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Thickener clarifier design calculation

  • How to Size a Thickener - Mineral Processing & Metallurgy

    Mar 08, 2016· Thickener area required is then cal­culated by applying above determined data in the following formula: A = 1.333 (F D)/R A = Thickener area in square feet per ton of dry solids thickened in 24 hours. F = Initial density (Parts Water to Sol­ids by weight).

  • Bridge-Supported Mechanisms for Tank Diameters to 50 Feet

    Component clarifier feedwells are usually sized at 25% of the basin diameter. Thickener feedwells should be sized for a liquid velocity of 4 ft. per minute. Floor Slope Standard floor slopes are 1:12 for clarifiers and 2.75:12 for thickeners. Launders Inboard and outboard arrange-ments are available and either may be utilized. Tank Construction

  • Batch sedimentation, clarifiers - SlideShare

    Circular Clarifiers Thickeners and clarifiers use slowly rotating rake arms to separate solid particulate. A liquid feed with suspended solids is fed into a tank with a diameter of 5 to 500 feet. As the particles settle, angled rake arms move the concentrated slurry toward the center of the tank, where it is removed.

  • Wastewater Clarifier Performance

    Oct 24, 2016· Primary and Secondary Clarifiers This page provides information on the expected performance of primary and secondary clarifiers. Removal efficiencies, detention times, and other parameters have been summarized to provide a handy reference. Of course, every wastewater plant is different, with potentially vast differences between municipal and industrial wastewater systems.

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

    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. 2 /tpd) or the rise rate, depending if solids loading is the dominant (eg.

  • 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.

  • How to Design Clarifier for Primary Treatment of Water

    The Design of Clarifier mechanism is very important role in primary treatment of any water treatment plant. is the amount of water leaving the settling tank per linear foot of water. The result of this calculation can be compared with design. Normally, weir overflow rates of 10,000 to 20,000 gal/day/ft are used in the design of a settling

  • Steady-state, control, and capacity calculations for

    Steady-state, control, and capacity calculations for flocculated suspensions in clarifierthickeners state, design, and control calculations for the CT model that are based on the analysis of Section 4. In particular, in Section 6.1 we present three examples of each of the

  • Biosolids Technology Fact Sheet Gravity Thickening

    Therefore, the tank design must ensure a smooth, continuous flow of liquid at the center well, the weirs, and the solids removal point. Gravity thickener designs usually include circular tanks, 3-4 m (10-13 ft) deep and up to 25 m (82 ft) in diameter. The dimensions

  • (PDF) Secondary Clarifier Design Yusuf özdemir

    Secondary Clarifier Design. Yusuf özdemir. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. READ PAPER. Secondary Clarifier Design. Download. Secondary Clarifier Design.


    With more than a thousand operating thickeners - our drive design is well known to be highly reliable and can be operated hydraulically or electrically. As process plants seldom include standby thickeners, we focus on providing the best design to ensure the client highest availability.


    Source: Guideline and Manual for Planning and Design in Japan, JSWA, 2009 6.2 HYDRAULICS OF SLUDGE PIPELINES 6.2.1 Sludge Piping Sludge piping can be by gravity or by pumping. For example, when primary sludge is drawn from clarifiers, it is sometimes by gravity and sometimes by direct suction using pumps. The friction loss

  • Circular Clarifiers & Thickeners Monroe Environmental

    Monroe Environmental Circular Thickeners are a crucial step between upstream process clarifiers/separators and downstream de-watering and sludge conditioning processes. A well designed thickener provides storage and equalization, and reduces the costs associated with de-watering.

  • Thickener Design Calculations - Universitas Semarang

    thickener design calculations chinacoat. senior chemistry extended experimental investigations. iron ore pelletization packing machines electrostatic. icml international council for machinery lubrication. sleeve bearing lubrication machinery lubrication. handbook of mechanical engineering calculations

  • thickener design calculations - BARROCO RESTAURANTE

    Nov 18, 2019· Design Procedure The thickener area is also required for this calculation. Guess the thickener area for the first iteration. Several iterations of area may be required to achieve a practical thickener size and pumping rate. For a circular thickener with a 15.24 m 50 f t dia.: A= Pi r 2 = 182.4 m 2 7

  • MIP Process Technologies Thickening and Clarification

    MIP Design Considerations Thickeners and clarifiers are operating in the minerals processing, chemical water treatment, industrial and effluent treatment throughout the world. In addition to this existing technology, MIP Process Technologies (Pty) Limited

  • PRACTICAL DESIGN CRITERIA - Final Clarifiers Design and

    PRACTICAL DESIGN CRITERIA. In the pre-modelling era, engineers developed various complex criteria, which, as they believed, describe the state and the maximum acceptable loading of clarifiers.In addition, they developed geometrical and other recommendations. Some of the many criteria proposed and contained in technical standards and guidelines are presented and reviewed in this chapter.

