WUXiao-yu,ZHANGJian-liang,WENLong-jia,et al.Design of Longgui Wastewater Treatment Plant Phase Ⅲ Expansion Project[J].China Water & Wastewater,2025,41(24):63-69.
龙归污水处理厂三期扩建工程设计
- Title:
- Design of Longgui Wastewater Treatment Plant Phase Ⅲ Expansion Project
- 关键词:
- 地下式污水处理厂; 扩建; 改良AAOA+MBR工艺; 低温热干化工艺
- Keywords:
- underground wastewater treatment plant; expansion; modified AAOA+MBR process; low?temperature thermal drying process
- 摘要:
- 针对龙归污水处理厂一、二期工程建成投产后均处于满（超）负荷运行状态，无法满足区域实际污水量处理需求的问题，开展三期扩建工程。工程设计规模15.0×104 m3/d，采用地下建设形式，主体工艺采用深度脱氮除磷的改良AAOA+MBR，并利用EnviroSim BioWin软件模拟多点进水和多点回流，从而选用最佳进水比和回流比。污泥处理采用低温热干化工艺，大大降低了能耗，同时有效避免了有机物大量挥发，保存了污泥热值。设计施工过程中通过BIM对管线进行综合优化调整，达到节约材料、优化空间、规范美观的效果。扩建工程投运后运行稳定，处理水量基本达到设计规模，出水水质均优于设计标准。
- Abstract:
- Upon the completion and commissioning of phase Ⅰ and Ⅱ of Longgui wastewater treatment plant, both have been operating at full (or even overloaded) capacity, failing to meet the actual regional wastewater treatment demand. To address this issue, the phase Ⅲ expansion project has been launched, with a designed capacity of 15.0×104 m3/d. The project adopted an underground construction approach, utilizing a modified AAOA + MBR process for advanced nitrogen and phosphorus removal. EnviroSim BioWin software was employed to simulate multi-point influent distribution and multi-point reflux, enabling the selection of optimal influent and reflux ratios. For sludge treatment, a low-temperature thermal drying process was applied, which significantly reduced energy consumption while effectively minimizing the volatilization of organic matter and preserving the sludge calorific value. During the design and construction phases, BIM models were used to comprehensively optimize and adjust pipeline layouts, achieving material savings, spatial optimization, and aesthetically pleasing results. Since its commissioning, the expansion project has operated stably, with the treated volume reaching the designed capacity and the effluent quality consistently exceeding the specified standards.
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