Effects of aeration on gamma irradiation of sewage sludge

被引：15
|
作者：
Chu, Libing [1 ]
Wang, Jianlong [1 ]
Wang, Bo [1 ]
机构：
[1] Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China
来源：
RADIATION PHYSICS AND CHEMISTRY | 2010年 / 79卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Inorganic nitrogen compounds; Radiation; Sewage sludge; Wastewater treatment; RADIATION; DECOMPOSITION; WATER;
D O I：
10.1016/j.radphyschem.2010.03.007
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this paper the effect of aeration on gamma irradiation of sewage sludge was investigated to examine the potential solubilization of solids in sewage sludge to ultimately reduce the solids volume for disposal. Results showed that aeration increased the effectiveness of gamma radiation. The efficiency of sludge solubilization with aeration was increased by around 25% compared to that without aeration at an irradiation dose of 2.5-9 kGy. The soluble protein, polysaccharide and humic (like) substance concentrations were higher under aerated conditions. With aeration the overall reaction appears to be oxidative as evidenced by the higher nitrate and nitrite ion concentrations in solution. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：912 / 914
页数：3
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