摘要
采用过氧化钙、膨润土、水泥和河砂制备了球形复合缓释氧材料(oxygen slow-releasing bead,简称OSRB),并用于地表黑臭水体中氮磷等污染物的去除。实验室研究结果表明:按每平米底泥表面积投加75 gOSRB后,显著提高了上覆水中CODCr、NH4^+-N和总磷(TP)的去除效率,去除率分别为46%、45%和61%(p<0.05)。但NO3^--N和总氮(TN)浓度与对照相比反而有所增加。同时研究发现,投加OSRB后上覆水中的总碱度(TA)和总硬度(TH)略有上升,和不加OSRB处理的对照组没有显著性差别(p>0.05)。研究结论有助于更好地了解OSRB处理对水生生态系统恢复的影响。
An oxygen slow-releasing bead(OSRB)was synthesized by calcium peroxide,bentonite,portland ce.ment and river sand,and monitored for characterizing its effects on pollutant removal and total alkalinity(TA)and total hardness(TH)in overlying water.The result showed that when the applied OSRB was 75 g OSRB m.2 sediment surface,OSRB treatment improved the removal efficiency of CODCr NH+4-N and total phosphorus,which were 46%,45%and 61%(p<0.05),respectively.Conversely,nitrate and total nitrogen concentration were higher than that of the control.In addition,TA and TH had a slight increase after OSRB treatment,but had no obvious difference from the control(p>0.05).Results from this work contribute to a better understand.ing of the efficiency and influence of the OSRB treatment on the restoration of aquatic ecosystem.
作者
黄荣才
梁艺丰
丁国良
吴通
刘虹
郑莹莹
刘文莉
HUANG Rongcai;LIANG Yifeng;DING Guoliang;WU Tong;LIU Hong;ZHENG Yingying;LIU Wenli(School of Civil Engineering and Architecture,Taizhou University,Taizhou 318000,Zhejiang,China)
出处
《台州学院学报》
2019年第3期42-47,共6页
Journal of Taizhou University
基金
浙江省自然科学基金(No.LY19E090001)
浙江省大学生科技创新活动计划(2018R436022)
关键词
缓释氧复合材料
化学需氧量
氮
磷
总碱度
总硬度
oxygen slow-releasing bead(OSRB)
chemical oxygen demand
nitrogen
phosphorus
total alkalini.ty
total hardness
