Effect on the flocculation sedimentation velocity in different conditions of cation concentration by concentration of sediments particles 不同离子浓度下泥沙浓度对絮凝沉降的影响
Different methods are described to measure sludge sedimentation and filtration properties , by use of sedimentation indices , initial sedimentation velocity and capillary suction time ( cst ) 利用沉积作用，最初的沉积作用速度和吸附时间( cst ) ，描述测量烂泥沉积作用和过滤产物的不同方法。
5.
The suitable additives recombination can not only improve considerably the quality of chromium coating , increase the brightness , current efficiency , dispersion ability and sedimentation velocity , but also enlarge the application scope of chromium plating technology 采用适当的添加剂复合不仅可以显著提高镀铬层质量，增加光亮度、电流效率、分散能力和沉积速度，而且可以扩大镀铬工艺范围。
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Using contrast and orthogonal experiment methods , the effect of electrolyte formulae for varied concentration of cr03 and technology of chromium plating on coating property was studied systematically in this paper . primary factors and their interrelations , which influence the brightness of coating , the current efficiency , dispersion ability and sedimentation velocity of electrolyte were discovered 本文采用对比试验和正交试验等方法系统地研究了低、中、高三种不同铬酐浓度的镀铬液组成和镀铬工艺对镀铬层性能的影响，找到了影响镀层光亮度、镀液电流效率、分散能力和沉积速度的主要因素及其相互关系。
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