, 2021, 11(6): 1189-1195. doi: 10.12153/j.issn.1674-991X.20210038
shu

初沉池优化运行对改良型A2/O工艺脱氮除磷的影响

doi: 10.12153/j.issn.1674-991X.20210038
  • 1.

    重庆大学化学化工学院

  • 2.

    重庆市三峡水务有限责任公司

  • 3.

    长江师范学院化学化工学院

详细信息
    作者简介:

    李航(1986—),男,工程师,博士,研究方向为水处理理论与技术, lihang0213@163.com

    通讯作者:

    董立春 E-mail: lcdong72@cqu.edu.cn

  • 中图分类号: X703

Effect of optimizing operation of primary sedimentation tank on nitrogen and phosphorus removal of modified A2/O process

  • 1.

    School of Chemistry and Chemical Engineering, Chongqing University

  • 2.

    Chongqing Three Gorges Water Co., Ltd.

  • 3.

    School of Chemistry and Chemical Engineering, Yangtze Normal University

More Information
    Corresponding author: DONG Lichun E-mail: lcdong72@cqu.edu.cn

    摘要
  • 摘要: 采用改良型A2/O工艺处理城市污水,设置6种工况,即原水进入初沉池与超越初沉池直接进入生物池流量分配比分别为10∶0、8∶2、6∶4、4∶6、2∶8、0∶10,在具体工程实例中考察初沉池优化运行对脱氮除磷效果的影响。结果表明:初沉池的优化运行对出水总氮浓度和生物除磷率具有显著影响,而对出水氨氮浓度影响较小。工艺中存在反硝化除磷现象,且反硝化除磷率与原水超越初沉池直接进入生物池流量分配比呈正相关。基于6种工况,较为优化的原水进入初沉池与超越初沉池直接进入生物池流量分配比为6∶4。该工况后期出水总氮平均浓度为8.79 mg/L,较原工况降低了33.9%,氨氮浓度低于0.5 mg/L,好氧区总磷平均浓度为0.34 mg/L,满足GB 18918—2002《城镇污水处理厂污染物排放标准》一级A排放标准;电耗为0.337 kW·h/m3,仅比原工况上涨了5.31%,涨幅较小。相比于原工况,虽然电耗出现了轻微上涨,但出水水质可控性得到了进一步强化,且显著优于一级A排放标准。

     

    Abstract: The modified A2/O process was used to treat urban sewage, and the effect of optimized operation of primary sedimentation tank (PST) on nitrogen and phosphorus removal were investigated in the specific engineering example. Six different operation conditions were adopted in the test, namely, the flow distribution ratio of raw water entering PST to that directly entering the biological tank stepping over PST were 10∶0, 8∶2, 6∶4, 4∶6, 2∶8 and 0∶10, respectively. The results showed that the optimized operation of PST had significant influence on the concentration of total nitrogen in the effluent and the efficiency of biological phosphorus removal, but had little influence on the ammonia nitrogen concentration. The phenomenon of denitrifying phosphorus removal existed in the experimental process, and the denitrifying phosphorus removal rate was positively related to the flow distribution ratio of raw water stepping over PGT directly entering the biological tank. Among the six different conditions, the more optimal flow distribution ratio of raw water entering PST to that directly entering the biological tank stepping over PST was 6:4. In the later stage of this condition, the average concentration of total nitrogen in the effluent was 8.79 mg/L, which was 33.9% lower than the original condition; the concentration of ammonia nitrogen was lower than 0.50 mg/L, and the average concentration of total phosphorus in aerobic area was 0.34 mg/L, which met the first level A standard of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002); the power consumption was 0.337 kW·h/m3, which was only 5.31% higher than the original operation condition, with a small increase. Compared with the original condition, although the power consumption slightly increased, the controllability of the effluent water quality was further strengthened, and it was significantly better than the discharge standard of the first level A.

     

    • HTML全文
    • 参考文献(17)
  • [1] HE Q L, SONG Q, ZHANG S L, et al. Simultaneous nitrification,denitrification and phosphorus removal in an aerobic granular sequencing batch reactor with mixed carbon sources:reactor performance,extracellular polymeric substances and microbial successions[J]. Chemical Engineering Journal, 2018, 331:841-849.
    doi: 10.1016/j.cej.2017.09.060
    [2] 郭晓娅, 年跃刚, 闫海红, 等. 以玉米淀粉废水为反硝化碳源的污染物降解特征与微生物群落结构研究[J]. 环境工程技术学报, 2016, 6(5):427-433.

    GUO X Y, NIAN Y G, YAN H H, et al. Pollutants degradation characteristics and microbial community structure using cornstarch wastewater as denitrification carbon source[J]. Journal of Environmental Engineering Technology, 2016, 6(5):427-433.
    [3] 赵蓉, 郑涛, 孙晨, 等. 沈阳得利满AO工艺升级为改良A2O工艺的可行性研究[J]. 环境工程技术学报, 2016, 6(6):547-552.

