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dennispollard  
#1 Posted : 10 May 2021 15:18:00(UTC)
Rank: Forum user
dennispollard

I am looking into ISO14001 and one of the questions being asked his how they are preventing the waste water from floor cleaner entering main drainage system.

Drain in question is within loading bay and we believe is going through 2 stage separator, would this be sufficient to prevent cross contamination?

Roundtuit  
#2 Posted : 10 May 2021 15:23:32(UTC)
Rank: Super forum user
Roundtuit

A separator will typically capture oil.

It would have no effect upon any "detergents" used in the cleaner - you need a procedure about where the machine can be discharged and an emergency drain cover to go with your spill kit.

Roundtuit  
#3 Posted : 10 May 2021 15:23:32(UTC)
Rank: Super forum user
Roundtuit

A separator will typically capture oil.

It would have no effect upon any "detergents" used in the cleaner - you need a procedure about where the machine can be discharged and an emergency drain cover to go with your spill kit.

chris42  
#4 Posted : 10 May 2021 15:52:34(UTC)
Rank: Super forum user
chris42

It depends on what your separator does exactly some can separate out oil as well, but some just separate out particulate matter. This water that will go down the drain, what is it contaminated with exactly? is it just dirty? If it is from the loading bay where just the people walk, then there should not be any oil on the floor.

If it is just dirty water and you have a separator for the particulates, just contact your water undertaker, and ask if it is ok, they will probably say yes, ask for a confirmation letter / email /permit. You need to estimate the qty you will put down the drain before you talk to them. You will need to have an aspect/impact assessment for this activity for your ISO.

If it does separate oil out, then you need to have something in place to ensure this is emptied, and when the particulate matter / sludge is removed obviously it will be classed as hazardous waste.

Chris

dennispollard  
#5 Posted : 11 May 2021 07:14:43(UTC)
Rank: Forum user
dennispollard

Originally Posted by: dennispollard Go to Quoted Post

I am looking into ISO14001 and one of the questions being asked his how they are preventing the waste water from floor cleaner entering main drainage system.

Drain in question is within loading bay and we believe is going through 2 stage separator, would this be sufficient to prevent cross contamination?

Thank you 

dennispollard  
#6 Posted : 11 May 2021 07:18:30(UTC)
Rank: Forum user
dennispollard

Originally Posted by: chris42 Go to Quoted Post

It depends on what your separator does exactly some can separate out oil as well, but some just separate out particulate matter. This water that will go down the drain, what is it contaminated with exactly? is it just dirty? If it is from the loading bay where just the people walk, then there should not be any oil on the floor.

If it is just dirty water and you have a separator for the particulates, just contact your water undertaker, and ask if it is ok, they will probably say yes, ask for a confirmation letter / email /permit. You need to estimate the qty you will put down the drain before you talk to them. You will need to have an aspect/impact assessment for this activity for your ISO.

Thank you

Thank you 

Thank you

If it does separate oil out, then you need to have something in place to ensure this is emptied, and when the particulate matter / sludge is removed obviously it will be classed as hazardous waste.

Chris

Edited by user 11 May 2021 07:24:16(UTC)  | Reason: Added thank you

dennispollard  
#7 Posted : 11 May 2021 07:27:47(UTC)
Rank: Forum user
dennispollard

Thank you all for you advice 

thanks 1 user thanked dennispollard for this useful post.
peter gotch on 11/05/2021(UTC)
Gerry Knowles  
#8 Posted : 11 May 2021 07:52:43(UTC)
Rank: Forum user
Gerry Knowles

May I suggest you speak to your water supply company.  I once had a situation where a compnay I was working for had a the same situation, where detergent contaminated water and process water (condensation from compressers) were being discharged directly into the local foul water system.  It was a situation that had been going on for a long time, so they fronted up to the water company and said that they had had been doing this.  Their response was supportive and in the end they issued the company with a discharge licence allowing them to discharge contaminated water into the foul drain. I can remember how much they were allowed to discharge but it was a huge amount and was measured in cubic metres but was way in excess of what they had been putting in the drain.  

I guess the message is that the solution may be simple and does not always require huge amounts of time and money put into it. 

peter gotch  
#9 Posted : 11 May 2021 09:48:32(UTC)
Rank: Super forum user
peter gotch

Hi Dennis - plenty of good advice already given.

