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Thickener sizing and the importance of testwork ...

3. Dynamic thickener testwork. This is the method through which the most accurate thickener sizing and prediction of process performance is achieved. Most reputable and experienced thickener suppliers have developed a number of dynamic testwork units of various sizes and configurations.

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De-Watering Information and Equipment

A thickener is a machine that de-waters slurry, separating the liquid from the solids. The solids' particle size range in thickeners is generally from 0.5 mm to a few microns. The finer the particle size, the slower settling and compaction rate.


The high time for thickeners was in the 60's when the metallurgical industries were booming and sizes of up to 150 m diameter were constructed. Such jumbo thickeners, when centrally driven, require for most demanding applications extra heavy duty drive heads some of which reach a continuous operating torque of 3.300.000 Nm.

Sizing and Operating Thickeners -

Sizing and Operating Thickeners. Previous Next. View Larger Image; This paper presents a development of thickening theory which provides a reliable and easy-to-use method for determining the size of continuous thickeners from batch settling tests. It also offers a description of thickener operation performance based upon the proposed method.

Testwork and sizing for paste thickeners - International ...

One of the challenges with paste thickening applications is the accurate testing and thus sizing of the units. To size high rate and high compression thickeners, dynamic bench-scale or pilot-scale testwork is the preferred approach. However, static cylinder testwork and the application of the Talmage and Fitch construction is still sometimes used.


Thickener sizing should account for variability in both the quantit y and quality of feed that is presented . to it. Testwork data should indic ate the frequency and extent of slow-settling solids

High-rate Thickener | FL

High-rate Thickeners are designed to provide roughly 12 times the throughput of conventional machines of similar size. The key features for high-capacity thickeners are the …

HiFlo™ High-Rate Thickener - WesTech Engineering, Inc.

Separation is effected rapidly because of the system hydraulics, which can be in excess of twenty times the hydraulics of conventional thickeners. As a result of the innovative design and associated hydraulic efficiency, the plant area for the HiFlo high-rate thickener is greatly reduced, even making indoor installations practical.

Thickener | Article about Thickener by The Free Dictionary

thickener[′thik·ə·nər] (engineering) A nonfilter device for the removal of liquid from a liquid-solids slurry to give a dewatered (thickened) solids product; can be by gravity settling or centrifugation. Thickener an apparatus or device for thickening. Depending on the operating principle, distinctions are made between gravitational, inertial, and ...

How to Use | Thick-It

Please see our mixing chart for guidelines on the amount of Thick-It ® Clear Advantage ® Instant Food & Beverage Thickener to use and proper standing time for achieving mildly thick (nectar), moderately thick (honey), and extremely thick (pudding) consistencies. Add level measured thickener into a …

Effect of settling test procedure on sizing thickeners ...

The size distribution of the feed to the thickener showed that 91% of particles were smaller than 38 μm and only 0.6% were coarser than 75 μm. Thickener unit area was determined to be 9.6 m 2 /(t/h) using the Talmage–Fitch method.

How to Size a High-Rate Thickener - Thickening, Filtering ...

My topic is about calculations for Sizing a high rate thickener: During the last decade, various methods have been utilized in sizing a thickener such as Coe and Clevenger, Talmage and Fitch and Wilhem-Naide. Which method is superior (recommended) in sizing a high rate thickener? Which value of impa

Effect of settling test procedure on sizing thickeners ...

Effect of settling test procedure on sizing thickeners Article in Separation and Purification Technology 122:87–95 · February 2014 with 3,243 Reads How we measure 'reads'

Sludge Thickening - an overview | ScienceDirect Topics

In applications where used washwater (without settlement) is mixed with clarifier sludge, the sizing of the flow balancing tanks becomes critical because of the large surges of dilute used washwater. The sludge concentration achieved in the thickener is independent of the feed concentration.

How to Size a Thickener - Mineral Processing & Metallurgy

Knowing how to size a thickener and determine the capacity required to handle a pre-determined tonnage of a certain pulp, by overflowing a clear solution and obtaining the desired pulp density of thickener discharge, depends upon the settling rate of that particular pulp. The settling rate of any pulp is easily determined by simple laboratory tests such as outlined below: Laboratory Test ...

4 x Flowrate 4 x 200 π Riserate - MIP Process Technologies

MIP Thickener Design The following is a short cut to designing your own thickener: (a) Size of Thickener As a first stab we can either use the thickener flux (m

Gravity Belt Thickener by Aqualitec

Customers use OMEGA in a number of sludge thickening applications: As a final step to increase the dry solids concentration to 6-8%, replacing conventional gravity static thickeners, flotation systems, and other inefficient technologies. As a pre-dewatering stage, when combined in?line with a belt filter press, to optimize filter press efficiency.

Conventional Gravity Thickeners - WesTech Engineering, Inc.

Conventional Gravity Thickener Overview: WesTech's complete line of high rate, heavy duty thickeners offers the most advanced designs for use in the industry. WesTech equipment is engineered and manufactured to the highest standard in quality. It offers the precision and durability required to keep your process going.

Conventional Thickeners

Description. Conventional Thickeners are generally incorporated in heavy duty applications when the underflow density is high and substantial torques are required to convey the settled solids from the periphery to the central outlet for pumping away.

Improve Clarifier and Thickener Design and Operation

A design method for thickeners and clarifiers known as the batch flux curve technique was developed over 20 years ago, but still is not well-known in design and operating circles. An informal survey of major clarifier and thickener manufacturers found that none of the firms surveyed use this method for sizing and maximizing operating conditions.

Beginners Guide to Thickeners - Outotec

Beginners Guide to Thickeners; ... Size, shape, surface chemistry, and solids density all influence this process. These properties must be considered when selecting a rise rate, solids loading, and bed depth for a thickener. Rise rate parametrizes the area required to recover the design flow or solids loading, the design dry tonnage.

Biosolids Technology Fact Sheet Gravity Thickening

xvEPA United States Environmental Protection Agency Biosolids Technology Fact Sheet Gravity Thickening DESCRIPTION Thickening is the process by which biosolids are condensed to produce a concentrated solids product and a relatively solids-free supernatant.

Hycor® ThickTech™ - Rotary Drum Thickener | Parkson ...

The Hycor ® ThickTech™ Rotary Drum Thickener (RDT) is the industry leading sludge thickener. Its performance is unmatched, with sludge volume reduction of 90% and a 98% capture rate. In addition, this superior performance is achieved with very low amounts of polymer.

Sizing a high rate thickener - Thickening, Filtering, CCD ...

During the last decade, various methods have been utilized in sizing a thickener such as Coe and Clevenger, Talmage and Fitch and Wilhem-Naide. Which method is superior (recommended) in sizing a high rate thickener? Which value of impact factor is recommended in sizing a high rate thickener?

Gravity Belt Thickener | Komline-Sanderson

G-25 thickening system: designed for use in small plants and is generally appropriate for 0.5% to 1.0% waste activated sludge feed rates up to 125 GPM (7.9 liters/sec or 28 M3/h). The model G-25 system is available in one size only, 0.75 meters effective width; it is a packaged, fully piped and wired thickening system complete with all auxiliaries.

CHAPTER 3 SLUDGE THICKENING - Marmara Üniversitesi

CHAPTER 3 SLUDGE THICKENING Thickening is a procedure used to increase the solids content of sludge by removing a portion of the liquid fraction. To illustrate, if waste activated sludge, which is typically pumped from secondary tanks with a content of 0.8% solids, can be thickened to a content

MIP Process Technologies | Thickener Sizing

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