Modeled effectiveness of ventilation with contaminant control devices on indoor air quality in a swine farrowing facility.
Modeled effectiveness of ventilation with contaminant control devices on indoor air quality in a swine farrowing facility.
复制标题
模拟污染物控制装置通风对猪产仔设施室内空气质量的有效性。
DOI：
10.1080/15459624.2013.875186
复制
发表时间：
2014
影响因子：
2
通讯作者：
Peters,ThomasM
中科院分区：
文献类型：
--
作者：
Anthony,TRenée;Altmaier,Ralph;Park,JaeHong;Peters,ThomasM
由于养猪场工人在集中动物饲养操作（CAFO）中经历的不良健康影响与暴露于粉尘和气体有关，因此有必要努力减少暴露，特别是在冬季，由于通风减少，暴露增加。模拟的空气质量和运行成本通风猪CAFO，包括处理和再循环空气通过一个分娩室，进行了90天的冬季使用质量和能量平衡方程。系统运行需要控制加热器运行，以达到最佳室温，以确保动物健康（20至22.5°C）。五个空气污染控制装置，四个房间的通风率，和五个再循环模式进行了检查。使用标准的工业空气污染控制装置，包括旋风分离器、过滤器和静电除尘器，可以很容易地降低可吸入粉尘浓度。0.94 m3s−1时运行通风系统（2000 cfm），通过旋风除尘器、静电除尘器和振动除尘器过滤系统的75%至100%的处理空气再循环，实现了充分的颗粒控制，每只猪的运营成本低于1.00美元（0.22至0.54美元），尽管使用室内通风燃气加热器时二氧化碳（CO2）浓度接近2000 ppm。在任何模拟中，CO2浓度都低于行业推荐浓度（1540 ppm），但替代加热设备可以将CO2降低到可接受的浓度。虽然这项调查并不代表所有的生产猪产仔舍，不同的特点，包括房间尺寸和猪的占用，模拟模型和通风优化方法可以应用到其他生产现场。这项工作表明，通风可能是养猪业减少暴露的一种具有成本效益的控制选择。[可提供本条的补充材料。请访问出版商在线版的《职业与环境卫生杂志》，获取以下免费补充资源：详细的模拟结果，包括本研究中进行的所有模拟的房间浓度和操作成本。
Because adverse health effects experienced by swine farm workers in concentrated animal feeding operations (CAFOs) have been associated with exposure to dust and gases, efforts to reduce exposures are warranted, particularly in winter seasons when exposures increase due to decreased ventilation. Simulation of air quality and operating costs for ventilating swine CAFO, including treating and recirculating air through a farrowing room, was performed using mass and energy balance equations over a 90-day winter season. System operation required controlling heater operation to achieve room temperatures optimal to ensure animal health (20 to 22.5°C). Five air pollution control devices, four room ventilation rates, and five recirculation patterns were examined. Inhalable dust concentrations were easily reduced using standard industrial air pollution control devices, including a cyclone, filtration, and electrostatic precipitator. Operating ventilation systems at 0.94 m3s−1(2000 cfm) with 75 to 100% recirculation of treated air from cyclone, electrostatic precipitator, and shaker dust filtration system achieves adequate particle control with operating costs under $1.00 per pig produced ($0.22 to 0.54), although carbon dioxide (CO2) concentrations approach 2000 ppm using in-room ventilated gas fired heaters. In no simulation were CO2concentrations below industry recommended concentrations (1540 ppm), but alternative heating devices could reduce CO2to acceptable concentrations. While this investigation does not represent all production swine farrowing barns, which differ in characteristics including room dimensions and swine occupancy, the simulation model and ventilation optimization methods can be applied to other production sites. This work shows that ventilation may be a cost-effective control option in the swine industry to reduce exposures.[Supplementary materials are available for this article. Go to the publisher's online edition of Journal of Occupational and Environmental Hygiene for the following free supplemental resource: detailed simulation results, including room concentration and operation cost for all simulations performed in this study.]