Dust Remove/Settle Down from Water

You mean "dust in suspension", not "dissolved dust". If it was dissolved, it would be like salt or sugar in the water, not particles.

water is like mud water. when we pass it from micron filter , water is filtered but clog the micron filter with in 10-15 minutes ( flow 5 Ton per hour).

Have you tried to spin it?

The purpose of a filter is for it to become blocked, though.

Hi there Lalit, did you try using a centrifuge? You'll need to contact a proper manufacturer of which there are a lot in the internet, by the way (though you have to sift through them) and give them the density of the medium (the mud water) to include perhaps the separate densities of the filtrate and the cleaned water. Unless you want a totally cleaned water free of any suspended particles, the "cleaned" water from the centrifuge can be run through your micron filters which of course will be clogged ultimately, but for a much longer time.

I do not see at all how a Moment-generating Function can be involved in water filtration. Then again, it may be useful in predicting when a particle size distribution will clog your filter.

Your filter will clog whenever enough particles larger than the pore apertures fill these apertures. A larger aperture filter upstream may distribute the congestion so that it takes longer to clog but it will still clog.

I recommend you install redundant paths with each individual rate of flow metering equipment. Detecting a filter is about to clog on a fraction of your production path so maintenance can preemptively service an approaching failure is better than shutting down the whole process.

Specific gravity of minerals is usually around 2.5. Centrifuging increases the G acceleration to reduce the settling time.

My understanding is that you want to recover the backwash water. Typical processes are coagulation, flocculation and sedimentation.

"Spent backwash water is either discharged without treatment to a sanitary sewer system or is treated and recycled within the plant.^{[4]:22.37-22.40} Historically, backwash water was discharged directly to surface water supplies; however, direct discharge is now highly regulated through NPDES discharge permits and is often discouraged. Used backwash water contains high concentrations of particulate material. Typical treatment processes include coagulation, flocculation and sedimentation.^[9]High molecular weight synthetic organic polymers are sometimes added to facilitate the formation of settleable floc. Failure of a backwash treatment process and reintroduction of the resulting poor quality water into the main water purification plant flow stream can cause overall process upsets and result in the production of poor quality treated drinking water.^{[6]:20.11–20.13}"

https://en.wikipedia.org/wiki/Backwashing_(water_treatment)

Use it to water the flowers. I water the grass with my backflush water.

Saving a penny can waste a pound sometimes.

Define your acronyms...

http://www.bionicsro.com/multigrade-sand-filter.html

...MGF can be many things...

You might try putting the backwash water into a holding tank and letting the solids settle to the bottom, removing the top-water after a period of time, then pumping out the bottoms, similar to this system.

A bigger tank between alum addition and filtration will allow more time for the larger particles to separate. The residuals will either sink so the tank will gradually fill up from below or float where they can be skimmed off.

Make sure the outlet is towards the centre height of the end wall as there are times when a different combination of incoming impurities can cause both scenarios at the same time.

You might look into swimming pool cartridge filters.

Are you able to use waste heat from your process to heat the water, capture the distillate and separate the dust ?

Suggest that you look up water purification processes. Typically would add coagulant before initial filtration. Then the backwash is already larger particles. The backwash would then be processed through a "clarifier" where these particles can settle BEFORE the outflow is sent back to head of works.

The sludge from the clarifier is then possibly centrifuge treated or just dried in the open.

Sometimes necessary to add Chlorine to backwash water if contaminant is biological and alive (Some cysts) but this would be unusual.

Ask your local metropolitan water department what they do and you will find out.

• There are any number of processes for reducing suspended solids in any water.
• Reducing dissolved solids can be carried out by rather fewer: blending, evaporation and reverse osmosis are among the few.

If in doubt, consult a qualified local Process Engineer.

Hi there. I'm sure you want a fast rate of impurity-water separation. Maybe a centrifuge will be suitable. But a study on the density of the impurities will have to be determined to properly design the configuration of the centrifuge, the pumping system and the collection of the filtrate/solids.

Waste water is treated with various Coagulation / flocculation at various temperature and parameters . Check it. Treated water mostly used in gardening or recycle it.

Pristineet.com