| 微酸性电解水雾滴沉积量及粒径对畜牧环境杀菌效果的影响 |
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| 引用本文： | 臧一天,李保明,郑炜超,盛孝维,吴红翔,舒邓群.微酸性电解水雾滴沉积量及粒径对畜牧环境杀菌效果的影响[J].农业工程学报,2017,33(9):224-229. |
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| 作者姓名： | 臧一天 李保明 郑炜超 盛孝维 吴红翔 舒邓群 |
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| 作者单位： | 1. 江西农业大学动物科技学院,南昌,330045;2. 中国农业大学农业部农业结构与环境工程重点实验室,北京,100083 |
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| 基金项目： | 现代农用工业技术研究专项基金(CARS-41)；南方地区草食家畜舍饲小气候调控技术研究（201303145） |
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| 摘 要： | 微酸性电解水为畜牧业初步应用的环保消毒剂,为精确喷雾以减少残留,先利用称重法测量它在不同孔径及压力下的雾滴沉积量,研究该沉积量对杀菌效果影响,确定对衣物表面消毒最佳单位沉积量。随后对比不同雾滴粒径对衣物表面细菌的杀灭效果,以确定喷雾消毒方式。结果表明,不同压强及喷头下,雾滴沉积量具显著性差异(P0.05)。且呈中间密集、两端稀疏特征;随压强及孔径增大,两端呈先升后降趋势。微酸性电解水(pH值6.15~6.35,有效氯浓度135 mg/L)对衣物表面消毒最佳沉积量为1.49×10~(-2)g/cm~2。大雾滴(80~90μm)杀菌率在同时间下显著高于小雾滴(P0.05),但其空间分布均匀性显著(P0.05)低于小雾滴(≤30μm)。雾滴粒径及沉积量对微酸性电解水杀菌效果具显著影响(P0.05)。
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| 关 键 词： | 喷雾 消毒 沉积量 微酸性电解水 雾滴粒径 |
| 收稿时间： | 2016/9/21 0:00:00 |
| 修稿时间： | 2017/5/5 0:00:00 |
Influence of droplet size and deposition on slightly acidic electrolyzed water spraying disinfection effect on livestock environment |
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| Zang Yitian,Li Baoming,Zheng Weichao,Sheng Xiaowei,Wu Hongxiang and Shu Dengqun.Influence of droplet size and deposition on slightly acidic electrolyzed water spraying disinfection effect on livestock environment[J].Transactions of the Chinese Society of Agricultural Engineering,2017,33(9):224-229. |
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| Authors: | Zang Yitian Li Baoming Zheng Weichao Sheng Xiaowei Wu Hongxiang and Shu Dengqun |
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| Institution: | 1. College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330000, China;,2. Key Laboratory of Structure and Environment in Agricultural Engineering, Ministry of Agriculture, China Agricultural University, Beijing 100083, China;,2. Key Laboratory of Structure and Environment in Agricultural Engineering, Ministry of Agriculture, China Agricultural University, Beijing 100083, China;,1. College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330000, China;,1. College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330000, China; and 1. College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330000, China; |
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| Abstract: | As the increasing demand for efficient and sustainable production and the global demand for reduced antimicrobial drug consumption in livestock production, the importance of disinfection has increased significantly. However, potentially toxic, corrosive problems have arisen because of the use of chemicals as disinfecting agents. Slightly acidic electrolyzed water (SAEW) which has recently been developed in livestock production is a new environmental friendly disinfectant. In order to make the precision spraying of this disinfectant and increase the disinfectant usage efficiency for reducing residual and disease risk, in this study, the influence of droplets size and deposition on disinfection effect of slightly acidic electrolyzed water was evaluated. Deposition delivered by different atomizers on three aperture types (0.1, 0.3 and 0.5 mm) of sprayer under three levels pressure (30, 50 and 80 MPa), were first measured at 1 minute using a weighing method. The depositions were then divided into different levels with its correspondence pressure and aperture, and the trend influence of disinfection effectiveness of slightly acidic electrolyzed water (SAEW, pH value 6.15-6.35, ACC 135 mg/L), for inactivatingSalmonella enteritidis on the surface of clothes, was evaluated at different levels of deposition. In addition, the effect of droplet size on SAEW sprayed disinfection effect was measured with two sprayers, nebulizer (size 80-90μm) and ultrasonic nebulizer (size≤30μm) at different point-central district (A0) and another two different-distance points in the left and right hand (A1, A2). The results showed that deposition constitutes a dense neighborhood at central district (A0), more segmental in another two different-distance points (A1, A2) under the different pressure and aperture types. The deposition amount at the A0 was more than A1 and A2. In addition, the deposition amount at A1 and A2 first increased and then decreased as the pressure and aperture increased. The coefficient of variation from the different points was observed at the same change trend with A1 and A2. The results showed that the deposition significantly affects the log reduction (P<0.05), and the logarithm of reduction of Salmonella was rapidly increased from (1.22±0.02)to (2.09±0.01)lg(CFU/mL), and then change little with the increased deposition. The maximum logarithm of reduction ofSalmonella of 2.09±0.01 was finally obtained by the clothes sprayed with SAEW at 1.49×10-2deposition, and the deposition of 1.49×10-2 g/cm2 may be the best point of deposition for SAEW sprayed disinfection on the surface of clothes. There was a significant difference in the size of droplet on SAEW spraying disinfection effect (P<0.05). It was concluded that the bactericidal effects of the droplet from the nebulizer (size 80-90μm) at the central target region, was significant higher than the ultrasonic nebulizer (Size≤30 μm) (P<0.05), but the effects of the nebulizers was significant difference at the different locations (P<0.05), and no significant difference (P>0.05) in the bactericidal effects of the ultrasonic nebulizer was observed among different locations. It means the smaller droplet size (size≤30μm) had a better uniformity than the larger size droplet (size 80-90μm) |
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| Keywords: | spraying disinfection deposition slightly acidic electrolyzed water droplet size |
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