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BARGES: All about barges and barging - building, buying, maintaining, equipment, handling on the water, etc.
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TOPIC: waste water treatment

waste water treatment 10 Nov 2019 10:31 #111319

Michael,
Thanks for your insightful evaluations. Please keep us updated on the installation and operation.
Eric

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waste water treatment 09 Nov 2019 08:29 #111271

  • Michael Grain
  • Michael Grain's Avatar Topic Author
Hello
sorry i am only just posting a reply, i have been away for a couple of weeks.
thanks for all the information it is very much appreciated.
after doing quite a bit of research i have narrowed it down to three options
1) enteron,2) pursan 3) ecomar

enteron
this looks a very good system and is mid range on costs about 7k, it looks like it is a great option if you live aboard. it works on bacteria cleaning up the waste, but as i am not going to live aboard,so this option would be no good for us, as everytime we were off the boat the bacteria would die off and a re treatment would be required, easy to do just empty the saches into the toilet but it takes about a week to activate.
pursan
this is the cheapest option about 3k and appears to do everything that is required but is only certified for use in america and as far as i can see does not meet any of the european standards. it is a very simple system, maybe too simple to work effectively.
ecomar
this is the most expensive, i have had costs from all over the world and the price varies immensely, i have found a company in the uk, Servac,that can supply the 20s version, this is there smallest model, they have assured me it will be more than adequate for what i want. they can provide all i need for me to install myself for about 15k. and it is certified to all european standards, the installation side will be no problem as i run an engineering company that install industrial steam and thermo fluid boilers which have water treatment systems.although i will have servac commision the unit.
it is quite a lot more than i had budgeted for but i have decided to bit the bullet an go for the ecomar, i think it will pay dividends in the long run.

thanks for all the posts
i have attached a picture of my build to date and a bit of detail of the ecomar

regards
mick grain
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waste water treatment 28 Oct 2019 15:30 #110990

I mentioned in another thread recently, but we installed a large 3,500l Sewage Treatment Plant (STP): https://biocellwater.com/product/biocell-quickone-plus/
But we have the space in a 38m Spits., and don't travel to the continent.

There was another more compact option from Marsh which may fit?
https://marshindustries.co.uk/products/portapura/

These STP's actively treat (Digest) waste with air diffusion and bacteria unlike a traditional settling septic tank, and as such the STP's are CE approved to BS EN 12566, which means they can discharge into a watercourse without needing a permit.. Although the CE standard works across the EU I don't know how other EU states view their use on a vessel? Obviously they don't have the US Coastguard approval though, as they're sized and designed to conform to water quality standards for properties discharging into a watercourse in the EU.

I decided to add a UV stage on the outlet, so our wastewater will now have less suspended solids, nitrate and phosphorous from the digestion process and less or hopefully no pathogens and viruses helped by the UV than the Thames itself, which bearing in mind grey water can have a high count of pathogens etc, running it all through the STP seemed a good idea for the environment.

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waste water treatment 27 Oct 2019 08:29 #110937

Michael, good for you in deciding to install a treatment system. Blue Flag are looking at various options including a 'kit' system that we hope to design with a member development group.

Unfortunately, many of the commercial systems are oversized for hotel ships and very expensive and also require chemicals for the final sensitisation. In the meantime, see Blue Flag 130
barges.org/publications/blue-flag/bf-back-copies/blue-flag-130-august-2018/viewdocument
where we published an article by the owner of Spes who installed this very model that you are considering.

Another to consider and one which I am planning to review in a future BF is Enteron,
www.tomlogisch.com/enteron/?lang=en
This seems to be lower price €<8,000 and also uses UV sterilisation of the discharge water meaning no chemicals.

If anyone with waste treatment experience in industry or just good ideas on the subject is interested in joining a development group please contact me off line This email address is being protected from spambots. You need JavaScript enabled to view it.

Michael Grain wrote: i am looking at fitting a ecomar 20s waste water treatment system to the 65ft dutch cruiser barge i am building, has anyone else fitted one, or is there any other alternatives as this unit is very expensive
thanks

The following user(s) said Thank You: Eric Davis

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waste water treatment 27 Oct 2019 08:18 #110935

Sorry Michael - not Micheal Oh for a Edit button.

Paul

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waste water treatment 27 Oct 2019 08:17 #110934

Hello Micheal
I priced one about three years ago, and could not see where how the cost was built up, I think there was a thread here at the time.
I know that certification for use costs a lot of money, but for what is a couple of joined poly tanks, a pump a couple of motorised valves a dosing pump for the peroxide and a small integrated circuit to control it, that it was about ten times what it should be.
Then I realised that their market is Super Yachts, where money is no object.
Just my thinking, the capital and running costs would pay for an awful lot of pump outs, but in most of Europe there are no (working or easy to get to with a 20m barge) pump outs anyway, so discharge to river on an "as produced"without paper basis is no real problem.
Paul Hayes

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waste water treatment 27 Oct 2019 06:51 #110933

  • Michael Grain
  • Michael Grain's Avatar Topic Author
i am looking at fitting a ecomar 20s waste water treatment system to the 65ft dutch cruiser barge i am building, has anyone else fitted one, or is there any other alternatives as this unit is very expensive
thanks

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