Janczukowicz W, Zieliński M, Debowski M
Department of Environmental Protection Engineering, Faculty of Environmental Sciences and Fisheries, University of Warmia and Mazury in Olsztyn, 10-957 Olsztyn, Prawocheńskiego St. 1, Poland.
Bioresour Technol. 2008 Jul;99(10):4199-205. doi: 10.1016/j.biortech.2007.08.077. Epub 2007 Oct 31.
Main goal of the study was present the results of some respirometric measurements of activated sludge biodegrading the substrate in the wastewater originated in selected sections of the dairy processing line. The following dairy production effluents were analyzed in the research: the pumping station wastewater (combined wastewater from all the sections of the dairy factory), the apparatus room wastewater, the butter section wastewater, the milk reception point wastewater, the cheese section wastewater and the cottage cheese section wastewater. Apart from that, sweet and sour whey, which are secondary products of hard cheese and cottage cheese production, respectively, was the subject of the research. The amount of organic matter being oxidized during a 5-day measurement session was calculated on 1g of the activated sludge biomass. The research was conducted at the temperature of 20 degrees C and 35 degrees C at the applied sludge loading rate of A'=0.2 g BOD g(-1) dry mass d(-1), which ensured complete biodegradation. The results indicated a correlation between a technological process of dairy processing, an ultimate outcome of which was the wastewater analyzed, and dairy wastewater biodegradability. The results confirmed that all dairy processing effluents can be treated together, with the exception of whey, whose complex biodegradation demands may cause too much burden to any wastewater treatment technological system and thus should be managed within a separate installation.
本研究的主要目标是展示活性污泥对乳制品加工生产线特定工段产生的废水中底物进行生物降解的一些呼吸测量结果。本研究分析了以下乳制品生产废水：泵站废水（乳制品厂所有工段的混合废水）、机房废水、黄油工段废水、牛奶接收点废水、奶酪工段废水和农家干酪工段废水。除此之外，分别作为硬奶酪和农家干酪生产副产品的甜乳清和酸乳清也在研究范围内。在为期5天的测量期间，计算每1克活性污泥生物质氧化的有机物量。研究在20℃和35℃的温度下进行，采用的污泥负荷率为A'=0.2 g BOD g(-1)干质量d(-1)，以确保完全生物降解。结果表明，乳制品加工工艺流程（其最终产物为所分析的废水）与乳制品废水生物降解性之间存在相关性。结果证实，除乳清外，所有乳制品加工废水都可以一起处理，乳清复杂的生物降解需求可能会给任何废水处理技术系统带来过大负担，因此应在单独的设施中进行处理。
