LILi,ZHAOBei,CHAIWen,et al.Analysis on Morphological Characteristics of Aluminum in Urban Drinking Water Distribution System[J].China Water & Wastewater,2022,38(5):9-13.
Analysis on Morphological Characteristics of Aluminum in Urban Drinking Water Distribution System
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第5期
Page:
9-13
Column:
Date of publication:
2022-03-01
- Keywords:
- drinking water distribution system; aluminum morphological characteristics; particulate aluminum
- Abstract:
- The hydraulic and water quality changes in the urban drinking water distribution system will have a certain influence on the form of aluminum in water. To clarify the morphological characteristics and variation rules of aluminum in the pipe network, different water supply environments were set in actual excavated pipe sections, and the changes of dissolved aluminum, particulate aluminum and total aluminum concentrations in the influent and effluent after soaking of the pipe sections were investigated. When the hydraulic condition in the pipe network was good, the probability of precipitation of particulate aluminum was small. The rise of pH promoted the dissolution of particulate aluminum. The newly formed particulate aluminum was easily carried out by the water flow. The stagnation of water flow and the decrease of pH were the key factors promoting the precipitation and deposition of particulate aluminum. The precipitated particulate aluminum in heterogeneous system was carried out by water flow, which led to high total aluminum concentration in a few tap water.
Last Update:
2022-03-01