Re: Potable Water in Conjunction with Shipping Containers as Housing
03/10/2010 1:58 PM
1. Firefox seems faster at loading pages than IE (at least earlier versions of IE). Personal impression, not actual measurements.
2. Firefox appears less susceptible to malware, better pop-up blocking (again, comparing older versions of IE to newer versions of Firefox. Maybe not valid with newer versions of IE). Again, impressions, not scientific analysis.
3. I do not believe IE works under Linux, but I have never tried it.
Chrome seems to load pages a whole lot faster than Firefox or IE, but earlier versions of Chrome seem to have problems loading some types of content (at least in the Linux version).
Re: Potable Water in Conjunction with Shipping Containers as Housing
03/08/2010 1:36 PM
Off topic, but back in the day, I worked for Johnson Controls as a drafter, and created workstation schematics for a couple of water filtration plants. The first was a Ultra Pure water plant for Nortel's semiconductor manufacturing facilities (Kanata ON) (Each zone in the image was clickable adn would take you to a larger zone view)
(and don't expect me to know too much about how it all works.. I'm just good at drawing schematics simplifying the complex)
and the second was for schools after a water scare.
if anyone wants larger versions - pm me with your email address.
Re: Potable Water in Conjunction with Shipping Containers as Housing
03/10/2010 10:33 PM
The LifeStraw was a device I was trying to recall a couple of weeks ago as a personal water filter. It has some serious potential for this application, and is a whole lot cheaper than bottled water. Limitation is 700 liters of water. How to you get people to throw it away and acquire a new one when it has been used up? I have seen other announcements of this product. I find it difficult to believe that $2.00 per unit is the correct price...I want one or ten or 100...
Re: Potable Water in Conjunction with Shipping Containers as Housing
03/10/2010 10:36 PM
Another good approach, but not quite priced for the economically challenged...UV sources generally have about 1 year life expectancy, befrore the lightwave frequency drifts out of the effective range...Great work, Chris
Re: Potable Water in Conjunction with Shipping Containers as Housing
03/11/2010 12:12 AM
Just in case anyone missed it on the main thread:
Were this a CR4 usual thread, it is fully
understandable that folk search about for perfect technology and new
ways.
It is also useful to identify the end
picture and retro engineer, so stage 1 is not full tear-down to move to
stage 2,
and so on.
However this is now a Haiti thread – so has a finite context.
The water problem in Haiti is a catchment
infrastructure absence despite a huge rainfall.
The Haiti water (and irrigation)
infrastructure was broken and will be broken again, if not by hurricane
or earthquake,
by same cost of maintaining a foreign technology by a country with
nothing and
85% of the population living on what they can daily steal.
Water is not a technology intervention opportunity,
in fact it's a technology intervention caused disaster – to wit – a bled
dry
and now salt degrading aquifer, polluted and silted reservoirs, dead
pumps and
shattered mains.
Basically it was and is irresponsible to think
in terms of technology that is not sustainable on local resources, or
dirt
simple and cheap to import, until a local production / skill-set, can be
established.
But - No matter how you look at
desalination it does not fit Haiti.
It is uncompetitive with free rain.
It is a continuing overhead.
It is reliant on imported technology.
Its infrastructure makes the same
earthquake and hurricane vulnerable mistake.
Can
Haiti do this?
Multi-stage flash distillation (MSF) is a water desalination
process that distillssea water by flashing a
portion of the water into steam in multiple stages of what are
essentially regenerative
heat exchangers. Reverse
osmosis plants are the most common type, but multi-stage flash
distillation
plants produce over 85 percent of all desalinated water in the world.
Such plants can operate at 23-27kWh/m3
of distilled water
In addition, MSF distillation plants,
especially large ones, are often paired with power plants in a co-generation
configuration. Waste heat from the power plant is used to heat the
seawater,
providing cooling for the power plant at the same time. This reduces the
energy needed by one-half to
two-thirds, which drastically alters the economics of the plant, since
energy
is by far the largest operating cost of MSF plants.
Reverse osmosis, MSF distillation's main
competitor, requires more pretreatment of the seawater and more
maintenance, as
well as energy in the form of work (electricity, mechanical power) as
opposed
to cheaper low-grade waste heat.
