Gravity thickener - SlideShare

Shallow feed wells may be used when overflow clarity is not important, the overflow rate is low, and or the solids density is appreciably greater than water. Overflow Launder Clarified effluent typically is removed in a peripheral launder located inside …

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Separation, Dewatering and Disposal of Sugar Beet ...

EPA-660/2-74-093 DECEMBER 1974 Environmental Protection Technology Series Separation, Dewatering and Disposal of Sugar Beet Transport Water Solids National Environmental Research Center Office of Research and Development U.S. Environmental Protection Agency

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Chapter 15

Operation of the thickener to provide clarified overflow depends upon the existence of a clear-liquid zone at the top. If the zone is too shallow, some of the smaller particles may escape in the overflow.

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De-Watering Information and Equipment

The clear water or liquid overflows at the top of the thickener, in a wier, which channels the clear water to the overflow discharge. The overflow is pumped from the thickener. Thickener Rakes In Action : The drawing at left shows a small pilot scale thickener.

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PHOENIX Process Equipment - Mining Technology

Sedimentation thickening uses polymers to agglomerate fine particles, increase the solids settling rate and reduce the size of slurry ponds by immediately returning 75%-80% of the process water as thickener overflow to the wash plant. Thickeners, however, cannot totally eliminate the need for slurry ponds.

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Optimise thickener efficiency for maximum profitability ...

Large tanks, known as thickeners, are used to separate fine suspended mineral particles from the process water, producing a stream of clarified water from the top of the thickener overflow and a thick sludge of settled solids (underflow) from the bottom. Flocculants are mixed with the solid/liquid suspension in the entry feedwell of the thickener.

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APPLICATIONS - Sepor

1. The surface area determines the capacity of the thickener. 2. Feed velocities must be controlled, to not exceed certain parameters. 3. Overflow velocities are also controlled, to balance the clear water overflow with the balance of the thickener operations, such as feed inflow, settling zones, compression zones, and compacted solids zones. 4.

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PHOENIX HiFloTM Thickener - …

PHOENIX HiFloTM Thickener Model HF ... clarified liquid. The overflow water is clean enough for use in the wash plant or as belt wash water for a belt filter press.

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Minerals & Metallurgical Processing

Thickening is used during two primary mineral processing operations: water removal and desliming. During water removal, the pulp density is increased through the injection of flocculants. These flocs settle and create a dense pulp while clarified water is removed through the overflow. During desliming, fine particles are removed through the overflow.

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OVIVO - Municipal Wastewater - Sludge Handling - …

OVIVO - Sludge Thickener by Ovivo (Formerly Eimco Water Technologies). The Ovivo sludge thickener is designed to continuously produce as thick a sludge as possible from streams of sludge previously formed and collected in separate settling basins.

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Use of dextran as a filtration aid for thickener overflow ...

Feb 25, 1992· Use of dextran as a filtration aid for thickener overflow ... clarified solution If desired, water ... dextran is usually dissolved in water or ...

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Arab Potash Company - Plants And Production Process

Home Products & Operations Plants And Production Process Potash ... with water. The resulting solids ... is clarified in a thickener, and then the overflow is pumped ...

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Optimise your thickener efficiency for maximum ...

Optimise your thickener efficiency for maximum profitability. ... clarified water from the top of the thickener ... overflow is to be discharged. Recycled water ...

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Tomato Flume Water Recycle With Off-Line Mud …

TOMATO FLUME WATER RECYCLE WITH OFF-LINE MUD REMOVAL ... thickener overflow bypassed to the sewer. ... Only clarified water was discharged to the sewer.

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thickener sludge clarified - ecole-ethe-saint-mard.be

Sludge thickener tank_Sludge thickening process Sludge thickener tank is commonly used in the concentrator concentrates and , hopper discharge; around the clarified water from the thickener overflow Treatment of alluvial .

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the polymer in thickener overflow floatation - …

in the thickener is the clarified water at the … the polymer in thickener overflow floatation. Sludge thickener tank is commonly around the clarified water from the thickener overflow.

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OVIVO® Thickener - Worldwide Experts in Water …

The Ovivo thickener offers sludge ... Flowsheet Municipal Drinking Water. ... of gravity separation of solids from liquid to produce a clarified overflow water and ...

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Coal Mining and Preparation Mineral Industry Solutions

Thickener. Hydrocyclone overflow and flotation unit underflow solids are removed in a high-rate thickener. The thickener also receives horizontal vacuum belt filtrate that is rich in fine solids. The thickener allows the solids to settle and produces a clarified water stream which can be recycled back to the plant.

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Clarifier - Ovivo | Worldwide Experts in Water Treatment

The Ovivo ® suction pipe clarifier is designed for municipal wastewater treatment applications. It uses 'organ' pipes, for suction.

