Ozonation of biologically-treated municipal solid waste leachate using an integrated process of O3/Ca(OH)2 and microbubble reactor

被引：8

作者：

Cheng, Chen ^{[1
]}

Huang, Xiaoxue ^{[1
]}

Cheng, Wen ^{[1
]}

Quan, Xuejun ^{[1
]}

Cheng, Zhiliang ^{[1
]}

Jiang, Li ^{[2
]}

Yang, Lu ^{[3
]}

机构：

[1] Chongqing Univ Technol, Coll Chem & Chem Engn, Chongqing 400054, Peoples R China

[2] Chongqing Coll Elect Engn, Chongqing, Peoples R China

[3] Chongqing Municipal Solid Waste Resource Utilizat, Chongqing, Peoples R China

来源：

ENVIRONMENTAL TECHNOLOGY | 2021年 / 42卷 / 15期

基金：

美国国家科学基金会;

关键词：

Biologically-treated leachate; O-3; Ca(OH)(2) system; ozonation; OXIDATION PROCESSES O-3; LANDFILL LEACHATE; CATALYTIC OZONATION; ACTIVATED CARBON; COAGULATION-FLOCCULATION; WATER; REMOVAL; OPTIMIZATION; EFFICIENCY; SYSTEM;

D O I：

10.1080/09593330.2019.1703143

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The ozonation process was limited by the relatively low solubility in liquid and low transfer mass efficiency. In this work, O-3/Ca(OH)(2) was adopted to treat biologically-treated municipal solid waste (MSW) leachate in a microbubble gas-liquid reactor. The residual COD concentration is meeting the discharge standard after treatment. The effects of operating parameters such as Ca(OH)(2) dosage, external reactor pressure, liquid temperature, inlet ozone concentration and ozone flow rate on COD removal and mineralization (TOC removal) were studied systematically. This process was able to remove 89.86% of COD, 65.35% of TOC and 92.12% of UV-254 under the optimal conditions. And the intensification mechanism of O-3/Ca(OH)(2) system was explored through analysing the change of UV-254, 3D-EEM and the organic matters present in the leachate.

引用

页码：2402 / 2412

页数：11

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