結絮作用 的英文怎麼說
中文拼音 [jiēxùzuòyòng]
結絮作用
英文
flocculation-
Washing the wads with water, and the testing for alkalinity gave a negative result.
用水洗滌玻璃絮，然後作堿性檢驗得到了否定的結果。By making some assumptions, collision frequency were presented. then the the flocculation kinetics model was established through population balance equation. comparison of experimental data and modeling results indicate that there are the same trend between the two. so the model can predict floes number and size during flocculation of yellow river ' s loess particles without using empirical parameters. the tem and sem were used to obsever floes in the study of floe structure. the flocculation was divided as flocculi, floc and floe aggregate. the floes structure model was established by assumption that particles position in floe accords with tetrahedron. the fractal dimension of model and experimental floes was found to be coincidentso the model can reflect the structure of flocs formed in flocculation of yellow river ' s loess particles by macromolecule flocculant at a certain extent
最後，本文還對絮凝動力學和絮體結構進行了研究，在前人研究的基礎上，針對高分子絮凝黃河泥沙，對絮凝過程作了一些符合試驗條件的假設，建立了顆粒碰撞頻率表達式，應用了顆粒數量平衡方程，從而建立了絮凝過程的動力學生長模型，模型計算結果與試驗數據對比表明，二者趨勢一致，在沒有使用經驗參數的情況下基本上能夠描述黃河泥沙絮凝過程中絮體數量和尺寸分佈的變化過程；對絮體結構的研究中，應用掃描電子顯微鏡和透射電子顯微鏡對絮體進行了觀察，將絮體分為絮粒、絮團和絮網三個不同的生長階段，通過假設顆粒結合位置符西安建築科技大學博士學位論文合正四面體，建立了絮體結構模型，計算得到的模型絮體分形維數基本與試驗中的實際絮體相符，在一定程度上能夠反映高分子絮凝黃河泥沙生成的絮體結構。On the basis of theory analysis, the average transmitted light intensity ( correspond to dc value ) was determined as characteristic parameter of raw water using photoelectric method for monitoring the fluctuation of transmitted light and photometric dispersion analyzer ( pda ). the dc value was closely related to both particle concentration and surface area of sand clay simultaneously. the experimental results shows that there is an exponential function relation between dc and surface area of sand clay in unit volume water ( sp ) : dc = asbp in which a and b are empirical coefficients. then the formula of macromolecule flocculant dosage is found to be d = f ( dc ) = e ( dc ) f in which e and / are empirical coefficients and the average correlation coefficient equal to 0. 981. so the model of automatical control system of water treatment plant was established using the formula
應用透光率脈動檢測技術和光散射顆粒粒度分析儀（ pda ） ，通過理論分析，將pda的輸出信號之一? ?平均透光強度（對應于dc值）作為原水的特性表徵參數， dc值可以同時反映顆粒濃度和比表面積因素的影響，試驗結果證明， dc值與單位體積水中泥沙顆粒總表面積s _ p之間具有很好的冪函數關系： dc = cs _ p ~ d ，式中c 、 d為經驗系數，進而得到了以dc值為參數的高分子絮凝劑投藥量公式： d = f （ dc ） = e （ dc ） ~ f ，式中： e 、 f為經驗系數，平均相關系數達0 . 981 ，利用所建立的公式，建立了前饋? ?后饋聯合控制的在線自動投藥模型。The results showed that the rubber latex particles separated the clay into nanometer units, accompanied with the competition between separation of rubber latex particles and re - aggregation of single silicate layers upon addition of flocculant during the process of co - coagulating, while the intercalation of rubber molecules into clay galleries did not occur
結果表明，在加入絮凝劑使橡膠乳液黏土水懸浮液共凝聚的過程中，由於存在膠乳粒子對黏土片層的隔離作用與在混合液中分散的黏土單片層的重新聚集作用的競爭，因此，在絮凝物中，橡膠大分子將黏土片層隔離成納米分散單元（包括單片層和多片層的聚集體） ，在多片層的黏土聚集體層間沒有橡膠大分子插入。The mean diameter increases with the increase of alum dose, but the fractal dimension does not vary. however, extremely high dose of sluminum results in an increase of floc diameter but a decrease of the fractal dimension. the main reason is the sweep floes is too loose in their structure, and ca n ' t resist the shear force
隨著投藥量的增大，絮凝體分形維數的變化較小，但絮凝體平均粒徑顯著增加；當投藥量過高時，網掃絮凝作用下的絮體結構鬆散，抗剪切能力差，具有較小的平均粒徑和分形維數。With the fractal theory and some sorts of kinetic growing model of fractal floes put forward by written, menkin and so on, this paper designs many static flocculation experiments to research the modal characteristic of the floc
實驗結果表明，當採用硫酸鋁作為混凝劑時，在不同混凝條件下形成的絮凝體的分形維數值為1 . 31 ~ 2分享友人