{"id":4728,"date":"2022-08-22T02:40:10","date_gmt":"2022-08-21T17:40:10","guid":{"rendered":"https:\/\/ar-korea.com\/?p=4728"},"modified":"2025-11-03T20:07:03","modified_gmt":"2025-11-03T11:07:03","slug":"decanter-centrifuge-structure-and-principle","status":"publish","type":"post","link":"https:\/\/ar-korea.com\/en\/blog\/%ed%83%88%ec%88%98%ea%b8%b0-%ec%84%a0%ec%a0%95%eb%b2%95\/%eb%8d%b0%ec%b9%b8%ed%83%80-%ec%9b%90%ec%8b%ac%eb%b6%84%eb%a6%ac%ea%b8%b0-%ea%b5%ac%ec%a1%b0%ec%99%80-%ec%9b%90%eb%a6%ac\/","title":{"rendered":"[ARK \uc9c0\uc2dd\ubc31\uacfc] \uc6d0\uc2ec\ubd84\ub9ac\uae30, \uc6d0\uc2ec\ud0c8\uc218\uae30, \uc6d0\uc2ec\ub18d\ucd95\uae30\uc758 \uc6a9\uc5b4\ud574\uc124"},"content":{"rendered":"
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What is a decanter centrifuge?<\/p>\n\n\n\n

This is an environmental column provided by ARK, a series of contents that reviews various terms and concepts that are easy to forget even for those in charge of environmental facilities and provides basic knowledge of environmental engineering to the general public.<\/p>\n\n\n\n

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As the domestic pioneer of decanter centrifuges and the only company in Vietnam that develops its own decanter centrifuges, we would like to clarify some confusing terms in this first installment.<\/p>\n\n\n\n

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Let's get started, shall we?<\/p>\n\n\n\n

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Understanding centrifuge terminology<\/strong><\/h1>\n\n\n\n
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Centrifugation, centrifugal dehydration, centrifugal concentration, what the heck?<\/p>\nIs a centrifuge a top-level concept, and if so, how are dehydrators and concentrators categorized?<\/cite><\/blockquote>\n\n\n\n

First, we need to unpack and understand the word centrifugal. <\/p>\n\n\n\n

In physics terms, centrifugal force is the force in a rotating system that is equal in magnitude and opposite in direction to the \u2018real\" centripetal force. However, the two are not an action-reaction relationship. The easiest way to understand this is to think of a washing machine, which uses centrifugal force to dehydrate water by rotational motion.<\/p>\n\n\n\n

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General definition of centrifugation :<\/strong><\/h3>\n\n\n\n

Separate solid-liquid \/ liquid-liquid suspensions suspended solids. 1 and 2 are equivalent.<\/p>\n\n\n\n

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Solid-liquid
Liquid-liquid
\u2462 Solid-Gas
\u2463 Liquid-Gas
\u2464 Gas-Gas<\/p>\n<\/blockquote>\n\n\n\n

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Centrifuge = centrifugal concentrator (for sedimentation) \/ decanter centrifuge (for dehydration)<\/strong><\/h3>\n\n\n\n

Centrifuge is the most comprehensive concept and is divided into concentrator for settling purpose and dehydrator for dehydration purpose according to the purpose, and is divided into rotary and continuous type according to the operating mechanism, and is further classified into separator plate type, basket type, direct through type, and decanter type. ARK's decanter centrifuge is a decanter type and is named Decanter Centrifuge in English.<\/p>\n\n\n\n

\"Types<\/figure>\n\n\n\n

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Recent centrifuge tendencies<\/strong><\/h3>\n\n\n\n

\ucd5c\uadfc \uc6d0\uc2ec\ubd84\ub9ac\uae30\ub294 \ub300\uaddc\ubaa8 \ud50c\ub79c\ud2b8\uc640 \ub300\uae30\uc5c5 \uc124\ube44\uc5d0\ub3c4 \uc801\uc6a9\uac00\ub2a5\ud558\uba70 \uce68\uc804\ubb3c \ubc30\ucd9c\uc774 \uc26c\uc6b4 ‘\ub514\ucf04\ud130\ud615’\uacfc \ub18d\ucd95\uae30\uc6a9\uc73c\ub85c \uac1c\ubc1c\ub41c \uc9c1\ud1b5\ud615\uc774 \uac00\uc7a5 \ub9ce\uc774 \uc4f0\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

What is a decanter? A tool for filtering sediment that has a narrow, elongated mouth and a wide interior.<\/p>\n\n\n\n

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\"Decanter<\/figure>\n\n\n\n

Dewatering and concentrating machines used in various industries can be categorized into chartered belt presses, filter presses, and next-generation Screw-press<\/a>, And then you have the most modern centrifuges. In the industry, wherever you have sludge on site, you're going to have to dewater it, and it's going to be expensive, so you're going to have to make a choice between doing it the traditional way and doing it with labor, or you're going to do it more efficiently and justify the initial investment.<\/p>\n\n\n\n

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However, in recent years, especially in foreign countries, decanter centrifuges have been preferred due to their high efficiency. Even if the investment cost is higher than other dehydrators, decanter centrifuges are being replaced. This is due to its high efficiency and wide range of applications. There is also a trend toward fewer water treatment workers and safety concerns. This is because the sludge treatment process requires a lot of manpower, and if there are many post-treatment processes, there is also a lot of labor waste.<\/p>\n\n\n\n

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Centrifugal Effect G Interpreted by Stokes' Sedimentation Theory<\/strong><\/h3>\n\n\n\n

A good decanter centrifuge or separator is one that has a high centrifugal effectiveness, G. Of course, it has to be mechanically sound, but a good centrifugal effect should be able to concentrate and separate well.<\/p>\n\n\n\n

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\u200b<\/p>\n\n\n\n

Here is a formula for Stokes' sedimentation theory that appears on the Water Environment Technician exam.<\/p>\n\n\n\n

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What is Centrifugal Effect G?<\/p>\n\n\n\n

Where Vc is the terminal settling velocity (single particle of sludge) and G is the ratio of the artificial centrifugal acceleration due to rotational motion to the acceleration of gravity (g).<\/p>\n\n\n\n

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Vc (the settling velocity in a centrifugal field) is redefined as Vg (the settling velocity in a gravitational field), which means that even particles that cannot settle in gravity can be separated quickly by maintaining G times the gravitational field.<\/p>\n\n\n\n

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Industries where centrifuges are used<\/strong><\/h1>\n\n\n\n

Centrifuges come in many flavors, including decanter centrifuges and straight-through centrifuges, but what are they used for?<\/h3>\n\n\n\n

Centrifuges have a very broad spectrum of possible applications compared to other dehydrators. Roughly, the applications are categorized as follows. Dewatering, to remove water, and concentration, to concentrate and remove specific substances.<\/p>\n\n\n\n

Let's take a look at the different applications of decanter centrifuges in different industries.<\/p>\n\n\n\n

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