    ZHAO R, ZHENG T, SUN C, et al. Feasibility study on modified A2O process to upgrade and reconstruct Shenyang degremont anoxic oxic process[J]. Journal of Environmental Engineering Technology, 2016, 6(6):547-552.
    [4] BU F, HU X, XIE L, et al. Cassava stillage and its anaerobic fermentation liquid as external carbon sources in biological nutrient removal[J]. Journal of Zhejiang University:Science B, 2015, 16(4):304-316.
    doi: 10.1631/jzus.B1400106
    [5] XIE J Y, GUO Y, LI Y F. The role of external carbon sources at each stage of an A2/O process for simultaneously removing nitrogen and phosphorus[J]. Environmental Progress & Sustainable Energy, 2018, 37(6):2010-2015.
    [6] 常洋, 王彤, 王海燕, 等. 芦苇碳源-表面流人工湿地对农田退水脱氮的长期效能研究[J]. 环境工程技术学报, 2016, 6(5):453-461.

    CHANG Y, WANG T, WANG H Y, et al. The long-term nitrogen removal efficiency from agricultural runoff in phragmites australis packed surface flow constructed wetland[J]. Journal of Environmental Engineering Technology, 2016, 6(5):453-461.
    [7] 马玉霞, 谭蕾蕾, 沈志强, 等. Ca(OH)2预处理的秸秆作为固体碳源的反硝化性能[J]. 环境工程技术学报, 2017, 7(2):46-52.

    MA Y X, TAN L L, SHEN Z Q, et al. Study on denitrification performance using calcium hydroxide pretreated straw as solid carbon source[J]. Journal of Environmental Engineering Technology, 2017, 7(2):46-52.
    [8] 李易寰, 奚蕾蕾, 钟奕杰, 等. 倒置A2/O工艺运行效果及优化控制方案[J]. 环境工程, 2020, 38(3):76-81.

    LI Y H, XI L L, ZHONG Y J, et al. Operation effect and control scheme optimization of an inverted A2/O process[J]. Environmental Engineering, 2020, 38(3):76-81.
    [9] HU X, SOBOTKA D, CZERWIONKA K, et al. Effects of different external carbon sources and electron acceptors on interactions between denitrification and phosphorus removal in biological nutrient removal processes[J]. Journal of Zhejiang University:Science B, 2018, 19(4):305-316.
    doi: 10.1631/jzus.B1700064
    [10] 黄庆涛, 宋秀兰. 外加碳源对AOA-SBR工艺脱氮除磷效果的影响[J]. 工业水处理, 2017, 37(9):26-29.

    HUANG Q T, SONG X L. Influences of extra carbon sources on the removal of nitrogen and phosphate by AOA-SBR process[J]. Industrial Water Treatment, 2017, 37(9):26-29.
    [11] 顾学林. 低C/N值污水处理的总氮达标研究[J]. 中国给水排水, 2019, 35(9):96-99.

    GU X L. Discharge standard achievement of TN in treatment of sewage with low C/N ratio[J]. China Water & Wastewater, 2019, 35(9):96-99.
    [12] WU C Y, PENG Y Z, LI X L, et al. Effect of carbon source on biological nitrogen and phosphorus removal in an anaerobic-anoxic-oxic (A2O) process[J]. Journal of Environmental Engineering, 2010, 136(11):1248-1254.
    doi: 10.1061/(ASCE)EE.1943-7870.0000262
    [13] JOHN K D, ZHANG H, LI Y F. The external carbon source to each stages of A2/O process for simultaneously nitrogen and phosphorus removal[J]. Journal of Agriculture and Environmental Sciences, 2019, 8(1):140-153.
    [14] 杨杰, 李冬, 罗亚红, 等. SBR后置缺氧反硝化除磷的启动及去除性能[J]. 中国环境科学, 2016, 36(5):1376-1383.

    YANG J, LI D, LUO Y H, et al. The start-up and performance of denitrifying phosphorus removal process in a post-anoxic SBR system[J]. China Environmental Science, 2016, 36(5):1376-1383.
    [15] WISNIEWSKI K, KOWALSKI M, MAKINIA J. Modeling nitrous oxide production by a denitrifying-enhanced biologically phosphorus removing (EBPR) activated sludge in the presence of different carbon sources and electron acceptors[J]. Water Research, 2018, 142:55-64.
    doi: 10.1016/j.watres.2018.05.041
    [16] PANSWAD T, TONGKHAMMAK N, ANOTAI J. Estimation of intracellular phosphorus content of phosphorus-accumulating organisms at different P:COD feeding ratios[J]. Journal of Environmental Management, 2007, 84(2):141-145.
    doi: 10.1016/j.jenvman.2006.05.013
    [17] 楚想想, 罗丽, 王晓昌, 等. 我国城镇污水处理厂的能耗现状分析[J]. 中国给水排水, 2018, 34(7):70-74.

    CHU X X, LUO L, WANG X C, et al. Analysis on current energy consumption of wastewater treatment plants in China[J]. China Water & Wastewater, 2018, 34(7):70-74.
    • 相关文章
    • 施引文献
  • 资源附件(0)
  • 加载中
WeChat 点击查看大图
计量
  • 文章访问数:  414
  • HTML全文浏览量:  136
  • PDF下载量:  38
  • 被引次数: 0
出版历程
  • 收稿日期:  2021-02-08
  • 刊出日期:  2021-11-20

目录

    /

    返回文章
    返回

    版权所有 © 《环境工程技术学报》编辑部 京ICP备05031605号-2

    本系统由 北京仁和汇智信息技术有限公司 设计开发