UV water purifiers
 

Does anyone have recommendations on a brand of UV water purifier?
There seem to be one heckuva lot of manufacturers and I'd like to weed
it down before starting.

Dick Locke

UV water purifiers
 

Dick Locke wrote in
:

Does anyone have recommendations on a brand of UV water purifier?
There seem to be one heckuva lot of manufacturers and I'd like to weed
it down before starting.

Dick Locke


While UV magic MIGHT kill some bacteria in pond water, calling it water
purification is criminal.....

Of course, I'm the guy with the STEAM DISTILLER that makes PURE WATER, so
pure it doesn't conduct electricity....and tastes supreme with simple
activated carbon polishing to get out the distillates like Benzene, which
attaches itself nicely to activated carbon atoms. (Gives distilled water
that metallic taste.)

UV purification....that's almost funny!

http://www.waterwise.com/productcart...p?idproduct=24
Here's my favorite, a simple kitchen appliance that's very efficient and
makes about 1.2 gallons per load in a couple of hours. The condensor is
stainless steel, the carafe is polycarbonate. Neither creates a taste
and the carafe goes right in the fridge with a tiny footprint.

About 25c/load electric bill...not counting the air conditioning loading
from the Btu pollution coming out the top...(c;

We tested it against the seawater in the Ashley River at home. I
distilled a load of water straight out of the river, downstream from two
sewage plants by the way...tidal water. The resultant output was 3.2ppm
total dissolved solids on the meter and tasted just the same as city
water from the tap. Of course, the difference was in cleaning out the
salt, dissolved mud (well, maybe that wasn't mud) and dead biology left
in the boiler....including one boiled tiny crab.

I bet the crab would have survived UV "purification"....(c;

--
There's amazing intelligence in the Universe.
You can tell because none of them ever called Earth.

UV water purifiers
 

Dick Locke wrote:
Does anyone have recommendations on a brand of UV water purifier?
There seem to be one heckuva lot of manufacturers and I'd like to weed
it down before starting.

Dick Locke

Dick,

UV does not "purify" water. With a high enough single dose, or constant
recirculation at a lower dose, you can "sanitize" water, and you can
break down dissolve ozone. With the amount of power you'd want to
consume on a boat, you'd be hard pressed to accomplish much with a UV unit.

Keith Hughes

UV water purifiers
 

Dick Locke wrote:
Does anyone have recommendations on a brand of UV water purifier?
There seem to be one heckuva lot of manufacturers and I'd like to weed
it down before starting.

Dick Locke

You can find some useful, objective
information he


http://www.lbl.gov/Education/ELSI/Fr...stain21-f.html
UV Water Purification

Chuck

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UV water purifiers
 

I have been happy with several MiniPure UV system that I have had. I have
used them as point of use and, in my last boat, after the water maker prior
to going into the tanks. Smallest unit consumes about 14 watts.


"Keith Hughes" wrote in message
...

Dick Locke wrote:
Does anyone have recommendations on a brand of UV water purifier?
There seem to be one heckuva lot of manufacturers and I'd like to weed
it down before starting.

Dick Locke

Dick,

UV does not "purify" water. With a high enough single dose, or constant
recirculation at a lower dose, you can "sanitize" water, and you can break
down dissolve ozone. With the amount of power you'd want to consume on a
boat, you'd be hard pressed to accomplish much with a UV unit.

Keith Hughes

UV water purifiers
 

On Fri, 15 Sep 2006 17:24:06 -0400, Larry wrote:

Dick Locke wrote in
:

Does anyone have recommendations on a brand of UV water purifier?
There seem to be one heckuva lot of manufacturers and I'd like to weed
it down before starting.

Dick Locke


While UV magic MIGHT kill some bacteria in pond water, calling it water
purification is criminal.....

Of course, I'm the guy with the STEAM DISTILLER that makes PURE WATER, so
pure it doesn't conduct electricity....and tastes supreme with simple
activated carbon polishing to get out the distillates like Benzene, which
attaches itself nicely to activated carbon atoms. (Gives distilled water
that metallic taste.)

UV purification....that's almost funny!

http://www.waterwise.com/productcart...p?idproduct=24
Here's my favorite, a simple kitchen appliance that's very efficient and
makes about 1.2 gallons per load in a couple of hours. The condensor is
stainless steel, the carafe is polycarbonate. Neither creates a taste
and the carafe goes right in the fridge with a tiny footprint.