I could sell them an alternate powered
system tomorrow – but even Wiki sees: "However, there remain issues as
to how
these developing countries will be able to incorporate this new
technology into
their economy without creating a dependency on foreign assistance."
And when the next hurricane or earthquake
or parts problem, disables any part of the system or mass storage or
distribution – Haiti is back at square1.
What
Haiti can do is a solar energy powered solution that
replaces wells.
When I put up the tarp solution and local
capture/use – it was a considered solution on all above,
including the now and future Haiti context
Tarps* = canvas = grow Jute or Hemp
or abacá or Sisal – make your own canvas and
rope – then cloth and thread = export the eco products to westerners
running
out of oil.
Do read the links carefully – relate the
crops to Haiti topography, soil types, erosion problems and climate
zones
(altitude). Note such as fertilizer demands (imports) and markets,
product
ranges, by-products and specs like UV resistance and even rot.
*Yes the water solution and Haiti
sustainable future solution is in that one word.
Re: Potable Water in Conjunction with Shipping Containers as Housing
03/11/2010 9:18 PM
Garthh,
very true about the state of the water aquifer is fully described in the 1995-99 USACE water report.......Florida has the same problem and the US Knows better?
Besides MSF systems, the big Thermo-copressor units from MECO and Aquachem can do the same with a little less power /M3 around 16 to 21Kwh/M3 and can work from cold...heating helps and reduces the Kwh requirements to around 12 to 18 Kwh/M3.
Yes RO too expensive and needs well trained people from the get go.
The best thing for Haiti would be a series of distillation plants filling a number of large tanks (Modu type tanks) with flexible bladders inside...won't collapse/break in a quake (EPDM types last twenty to thirty years if left alone)...could build slightly below ground. Then use tanker trucks to fill portable Frac-tanks in community areas, where people can easily come and get water (give each family/house hold a an easily moveable 50 liter plastic container with a removable top and a carrying handle ring of steel (so two people can carry or place loop of rope around each handle up and with a bar thru and on there shoulders...backs are stronger)
Then no need for piping infrastructure...sorry to say may also need communal toilets like Chris288 suggested...composting or use Honey suckers to drain and then sanitize and make compost somewhere else with refuse/garbage etc.
Here are some numbers
Transcendian came up with to call with polite communications as
people die. See if you can get something good to happen.
Try Beau Mills at 919-859-5999
Try Merorores at 212-370-4840
Haiti Mission to the UN.
Try Unicef at 1-800-486-4233
Try Countryman & McDaniel
at 310-342-6500
Try Christian Lopez of Latino
Housing Development at 716-881-7051
Try 212-963-1234 and see who
you get and what they want you to do. It's the number for the UN.
Try 509-229-800 and ask for
Kenneth H/Merten. He's one I aint got to bothering yet. See if he
knows Raymond Joseph at 202-332-4070. (check number.) For USAID try
202-712-4007, ask for Mike.
Try 202-271-4416. Bette Cook.
The list is not in order. Mr.
Lopez is attempting to get shipping container housing to Haiti, and
deserves support. Countryman and McDaniels have information and
contacts we need. We do need the UN to act right, but making that
happen will be tough. USAID has already told us to go to hell, and
all US Government agencys seem to defer to them
Re: Potable Water in Conjunction with Shipping Containers as Housing
03/25/2010 9:43 PM
This certainly doesn't qualify as 'potable water', but I didn't know where else to post it.
The PeePoo (couldn't they have come up with a better name?!), a chemically treated toilet bag that sterilizes human waste and converts it to fertilizer, all for only two or three cents, is being used in slum areas of Kenya. Human waste being pretty much the same everywhere, I'm sure this could be a cheap low-tech solution for Haiti or any other emergency situation in need of sanitation engineering.
The secret of the PeePoo lies with the urea coating on the inside of the bag. Once its filled and buried, enzymes in feces naturally breakdown the urea into ammonia and carbonate. This raises the pH in the bag, killing any pathogens. Once the urea decontaminates the waste, the bag biodegrades, and the remaining ammonia fertilizes the soil.
