摘要
对A市给水系统中总铝及各形态铝的浓度进行样本量达5000余个的大规模统计分析,结果表明,管网终端给水点的总铝浓度具有随时间和空间改变而出现差异的特征,同一时刻不同终端给水点总铝浓度存在差异,同一终端给水点的不同时刻总铝浓度也会出现明显差异;铝的形态分布特征为:水样中的总铝浓度越高,其中的颗粒态铝浓度也越高。对管网终端给水点总铝浓度差异机制分析发现,从给水管网前端到终端的整个供水输配过程中,铝形态的改变是引起终端给水点中总铝浓度差异的根本原因;铝的非均相体系平衡原理是解释这种差异的重要理论。
Concentration of total aluminum and different aluminum species in a water distribution system of city A with sample numbers of more than 5000 was statistically analyzed.The total aluminum concentration at terminal nodes of pipe network varied with time and space.There were differences in the total aluminum concentration at different terminal nodes at the same time and at the same terminal nodes at different time.The distribution characteristics of aluminum species were as follows:the higher the concentration of total aluminum,the higher the concentration of particulate aluminum.Based on the difference mechanism analysis of total aluminum concentration at terminal nodes of water distribution system,it was found that the fundamental reason for the difference was the change of aluminum species during the whole water distribution process.The equilibrium principle of heterogeneous aluminum system was an important theory to explain the difference.
作者
李礼
郑鹏
赵蓓
李玉仙
温颖
LI Li;ZHENG Peng;ZHAO Bei;LI Yu-xian;WEN Ying(Beijing Engineering Research Center for Drinking Water Quality,Beijing Waterworks Group Co.Ltd.,Beijing 100192,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2020年第7期32-36,共5页
China Water & Wastewater
基金
国家水体污染控制与治理科技重大专项(2017ZX07108002)。
关键词
城市管网
铝形态
总铝浓度
urban water distribution system
aluminum species
total aluminum concentration
