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污泥致密系统处理技术在污水处理厂的应用初探

邵彦鋆 王冰 周瑜 施俊 宗政辉 刘国强 陶翔 张欣 黄凯文 王燕 王硕 李激

邵彦鋆, 王冰, 周瑜, 施俊, 宗政辉, 刘国强, 陶翔, 张欣, 黄凯文, 王燕, 王硕, 李激. 污泥致密系统处理技术在污水处理厂的应用初探[J]. 环境工程, 2023, 41(9): 72-79. doi: 10.13205/j.hjgc.202309009
引用本文: 邵彦鋆, 王冰, 周瑜, 施俊, 宗政辉, 刘国强, 陶翔, 张欣, 黄凯文, 王燕, 王硕, 李激. 污泥致密系统处理技术在污水处理厂的应用初探[J]. 环境工程, 2023, 41(9): 72-79. doi: 10.13205/j.hjgc.202309009
SHAO Yanjun, WANG Bing, ZHOU Yu, SHI Jun, ZONG Zhenghui, LIU Guoqiang, TAO Xiang, ZHANG Xin, HUANG Kaiwen, WANG Yan, WANG Shuo, LI Ji. PRELIMINARY STUDY ON APPLICATION OF SLUDGE DENSIFICATION SYSTEM TECHNOLOGY IN AN INVERTED AAO CONTINUOUS FLOW WASTEWATER TREATMENT PLANT[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(9): 72-79. doi: 10.13205/j.hjgc.202309009
Citation: SHAO Yanjun, WANG Bing, ZHOU Yu, SHI Jun, ZONG Zhenghui, LIU Guoqiang, TAO Xiang, ZHANG Xin, HUANG Kaiwen, WANG Yan, WANG Shuo, LI Ji. PRELIMINARY STUDY ON APPLICATION OF SLUDGE DENSIFICATION SYSTEM TECHNOLOGY IN AN INVERTED AAO CONTINUOUS FLOW WASTEWATER TREATMENT PLANT[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(9): 72-79. doi: 10.13205/j.hjgc.202309009

污泥致密系统处理技术在污水处理厂的应用初探

doi: 10.13205/j.hjgc.202309009
基金项目: 

江苏省政策引导类计划(国际科技合作/港澳台科技合作)专项资金(BZ2021030);无锡市科技创新创业资金(M20211003)

详细信息
    作者简介:

    邵彦鋆(1997-),男,博士,主要研究方向为污水处理工艺及技术研究。yanjunshao97@163.com

    通讯作者:

    李激(1970-),女,博士,教授,主要研究方向为污水处理工艺及技术研究和污泥处理处置与资源化研究。liji@jiangnan.edu.cn

PRELIMINARY STUDY ON APPLICATION OF SLUDGE DENSIFICATION SYSTEM TECHNOLOGY IN AN INVERTED AAO CONTINUOUS FLOW WASTEWATER TREATMENT PLANT

  • 摘要: 选取无锡市某污水处理厂(设计规模15万m3/d)进行污泥致密系统处理技术(SDST)工艺优化,在外回流工艺段增设污泥致密模块以实现污泥沉降性能的有效提高。该厂采用倒置AAO工艺(缺氧/厌氧/好氧),一期和二期工程分别作为实验组和对照组,设计规模分别为4万,11万m3/d。致密模块以半覆盖式处理(最大处理量为原设计剩余污泥量的50%),成功运行90 d,一期工程TN去除能力显著提升,出水浓度下降14.7%,由6.32 mg/L下降至5.39 mg/L。启动阶段(1~36 d),一期好氧池污泥沉降速度提升至1.92 m/h,稳定提升阶段(42~90 d),其沉降速度和SVI30分别为(3.62±0.52) m/h和(49.3±5.5) mL/g,而二期分别为(1.93±0.35) m/h和(59.3±5.5) mL/g。污泥致密模块具有稳定的污泥致密作用,致密污泥MLSS为(19.3±2.75) g/L,SVI30仅为(36.7±9.0) mL/g。通过镜检成功观察到致密污泥中含有大量的小型颗粒状絮体,但颗粒化程度有限。研究发现,活性污泥中大量的纤维状和惰性无机物质是影响致密模块稳定运行的重要因素,通过增设螺旋式格栅可以保障致密模块的稳定运行,而无机物质中的砂、铁盐和铝盐等对系统的影响仍需进一步探讨。此外,耦合除砂措施并采用全覆盖式处理以优化改造致密模块是进一步提高致密污泥颗粒化程度的关键。该工程案例系SDST在国内倒置AAO连续流污水处理厂的首次成功应用,将为国内存量污水处理厂的升级改造提供重要思路。
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出版历程
  • 收稿日期:  2023-08-05
  • 网络出版日期:  2023-11-15

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