三亚市某小规模水质净化厂二期扩建工程设计经验

Design Experience of a Small-scale Water Quality Purification Plant Phase Ⅱ Expansion Project in Sanya

小规模水质净化厂二期扩建工程规模为1.5万m3/d,采用改良A2O+混凝沉淀池+纤维转盘过滤的主体工艺,设计出水水质满足GB 18918-2002《城镇污水处理厂污染物排放标准》中的一级A标准并满足GB/T 18921-2002《城市污水再生利用城市景观环境用水水质》的观赏性景观环境用水水景类标准;对二期扩建工程的工艺设计进行了总结和归纳,阐述了进出水水质及主要处理构筑物的设计方案,同时附有运行一段时间的情况及改进经验总结,可为同类型工程提供参考。

The scale of this small-scale water quality purification plant Phase II expansion project is15 000 m3/d. The main technology of the improved A2 O + coagulation settling tank + fiber turnplate filter is used in this project. The design effluent quality meets the standard A of the first class in Pollutant Discharge Standard of Municipal Wastewater Treatment Plant and the waterscape standard of water usage for ornamental landscape environment in Water Quality of Urban Wastewater Reuse for Urban Landscape Environment. This paper summarizes and concludes the technological design of the Phase II expansion project, sets forth the qualities of the influent and effluent, and the design scheme of main treatment structures, and also summarizes the conditions and improvement experience of the operation for a period,which can be referred for the similar projects.