How Primary Clarifiers Work

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This 3D animated video shows how a circular primary clarifier works. We look at all of the main components of the clarifier, how it works and the factors that influence its performance.
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▶️Introduction
Primary clarifiers are used to complete the process of sedimentation. Sedimentation is the process of separating suspended solids from a liquid. Separation without mechanical means can be completed within a sedimentation basin or settling tank, separation using mechanical means is completed using a clarifier.
Clarifiers are used in many water treatment facilities, as well as in the mining, paper and pulp, and sanitation industries. Clarifiers can be of the rectangular, sloped or circular design.
The purpose of the clarifier is to reduce the velocity of the influent in order to allow the suspended solids to separate from the liquid. Heavy solids are referred to as settleable solids and these accumulate on the bottom of the clarifier to form sludge. Lighter solids are referred to as floatable solids and these accumulate on the liquid surface to form scum.
Clarifiers have found widespread application because they are very effective and offer a good return on investment compared to other alternatives. A typical primary clarifier will separate between 90-95% of settleable solids from the liquid and 40-60% of suspended solids.
How It Works
Influent enters through the central pipe and is discharged to the centre of the clarifier. The influent velocity is reduced and settling occurs due to gravity. Heavier solids form sludge and are removed using rakes/ploughs. Lighter solids float on the top of the liquid and are removed by a scum skimmer. The cleaned liquid passes through a weir and into the effluent launder. The effluent is then extracted for direct discharge or further treatment.
Sources:
By 19ceic3004 - Own work, CC BY-SA 3.0, commons.wikimedia.org/w/index.php?curid=29027554
eCompendium of sanitation systems and technologies: ecompendium.sswm.info/sanitation-technologies
Eawag: Swiss Federal Institute of Aquatic Science and Technology
Technical drawings: designport, Paolo Monaco, Zurich
See ecompendium.sswm.info/copyright
By User:Dantadd - Own work, CC BY-SA 2.5, commons.wikimedia.org/w/index.php?curid=1909908
#saVRee #PowerEngineering #IndustrialEngineering

[@savree-3d]

Want to continue learning about engineering with videos like this one? Then visit: courses.savree.com/ Want to teach/instruct with the 3D models shown in this video? Then visit: savree.com/en

[@l3oovv]

Finally, I can understand whats going on in the primary clarifier. Thank you so much :

[@nareswarisalma8843]

its such amazing explanation about how a primary clarifier work with 3D animation. so it can be easily understood. thank you so much!

[@faisalhadi6298]

Clarifiers are very good 3D illustrations that are very helpful and educational about how the clarifier works. Thank you and keep educating

[@muhammadrafif7325]

Such an awesome explanation about primary clarifier works with amazing animation thx

[@jaywant2012]

3D visualization and clear communication made it excellent informative video.

[@rizkikurniawan9168]

This video make the explanation about clarifier very specific in step and its tools and interesting with 3d animation

[@surinmansukh3603]

These kind of 3D vedio along with excellent communication skills makes us to gain more knowledge about things.

[@Ihsan_almohsin]

Best explination about this topic. Thank you so much. I really recommend. You voice is so clear and simple. Also the animation is perfect.💙💙

[@ramyihtzhak]

Awesome and clear explanation! Everything is better when is backed-up with a 3D graphics. Thanks a lot.

[@jt9717]

Yet another very detailed but easy to follow explanation...thank u...

[@daraghasimi9217]

One of the best videos on primary settler or clarifier! thank you!

[@TonysStabindadark]

Thank you, glad I could find this on youtube

[@PhantomTroll1996]

U deserve an award sir for ur amazing explanation!

[@dennisfox8673]

Excellent tutorial! I drifted in to your channel watching other videos (which are great too), but figured I’d watch this one to see you explanation of a topic that I was already very familiar with-given that I work in municipal wastewater treatment. It’s nice to have my understanding confirmed, since I am neither a plant operator or a process engineer. One little tidbit of no real importance, but a fair degree of hilarity, is the name for the ramp that the scraper blade rides over just before the scum trough is the “scum beach!” I’ve always thought that’d be a good name for a punk rock album.

