Harmful effects of desalination on the environment

Harmful effects of desalination on the environment

Borja Montaño and Martin Sevilla

 

The environmental impact of desalination is threefold:

- The effect of returning the brine water to the sea.

- The effect of CO2 emissions resulting from power consumption.

- The visual impact of the desalination plant.

 

The possible negative effect of returning brine water to the sea  is the most publicized consequence of desalination, though as of 2008 its effects are not a cause for concern in Spain, as investment to prevent environmental damage from brine has produced positive results. Discretional returns to the sea of the brine produced during the desalination process would increase the salinity of the sea water at the point of release, affecting the surrounding ecosystem. On Spain’s Mediterranean coast, Posidonia oceanica would be damaged, but marine studies are carried out where the brine is to be returned to the sea to avoid this, ensuring that the brine is dumped in desert areas where the salinity cannot harm these algae. To dump the brine in these conditions, conduits often need to be built to avoid the Posidonia fields, piping the brine into a safe area of the sea.

Visual impact may be the kind of environmental damage that receives the least attention, due to the fact that the location of desalination plants has not led to any serious visual problems. However, the possible visual impact requires efforts from both public and private bodies to optimize the location of these plants. There are currently plans to build a plant in Mutxamel, which has led to a series of problems in this regard, as the plant will be located in an area not on the coast, with an intake of sea water from the dyke at the mouth of the Río Seco. This alternative[1], which has been studied by the Environment Ministry, prevents both the coastal area of the Serra Gelada and the Serra Gelada nature park in Benidorm from being affected.

 

 

 

 

Regarding CO2 emissions linked to desalination, it should be made clear that it is not the desalination process itself that produces these emissions, but rather the power consumption required for the process. As has occurred with the effects of the visual impact and returning brine to the sea, there have been considerable improvements in recent years with regard to power consumption. In 1990, power consumption for desalination was around 8.5 kWh/m3, whereas in 2004 this figure was down to around 3.8 kWh/m3. New energy recovery systems mean this rate can be reduced to 2.7 kWh/m3.

If we suppose that desalination plants work at a power consumption rate of 3.5 kWh/m3, they emit 1.9 kg CO2/m3. CO2 emissions in desalination are highly affected by the country’s energy efficiency. In Spain, 51% of electricity is generated from heat sources. If the country were to convert to a system such as in France, where 73% of power is nuclear, emissions would be reduced by four, and if Spain converted to the Norwegian system, where 99% of energy has a hydroelectric source, CO2 emissions would be divided by 14.

Therefore, desalination itself is not directly responsible for CO2 emissions; it is rather the power consumption involved, in both quantitative and qualitative terms. To reduce CO2 emissions, the current Ministry has committed to producing as much energy through renewable sources as necessary to compensate electricity consumption from the new AGUA program desalination plants.



[1] “Alternative 1, option 3”.


36 Responses to “Harmful effects of desalination on the environment

  • 1
    Pirsey
    abril 24th, 2009 13:14

    This is quite a hot information. I think I’ll share it on Digg.

  • 2
    ronoInserma
    mayo 20th, 2009 17:29

    Great info – hope to definitely come back soon!

  • 3
    home made wind generators
    junio 27th, 2009 12:19

    Good blog=D will visit soon=)

  • 4
    fast online payday loans
    julio 22nd, 2009 10:22

    fast online payday loans…

    Very usefull. Thanks! fast online payday loans…

  • 5
    Lakisha Bevard
    marzo 30th, 2010 15:03

    http://adriananthonys.webs.com/apps/blog/

  • 6
    iklan gratis
    agosto 12th, 2010 20:00

    Nice info, makasih sharing nya

  • 7
    Keneth Dowdle
    septiembre 24th, 2010 18:08

    I followed to look over your post and it looks like to have sense in addition to the information all over it.. How I wish to understand a lot more about your future posts and I will check forwards on it. I am insurance author and I’m checking out better method to boost my writing talent, so this will help me a lot.

