SuSanA - Forum Kunena Site Syndication Fri, 24 Jun 2016 22:17:49 +0000 Kunena 1.6 SuSanA - Forum en-gb Re: [SuSanA forum] Re: New strategy stops pollution and saves the plant nutrients for future recovery (new Smart Toilet from Sweden, a new type of composting toilet) (User interface technology innovations) - by: hajo
Thanks for your posting.

If I understand your response well, the CompostEra environment is not optimal for ‘happy’ worms, which otherwise would require more service and maintenance inputs (I add) ‘by observing/ensuring appropriate temperature, moisture, acidity, and ventilation’.

In the CompostEra the worms ‘survive somehow’ and contribute to the composting process ‘somehow’ (otherwise you could save the extra expenses of adding them) but the process is not ‘almost perfect’ vermi-composting (as I believed) but surprises you by ‘a quite complex web of various micro- and macro- organisms participating in the breakdown of organic substance’ which can be kickstarted by adding ‘a bucket of warm water in the spring’.

That is good to know and we will now make our own experiments whether the worms will survive and contribute also in a similar environment in an earth pit which will be fed with human excreta through pour flush (i.e. little water, max 4L per flush) and where the fluids will percolate away through the soil and where soil microbes will assist our worms in the breakdown of the excreta.

If the worms do not survive it really does not matter as our system of two alternating pits does not depend on the worms… they could just extent the emptying cycle and produce probably better quality ‘pit humus’.

… and I will not ask you again for your customers’ names..

User interface technology innovations Fri, 17 Jun 2016 09:15:52 +0000
Re: [SuSanA forum] Re: New strategy stops pollution and saves the plant nutrients for future recovery (new Smart Toilet from Sweden, a new type of composting toilet) (User interface technology innovations) - by: CompostEra I agree that a happy worm is very useful in processing toilet residue but if we designed a toilet system to optimize for worms, we automatically add serious service and maintenance and we couldn't offer systems to the variety of situations that we do now. I will also say that the curves offered to represent how process proceeds are conceptual ... the actual breakdown is much less tidy but I'm myself surprized how the job long term handles itself quite well, and if we have one recommendation how to kickstart a sluggish process, it would be to add a bucket of warm water in the spring ... dryness is no friend of most contributors.
If you want testamonials, I cannot give my customers name away and if anonymous, the worth is near zero
All the best
User interface technology innovations Thu, 16 Jun 2016 22:10:23 +0000
Re: [SuSanA forum] Re: New strategy stops pollution and saves the plant nutrients for future recovery (new Smart Toilet from Sweden, a new type of composting toilet) (User interface technology innovations) - by: hajo
I fully agree with you that composting ‘is a quite complex web of various micro- and macro- organisms participating in the breakdown of organic substance’.

Maybe it is ‘nit-picking’ but I would call it only ‘vermi-composting’ if worms contribute to the process (at least something if not considerable). But they will only do so if they are ‘happy’ which I am still not sure whether the CompostEra will provide the right environment for.

You may still try to convince me otherwise and in order not to violate your customers’ privacy you may send my email to them and they can contact me if they like so (

In a discussion today with some Tanzanian colleagues about sanitation options for Tanzanian peri-/urban areas, we found one interesting solution which can somehow be blended with vermi-composting: the pour flush toilet with twin pits. You find details in the EAWAG ‘Compendium of Sanitation Systems and Technologies, 2nd Edition’, page 68, collection and storage S6. With a diameter of 1m and a depth of 2m, the volume should last for 3 years when used by 10 people.

Our idea is to add composting worms to the pit in use. The conditions in the pit may be very similar to those in a CompostEra. If they are happy, they will contribute to shrinkage and eventually to extension of the useful time of one pit and also to a better quality of the compost. If they do not survive, the system will at least continue functioning as designed in the Compendium (we will build two pits).