[@arunprasaathr9809]

Wonderful video and explanation. Thank you sir !!

[@YGhappyvirus]

environmental engineering college major here studying for finals.... this is fascinating, tysm!

[@adel6782]

An awesome explanation along with 3d graphics, thank you!!

[@metalpower18]

Now I know how these work! Great!

[@10Norbu1]

Very nice tutorial!!

[@sellaindriana120]

Best video and very well explained. Thank you

[@savree-3d]

Glad it was helpful!

[@Frostype]

Thank you very much for this thorough explanation!

[@junkycrunchy9837]

Nice Very helpful and explained in easiest possible but technical way. It would be great if you provide full animated video about complete water treatment plant.

[@TroyArn]

amazing animation. thank you.

[@mandeepkathuria768]

Wow. That explains the process and working quite well. Really appreciate it (Y)

[@anjarbapedal]

It is very useful, very well informed, thank you very much for sharing this incredible video.

[@hanniballectormd5569]

Could you do an entire model of a entire treatment plant? Some treatment plants don't have a primary clarifier only a secondary!This was so well done best I have seen so far thank you!

[@ricardoalva7052]

Excelent explanation. Thanks.

[@sayehparandoush2590]

That's lit! Thank you!

[@NguyenTran-qb6ls]

thank you so much. You're awesome, and the video is very helpful.

[@annisamega4730]

thank you so much, this video very helpful.

[@natebonenfant]

This has been a lot of help. Thank you!

[@dhruvanand3637]

Very well explained..best video!! 🙌

[@savree-3d]

Glad it was helpful!

[@sunithraju5029]

Really great work sir thank you thank you so much from India

[@catabaticanabatic3800]

Excellent video.

[@shadowandbosco]

very informative and interesting

[@IrfanAli-bs8nm]

great video. WHich sotware you used for making this 3d Model? AutoCAD or blender?

[@savree-3d]

We use Blender and SolidWorks.

[@sanjudileep268]

Excellent video. Can you tell me what software you are using to illustrate this model?

[@mirai9972]

Thank you so much that was really good and useful

[@sweeney821]

WOW great video for sure. Keep them coming.

[@savree-3d]

More to come! Please subscribe!

[@rudebwoyrenegade3726]

I needed this. Thank you

[@bikalkunwar5260]

Very well explained video. Does the water not flow through the sludge pit since it is at the bottom? Can u please explain this sludge pit process?

[@rumbidzai1929]

Thank you

[@MegaJonSA]

Very informative content. Keep it up!

[@mrbongbongy]

very good video

[@mind9528]

Yeah, That's it! This is the topic of the knowledge (and) I wanting to know 🙂 thanks! 👍

[@savree-3d]

Glad it was helpful!

[@sajjadhaydar]

A good video. Much appreciated.

[@abcbca431]

Hi John, An excellent video and explanation. A question though Why isnt 'I' shaped Weir used more commonly aren't they more efficient than v shaped Weir ?

[@Wakethefuckup67]

Kudos, best presentation I am yet to see for a primary clarifier ! Subscribed! 👍 PS. It is _"Retention time"_ as opposed to detention! in this case. Retention is the time of *_"passing"_* material / liquid through a given volume [Rt=V/Q], detention is more for batch processes, whereby a fixed volume of material / liquid is *_"detained"_* for a fixed period of time.

[@bugraozturk8114]

Great content! Thanks so much

[@l3oovv]

would you please make a similar video about the biological treatment/MBR , secondary treatment and advanced treatments as well? Thank you in advance.

[@xxiiaaooxxiiaaoo]

Hi, this is a great explanation of this topic. But can I request you to make another video about the rectangular clarifier? or would you tell me the difference between circular and rectangular clarifiers (function)? This is because for this shape there is less information online. thank you

[@xxiiaaooxxiiaaoo]

@@savree-3d thank you so much

[@vijayapawar1481]

Thank you sir

[@henrynjuguna7913]

What software was used for this 3D Demonstration

[@ZangpoSonam]

Thank you for sharing and explaining a valuable info. I have a request, if you could do a similar video on FAB ,SBR reactors. Thank you much appreciated 👍🏿

[@omercivileng9046]

amazing amazing amazing ... good bless you sir

[@vladimirmaslennikov2557]

Dear saVRee, thank you for your excellent video. May i ask you which software you did use for the 3D animations and rendering? Thank you.

[@بقاياانسان-ض5ظ]

مهتم

[@alimostafavimehr3531]

what a legend!

[@TheRayRayy]

Fantastic!

[@soumenmandal5557]

Could you please do the separate models of each water treatment units?? Currently I am working in an water treatment plant design sector.

[@abdelazizkadri6973]

It is helpful..thank you

[@anvarahemadmansuri2414]

please make a similar video for HRSCC as well

[@aryanchahar4260]

Thanks 🙏

[@pepe8212]

Thank you very much. Fantastic video, but I have a question at 16’57” isn’t that the Overflow rate = Influent flow rate/clarifier Surface Area? Thanks

[@oscarjavierbeltran6478]

Muy bueno,esperamos nuevos vídeos de este tema

[@MEWPolito]

Hi, nice explanation of the process. Was wondring if we can have direct conversation for some potential business. Plz let me know. Thanks

[@woodsyguy2753]

Isn't an aeration basin usually the first stage before one of these?

[@سعدزغلول-ن5ر]

Hi dear can you provide me adata sheet to choose. clarifier to prepare report

[@johnysingh5023]

Great video sir 😍

[@johnysingh5023]

@@savree-3d I really can't believe this video has very less views , It is the best video explaining dorr clarifier

[@blairedmonds6374]

why are the scrapers oriented in that fashion? shouldnt sludge go from outside to inside in one pass? or is it by design, as to not overload the motor running it?

[@anjorsalke2922]

Secondary clarifier working video

[@kadekevin566]

how much would a typical clarifier cost?

[@arcdolorito5436]

Does this process require any chemicals?

[@yadmala3593]

Thanks

[@saleemuddin2110]

Good Work, I worked so many filter plants of different capacities, I m interested how to design, can u help me?

[@rkstudy257]

Clearfire tank very heavy sluge top side ???

[@typerightseesight]

are these things spinning 24hrs a day?

[@savree-3d]

Yes

[@mohammadkhodabandehloo3570]

is this clarifier an "inclined circular" clarifier?

[@mohammadkhodabandehloo3570]

@@savree-3d Thank you. which type of clarifier was explained in this video?

[@mohammadkhodabandehloo3570]

@@savree-3d Ok, thank you very much

[@ranjithreddypeddakapu9549]

Hi, I just got a project going on this in my university there we got to treat 750000litres/day. Can you please give any suggestions about what dimensions and preferred shape should be appropriate. Thanks in advance.

[@peasant7214]

How about secondary clarifer?

[@tuyentran-ir1ch]

Where is the sludge withdrawal pipe?

[@disrael2101]

Great would be even greater if u could show a simulation of the real deal how it actually flows and not just theoritcal explanation.. very interesting regardless

[@garfieldsalmon9607]

100% 5star

[@savree-3d]

Thank you

[@98Luthfi]

teman teman doakan aku lulus paldom setelah nonton ini ya hhe makasih guyz lov u all

[@CornelStefan-geani]

Cam asa ceva arata o eolian

[@mantukumar9442]

Hindi language Mai sir

[@Raid77]

no

[@malvinderkaur541]

Every Nation city on ocean fronts should have ocean water treatment plants for human consumption as well as hydro energy and waste water of those places treatments before being immersed into oceans back, it has manyfold uses, not only huge amount of new work arena but it restructures the most important factor of society, instead of dumbass spendings on arms arsenal military waging useless wars with each other, monies should be spend on these new restructuring of social civil matters, military engineers, labor can be used along with civil ones, it's matter of strange truth that apart from USA nobody else as such attacks other nation unless attacked first in modern times especially middle east as of now, or earlier times, EU has sworn off after world war two, UK or Canada or Australia or any other, except Russia now so why USA all the times?, who is messing with their heads and systems with paranoia of ' world is their enemy" and instigates wars with others not even their issues, something not right here for long time it seems