Conventional Thickeners
The Conventional Thickener. 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 …
Hycor® ThickTech™
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. The RDT system is quite compact and requires less floor space than other ...
Thickening | SpringerLink
In a Conventional Thickener the feedwell is located in the upper part of the tank. When the feed enters it, it is diluted to the so-called conjugate concentration by an upcoming flow of water. The diluted suspension settles at a constant velocity to form sediment at the bottom of the tank. Figure 8.12 shows a scheme of a conventional …
Static thickener
Classic mechanized thickener diameters range from 7 to 30 m. Concrete structure floors have a slope of approximately 15%; however this figure may be exceeded when heavy hydrophobic sludge is involved. A centrally driven, twin diametric arm scraper is used.Appropriate drive torques are applied:60-80 m.daN · m –2 for dense mineral …
Controlling Sludge in Lamella Clarifiers | Environmental XPRT
Controlling Sludge Blanket Build up. Effluent enters the Lamella Clarifier via an inlet pipe, entering the plates through the side openings where the liquids and solids are then separated. The liquid flows upwards, whereas the solids settle on the plates and slide down into the hopper. This settlement process is highly effective and operates ...
Raking in gravity thickeners
The pilot-scale thickener facility used in this study is a closed loop system and is shown schematically in Fig. 1.A sample of slurry is mixed continuously in a 4.5 m 3 mixing tank, and pumped out of the mixing tank underflow into the pilot thickener. The thickener tank is a 2 m diameter by 2 m high side wall tank with a 14° floor and a small …
ALDRUM G3 rotary drum thickener a new standard | Alfa Laval
The Alfa Laval ALDRUM G3 is ideal for medium to large capacity municipal or industrial sludge thickening to optimize processes with higher biogas production or more cost-efficient dewatering. Difficult sludges that traditionally require liquid polymer to flocculate and thicken can be treated using a powder polymer – reducing your operating ...
Systems Concept for Sludge Thickening
Unique sludge thickener for efficient sludge treatment for up to 200,000 PE with an inclined, slowly rotating filter disc that separates flocculated sludge from filtrate. Sludge volume reduction up to 90%. >> go to product >> go …
Reprocessing and Resource Utilization of Landfill Sludge—A …
In the past, due to improper sludge treatment technology and the absence of treatment standards, some municipal sludge was simply dewatered and then sent to landfills, occupying a significant amount of land and posing a serious threat of secondary pollution. To free up land in the landfill area for the expansion of a large-scale …
Sludge scraper mechanisms – Removal of settled sludge
At the very bottom of the hopper is the sludge outlet which in most cases is connected to a sludge removal pipe. When enough sludge has accumulated in the hopper a sludge pump is turned on and sludge is sucked out of the basin. ... Also, the degree of sludge thickening can be adjusted by changing the sludge removal cycles. Chain …
Sludge Thickening
Good sludge thickening is required as a prerequisite for the efficient further treatment or dewatering of sewage sludge. The HUBER ROTAMAT® Screw Thickener RoS 2 is a very high performance efficient system for thickening waste activated sludge. It is a compact and fully enclosed system with very low operational costs, reliable and requires ...
Thickeners and Clarifiers
a conventional thickener tank with standard center drive rake mechanism •mechanism and rake lift Substantial reduction in TIC due to large settling area to floor area ratio LTC 440 - 5400m2 Key features • Cylindrical or Conical tank with inclined plate packs, for high thickening performance & extended sludge buffering
1.5: Solids Handling Processes
Primary Treatment Sludge Thickening. Gravity thickening is commonly used to thicken primary solids. The purpose of thickening is to reduce the water content. This makes a more concentrated sludge that will require smaller digesters in the next treatment stage. Gravity thickening works very similarly to primary sedimentation.
Thickeners and clarifiers Complete range of reliable and …
Our comprehensive range of solutions include: World's largest and highest capacity bridge and column mounted thickeners. High-rate and standard thickeners. High-density thickeners. Deep cone paste thickeners. Traction thickeners. Clarifiers. Reactor clarifiers. Lamella clarifiers.
THK Hybrid System Thickens Without Polymer
A unit already in full-scale operation achieves economic payback in about two years. Thickening of waste activated sludge (WAS) before anaerobic digestion can reduce costs substantially. Typically, WAS is more difficult to thicken than primary sludge. Traditional methods include gravity belt and rotary drum thickeners and dissolved air ...
