SuSanA - Forum Kunena Site Syndication http://forum.susana.org/ Mon, 23 Jan 2017 12:30:44 +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: Drinking Water From Feces - Bill Gates blog post: This Ingenious Machine Turns Feces Into Drinking Water (sewage sludge, Janicki Omniprocessor) - by: dmrobbins10 http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#20093 http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#20093
Thermal systems for waste co-treatment have limited applicability in countries like the Philippines, which has a ban on thermal processing of waste. But for counties like China, where thermal processes for waste treatment is the norm, the applicability is great. Many of the waste incinerators that serve small towns and cities in China are old and do not provide adequate combustion, resulting in a host of toxic materials being discharged. Upgrading those systems with properly designed thermal systems that accept both fecal and solid waste streams could be a winning strategy for driving measurable environmental health improvements.

I hope that this important research and commercialization efforts in thermal processes for fecal sludge treatment continues. My guess is that they would be very cost competitive with other mechanized technologies like screw presses or activated sludge systems, or lagoons or wetlands when the cost of the land is included.]]>
Faecal sludge management Thu, 12 Jan 2017 22:18:04 +0000
Re: Criteria to assess the safety, sustainability and functionality of the feacal sludge management practice at household level - by: wilfried http://forum.susana.org/component/kunena/53-faecal-sludge-management/19130-criteria-to-assess-the-safety-sustainability-and-functionality-of-the-feacal-sludge-management-practice-at-household-level-cameroon#20086 http://forum.susana.org/component/kunena/53-faecal-sludge-management/19130-criteria-to-assess-the-safety-sustainability-and-functionality-of-the-feacal-sludge-management-practice-at-household-level-cameroon#20086
First of all, I would like to wish you a prosperous year 2017!
I am very sorry for the late reply to your email.

I found the SusanA platform to be a very good place where people usually share their research projects and research ideas especially the WASH-related topics.

As I mentioned communication I posted on the platform (the 23th of September 2016),I would like to know if there is any criteria to assess the safety, sustainability and functionality of on-site sanitation systems in used at household levels of a tropical urban area.

I didn't received responses, but I continue doing internet check and come out helpful informations:
1- I see a very good publication of Jenkins et al. (2014):
Jenkins M.W., Cumming O., Scott B., Cairncross S., 2014. Beyond “improved” towards “safe and sustainable” urban sanitation: assessing the design, management and functionality of sanitation in poor communities of Dar es Salaam, Tanzania. J. Water Sanit. Hyg. Dev. 4, 131. doi:10.2166/washdev.2013.180;
2- I read a recently published book of Stockholm Environmental Institute (SEI)- UN Environment Programme Global Programme of Action for the Protection of the Marine Environment from Land Based Activities (SEI-UNEP-2016-SanWWM&Sustainability), FROM WASTE DISPOSAL TO RESOURCE RECOVERY.

I will very glad if you share with me other additional relevant literature.
Once more thank you very much for recall.

Best regards

Wilfried Letah, Cameroon]]>
Faecal sludge management Thu, 12 Jan 2017 16:53:12 +0000
Re: Bill Gates blog posts: This Ingenious Machine Turns Feces Into Drinking Water (Omni-processor by Janicki to process sludge) - now in Dakar, Senegal - by: mwaniki http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#20024 http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#20024
The way I see it, African cities don’t need machines to convert sludge into drinking water. What is needed is the affordable systems to properly dispose off the fecal waste due to fast expansion of informal settlements.

Priority sanitation options open to programmes for these conditions could be public health and environmental outcomes, financial investment arrangements and partnerships.And may be technologies to convert wastewater for agriculture.And that could be development for the people.

Regards / Mwaniki]]>
Faecal sludge management Mon, 09 Jan 2017 12:22:52 +0000
Re: Bill Gates blog posts: This Ingenious Machine Turns Feces Into Drinking Water (Omni-processor by Janicki to process sludge) - now in Dakar, Senegal - by: pkjha http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#20020 http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#20020 Development of technology is one part. Its applicability is another and important part. A technology has least importance, if not applicable due to social, environmental or financial factors.

