SuSanA - Forum Kunena Site Syndication http://forum.susana.org/ Mon, 24 Nov 2014 21:19:08 +0000 Kunena 1.6 http://forum.susana.org/components/com_kunena/template/default/images/icons/rss.png SuSanA - Forum http://forum.susana.org/ en-gb Re: Short recap of IWA conference on sustainable wastewater treatment and nutrient recovery in Kathmandu - by: Marijn Zandee http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/11080-short-recap-of-iwa-conference-on-sustainable-wastewater-treatment-and-nutrient-recovery-in-kathmandu#11090 http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/11080-short-recap-of-iwa-conference-on-sustainable-wastewater-treatment-and-nutrient-recovery-in-kathmandu#11090
Separated storm-water sewers with decentralized infiltration are usually discarded because of seemingly much higher costs. However this rarely takes into consideration the larger impacts on the overall water cycle and dropping ground-water tables (and salt-water intrusion in coastal cities).
I think most of the experts agree on this though, it is more of an issue that budget allocation usually goes for the "cheaper" option.


I think this is especially true in a place like Nepal, where 85% of the annual precip falls in a 3.5 month period. If we can locally infiltrate storm water, the waste water treatment solutions (centralized or de-centralized) could be designed so much more efficiently.

Marijn]]>
Processing technologies for excreta or faecal sludge Sat, 22 Nov 2014 07:39:09 +0000
Re: Short recap of IWA conference on sustainable wastewater treatment and nutrient recovery in Kathmandu - by: JKMakowka http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/11080-short-recap-of-iwa-conference-on-sustainable-wastewater-treatment-and-nutrient-recovery-in-kathmandu#11087 http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/11080-short-recap-of-iwa-conference-on-sustainable-wastewater-treatment-and-nutrient-recovery-in-kathmandu#11087 Marijn Zandee wrote:

• Grey water separation and decentralized treatment (same for rainwater), is totally feasible. It should be promoted much more “aggressively”.

Separated storm-water sewers with decentralized infiltration are usually discarded because of seemingly much higher costs. However this rarely takes into consideration the larger impacts on the overall water cycle and dropping ground-water tables (and salt-water intrusion in coastal cities).
I think most of the experts agree on this though, it is more of an issue that budget allocation usually goes for the "cheaper" option.

Marijn Zandee wrote:

• The “BAMBi” filter that EAWAG uses in the “blue toilet”, may also find application in greywater treatment systems in many places with space limitations.

This is kind of funny if you know the history behind these gravity driven membrane filters. The system I worked with started out as a creative re-use of UF membranes from waste-water MBRs, was then converted for emergency/low cost drinking water treatment, then EAWAG thought their GDM drinking water treatment system could also be used for treating the wash-water in their toilet... and now it is back at waste-water ]]>
Processing technologies for excreta or faecal sludge Fri, 21 Nov 2014 15:25:00 +0000
Short recap of IWA conference on sustainable wastewater treatment and nutrient recovery in Kathmandu - by: Marijn Zandee http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/11080-short-recap-of-iwa-conference-on-sustainable-wastewater-treatment-and-nutrient-recovery-in-kathmandu#11080 http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/11080-short-recap-of-iwa-conference-on-sustainable-wastewater-treatment-and-nutrient-recovery-in-kathmandu#11080
I recently had the opportunity to participate in the “IWA specialist conference Global challenges: Sustainable wastewater treatment and resource recovery” here in Kathmandu. Which was quite interesting, and I would like to share some messages and impressions.

The thing that surprised me most during the conference is how many research institutes, companies and utilities are working on nutrient and energy recovery in the developed world these days. The subject really seems to have “exploded” in recent years. Considering some of the recent discussions regarding what is and is not “Ecosan” on the forum. Maybe we also have to expand the forum somehow and come up with a new category where people can post information regarding resource recovery from centralized wastewater treatment plants?

Below I will list some other points that I found interesting. Many may not be new, but still good to remember:

• In many developing / middle income countries (and in developed ones too), the way invitations to tender for wastewater treatment systems are written more or less dictate a “classic” WWTP.

• In the developed world, where WWPTs are already common, it seems that many to ideas achieve energy neutrality and resource recovery are based on adding other (organic) wastes to the processes in the plants. While this may make sense for ‘Industrial size” WWTPs it still seems to me that separation is a better way to go in the developing world.

• Grey water separation and decentralized treatment (same for rainwater), is totally feasible. It should be promoted much more “aggressively”.

• The “BAMBi” filter that EAWAG uses in the “blue toilet”, may also find application in greywater treatment systems in many places with space limitations.