Because the twin pits will not work in impermeable soils, in rock and in high GW table, we ‘developed’ the following alternative idea: we will dig in 2m3 PE tanks which will have a false floor on which the solids will accumulate and below the fluids (pour flush water and urine). The fluids will have to be pumped out (handpump or sucking with motorised pump) once a week and be disposed of in the central Waste Stabilization Ponds. Then we have almost the CompostEra made of local material and adapted to our conditions. Thanks for your inputs.

If we are lucky we produce good compost, if not we have at least an improved, sustainable sanitation system for which we can hope to develop also a sustainable service chain and we can get away from the troublesome pit latrines.

I am not so happy that we still use flush water although very low quantity but the pour flush also has advantages as the gooseneck in the squat plat prevents the dumping of solid waste in the pit which currently is a big obstacle when trying to empty a latrine pit. Further we can try to install low flush equipment which makes possibly use of the hand-washing water.

I invite you and everybody to comment on our ideas.

User interface technology innovations Thu, 16 Jun 2016 17:30:00 +0000
Re: [SuSanA forum] Re: New strategy stops pollution and saves the plant nutrients for future recovery (new Smart Toilet from Sweden, a new type of composting toilet) (User interface technology innovations) - by: clint
I am in Manual Antonio Costa Rica now installing an ozone injection laundry greywater treatment and recycling system at the Costa Verde Hotel to help reduce the need for energy for hot water, water consumption and the use of chemicals (soap) by massive percentages.

My use of ozone has now increased from utilizing it in disinfection and the breakdown of organics in the greywater for total recycling to potable water qualities to my company's newly established laundry division. Ozone is truly amazing but there are some issues especially in humid countries such as Costa Rica. I am utilizing DeltaWash ozone and air drier technologies and they are responding very effectively to the humidity.

Regarding composting of human excrement, I totally agree with Carl that Mother Nature has an army of organisms and more magic other than worms in naturally converting human excrement and kitchen organics into usable soil amendments. Aristotle called worms "The intestines of the Universe" and I, as well as Carl believe that composting can be accomplished without them, but with them and the correct composting mixture, Mother Nature can use ALL of the tools in her tool box.

From my HANDS ON composting experiences worms require a varied diet, which HAS to include kitchen organics. Just trying to get worms to eat toilet resources makes for a very unhappy worm.

I think I have tried to promote the concept that if you are actually going to try to shrink, reduce, compost, treat or whatever you want to call dealing with human excrement you need to have;
1. An acceptable toilet with a transportation system.
2. A vessel capable of providing the MUCH needed oxygen to all critters, including worms throughout the composting mass, not just on the side walls or on the top surface.
3. A bulking/carbon source
4. A method of soil amendment, liquid and solid, removal.

It is time to go for the morning 2 Kilometer swim around the ocean rocks.

Talk to you later.

User interface technology innovations Wed, 15 Jun 2016 12:32:18 +0000
New strategy stops pollution and saves the plant nutrients for future recovery (new Smart Toilet from Sweden, a new type of composting toilet) - by: CompostEra
Now you are making statements that are far from any concensus in the literature, research nor experiences. You say:
this will only happen, if the environment is conducive for the worms

I don’t know where you got that from ? will only happen ?? May I remind you and Clint Elston and others that biological degradation is NOT only taking place through worm activitiy there is a quite complex web of various micro- and macro- organisms participating in the break down of organic substance. Some are sequential and some are operating independent of others ... see below and this is only some:

Regarding sending you testimonials from my customers re. the process … I can only say that I will not violate my customers privacy (by promise to them). And, I will not respond to Clint Elstons public accusations … I think your request is out of order and we can talk about that but I will not publicise my clients infor in this forum .

All the best
User interface technology innovations Mon, 13 Jun 2016 12:21:52 +0000
Re: [SuSanA forum] Re: New strategy stops pollution and saves the plant nutrients for future recovery (new Smart Toilet from Sweden, a new type of composting toilet) (User interface technology innovations) - by: hajo
Thanks for your response… I never did or would ask on the forum about somebody’s character… and I hope everybody will now restrain from personal bickering and concentrate on professional information…

Of course you would not comment ‘blatantly negative’ on your own product, nobody expects you to do so. You explain that the shrinking process sometimes goes slower, sometimes faster. Because faeces are 70% water, I guess the first shrinkage is mostly by de-hydration of the faeces. But the further shrinkage is by the vermi-composting.

