Research On Flocculation Characteristic Of Compounded Bioflocculant

Recently, Bioflocculant(BF) has fully received researches'attention in the world for its high efficient and nontoxic performances. The introduction of Compound Bioflocculant (CBF) is a milestone in the area of BF. Based on a lots reference of this field, it is found that the study of CBF only rests on the regular flocculation characteristic, like activity distribution, component analysis and thermal stability, et al. the research emphasis of CBF is only put its development, so it is necessary to develop systemic research on flocculation characteristic of compound floccule which is combined by CBF and chemical floccule flocculation.Firstly, the structure, flocculation stability and mechanism of CBF were investigated in this subject; secondly, compounds which were combined by CBF and AlCl₃, FeCl₃, respectively were prepared, then flocculation stability, cast quantity and optimal proportion of compound were studied; lastly, prepared compounds combined by CBF and FeCl₃ were used to supply water treatment and investigation of flocculation hydraulic conditions and cast quantity were performed to measure its treatment effect.analyzed shape soft of floccule was developed and its flocculation modality was probed to further describe flocculation process and forecast results in this subject.There appeared slight flocculation instability in water treatment with different zymolysis batches of CBF through a lot of experiments. Results showed that when the combination proportion of CBF to AlCl₃ was 5:1 and to FeCl₃ was 20:1, the effect of the treatment and stability of compounds were optimal, whatever high feculent or low feculent water. The optimal hydraulic conditions were as following: quickly mixing speed was 175r/min and time was 60s; slowly mixing speed was 60r/min and time was 180s in confecting kaoline water, using compound which was combined by CBF and FeCl₃. The best cast to feculent water (100NTU) was 5.25ml/L, 6.3 ml/L to 200NTU, 7.35ml/L to 300NTU, 8.4ml/L to 400NTU and 9.45ml/L to 500NTU using this compound in disposal different feculent water.Analysis of flocculant structure showed that whole change zone was in the...