建筑废弃物对水体有机物和总磷的去除效果及作用方式  

Removal effect and mode of organic matter and total phosphorus in water body by construction waste

作　　者：李文凯 朱畅 门颖欣 冯兴圣 冯荣虎 刘辉 成文虎 雷宏伟 郑天龙 LI Wenkai;ZHU Chang;MEN Yingxin;FENG Xingsheng;FENG Ronghu;LIU Hui;CHENG Wenhu;LEI Hongwei;ZHENG Tianlong(SCEGC No.12 Construction Engineering Group Co.,Ltd.,Ankang 725000,China;Inner Mongolia University of Technology,Hohhot 010051,China;Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China)

机构地区：[1]陕西建工第十二建设集团有限公司,安康725000 [2]内蒙古工业大学,呼和浩特010051 [3]中国科学院生态环境研究中心,北京100085

出　　处：《环境保护科学》2024年第2期117-123,共7页Environmental Protection Science

基　　金：陕西省住房城乡建设科技计划项目(2021-K46);陕西省创新能力支撑计划(2022KJXX-14);秦创原引用高层次创新创业人才项目(QCYRCXM-2022-73)。

摘　　要：文章通过研究加气块、混凝土、砂浆和红砖4种建筑废弃物对水体有机物和总磷(TP)的去除效果和作用方式发现:4种建筑废弃物均可实现水体中有机物和TP的去除,其中加气块(平均去除率>50%,去除量达0.33 mg/g)和红砖(平均去除率>35%,去除量达0.22 mg/g)具有较高的有机物去除效果,砂浆(平均去除率>70%,去除量达0.018 mg/g)和加气块(平均去除率超过45%,去除量达0.013 mg/g)具有较高的TP去除效果;4种建筑废弃物均可能通过水合有机物物理吸附的方式去除有机物,加气块、混凝土、砂浆可能通过磷酸钙类沉淀生成型化学吸附方式去除TP,红砖可能通过磷酸铝类表面络合型化学吸附方式去除TP。该研究有助于深化建筑废弃物用于水污染控制的机理认知并帮助改进其技术参数。By studying the removal effect and action mode of four kinds of construction wastes,namely aerated block,concrete,mortar and red brick,it is found that all four kinds of construction wastes can remove organic matter and total phosphorus(TP)in water,among which aerated block(average removal rate>50%,removal amount is 0.33 mg/g)and red brick(average removal rate>35%,removal amount is 0.22 mg/g).Mortar(average removal rate>70%,removal amount up to 0.018 mg/g)and aerated block(average removal rate over 45%,removal amount up to 0.013 mg/g)have higher TP removal effect.All four kinds of construction waste may remove organic matter by physical adsorption of hydrated organic matter,aerated block,concrete and mortar may remove TP by precipitation-generating chemical adsorption of calcium phosphate,and red brick may remove TP by surface complexation chemical adsorption of aluminum phosphate.It is helpful to deepen the understanding of the mechanism of construction waste used in water pollution control and help improve its technical parameters.

关 键 词：建筑废弃物 有机物 磷 效果 机理 

分 类 号：X52[环境科学与工程—环境工程] X799.1