东莞运河樟村断面氨氮超标的风险分析与治理策略  

Risk analysis and treatment strategy of excessive ammonia in Zhangcun cross-section of Dongguan canal

作　　者：吴昌政 谢全模 WU Changzheng;XIE Quanmo(Dongguan Municipal Party Committee Organization Department,Dongguan 523000,China;Guangdong Yiding Environmental Protection Engineering Co.Ltd.,Dongguan 523000,China)

机构地区：[1]东莞市委组织部,广东东莞523000 [2]广东亿鼎环保工程有限公司,广东东莞523000

出　　处：《环境保护科学》2022年第2期67-72,共6页Environmental Protection Science

摘　　要：文章以“东莞运河樟村国考断面达标”为案例,分析国考断面氨氮不达标的主要风险,同时,基于东莞运河的实际情况,首次提出了以“膨胀床曝气生物滤池(EBF)”为核心技术的上游水质净化厂改造方案,用于改善断面水质。结果表明,EBF技改后氨氮的去除率高达89.7%,出水氨氮的平均浓度为0.74 mg/L。技改后国考断面的氨氮月平均浓度基本能够达到IV类水质标准,并不断向好发展。同时,EBF工艺稳定高效,操作简单占地小,吨氨氮年削减运行费为传统城市污水处理厂的22.7%,表明该方案为目前最优的治理策略,在断面达标的同时带来巨大的经济效益、社会效益和人才效益。该研究能为同类型城市内河治理提供参考。In this paper,“Zhangcun cross-section of Dongguan canal”was taken as an example to analyze the main environmental risks for the ammonia unqualified at the national examination cross-sections.Meanwhile,based on the actual situation of the canal,a modification scheme with"Expanded Biological aerated Filter(EBF)"as the core technology practiced in the upstream water purification plant was firstly proposed to improve the water quality of the cross-section.Results showed that the removal rate of ammonia after EBF modification was raised to 89.7%,and the average concentration of ammonia in the effluent was 0.74 mg/L.The water quality of cross-section could basically achieve to the Class IV water quality standard after the implementation of modification scheme,and the water quality was becoming better.EBF was stable and efficient with a simple operation and a small occupation.And its annual operating costs was 22.7%of that of traditional urban sewage treatment plants in ammonia removal,indicating that the strategy was a optimal treatment strategy to achieve the standard at present with huge social and economic benefits as well as talent benefit.This study could provide a reference for the urban river management with similar problems.

关 键 词：城市内河治理 国考断面达标 氨氮 膨胀床曝气生物滤池 

分 类 号：X52[环境科学与工程—环境工程]