Water-Energy Tradeoff With Desalination

“Israel now gets 55 percent of its domestic water from desalination, and that has helped to turn one of the world’s driest countries into the unlikeliest of water giants.” (Jacobsen) Desalination is not a new idea it has been around for along time as far back as Aristotle in the 4th century and re emerging again the 1800s. Desalination is probably not going to be the magic solution to California 's drought problem at least not completely after all even the world’s biggest desal plants are only supplemental. The plants tend to not make enough water to support an entire population. Israel 's desal plant provide enough water for 2.8 million people, but California 's population is five times as bigger than israel 's and our agricultural industry is about thirty two times bigger. It can also be twice as expensive as treating other water sources due to having to heat the water. And there is also the problem of what to do with the leftover water or brine. Apparently you can’t just dump it back into the ocean as it could cause death to the nearby sea creatures due to it being too salty.

Today, desalination is a common process that's used in seaside cities and towns worldwide. There are more than 15,000 desalination plants around the world providing freshwater from salt and brackish water alike (Planet Green 2011). This number continues to grow as researchers work to improve the process, both in terms of cost effectiveness and energy efficiency (DSE 2011). But countries such as Australia, Israel and even the United States are continually adding desalination plants of various sorts into their water-management portfolios. The facilities are common in North Africa and the Mideast, where freshwater is scarce (Chandler 2008).

The issue of building desalination plants has been a hot topic of Californians in the past couple decades because researchers knew that our available surface and groundwater supplies are becoming scarce. This problem is important because California is home to a large population of people as well as extensive agricultural and industrial productions that need vast amounts of water. With the reduction in available ground and fresh water brings other problems that need to be addressed. Many farmers are having to impose stricter management policies in regards to how they use the water the pay so much for. Crops sensitive to the amount of water they receive or do not receive can be destroyed in a short amount of time if neglected of water. With the amount of fresh water accumulated by both snow melt of California’s mountains as well as ground water retrieved from wells and pumps being depleted faster than we can recharge those sources, farmers face further impacts. An article by Robert Glennon, “Unquenchable: Americas water crisis and what to do about it” says “In the summer of 2009, California is facing mandatory water rationing. Many farmers may be entirely cut off, costing the economy more than $1 billion and putting more

-Article 1- Ghaffour, N., M. Missimer, T., & L. Amy, G. (2013). Desalination (Technical review and evaluation of the economics of water desalination: Current and future challenges for better water supply sustainability) (Vol. 309, pp. 197-207). Thuwal.

Desalination technology converts the tons of seawater that cover’s California’s coast into drinkable water. This process, though expensive and difficult, would provide California with an endless supply of water. The ocean is a huge part of the California lifestyle, and it could become a huge source of their water supply too. The Groundwater Replenishment System recycles water to be used again. It takes in about seventy million gallons of waste water a day and puts it through a cleaning and purifying process, that then makes this water safe enough to drink. Many people may not be comfortable with drinking recycled water, but this water could be put to use in landscaping and farming, adding seventy million extra gallons a day. The desalination process may be a bit far fetched for now, but using a water recycling program is completely feasible and would be a huge help in reducing California’s use of water. (only its not reducing, its just providing them with more water to use yknow? how should I phrase that?)

However, due to the long lasting drought in California we should heavily consider this method of producing clean water. In other parts of the world such as China, India, Australia, Spain and more they have been able to produce nearly fourteen billion gallons of drinking water through this process. The largest desalination plant in the world is located in Saudi Arabia and produces two hundred and seventy three million gallons of drinking water per day. If the United States is able to perfect this, it could fix the situation. Amanda Little does an excellent job of sharing a wide array of perspectives of desalination in her article “Can Desalination Counter The Drought”. For instance she describes the discusses the standpoint of the executive director of the California Coast keeper Alliance, Sara Aminzadeh, as she argues, “It’s just not a good option from a cost and energy standpoint.” She goes on to say, “Desalination may seem like a panacea, but it’s the worst deal out there.” Although this method may not be cost or energy efficient, this may be the only plausible method of producing clean water. As seen in Saudi Arabia this is an efficient form of creating clean water and due to the lack of resources, this may be California’s last

While desalination, is indeed an effective long-term solution, it isn 't necessarily the most cost competitive method, because it can cost four to eight times more expensive than alternative solutions.

In the peaceful island country of Tuvalu, there is no genocide, no civil unrest, but no fresh water source. Rainwater harvesting is the primary source of fresh water. Rainwater collected from roofs, to gutters, and stored in tanks; unfortunately, these tanks are poorly maintained, or damaged by tropical cyclones, resulting in a lack of water (Kingston, 2012). Three out of the nine islands that make up the country of Tuvalu have a natural water source; however, the three islands with a natural water source, have issues with their septic system, and it contaminates their aquifer, and its thin fresh water lens. The purpose of this paper is to provide the country of Tuvalu a plan to establish a permanent desalinization plant for the country to have a consistent source of safe, clean drinking water.

