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...
eCompendium of sanitation systems and technologies: ecompendium.sswm.info/sanitati...
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...
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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
Finally, I can understand whats going on in the primary clarifier. Thank you so much :
its such amazing explanation about how a primary clarifier work with 3D animation. so it can be easily understood. thank you so much!
Awesome and clear explanation! Everything is better when is backed-up with a 3D graphics. Thanks a lot.
One of the best videos on primary settler or clarifier! thank you!
Best explination about this topic. Thank you so much. I really recommend. You voice is so clear and simple. Also the animation is perfect.💙💙
An awesome explanation along with 3d graphics, thank you!!
Clarifiers are very good 3D illustrations that are very helpful and educational about how the clarifier works. Thank you and keep educating
Such an awesome explanation about primary clarifier works with amazing animation thx
Yet another very detailed but easy to follow explanation...thank u...
Thank you very much for this thorough explanation!
These kind of 3D vedio along with excellent communication skills makes us to gain more knowledge about things.
This has been a lot of help. Thank you!
3D visualization and clear communication made it excellent informative video.
This video make the explanation about clarifier very specific in step and its tools and interesting with 3d animation
Wow. That explains the process and working quite well. Really appreciate it (Y)
It is very useful, very well informed, thank you very much for sharing this incredible video.
Very nice tutorial!!
I needed this. Thank you
U deserve an award sir for ur amazing explanation!
amazing animation. thank you.
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!
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.
That's lit! Thank you!
Wonderful video and explanation. Thank you sir !!
Thank you, glad I could find this on youtube
Great content! Thanks so much
Excelent explanation. Thanks.
A good video. Much appreciated.
Very informative content. Keep it up!
Excellent video.
thank you so much. You're awesome, and the video is very helpful.
thank you so much, this video very helpful.
Now I know how these work! Great!
very informative and interesting
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.
Thank you so much that was really good and useful
Fantastic!
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.
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 👍🏿
amazing amazing amazing ... good bless you sir
Muy bueno,esperamos nuevos vídeos de este tema
It is helpful..thank you
Thank you
very good video
WOW great video for sure. Keep them coming.
More to come! Please subscribe!
Really great work sir thank you thank you so much from India
Best video and very well explained. Thank you
Glad it was helpful!
Thank you sir
Very well explained..best video!! 🙌
Glad it was helpful!
Thanks 🙏
Yeah, That's it! This is the topic of the knowledge (and) I wanting to know 🙂 thanks! 👍
Glad it was helpful!
environmental engineering college major here studying for finals.... this is fascinating, tysm!
what a legend!
would you please make a similar video about the biological treatment/MBR , secondary treatment and advanced treatments as well? Thank you in advance.
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 ?
Great video sir 😍
@@savree-3d I really can't believe this video has very less views , It is the best video explaining dorr clarifier
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?
Could you please do the separate models of each water treatment units?? Currently I am working in an water treatment plant design sector.
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
Excellent video. Can you tell me what software you are using to illustrate this model?
please make a similar video for HRSCC as well
Thanks
Good Work, I worked so many filter plants of different capacities, I m interested how to design, can u help me?
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.
مهتم
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
@@savree-3d thank you so much
What software was used for this 3D Demonstration
Secondary clarifier working video
great video. WHich sotware you used for making this 3d Model? AutoCAD or blender?
We use Blender and SolidWorks.
Isn't an aeration basin usually the first stage before one of these?
Hi, nice explanation of the process. Was wondring if we can have direct conversation for some potential business. Plz let me know. Thanks
Hi dear can you provide me adata sheet to choose. clarifier to prepare report
how much would a typical clarifier cost?
Does this process require any chemicals?
Clearfire tank very heavy sluge top side ???
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?
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
How about secondary clarifer?
Where is the sludge withdrawal pipe?
are these things spinning 24hrs a day?
Yes
is this clarifier an "inclined circular" clarifier?
@@savree-3d Thank you. which type of clarifier was explained in this video?
@@savree-3d Ok, thank you very much
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.
teman teman doakan aku lulus paldom setelah nonton ini ya hhe makasih guyz lov u all
100% 5star
Thank you
Hindi language Mai sir
no
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