微酸性电解水对污染轮胎表面的模拟消毒优化

为降低鸡场肠病原体疫病传播风险和兽药残留,通过响应面中和设计法,该试验评估了微酸性电解水（p H值5.85~6.53）对大肠杆菌和沙门氏菌混合污染轮胎的消毒效果,并探讨了清洗时间,消毒时间及有效氯浓度3个因素对微酸性电解水消毒效果的影响及相互作用规律,同时建立二次多项回归模型,并对消毒工艺进行优化。结果表明,3个因素皆对消毒效果有显著影响（p〈0.0001）,且各因素影响大小为有效氯浓度〉消毒时间〉清洗时间;模型决定系数和调整决定系数分别为0.984和0.969,验证试验中,试验值与预测值的相关系数为0.97;消毒时间5 min、清洗时间4 min、有效氯浓度140 mg/L时,可以达到1.3...

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Bibliographic Details
Published in农业工程学报 Vol. 31; no. 20; pp. 199 - 204
Main Author 臧一天 李星烁 李保明 曹薇
Format Journal Article
LanguageChinese
Published 中国农业大学水利与土木工程学院,农业部农业结构与环境工程重点实验室,北京 100083 2015
Subjects
优化
响应面
模型
消毒
电解水
轮胎
鸡场
models
disinfection
模型
消毒
鸡场
response surface methodology
电解水
electrolyzed water
轮胎
响应面
optimization
优化
poultry farm
tires
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Summary:为降低鸡场肠病原体疫病传播风险和兽药残留,通过响应面中和设计法,该试验评估了微酸性电解水（p H值5.85~6.53）对大肠杆菌和沙门氏菌混合污染轮胎的消毒效果,并探讨了清洗时间,消毒时间及有效氯浓度3个因素对微酸性电解水消毒效果的影响及相互作用规律,同时建立二次多项回归模型,并对消毒工艺进行优化。结果表明,3个因素皆对消毒效果有显著影响（p〈0.0001）,且各因素影响大小为有效氯浓度〉消毒时间〉清洗时间;模型决定系数和调整决定系数分别为0.984和0.969,验证试验中,试验值与预测值的相关系数为0.97;消毒时间5 min、清洗时间4 min、有效氯浓度140 mg/L时,可以达到1.38 log10 cfu/cm2的杀菌数。该研究为微酸性电解水消毒提供了参考,并证明了微酸性电解水在畜牧业的应用潜力。
Bibliography:11-2047/S
The process of transport has long been considered an important risk factor for pathogens entry into farms. Disinfection is a generally agreed concept to prevent the introduction of both endemic and epidemic infections, however, potentially toxic, corrosive or volatile problems have arisen because of the use of chemicals as disinfecting agents. Slightly acidic electrolyzed water （SAEW） is considered environmental friendly as it is generated from water and dilute salt solution and reverts to water after use. Also, it has the advantages of possessing broad-spectrum antimicrobial activity, reducing corrosion of surface and minimizing the potential of damage to human health. To reduce the risk of enteric pathogens transmission and leave little residue in animal farms, the disinfection effectiveness of SAEW with pH value of 5.85-6.53 for inactivating Escherichia coli （E. coli） and Salmonella enteritidis （S. enteritidis） mixture on the surface of vehicle tires was evaluated. The coupled effects of tap water
ISSN:1002-6819
DOI:10.11975/j.issn.1002-6819.2015.20.028