地下式污水处理厂防烟排烟设计探讨

以多个工程设计实践为基础,对地下式污水处理厂箱体的防烟排烟系统设计进行分析,总结了设计经验。防烟楼梯间及其前室防烟推荐采用楼梯间加压送风、前室不送风的布置方式;排烟设计中建议仅对长度超过40 m的疏散走道进行排烟设计,箱体空间及底层管廊间不建议设置排烟系统;无自然通风条件的变配电间,推荐设置事故后通风设施;防排烟机房应结合绿化、工艺布置等条件设置,力求系统简单、可靠。

Design of Smoke Protection and Smoke Exhaust in Underground Wastewater Treatment Plant

Design analysis and summary of smoke protection and exhaust system of underground wastewater treatment plant were conducted based on some typical cases.In the smoke-proof staircase and its anteroom,it was recommended to adopt pressurized air supply in staircase and non-air supply in anteroom;in smoke exhaust design,smoke exhaust system design was recommended only for evacuation corridors with length over 40 m,no smoke exhaust system was installed in the box space and the bottom pipe corridor.For transformer and distribution rooms without natural ventilation conditions,post-accident ventilation facilities were suggested;the smoke protection and exhaust machine room should be set up in combination with greening and technological arrangement,so as to make the system simple and reliable.