扩散控制条件下铝基混凝剂除低浓度磷的效果研究  

Removal effect of low concentration phosphorus with Al-based coagulant under diffusion control

作　　者：李能能 吴福雨 张龙 樊小东 马彪 高磊 徐慧[2] 黄晨慧 王希 LI Nengneng;WU Fuyu;ZHANG Long;FAN Xiaodong;MA Biao;GAO Lei;XU Hui;HUANG Chenhui;WANG Xi(Ningxia Great Wall Water Co.,LTD.,Yinchuan 750000,China;State Key Laboratory of Environmental Water Quality,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;Yangtze River Delta Research Center for Eco-Environmental Sciences,Yiwu,Jinhua 321000,China;Sinochem Holdings Co.,Ltd.,Beijing,100031;Sinochem Environment Holdings Co.,Ltd.,Beijing 100160)

机构地区：[1]宁夏长城水务有限责任公司,银川750000 [2]中国科学院生态环境研究中心环境水质学国家重点实验室,北京100085 [3]长三角(义乌)生态环境研究中心,金华321000 [4]中国中化控股有限责任公司,北京100031 [5]中化环境控股有限公司,北京100160

出　　处：《环境保护科学》2024年第1期96-103,共8页Environmental Protection Science

基　　金：国家自然科学基金委员会重点项目(52030003)。

摘　　要：该研究比较了不同浓度AlCl_(3)和Al_(13)铝基混凝剂在深度不同的情况下对不同磷形态的去除特征。结果表明:AlCl_(3)表现出优异的控磷能力,AlCl_(3)能够在2 h静沉后使总磷(TP)下降至9μg/L,并可在较短时间内降低溶解态磷,而Al_(13)对吸附态磷的去除效果更好;AlCl_(3)和Al_(13)都有助于表层水中颗粒态磷的去除,在pH=7.5的条件下,磷以Al-P沉淀的形式得以去除;AlCl_(3)具有更优的有机物去除能力,能够在0.5 h时使DOC浓度快速降低。研究结果可为选择合适的控磷药剂和投药量提供参考,有助于制定原位磷污染控制策略及维护生态健康。The study compared the removal characteristics of different phosphorus forms at different depths with different concentrations of AlCl3 and Al13 aluminium-based coagulants.AlCl3 showed excellent phosphorus control,with AlCl3 reducing total phosphorus(TP)to 9μg/L after 2 h of sedimentation and reducing dissolved phosphorus in a shorter period of time.Both AlCl3 and Al13 contributed to the removal of particulate phosphorus from the surface water.At pH=7.5,phosphorus was removed in the form of Al-P precipitation.AlCl3 had a better ability to remove organic matter and was able to reduce the DOC concentration rapidly at 0.5 h.The results of the study can provide a reference for the selection of suitable phosphorus control agents and dosage,and help to develop in-situ phosphorus pollution control strategies and maintain ecological health.

关 键 词：扩散控制 铝基混凝剂 磷形态 混凝 除磷 

分 类 号：X52[环境科学与工程—环境工程]