  • Clarifier Sizing Spreadsheet - HydroFlo Tech

    Below is a link to a clarifier sizing spreadsheet developed by HydroFlo Tech. By inputting the major design criteria, you can solve for the clarifier projected surface area and overall clarifier volume. The spreadsheet operates on Microsoft Excel 2003 or later. clarifier sizing calculations. Below is a sample shot of the spreadsheet.

  • thickeners & clarifiers - MIP Process Corp

    available. Thickener tanks, rakes and feedwells 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 to operate continuously for 24 hours per day. Process selections are

  • Thickeners and Clarifiers - TAKRAF

    We design, fabricate and supply a comprehensive range of thickeners and clarifiers; Our thickener range includes high-rate thickeners, high-density thickeners, paste thickeners and conventional thickeners and offers designs up to 100m in diameter, catering for a variety of applications in various industries; Our clarifier range includes pinned

  • Inclined Plate Clarifier (Parallel Plate, Lamella

    customer clarifier sizing chart total cubic feet-cubic feet needed plate height xxxx-10-1-st packs per chamber number of influent chambers number of influent packs number of separation packs effective cubic feet of down flow effective cubic feet of up flow model# xxxx-10-2-st xxxx-08-1-st xxxx-08-2-st xxxx-06-1-st xxxx-06-2-st xxxx-04-1-st xxxx

  • Solid Liquid Separation Thickening - ScienceDirect

    Jan 01, 2016· Thickeners are essentially clarifiers producing a clearer over flow. The design considerations are based on the settling rates of the slowest settling particles and conditions for minimum disturbance of the medium (water) through which the solid particles are allowed to settle.

  • Metropolitan Waterworks Authority (Thailand)

    10 Calculation Diameter Solid Contact Clarifier xwaterdepth xVolume π 4 20:44/27/2/2007 3/4 Design Clarifier Tank(Solid Contact)/Hopper inside&outside Total Volume = Volume inside Hopper + Volume outside Hopper = 355 m3 Diameter Solid Contact Clarifier = = 9.69468 m


    order to provide a design water level which is lower than the top of the tank. Hopper Arrangement: Several options are available for sludge storage. The standard arrangement is a four sided, inverted pyramid, hopper bottom. A second option is to mount the lamella on top of a mechanical thickener in order to achieve a higher

  • Design and Operation of Final Clarifiers

    design,although Types I,II,and IV settling may also occur to a limited extent. Functions of a Clarifier The final clarifier must perform two pri-mary functions:clarification and thickening. Clarification is the separation ofsolids from the liquid stream to produce a clarified

  • Tanks, Thickeners & Clarifiers CDMS Consulting Engineers

    CDMS Consulting Engineers (CDMS) has a team that is highly experienced in the specification, design and detailing of tanks, thickeners, and clarifiers. Working to an international quality management standard (ISO 9001-2015) we are able to offer our services to the highest level of quality control which can be difficult to find elsewhere.

  • Thickening - Resource Book

    Unlike conventional thickeners, high rate thickeners must use flocculants. The basic design of a high rate thickener is below. High rate thickener feed wells are designed to disperse flocculants thoroughly into the feed end to admit the flocculated slurry into the settling zone of the thickener without destruction of the newly formed floccules.

  • thickener design calculations - BARROCO RESTAURANTE

    Design Procedure The thickener area is also required for this calculation. Guess the thickener area for the first iteration. Several iterations of area may be required to achieve a practical thickener size and pumping rate. For a circular thickener with a 15.24 m 50 f t dia.: A= Pi r 2 = 182.4 m 2 7

  • CHAPTER 12 Sludge Processing and Disposal

    The thickener underflow is generally used as a source of water for the air-charging units, although primary tank effluent or plant effluent may also be used. Design Sizing The engineer shall provide the design basis for sizing the units and for the support calculation. Design sizing should be based on rational


    Slurry calculations Pulp SG %w/w solids Solids and slurry flow Slurry dilution Back calculation of solid SG Assessment Sizing calculations Thickener sizing Clarifier sizing Analysing dynamic data Dynamic data examples Analysing cylinder data Sizing thickener from static data