Pawan]]>
Faecal sludge management Mon, 09 Jan 2017 07:03:22 +0000
Re: Bill Gates blog posts: This Ingenious Machine Turns Feces Into Drinking Water (Omni-processor by Janicki to process sludge) - now in Dakar, Senegal - by: scottchen http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#20016 http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#20016 I really wish the forum had a Chinese version so that more and more Chinese know what we are talking about.
best wishes
Scott]]>
Faecal sludge management Mon, 09 Jan 2017 01:40:03 +0000
Re: Bill Gates blog posts: This Ingenious Machine Turns Feces Into Drinking Water (Omni-processor by Janicki to process sludge) - now in Dakar, Senegal - by: mwaniki http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#20013 http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#20013
Eng. Mughal raised the question of cost of this technology 2 years ago. The term expensive is relative. I think the people at Bill Gates Foundation are aware of what you have just raised but I guess they want to achieve the tech in a different approach at all costs, regardless of the expense, effort or sacrifice involved.

Warren Buffet was once reported as saying ‘Price is what you pay. Value is what you get’.

Best regards / Mwaniki]]>
Faecal sludge management Sun, 08 Jan 2017 20:16:28 +0000
Re: Bill Gates blog posts: This Ingenious Machine Turns Feces Into Drinking Water (Omni-processor by Janicki to process sludge) - now in Dakar, Senegal - by: Ecowaters http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#19968 http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#19968 I wish Gates Foundation would hire advisors who know the wastewater field.

This system is expensive to operate and requires informed operators.]]>
Faecal sludge management Wed, 04 Jan 2017 02:54:21 +0000
Re: Bill Gates blog posts: This Ingenious Machine Turns Feces Into Drinking Water (Omni-processor by Janicki to process sludge) - now in Dakar, Senegal - by: goeco http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#19959 http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#19959 Faecal sludge management Tue, 03 Jan 2017 00:09:27 +0000 Re: Bill Gates blog posts: This Ingenious Machine Turns Feces Into Drinking Water (Omni-processor by Janicki to process sludge) - now in Dakar, Senegal - by: pkjha http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#19958 http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#19958
Discussion is going on for considerable time. Main issue is external energy required to operate the system. Since the system is already under in Dakar by Janicki,he is requested to provide actual energy balance of the system and its operation and maintenance costs. There is no response from him so far. I remember, he has mentioned in the brochure that the system produces surplus electrical energy to be used by community on purchase basis. Let us have concrete information from him.

regards

pawan]]>
Faecal sludge management Mon, 02 Jan 2017 14:14:49 +0000
Re: Bill Gates blog posts: This Ingenious Machine Turns Feces Into Drinking Water (Omni-processor by Janicki to process sludge) - now in Dakar, Senegal - by: scottchen http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#19956 http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#19956 It sounds great.
The NP in the ash would be very good for the crops.
Let's wait and see the energy efficiency and maintainance cost.
Many thanks.
Scott]]>
Faecal sludge management Mon, 02 Jan 2017 12:51:54 +0000
Re: Bill Gates blog posts: This Ingenious Machine Turns Feces Into Drinking Water (Omni-processor by Janicki to process sludge) - now in Dakar, Senegal - by: goeco http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#19949 http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#19949
from the Janicki website the S200 machine processes 50,000 liters/day and produces 1-2 tonnes per day of ash. Because this is a combustion process there is no organic matter (carbon) left, so no N. The P and K will mostly be retained in the ash, which will hold value as a fertiliser.

cheers
Dean]]>
Faecal sludge management Mon, 02 Jan 2017 01:52:17 +0000
Re: Bill Gates blog posts: This Ingenious Machine Turns Feces Into Drinking Water (Omni-processor by Janicki to process sludge) - now in Dakar, Senegal - by: muench http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#19947 http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#19947 Thanks for returning to this thread and sparking such a lively discussion!