Quite likely that ISO 14001 has sent you on a wild goose chase! Whilst you should be doing an assessment of what you are discharging (and the mitigation provided), it might well be that this assessment doesn't need to be over complicated.

This is all about making sure that what you discharge doesn't pollute e.g. watercourses. What you put into the sewer is routinely processed at a waste water [ie sewage] treatment works (WWTW), that filters the discharge and settles out sludge - the water companies have various ways of dealing with the sludge, which you probably don't to know much about. [If you are curious, there is plenty on the internet to explain how WWTWs should be designed and operated!]

However, they need more sophisticated processes to deal with contaminated such as acids, alkalis and, in particular organic solvents and such like - these are best dealt with at source, preferably such that you do not need a discharge licence to permit you to discharge into the sewage system.

Other contaminants that the local WWTW are unlikely to be capable of adequately dealing with [assuming that they don't block up the sewers before they reach the WWTW] include microplastics and cooking fats, which is why we are all told not to dispose of e.g. nappies, cotton buds and cooking oils down the toilet.or sink. 

If all you are dumping into the sewer is general dirt, it is unlikely that you will need a discharge licence but your water company could advise you.

P

Edited by user 11 May 2021 09:49:46(UTC)  | Reason: Minor reword

thanks 1 user thanked peter gotch for this useful post.
jimmyquinn68 on 18/05/2021(UTC)
chris42  
#10 Posted : 11 May 2021 10:43:47(UTC)
Rank: Super forum user
chris42

To add to my previous post and just to comment further it is very possible that when you pour the contents of your floor cleaner down the drain, that it is NOT the foul sewer, it could just be a storm water drain! (otherwise, you would get a sewage smell come out of it). However, as you have / are going for ISO 14001 you have a drainage plan and normally they are colour coded red for foul and blue for storm. Some drainage systems bring storm and foul sewer together further down the line, but others do not.

As noted, give them a call, we are allowed at one place to discharge up to 3,000 of dirty, water with detergent per day! So I’m sure your floor cleaner be ok. BTW I went for 3,000 litres, because this was the max, I could get without having to pay (so why not). It goes out via a storm water drainage system into a local river and is fully endorsed by the Env agency!

Yeh water drained from a compressor will have a small amount of oil in it.

 

Chris

A Kurdziel  
#11 Posted : 11 May 2021 16:22:03(UTC)
Rank: Super forum user
A Kurdziel

Looking at the original  post who is asking the question about contaminated water? Is this requirement something that the local regulator  wants you to do or is it something that you have decided to do as part of your environmental commitment or is it something that you have been told to do by your  ISO 14001 auditors.  

Roundtuit  
#12 Posted : 11 May 2021 18:31:51(UTC)
Rank: Super forum user
Roundtuit

Originally Posted by: chris42 Go to Quoted Post
However, as you have / are going for ISO 14001 you have a drainage plan and normally they are colour coded red for foul and blue for storm.

In the United Utilities (formerly North West Water region) most drainage and supply plans where they exist are still the old black ink drawings - many a happy hour with flourescent green drain dye :-)

Some ISO 14001 sites will paint the drain covers especially high risk surface waters, others avoid contamination by applying signage adjacent to the drain.

thanks 2 users thanked Roundtuit for this useful post.
A Kurdziel on 12/05/2021(UTC), A Kurdziel on 12/05/2021(UTC)
Roundtuit  
#13 Posted : 11 May 2021 18:31:51(UTC)
Rank: Super forum user
Roundtuit

Originally Posted by: chris42 Go to Quoted Post
However, as you have / are going for ISO 14001 you have a drainage plan and normally they are colour coded red for foul and blue for storm.

In the United Utilities (formerly North West Water region) most drainage and supply plans where they exist are still the old black ink drawings - many a happy hour with flourescent green drain dye :-)

Some ISO 14001 sites will paint the drain covers especially high risk surface waters, others avoid contamination by applying signage adjacent to the drain.

thanks 2 users thanked Roundtuit for this useful post.
A Kurdziel on 12/05/2021(UTC), A Kurdziel on 12/05/2021(UTC)
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