About 25c/load electric bill...not counting the air conditioning loading
from the Btu pollution coming out the top...(c;

We tested it against the seawater in the Ashley River at home. I
distilled a load of water straight out of the river, downstream from two
sewage plants by the way...tidal water. The resultant output was 3.2ppm
total dissolved solids on the meter and tasted just the same as city
water from the tap. Of course, the difference was in cleaning out the
salt, dissolved mud (well, maybe that wasn't mud) and dead biology left
in the boiler....including one boiled tiny crab.

I bet the crab would have survived UV "purification"....(c;

If I'd said "disinfection" instead of "purification" would it have
been better?

UV water purifiers
 

Dick Locke wrote in
:

If I'd said "disinfection" instead of "purification" would it have
been better?



A little. Only trouble with killing off the bacteria is the bacteria falls
apart, releasing some really nasty toxins into the water, after
"disinfection". This is what happens to people with RO systems. The
bacteria pile up on the membrane then the pressure breaks them down and
releases the toxins into the water flow, right through the membrane because
these toxins are tiny molecules the membrane can't filter....Makes you sick
as a dog. RO people don't like to talk about it....(c;

I have this thing about drinking dead bugs, too. I know I eat dead bugs
every time I put a piece of steak or chicken or dead pig or any veggie,
especially uncooked veggies like lettuce at the salad bar into my pie hole,
so I don't need to be reminded. Hell, the bugs in the salad bars are still
alive! But, I just don't like to drink them...(c;



--
There's amazing intelligence in the Universe.
You can tell because none of them ever called Earth.

UV water purifiers
 

Larry wrote:

Dick Locke wrote in
:


If I'd said "disinfection" instead of "purification" would it have
been better?




A little. Only trouble with killing off the bacteria is the bacteria falls
apart, releasing some really nasty toxins into the water, after
"disinfection". This is what happens to people with RO systems. The
bacteria pile up on the membrane then the pressure breaks them down and
releases the toxins into the water flow, right through the membrane because
these toxins are tiny molecules the membrane can't filter....Makes you sick
as a dog. RO people don't like to talk about it....(c;

I have this thing about drinking dead bugs, too. I know I eat dead bugs
every time I put a piece of steak or chicken or dead pig or any veggie,
especially uncooked veggies like lettuce at the salad bar into my pie hole,
so I don't need to be reminded. Hell, the bugs in the salad bars are still
alive! But, I just don't like to drink them...(c;

Better dead bugs than the live ones I say. We've
been drinking RO water for about five years and
have missed out on a lot of the "flu" that has
gone around our neighborhood. Can't comment on
the toxins except to say that so far they haven't
seemed to make us sick.

One filter and membrane change in five years,
starting from city drinking water, and taking the
dissolved solids down from ~215 PPM to ~10 PPM
while taking out most or all of the bacteria that
has survived the chlorine. ==serious run on
sentence, but I'm gonna let it stand as written.

Larry, you gotta remember that the outside of the
RO membrane is constantly being flushed by the
water running past it. That is why we run 10
gallons of city water for each gallon of RO water
that we make. Now, I only wish that I could plumb
the flush water to water the plants and the lawn,
or something instead of just running it down the
drain.

Don W.

UV water purifiers
 

Don W wrote in news:6J3Pg.3167
:

That is why we run 10
gallons of city water for each gallon of RO water
that we make. Now, I only wish that I could plumb
the flush water to water the plants and the lawn,
or something instead of just running it down the
drain.


Wow...I didn't know it would use a thousand gallons of water just to make
a hundred. I recover about 99.5% with the little distillers. The
boiler's nearly dry when the thermostat cuts it off.

Why couldn't you run the flush water into a 55 gallon drum with an
overflow to the drain, open to the air so there's no backpressure, then
use a sump pump with the float switch built into it in the "tank" to feed
water to the garden and lawn sprinklers? Harbor Freight has some dandy
sump pumps real cheap from the Chinese slavers. You'd have a 55 gallon
"reserve" when you turned it on, draining the tank into the yard when it
would shut itself down. Build it all into a storage building or in the
garage if you have one. I don't run the distiller in the house, except
in winter when I recover 100% of the heat to supplement home heating.
I'll bring it in from my storage building next month and run it from
midnight which eliminates heating the house for another month those
nights it runs.

I may have to reconsider where it's run after I get the Frybrid
(www.frybrid.com) installed in the diesel car. The storage building will
be full of "fuel" in 5 gallon plastic jugs, settling out solids from the
various restaurants for a month before I run it through the polishing
filters and into the car. That's going to consume a lot of space in the
shed...(c; I've got nearly 250 gallons per month promised from a group
of restaurants within a mile of home, if I want it. I'm going to have
free fuel running out my ears, shortly. I think a Frybrid-powered diesel
generator could take me totally off the grid to run nearly for free.
There's oil pouring out of restaurants all across the country, throwing
good fuel into the recycling dumpster they pay to have hauled off. How
stupid is that?

--
There's amazing intelligence in the Universe.
You can tell because none of them ever called Earth.

UV water purifiers
 

Larry wrote:

Wow...I didn't know it would use a thousand gallons of water just to make
a hundred. I recover about 99.5% with the little distillers. The
boiler's nearly dry when the thermostat cuts it off.

Yep, it burns a lot of water for that purified
drinking water.

Why couldn't you run the flush water into a 55 gallon drum with an
overflow to the drain, open to the air so there's no backpressure, then
use a sump pump with the float switch built into it in the "tank" to feed
water to the garden and lawn sprinklers? Harbor Freight has some dandy
sump pumps real cheap from the Chinese slavers. You'd have a 55 gallon
"reserve" when you turned it on, draining the tank into the yard when it
would shut itself down.

Well, the real problem is that the RO system is
installed under my kitchen sink, with the purified
water tap beside the regular faucet. That is real
handy when you want a glass of drinking water, but
not so handy when you want to plumb the flush
water to run somewhere other than down the drain.

Build it all into a storage building or in the
garage if you have one. I don't run the distiller in the house, except
in winter when I recover 100% of the heat to supplement home heating.
I'll bring it in from my storage building next month and run it from
midnight which eliminates heating the house for another month those
nights it runs.

If I built a new house, its would have the RO
system in the garage or a storage building, with a
recirculator and a cistern to use the flush water
for watering the lawn and flushing toilets.

I may have to reconsider where it's run after I get the Frybrid
(www.frybrid.com) installed in the diesel car. The storage building will
be full of "fuel" in 5 gallon plastic jugs, settling out solids from the
various restaurants for a month before I run it through the polishing
filters and into the car. That's going to consume a lot of space in the
shed...(c; I've got nearly 250 gallons per month promised from a group
of restaurants within a mile of home, if I want it. I'm going to have
free fuel running out my ears, shortly. I think a Frybrid-powered diesel
generator could take me totally off the grid to run nearly for free.
There's oil pouring out of restaurants all across the country, throwing
good fuel into the recycling dumpster they pay to have hauled off. How
stupid is that?

Actually, if you are going to go to the trouble to
process vegetable oil for your car, you probably
should put in a diesel genset to run your home
also. You're already going to all of the trouble,
and the additional fuel to run your genset would
not add much additional hassle.

Don W.

UV water purifiers
 

Don W wrote in news:3FpPg.1781
:

If I built a new house, its would have the RO
system in the garage or a storage building, with a
recirculator and a cistern to use the flush water
for watering the lawn and flushing toilets.


You don't need to wait....

http://waterwise.com/

Find some sucker to dump the RO problem on. A good distiller is MUCH
better. Boiled water is 100% safe when it comes from steam!

Oh, and don't let them sell you all this acid crap to make the inside of
the boiler squeaky clean every time, eating the boiler. Just rinse out the
calcium deposits and gook from the boiler once in a while and it's fine....

You can put mud in a distiller and you get perfect water out of it!...(c;

--
There's amazing intelligence in the Universe.
You can tell because none of them ever called Earth.

Solar Distillation, was UV water purifiers
 

Larry wrote:
Don W wrote in news:3FpPg.1781
:


If I built a new house, its would have the RO
system in the garage or a storage building, with a
recirculator and a cistern to use the flush water
for watering the lawn and flushing toilets.



You don't need to wait....

http://waterwise.com/

Find some sucker to dump the RO problem on. A good distiller is MUCH
better. Boiled water is 100% safe when it comes from steam!

Oh, and don't let them sell you all this acid crap to make the inside of
the boiler squeaky clean every time, eating the boiler. Just rinse out the
calcium deposits and gook from the boiler once in a while and it's fine....

You can put mud in a distiller and you get perfect water out of it!...(c;

Actually, my father-in-law has a distiller and
uses it, so I've had a chance to see one up close
and personal. Distillation is a good way to make
purified water, but it does use a fair amount of
electricity.

On a boat it would be interesting to have a solar
powered distiller that used a focusing lense or
reflector to heat the sea-water. Does anyone make
such a device?

Don W.

Solar Distillation, was UV water purifiers
 

Charlie Morgan wrote:

On a boat it would be interesting to have a solar
powered distiller that used a focusing lense or
reflector to heat the sea-water. Does anyone make
such a device?

The problem with both parabolic concentrators and reflectors is that
they need to be on a solar-tracking mount to remain focused. Off angle,
they basically don't work. Using any type of prismatic or Fresnel
arrangement to widen the focusing angle just drops overall efficiency
dramatically. A boat's not necessarily the most stable platform for
keeping a concentrator focused...

Don W.


There are solar water distillers. An 8 square foot panel distills
about 1 gallon per day in strong sunlight.

Distilled water is not completely pure. Some VOC's can still (no pun
intened) be present. Running the water through a carbon filter after
distillation can remove those.

Carbon filters are basically bacterial growth media. If you use one,
use it *before* distillation, not after. Distilled water still has some
dissolved solids, metal ions, carbon, and unless the still incorporates
some form of cyclonic separation, may have bacterial endotoxins. In
reality, these residual levels are of no importance relative to drinking
water.

Keith Hughes

Solar Distillation, was UV water purifiers
 

Charlie Morgan wrote:

There are solar water distillers. An 8 square foot panel distills
about 1 gallon per day in strong sunlight.

Distilled water is not completely pure. Some VOC's can still (no pun
intened) be present. Running the water through a carbon filter after
distillation can remove those.

Hi Charlie,

With 1Kw per square meter of solar power available
on a sunny day it would sure seem like you could
distill more than 1 gallon per day. I'll bet if
Larry feeds his electric still 1KW for 8 hours he
gets more than a gallon out of it. What's up??

Don W.

Solar Distillation, was UV water purifiers
 

Keith Hughes wrote in news:450edfd6$0$10304
:

Carbon filters are basically bacterial growth media. If you use one,
use it *before* distillation, not after. Distilled water still has
some
dissolved solids, metal ions, carbon, and unless the still incorporates
some form of cyclonic separation, may have bacterial endotoxins. In
reality, these residual levels are of no importance relative to
drinking
water.



Nope, I disagree. We use carbon filtration AFTER distillation because
other aromatics distill as good as the water, benzene in particular which
your city water is loaded with. You can taste these enes in the
distillers output. It makes distilled water have a metallic taste. My
commercial monster, 12 gallons per day, uses a carbon column to polish
off the outlet water. My favorite little countertop distiller uses a
carbon packet in the cap of its carafe, which goes into the fridge with
the water.

Either one is quite safe. Bacteria must have FOOD to survive. Distilled
water is not food. Carbon black isn't food, either. I've left the
carbon pack in these distillers for months and never found any bacterial
buildup, no more than is on a clean glass or pitcher, none of which is
the slightest health hazard. No food, no bacteria. No light, no algae,
either.

Your mouth is full of bacteria because there's plenty of food in there.
Without bacteria in your intestines, you'd starve and die. Bacteria are
way overrated, most of them....not ecoli.

This afternoon, I'm enjoying Chef Mavro's signature blend of Lion Kona
coffee that appeared in my mailbox from a friend in Honolulu. I made the
special blend in my Cuisinart beast with pure, fresh distilled water
slowly dripped through a pack of genuine activated carbon from the fish
tank department of WalMart, wrapped in a #4 coffee filter in my distiller
carafe's cap. Chev Mavro's restaurant, where this coffee is served, is
one of the finest restaurant's in Hawaii, my Hawaiian friend tells me. I
love to just try one of his 6-course meals...just once....(c; His coffee
blend is superb!

--
There's amazing intelligence in the Universe.
You can tell because none of them ever called Earth.

Solar Distillation, was UV water purifiers
 

Charlie Morgan wrote:
Hi Charlie,

With 1Kw per square meter of solar power available
on a sunny day it would sure seem like you could
distill more than 1 gallon per day. I'll bet if
Larry feeds his electric still 1KW for 8 hours he
gets more than a gallon out of it. What's up??

Don W.


Where are you getting that figure, and what are you measuing? I'm
talking about a solar still. Sun heating water. No electricity
involved.

CWM

Charlie,

Re-read what I wrote above again. I'm not
referring to electricity--but to the heat power
available from the sunlight. In engineering
school, we measured the power in one square meter
of bright sunlight, and it averaged 1Kw per square
meter in Kansas. It is probably higher than that
closer to the equator.

You mentioned a panel that was 8 square feet that
produced 1 gallon of water per day. 8 square feet
is fairly close to 1 square meter (actually, to be
precise, a square meter is 10.76 square feet, but
close enough).

I had a hard time understanding how a panel with
nearly 8 KWH of energy input could only make one
gallon of distilled water. It must be terribly
inefficient.

And yes, we _both_ are talking about a solar still
with the sunlight heating water--no electricity
involved.

Don W.

Solar Distillation, was UV water purifiers
 

Charlie Morgan wrote in
:

Distilled water is very flat tasting. It's not what I would cal "good
drinking water" Your coffee would no doubt taste better with water
that was purified by other means. Maybe skip the distilling and just
run it through the carbon filters.



The flat taste is caused by the enes, like Benzene. Carbon filtered
distilled water is available. It's called Dasani in any convenience store
and is delicious. Mine tastes just like Dasani, here. Great water. Costs
me about 25c/gallon distilling it myself.



--
There's amazing intelligence in the Universe.
You can tell because none of them ever called Earth.

Solar Distillation, was UV water purifiers
 

Charlie Morgan wrote:

Here's a typical commecially available solar still. I feel these specs are a bit
on the optimistic side.

http://www.solaqua.com/solstils1.html


Here's a do-it-yourself version:

http://www.permapak.net/solarstill.htm

CWM

Interesting stuff. Not very suitable for a boat
though, and the output rate is way too low for a
watermaker. SolAqua (Spanish for SunWater btw)
claims that their Rainmaker 550 makes 1.5 gal/day
and is 60% thermally effecient by their
calculations. I guess that even 100% effeciency
wouldn't get them 3 gpd. Makes a 70 gpd RO
watermaker sound pretty good by comparison.

I started getting interested in this stuff after I
saw that little 70 gallon water tank on our new
boat.

Don W.

Solar Distillation, was UV water purifiers
 

Larry wrote:

Keith Hughes wrote in news:450edfd6$0$10304
:


Carbon filters are basically bacterial growth media. If you use one,
use it *before* distillation, not after. Distilled water still has

some

dissolved solids, metal ions, carbon, and unless the still incorporates
some form of cyclonic separation, may have bacterial endotoxins. In
reality, these residual levels are of no importance relative to

drinking

water.




Nope, I disagree. We use carbon filtration AFTER distillation because
other aromatics distill as good as the water, benzene in particular which
your city water is loaded with.

Uhmmm...if you use the carbon before the still, they are not there to
carryover are they? With the added benefit of chlorine removal, which
is plus for life of stainless steel (assuming you're not trying to
distill seawater, that is).

You can taste these enes in the
distillers output. It makes distilled water have a metallic taste. My
commercial monster, 12 gallons per day,

Monster??? Sorry, I'm just more used to 1000-3000 gp*H* being "monsters" :-)

uses a carbon column to polish
off the outlet water. My favorite little countertop distiller uses a
carbon packet in the cap of its carafe, which goes into the fridge with
the water.

Either one is quite safe. Bacteria must have FOOD to survive.

Which can be found in your distilled water...in the 500-5000 ppb of
organic carbon residual.

Distilled
water is not food. Carbon black isn't food, either. I've left the
carbon pack in these distillers for months and never found any bacterial
buildup, no more than is on a clean glass or pitcher, none of which is
the slightest health hazard. No food, no bacteria. No light, no algae,
either.

Your mouth is full of bacteria because there's plenty of food in there.
Without bacteria in your intestines, you'd starve and die. Bacteria are
way overrated, most of them....not ecoli.

E. coli is not a problem either, as long as you keep it in the right
places. Not a typical water borne bug...unless you're drinking
effluent. Mostly a lot of gram negative bugs with lots of endotoxins.

This afternoon, I'm enjoying Chef Mavro's signature blend of Lion Kona
coffee that appeared in my mailbox from a friend in Honolulu. I made the
special blend in my Cuisinart beast with pure, fresh distilled water
slowly dripped through a pack of genuine activated carbon from the fish
tank department of WalMart, wrapped in a #4 coffee filter in my distiller
carafe's cap. Chev Mavro's restaurant, where this coffee is served, is
one of the finest restaurant's in Hawaii, my Hawaiian friend tells me. I
love to just try one of his 6-course meals...just once....(c; His coffee
blend is superb!

Ughhh! You're talking to someone who can't even stand the *smell* of
coffee, let alone the taste. And yes, carbon afterwards is fine as long
as you change it frequently, don't store it wet, and keep it from all
sources of contamination. Not issues when carbon filtering before
distillation (except changouts of course).

Keith Hughes

Solar Distillation, was UV water purifiers
 

Charlie Morgan wrote in
:

Bzzzzt! Incorrect. The flat taste is caused by the lack of oxygen and
minerals. Mostly by the lack of oxygen.

CWM



Bzzt...Bull****. I've been fooling around with distillers for 20 years.
Just leave out the carbon filtration in water with benzene in it. Yecch.



--
There's amazing intelligence in the Universe.
You can tell because none of them ever called Earth.

Solar Distillation, was UV water purifiers
 

Keith Hughes wrote in news:450f607a$0$10296
:

Uhmmm...if you use the carbon before the still, they are not there to
carryover are they? With the added benefit of chlorine removal, which
is plus for life of stainless steel (assuming you're not trying to
distill seawater, that is).



The trouble with prefilters is capacity. Lots of stuff the distiller is
great at removing, like chlorine and the other additives the government
bureaucrats are trying to poison our children with, like flourine, will
soon consume your activated carbon filter. The filter on the distilled
water side lasts for months without losing effectiveness because there is
so little pollutants consuming the carbon. Most of the pollutants the
prefilter would be consumed by, I simply flush out of the boiler for the
next load.

My reference to "beast" is a comparison rating of how much kitchen floor
space it consumes...more than my water cooler. Just something else to
walk around. Over the years, I've found it much better to use the little
countertop unit, one gallon at a time. I punch the START button as I'm
on my way to bed and let it warm the house at night, of course not in the
South Carolina summer when the house overwarms itself. Garage benches
make wonderful distiller locations out of the air conditioner zones. In
winter, the beast will heat my whole place as long as you leave it
running, conserving energy. It also loses much more steam than the
countertop units do, so it makes the house have that warm, humid feeling.



--
There's amazing intelligence in the Universe.
You can tell because none of them ever called Earth.

Solar Distillation, was UV water purifiers
 

Larry wrote in news:Xns9843578EFEF11noonehomecom@
208.49.80.253:

Uhmmm...if you use the carbon before the still, they are not there to
carryover are they? With the added benefit of chlorine removal, which
is plus for life of stainless steel (assuming you're not trying to
distill seawater, that is).


The MDs, including ones here say:
http://www.medical-library.net/sites...led_water.html

Of course, if you're in the deionizer or stupid filter biz, you say:
http://www.betterwayhealth.com/rever...stilled-water-
filters.asp
which is the exact opposite of what the medical professionals say.

http://www.aquasana.com/Product_which.cfm
Read this hot one from the filter boys.....(c;
I'll make any of them a deal......
1) We'll take all the men from the audience, because of the built-in
taps, and let 'em fill my distiller, your RO tank and any of the filter
boys with guts enough to drink human urine.

2) We'll each "process" our water with our different devices.

3) We'll drink what comes out, all of it.

4) We'll watch the filter boys throw up, even the RO filter boys....(c;

NOTHING produces pure water like steam distillation followed by a simple
activated carbon filter filled with carbon from the fish tank department
at Walmart....

