广州地埋式石井净水厂通风除臭设计

以地埋式污水厂——广州市石井净水厂通风除臭设计为实例,对预处理区、生化区楼板下池面空间、二沉池、污泥干化等区域的臭气收集后经生物除臭装置处理,然后经不低于15 m排放塔高空排放;预处理区和污泥干化等区域送风系统采用氧离子送风系统;生化区楼板上大空间及运泥车通道的通风经活性炭吸附后高空排放。设计需重点考虑通风、除臭、空调及防排烟等系统划分和计算,臭气收集与管线布置,以及地下空间气流组织等难点。目前该项目已投入运营,实际运行数据表明,运行效果较好,满足各项标准。最后对该项目需要注意的设计细节和不足之处进行了分析。

Ventilation and Deodorization Design of Shijing Underground Wastewater Treatment Plant in Guangzhou City

Taking the ventilation and deodorization design of the underground wastewater treatment plant,namely Guangzhou Shijing wastewater treatment plant as an example,the odor collected in the pretreatment stage,the biochemical tank under the floor,the secondary sedimentation tank,and the sludge drying stage was treated by the deodorizing device of biotricking filter,and was discharged at high altitude through not less than 15 m discharge tower;and the air supply system of the pretreatment stage and sludge drying stage adopted an oxygen ion supply system;the ventilation of the large space on the floor of the biochemical tank and the sludge truck channel was adsorbed by activated carbon and was discharged into the discharge tower.The design needed to focus on the system division and calculation of ventilation,deodorization,air conditioning,smoke protection and exhaust,odor collection and pipeline layout,and underground space airflow organization.The project has been put into operation,which could meet the design requirements.Finally,the details and deficiencies that need attention in the project were analyzed.