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    The results of the experiment on the flocculating characteristic of the bioflocculant produced by strain Aeromonas sp. N11 showed that the flocculating activity of the bioflocculant was due to the secondary metabolic product of N11. The bioflocculant was present in the fermentation liquid mainly and had a high thermostability.
    对Aeromonas sp.N11所产絮凝剂的絮凝特性实验发现,N11絮凝活性由菌细胞生长后期的次生代谢产物产生,絮凝物质主要存在于发酵液中。
    The best dosage of the bioflocculant and the coagulant aids was different for different substances to be flocculated.
    对不同的被絮凝物质絮凝剂和助凝剂具有不同的最佳投加量。
    The optimum pH had reference to the coagulant aids and the substances to be flocculated.
    该絮凝剂的最适pH值跟助凝剂的种类和被絮凝物质有关。
    there were sugar contained inthe microbes, as the flocculating ability were not decreased and increased on the contraryafter treatment with high temperature.
    高温处理发现菌株的絮凝性能并没有减弱,反而加强,这说明这些絮凝菌株中含有糖类絮凝物质
    The highest level of flocculating substance accumulation (0. 5-0. 9g/L) were attained after 65h cultivation at 30℃ with initial medium pH 7.5-8. 5 and proper aeration. These bioflocculants were purified by ethanol precipitation, gel chromatography and dialysis.
    四株菌在生长过程中均可产生胞外絮凝物质,在最适培养条件下絮凝剂产量为0.5—0.9g/L。
    The main results are presented as follows: Different canions have different effects on the flocculating activity of silicate bacterial GY03.The strain can form microbial flocculant after 5 days' culture in silicate bacterial medium, which can promote flocculation ability and reduce suspending solid pellets used in wastewater treatment.
    GY03菌株所产絮凝物质有88%以上分布在细胞表面,该絮凝剂的絮凝活性随菌体生长量的增加而同步增高,不同金属离子对GY03菌株絮凝活性有影响。
    The flocculant produced by 415 strain has high flocculation efficiency in acidic condition. The strain of YZ-4 has high flocculation efficiency in the condition of relatively large pH value and show good application prospect.
    415菌株产生的絮凝物质在偏酸性环境下具有较高的絮凝活性,而YZ-4菌株却在较大的pH范围内均具有高的絮凝活性,显示出良好的应用前景。
    The mechanism of biology flocculent, the factors which could affect the ability of biology flocculent and the matter which could be flocculated were introduced in this paper.
    本文首先对生物絮凝剂的絮凝机理,影响生物絮凝剂絮凝能力的因素以及可被生物絮凝剂絮凝的物质进行了介绍;
 

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