Controlling odors from sewage sludge using ultrasound coupled with Fenton oxidation
作者： Nuo Liu , Changxiu Gong , Jianguo Jiang , Feng Yan , Sicong Tian
DOI: 10.1016/J.JENVMAN.2016.05.005
关键词: Odor 、 Sewage 、 Nuclear chemistry 、 Sulfate 、 Environmental chemistry 、 Sulfide 、 Sludge 、 Biofilter 、 Anaerobic digestion 、 Chemistry 、 Water treatment
摘要: We examined the effects of ultrasound (U), Fenton oxidation (F), and coupled with (U + F) pre-treatments (prior to anaerobic digestion) on elimination odorous compounds. The results demonstrated that U promoted odor release, while treatment F alone decreased release. After 20-min treatments, concentration dissolved sulfide (S(2-)) under U + F declined from 17.4 mg/L 8.1 mg/L, decreasing by more than 50% 34%, respectively, for alone. In addition, sulfate (SO4(2-)) couple significantly increased in sewage sludge 200 mg/L 390.6 mg/L, up 95.3% compared 5% This illustrates process S(2-) SO4(2-). Throughout experimentation, SO4(2-) was odorless stable, highlighting mechanism control. Thus, combining into a single proved be better alternative pretreatment controlling can effectively decrease potential
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