Most common problems in thickener operations (part 1)
Figure 1. Conventional thickener. Depending on the configuration of the plant, the type of mineral and the thickener technology, the recovery of water can vary between 65% to 95% of the process water, as shown in figure 2. Figure 2. Water balance of a high-density thickener in an iron ore concentrator plant
Municipal Sludge Thickening Technologies | SpringerLink
A variety of techniques are used to thicken sewage sludge. In terms of the physical process employed, sludge thickening can be performed using gravitational, centrifugal, or buoyancy forces. Gravitational thickening is the simplest method of reducing the free water content in sewage sludge with a very low energy input.
Sludge Thickening
A gravity thickener is much like a clarifier in that the sludge/water mixture enters through the center in the influent line. This reduces the hydraulic force of water and sludge that enters the thickener. In the lower portion of the thickener is the sludge rake, which moves sludge to the hopper, where sludge is collected and compacted.
Fact Sheet: Gravity Thickening | US EPA
Fact Sheet: Gravity Thickening. Gravity thickening is the process by which biosolids are condensed to produce a concentrated solids product and a relatively solids-free supernatant. The biosolids technology fact sheet for gravity thickening provides: A description of gravity thickening. Applicability to wastewater treatment plants.
LAMELLA settler
a cylindrical shape sludge compartment. LS – Lamella separator The LS model consists of an independent Lamella separator with conical sludge hopper. The sludge is being removed by water pressure when a valve is opened. A rotating sludge scraper in the hopper is available as an option. Lamella LS standard version Lamella LS with sludge …
Sludge treatment: digestors, thickeners
ISP Sludge Thickeners are used to thicken sludge from settling tanks in both municipal and industrial purification plants. ... Belt filter thickener can be used instead of conventional gravity thickening tanks to increase the dry solids content of the slurries. ... Prices are indicative only and may vary by country, with changes to the cost of ...
Inclined Plate Settler
The LTC model consists of a number of lamella plate packs installed in a conventional cylindrical thickener tank with a standard centre-drive rake mechanism to remove the thickened sludge. For higher thickening rates and greater sludge buffer capacity, now offer a specially modified system. The compact prefabricated lamella packs of the ...
Inclined plate settlers
In comparison to conventional thickening and clarifying equipment, the inclined plate settlers (IPS) provide up to a 85% smaller plant footprint. ... The robust design comes from the heavy duty construction of the tank, sludge hopper and inclined plate pack. The wide density of inclined plates are specifically designed for no short ...
Gravity Thickening: Gravity Thickeners
The RS Thickener mechanism consists of two fabricated steel arms supported from a central rotating drive cage. The cage is suspended from an enclosed spur gear drive turntable unit which, in turn, is supported on …
(PDF) Understanding the Thickening Process
The thickening process is the primary method of producing high solids slurries for the minerals industry. Thickener outputs can accommodate a range of tailings disposal options from low yield ...
Using Suspended Solids Measurement in Dewatering of …
The amount of time wastewater and sludge remain in the tank depends on the depth of the tank, the influent rate, surface overflow rate, and the required solids concentration of the sludge. Effluent For a primary clarifier, the underflow solids concentration can be less (0.5% to 1.5% solids) if the sludge is intended for thickening.
Lamella Plate Clarifier
hopper at the bottom of the unit. In the hopper, the sludge is thickened prior to discharge through the sludge outlet (brown arrow). 3. The clarified liquid leaves the plate assembly through openings at the top and is discharged into collection channels leading to the clarified water outlet (blue arrow). 4. The openings at the top of the plate ...
Innovative sludge handling through pelletization/thickening
For volume reduction, thickening and dewatering is usually practiced. Sludge thickening is particularly important, because it influences the reliability and performance, of the entire sludge treatment system. Over the past decade or so, sludge thickening has become more difficult Noda, 1982, Tanaka, 1990.
Modern high rate thickener for Sludge Separation
High Rate Mining Thickener Price $14,800.00 - $14,999.00. Min Order: 1 set. 10 yrs CN Supplier . 0.0 /5 · 0 reviews · "Good service" ... the great variety of suppliers will cushion the stress by offering competitive high rate thickener options. These sludge separating machines have good designs, reliable technology, and better waste control ...
TECHNICAL, ENVIRONMENTAL, AND ECONOMIC …
activated sludge thickening technologies. The review first considered the mechanisms at work in conventional thickening technologies such as for gravity belt thickeners. Following this, a review of centrifugal thickening technologies was conducted. Next, a review of several non-conventional technologies was completed to consider