
Filtration experts, over the years, have discussed combination filtration and debated its definition.
- In the realm of cartridge filtration, simply defined, a combination filter is one that does at least one other processing job at the same time as filtering a suspension. For example, this could be carbon canister which removes both suspended and dissolved components.
- In water applications, a combination filter removes bacteria, sediment, chlorine taste and odor, and scale.
- In lubrication oil filtration, combination filtration refers to full-flow and by-pass flow filtration.
- For small scale process filtration, combination filtration is installing bag and cartridge filtration systems in series.
There is, however, a new definition of combination filtration that transcends the standard approach and will assist process engineers with trouble shooting and idea-generation. The approach relies upon the slurry analysis and testing to uncover the “process symptom” and then develop a process solution called “combination mechanical slurry conditioning and filtration.”
Filtration Technology in Combination
There are, without doubt, there is a lot of SLS equipment already existing in the marketplace that can be applied in combination, including the use of chemicals such as flocculants and coagulants. However, from a practical viewpoint, let me review general operating conditions at chemical plants and illustrate creative idea-generation when examining a process problem.
In this first case, we have a high solids slurry with a wide particle size distribution. What should you do? My idea is to provide filtration for the slurry with a continuous technology and let the fines bleed through; capture theses fines with clarification. Yes, more filtration but a much more reliable system.
This new definition of combination filtration will provide process engineers a framework for idea generation when analyzing an operating bottleneck. Complete my application data sheets for new and existing application data for filtration for solid-liquid separation. Let us start the process of finding the right SLS equipment for your business.
[…] In my work at BHS-Sonthofen Inc., I’ve seen filtration technology impacted by particles and cake formation that weren’t predicted in designing the solid-liquid separation solutions. […]
[…] in the control system or a control communication problem that are not being recognized that are causing the filter problem. Finally, if flocculants and chemicals are being used, have these changed? […]