• Waste water is almost all water, future developments in places with water scarcity (Australia, parts of the USA), are likely to be driven by water prices (and the desire for drinking water quality effluent), rather than other recovery options.

• One way to prevent failures of lager waste water treatment systems in developing nations is to use a model where the company who installs the system also has to operate it for 15 years or so.

Regards

Marijn]]>
Processing technologies for excreta or faecal sludge Fri, 21 Nov 2014 03:35:32 +0000
Re: Sustainable Decentralized Wastewater Management in Developing Countries (AIT, Thailand) - by: muench http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/4750-sustainable-decentralized-wastewater-management-in-developing-countries-ait-thailand?limit=12&start=12#10966 http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/4750-sustainable-decentralized-wastewater-management-in-developing-countries-ait-thailand?limit=12&start=12#10966
Thanks for these explanations. Very interesting.
Could you also post some photos of these installations in Swedish schools? How many Swedish schools have these toilets and what is their motivation (are they perhaps in remote rural areas and not connected to a sewer system?)?

Are the school caretakers (janitors) or maintenance staff OK with dealing with the compost? That's very progressive! I don't know if German care takers could be convinced.

Do you have any photos of the maintenance tasks? Are there any requirements by the Swedish legislator to prove that the compost is safe enough to use in school gardens? Then again, only a few litres of compost per year from an entire school is not a lot.

And I think you missed this question of mine: Is the hydrocyclone separator patented by your company? (i.e. would someone like AIT not be allowed to also apply this design, too?)

Regards,
Elisabeth

P.S. I have alerted Thammarat to this thread by e-mail.
P.P.S. It might be a good idea to split off the last few posts and put them in a new thread?]]>
Processing technologies for excreta or faecal sludge Thu, 13 Nov 2014 09:08:45 +0000
Re: Exploring New Gen Technology for eToilets - by: Bincy http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/3663-self-sustained-etoilet-for-households-urban-semi-urban-public-community-sanitation-eram-scientific-india?limit=12&start=24#10861 http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/3663-self-sustained-etoilet-for-households-urban-semi-urban-public-community-sanitation-eram-scientific-india?limit=12&start=24#10861
Thank you for the interest shown in our product.

We have developed customized variants of eToilets which includes the general public model, civic model, women-friendly model and school model for gender specific use by the students. These modular, pre fabricated structures are made of steel (stainless and mild) and are integrated with user-friendly interfaces for enhanced cleanliness and hygiene. Below are the clarifications on the queries raised to give you better insights on eToilet.

(1) Is their any solution for used pads ( During Mensuration) in this e-toilet for the uneducated poor rural women of India ? It may create Choke in auto flushing system of e-Toilet.
To address the challenges related to safe disposal of sanitary napkins, we have provision for sanitary napkin vending machine and napkin incinerators that ensure safe disposal of used sanitary napkins. Since we have a system in place, issues related to choking will not be a challenge for eToilets.

2) How it could be promoted in every public places ? Here, I am talking about the price of different models.
We have our presence in over 13 States PAN India with 600+ installations till date.
The eToilet price ranges from 1 lakh onwards with the higher end models priced at around 3-6 lakhs. Our recently launched model, e-Lite 14 is solar powered and is incorporated with self-washing and cleaning mechanisms thus minimizing manual cleaning. e-Lite 14 eToilet model is suitable for schools and controlled environment usage such as corporates, hospitals, etc.

3) Do you have any idea on e-Urinals/ Bio Urinals ?
Currently, we do not have e-Urinals/Bio Urinals.

4) Any suggestion to start this type of project in Odisha?
We would be happy to extend our services in Odisha. It would be good if you could approach some companies who are looking forward to utilize CSR funds for sanitation projects in your region. NGOs could be another option.]]>
Processing technologies for excreta or faecal sludge Thu, 06 Nov 2014 05:57:09 +0000
Re: Sustainable Decentralized Wastewater Management in Developing Countries (AIT, Thailand) - by: aquatron http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/4750-sustainable-decentralized-wastewater-management-in-developing-countries-ait-thailand?limit=12&start=12#10857 http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/4750-sustainable-decentralized-wastewater-management-in-developing-countries-ait-thailand?limit=12&start=12#10857
One of our retailers gave me this link to your forum.