And this will only happen, if the environment is conducive for the worms, basically they need to survive and even better if they are ‘happy’ (Appelhof): ‘to make the worms happy, you’ll need to think about temperature, moisture, acidity, and ventilation’, so that they multiply and keep ‘going’. And some of the conditions are also necessary to keep the processes aerobic and odour-free.

Therefore I kindly ask you to send me the emails of some of your satisfied customers, so that I can contact and ask them how happy they (and their worms ) are. I guess that people who employ worms to eat their poo, do not mind to talk about it ..

User interface technology innovations Mon, 13 Jun 2016 07:44:22 +0000
Re: [SuSanA forum] Re: New strategy stops pollution and saves the plant nutrients for future recovery (new Smart Toilet from Sweden, a new type of composting toilet) (User interface technology innovations) - by: CompostEra
You are right ... the animosities are right under the surface when old previous friends turned enemies are asked to comment on each others work or character. You asked for references and I can send you a few of these from clients who had had systems, they are very happy with but you need to be aware of the limited worth of testimonials in general, especially those provided by the manufacturer as well as those provided by the ”public”. I have never seen a testimonial supplied by the maker of a product that is blatantly negative … have you ? … it’s just in the nature of things.

Now let me comment on the strategy smart toilet ! A strategy is not a product nor reporting on a product … when we say that SmartToilet encloses the ”waste” in isolation and shrinks it, it means just that. The containment is absolute, but the shrinking is relative to a lot of factors ... too many to predict how much it will shrink and how fast. We have seen systems fill up much faster than predicted and systems that go on for much longer. That does not change the concept of containment and shrinkage, which takes place even if the rate varies. When this strategy is adopted by a larger corporation or communal organisation many of those questions work themselves out as reputation: AUDI has a reputation of excellent customer service, which it has built during many years. Smart toilet is too young to have a reputation either way but I draw from other experiences from older systems. As a general concept I have faith that we are on the right track: We provide a product that does not aggravate the user but rather the opposite … our clients are uniformly very happy with the visual side of things and the fact that it does never smell.

So it provides comfort both aesthetically and experientially … our customers are very happy with a toilet that never smells, never clogs, never needs to be flushed several times to see the waste flush away or being flushed repeatedly because it does not get clean on the inside of the bowl… Of course things can lierally break like what would happen if you kick the toilet hard enough. A fan can break just like an engine can break in our AUDI ! But you then replace it and it is good to go again. A flush toilet has valves and fittings and pipes under pressure that can break, leak freeze etc. This is what we mean by resilience … not much can go wrong with this process: you pile up the organic excreta and sometimes it shrinks quickly and some times more slowly but the long term average is what counts and there is not much that can go wrong with time and decay !

We consciously do not try to optimize, speed up, rely on mechanical devices that WILL break down and when they do are inside of an environment that does not invite repairs !!! So that is what a smart toilet is and does. It is conceptually easy to grasp and easy to see how it can work or not work … the worst that can happen is that it doesn’t break down and shrink fast enough to keep up with expectations. It has little to do with carbon/nitrogen quotas, water content, how many worms are in residence or all the parameters that varies in its own fashion. All our customers are primarily concerned about conceptual breakdowns and failures like spilling the waste out on the floor or any such catastrophic events. We find that sometimes a user is worrying about the rate of decomposition because it seems like an extrapolation will result in an imminent filling up and we then remind them that they may have to have a bit of icy nerves and just wait and see how it plays out … and most of the time you learn that procrastination is your friend. All the things you learn is so crucial to do, just doesn't really matter …

The process strategy is better explained in the flipchart especially

The real process curve is usually not as tidy as all that.

