LIUYing,LAIChang-qing.Renovation Practice of MSBR by Suspended Filler Coupled with Inclined Plate Sedimentation[J].China Water & Wastewater,2024,40(6):108-112.
悬浮填料耦合斜板沉淀改造MSBR的实践
- Title:
- Renovation Practice of MSBR by Suspended Filler Coupled with Inclined Plate Sedimentation
- Keywords:
- upgrading and expansion; suspended filler; integrated inclined plate sedimentation; MSBR renovation; MBBR process
- 摘要:
- 某污水处理厂一期工程采用MSBR工艺，处理规模为20×104 m3/d，出水水质执行《城镇污水处理厂污染物排放标准》（GB 18918—2002）的一级A标准。因上位规划调整、建设边界条件限制及流域水环境治理持续推进的需要，该厂一期工程处理规模需原位扩容至25×104 m3/d，出水水质要求提升至项目所在地一级标准（地表水准Ⅳ类）。针对现状MSBR池容小、泥水分离效果差、跑泥、功能分区未能实现氮磷强化去除等问题，改造方案充分利用现有池体结构及设备，通过重新调整功能分区、投加填料、增设斜板澄清等措施，形成“悬浮填料耦合斜板沉淀”的新型组合工艺，实现了原位扩容提标的双重目标。该项目实施后，运行情况良好，出水水质可持续稳定达标。
- Abstract:
- The first phase project of a wastewater treatment plant (WWTP) adopts modified sequencing batch reactor (MSBR) process with capacity of 20×104 m3/d, and the effluent should meet first-level A criteria in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). Due to the adjustment of upper planning, the limitation of construction boundary conditions and continuous promotion of water environment management in the basin, the treatment scale of the first phase project needs to be expanded to 25×104 m3/d in-situ, and the effluent quality requirements are upgraded to the local primary standard i.e. quasi-Ⅳ in Environmental Quality Standards for Surface Water (GB 3838-2002). In response to the problems of small tank capacity, poor sludge and water separation, sludge running, and dysfunctional partitioning for nitrogen and phosphorus removal, the renovation plan makes full use of the existing tank structure and equipment and forms a new combination process of suspended filler coupled with inclined plate sedimentation by readjusting the functional partitioning, adding filler and the inlined plate clarification, thus to achieve the dual goal of in-situ expansion and upgrading. After the implementation of the project, the system is running well and the effluent quality can continue to meet the standard stably.
相似文献/References:
[1]付尧,张丽婷.一体式组合池及臭氧氧化用于污水厂准Ⅳ类提标扩建[J].中国给水排水,2020,36(22):141.
FU Yao,ZHANG Li-ting.Application of Integrated Secondary Treatment and Ozonation in WWTP Upgrading and Expansion to Meet Quasi-Ⅳ Standards[J].China Water & Wastewater,2020,36(6):141.
[2]刘影.MBBR、双填料滤池、MBR用于污水厂多期同步扩容提标[J].中国给水排水,2021,37(18):63.
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