强化生态浮床净化黑臭水体研究  

Study on Treatment of Black-Odorous Water by Strengthened Ecological Floating Bed

作　　者：程珊珊 刘玲花[1] 王学东[2] CHENG Shanshan;LIU Linghua;WANG Xuedong(China Institute of Water Resources and Hydropower Research,10038;College of Resource Environment and Tourism,Capital Normal University,100048,Beijing,China)

机构地区：[1]中国水利水电科学研究院,100038 [2]首都师范大学资源环境与旅游学院,100048:北京

出　　处：《水处理技术》2023年第7期130-136,141,共8页Technology of Water Treatment

基　　金：国家重点研发计划(2019YFD1100205)。

摘　　要：采用装载不同类型填料的生化物化耦合强化生态浮床处理低碳氮比黑臭水体。构建了Fe-C微电解强化生态浮床(ICEFB)、海绵铁微电解强化生态浮床(SIEFB)、沸石强化生态浮床(ZEFB)和生态浮床(EFB)四组反应器,比较不同浮床系统的脱氮除磷效果,考察DO质量浓度和进水NH_(4)^(+)-N质量浓度对氮、磷等营养盐去除效果的影响。结果表明,铁微电解填料的引入显著提高了生态浮床的脱氮除磷能力,与ZEFB和EFB相比,SIEFB和ICEFB具有较高的养分去除效率。在DO为2 mg/L、进水NH_(4)^(+)-N质量浓度为30 mg/L时,SIEFB对NH_(4)^(+)-N的去除率和去除负荷分别为99.33%和62.96 g/(m^(3)·d),TN的去除率和去除负荷分别为64.42%和56.78 g/(m^(3)·d),TP的去除率和去除负荷分别为88.51%和10.73 g/(m^(3)·d)。SIEFB的SND效率最高,为84.80%,具有较好的同步硝化反硝化效果。动力学研究结果表明,生态浮床系统内的NH_(4)^(+)-N的降解过程符合准零级动力学方程,TN和TP的降解过程符合准一级动力学方程。综上所述,海绵铁和Fe-C微电解是行之有效且有应用前景的生态浮床强化技术。Based on the biochemical and physicochemical coupling process,ecological floating beds with different types of medium were constructed to treat black-odorous water with low C/N.Four sets of reactors,namely iron carbon electrolysis ecological floating bed(ICEFB),sponge iron electrolysis ecological floating bed(SIEFB),zeolite ecological floating bed(ZEFB),and ecological floating bed(EFB),were constructed.The effects of DO concentration and influent NH_(4)^(+)-N concentration on the removal efficiencies of nitrogen and phosphorus were compared.Results showed that the introduction of iron micro-electrolysis medium significantly improved the nitrogen and phosphorus removal capacity of the ecological floating bed.SIEFB and ICEFB had greater nutrient removal efficiency than that of ZEFB and EFB.When DO concentration was 2 mg/L and influent NH_(4)^(+)-N concentration was 30 mg/L,the removal rate and removal load of NH_(4)^(+)-N for SIEFB were 99.33%and 66.96 g/(m^(3)·d)respectively;the removal rate and removal load of TN were 64.42%and 56.78 g/(m^(3)·d)respectively;the removal rate and removal load of TP were 88.51%and 10.73 g/(m^(3)·d),respectively.The SND efficiency of SIEFB was the highest(84.80%).The kinetic study showed that the degradation of NH_(4)^(+)-N in the ecological floating bed followed the quasi-zero-order kinetic equation,whereas the degradation of TN and TP followed the quasi-first-order kinetic equation.In conclusion,sponge iron and Fe-C micro-electrolysis are effective and promising technologies to enhance the performance of ecological floating beds.

关 键 词：海绵铁 FE-C 生态浮床 脱氮除磷 黑臭水体 

分 类 号：X703.1[环境科学与工程—环境工程]