User interface technology innovations Sun, 12 Jun 2016 23:42:34 +0000
Re: New strategy stops pollution and saves the plant nutrients for future recovery (new Smart Toilet from Sweden, a new type of composting toilet) - by: hajo
I feel a bit bad having ignited this discussion which brings a lot of animosities to the surface… I thought this was a professional forum, where I can learn and exchange a lot… but I notice (and not for the first time) that for whatever reason animosities between members surface… and the knowledge exchange suffers…

even by now I do not know whether the CompostEra/Smart Toilet (ST) may work or not work in the way it is described in the respective websites… my doubts come from what I read about vermi-composting which describe the need for aeration, bulking agent, carbon source, mixing, harvesting, … which all is not part of the ST…

I asked the forum, what they know about the ST system and all I received was more personal animosities than technical info… and when I asked you to provide me with contacts of users, you did not respond so far…

I still like to believe that the ST works as I cannot imagine that you can sell a product in Sweden at 4,000 EUR which does not work… but then you should have a number of satisfied customers in Sweden who can confirm so…

I am still interested in technical information on the ST but no more in personal bickering… please all, stop this!

User interface technology innovations Sun, 12 Jun 2016 17:25:33 +0000
Re: New strategy stops pollution and saves the plant nutrients for future recovery (new Smart Toilet from Sweden, a new type of composting toilet) - by: CompostEra And how on earth would you know that ??? There are many systems that stay contained and shrinking the solids even though not called SmartToilets. I for one have one from 1939 in my backyard still in operation. But Clint, ... maybe you should mention that you are one of the disgruntled ...
What about your own Clivus variations ... are they still working ?
Let's not get into mudslinging in this forum.]]>
User interface technology innovations Sun, 12 Jun 2016 06:25:32 +0000
Re: New strategy stops pollution and saves the plant nutrients for future recovery (new Smart Toilet from Sweden, a new type of composting toilet) - by: clint
In the beginning the first Clivus had several inverted v-shaped air channels in the mid-section to provide the much needed air for adequate aeration of the interior of the composting mass. The problem was that those multiple air channels restricted the mass from settling when a person was trying to scoop out the finished compost at the bottom of the non-working sloping glacial floor concept.

Another previous disgruntled Clivus distributor, Glen Nelson, came up with air channels on the side walls to help at least provide air to the side composting surfaces vertically with no restrictions as with the previous Clivus design. I tried those also but Glen's tank as well as all of the others, the compost sits on the bottom of the tank with no potential for oxygen getting down to the bottom.

Glen also incorporates a manual composting mixing system similar to our automated mixing agitation system on our tanks.

I have no idea who has invented the composting concept that a composting mass can sit there unattended with no carbon source, without any maintenance to remove the hydrocarbons, which do not compost, for more than one or two years.

Carl is going to have a difficult time introducing you to one of HIS Smart Toilets in operation for several years because there are none!

Our technologies are based upon 45 years of hands-on development and the majority of installations in actual single family residences instead of the public facility market, which is where Clivus and Glen make their money. You will also determine that our technologies address ALL aspects of water and sanitation instead of just thinking that the toilet is the only players in the water and wastewater treatment industry. What about food scraps and the resulting solid waste industry?

As I stated before, composting needs oxygen and should be maintained from the top to the bottom with designs that facilitate the addition of a carbon source, a regular method of mixing and removal.

The french fry basket idea that we have perfected works perfectly and the augers make it much easier to recover the valuable composted/vermiculture worm casting resources. The liquid is liquid and not mixed with finished compost and is easily transferred to the compost tea reservoir with the float activated pump. The agitators are a major factor in the aeration of the fresh compost into the top surfaces for the worms to eat and the aerobic organisms to appreciate the Ferris Wheel ride along with a couple of worms free wheeling.

Our tanks are low-profile and double-walled for containment and strength. With the amount of pressure that can be created with a box full of poo on the side walls of any tank should be considered in the specifications of the "Smart Toilet" manufactured end-product.

To help facilitate your research. There are very few large composting tank manufacturers and survivors. All of the large designs are manual and do not provide adequate mixing, aeration and removal components. We made ours automated because humanity is lazy and does not like to deal with poo.