RO is a FILTER. Filters filter out molecules down to a specific size.
Everything smaller flows on through the membrane. Get over it.

I watched it done. I drank the distilled. It tasted just like WATER!



--
There's amazing intelligence in the Universe.
You can tell because none of them ever called Earth.

Solar Distillation, was UV water purifiers
 

Larry wrote in news:Xns9843578EFEF11noonehomecom@
208.49.80.253:

Uhmmm...if you use the carbon before the still, they are not there to
carryover are they? With the added benefit of chlorine removal, which
is plus for life of stainless steel (assuming you're not trying to
distill seawater, that is).


Argonne National Laboratory has solved the RO filter problem! They distill
the RO output....(c;

http://www.newton.dep.anl.gov/askasc.../chem00223.htm

"The industrial R.O. system I monitored at my last position
produced water that conformed to USP specifications, but we also distilled
the R.O. water for lab work. Some analyses require freshly distilled water
(hasn't drawn carbon dioxide from the air)."

--
There's amazing intelligence in the Universe.
You can tell because none of them ever called Earth.

Solar Distillation, was UV water purifiers
 

Larry wrote:
Larry wrote in news:Xns9843578EFEF11noonehomecom@
208.49.80.253:


Uhmmm...if you use the carbon before the still, they are not there to
carryover are they? With the added benefit of chlorine removal, which
is plus for life of stainless steel (assuming you're not trying to
distill seawater, that is).


Argonne National Laboratory has solved the RO filter problem! They distill
the RO output....(c;

http://www.newton.dep.anl.gov/askasc.../chem00223.htm

"The industrial R.O. system I monitored at my last position
produced water that conformed to USP specifications,

Which means exactly nothing. USP specs for what? Potable water? Purified
Water? WFI? Sterile WFI? Water for Irrigation? Each has specific
compendial requirements.

but we also distilled
the R.O. water for lab work. Some analyses require freshly distilled water
(hasn't drawn carbon dioxide from the air)."

Actually, I've never seen a still in lab use in pharmaceuticals.
Typically they use UF systems like a Millipore MilliQ.

None of which however, has anything to do with the point. Carbon
upstream of distillation does *everything* it could do downstream, as
far as removal goes, and does so without microbial concerns.

As for "solving" the RO filter problem, that's *OLD* hat. Been working
with manufacturing various compendial waters, including WFI (water for
injection) for 25 years and yes, distillation is the last step (although
double pass RO may be used, from a compendial perspective, it isn't in
practice).

Carbon beds are always in the front end, never the back end. Then
RO/IEx/EDI, or a combination thereof, in the middle.

Keith Hughes

Solar Distillation, was UV water purifiers
 

Larry wrote:

Larry wrote in news:Xns9843578EFEF11noonehomecom@
208.49.80.253:


Uhmmm...if you use the carbon before the still, they are not there to
carryover are they? With the added benefit of chlorine removal, which
is plus for life of stainless steel (assuming you're not trying to
distill seawater, that is).


The MDs, including ones here say:
http://www.medical-library.net/sites...led_water.html

Of course, if you're in the deionizer or stupid filter biz, you say:
http://www.betterwayhealth.com/rever...stilled-water-
filters.asp
which is the exact opposite of what the medical professionals say.

http://www.aquasana.com/Product_which.cfm
Read this hot one from the filter boys.....(c;
I'll make any of them a deal......
1) We'll take all the men from the audience, because of the built-in
taps, and let 'em fill my distiller, your RO tank and any of the filter
boys with guts enough to drink human urine.

2) We'll each "process" our water with our different devices.

3) We'll drink what comes out, all of it.

4) We'll watch the filter boys throw up, even the RO filter boys....(c;

NOTHING produces pure water like steam distillation followed by a simple
activated carbon filter filled with carbon from the fish tank department
at Walmart....

You still got it backwards...whatever you do *after* distillation will
introduce *some* form of contamination. Gauranteed. 'Course maybe you
like the taste of carbon fines.

RO is a FILTER. Filters filter out molecules down to a specific size.
Everything smaller flows on through the membrane. Get over it.

Get over what? You're the one harping on filters. Were you stung by an
RO unit as a child perhaps? This was a carbon before or after
distillation discussion.

I watched it done. I drank the distilled. It tasted just like WATER!

And?

Keith Hughes