The Aquatron separator was invented in Sweden by an engineer at IBM during the 80s, the first working systems were manufactured and installed in the beginning of the 90s.
In the end of the 90s there was a lot of big systems installed in public schools. The biggest one had 4 Aquatron systems that served 800 students, this system was up and running for over 15 years. With the Aquatron system the architect installed urine diverting toilets, the urine was collected in big tanks and local farmers used this for irrigation. Unfortunately, later on, more very young students (4-5 years old) was added to the school and the usage of the urine diverting toilets was too difficult to them. The direction of the school disconnected the toilets and the Aquatrons with them (even though they never had problems with the Aquatron systems)...
Today our best reference in Sweden is a school in Lund where 200 students use one Aquatron system since 1997.

Aquatron has changed owner and manufacturer during the years, and we estimate that over 10 000 systems been manufactured over the years (there is no record).

Our main sales is in Scandinavia, but we have clients all over Europe, Belize, USA, New Zealand, Australia and India. Of course we have some private persons that ordered systems and we don't know where in the world it's installed.

The cost on the Aquatron systems depends on the demands, but the prices estimated in Euros is from 1500€ and up included the composting chamber.

The maintenance cost is very low since most of our clients serve their own systems and the only part that needs to be maintained or served is the wire ring in the separator.
The schools only empty a few liter per year of compost.]]>
Processing technologies for excreta or faecal sludge Wed, 05 Nov 2014 16:29:07 +0000
Re: Sustainable Decentralized Wastewater Management in Developing Countries (AIT, Thailand) - by: F H Mughal http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/4750-sustainable-decentralized-wastewater-management-in-developing-countries-ait-thailand?limit=12&start=12#10851 http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/4750-sustainable-decentralized-wastewater-management-in-developing-countries-ait-thailand?limit=12&start=12#10851
Thank you for your message. Yes, I think, this is, probably, the case of "2 thinkers, one thought."

Regards,

F H Mughal]]>
Processing technologies for excreta or faecal sludge Wed, 05 Nov 2014 10:56:36 +0000
Re: Sustainable Decentralized Wastewater Management in Developing Countries (AIT, Thailand) - by: christoph http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/4750-sustainable-decentralized-wastewater-management-in-developing-countries-ait-thailand?limit=12&start=12#10836 http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/4750-sustainable-decentralized-wastewater-management-in-developing-countries-ait-thailand?limit=12&start=12#10836 when daniel posted the video I remembered that I had a look at their page some years ago. They have quite a good description as well
http://www.aquatron.se/start/

Interesting solution. Seems to be the second time that a solution of reinvent the toilet is "reinvented". I don´t know if it is a copy or just "2 thinkers, one thought" as many times with good products.

Here is the picture of the product.



Yours
Christoph]]>
Processing technologies for excreta or faecal sludge Wed, 05 Nov 2014 00:09:16 +0000
Re: Sustainable Decentralized Wastewater Management in Developing Countries (AIT, Thailand) - by: F H Mughal http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/4750-sustainable-decentralized-wastewater-management-in-developing-countries-ait-thailand?limit=12&start=12#10830 http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/4750-sustainable-decentralized-wastewater-management-in-developing-countries-ait-thailand?limit=12&start=12#10830
Thank you for your help. I appreciate

Regards,

F H Mughal]]>
Processing technologies for excreta or faecal sludge Tue, 04 Nov 2014 16:20:34 +0000
Re: Sustainable Decentralized Wastewater Management in Developing Countries (AIT, Thailand) - by: muench http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/4750-sustainable-decentralized-wastewater-management-in-developing-countries-ait-thailand?limit=12&start=12#10821 http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/4750-sustainable-decentralized-wastewater-management-in-developing-countries-ait-thailand?limit=12&start=12#10821 Processing technologies for excreta or faecal sludge Tue, 04 Nov 2014 12:05:16 +0000 Re: Sustainable Decentralized Wastewater Management in Developing Countries (AIT, Thailand) - by: F H Mughal http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/4750-sustainable-decentralized-wastewater-management-in-developing-countries-ait-thailand?limit=12&start=12#10819 http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/4750-sustainable-decentralized-wastewater-management-in-developing-countries-ait-thailand?limit=12&start=12#10819
I'm also looking forward to Thammarat's reply.

F H Mughal]]>
Processing technologies for excreta or faecal sludge Tue, 04 Nov 2014 10:37:08 +0000
Re: Sustainable Decentralized Wastewater Management in Developing Countries (AIT, Thailand) - by: muench http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/4750-sustainable-decentralized-wastewater-management-in-developing-countries-ait-thailand?limit=12&start=12#10818 http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/4750-sustainable-decentralized-wastewater-management-in-developing-countries-ait-thailand?limit=12&start=12#10818
Thanks for your post. How did you find out about this forum?
I am looking forward to Thammarat's reply. Perhaps he never said that the hydrocyclone separator was his idea but perhaps the novel part is its new field of application? I am not sure. Is the hydrocyclone separator patented by your company?

