三聚氰胺脲醛树脂发泡体应用于绿色屋顶基质的效果  

Effect of melamine urea formaldehyde resin foam in green roof substrate

作　　者：董悦 易宁 章茹[1,2] 候元元 DONG Yue;YI Ning;ZHANG Ru;HOU Yuanyuan(School of Resources and Environment,Nanchang University,Nanchang 330031,China;Key Laboratory of Poyang Lake Environment and Resource Utilization Ministry of Education,Nanchang University,Nanchang 330031,China;Analytical Testing Centre,Nanchang University,Nanchang 330031,China)

机构地区：[1]南昌大学资源与环境学院,江西南昌330031 [2]南昌大学鄱阳湖环境与资源利用教育部重点实验室,江西南昌330031 [3]南昌大学分析测试中心,江西南昌330031

出　　处：《南昌大学学报（理科版）》2022年第3期350-356,378,共8页Journal of Nanchang University(Natural Science)

基　　金：国家重点研发计划资助(2016YFC0401500);江西省科技计划项目(20171BBG70080)。

摘　　要：选用自制的三聚氰胺脲醛树脂发泡体(MUF发泡体)加入红壤中作为绿色屋顶营养基质层,珍珠岩、蛭石、沸石和活性炭作为吸附基质层,构建4种不同配比的绿色屋顶模拟装置,选择3种不同降雨强度,通过监测绿色屋顶径流总氮、氨氮、硝氮、总磷浓度随降雨时间的变化规律,探讨其中氮磷迁移转化关系。结果表明:MUF发泡体添加后,绿色屋顶表现为氨氮、总磷的汇,总氮、硝氮的源;不同条件下各装置径流氮磷浓度与降雨时间整体呈负相关;不同基质配比下各装置总氮、氨氮平均浓度差异显著,而硝氮和总磷平均浓度无显著性差异。MUF发泡体添加量与各装置径流氨氮浓度呈显著正相关,与总磷呈负相关;降雨强度与各装置径流氨氮平均浓度呈正相关,与硝氮呈负相关。MUF发泡体基质不仅是高效除磷基质,还可以作为绿色屋顶植物的氮源,适合应用于绿色屋顶基质,同时解决了常用的基质容重较大和吸水保水性能差所造成屋顶荷载较大、截流减污效果差等问题。In this study,the self-made melamine urea-formaldehyde resin foam(MUF foam)was added to red soil as the green roof nutrient substrate layer,and the perlite,vermiculite,zeolite and activated carbon were used as the adsorption layer substrate to construct four green roof simulation devices with different ratios;three different rainfall intensities were chosen to monitor the changes with the rainfall duration;the concentration of total nitrogen,ammonia nitrogen,nitrate nitrogen,and total phosphorus in the runoff of the green roof were studied,and the relationship between nitrogen and phosphorus migration and transformation was explored,The results showed that after adding MUF foam,the green roof is shown to be the sink of ammonia nitrogen and total phosphorus,and to be the source of total nitrogen and nitrate nitrogen,Under different conditions,the concentration of nitrogen and phosphorus in runoff of each device was negatively correlated with rainfall time as a whole;Under different substrate ratios,the average concentrations of total nitrogen and ammonia nitrogen in each device were significantly different,while the average concentrations of nitrate nitrogen and total phosphorus were not significantly different,The addition amount of MUF foam was significantly positively correlated with ammonia nitrogen concentration in runoff of each device,and negatively correlated with total phosphorus,The rainfall intensity was positively correlated with the average concentration of ammonia nitrogen in runoff of each device,and negatively correlated with nitrate nitrogen,MUF foam substrate is not only an efficient phosphorus removal substrate,but also a nitrogen source for green roof plants,It is suitable for green roof substrate and solves the problems of large roof load and poor interception and pollution reduction caused by large bulk density and poor water absorption and retention performance of commonly used matrix.

关 键 词：绿色屋顶 MUF发泡体 基质配比 降雨强度 氮磷释放规律 

分 类 号：TU985.12[建筑科学—城市规划与设计] X52[环境科学与工程—环境工程]