ZHANGKai,WANGYi,ZHANGQian,et al.Effect of Micro?nano Aeration on Reduction and Aerosol Generation of Sediment in the Black?odorous Water[J].China Water & Wastewater,2024,40(11):19-23.
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Effect of Micro?nano Aeration on Reduction and Aerosol Generation of Sediment in the Black?odorous Water

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第40卷 Number: 第11期 Page: 19-23 Column: Date of publication: 2024-06-01
Author(s):
ZHANG　Kai1; 2;  WANG　Yi1; 2;  ZHANG　Qian1; 2;  ZHAO　Hui-ying1; 2;  ZHAO　Zi-yi1; 2;  CUI　Hai-hang3
（1. School of Environmental and Municipal Engineering， Xi’an University of Architecture and Technology， Xi’an 710055， China； 2. Northwest China Key Laboratory of Water Resource and Environment Ecology， Xi’an University of Architecture and Technology， Xi’an 710055， China； 3. School of Building Services Science and Engineering， Xi’an University of Architecture and Technology， Xi’an 710055， China）
Keywords:
micro-nano aeration;  black-odorous water;  sediment reduction;  aerosol
Abstract:
Micro-nano aeration is one of the main methods to control black-odorous water bodies, but there are limited studies on the effects of aeration on sediment reduction and aerosol generation. In this study, the effects of micro-nano aeration on sediment reduction and aerosol generation in black- odorous water were investigated by comparing ordinary aeration and micro-nano aeration. The results showed that the organic acid groups and soluble metabolite groups in the sediment became the main components of fluorescent organic matter in the pore water after micro-nano aeration treatment, and the median particle size of the sediment was reduced, which was conducive to the subsequent reduction treatment. Micro-nano aeration had the best effect on the removal of volatile solids (VS) and total solids (TS) in the sediment. The removal rate of VS and TS was 38.88% and 27.72% respectively, which could realize the in-situ reduction of sediment. In addition, the PM2.5 mass concentration and carbon aerosol concentration of micro-nano aeration group were lower than those of ordinary aeration group. Therefore, micro-nano aeration has the potential to improve the sediment reduction efficiency and effectively control the aerosol generation in the treatment of black-odorous water.
Last Update: 2024-06-01