Re: Potable Water in Conjunction with Shipping Containers as Housing
03/25/2010 10:07 PM
And what language options for the instruction manuals? Actually, sue, this is a tremendous idea, but I am not sure how you sell the idea to Haitians, who have lived in a world where flush toilets are a sign of wealth...In other places, burying waste is common practice, but i wonder about Haiti...
Re: Potable Water in Conjunction with Shipping Containers as Housing
03/25/2010 10:15 PM
Thanks guys. But I was thinking of its use for people in dire straits, as in the immediate aftermath of earthquake, hurricane, etc., when sanitary services may be disrupted and wanton disposal of, um, disposables can result in health hazards.
It could be a stop-gap (poor choice of words?) measure until sewer infrastructure is restored.
Instruction manuals! Great! Then they can have reading material, too, while they....
Re: Potable Water in Conjunction with Shipping Containers as Housing
03/26/2010 2:23 PM
I think it would be much easier to have a bag like this, and to hang it on the hooks below the seat of your one-hole chair. (double bag when necessary) When finished, both liquid and solid in the bag can be sealed up and personally transported to a nearby black composting container. the chair can also have a simple curtain to draw around it for privacy.
Re: Potable Water in Conjunction with Shipping Containers as Housing
03/26/2010 2:57 PM
carrying on with that idea... make it so the bag is not transported within the container shelter by... well you get the idea. I guess there should be an access door on the outside as well.. so that if you are using the 'facilities' during a storm, that the bag doesn't get ripped off and blown around the neighborhood. With an arrangement like this, you could even store several bags in the box.. or for that matter, if you wanted, you could have a pit below the container for a traditional outhouse style..
but I like the idea of walking it to the compost container... there is a certain awareness and sense of personal responsibility that comes with that action.. and if everyone else is doing it, it won't have any stigma except good stewardship attached to it, when the 'product' is used for growing food.
Re: Potable Water in Conjunction with Shipping Containers as Housing
03/30/2010 12:40 AM
I haven't but it came out of discussion today with a web designer and his advisement to another for dissemination and demographic probability rather than speculation. Apparently it's well thought of as such a tool.
So there it is mate
__________________
If death came with a warning there would be a whole lot less of it.
Re: Potable Water in Conjunction with Shipping Containers as Housing
03/26/2010 2:21 PM
Sue, thanks for the correction in my posted figures. Somewhere else in the original Shipping Containers for Housing/Shelter blog someone posted that the illiteracy rate was somewhere between 80 -to - 90%. I wish someone had verified these numbers. Unfortunately I got caught unawares, so MY BAD. It's good to see that your figure is much better, and relieves my mind some.
Again, thank you!
__________________
"Veni, Vidi, Vici"; hendiatris attributed to Gaius Julius Caesar, 47 B.C.
Re: Potable Water in Conjunction with Shipping Containers as Housing
05/27/2010 1:09 AM
.Just as background Im project lead for project proposal for Haiti; I came accross this site link through Garth. One of toughest part of the planning is water, sanitation and flood control..Somehow they are all part and parcel of the solution- not the problem. The water comes down from the sky as clean potable water no? Thats represents million$ of water treatment infrastructure savings.
So far what Ive got (feel to correct or point out discrepancies):
640sqft roof area for a 4-5 person family home
=59.457946m2
Average rainfall 54in to 78in per year <-------------revised as per statistics compiled for south of Haiti.
http://www.oreworld.org/images/r_1993-2008/1993-2008%20in.pdf
http://www.www.eoearth.org/article/Water_profile_of_Haiti
=1.3716m\365 days= 3.76mm to 5.43mm a day
gutters sized for peak intensity 50mm/hour- cisterns sized for max. capacity
223liters to 302liters \day FROM 600sqft ROOF AREA RAIN CAPTURE
500sqft living area
=46.45152m2
4.6m2 per person therefore space for 10 maximum
223/10=22.3 to 30.2 liters per day insufficient for daily use but an improvement to
Haiti average water use stats OF 15LITERS PER DAY PER PERSON (http://www.data360.org/dsg.aspx?Data_Set_Group_Id=757)
Ideally there should be approx. 100 liters per person better than or equal to China's present per capita use.
