Large Diameter Sludge Thickeners

Thickeners - Mineral Processing & Metallurgy

Large size Thickeners, above 45′ diameter, use the bridge-type superstructure. The trusses are connected by steel floor beams and crossbraced with angles all joined by heavy bolts, although field welding can be arranged. This type superstructure is usually carried on piers outside the tank rather than on the tank sides.

Sludge Thickening - an overview | ScienceDirect Topics

Sludge thickening is a process in which the solids concentration is increased and the total sludge volume is correspondingly decreased, but the sludge still behaves like a liquid instead of a solid. Thickening commonly produces sludge solids concentrations in the 3% to 5% range, whereas the point at which sludge begins to have the properties of ...

ALDRUM G3 – a revolution in sludge thickening - Alfa Laval

ALDRUM G3 – a revolution in sludge thickening – Rotary drum filter for medium to high capacity sludge thickening | 3 • Flocculation reactor, with or without agitator Simple open reactor that kick-starts the creation of large and strong flocs. Can be installed directly onto the inlet of the drum thickener

Thickener - an overview | ScienceDirect Topics

Larger tanks between 25 and 200 m diameter are normally made from a combination of concrete and steel and employ rakes designed to match the angle of the conical bottom. Circular thickeners are frequently constructed to large scales and can be used to raise suspension concentration prior to another solid/liquid separation process.

Rota-Rake® Solids Thickener - Pretreat - graver.com

Heavy-duty center-post design for large diameter units and other sizes when torque-loading is more than 20,000 ft.-lbs. Torque cage or tube is used as the transmission unit. Feed System – Water enters bottom of center-post, rises to inlet well and flows out through ports in top of post, losing initial velocity.

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

Chapter 5 Sludge treatment - site.iugaza.edu.ps

Chapter 5 Sludge treatment ... S = 5% dry solids in the sludge. D = 36 m (diameter of primary sedimentation tank) ... The main goal of sludge thickening is to reduce the sludge volume by removing as much as possible of the water content of sludge, leading to

Sludge Dynamic thickening - Degremont®

Thickening Resource Book. T H I C K E N I N G 222 2 ... excessive amounts of large particles, sloughing of the solids accumulated between the rakes and the bottom ... Rake lifting devices can be manual for small diameter thickeners or motorised for larger ones.

Large Diameter Center Drive Sludge Thickener - alibaba.com

Large Diameter Center Drive Sludge Thickener , Find Complete Details about Large Diameter Center Drive Sludge Thickener,Sludge Thickener,Sludge Thickening Machine,Thickener from Mining Thickener Supplier or Manufacturer-Zhengzhou Hengxing Heavy Equipment Co., Ltd.

Mechanical Dewatering | SSWM - Find tools for sustainable ...

Jun 10, 2019· Mechanical dewatering is normally associated with large wastewater treatment plants and is used to separate sludge (residual sludge from wastewater treatment plants or faecal sludge from on-site sanitation) into a liquid and a solid part. The principal methods are belt filter presses, centrifuges and chamber filter presses.

LIQUID / SOLIDS SEPARATION IN WASTEWATER TREATMENT ...

material diameter settling time (in mm) per meter gravel 10 1 second course sand 1 10 seconds ... large. influent effluent coagulant flocculant settling of flocs liquid sludge no mixing bridging + floc growth ... rotary screen thickener incoming sludge polymer thickened sludge. centrifuge line diagram motor liquid sludge in centrate sludge cake ...

Outotec Thickening technologies

Outotec® Thickening technologies Leading edge technologies for thickening and clarifying Outotec is a global leader in the design, fabrication and supply of thickening and clarifying solutions for the minerals industry. The revolutionary Outotec® High Rate Thickener has pioneered and redefined thickening and clarifying methods around the world.

