Published by Akshay Patel
Can someone guide me on the process design for a flat bottom sludge blanket clarifier for a municipal drinking water treatment plant?
Much appreciated!
Published by George Farrell
Is the objective to treat the sludge from the decanter?
Published by João Castro
Why flat bottom? I'm curious about that. Typically, a design like this uses an upstream clarifier. Is the turbidity too high? Tell me what has been defined.
Published by João Castro
We are designing a water treatment plant of 216 MLD capacity wherein the client is insisting on flat bottom sludge blanket clarifiers with mechanical scrappers
Published by Akshay Patel
Tell me what has been defined.
Published by João Castro
Convince your customer to give up this option
Published by João Castro
In this case is to better to use 60 m3/m2/day to calculate the section of the filters if money s not problem.
Published by João Castro
Mechanical structures is ever one more problem so, manutention is necessary and expensive
Published by João Castro
Using a upstream clarifier you can use, too, a sludge treatament in separate.
Published by João Castro
The turbidity is small or medium so, you can use an upstream clarifier. The Filter washing water is the problem due to the high volume. But if this is not a problem I would prefer this.
Published by João Castro
There is a impediment to use flat bottom? Rock or other thing
Published by João Castro
I think that you have to use a sludge treatment in separate
Published by João Castro
If I understood you will need a conventional treatment.
Published by João Castro
The turbidity is peak season 90 NTU
Published by Akshay Patel
Karl-Uwe Schmitz perhaps something you can help with?
Published by Trudi Schifter, CEO and Founder AquaSPE
There are a variety of sludge blanket clarifiers. Each has their own nuance for using the sludge to aid in treatment, I would source information from the various vendors, as there are Pulsator, Actiflo, et. al. Great place to start is with vendor technical literature available online and then develop matrix of the differences and similarities then determine which would most closely fit your process requirements based on the wastewater characteristics for your project.
Published by John Salonich, Vice President / Managing Director
To design clarifier you can use standard design practices but the scraper has to be well engineered either using vacuum or siphon devices or type Zieckert. Regards
Published by Ademar Cesar Ferreira, H2O Engenharia Ltda - General Director
French English
Bonjour je pense que dans votre cas la mise en place de 3/4 bassins à déverse serait plus approprié. Chaque bassin retiendra une partie des matières en suspension qui seront de moins en moins nombreuses en sortie du dernier bassin qui lui filtrera l'eau en débordement. La récupération des boues se faisant pas suceur
Hello I think that in your case the installation of 3/4 overflow basins would be more appropriate. Each tank will retain a part of the suspended matter which will be less and less numerous at the outlet of the last tank which will filter the overflowing water. The recovery of sludge by not sucking
The flat bottom presents a challenge, and will then require the installation of scrapers to concentrate the sludge to a sump where it can be removed. By installing a suspended sludge concentrator cone at the level of the sludge blanket, you can design to remove 90% or more of the sludge from the suspended cone. I have tried to attach two standard design options - one with scrapers and one with a suspended cone. You will probably need to incorporate both concepts into your design.
Published by Ian Pearson
Hi Ian, thanks. The resolution is a bit hard to read. Much appreciated if you could upload a higher resolution version. Thanks
Published by Trudi Schifter, CEO and Founder AquaSPE
Can you oblige by sending the drawings on my e-mail - info@patfil.com as they are not properly readable on the site.
Published by Akshay Patel
you can download directly from the site
Published by Trudi Schifter, CEO and Founder AquaSPE