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[部长信箱]关于事故应急池建设方式及容积计算问题的回复
  • 05/24 00:00
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来信: 对使用到化学品的工贸企业环境应急预案评审时,各地专家对事故应急池的建设方式和容积计算存在不同的意见,如有些专家认为污水处理系统的调节池剩余容积可以用作事故应急池使用,但有些专家不认可。另外在事故应急池容积的计算上,有些专家认为可以利用企业内的雨水管网、生产车间(在车间出入口设置漫坡形成收集空间)收集部分事故废水,因而在计算事故应急池容积时作为V3(发生事故时可以转输到其它储存或处理设施的物料量)计算,最终得出不需建设事故应急池或事故应急池建设容积较小的结论。 由于目前已有的关于事故应急池计算的技术文件中并未对事故应急池建设方式及事故废水收纳方式(是否可以兼用还是只能专用)予以明确,各地环保部门的标准也不一样。请问是否可以给个具体的指导意见? 

02/15 10:33

尊敬的部长: 针对事故应急池建设方式及容积计算问题,经过研究,相关内容已给出如下回复: 1、建设方式:事故应急池应以固定蓄满容积为标准,建设方式一般采用渗滤池的建设方法,改造可考虑洞窖式蓄洪池或改建围堤及挖沟方式安装渗滤池。 2、容积计算:容积计算应根据具体情况综合考虑,包括对往放事故水量、下渗水量、水位降到安全位置等因素做考虑,同时受地形、地质、地貌、河床高程等影响,最终计算出容积。 希望以上回复能够给您带来帮助,如有任何疑问,敬请随时与我们联系。 谨上。


06/27 21:23

目前,涉及到事故应急池的规范性文件主要有《建设项目环境风险评价技术导则》(HJ169-2018)《化工建设项目环境保护设计规范》(GB50483-2019)《石化企业水体环境风险防控技术要求》(Q/SH 0729-2018)等。 实践中,有的企业在事故发生后,利用围堰、防火堤、排水设施等暂存事故废水,有效控制了事故废水不进入外环境。企业可参考上述文件中相关要求和计算公式,结合自身特点,设计、建设、管理事故应急池。当项目环境影响评价报告对事故应急池有要求时,应按相关要求建设事故应急池。 根据《建设项目环境风险评价技术导则》(HJ169-2018)和《化工建设项目环境保护设计规范》(GB50483-2019)有关规定,事故应急池宜采取地下式,使事故废水重力流排入。关于事故应急池是否可以兼用,目前尚无明确规定,企业可参考《石化企业水体环境风险防控技术要求》(Q/SH 0729-2018),结合自身实际,规范使用和管理。


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