摘要
蒸汽发生器排污水电除盐技术主要用于核动力厂二次侧蒸汽发生器排污水处理系统。与传统离子交换技术相比,电除盐技术具有产水水质好、固废少、无需酸碱再生等优点。研究针对AP1000堆型蒸汽发生器排污系统设计电除盐处理装置,最大处理量21.1 m^(3)/h,装置产水电导率<0.1μS/cm,满足核电厂二次侧回用要求。装置采用撬装模块化设计,结构紧凑,占地空间小,自动化程度高。考虑到来水流量的波动性,通过在线监测流量,自动选择与切换工作电除盐膜堆的数量。为了验证电除盐技术的可行性,设计并制造了中试样机,样机处理量为7 m^(3)/h。通过影响因素试验与参数验证试验,证明该电除盐装置可连续稳定运行,对AP1000堆型蒸汽发生器排污水处理产水电阻率达到16 mΩ·cm,最大流量下产水回用率达到90%。
The electrodeionization(EDI)technology applied mainly for waste water treatment for the secondary-side steam generator of nuclear power plants has more advantages on higher produced water quality,less solid waste and no need for acid-base regeneration compared with traditional ion exchange technologies.The paper introduces an electrodeionization(EDI)equipment specially designed for the steam generator of AP1000 reactors.The equipment that processes waste water at rate up to 21.1 m^(3)/h and produces cleaned water with conductivity less than 0.1μS/cm can meet the requirement by secondary-side equipment in terms of waste recovery.The EDI equipment of modulized design enjoys compact structure,small occupied space and higher automation level.The EDI modules can be selected and switched over by an on-line flow detector that monitors the change on the flow of incoming water.Influencing factors tests and parameter tests were performed with the pilot prototype with processing rate of 7 m^(3)/h that is made to verity the feasibility of EDI technology.The test results proves the EDI equipment can keep normal operation continuously and produce cleaned water with electrical resistivity above 16 mΩ·cm at recovery rate up to 90%even under maximum flow rate of waste water from the steam generator of AP1000 reactors.
作者
王昕彤
李心砚
李风风
王四芳
Wang Xintong;Li Xinyan;Li Fengfeng;Wang Sifang
出处
《一重技术》
2021年第1期5-9,共5页
CFHI Technology
关键词
蒸汽发生器排污系统
电除盐
产水水质
回用
steam generator blowdown system
EDI
quality of produced water
recovery