Over the past 45 years we have learned that no matter what system you want to utilize you HAVE to have a managed monitoring and maintenance program that is independent of the homeowner. A decentralized infrastructure with a paid work force from the profits of the sale of the fertilizer resources. There are lots of little composters that do not work at all.

Good luck in your research as you dig into the "History of the Pioneers in the Composting Toilet Industry".

I am attaching a draft of an article I recently wrote concerning water supply and the need for changes in the plumbing supply system.

User interface technology innovations Sun, 29 May 2016 13:27:19 +0000
Re: New strategy stops pollution and saves the plant nutrients for future recovery (new Smart Toilet from Sweden, a new type of composting toilet) - by: hajo
Besides Clint’s quite critical comments on the Clivus/CompostEra system, I have also received other emails privately which point in the same direction. Unfortunately most comments do not detail what possibly does not work with that system, but rather advertise/promote their own system (Human Endeavors, ECOLOO) as more 'perfect' composting systems.

Thus I want to emphasise, that our crucial aim is a ‘sustainable’ sanitation chain. If at a certain stage or with additional processes the products can be re-used as compost or fertiliser, that is an extra but not the primary target.

Therefore again the questions: can the CompostEra system fulfil its promises of safeguarding human excreta for long time without much maintenance, while producing continuously ‘compost tea’ as fertilizer and eventually some compost accumulated in the container after 30 years on the basis of vermi-composting as described on their website.

In the spite of the critical comments, it is hard to believe that a system is marketed at 3-4,000 EUR in Europe which does not deliver as promised. Would the product not be off the market due to bad reputation?

I consider it should not be necessary to buy a CompostEra/Smart Toilet myself and try over several years to find whether it works or not. @Carl, can you possibly provide a list of customers who are more or less satisfied with the system (since 5, 10 or more years) and who I can contact by email. We are planning city-wide sanitation chains in Moshi and we need to know whether the technique of the Smart Toilet is a possible solution without piloting them.

I have been surprised during these discussions what ‘competition’ exists between different suppliers of these types of composting toilets.

User interface technology innovations Sun, 29 May 2016 12:04:14 +0000
Re: New strategy stops pollution and saves the plant nutrients for future recovery (new Smart Toilet from Sweden, a new type of composting toilet) - by: clint
The answers to all of your questions regarding the "Smart Toilet" have the same answer.

The "Smart Toilet's" design is not based upon 45 years of "hands on" experience, it has no operational credibility and any comparisons to actual composting and vermiculture principles and requirements for biological operation defies all of them.

My experiences with the Clivus Multrum company and products for over 45 years, has been one of sheer frustration, lack of trust and disappointment. I could go on for chapters with stories and business experiences with Clivus that were more than problematic. Enough said!

I now understand your region's dislike for community system's. On an individual homeowner/hut basis then I would still recommend individual manual compost tanks. After visiting Costa Rica this winter I have come up with a much less expensive, lower profile, non-automated bottom section of my two section tank with the suspended floor, augers and agitators still involved in the process only squished down into a lower profile version. I have eliminated the entire top section as that design was for cold locations with the sealed top section to keep the warmth in and the cold out. In warm developing climates the whole top section is unnecessary and you only need the bottom 24" h x 47" w x 88" l.

I sincerely believe that no matter where you are trying to compost anything you should have a properly designed vessel and that means air, bulking agent and methods of separating the liquids from the solids and a removal system for each.

My concept of composting is a top feeder with the material being mixed on top, augers to remove the finished compost easily and a liquid separation (perforated false floor) system to prevent anaerobic activity.

After manufacturing several versions and models of my own composting tank over the past 45 years, (welded aluminum, fiberglass, polyureas amd urethanes, polyethylene) there are 45 years of mistakes and corrections that have been adjusted in my tanks to make them operate at the greatest potential for composting and vermiculture production and operation. I really do not know how you can make poo disappear without some form of primary and secondary containment (our tanks are double walled), aeration, bulking agent addition system and frequency and harvesting.

