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 Moderated by: bartmanaz Page:    1  2  Next Page Last Page  
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Desal plant bid awarded  Rate Topic 
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 Posted: Fri Jan 12th, 2018 11:30 am
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RichD
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The desalination plant near Empalme is scheduled to start this summer.
https://www.desalination.biz/news/0/FCC-Aqualia-bid-wins-Sonora-Mexico-desalination-project/8915/

The project calls for the design, construction, operation and maintenance of a desalination plant in order to supply potable water to Sonora state. It consists of extracting water from five beach wells, filtering it and sending to the cities of Guaymas and Empalme through an aqueduct. The plant is set to be built under a public-private partnership (PPP).

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 Posted: Fri Jan 12th, 2018 03:03 pm
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lasninas
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Excellent news!  Thanks for posting. 

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 Posted: Fri Jan 12th, 2018 03:30 pm
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Hook
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It would be a shame if this EXPENSIVE water is delivered through the same leaky system. CEA needs to get their chit together.


Desal sure looks like the only viable solution for this area. This is good news, IMO.


I am a little leery that San Carlos will subsidize the cost of the water with higher bills that Guaymas and Empalme, like many other things.

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 Posted: Sat Jan 13th, 2018 02:50 pm
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RichD
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There are lots of questions about this project. What is a public-private partnership? CEA does not seem to have money to buy spare parts for wells etc, how will they find the money for this? Would this water be available to San Carlos? Not much value in speculating so will just see what happens. I seriously doubt this will impact SC water situation in my lifetime.

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 Posted: Sat Jan 13th, 2018 03:57 pm
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Bullshipper
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When they truck well water to you house, what does that cost?

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 Posted: Sat Jan 13th, 2018 05:13 pm
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frankie
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it is my understanding that the desal plant is only to supplement the water usage in guaymas/emplame! 
our water comes from wells east of town!!

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 Posted: Sat Jan 13th, 2018 07:19 pm
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hans
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Lets see.....To much Politics is going on this Year here in Mexico.

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 Posted: Mon Jan 15th, 2018 11:07 pm
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IronMan
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Don't feel like the Lone Ranger Hans!! :shock:

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 Posted: Tue Jan 16th, 2018 02:10 pm
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RichD
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Desalination seems like a no brainer at first until you consider all the factors. It is expensive, and there is the matter of how to dispose of the salt that is extracted. The process uses a lot of electricity which will be generated by burning natural gas. If you discharge the high salt content brine back into the ocean you create dead zones. It might be the only solution but it is not environmentally friendly.

It is not a viable solution for producing all of the water that Guaymas/Empalme uses but will supplement it.

The largest plant producing water for municipal use in the US is in Carlsbad, California. It provides less than 10 percent of water for San Diego County.

https://en.wikipedia.org/wiki/Claude_%22Bud%22_Lewis_Carlsbad_Desalination_Plant

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 Posted: Tue Jan 16th, 2018 02:50 pm
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Bullshipper
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RichD wrote: Desalination seems like a no brainer at first until you consider all the factors. It is expensive, and there is the matter of how to dispose of the salt that is extracted. The process uses a lot of electricity which will be generated by burning natural gas. If you discharge the high salt content brine back into the ocean you create dead zones. It might be the only solution but it is not environmentally friendly.

It is not a viable solution for producing all of the water that Guaymas/Empalme uses but will supplement it.

The largest plant producing water for municipal use in the US is in Carlsbad, California. It provides less than 10 percent of water for San Diego County.

https://en.wikipedia.org/wiki/Claude_%22Bud%22_Lewis_Carlsbad_Desalination_Plant


If they use high salinity water from the ocean the plant has to be larger, the intake aparati is more expensive, and at best, the plant will only produce 1/2 the fresh water it processes upping the operation cost too.
But it says it will use water from existing wells, that probably are just a little too salty now that they are darwing down the aquifier below sea level and they are getting salt water intrusion, just like most of the agricultural wells in Hermosillo coastal area too that is largely abandoned due to salty wells. 
They are checking the water levels and salininity in SC wells yearly, so it wouldn't be a surpise to me to see this in our near future too.

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 Posted: Tue Jan 16th, 2018 03:00 pm
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RichD
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As I read it, the plant calls for creating new 'beach' wells. I assume this is to take advantage of some filtration from the sand.


I did not see anything about using water from existing wells. Did I miss something?

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 Posted: Wed Jan 17th, 2018 01:30 am
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Bullshipper
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Where did you read that new wells were to be drilled Rich?
Have a link?

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 Posted: Wed Jan 17th, 2018 02:26 am
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RichD
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I do not have a link. I am going on the plan that Al showed as his presentation of water issues. It showed the proposal of the desal plant as having shallow beach wells on the site of the plant that would serve as intake. Besides the proximity or the CFE plant for power, I think the site in Cochorit was chosen for access to sea water and a way to dispose of brine. My assumptions only.

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 Posted: Wed Jan 17th, 2018 06:31 pm
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Bullshipper
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Well it looks like you have more info than I.
That location surprizes me as beach wells are usually very low producing wells in terms of gpm because of all the silt, even with special screens and gravel packs.

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 Posted: Wed Jan 17th, 2018 06:57 pm
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RichD
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I am not an expert on hurricanes or desalination but both topics interest me. The Carlsbad plant is also next to a power plant and uses sea water that is first used for cooling at the power plant. That would make more sense to me.

Here is a link that talks about the beach wells. It does not specifically say they are new wells but I know of no other beach wells with that kind of capacity.

https://www.bnamericas.com/project-profile/en/planta-desalinizadora-de-guaymas-y-empalme-planta-desalinizadora-de-guaymas-y-empalme

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 Posted: Thu Jan 18th, 2018 03:06 pm
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kiteboarder
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If you want facts instead of rumors and opinions you can go here: http://www.desaladora.sonora.gob.mx/transparencia.html

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 Posted: Thu Jan 18th, 2018 03:09 pm
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lasninas
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Facts and transparency instead of rumors?  Thanks Kiteboard, now we're talking!

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 Posted: Thu Jan 18th, 2018 03:39 pm
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RichD
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Thanks Don. A lot of information and technical data there. Hard for those not fluent to grasp some of it. Was downloading presentations and documents but think I need some time outdoors. One thing I came across was the pipeline from the plant to the nearest tank of the existing water distribution. An 11km 16 inch line will carry water from the plant. Still could not figure out what the public private partnership is all about.

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 Posted: Thu Jan 18th, 2018 11:57 pm
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kiteboarder
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I don't remember the details about the partnership but for an investment of 51% of the cost of the plant the private investors will have a license to sell water produced for 20 years. The plan includes something like a million dollars a year for fixing existing infrastructure with the goal of fixing 20% of the leaks.
The other 49% is federal money.
Here is a link to the raw water wells information: http://www.desaladora.sonora.gob.mx/images/transparencia/estudios/B11-diseno-obras-de-captacion.pdf

Last edited on Fri Jan 19th, 2018 12:15 am by kiteboarder

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 Posted: Fri Jan 19th, 2018 01:54 am
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Bullshipper
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The study estimates about 4 wells that can pump up to 1500 gallons each to the plant, with an extra in case one goes down.

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