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Thickener Feed System Design - Water and Wastewater ...

Thickeners often require dilution of the feed to improve settling rates and floc consumption. Dilution systems that rely on specific gravity differential between the feed and supernatant are often limited. WesTech’s AirLift dilution system uses an airlift pump to draw clarified water evenly from the thickener surface into the feedwell.

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Thickeners | Sepor

3. Overflow velocities are also controlled, to balance the clear water overflow with the balance of the thickener operations, such as feed inflow, settling zones, compression zones, and compacted solids zones. 4. Withdrawal of compacted solids (underflow) must likewise be controlled to maintain a balance in the thickener.

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Thickener Clarifier - Scribd

Jun 16, 1981· An overflow line 30 with one or more outlets 31 in the upper part of the feed well is provided for the 40 introduction of water or the return of clear solution to the unit. The device shown will normally have a center scrapper 32 located at the lower end of shaft 15 and a mechanism. rather than rotary.

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Improve Clarifier and Thickener Design and Operation

Improve Clarifier and Thickener Design and Operation ... a clarifier produces clean water, while a thickener concentrates a ... the range for typical overflow ...

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CA2850155A1 - Thickening treatment of oil sands …

The thickener can have a sidewall defining lower, intermediate and upper levels of the vessel; a feedwell; an underflow outlet at the lower level; a clarified overflow outlet at the intermediate level; and an unclarified overflow outlet at the upper level.

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Chapter 5 Solids Thickening Dewatering Jan 2005

concentrations that will be achieved by gravity thickening. Overflow ... clarified effluent flows ... a gravity belt thickener allowing free water to drain ...

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Envites - Slurry thickeners

Production and treatment of process and drinking water; Description of slurry thickeners ... The thickener tank is ... rises counterflow to the overflow trough and ...

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Centrifugation Lenntech - Water Treatment and …

The centrifugation : principle ... each chamber and the clarified liquid emerges as an overflow from the ... can finally be operated so as to act as a thickener, ...

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Clarifier Sludge Judge - Environmental leverage Inc

What do I need to do to operate my clarifier ... not only for hydraulic overflow ... of the sludge thickener tank showed too much water, ...

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the polymer in thickener overflow floatation

Chapter 11 - New Mexico Environment Department- the polymer in thickener overflow floatation ,functions; thickening, digestion, dewatering and sludge overflow pipe or injected into the sludge recirculation line Many digesters are equipped with floating covers, (most as polymers can be used to enhance many of the sludgeDescription of the Water ...

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Feeding a Thickener for Good Settling and Underflow ...

The interface is that point where the solids of the thickener and the water that is relatively clean meet. The SOLIDS may also he called the UNDERFLOW. While the water is called either the LIQUEUR or the OVERFLOW.

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Optimising thickener efficiency - …

Large tanks, known as thickeners, are used to separate fine suspended mineral particles from the process water, producing a stream of clarified water from the top of the thickener overflow and a thick sludge of settled solids (underflow) from the bottom. Flocculants are mixed with the solid-liquid suspension in the entry feedwell of the thickener.

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the polymer in thickener over flow floatation

... clarification and thickening The clarified overflow is normally returned ... Digesters Polymer Replace overflow weirs with submerged clarified water ...

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thickener sludge clarified - ecole-ethe-saint-mard.be

in the thickener is the clarified water at the overflow. Sludge thickener tank_Sludge thickening process Sludge thickener tank is commonly used in the concentrator concentrates and , hopper discharge; around the clarified water from the thickener overflow Treatment of alluvial .

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the polymer in thickener overflow floatation - …

Sludge thickener tank is commonly around the clarified water from the thickener overflow. Use sludge thickener tank can ... Contact Supplier

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How a Thickener Works - Mineral Processing & …

Dorr thickeners are used in the metallurgical field to thicken prior to agitation and filtration, in the countercurrent washing of cyanide slime, for thickening ahead of flotation, for thickening concentrates, and for dewatering tailing to recover the water for reuse in …

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High Rate Thickeners - HiFlo™ - PHOENIX Process …

Clarify wash plant effluent water while thickening slurry to reduce the volume of slurry going to the pond. AltaFlo™ High-Rate Thickeners Thicken, clarify, mix, flocculate, and remove sludge all in a single tank.

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Thickening - Resource Book

the center of the thickener and removed. The overflow liquid is removed from the thickener in a peripheral launder. The conventional thickener relies on the settling velocity of the particles, due to gravity, being greater than the upward velocity of water being displaced to the overflow launder.

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OVIVO® Thickener - Worldwide Experts in Water …

The Ovivo® thickener mechanism uses the fundamental principal of gravity separation of solids from liquid to produce a clarified overflow water and sludge. The sludge or minerals enter the thickener though the column or a side influent pipe and then into the feedwell.

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