  • 8
    Recuperar Archivos Formateados
    noviembre 4th, 2010 13:23

    Es muy interesante todo lo vertido en este post. Te agrego a mi lector de noticias, sigue así

  • 9
    cam sex breda
    enero 12th, 2011 18:35

    After an initial period as a prisoner in which his lone friend is fellow dungeon denizen Horatio (Jason Segel), he finds favor with the royal family – King Theodore (Billy Connolly), Queen Isabelle (Catherine Tate), and Princess Mary (Emily Blunt) – and becomes Lilliput’s protector, displaying disgruntled General Edward (Chris O’Dowd).

  • 10
    cfnm videos
    enero 13th, 2011 00:38

    It isn’t everyday that I come across such incredible work. I just had to pass by and say that this is very brilliant. Please continue with the greatness as we are awaiting for more.

  • 11
    Annika Harang
    enero 13th, 2011 07:47

    Fantastic beat ! I would like to apprentice while you amend your web site, how could i subscribe for a blog website? The account aided me a appropriate deal. I have been tiny bit acquainted of this your broadcast offered shiny clear concept

  • 12
    bail bonds
    enero 13th, 2011 10:50

    superb blog & writing skills. you make this look easy lol. Keep up the great work I’ll be back to read more of your posts later my friend!

  • 13
    Cam Girls
    enero 13th, 2011 11:46

    Hi,Still I sang our joys, clutching to him ever so tightly, ever so lovingly.

  • 14
    katalogairmanagement
    mayo 12th, 2011 01:50

    espy what business we did and classify one for yourself

  • 15
    larry
    mayo 12th, 2011 15:08

    Get PhD Degree in Alternative Medicine easily from Mediagnosis Alternative Medicine University in Israel. Online courses in Hebrew and English. Finsih your PhD Alternative Medicine Degree Today! http://mediagnosis.co.il
    http://mediagnosis.org

  • 16
    Albert
    mayo 12th, 2011 20:31

    pipfixed is a good forex broker, lowest fixed spreads and execution better then most forex brokers.

  • 17
    kobebeats
    mayo 12th, 2011 21:45

    Hola! I’ve been reading your news for some time now and finally got the bravery to go ahead and give you a shout out from Huffman Texas! Just wanted to tell you keep up the fantastic job!Nice posting! I will cling on to listening to the news.monster butterfly I like that there’s a keep a copy system of an elastic wire and magnets holding the pin mechanism in place.

  • 18
    Check out my FB profile
    mayo 12th, 2011 22:58

    Hey {this is a|this can be a|it is a} {real|actual} cool {website|web site}…

    Hey I found this website to be really fascinating! Bookmarked!…

  • 19
    katalogstron
    mayo 13th, 2011 01:03

    Decidedly good and understandably maintained web directory. If the positions your net site can once in a blue moon submit your area to our directory for free.

  • 20
    preclus
    mayo 13th, 2011 04:20

    Hello. This is fine article, dude. Muchobliged. However, Im experiencing odd situation with your Really Simple Syndication. I havent got aclue I’m unable to read it. Is there anybody having equivalent rssdrawback? Thx

  • 21
    edukacja
    mayo 13th, 2011 04:33

    Dude, you should be a writer. Your article is so interesting. You should do it for a living

  • 22
    Chantay Besherse
    mayo 13th, 2011 08:37

    I don’t want to step on any feet here but I think that I found something that you might be very interested in. If you are one of those people who believes that you can have your cake and eat it too then you’re going to love this. This thing is fairly new but you might have already heard about it because the company is growing exponentially. It’s a win-win situation because nobody is going to turn down legitimate free stuff. Companies give stuff away all the time and this site just has all these offers in one place and makes it easy for you to take advantage of each offer. Free travel, merchandise coupons, restaurant offers, etc. What keeps the site going is the memberships but you don’t have to become a member. You can go the free route on that one as well. The offers are constantly updated as soon as they become available. In most cases, you just need to fill in your name and address so that they know where to send the free stuff. Also, and this might be the best part, if you actually pay the $25 to be a member, you can market this stuff to the world and make money giving away free stuff! You do need to become a member if you want to be a part of the business plan but it is very cheap and comes with some terrific tools (like a video mailer that you can even use for your other offers). Plus, you get access to ALL the free stuff. If you do decide to make money with this, they offer some really cool promotional tools including access to a video mailer that you can use to blast to prospects. I wouldn’t even be mentioning this here if it wasn’t for the fact that I am so excited about it. This is a pretty cool deal and really worth checking out. http://adf.ly/1Vrs4

  • 23
    Cindie Rinebold
    mayo 13th, 2011 16:46

    Say, you got a nice article.Really looking forward to read more. Keep writing.

  • 24
    catalog
    mayo 13th, 2011 23:12

    Online web directory. Add your site to our directory pro free. Do not remove the entries.

  • 25
    tv through internet
    mayo 14th, 2011 01:02

    Kudos for posting such a useful weblog. Your weblog is not only informative and also artistic too. There usually are very few people who can write not so simple articles in a creative way. Keep up the good work !!

  • 26
    PropeciaDRrx
    mayo 14th, 2011 01:28

    Despite the efforts of clinicians to provide early penile rehabilitation, many patients will have persistent veno-occlusive disease following RP. Propecia Online “We often get cases where the patient has tried the drug at home and it has not triggered complete abortion.
    Buy Cialis Online

  • 27
    Miranda Schmiege
    mayo 14th, 2011 04:47

    Nobody ever said that it was going to be easy. Too bad there is not one of those easy buttons like they show on the Staples commercials. Everyone likes free stuff but at this point, you might be a little leary of any offer that is attached to the “free” word. Companies give stuff away all the time and this site just has all these offers in one place and makes it easy for you to take advantage of each offer. We’re talking about stuff like free hotel stays, merchandise samples, dinners, spas, products of all kinds, coupons for free groceries, free travel and just about anything else that you can imagine. You can take advantage of all this free stuff wether you are a paying member or not. As a free member, you can still get the 5 latest free offers each week, at zero cost to you. Hey, since everything is free, what do you have to lose? Also, and this might be the best part, if you actually pay the $25 to be a member, you can market this stuff to the world and make money giving away free stuff! As a paying member, you also get instant access to thousands of free offers, you’re automatically entered into the payout matrix and much more. If you do decide to make money with this, they offer some really cool promotional tools including access to a video mailer that you can use to blast to prospects. It will only take you a couple of minutes to see what I am so excited about. http://adf.ly/1Vrs4

  • 28
    Jtosme Movie
    mayo 15th, 2011 08:16

    Tks…

    I’ve visited many blogs,forums, but this time:How your fantastic forum is . It makes me surprise….

  • 29
    Briefcase
    mayo 15th, 2011 11:51

    There is evidently a bunch to know about this. I consider you made various good points in features also.BTW,I found a great place to learn how to choose a Lose weight,hope you can like it.

  • 30
    quick money making ideas
    mayo 15th, 2011 17:47

    I adore your blog site.. excellent colors & motif. Would you actually layout this excellent website on your own and also performed people rely on someone else to get it done for you? Plz react while I!|m planning to design and style my own blog site in addition to wish to find out where by you became this by. many thanks

  • 31
    diddybeats
    mayo 15th, 2011 18:44

    Amazing goods from you, man. Ive study your stuff ahead of and youre just too remarkable. monster power beats I appreciate what youve got proper here, adore what youre stating as well as the way you say it. You make it entertaining and you even now manage to help keep it wise. I cant wait to go via further from you. That is really an extraordinary weblog.

  • 32
    buy samsung lcd hdtv
    mayo 15th, 2011 21:30

    http://jia-tv.com Thanks for that awesome posting. It saved MUCH time :-)

  • 33
    financial investments
    mayo 15th, 2011 21:33

    Financial & Investment Management Advisors…

    Nice Website. You should think more about RSS Feeds as a traffic source. They bring me a nice bit of traffic….

  • 34
    wpisowbaza
    mayo 16th, 2011 00:41

    Online spider’s web directory. Combine your purlieus to our directory object of free. Do not get rid of the entries.

  • 35
    insurance
    mayo 16th, 2011 09:53

    There is evidently a bundle to identify about this. I consider you made some nice points in features also.BTW,I found a great place to learn how to choose a Men’s Health,hope you can like it.

  • 36
    Elisha Cuthbert
    enero 12th, 2012 20:18

    Nice to be visiting your weblog once again, it has been months for me. Nicely this article that i’ve been waited for so long. I need to have this post to total my assignment within the college, and it has exact same topic with your article. Thanks, fantastic share.