Laboratory testing with a high rate thickener has shown the importance of feed solids control to thickener and flocculant performance (Table 4). In the preoxidation as well as CCD thickeners, testing has demonstrated that an optimum feed solids level can be attained which will maximize thickener performance while minimizing flocculant consumption.
Feedwells and flocculant dosing control have a significant influence on thickener performance. Flocculation is controlled by varying the flocculant pump speed to achieve a consistent flocculant dosage rate per ton of dry solids feed. Care should be taken to ensure that flocculant dilution is maintained with changes in flocculant dosing rate.
Jan 26, 2015· Flocculants are typically introduced either to the slurry-water pipe feeding the thickener, to a feed tank before the thickener, to the centerwell or a combination of these addition points. Where flocculant is optimally dosed is typically determined by plant evaluation and varies from operation to operation and is influenced by solids substrate
Sep 13, 2013· The feed slurry enters the feed well tangentially through the feed pipe. The feed slurry is pumped or fed by gravity to the thickener and shall have the energy to aid mixing of flocculant
Flocculants are categorized as anionic, nonionic or cationic and therefore affected by pulp pH. Basic thickener operation will have you understand the simple electrics of water. For lack of proper testing, you will need to buy a floc that fits your chemistry or modify it using lime.
ANDRITZ thickening and clarification solutions are designed to achieve the highest production rates without compromising efficiency. For all counter-current decantation (CCD) plants: The new and improved ANDRITZ inter-stage mixing and dilution system for CCD circuits helps to reduce the footprint and consequently cut CAPEX while maintaining low operating costs.
The feed well is designed to allow the feed to enter the conventional thickener with minimum turbulence and uniform distribution while dissipating most of its kinetic energy. Feed slurry enters the feed well, which is usually located in the centre of the thickener, through a pipe
Filtaquip is the leading provider of filtration technology to the global market. We support you in all fields by supplying a range of specialized equipment for the electrowinning and dewatering industries, including conventional rake thickeners, vertical paste thickeners, flocculant plants, filter presses and specialised slurry pumps to make a complete dewatering system, as well as
This maximizes flocculant adsorption, eliminates the possibility of coarse/fines segregation, and ensures all particles are aggregated by the flocculant. Efficient operation is maintained in this upper zone over varying feed rates. The lower zone promotes gentle mixing for continued aggregate growth, with the option for secondary flocculant dosing.
Monroe Environmental builds Primary and Secondary Circular Clarifiers for industrial and municipal wastewater treatment, as well as Flocculating Clarifiers and Solids Contact Clarifiers for clean water or potable water applications. Our experienced staff will provide high efficiency, low maintenance systems that will provide the highest return on investment.
Each thickener should have a dedicated feed pump of the progressive cavity type. Desludging can be initiated by sludge blanket level and terminated after a pre-set time, or when the solids concentration in the discharge measured in the outlet pipe falls to a pre-set value.
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.
The Feed Pipe. Thickeners are almost always operating on slurries in the 3rd category of mass subsidence and hindered settling so high feed solids concentration yields slow settling rates and vice versa. On the other hand slurries in the 1st category of free and unhindered settling exhibit high settling rates of the solids in the suspension.
Products and Services Thickening and Clarification During thickener operation, feed enters the feedwell, via a feed pipe or open launder. In order to promote settling, it is increasing to dissipate this energy. In some cases, flocculants or coagulants are added to the feed to agglomerate particles and improve settling. Feed dilution may
LBM undertakes flocculant testing and specification with the best available technology. Testing equipment includes a flocculant pipe reactor that enables us not only to recommend the flocculant type but also the number and position of flocculant dosing points. LBM also tests the effect of variations in thickener feed rate.
Jun 16, 2011· Feeding your thickener. June 16, Feed material characteristics at the site changed and subsequently thickener performance declined. Thickener flocculant dose
Thickener Operation During thickener operation, feed enters the feedwell, via a feed pipe or open launder. In order to promote settling, it is increasing to dissipate this energy. In some cases, flocculants or coagulants are added to the feed to agglomerate particles and improve settling. Feed
Isodry™ thickeners are available as part of a wide range of solutions, from standalone units up to full solutions with hydrocyclones, filter presses and decanter centrifuges. Intelligent automation can be added to optimise the thickener’s performance in applications with a variable feed solid percentage and variable flow rate.
anionic polymer manufacturer/supplier, China anionic polymer manufacturer & factory list, find qualified Chinese anionic polymer manufacturers, suppliers, factories, exporters & wholesalers quickly on Made-in-China.
A wide variety of pipe flocculator options are available to you, There are 49 suppliers who sells pipe flocculator on Alibaba, mainly located in Asia. The top countries of suppliers are India, China, from which the percentage of pipe flocculator supply is 2%, 95% respectively.
Pulp, paste and putty: thickeners and flocculants for high density underflows part two. By Peter Bartsch MAusIMM(CP), Principal Metallurgist, Nyrstar NV and Richard Williams MAusIMM, Regional Manager, McLanahan Corp Stable feed, flocculation and hence discharge flow are essential to maintaining reliable operation of all thickeners
Thickener Flocculant Control Valve Manufacturer MC . Thickener Flocculant Control Valve Manufacturer Advanced Thickener Control Outotec. In most thickeners’ it is possible to check the efficiency of flocculation through sample observation by sampling the flocculated slurry from the feed well. concentrator mill for sale in ireland Minevik
Thickeners: How they Operate. The most common solids-liquid (S/L) unit operation is thickening. A wide variety of thickeners are used including conventional, deep well, paste, high rate and clarifiers which is a thickener subclass used for removing solids from turbid or very low % solids waters.
Techniques and methodologies for improving thickener performance. The slurry feed and flocculant ente r at one end with Recent developments in techniques and methodologies for improving
flocculant manufacturer/supplier, China flocculant manufacturer & factory list, find qualified Chinese flocculant manufacturers, suppliers, factories, exporters & wholesalers quickly on Made-in-China.
Manufacturer of Solid Liquid Separation Equipment Thickener, Horizontal Vacuum Belt Filters, Linear Screens offered by Vmix Mineral Technologies Pvt. Ltd., Bengaluru, Karnataka.
Instrumentation and Control of Sedimentation Equipment Abstract Some of the process variables that are commonly monitored on a thickener are torque, rake height, bed level, bed pressure, feed rate and density, underflow rate and density, settling rate, and overflow turbidity. Many of these are easily measured, while some can be difficult.
Feed pulp enters thickener and is flocculated. The flocculated pulp enters an active setting zone at a controlled velocity in a horizontal direction.. The Enviro-Clear® Clarifier/Thickener represents a significant advance in the technology of liquid/solid separation. Deeper feedwell Submerged feedwell discharge Feed pipe submerged
available. Thickener tanks, rakes and feedwell’s are custom designed, based on the feed conditions and raking capacity. A retrofit service is offered to enhance performance of existing thickeners and clarifiers. tHiCkener design MIP Thickeners and Clarifiers are designed
program were the introduction of the revolutionary Radflow™ feedwell and the associated ETAQ™ feed dilution system. The historical industry standard feedwell, used by all major suppliers in the industry, is a cylindrical shaped centre well with either tangential inflow, vertical off-centre feed
Another important feature of the floc tubes is that they are constructed from PVC pipe with no internal parts. Therefore, they are virtually clog-free, in contrast with other manufacturers’ floc tubes featuring static mixers. This can be very important in industries which may have large solids, rags, gloves, or other debris in the wastewater.
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