Successful application of a new type sediment tower white water reclaiming system indicates that advanced tower structure and a white water reclaiming system in accordance with the production process are most important.

And a new method for calculating the diameter of thickening equipment with central feeding, such as, rake thickener, deep cone thickner, settling tower, thickening hopper etc, according to properties and states of fluid movement proposed by the author.

The diameter and height of testing fluidized-bed are 400 mm and 3200 mm. It has a simple structure and adaptability for concentration variation of solution. The operation is easy and steady and it will have a broad application in the industry.

The diameter and height of the tested fluidized-bed equipment were 400 mm and 3200 mm. Its structure was simple, and it had good adaptabilily for variation in the solution concentration. It was operated easily and steadily and it will be expected to have broad industrial use.

When PAC and CG_A were used synergistically, the number of total particulates of final effluent was 11000 per liter, membrane factor (MF) value was 40～60, however, in a similar way except that CG_A was omitted, the two values of disposed wastewater were 68000 and 13～16 respectively. The experiment results showed that CG_A and fluidized sedimentation tower were very efficient in removing superfine particulates from water.

A simple procedure, using settling column experiment data, for calibration is proposed.

The characteristics of the settling curve, and the possibility that it is influenced by the height of the settling column of solids, can be predicted from yield stress measurements.

Settling velocities of Humber-Ouse SPM, sampled in situ and measured using a settling column, maximized at 1.5?mm s-1 and exhibited hindered settling at higher SPM concentrations.

A study was carried out in a specially designed settling column to investigate the settling characteristics of effluents arising from Karachi tanneries.

vs loading rate and detention time were constructed using data obtained from settling column.

The method is called the 'settling tower' and consists in taking sequential pictures of particles falling under gravity in calm air.

The mean Vs was measured with the 'settling tower' with less than 12% error, while the standard deviation of the Vs distribution was estimated with less than 51% error.

The reason for the small overestimation of Vs for Lycopodium spores by the 'settling tower' method is discussed.

Preliminary measurements shows that, the 'settling tower' could be of great practical interest for measuring the distribution of Vs of maize pollen as well as other types of pollen or spores.

The settling velocity of suspended particles near the bottom was measured with the use of a settling tower in the laboratory.

The formulae for designing the thickening equipment both in this country and abroad are not based on the properties and states of fluid movement. This paper describes properties and states of fluid movement by using "potential function", "flow function", continuity equation and Laplacian equation established by fluid mechanics. And a new method for calculating the diameter of thickening equipment with central feeding, such as, rake thickener, deep cone thickner, settling tower, thickening hopper etc, according...

The formulae for designing the thickening equipment both in this country and abroad are not based on the properties and states of fluid movement. This paper describes properties and states of fluid movement by using "potential function", "flow function", continuity equation and Laplacian equation established by fluid mechanics. And a new method for calculating the diameter of thickening equipment with central feeding, such as, rake thickener, deep cone thickner, settling tower, thickening hopper etc, according to properties and states of fluid movement proposed by the author.

The process of preparing ammonium diuranete with high quality and coarse grain is presented,which was precipitated by fluidization technique in sulfuric acid-ammonium sulfate or sulfuric acid-chloride solution system. In sulfuric acid-ammonium sulfate solution system, the product produced by conventional agitation-precipitation method contains 63. 18% of U and 13. 3%of SO42-, and the percentage of particles with diameter >40/zm is 33. 91%. Under the optimum conditions with fluidization techique the values are...

The process of preparing ammonium diuranete with high quality and coarse grain is presented,which was precipitated by fluidization technique in sulfuric acid-ammonium sulfate or sulfuric acid-chloride solution system. In sulfuric acid-ammonium sulfate solution system, the product produced by conventional agitation-precipitation method contains 63. 18% of U and 13. 3%of SO42-, and the percentage of particles with diameter >40/zm is 33. 91%. Under the optimum conditions with fluidization techique the values are 69. 94%,3. 7% and 75. 87% respectively. In the sulfuric acid-chloride solution system,the product obtained by agitation method in factory contains 58% of U and 5% of Cl-, and the percentage of particles size >40um is 1. 6%. By using fluidization method the values are 68%,0. 22% and 41. 46% respectively. The diameter and height of testing fluidized-bed are 400 mm and 3200 mm. It has a simple structure and adaptability for concentration variation of solution. The operation is easy and steady and it will have a broad application in the industry.

The process of preparing ammonium diuranete with high quality and coarse grain is presented, which was precipitated by fluidization technique in sulfuric acid-ammonium sulfate or sulfuric acid-chloride solution system. In sulfuric acid-ammonium sulfate solution system, the product produced by conventional agitation-precipitation method contains 63. 18% of U and 13. 3%of SO42-, and the percentage of particles with diameter>40 um is 33. 91%. Under the optimum conditions with fluidization techique the values are...

The process of preparing ammonium diuranete with high quality and coarse grain is presented, which was precipitated by fluidization technique in sulfuric acid-ammonium sulfate or sulfuric acid-chloride solution system. In sulfuric acid-ammonium sulfate solution system, the product produced by conventional agitation-precipitation method contains 63. 18% of U and 13. 3%of SO42-, and the percentage of particles with diameter>40 um is 33. 91%. Under the optimum conditions with fluidization techique the values are 69. 94% ,3.7% and 75. 87% respectively. In the sulfuric acid-chloride solution system,the product obtained by agitation method in factory contains 58% of U and 5% of Cl-, and the percentage of particles size >40 um is 1. 6%. By using fluidization method the values are 68%,0. 22% and 41. 46% respectively. The diameter and height of testing fluidized-bed are 400 mm and 3200 mm. It has a simple structure and adaptability for concentration variation of solution. The operation is easy and steady and it will have a broad application in the industry.