煤炭工程 ›› 2025, Vol. 57 ›› Issue (8): 37-41.doi: 10. 11799/ ce202508006

• 设计技术 • 上一篇    下一篇

改良AAO工艺在煤矿生活污水处理中的应用

李选龙,刘钢潮,程吉宁   

  1. 中煤西安设计工程有限责任公司,陕西 西安 710000
  • 收稿日期:2024-08-29 修回日期:2024-11-20 出版日期:2025-08-11 发布日期:2025-09-11
  • 通讯作者: 李选龙 E-mail:289235158@qq.com

Application effect of improved AAO process in coal mine domestic sewage treatment

  • Received:2024-08-29 Revised:2024-11-20 Online:2025-08-11 Published:2025-09-11

摘要:

煤矿生活污水具有水质波动大、有机物浓度低、悬浮物浓度高,煤矿距城市较远污泥处置成本高的等特点,且受环保政策限制需全部回用,传统处理工艺难以满足需求。文章以改良AAO工艺(AAO+悬浮填料工艺)为研究对象, 探讨其在煤矿生活污水处理中的应用效果及优化方向。通过延安市某煤矿的实际案例,分析表明该工艺在低碳氮比(BOD5/N=5.5)及低温(-21℃)条件下仍能稳定运行,出水水质优于设计标准,COD、BOD5、SS、NH3-N、TP去除率分别达97.8%、99.7%、99.7%、93.5%和87.1%,满足绿化用水和洗煤用水要求。改良AAO工艺的生物稳定性高,出水水质良好、稳定,污泥产量少、沉降性能良好。此外,改良AAO工艺具有运行与设计的灵活性,适用于既有处理站的提标扩容。优化研究表明,调整回流方式、引入污泥原位减量技术可进一步提升除磷效果并降低污泥处理成本。因此改良的AAO工艺(AAO+悬浮填料工艺)已成为煤矿生活污水处理的主流工艺

关键词: 煤矿生活污水 , AAO+悬浮填料 , 生物稳定性

Abstract:

Based on the characteristics of coal mine domestic sewage with large changes in water quality and quantity, low organic matter content and high cost of sludge disposal far away from the city, the application effect of modified AAO process ( AAO + suspended packing media process ) in coal domestic sewage treatment was analyzed. The effluent quality of the modified AAO processes is good and stable, and the amount of sludge is small. Therefore, the two modified AAO processes ( AAO + suspended packing media process ) have become the main process for coal mine domestic sewage treatment.

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