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Join Date: Mar 2013
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Waste Water

03/01/2013 8:10 AM

When perform cleaning of equipment the dirty water along with the insoluble solids goes to the drain and end in the treatment plant we want to decrease the concentration of insoluble solids.

Is there any system on place to deal with this issue?

we are looking for the most economic and easy approach.

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#1

Re: waste water

03/01/2013 8:48 AM

Upstream of the treatment plant:

  • Change the process so that no solids are produced - why is the process plant making things that are to be flushed away in the first place <rhetorical question - NNTR>?
  • Reduce the production of insoluble solids
  • Change the process so soluble solids only are produced
  • Increase the dilution flowrate
  • Remove the insoluble solids to a separate stream

Downstream of the treatment plant:

  • Remove the insoluble solids to a separate stream
  • Increase the recovery ratio of insoluble solids to the existing insoluble solids stream
  • Increase the dilution flowrate
  • Render the incoming insoluble solids soluble by fair means or foul

Economics is a function of flowrates, the nature of the substances involved, and the loading. Without access to these numbers and the process flowsheets, the most economical way to go is a WAG at this time.

It's time to hire a Chemical Engineer.

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#6
In reply to #1

Re: waste water

03/02/2013 10:30 AM

It does not seem to me to be an Environmentally sound answer- converting all solids to liquids will put a lot of pollutants into the waste water stream which will either pollute the environment or lead to need to extract in a sewage plant, both of which are costly and bad business practices- a porous bronze or removable paper filter system would be healthier and not costly

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#15
In reply to #6

Re: waste water

03/04/2013 5:37 AM

The forum is still waiting for flowrates, dirt loadings and materials from the Original Poster, who made no mention of discharge consent limits either. Economic selection between possible solutions is still a long way off.

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#2

Re: Waste Water

03/01/2013 9:13 AM

They make drain inserts to filter out solids. Sizing depending on how fine of solids you wish to remove.

Or use a filter sock before it gets to the drain. After your done and the water drain through just shovel it up. This how we use to catch debris from steam cleaning fork lifts.

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#3

Re: Waste Water

03/01/2013 9:54 PM

'...we want to decrease the concentration of insoluble solids.

Is there any system on place to deal with this issue?....'

.

One approach would be to reduce the amount certain food you are consuming like: cabbage, carrots, apple skin, beets, potato skin, whole wheat, sweet potatoes, turnips, brussel sprouts and cauliflower...

.

and offset your calorie intake my consuming an increased amount of foods like: nuts, whole wheat flours, peas, oats, bran, citrus, apple (flesh), strawberry and barley.

.

...

.....or maybe that wasn't the dirty equipment you were referring to....

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#8
In reply to #3

Re: Waste Water

03/03/2013 12:54 PM

haa haa ha ha haaa eeeeheheheheh

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#9
In reply to #3

Re: Waste Water

03/03/2013 1:01 PM

ok i donno about industry scale water treatment but what about concentric/spiral upward flow in tower ? center's the low pressure (just a random fuzzup again) . . . there are <~~_@/¯\__@/¯\__@/¯\_ <~~ other flow designs that might be turn(ed) practical . . . as i said i'm not familiar with such sh..

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#4

Re: Waste Water

03/02/2013 1:22 AM

BEST-SIMPLEST - catch almost all solids fast with Electro Coagulation.

We can supply the system .

Make sure salt % not high in Waste Water,

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#5

Re: Waste Water

03/02/2013 3:45 AM

you could put a separation pit/trap in the drain before the treatment plant for the solids to settle in & put a sock in the drain after the pit to collect the solids that get past the pit. The pit/trap could be in the floor where the drain originates from where you are cleaning the equipment. Then you just get the apprentice/ junior to shovel it out & clean the sock on a regular basis.

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#7

Re: Waste Water

03/02/2013 12:44 PM

Run more water through.

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#10

Re: Waste Water

03/03/2013 1:26 PM

What waste are you cleaning off equipment (food product, metal swarf, dust, etc)?