It would indeed be very interesting to know how this machine is working out in Dakar, and how they get around this issue of thickening/dewatering the fecal sludge before it can be processed in the omni-processor. I will send some e-mails in the background to alert the Janicki staff to this thread in case they haven't seen it yet.

Dean: the fecal sludge that is used as a feed to the omni-processor is not just from pit latrines but also from septic tanks (if I understand correctly). Even if flush water for the toilets was minimised the fecal sludge would still be rather liquidy in any case, as it gets pumped out from the septic tank. Also, when pumping fecal sludge from a pit latrine, water is often added to the pit to make it more easily pumpable. So just reducing toilet flush water would not make much any difference in this case.

In my role as moderator I have split off two conversations that started in this thread but that began to deviate from the topic of the omni-processor. This is not to say that the conversations are not important (quite the contrary) but it's just in order to keep things neat and tidy here on the forum.

Therefore, you now find the posts about the AlasCan system here:
forum.susana.org/component/kunena/205-ve...merly-alascan-system
(note it's also been discussed under its more recent name Human Endeavors here:
forum.susana.org/component/kunena/205-ve...in-future-costa-rica )

And the posts about the shower water recycling as started by Sjoerd are here:
forum.susana.org/component/kunena/40-gre...ling-eg-shower-water

If the people involved in those threads (Clint, Sjoerd, Kevin) prefer different thread titles or different sub-categories then please send me an e-mail about that (rather than telling me by forum post), thanks.

Regards,
Elisabeth]]>
Faecal sludge management Sun, 01 Jan 2017 23:13:25 +0000
Re: Bill Gates blog posts: This Ingenious Machine Turns Feces Into Drinking Water (Omni-processor by Janicki to process sludge) - now in Dakar, Senegal - by: kevintayler http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#19942 http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#19942
First, while most wastewater and sludge treatment processes do replicate what nature does naturally, this is not the case with the Omni Processor. It relies on boiling off the liquid from the sludge, which is a very different concept to most treatment processes. As Pawan says, most septage has less than 3% solids and so the machine needs pre-treatment to dewater the sludge. Basically, you are then back to more conventional approaches to treatment and the thing can no longer be described as an Omni Processor

I am not entirely sure why septage quantities in Dakar are so high - the probable explanation is that pits and tanks do not drain because of the high water table but I do not have direct experience of this. I did some work early last year on a treatment plant in Myanmar which had similar problems because the water table was high and most of the 'septage' included water that could not drain away, probably with some that was infiltrating. I very much doubt if the problem is that people are using too much water when flushing toilets. I would expect most toilets in Dakar to be either direct drop pits or pour flush but others will know more about this than me.

The bottom line is surely that the Omni Processor is not an appropriate technology for sludge dewatering]]>
Faecal sludge management Sun, 01 Jan 2017 12:55:05 +0000
Re: Drinking Water From Feces - by: scottchen http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#19939 http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#19939 I have never heard anything about where the NPK goes. Do you have informationa about that?
best wishes
Scott]]>
Faecal sludge management Sun, 01 Jan 2017 09:51:31 +0000
Re: Bill Gates blog posts: This Ingenious Machine Turns Feces Into Drinking Water (Omni-processor by Janicki to process sludge) - now in Dakar, Senegal - by: pkjha http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#19937 http://forum.susana.org/component/kunena/53-faecal-sludge-management/11546-bill-gates-blog-posts-this-ingenious-machine-turns-feces-into-drinking-water-omni-processor-by-janicki-to-process-sludge-now-in-dakar-senegal?limit=12&start=48#19937 As per one paper of Strauss, 1996, Total solids in septage in tropical countries are less than 3 %. Therefore 10 % TS is not expected. In India it is taken as 2% TS only.
The calculation of energy balance from the Omini processor system should be explained by Janicki. It does not appear feasible to adopt the system due to high opex.

pawan]]>
Faecal sludge management Sun, 01 Jan 2017 08:41:00 +0000