Effect of catalysis or oxidation actions of typical corrosion products on the generation of disinfection byproducts in water supply pipeline

学生名:傅 凌霄

研究テーマ:Effect of Catalysis or Oxidation Actions of Typical Corrosion Products on the Generation of Disinfection Byproducts in Water Supply Pipeline

(水道パイプラインにおける消毒副産物の生成に対する代表的な腐食生成物の触媒作用または酸化作用の影響)

入学年月:2017.04

修了年月:2023.03

取得学位:博士（工学）

論文概要:

In this study, the effect of two different PCPs (Pipe corrosion products) on the formation of DBPs (Disinfection byproducts) was studied when extracellular polymers were used as precursors. This will help to control the formation and conversion of DBPs, prevent the drinking water "secondary pollution", and ensure the safety and health of the water quality during the transmission and distribution of drinking water.
Chapter 1 is the research background and purpose of the study.
Chapter 2 is the applied materials and analytical methods.
Chapter 3 is the study on the formation of carbon (nitrogen)-containing disinfection byproducts from extracellular polymers under the catalysis of copper pipe corrosion products CCPs(Copper corrosion products) significantly promoted DBPs generation, especially N−DBPs. At the same time, the catalytic promotion effect of Cu is better than that of CuO. pH has an important influence on the catalytic promotion effect of CCPs on C−DBPs and N−DBPs, and CCPs has better promotion effect under alkaline condition.
Chapter 4 is the study on the transformation of extracellular polymers to iodinated disinfection byproducts under the oxidation of lead dioxide and manganese dioxide. Compared with HA, I-DBPs of EPS showed stronger chronic cytotoxicity due to the higher generation potential of N-IDBPs. PbO dose and I concentration also had important effects on the generation of IDBPs. The proteins showed higher potentials for both C- and N-IDBPs than polysaccharides due to more electrophilic sites and higher N content.
Chapter 5 is conclusion and outlooks.