基于海绵铁-斜发沸石组合系统的模拟农村黑臭水体脱氮除磷研究  

Research on Nitrogen and Phosphorus Removal from Simulate Rural Black and Odorous Water Bodies Using a Sponge Iron-Clinoptilolite Composite System

作　　者：杨纪新 刘玲花[1] 王学东[2] YANG Jixin;LIU Linghua;WANG Xuedong(Department of Water Ecology and Environment,China Institute of Water Resources and Hydropower Research,Beijing,100038,China;College of Resource Environment and Tourism,Capital Normal University,Beijing,100048,China)

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

出　　处：《水处理技术》2024年第9期51-58,64,共9页Technology of Water Treatment

基　　金：国家重点研发计划项目(2019YFD1100205)。

摘　　要：农村水体黑臭污染现象仍不容忽视。研究以海绵铁及斜发沸石为基质,分别按0/1、1/10、1/5及1/1的填充体积配比构建了四组柱反应器(Device-Ⅰ~Device-Ⅳ),考察了各反应器在连续流及潮汐流进水方式下对低C/N模拟农村黑臭水体中氮磷等污染物的脱除表现,并对作用前后的填料进行表征,分析了反应器内微生物的自然生长情况。结果表明,海绵铁可强化系统NO_(3)^(-)-N及TP的去除效果,并在潮汐流下利于COD的去除。潮汐进水方式下,具海绵铁反应器的NO_(3)^(-)-N及TP去除率均可分别超过98%及95%,Device-Ⅱ平均NO_(3)^(-)-N及TP去除率分别可达99.66%及99.36%,COD最高去除率可达93.38%。系统NH_(4)^(+)-N的脱除依赖于斜发沸石的作用,潮汐进水促进了沸石系统的生物再生,可弥补连续流下氧缺乏及微生物作用低下对系统NH4+-N脱除的限制。The issue of rural water bodies suffering from black and odorous pollution still cannot be ignored.In this study,four column reactors(Device-Ⅰ~Device-Ⅳ)were constructed by filling sponge iron and clinoptilolite as substrates with different filling volume ratios of 0/1,1/10,1/5,and 1/1,respectively.The performance of each reactor was investigated under continuous and tidal flow influent conditions,focusing on the removal of nitrogen,phosphorus,and other pollutants from simulated rural black and odorous water characterized by a low C/N ratio.Furthermore,the fillers were characterized both before and after their utilization,and an analysis was conducted on the natural growth of microorganisms within the reactors.The results indicate that sponge iron can enhances the removal of NO_(3)^(-)-N and TP in the system and promotes COD removal under tidal flow conditions.With tidal flow influent,the removal rates of NO_(3)^(-)-N and TP in the reactor with sponge iron can exceed 98%and 95%respectively.In the same condition,Device-II achieves an average removal rate of 99.66%for NO_(3)^(-)-N and 99.36%for TP,and the highest COD removal rate is above 93%.The removal of NH_(4)^(+)-N in the system depends on the action of clinoptilolite,and tidal flow influent promotes the biological regeneration of the clinoptilolite system,compensating for the limitations of oxygen deficiency and low microbial activity in NH_(4)^(+)-N removal under continuous flow conditions.

关 键 词：农村黑臭水体 海绵铁 斜发沸石 养分去除 

分 类 号：X703.1[环境科学与工程—环境工程]