Rather than using a hose could you use brooms or vacuum cleaners instead and hence bag this solid waste rather than flushing it down the drain?

As a further advantage it may be possible to recycle or sell the dry solids (whatever they are) to make the process more economical.

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#11

Re: Waste Water

03/03/2013 4:02 PM

i tried google search [ wastewater processing particle separation flow profile ]
(meybe there's already some updates to this thread ... with internet search you have to be patient and fast/diagonally read through results (no point to read more than 1-st 20...40 results (as the latter match lesser key-words)) and on the run modify/tune your search terms e.g. if term processing yelds too many "irrelevant results" you add [ -processing ] excluding such documents e.c. if you can't alter your flow rate try including your apx. flow rate as a number (such may and may not be for improvement))

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#12

Re: Waste Water

03/03/2013 4:05 PM

Wastewater treatment plants (Sewer treatment plants) usually have a bar screen (mechanical screeen) built into the headworks to remove large solid items, rag and plastic film.

This is then usually followed by a grit collection device. Usually a cone bottomed whirlpool, where solids like sand and silt settle to the bottom where they can be pumped away and handled separately.

From there on, the chemical processes happen that digest the nutrients. (But you're not interested in that)

Finally there is a "clarifier" where water is introduced to the centre and the relatively low flow speeds allow relatively fine solids to settle, while the clearer water is removed form the perimeter.

For your system, either a bar screen, a grit separator or a clarifier would seem suitable depending on the size and density of the items that you want to remove.

All are easy technology, generally high investment but very low running costs. Talk to your local water treatment people and they can advise you.

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#13

Re: Waste Water

03/03/2013 11:47 PM

stuff a towel in the drain and get a wet vac to clean up the water...assuming you are pressure washing which uses very little water.

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Anonymous Poster #1
#14

Re: Waste Water

03/04/2013 12:30 AM

The Op does not seem to want to give more information & has not replied to any of the suggestions so it obviously is not much of a problem to him & he just wanted to waste peoples time

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#16
In reply to #14

Re: Waste Water

03/04/2013 8:46 AM

no is not that I got my answer that's it that's the reason why I'm not writting anymore.

Thank you

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#17
In reply to #16

Re: Waste Water

03/04/2013 9:41 AM

well then out of courtesy you should have replied with the extra information asked for & tell every 1 that you have your answer & let every 1 know what you are going to do to solve your problem.

Instead you left the conversation without even 1 post till now

People have invested time in their replies & given some good solutions but may not be interested in replying next time you post

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#18
In reply to #16

Re: Waste Water

03/04/2013 1:42 PM

What answer exactly helped you?

It is helpful to know as we all learn a little also and it helps us all answer similar questions posted by others in the future.

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#19
In reply to #18

Re: Waste Water

03/11/2013 10:27 PM

Yes we need to know which one the correct answer is and where to put our GAs

Also anyone looking up the thread will be as wise as before unless you can let us know what helped you!

Was it the filter system from Ozzb in post 2#?

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#20
In reply to #19

Re: Waste Water

03/11/2013 11:15 PM

GAs for everyone that supplied a potentially valid answer that may or may not have helped then.

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#21

Re: Waste Water

03/14/2013 11:39 PM

Why not simply use a strainer to remove them?

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#23
In reply to #21

Re: Waste Water

03/15/2013 12:54 PM

what if it's a slayer house - likely not - the "waste" there would be not on your clothing ... as far as i know

anyway the Op asked cost-effective methods for insoluble partice separation - i guess it's "hot topic" even when he has accepted - he should go on with the Old-Style

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#22

Re: Waste Water

03/15/2013 6:42 AM

Maybe the OP will be nice enough to tell us what he did to resolve the problem & how well it worked so we can all know ???

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Users who posted comments:

129CBRider (1); Anonymous Poster (4); ci139 (4); Daniel Diaz (1); DVader1000 (1); Hugh Sutherland (1); IdeaSmith (1); jack of all trades (3); JNB (1); Just an Engineer (1); MUKULMAHANT (1); ozzb (1); PWSlack (2); truth is not a compromise (1)

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