The flocculation has a very important role in water treatment process,and the extent of perfect of flocculation process directly affect the treatment effect of the following treatment. Traditional flocculation theory was based on the hypothesis that colloid was spherical in water, but in fact the characteristic of shape of colloid and Floc. in water has a great influence on the flocculation effect.

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Firstly, according to the mechanism and kinetics model of coagulation, the process of coagulation dynamics of folded plate flocculator is analyzed and flow pattern has an important impact on flocculation effect too.

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Results show that floes' VC and D at the surface water were closely related to current velocity; and the peaks of VC lag those of the current velocity. The lag variation during ebb and flood tides is 10-30min and 30-50 min, respectively. Current velocity at 50 cm/s is a turning point of D vs. vertical average current velocity, before the point, Dm increases with current velocity, and decreases after the point. Similarly, VC at 75μl/L becomes a critical point in the surface water, below the point, D increases with VC, and above the point, D stabilizes.Δp is D dependent, larger floes have much lower Δp than smaller floes. Both D and Δp of floes affect ω. In the surface water during spring tide and neap tide, a power exponent relationship exists between Δp and D, and ω and D.

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Complex flocculant PASS has the abilities of neutralizing electric charge and flocculating. The experimental results show: it is feasible that the emulsion wastewater can be treated into qualified discharging water. The dosage of flocculants and pH value have been optimized by coagulation experiments. In addition the mechanism for emulsion wastewater has been studied by using Perron timed complex colorimetric method and neutralization method. Aiming at characteristics of high concentration and high CODCr emulsion wastewater the technology that emphasized on coagulation-precipitation twice has been proposed in this paper.

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The flocculation could reach 97.0.% after 3 days culture.The microbial flocculants produced by Serratia ficaria are excreted out of the cell, and the flocculants are mostly distributed in zymolytic medium. The flocculation and Zeta potential experiments were made.

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The main research contents in this thesis mainly study its flocculently active: separating the flocculently active microbial strain of EM and the best inoculation quantity of EM and flocculant character of EM.

本文對EM的絮凝特性進行了以下兩方面的研究：1通過增殖培養(yǎng)和定向培養(yǎng)試驗欧洲免费A区B区视频，篩選出EM中絮凝劑產生菌；2通過絮凝試驗国产视频92，探討篩選出絮凝劑產生菌絮凝劑合成的影響因素和絮凝能力的影響因素黄色操逼视频网站。

In addition, the interaction between polysilicic acid and hydrolysis aluminum species in PASiS was discussed.

水處理實驗結果表明，PASiS的絮凝效果優(yōu)于PAC91丨九色丨喷水，PAS玖玖在线资源www网，PASC和PAM等絮凝劑，而又以共聚法制備的PASiS的絮凝效果更佳美足AV无码一区二区；不同堿化度黄色网站aaaa、硅酸聚合度及鋁硅摩爾比的PASiS表現(xiàn)出不同的絮凝性能，吸附架橋及捕獲沉淀是其主要絮凝機理久久黄色国产精品。

Flocculant-producing strains were isolated from edible fungi waste of Guangxi University. Kaolinite suspension was flocculated by the culture broth, which was regarded as the index to determine flocculating activity and ability to produce flocculant.

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The coagulating mechanism of polysilicate-containing composite inorganic polymer flocculants was discussed by studying the Zeta potentials of flocculants and contaminants,the growing processes of flocculates,and the sizes of flocculates.

通過測定含硅多核無機高分子絮凝劑水解沉淀物和廢水中污染物的Zeta電位国产激情无码视频一区二区三区、絮體粒徑及不同絮凝階段的絮體顯微照片午夜日韩电影免费观看，并結合絮凝劑的形貌結構和混凝性能探討了其混凝機理。

Chitosan coagulates fine flocci together into lager, impact floccules and greatly strengthens the polymerization degree and coacervation force. The sedimentation rate and adsorption efficiency rise greatly. So the flocculation efficiency of this composite flocculant is superior to the single one.

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