I liked the video that you posted which shows how the flush toilets can be connected to a composting chamber with the help of this hydrocyclone principle which keeps most of the liquid out.

Could you please tell us:
  1. How many of these toilets has your company sold?
  2. For which applications are they mainly used and in which countries?
  3. How much does one of these toilets cost?
  4. How much maintenance costs should one expect?
  5. Is the compost dealt with by the toilet owner or are there also schemes for municipal collection of the compost?

Thanks.

Regards,
Elisabeth


* I think people sometimes don't know where I get the name of the person from: You just click on the user name above his photo, this takes you to the full name of the person who posted (when you are logged in).]]>
Processing technologies for excreta or faecal sludge Tue, 04 Nov 2014 10:27:50 +0000
Re: Sustainable Decentralized Wastewater Management in Developing Countries (AIT, Thailand) - by: aquatron http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/4750-sustainable-decentralized-wastewater-management-in-developing-countries-ait-thailand?limit=12&start=12#10809 http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/4750-sustainable-decentralized-wastewater-management-in-developing-countries-ait-thailand?limit=12&start=12#10809
I'm quite surprised to see an new invention that is a copy of our over 30 years old product...
You can find an old video on the Aquatron separator here:
]]>
Processing technologies for excreta or faecal sludge Mon, 03 Nov 2014 16:11:21 +0000
Re: Exploring New Gen Technology for eToilets - by: sampark http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/3663-self-sustained-etoilet-for-households-urban-semi-urban-public-community-sanitation-eram-scientific-india?limit=12&start=24#10786 http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/3663-self-sustained-etoilet-for-households-urban-semi-urban-public-community-sanitation-eram-scientific-india?limit=12&start=24#10786 It is a Eco-friendly solution to sanitation issues in ULBs, Public places, Hospitals, Corporate Houses, schools, Tourist places . we are in dialogue with Eram solution to implement is all these places , I mentioned.

It would be great if you can arrange funding for my trust to start it in grey areas of Odisha Governmnt.

I have some queries:-(1) Is their any solution for used pads ( During Mensuration) in this e-toilet for the uneducated poor rural women of India ? It may create Choke in auto flushing system of e-Toilet.

2) How it could be promoted in every public places ? Here, I am talking about the price of different models.
3) Do you have any idea on e-Urinals/ Bio Urinals ?

4) Any suggestion to start this type of project in Odisha?


Regards,]]>
Processing technologies for excreta or faecal sludge Mon, 03 Nov 2014 06:00:21 +0000
Re: Vortex bioreactors for the processing of contaminated wastewater (Plymouth Marine Laboratory, UK) - by: mikeallen http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/4152-vortex-bioreactors-for-the-processing-of-contaminated-wastewater-plymouth-marine-laboratory-uk#10606 http://forum.susana.org/forum/categories/105-processing-technologies-for-excreta-or-faecal-sludge/4152-vortex-bioreactors-for-the-processing-of-contaminated-wastewater-plymouth-marine-laboratory-uk#10606
As our 12 month project draws to a close, I thought I'd update you on progress.

Firstly, we've published the first part of the work describing the alginate beads and their bactericidal activity.
You can check out the paper here:
www.plosone.org/article/info%3Adoi%2F10....journal.pone.0096225

There's another manuscript on the bioreactor itself currently undergoing revisions at Journal of Water Process Engineering.

There's a second manuscript under review at PLoSOne on comparing the bioreactor with UV.

And a third manuscript describing the results from our field trials is currently under review at Nature Science Communications.

In the end we managed to get our reactors to:
Chris Buckley's group in South Africa.
Andrew Whitesell's group at Cascade Designs in Seattle.
Bincy Baby at Eram Scientific in Kerala, India.
Christoph Platzer in South America.
And Ajeet Oak in Pune, India. We visited Ajeet's site for a week, earlier in the year to do our own field testing. It worked really well, we were all really happy with the performance of the system. The beads are letting us down a little, but we always knew they would need proper development in the future. The feedback on performance from partners has been really useful to us (Ajeet and Andrew's team are co-authors on the field work manuscript), and hopefully in the future we'll be able to go back to the partners with an updated and improved active agent.

That's all for now!
Cheers
Mike]]>
Processing technologies for excreta or faecal sludge Mon, 20 Oct 2014 13:23:56 +0000