Disinfection of swine wastewater using chlorine, ultraviolet light and ozone

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境水质学国家重点实验室

	Disinfection of swine wastewater using chlorine, ultraviolet light and ozone
	Macauley, JJ; Qiang, ZM; Adams, CD; Surampalli, R; Mormile, MR
刊名	WATER RESEARCH
	2006
卷号	40 期号:10 页码:2017-2026
关键词	disinfection antibiotic resistance swine wastewater chlorine ultraviolet light ozone
英文摘要	Veterinary antibiotics are widely used at concentrated animal feeding operations (CAFOs) to prevent disease and promote growth of livestock. However, the majority of antibiotics are excreted from animals in urine, feces, and manure. Consequently, the lagoons used to store these wastes can act as reservoirs of antibiotics and antibiotic-resistant bacteria. There is currently no regulation or control of these systems to prevent the spread of these bacteria and their genes for antibiotic resistance into other environments. This study was conducted to determine the disinfection potential of chlorine, ultraviolet light and ozone against swine lagoon bacteria. Results indicate that a chlorine dose of 30mg/L could achieve a 2.2-3.4 log bacteria reduction in lagoon samples. However, increasing the dose of chlorine did not significantly enhance the disinfection activity due to the presence of chlorine-resistant bacteria. The chlorine resistant bacteria were identified to be closely related to Bacillus subtilis and Bacillus licheniformis. A significant percentage of lagoon bacteria were not susceptible to the four selected antibiotics: chlortetracycline, lincomycin, sulfamethazine and tetracycline (TET). However, the presence of both chlorine and TET could inactivate all bacteria in one lagoon sample. The disinfection potential of UV irradiation and ozone was also examined. Ultraviolet light was an effective bacterial disinfectant, but was unlikely to be economically viable due to its high energy requirements. At an ozone dose of 100mg/L, the bacteria inactivation efficiency could reach 3.3-3.9 log. (c) 2006 Elsevier Ltd. All rights reserved.
WOS记录号	WOS:000238177700011
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/22981]
专题	生态环境研究中心_环境水质学国家重点实验室
推荐引用方式 GB/T 7714	Macauley, JJ,Qiang, ZM,Adams, CD,et al. Disinfection of swine wastewater using chlorine, ultraviolet light and ozone[J]. WATER RESEARCH,2006,40(10):2017-2026.
APA	Macauley, JJ,Qiang, ZM,Adams, CD,Surampalli, R,&Mormile, MR.(2006).Disinfection of swine wastewater using chlorine, ultraviolet light and ozone.WATER RESEARCH,40(10),2017-2026.
MLA	Macauley, JJ,et al."Disinfection of swine wastewater using chlorine, ultraviolet light and ozone".WATER RESEARCH 40.10(2006):2017-2026.