LIUYing,LAIChang-qing.Renovation Practice of MSBR by Suspended Filler Coupled with Inclined Plate Sedimentation[J].China Water & Wastewater,2024,40(6):108-112.
Renovation Practice of MSBR by Suspended Filler Coupled with Inclined Plate Sedimentation
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第6期
Page:
108-112
Column:
Date of publication:
2024-03-17
- Keywords:
- upgrading and expansion; suspended filler; integrated inclined plate sedimentation; MSBR renovation; MBBR process
- 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.
Last Update:
2024-03-17