ZHOUJia-zhong,HANWen-jie,WUDi,et al.Discussion on Series Solutions of MBBR Process Applied to Municipal Sewage Treatment[J].China Water & Wastewater,2023,39(12):1-12.
MBBR工艺应用于市政污水处理的系列解决方案探讨
- Title:
- Discussion on Series Solutions of MBBR Process Applied to Municipal Sewage Treatment
- 关键词:
- 悬浮载体; 泥膜复合; 纯膜; 磁混凝; 悬浮载体生物膜-磁混凝
- Keywords:
- suspended carriers; IFAS; pure MBBR; magnetic coagulation; BFM
- 摘要:
- 针对我国污水处理用地少、标准高、难稳定等问题，移动床生物膜工艺（MBBR）展现出了节地、高效、灵活、稳定的工艺优势，获得了良好应用效果，国内应用规模已达到2 500×104 m3/d。MBBR工艺按微生物存在主要方式分为泥膜复合MBBR工艺和纯膜MBBR工艺，分别隶属活性污泥法和生物膜法；同时纯膜MBBR耦合磁混凝沉淀形成了具备脱氮除磷功能的BFM（Biofilm & Magnetic）工艺。针对国内水质复杂、类型多样的问题，形成了MBBR工艺应用于市政污水处理的系列解决方案。针对泥膜复合MBBR工艺改造实现原池提标或30%～50%的提量、BFM工艺原位改造实现原池提标或2倍以上的提量、BFM工艺新建深度脱氮除磷实现地表水准Ⅳ类及更高排放标准、BFM工艺新建旁位处理设施实现原厂分流或提量等解决方案，探讨了各解决方案的优势、适用场景和实际应用效果，并针对泥膜复合MBBR工艺原池改造进一步提出了4条实施技术路线。MBBR工艺能够有效满足各类污水厂新、改、扩建需求，尤其是基于纯膜MBBR的BFM工艺，占地更加集约，配合装配式建设同时可展现出快速实施、灵活布置等特点，通过加载智水优控云平台，能够实现污水厂运行的管理升级与节能降耗。BFM工艺适用于市政污水、工业废水、黑臭水体、初期雨水、农村污水等多种水环境综合治理场景。围绕绿色低碳污水处理技术的开展，以悬浮载体为基体，实现基于MBBR的厌氧氨氧化工艺，是BFM工艺下一步的发展方向。
- Abstract:
- For municipal sewage treatment, aiming at the challenges of less land for sewage treatment, high discharge standards, and uncontrollable stability in China, the Moving Bed Biofilm Reactor (MBBR) process shows the advantages of land saving, high efficiency, flexibility and stability, which has achieved good practical effects. The application scale has reached 2 500× 104 m3/d in China. According to the main mode of existence of microorganisms, MBBR process is divided into integrated fixed-film activated sludge (IFAS) and pure MBBR, which belong to activated sludge process and biofilm process, respectively. At the same time, the pure MBBR coupled with magnetic coagulation precipitation has formed BFM (Biofilm & Magnetic) process with nitrogen and phosphorus removal function. Since the sewage quality is complex and sewage types are varied, a series of solutions for the application of MBBR process to municipal sewage treatment have been formed. For the solutions of the IFAS original biochemical pool, the reconstruction could increase the sewage treatment capacity within 30%-50% of the original tank treatment standard. The BFM process in-situ reconstruction could increase the sewage treatment capacity by more than twice of the original tank standard. The new-built BFM process for deep nitrogen and phosphorus removal achieves the quasi-Ⅳ class of surface water quality standard and even higher discharge standards. The new-built BFM process with side treatment facilities increase the sewage treatment capacity of the whole plant. For each process, the advantages, application scenarios and practical application effects are discussed, and four technical routes are further proposed for the reconstruction of the original biochemical pool of IFAS. The MBBR process can effectively solve the needs of new-built, reconstruction and expansion of various WWTPs. Especially, the BFM process based on pure membrane MBBR occupies less land, showing the characteristics of rapid implementation and flexible layout with assembly construction. By loading the intelligent water optimal control cloud platform, the management upgrading, energy conservation and consumption reduction of WWTP operation can be realized. The BFM process is suitable for comprehensive treatment scenarios, such as municipal sewage treatment, industrial wastewater treatment, black and odorous water body treatment, initial runoff treatment and rural sewage treatment. Focusing on the development of green and low-carbon sewage treatment technologies, the realization of MBBR-based Anammox process with suspended carriers as the matrix is the development direction of BFM process in future.
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