COMPOSITIONAL STRUCTRE CHANGES AND CHARACTERISTICS OF DISSOLVED ORGANIC MATTERS DURING ARTIFICIAL GROUNDWATER RECHARGE WITH RECLAIMED WATER

GUO Tian-tian; ZHANG Han; AN Wen-gang; DUAN Yu-tong; FAN Wei; HUO Ming-xin

doi:10.13205/j.hjgc.202006020

Volume 38 Issue 6

Aug. 2020

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2020 > 38(6): 126-131,107

GUO Tian-tian, ZHANG Han, AN Wen-gang, DUAN Yu-tong, FAN Wei, HUO Ming-xin. COMPOSITIONAL STRUCTRE CHANGES AND CHARACTERISTICS OF DISSOLVED ORGANIC MATTERS DURING ARTIFICIAL GROUNDWATER RECHARGE WITH RECLAIMED WATER[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(6): 126-131,107. doi: 10.13205/j.hjgc.202006020

Citation:

GUO Tian-tian, ZHANG Han, AN Wen-gang, DUAN Yu-tong, FAN Wei, HUO Ming-xin. COMPOSITIONAL STRUCTRE CHANGES AND CHARACTERISTICS OF DISSOLVED ORGANIC MATTERS DURING ARTIFICIAL GROUNDWATER RECHARGE WITH RECLAIMED WATER[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(6): 126-131,107. doi: 10.13205/j.hjgc.202006020

Citation:

GUO Tian-tian, ZHANG Han, AN Wen-gang, DUAN Yu-tong, FAN Wei, HUO Ming-xin. COMPOSITIONAL STRUCTRE CHANGES AND CHARACTERISTICS OF DISSOLVED ORGANIC MATTERS DURING ARTIFICIAL GROUNDWATER RECHARGE WITH RECLAIMED WATER[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(6): 126-131,107. doi: 10.13205/j.hjgc.202006020

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COMPOSITIONAL STRUCTRE CHANGES AND CHARACTERISTICS OF DISSOLVED ORGANIC MATTERS DURING ARTIFICIAL GROUNDWATER RECHARGE WITH RECLAIMED WATER

doi: 10.13205/j.hjgc.202006020

School of Environment, Northeast Normal University, Changchun 130117, China

Received Date: 2019-05-20

Abstract

Abstract

This study carried out a laboratory column experiment to simulate the infiltration process, analyzed the variation of total dissolved organic matter (DOM) content and structural composition, and extracted the main organic components with the recommended method by IHSS for analysis and characterization. The results showed that after infiltration, the COD concentration in reclaimed water decreased from 57.90 mg/L (0 h) to 21.50 mg/L (159 h), and the removal efficiency reached 63%. Accordingly, the DOC concentration decreased from 12.40 mg/L to 7.16 mg/L, and the removal rate was 42%. Fluorescene regional integration results showed that aromatic protein-like substances and SMP-like substances were main components of DOM in reclaimed water; DOM in soil was mainly composed of humic acid (HA). Affected by the DOM leaching release in soil, the DOM of leachate from the experiment was mainly composed of HA (the proportion was more than 60%). The results of SEM and EDS analysis showed that the surface of HA was spongy, mainly composed of C (64.40%) and O (34.25%) elements. FTIR spectrum revealed that HA contained various functional groups such as hydroxyl and carboxyl groups. UV-Vis spectrum was monotonous and showed no characteristic. The ratios between characteristic peaks showed that the HA belonged to the macromolecular category.
- reclaimed water,
- groundwater recharge,
- dissolved organic matter,
- fluorescence region integral,
- humic acid

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