FSM H06 CS5 - un-ihe.org

In most existing implementations in low-income countries, the sludge removal is done with backhoes, pumps if the sludge is not too thick to pump, or strong vacuum trucks. On the other hand, in wastewater treatment plants clarifi ers typically include mechanical devices to remove the settled sludge …

Solids Treatment Process | Baltimore City Department of ...

Similarly, solids from secondary treatment, which are lighter and more readily floatable than primary solids, are processed through five gravity belt thickeners and up to four air flotation thickeners. During the sludge thickening process, waste activated sludge, at a dilute liquid of 0.8%, is thickened to a sludge solids concentration between ...

Bridge-Supported Mechanisms for Tank Diameters to 50 Feet

basin diameter may be selected from Table 1. Sizing a Component Thickener Our wastewater thickeners are sized to provide an optimum floor loading rate for a specific influent mixture of primary and secondary sludge. Table 2 lists typical loading rates for different influent profiles. To calculate the required thickening area, divide the total ...

Products & Services: Sludge | WaterWorld

They provide an efficient air saturation system for waste activated sludge thickening and can be integrated into many OEM DAF units. The pumps produce ultra-fine micro-bubbles less then 30 microns in diameter. This can help reduce costs over previous DAF systems. Shanley Pump & Equipment Inc. Arlington Heights, IL

Sludge Thickener Price - made-in-china.com

Sludge Thickener Price - Select 2019 high quality Sludge Thickener Price products in best price from certified Chinese Sewage Thickener manufacturers, Sludge Drum Thickener suppliers, wholesalers and factory on Made-in-China.com

Screw Press, Screw Press Dewatering, Sludge Dewatering ...

When applied to sludge thickening, the same DRYCAKE Screw Press models are capable of processing increased inlet sludge flows over the above sludge dewatering capacities and higher, determined by the incoming sludge concentration and the final sludge dry solid content requirement.

How a Thickener Works - Mineral Processing & Metallurgy

Wash water, introduced in the bottom compartment, rises successively through the compartments in a direction counter current to that of the sludge. One tall thickener thus does the work of several relatively shallow thickeners of the same diameter. Floor space is conserved, heat insulation is simple and effective, and power is reduced.

Gravity thickener - SlideShare

Mar 02, 2014· Gravity Thickener Gravity thickener is essentially a sedimentation process similar to the process that occurs in all settling tanks. It is the most common process currently used for dewatering and for the concentration of sludge before digestion. It is accomplished in a sedimentation tank in which solids separate from liquid phase by settling.

Automatic Sludge Blanket Control in an Operating Gravity ...

This report covers a full- scale demonstration of automation of a sludge thickener. ... Each basin is 65 ft in diameter with a 10 ft sidewall depth and is equipped with a rotating sludge collector, skimmer and peripheral launder as illustrated in Figure 2. ... Relatively large, fibrous clumps of sludge solids accumulated in the over- flow ...

Clarifiers & Thickeners - Triveni Group

Bridge spanning half the tank diameter & Rake Arms spanning full tank diameter Rugged Drive Head with torque overload with independent mixer drive. Feed from bottom of tank connecting to central draft tube Available for sizes upto 50M and above Features CLARIFIERS & THICKENERS - …

DRIVES FOR CLARIFIERS & THICKENERS | SPS Engineering

drives for clarifiers & thickeners THE DRIVE UNIT IS THE MECHANICAL CORE OF CLARIFIER OR THICKENER THAT PRODUCES LOW SPEED HIGH TORQUE ROTATION OF THE SLUDGE COLLECTOR ARMS TO PERMIT POSITIVE SLUDGE COLLECTION AND REMOVAL FOR PROPER UNIT OPERATION.

Conventional Thickeners - Solid Liquid Separation

For bridge and column type thickeners with tanks that are mounted on ground level the access to the slurry pumps is trough a tunnel. For very large column type thickeners the column is constructed as a caisson that is submerged in the slurry so that the pumps are housed at the bottom of the chamber and deliver the underflow upwards.