Rain capture must be extended with communal cisterns or wells.
To size the gutters correctly. answered thanks to Chad's suggestions (http://haitirewired.wired.com/group/engineering) and the NewZealand/Australia gutter box online calculator http://www.roof-gutter-design.com.au/testing/downpipe.html (thnks google)
turns out that one 6 six inch downpipe and 16sqin.gutter for one 600sqft sloped roof is very sufficient to handle a 4inch/hour rain intensity.
Question 1: Assumptions above correct?
Question 2: Cistern sizing= water volume on roof from max one hour intensity rainfall expected from region. Overflow to nearby catchment lake..
Question 3: Great now I have 55gallon tanks full of rainwater with some bird poo
and a swimming pool size pond of water from last months monsoons. How do I make it drinkable? A three layered approach
personal: lifestraw (con: they wear out how do you get another?)
family: ceramic filter in pitchers?
house: can I build a sand, charcoal filter inside a 55gallon drum? that can be cleaned and refurbished? Captain Moosie had some posts for large scale requirements..how does sand filter sizing and maintenance work for 4-6peson household scale?
community (30buildings):cisterns plumbing sand filters (wait wasn't that water clean???????) so far good? NO! because according this report:
http://www.cwsagh.org/downloads/rainwater_harvesting.pdf its cheaper to drill boreholes than set up cisterns with related plumbing!! Now what? throw away that almost clean water..Flush tank water? to where ? there's no sewer mains to flush. And the boreholes dry up then what? drill another?
Re: Potable Water in Conjunction with Shipping Containers as Housing
05/27/2010 2:12 AM
Bwire and Kyzine did most of the work on water for Haitian by Haitians at household and village scale. Spread sheets in Excel exist for these calculations - have Garth give you Kyzines gmail address.
Using your 59 m2 area, and one family, not a village:
Note storage for the dryer season is nearly equal to half of a 40 ft container
Storage for the flow rates are larger than 50 gallon drums would easily hold. However plastic lined containers can be made for this purpose. Filtration is best in two parts. First by a filter made from shade cloth to catch leaves and similar. Second by the pottery solution - which Haitians can make.
Sterilization can be by chlorine or as Bwire suggests iodine or if none are available by boiling. But rain water that is free of most organic matter is better than most town supplies, if it is caught and stored properly.
You may be interested in this thread for ideas and principals of capture and storage.
Re: Potable Water in Conjunction with Shipping Containers as Housing
05/27/2010 6:27 PM
My research has indicated that ground water in Haiti has been pretty much contaminated as a result of deforestation and over-extraction. I have some MIT studies that supplement this assessment for those interested. Wells do not appear to be a viable solution in the metropolitan areas...
Re: Potable Water in Conjunction with Shipping Containers as Housing
05/27/2010 6:21 PM
One of the "products" I offer here in Panama is rainwater systems for capturing, treating and maintaining quality of rain water for potable water applications. The system is only applicable to rural environments- urban environments have way too many air contaminants (mostly from internal combustion engines). We collect the rain water from roofs (never off the ground) in large cisterns. The cisterns are sized to meet the requirements for the dry season- I use 150 gallons per day per person (which is quite high, but appropriate for "upsacale" installations that can afford the systems). A second tank, called the "day tank" serves as the primary source of potable water. The water in the cistern and in the daytank is recirculated, with an ozone generator between them (the ozone-treated water flows in to the cistern- idea being to control biological growth in the main storage tank). The water from the day tank is passed through an activated charcoal filter before final use. Properly engineered, the water produced is significantly safer than water available from other sources (including "properly treated" municipal water).
The most expensive parts of the systems we provide are the pumps and the electricity to operate them. The ozone generator and recirculation pump could actually be run from a solar panel, although this is not generally a cost-effective solution if other sources of electricity are available. The activated carbon is also quite expensive, but tends to last quite a long time, if the filter is properly sized.
