Characterization of wastewater from hog slaughterhouses in Eastern Canada and evaluation of their in-plant wastewater treatment systems
Characterization of wastewater from hog slaughterhouses in Eastern Canada and evaluation of their in-plant wastewater treatment systems
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加拿大东部生猪屠宰场废水的特征及其厂内废水处理系统的评估
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发表时间：
2014
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L.
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作者：
L.
马斯DJ和Masse，L. 2000.加拿大东部生猪屠宰场废水的特征及其厂内废水处理系统的评价。可以的.《农业工程》42：139-146。现有的屠宰场废水处理系统的文献进行了审查和讨论，在加拿大的条件下的技术实用性和相关性。来自魁北克和安大略的六个生猪屠宰场的废水也在工厂处理前后进行了表征。在原废水中，总化学需氧量（TCOD）范围为2333至8627毫克/升，悬浮固体（SS）范围为736至2099毫克/升。屠宰场废水的组成在有机强度、无机元素、碱度和pH值方面足以进行生物处理。两个屠宰场在将废水排放到市政下水道之前只处理了废水。三家工厂使用初级处理来沉淀血液和去除漂浮的脂肪，而一家工厂使用好氧滴滤器进一步处理其废水。虽然屠宰场的初步处理降低了污染物的水平，但TCOD和SS浓度仍然太高，不需要征收市政附加费。此外，所有处理方法都会产生大量腐烂和体积庞大的污泥，需要特殊处理和/或进一步处理。
Masse, DJ. and Masse, L. 2000. Characterization of wastewater from hog slaughterhouses in Eastern Canada and evaluation of their in-plant wastewater treatment systems. Can. Agric. Eng. 42: 139-146. Literature on existing systems for slaughterhouse wastewater treatment was reviewed and discussed in terms of technology usefulness and relevance under Canadian conditions. The wastewater from six hog slaughterhouses in Quebec and Ontario was also characterised before and after treatment at the plant. In raw wastewater, total chemical oxygen demand (TCOD) ranged from 2333 to 8627 mgIL and suspended solids (SS) varied between 736 and 2099 mg/L. Slaughterhouse wastewater composition in terms of organic strength, inorganic elements, alkalinity, and pH is adequate for biological treatment. Two slaughterhouses only settled their wastewater before discharging it to the municipal sewer. Three plants used primary treatment to precipitate blood and remove floating fat, while one further treated its wastewater using an aerobic trickling filter. Although preliminary treatment at the slaughterhouse reduced the level of pollutants, TCOD and SS concentrations were still too high for sewer discharge without being imposed a municipal surcharge. In addition, all treatments produced large amounts of putrefactive and bulky sludge, which required special handling and/or further treatment.