ZhuLiang,WuHao,GuJie.Design and Novel Technology Application for a Quasi-Ⅳ Criteria Wastewater Treatment Plant in Nanjing[J].China Water & Wastewater,2026,42(16):69-75.
南京某污水厂准Ⅳ类标准工艺设计及新技术应用
- Title:
- Design and Novel Technology Application for a Quasi-Ⅳ Criteria Wastewater Treatment Plant in Nanjing
- Keywords:
- wastewater treatment; modified AAO process; denitrifying deep-bed filter; sludge catalysis; BIM+GIS technology; smart management; surface water quasi-Ⅳ criteria
- 摘要:
- 南京某污水处理厂四期工程设计规模为12万m3/d，主体工艺采用“改良AAO池+二沉池+高密度沉淀池+反硝化深床滤池”。改良AAO池配合多点进水强化脱氮除磷，高密度沉淀池去除悬浮物（SS）和总磷（TP），反硝化深床滤池进一步去除SS、TP和总氮（TN）。采用污泥催化新技术对部分回流污泥进行筛选优化，提高回流污泥的生物活性，使系统抗冲击负荷能力提高15%、污泥产量降低20%。根据运行阶段连续14个月的进、出水监测数据，出水TN为6.66~9.98 mg/L，平均值为8.76 mg/L；出水TP为0.07~0.24 mg/L，平均值为0.14 mg/L；出水SS稳定在5 mg/L以下。出水水质满足《地表水环境质量标准》（GB 3838—2002）准Ⅳ类标准。设计采用建筑信息模型（BIM）与地理信息系统（GIS）技术，准确定位新建单体与现状场地及管网之间的关系，减少错漏碰缺，同时精确测量并快速计算土方量。智慧管理系统为该污水处理厂可视化生产、智慧决策等提供一体化运行管理平台。项目总投资为69 819.9万元，处理成本为1.06元/m3。
- Abstract:
- The designed capacity of the Nanjing wastewater treatment plant phase Ⅳ project is 12×104 m3/d. The treatment process comprises a modified AAO tank, secondary sedimentation tank, high-density sedimentation tank, and denitrifying deep-bed filter. The modified AAO process utilizes multi-point influent distribution to enhance nitrogen and phosphorus removal. The high-density sedimentation tank effectively removes SS and TP, while the denitrifying deep-bed filter provides further removal of SS, TP, and TN. A novel sludge catalytic technology is adopted to screen and optimize a portion of the return sludge, thereby enhancing its biological activity. This has resulted in a 15% increase in the system’s shock resistance capacity and a 20% reduction in sludge production. Based on 14 consecutive months of operational monitoring of influent and effluent quality, the effluent TN ranged from 6.66 mg/L to 9.98 mg/L, with an average of 8.76 mg/L. The effluent TP ranged from 0.07 mg/L to 0.24 mg/L, with an average of 0.14 mg/L. The effluent SS consistently remained below 5 mg/L. The effluent quality meets the quasi-Ⅳ criteria of the Environmental Quality Standards for Surface Water (GB 3838-2002). The design adopts BIM+GIS technology to accurately define the spatial relationship between new structures and existing site conditions and pipeline networks, thereby reducing errors, omissions, clashes, and deficiencies, while enabling precise measurement and rapid calculation of earthwork volumes. The smart management system provides a reliable platform for visual production and intelligent decision-making in the operational management of the wastewater treatment plant. The total project investment is 698.199 million CNY, with a treatment cost of 1.06 CNY/m3.
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