The systems I design and install most likely are not directly applicable to Haiti, because of the cost of equipment and the maintenance costs. However, I can recommend sizing your cisterns to meet dry season requirements- you can catch enough water in buckets under the roof leaks to cover the rainy season. Do not think in terms of 55 gallon drums- use bladders. Install the bladders such that they expand as water is collected, and contract as water is extracted- minimal exposure to air. "Bird poop" is an over-blown concern- however, rat and squirrel poop may not be. Ozone is the most effective oxidizer (i.e., anti-bilogical agent) avaliable today, but must be used appropriately- no residual, like chlorine, but also no nasty byproducts (such as one encounters with chlorine).
Flood control is a matter of reforestation. This is not something the NGO's are going to approve, because it reduces the opportunity for major construction projects. Trees reduce run-off, resulting in recharging subterranean aquifers (the water actually slows down enough to soak in to the ground). Forested areas near the major streams also help reduce pollution by controlling how much contaminated topsoil gets washed in to the streams.
Sanitation- have a look at constructed wetlands. Use nature's own processes where you can.
For further, more detailed discussions, contact me by PM.
Re: Potable Water in Conjunction with Shipping Containers as Housing
05/27/2010 7:08 PM
That was my thought when analysis is brought to its logical conclusion in terms of cost :
Boreholes cost less but dry up, catching rain is more expensive when treated but letting nature do its own sand filter trick saves a ton of $$$money: the missing part in the life support system is the trees. Now the calculation is how many trees needed to catch the rain long enough to refill acquifers?
A trick is a catchment artificial lake surrounded by trees. I found out that Haiti had this all along: the lake
Pandiassou project does exactly that and more. Im thinking a gabion retaining wall ditch to direct flood waters to a lake.
But for the drinking water: not exactly a turn key system: so your ozone system is still a good option. Maybe a pump connected to the lake to fill a cistern on demand through your charcoal filter and ozoned.
Re: Potable Water in Conjunction with Shipping Containers as Housing
05/27/2010 9:08 PM
Question 3: Great now I have 55gallon tanks full of rainwater with some bird poo and a swimming pool size pond of water from last months monsoons. How do I make it drinkable? A three layered approach
personal: lifestraw (con: they wear out how do you get another?)
family: ceramic filter in pitchers?
house: can I build a sand, charcoal filter inside a 55gallon drum? that can be cleaned and refurbished? Captain Moosie had some posts for large scale requirements..how does sand filter sizing and maintenance work for 4-6peson household scale?
community (30buildings):cisterns plumbing sand filters (wait wasn't that water clean???????) so far good? NO! because according this report:
http://www.cwsagh.org/downloads/rainwater_harvesting.pdf its cheaper to drill boreholes than set up cisterns with related plumbing!! Now what? throw away that almost clean water..Flush tank water? to where ? there's no sewer mains to flush. And the boreholes dry up then what? drill another?
Re: Potable Water in Conjunction with Shipping Containers as Housing
05/27/2010 10:27 PM
Ok Ok mark this solved:
between what cwarner7_11 said and Captain Moosie & Co. said and what my dad did last summer and what Brother Armand did in Haiti for thirty years with artificial lakes (not to mention Russia's answer to NASA's space pen) I'VE GOT THE ANSWER:
Flood water-->gabion wall ditches-->lake-->pumped-->ozone filter system--->TRevi swimming pool covered cisterns---->pump-->house drinkable water plumbing--->waste gray water---flushing--to closed concrete septic tank--->pump-->biodigester-->|everything sanitary air tight in concrete lined pits.
The problem was scale: correct me if Im wrong :hoping this works for about 20 houses to 30 houses and fill in the capacities for total pump wattage to see if a few 10kw wind generators can run the thing and have juice left over to boil 20 pots of rice each night. For bigger scales ask Captain Moosie to call the GOH because that's way out of my league.
What did my dad do last summer? what Warner was saying except in reverse and maybe a lot cheaper: use a swimming pool to store drinking water (rather than use drinking water to fill a swimming pool). My dad at his cottage would pump water from a stream into his swimming pool where it gets chlorine clean.
You guys have so many good answers I couldn't put together all those shiny parts. There's enough left over for a city.
Good Answers:
"Almost" Good Answers: