### Beginners Guide to ThickenersOutotec

In high rate thickener HRT designs the rise rate or solids loading will dictate the required tank diameter for any given throughput. In high compression HCT and paste PT applications the bed depth or the mass of solids in the thickener must also be selected to ensure the desired underflow density from the thickener is achieved.

Inquire Now### Sizing Tank Overflow LineIndustrial Professionals

Sep 05, 1983· Sizing Tank Overflow Lineposted in Industrial Professionals: I am working on sizing an overflow line for a tank and while I believe I have an acceptable solution, this is the first calculation of this nature that I have performed and I want to ensure that I have not overlooked some critical aspect. The overflow line is inside the tank and has a syphon break, which is exposed to atmospheric

Inquire Now### 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

Inquire Now### How to Size a ThickenerMineral Processing & Metallurgy

Normally a 25 per cent factor of safety is allowed in determining the thickener area size. Thus, in the above case, 8.87 largest of three figures plus 25 per cent factor of safety, equals 11.09 square feet area required per ton of dry solids fed to the thickener per 24 hours.

Inquire Now### UNVEILING THE MYTH OF HIGH CAPACITY THICKENERS

Today the definitions of High Capacity or High Rate Thickeners is used to describe equipment, where mineral particles are thoroughly mixed with flocculant within a feedwell and then injected uniformly into the hindered settling zone of the thickener with largely radial motion. Dorr Oliver High Capacity Thickener with High Capacity Clarifier feed.

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The saying, The most effective and efficient mitigation or elimination of risk is achieved at the earliest juncture and at the most fundamental level, can be applied to practically any discipline and any situation, including process safety and pressurerelief system design.In any project, there is the least amount of risk e.g., financial, safety, etc. and the greatest amount of control

Inquire Now### Use a V Notch Weir to Measure Open Channel Flow Rate

The v notch weir is widely used to measure open channel flow rate. It is especially good for measuring a low flow rate, because the area of flow through the v notch becomes quite small while the head over the v notch is still a measurable value. When a v notch weir is used to meter flow, the weir equation Q = 2.49 H^2.48 can be used to calculate Q, the flow rate over the weir and through the

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Inquire Now### Distillation Column Tray Selection & Sizing1

The numbers of flowpaths of liquid on tray are 1, 2, 3 or 4 as per liquid capacity requirement of column. From a capacity viewpoint, a liquid rate greater than 6 gpm / inch of weir weir loading, is the rate at which a higher number of flow paths should be considered. The maximum allowable weir loading is 13 gpm/in of weir length.

Inquire Now### Calculate a Settling Tank's CapacityThickener

Stirring would not increase the capacity of the thickener beyond the natural capacity for discharging pulp of the consistency at which the channels have just closed; on the contrary, the capacity should be slightly lower, due to the fact that the D in Mr. Mishlers formula No. 3 becomes less and A, or required area, consequently becomes greater.

Inquire Now### Steadystate, control, and capacity calculations for

The notion of high rate thickener stems from the observation that this mode usually permits to handle a higher rate of feed solids than the conventional, and that the capacitylimiting hindered settling zone is eliminat ed.Weshallseeinthispaper,however,thatthequestion whethertheattainablesolidsthroughputinagivenunitis really enhanced by operation in highrate mode

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SUMMARY OF KEY WASTEWATER MATH FORMULASContinued Sedimentation Tanks and Clarifiers: 5. Solids Loading =Solids into Clarifier, lbs/dayRate, lbs/day/sq. ft.Surface Area, sq. ft.Design Rate: Primary Clarifiers: Not a design consideration. 2nd. Clarifiers: 1230 lbs/day/sq. ft. 6.

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Start studying Wastewater: Exam 3: Biosolids/sludge & Land Application. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

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Concrete Strength al\ne for an 10 thick wall with #[email protected] and 2.5 clear to strength steel will only reduce the nominal moment capacity of the section from 136.68 to 135.66 inchkips \ if the concrete strength decreased from 3.5 to 3.0 ksi.

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For this application 3341 m3/day/m28001,000 gal/day/ft2 is considered typical; the range for typical overflow rates is 1673 4001,800 in the same units 1. The overflow rate in the previous batch flux curve illustration is: Rise rate = wastewater flow rate/clarifier area = 23.4 m3/day/m2570 gal/day/ft2.

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Start studying Water Treatment Concepts & Terms. Learn vocabulary, terms, and more with flashcards, games, and other study tools.High rate clarification. tube+plate, ballasted, dissovled aird10, d60, d90, used for headloss/backwashing calcs. Uniformity Coefficient. ratio of d60 to d10, as UC increases, uniformity dec. Filter

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For 2 stage, just 1 new smaller size Static, fermenter/thickener needed, it has 40 dia. and 16 depth. The 2stage sys. also need 2new CMF, 350 K MG each. For UFAT sys, a same size fermenter/thickener will be needed as the 2nd fermenter/thickener. 2 new primary

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FRCs belt filter press systems cleanly manage the entire process through automated stages of chemical preparation, gravity thickening, and belt pressing. Constructed of stainless steel and highgrade plastics, belt filter presses are extremely resistant to fouling and corrosion.

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The surplus waste sludge from SBR basins will be pumped to the sludge thickener. Two thickener tanks will receive the sludge, which contains large volumes of water. Thickening of sludge is used to concentrate the solids and reduce the volume. The thickened sludge requires less tank capacity and chemical dosage for stabilization and smaller

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Calculation of Oxygen Requirement Calculate oxygen requirement of a completemix activated sludge process treating domestic wastewater having flowrate of 0.25 m 3 /sec. BOD 5 concentration of settled wastewater is 250 mg/L. The effluent soluble BOD 5 is 6.2 mg/L. Increase in the mass of MLVSS is 1,646 kg/day. Assume that the temperature is 20 °C and the conversion factor, BOD 5 / BOD L

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Start studying Water Treatment Concepts & Terms. Learn vocabulary, terms, and more with flashcards, games, and other study tools.High rate clarification. tube+plate, ballasted, dissovled aird10, d60, d90, used for headloss/backwashing calcs. Uniformity Coefficient. ratio of d60 to d10, as UC increases, uniformity dec. Filter

Inquire Now### Design ExamplesDokuz Eylül University

Calculation of Oxygen Requirement Calculate oxygen requirement of a completemix activated sludge process treating domestic wastewater having flowrate of 0.25 m 3 /sec. BOD 5 concentration of settled wastewater is 250 mg/L. The effluent soluble BOD 5 is 6.2 mg/L. Increase in the mass of MLVSS is 1,646 kg/day. Assume that the temperature is 20 °C and the conversion factor, BOD 5 / BOD L

Inquire Now### Distillation Column Tray Selection & Sizing1

The numbers of flowpaths of liquid on tray are 1, 2, 3 or 4 as per liquid capacity requirement of column. From a capacity viewpoint, a liquid rate greater than 6 gpm / inch of weir weir loading, is the rate at which a higher number of flow paths should be considered. The maximum allowable weir loading is 13 gpm/in of weir length.

Inquire Now### Sharp Crested Weirs for Open Channel Flow Measurement

SharpCrested Weirs for Open Channel Flow Mesurement Harlan H. Bengtson, PhD, P.E. COURSE CONTENT 1. Introduction A weir is basically an obstruction in an open channel flow path. Weirs are commonly used for measurement of open channel flow rate. A weir functions by causing water to rise above the obstruction in order to flow over it. The height of

Inquire Now### The High Rate ThickenerSolid Liquid Separation

Description. The HighRate thickeners became popular in the mid 1980's and are relatively newcomers to the sedimentation line of equipment. As already discussed previously Thickeners are a major component in a plant layout and occupy large spaces which may be saved by introducing highrate machines. Furthermore, they are normally positioned far away from the center of the plant so to allow

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xmlns=" viewBox="0 0 16 16" enablebackground="new 0 0 16 16" width="16" height="40">Lamina ThickenersInquire Now ### Avoid PressureRelief System PitfallsAIChE

The saying, The most effective and efficient mitigation or elimination of risk is achieved at the earliest juncture and at the most fundamental level, can be applied to practically any discipline and any situation, including process safety and pressurerelief system design.In any project, there is the least amount of risk e.g., financial, safety, etc. and the greatest amount of control

Inquire Now### Primary Sludge Fermentation for Reliable Biological

For 2 stage, just 1 new smaller size Static, fermenter/thickener needed, it has 40 dia. and 16 depth. The 2stage sys. also need 2new CMF, 350 K MG each. For UFAT sys, a same size fermenter/thickener will be needed as the 2nd fermenter/thickener. 2 new primary

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