  • Thickener - EKCP

    EIMCO-K.C.P. Thickeners are manufactured for heavy duty Concentrates, tailings and fine application and three basic configurations: Bridge mounted, Column mounted and Traction type and sizes up to 500 feet diameter are available. Optional lifting devices for either design offer additional operational flexibility. EIMCO KCP HIGH RATE THICKENERS

  • Solids Contact and Flocculating Clarifiers for Water

    The simple design provides for coagulation, flocculation, solids recirculation, clarification and positive sludge removal in a single basin. This eliminates the need existing thickener or clarifier. Many upgrades can pay for themselves in a matter of months and help increase capacity as

  • Clarifier Calculations - Michigan

    Calculate the Surface Overflow Rate for a clarifier that has a diameter of 60 ft, and receives an influent flow of 1.65 MGD. 1,650,000 gallons per day 2826 ft2 SOR, gpd/ft2 = = 584 gpd/ Clarifier Loading Hydraulic Loading - Surface Overflow Rate (SOR) Practice 1.

  • A Critical Review of Thickener Design Methods t

    The design method consists in measuring, in the labo­ ratory, the initial settling rate of a suspension with the concentration of the feed to the thickener and applying equation (6) to find the area S of the thickener. As we have already discussed, the concentration in the zone II of the thickener

  • Measuring Settling Rates and Calculating Thickener Capacity

    The required depth of the thickener may be ascertained by computing the capacity of the thickening zone to contain a supply of solids equal to the total capacity of the tank for the number of hours required to thicken the pulp to the density required in the discharge, and to this depth adding an allowance for the lost space due to the pitch of the drag in the thickener; also from 1½ to 2½ ft. for depth of feed and a further allowance for storage

  • Conventional Thickeners - Solid Liquid Separation

    Drive heads for both bridge and column type thickeners may be driven by up to 4 electric motors of hi-slip design which can reach 5-8 percent slip without loss of power nor overheating. This special design is required to ensure that the load on the main gear is balanced so that each primary reducer, and subsequently the entire reduction train


    Aerobic Digestion Design SRT at 20˚C = 40 days; SRT at 15˚C = 60 days (503) Volatile solids loading = 0.1 to 0.3 lb/(ft3-day) Oxygen requirements = 2.3 lb O 2 /lb VSS destroyed Energy requirements for mixing = 100 to 200 hp/mil gal Dissolved oxygen residual = 1 to 2 mg/L Reduction of VSS = 38 to 50%


    thickener design and operation (e.g. feed measurement, dilution c ontrol, feedwell design) become more widely adopted. In th e shorter term, flocculant addition po ints will be appropriately


    An appropriate gravity clarifier design involves taking account of the potential overloads and septic condition development. To avoid possible odors, the thickener is often covered with a sealed housing; this can be fixed, with masonry, or removable, being more advisable because it facilitates maintenance.


    important consideration in the design of secondary clarifiers. Presently, the area requirements of secondary clarifiers are based on a surface loading rate of approximately 800 gal/ft2/day. This, how-ever, is not enough for sufficient thickening of mixed liquer having sludge volume index in the rage of 200-500 ml/gm. Thus, the calcula-

  • Sludge Thickeners Hoffland Environmental, Inc (936

    Sludge Thickeners The HEI Sludge Thickener is an efficient method to gravity concentrate and decant waste sludge. Liquid sludge pumped from a clarifier will have a solids content of 0.5% from cone bottom clarifiers to 2%-4% from the rake bottom clarifiers. The sludge thickener must have sufficient capacity to accumulate and thicken the sludge between filter press cycles.

  • Clean Water and Air: Clarifier Drive Torque: Selection and

    May 25, 2012· In the circular clarifier field, the types of drives vary with each equipment supplier. The basic arrangements are: (1) the half bridge design where the drive rests on the center column; (2) the full bridge design where the drive rests on the bridge spanning the tank.

  • A Critical Review of Thickener Design Methods t

    The design method consists in measuring, in the labo­ ratory, the initial settling rate of a suspension with the concentration of the feed to the thickener and applying equation (6) to find the area S of the thickener. As we have already discussed, the concentration in the zone II of the thickener

  • EvenFlo® Feedwell - WesTech Engineering, Inc.

    The thickener or clarifier is the major piece of equipment used to recover water in mineral and industrial processes. The one thing all thickeners have in common, the feedwell, is the core of every thickeners performance. A thickener relies on a feedwell for even distribution of solids and flocculation of suspended particles.

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