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首页> 外文期刊>Water Science and Technology >Characterization of the activated sludge and of the operating conditions of six SBR treating dairy effluent and operated at industrial scale
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Characterization of the activated sludge and of the operating conditions of six SBR treating dairy effluent and operated at industrial scale

机译：活性污泥的表征以及六种SBR处理乳制品废水并在工业规模上运行的操作条件

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摘要

The sludge from six SBRs treating dairy effluent and located at same geographical location, in North East of France, were collected to study their characteristic behavior. The six plants were designed and constructed by the same manufacturer and are working under quite similar operating conditions. The objective of the study was to observe if any similarity existed in the characteristics of the sludge collected from the SBRs. The sludge was characterized for morphological properties (filament index, floc size), settling, compressibility, suspended solids (SS) concentration. The sludge from each plant was different from the others in most of the characteristics. One sludge out of six (sludge G) was completely different from the others with a very degraded structure and low discrete settling and compression. This reactor was not working fully satisfactorily with a too high COD at outlet, probably because this SBR was undergoing repetitive overloading linked to a very bad recovery of the whey by the cheese maker. The five other SBRs were working fully satisfactorily but the characteristics of the five sludges were quite different from one sludge to another. The size of the flocs seemed to be the only parameter measured which could be correlated to the settling characteristics of the sludge. The sludge characteristics and the parameter correlations were also compared with that of municipal activated sludge and were found to be very different.
机译：收集了六个位于法国东北部相同地理位置的SBR处理污泥的污泥，以研究其特征性行为。这六个工厂是由同一家制造商设计和建造的，并且在相当相似的工作条件下工作。该研究的目的是观察从SBR收集的污泥的特性是否存在任何相似性。对污泥的形态特性（细丝指数，絮状物尺寸），沉降，可压缩性，悬浮固体（SS）浓度进行表征。每个工厂的污泥在大多数特征上都与其他工厂不同。六种污泥中的一种（污泥G）与其他污泥完全不同，其结构非常退化，沉降和压缩离散度低。由于出口处的COD太高，该反应器无法充分令人满意地工作，这可能是因为该SBR经历了反复的过载，这与奶酪制造商非常不好的乳清回收率有关。其他五种SBR的性能令人满意，但是五种污泥的特性在一种污泥和另一种污泥之间是完全不同的。絮凝物的大小似乎是唯一可以与污泥的沉降特性相关的参数。污泥特性和参数相关性也与市政活性污泥进行了比较，发现有很大的不同。

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