某电厂再生水深度处理系统问题诊断分析  

Problem diagnosis and analysis of advanced treatment system for reclaimed water in a power plant

作　　者：韩琳 程勇明[2] 王冬梅 李亚娟[2] 张杰 HAN Lin;CHENG Yongming;WANG Dongmei;LI Yajuan;ZHANG Jie(Ji’nan Shanyuan Environmental Protection Technology Co.,Ltd.,Ji’nan 250011,China;Xi’an Thermal Power Research Institute Co.,Ltd.,Xi’an 710054,China;Huadian Electric Power Research Institute Co.,Ltd.,Hangzhou 310030,China)

机构地区：[1]济南山源环保科技有限公司,山东济南250011 [2]西安热工研究院有限公司,陕西西安710054 [3]华电电力科学研究院有限公司,浙江杭州310030

出　　处：《工业水处理》2024年第3期206-210,共5页Industrial Water Treatment

摘　　要：某电厂将城市污水处理厂再生水深度处理后作为循环水系统补水。由于再生水深度处理系统存在机械加速澄清池出力达不到设计值、出水水质差、污泥脱水系统无法正常运行、石灰系统下料堵塞、加药装置泄露严重且无连锁控制等问题,无法满足电厂正常使用再生水的要求。经过问题诊断,提出优化改造方案:分别对机械加速澄清池内部结构、底部排泥管路系统改造,以恢复机械加速澄清池处理能力,满足系统所需水量的要求;对污泥脱水系统进行改造,以恢复污泥脱水单元运行;对石灰加药系统进行改造,以改善石灰加药下料堵塞等问题,恢复石灰系统的稳定运行。通过以上措施澄清池出力提高,系统出水水质得以优化,有效保证了再生水深度处理系统的正常运行以及电厂用水安全。The reclaimed water of municipal sewage plant after advanced treatment in a power plant is used as makeup of circulating water system.Due to the problems in the advanced treatment system of reclaimed water,such as the output of the mechanical acceleration clarification tank failing to reach the designed value,poor effluent quality,the sludge dewatering system failing to operate normally,the feeding blockage of the lime system,the widespread leakage of the dosing device and no chain control,etc.,the requirements for normal use of reclaimed water in the power plant can’t be met.After the diagnosis of the problems,the optimization scheme was put forward.The internal structure of the mechanical acceleration clarification tank and the bottom sludge discharge pipeline system were modified respectively to restore the processing capacity of the mechanical acceleration clarification tank and meet the requirements of the water required of the system.The sludge dewatering system was modified to restore the sludge dewatering unit.The lime dosing system was modified to improve the problems of lime dosing and material blockage then restored the stable operation of the lime system.After optimization and transformation,the output of the clarification tank was improved,and the effluent quality of the system was optimized,effectively ensuring the normal operation of the deep treatment system for recycled water and the safety of water use in the power plant.

关 键 词：再生水深度处理系统 机械加速澄清池 污泥脱水 石灰加药 

分 类 号：X703[环境科学与工程—环境工程]