Thickener is an equipment designed for solid liquid separation by gravity settling.The main goal of the thickener or of a thickener plant is to separate the solid amp; liquid part from the slurry and to concentrate as much as possible the solid part in the bottom of the thickener in order to get from the top of the thickener, clear water as much as possible free from the solids.
McLanan offers a range of thickener types, including High Rate , Ultra Rakeless, High Density and Paste, that are tailored to an individual application. They can be used as stand alone solutions or in conjunction with other equipment. High Rate Thickeners are used by the aggregate and mining industries, as well as environmental contractors ...
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In practice, clarifier sizing is often based on a handbook value for a particular type of waste. Now, we shall compare a handbook value to the batch flux curve technique. These values are often reported as a rise rate. For this application 33 41 m3/day/m2 is considered typical; the range for typical overflow rates is 16 73 in the same units . The overflow rate in the previous batch flux curve illustration is: Rise rate = wastewater flow rate/clarifier area = 23.4 m3/day/m2 . Batch flux sizing of the clarifier has placed the size in the conservative end of the published design range. Besides providing the security of smooth operation from an effluent standpoint, using the batch flux technique to size clarifiers also ensures control of the underflow. The achievable underflow concentration is easily calculated. For chemical processes, the batch flux technique can be applied to new systems that lack published guidelines. The size c...
The major benefit of the batch flux curve is during operation. The curve plots the solids loading and expected underflow concentration, and determines the required pumping rate to achieve the greatest separation from the equipment. The idea is to achieve a critically loaded settling unit. This is done by constructing operating lines as illustrated in the thickener design example. Figure 9 and Table 2 illustrate the effects of underloading, critically loading, and overloading a thickener. Underloading is the most common condition found in a thickener . In this case, the sludge blanket is not allowed to develop, and excess water is pumped out of the thickener underflow. Figure 9 shows an underflow of only 150 kg/m3of TSS. Using Eq. 9a the current pumping rate would be see Eq. 10. In this case, the new operating line would be constructed to determine the optimum underflow concent...
How a Thickener Works. Thickening or dewatering may be defined as the removal of a portion of the liquid from a pulp or slime made up of a mixture of finely divided solids and liquids. The early methods of thickening employed plain, flat bottomed tanks into which the pulp was fed until the tank was full. The solids were then allowed to settle ...
fit for all design, is not necessarily the optimum solution. Our designs are simple yet robust and reliable. Our philosophy is to minimise the customers total operating costs, thus minimising capital and operating expenditure. The full product range includes: Attrition Scrubbers Clarifiers and Thickeners
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Thickener or Thickener plant COGEDE
Thickener is an equipment designed for solid liquid separation by gravity settling.The main goal of the thickener or of a thickener plant is to separate the solid amp; liquid part from the slurry and to concentrate as much as possible the solid part in the bottom of the thickener in order to get from the top of the thickener, clear water as much as possible free from the solids.