Mostly I am interested in companies already involved in domestic use in the USA . I read the MF article, but I am interested in those who have been invested over the last year about their choices and why? I am concerned about the restrictions ( environmental and otherwise) for future development on the west coast.
Thoughts?
YR
Mostly I am interested in companies already involved in domestic use in the USA…
Whilst waiting for other input, you may find a short write-up about Santa Barbara’s Desalination plant. There are two drop-down very short and general statements about the ‘history of’ and ‘improvement in technology’ concerning their towns attempts at the process.
At the bottom of the linked page are links to ‘Additional Information’.
https://santabarbaraca.gov/government/departments/public-wor…
An important take-away from the Santa Barbara Plant is… When they experienced a drought and decided to re-start the plant… it took two years to get it going again.
Reverse osmosis is very expensive energy intensive water. My only experience was in a marina in Bonaire, paid through the nose! An added problem also shared by rain water is the lack of the minerals present in groundwater.
While it might be a necessity in some places it’s not a technology I would invest in.
With so much emphasis on solar, I wonder why they haven’t invented a solar still.
https://www.google.com/search?client=safari&rls=en&q…
It seems they have!
The Captain
I think Caterpillar is the safest choice. They are likely to participate in whatever path is chosen.
From yesterday:
https://www.kpbs.org/news/local/2022/08/11/newsom-california…
California should invest tens of billions of dollars in water recycling, storage and desalination over the next two decades to shore up its supply as the state gets drier and hotter, Gov. Gavin Newsom said in a proposal released Thursday.
Mike
Oh no, Gavin and I are on the same page??? I have to go purge!
YR
One thing individuals or localities or states can do immediately is to always construct towards segregating clean, gray, and black water.
You can EASILY cut back your total water usage by 90% if you have the right pipes and a little self discipline above the “don’t leave the clean water running while you brush your teeth” level.
I like long showers and it takes a while for the hot water to get to the showerhead. That all that water gets used as “gray water” to safely help speed the growth of my newly planted forest is a plus. etc etc etc
david fb
The question in front of CA is whether their major engineering schools can harness graphene desalination techniques on an industrial scale. The industrial scale being the most important piece of that. It does not have to be a CA school. The CA money in part I assume will go for CA engineering.
One thing individuals or localities or states can do immediately is to always construct towards segregating clean, gray, and black water.
That will help on new construction, but there’s a lot of existing structure out there…
(They already do separate the clean “white” water.)
You can EASILY cut back your total water usage by 90% if you have the right pipes and a little self discipline above the “don’t leave the clean water running while you brush your teeth” level.
I would question the 90% figure, unless there’s a major design shift. Some savings, yes, but 90%?
You see, the (ahem) “solids” in black water need a certain amount of water to keep them moving. Low-flow toilets are already identified as a significant contributing factor in plugging up some cities’ sewer systems. Separating the grey water and not running it through the same pipes will make that situation much worse.
Now if we want to put everyone on RV-type wastewater systems…
That would involve a “black” tank under every toilet. RV toilets are different, rather than a P-trap (named for its shape, not its contents), they have a valve at the bottom. And the black tank is literally, directly, under the toilet; there are no bends in the pipe. So anything that goes down the toilet WILL make it to the black tank; the amount of water used doesn’t matter.
And you WANT water to accumulate in the black tank, until it’s nearly full. (In our motorhome, with the two of us, that’s about two weeks.) So the solids have time and opportunity to become rather less solid. Then after it’s emptied you want to add a few gallons of water, so even anything that stayed behind - let alone the first new deposit - can immediately begin breaking down.
Grey water - that’s your household waste water from all sources except the toilets - is less fussy, because there’s rather less solid stuff. RVs also have grey-water tanks, but the main reason not to leave the sewer line hooked up and that valve open is that you want some grey water to sort-of-clean the sewer hose after dumping the black tank.
“Mostly I am interested in companies already involved in domestic use in the USA .”
World-wide companies:
https://www.yahoo.com/video/15-largest-desalination-companie…
US companies
https://www.environmental-expert.com/companies/keyword-water…
General info
https://theimpactinvestor.com/desalination-stocks/
Howie52
Generally utilities are a more rounded investment.