In this paper,all kinds of computational settling velocity models for activated sludge developed so far are analyzed and compared.
活性污泥系统中二次沉淀池的计算关键是确定活性污泥沉淀速度，本文对现有的计算活性污泥沉淀速度模型进行了分析和比较；论述了ＣＨＯ等人提出的ｕ＝ｋｅｘｐ（－ｎＣ）Ｃ模型具有适用范围广，与实验数据十分吻合，用极限通量理论计算较方便等优点，是目前比较合理的计算公式，文章将ＣＨＯ模型用于极限通量理论中，导出了二次沉淀池的有关计算公式。
The fractal dimension has a close relationship with the settling velocity of flocs.
絮体分形维数与沉淀速度具有良好的对应关系,分形维数越大,絮体沉淀速度越大。
Influences of temperature and saturation states on the precipitation rate of calcium carbonates in seawater Ⅰ. Mg-calcite
温度和过饱和度对海水中碳酸钙沉淀速率的影响Ⅰ.镁方解石
The influences of precipitation temperature on the structure and property of the catalysts were investigated by XRD、SEM、BET techniques.
本研究提出以碳酸钠为沉淀剂的共沉淀法制备M n取代的六铝酸盐催化剂,主要讨论共沉淀过程中不同沉淀温度对所制备的六铝酸盐催化剂的影响。
Effects of precipitation temperature on the performance of CuO/ZnO/Al_2O_3/HZSM-5 catalyst for dimethyl ether synthesis from CO_2 hydrogenation were investigated.
考察了沉淀温度对二氧化碳加氢合成二甲醚催化剂CuO-ZnO-Al_2O_3/HZSM-5的影响,研究结果表明,沉淀温度为343K时,所制备的催化剂前驱体的晶形完整且晶相组成均一,焙烧后的催化剂中CuO和ZnO的相互分散程度较好,催化剂中氧化铜物种比较容易还原,复合催化剂表面具有较强的酸性中心,对于二氧化碳加氢直接合成二甲醚的催化活性最为理想。
Research on Dissolution and Precipitation Rates and Kinetics of Calcite in Seawater near Equilibrium
近平衡状态海水中方解石溶解-沉淀速率及动力学研究
Influences of temperature and saturation states on the precipitation rate of calcium carbonates in seawater Ⅰ. Mg-calcite
温度和过饱和度对海水中碳酸钙沉淀速率的影响Ⅰ.镁方解石
Retardation and Deposition Control Mechanism of Organic Multivariate Acid (SY)
有机多元酸(SY)缓速及防沉淀性能研究
Further and faster removal of phosphorus by chemical precipitation-magnetic flocculation
化学沉淀-磁絮凝深度快速除磷的研究
The experiments shown that precipitation rate of Am,Cm and rareearth have been up to 99.5%.
镅、锔、稀土的一次沉淀率可达99.5%.
The supply of sedment is insufficient to offset the rate of subsidence.
沉积物的补给不足以抵偿沉降的速率。
Effect of Rapid Thermal Process on Oxygen Precipitates in Heavily Doped Silicon Wafers;
快速热处理对重掺杂硅片中氧沉淀的影响
Effect of Rapid Thermal Processing on Oxygen Precipitation Behavior in Czochralski Silicon;
快速热处理对直拉硅片氧沉淀行为作用
Separation and Determination of Rare Earth Element in the Halogenatehal Water by ICP-MS with Precipitation
共沉淀分离-ICP-MS快速测定卤水中稀土元素
Sedimentation and High-rate Air Flotation Combination Technology for Reconstruction of Waterworks
沉淀/高速气浮联用技术用于给水厂改造
An exploration into the sulphide precipitation method and its effect on metal sulphide removal
硫化物沉淀法及其对金属硫化物去除率的探讨
The starch accumulate rate was the fastest at the period of 18 or 23 days and then stable in the stage 28-48 days.
第18至23天淀粉积累速率最快，第28—48天增长速率较平稳。
starch retrogradation
淀粉凝沉, 淀粉回生
A sediment or precipitate that has settled out of a solution.
沉淀溶液中不溶的、沉下的固体沉淀
Deposition rate is increase quickly with sputtering power.
结果表明溅射功率对沉积速率的影响最大，随溅射功率的增大沉积速率快速增大。
INFLUENCE OF VACUUM DEPOSITION RATE ON ELECTRICAL CHARACTARISTICS OF Ni-Cr-Si FILM RESISTORS
真空淀积速率对镍铬硅薄膜电阻电性能的影响
Effect of Porosity Generators on Absorbency Rate Starch-based Superabsorbent
淀粉基多孔高吸水树脂致孔剂对吸液速率影响
The accumulation rate of amylose, amylopectin, total starch in weak grains all reached peaks on 20-25th DAA.
弱势粒直链淀粉、支链淀粉、总淀粉积累速率均在花后20～25天达到峰值。