If you are trying to come up with some form of concrete dyi idea, I would suggest that the villager's time would be better spent peddling an electrical generation machine and/or educating them on the operation of true composting systems than wasting time trying to, as the Gates Foundation thinks the academic world is going to solve, "Re-Invent the Toilet".

The World Bank and every other funding organization can afford to buy recycled non-automated, composting tanks, which can be manufactured in country to double utilize that funding for employment and economic development.

User interface technology innovations Thu, 26 May 2016 13:49:39 +0000
Re: New strategy stops pollution and saves the plant nutrients for future recovery (new Smart Toilet from Sweden, a new type of composting toilet) - by: hajo
Thank you for your posting and the attachments which again confirm my impression that your solutions are possibly very appropriate and applicable in US, but I doubt that they help us to contain our sanitation problems in African towns. Your techniques aim at recirculating water, produce drinking water and compost of high(est) standard.

Our problem is to replace pit latrines with something more sustainable which means ‘no sewer’ and possibly ‘no flush water’.

Because you are conversant with the Clivus/CompostEra/Smart Toilet (ST) system, I like to have your opinion/comments on the following whereby you should have in mind that our aim is NOT perfect compost but just a working toilet, which in context of the ST means ‘safe containment of human excreta for 40 years’:

1. The ST has no false floor to separate pile and fluids. This may lead to anaerobic processes in the lower layer. Can this affect the performance of the whole system?

2. The ST has no air circulation system which may lead to anaerobic processes even in middle layers. Same question?

3. The ST system does not require a bulking agent/carbon source. Can red worms handle pure excreta (in case of washers) or mixed with toilet paper (for wipers)?

And just for your information: communal toilets are not very popular in Tanzania (as opposed to Ghana), maintenance or rather the lack of it is a wide-spread problem in Africa, and - we still have a long way to go making human excreta being accepted as a resource. Cattle, pig and chicken manure, YES, but human poo, NO!

User interface technology innovations Thu, 26 May 2016 12:52:55 +0000
Re: New strategy stops pollution and saves the plant nutrients for future recovery (new Smart Toilet from Sweden, a new type of composting toilet) - by: clint
It is nice to meet and communicate with someone concerning solutions for "Developing,Third-World-Poor" countries.

I became involved with Clivus because I was impressed with a box that could make "stuff" disappear as Carl claims. This was back in the 70's "Hippie, Mother Earth News Generation". After selling, installing and servicing several Clivus installations of my own as well as servicing other Clivus dealer's installations in New Mexico it became clear that nobody knew anything about composting and that the Clivus design with the sloping floor and internal air channels had problems.

As a result of an alternative sanitation solution Clivus project for the US Army National Guard in Alaska with its remote armories in Bush Eskimo villages, I became involved at the request of Clivus because I had just moved to Healy, AK in 1982. After accomplishing the impossible of installing one of their systems above the Arctic Circle in Selawick, AK near Kotzebue in December of 1983, the Director of the Agency in charge requested that I design and produce an improved version under contract with the National Guard to meet Alaska's remote "Developing Country, cold conditions".

That contract gave me the opportunity to get into the manufacturing entity of the composting business and my first versions were just as simple as the Clivus and had the same problems;
1. Air channels restricted the removal of the finished compost on the bottom of the tank.
2. The glacial sloping floor does not work and you have to dig it out by hand.
3. Because the material is directly on the bottom of the tank, you are correct, the liquids turn anaerobic and everything turns into a soup instead of having the liquids separated from the finished compost as our systems does through design.

The one question that you asked that I forgot to address, which is probably the most important point in all of your questions, is the bulking agent.

I utilize pine bedding and I add it consistently to insure that the composting mass has an adequate carbon source. It is also essential to provide adequate aeration (porosity) for the entire composting mass.

I invented the agitators because all composting/outhouse/vault/pit designs end up with a pile of stuff too strong for vermiculture to act upon , as Carl points out. The agitators mix the stuff with the carbon source, add porosity and push the new stuff to the top side walls of the tank where the worms eat. Our tanks are low-profile for several reasons but worms eat at the top and defecate at the bottom, so our tanks provide a shorter distance for the worms to go to the toilet on the bottom of the tank where the augers remove worm castings and liquid compost tea with a float switch activated pump.

It is true that our focus has been to create the StarTrek version of water and sanitation for space as well as Planet Earth but he basics of composting are simple and can be duplicated anywhere with a little imagination.

First, in high density locations I believe that the concept of a community toilet, shower and laundry location, locally maintained by trained paid persons who receive their money from the profits derived from the easy auger driven harvesting and sale of worm castings and liquid fertilizers is an immediate workable solution.

I also believe that the investment in a properly designed composting/vermiculture tank is essential to any attempt to provide effective sanitation anywhere. Our polyethylene tanks cost less than $250.00 each to manufacture out of recycled polyethylene and are the heart of success.

A tank with manual agitators, a turbine fan, a bale of pine bedding (leaves) and a micro-flush toilet will work anywhere.

Everything needs maintenance and has to be adequately financed. Because our tanks produce a resource instead of a waste problem, economic reality is possible instead of a financial drain. The existing community systems in Alaska represent an attempt but utilized a stupid lagoon in frozen country and did not provide a revenue stream to maintain systems that were funded without any funding from and for their own input.

Any "Developing and Developed Country" needs to understand that sanitation is a RESOURCE and not a waste and needs to be addressed with technologies that have the potential and design to adequately convert/transform those Creator given substances back into reusable sources of food production to complete the cycle of existence of eating and pooing.

Alaska provided me with more extreme challenges that even McGuyver has dad to deal with on TV. If the pits that are presently being dug were simply lined with plastic and a carbon source was added with each use the composting would happen more than adequately if you have the bottom designed to support the mass, provide air and allow the liquids to filter through to be collected on the bottom would work but it is much more work than manufacturing tanks professionally and transporting them to the locations. Our tanks are designed to separate in the middle to make them easy to transport and install, unlike all of the other composters. Our greywater tanks also nest for shipping.

As I stated earlier I am moving to Costa Rica and planning on helping rural communities with profits I can make in the hotel laundry water recycling business. Let the tourists pay to have clean sheets and the profits used to provide water and sanitation and jobs for the locals.

I am enclosing a new article I just produced on an experiment with RO and eliminating water softeners and chloride discharges without losing any water.

Anything I can do to help, just let me know.

User interface technology innovations Wed, 25 May 2016 13:11:15 +0000
Re: New strategy stops pollution and saves the plant nutrients for future recovery (new Smart Toilet from Sweden, a new type of composting toilet) - by: hajo
Thank you for your response to my post and questions. Having viewed your video, I have two comments to make: 1) the Human Endeavors approach is a high-tech solution aimed at western/ US households and fulfilling western/US standards/requirements regarding black and grey water treatment, and 2) it comprises black and grey water treatment.

I stay in Africa and our requirements are much lower at this point. We only look at human excreta treatment and this with the lowest possible technical input, lowest possible costs and lowest possible O&M effort. We have to find sustainable/affordable alternatives for thousands of pit latrines in high density areas of towns which pollute groundwater, environment and are threat to public health.

The CompostEra/Smart Toilet seems to me a possible answer. Your post contains some hints that you are also very conversant with that technical approach and that you are critical of it: ‘1) … Clivus Multrum Distributor; 2) … introduced redworms; 3) … provide better aeration for vermiculture and eliminated any anaerobic potential with the perforated suspended floor for air circulation; 4) … mix the fresh materials; 5) … augers on the bottom to harvest; 6)… we have disagreed on just about every aspect of composting toilets’.

Would you mind to let me/us know where you see the snags of the 'CompostEra technique' and how you propose to tackle them? If you do not want to discuss it in public, you may write to my email.

Thanks and ciao,
User interface technology innovations Wed, 25 May 2016 07:53:15 +0000