Desalinated water is critical to Perth’s water supply as Western Australia continues to experience a drying, arid climate. It is important that a reliance on traditional water sources such as dams are reviewed and new and sustainable sources that are climate independent are implemented. Factors of a drying climate, extreme weather conditions, population increase (Population in Perth to double in the next 50 years) and the way we currently source out water need to be evaluated in order to ensure a climate resilient supply that is independent of varied amounts of rainfall. Desalinated water is critical to Perth’s water supply due to the states large infrastructure and mining industry.

A desalination plant is a possible alternative to California’s need of consumable water. There is a course cons against desalination mainly affecting the marine environment for leaving highly concentrated saline water behind through the process but we should not fear it as it is a long term solution we cannot toss aside. Kerry Cavanaugh from Los Angeles Times mentions, “2,000 an acre foot, compared to about $1,000 an acre foot for imported water” (par. 3). This means that production of water through this process is cost efficient and seems rather illogical to spend more money into producing water; instead of importing it from another major source. The process cost is not a major step forward, but the idea of reaching out to import water is rather absurd. California is an arid state; we are the ones responsible for turning it into a paradise. In order to maintain it that way a method to lower the cost of desalination can be propose as solution. The thought

1. There are two main sources of fresh drinking water, ground water and surface water. Ground water originates from precipitations that usually fall in the form of snow or rain. While, the surface water is also originates from precipitate that reaches the land surface and is then recharged into rivers, wetlands and lakes. Although these systems are usually reliable, in desperate time of need, a more reliable source of water is needed. The desalination plant is extremely valuable and flexible because it does not depend on rainfall. Instead, the desalination plant is the only source that relies on seawater. Using seawater in the desalination plant helps meet the community’s water needs and secures the water needs in the future. While other sources of water, such as rainwater or water from dames are not reliable enough to strictly rely

According to David Sedlak, we have made large progress in seawater desalination for the past 2 decades. The largest seawater desalination plant in the Western Hemisphere that is built north of San Diego uses half of the energy use than Santa Barbara 25 years ago. One reason why Sea Water is a good way to save more groundwater because we do not have a lot of water, but lots of oil. Also seawater desalination is not always good, there is a negative side. It is energy intensive; that means that it will cause a lot more climate change, but that is the only negative thing David Sadlak had mentioned about seawater desalination; but so far the new seawater desalination plant uses half the energy it used to. This would help California because it would lower the amount of water that is pumped from the ground, therefore, seawater desalination is a possible solution for conserving more

Desalination is basically the procedure of separating excess sodium chloride, minerals and impurities from sea and ocean water to make it usable for irrigation and human consumption. It has been touted to rid the world of its current water problems for nearly 5 decades now, during this period huge strides have been made in the desalination technology. These advances have made it possible to venture into desalination as the long term option to the water problem in many parts of the world. It is seen as long term since the ocean is not going anywhere anytime soon as compared to lakes and rivers that have been going dry seasonally. The state of California is not new to the water shortage problem; as stated above tit has been a witness to previous droughts. It is therefore time to consider a long term solution to this problem.

If residents and corporations throughout the United States continue to frivolously waste water and refuse to make painless changes and upgrades around their homes, it will continue to increase in cost to people across the United States. For example, as a result of the water shortage crisis currently afflicting the southwestern United States, the city of San Diego, California, is currently constructing a desalination plant, located in Carlsbad, California. The idea of a desalination plant is to collect undrinkable saltwater from the ocean and, using reverse osmosis and other filtering techniques, remove the salt to produce clean, potable water (Barnett). However, there are many downsides to relying on desalination practices to provide for a city the size of San Diego. First and foremost, it is considerably more expensive to produce clean drinking water from saltwater as opposed to using regular surface water or groundwater. The act of filtering the water alone can be twice as expensive as traditional filtration methods. In addition, desalination plants consume much more energy than traditional treatment plants, mostly due to the fact that the filtration methods are much more involved. Desalination consumes twice as much power as recycled plants, and four times as much as pumping groundwater (Newell, Roohk and Reardon). For example, the Carlsbad plant alone will require the same amount of electricity as is used to power 125,000 homes in California. However, the biggest

With the water crisis being seen around the world, even right here in the United States, we need to explore other options to supply fresh water to the residents. One State, in particular, that raises concern is the state of California. An alternative method to supply water to residents could be the process of desalination. Desalination is when fresh water is made by using either seawater or brackish and eliminating the minerals and salts as a way to make the water safe for human and agriculture uses ( Kesieme et al., 2013). In recent years, we have seen an increase the in the number of desalination plants around the United States (fig 1). However, is the process of desalination the answer for the water crisis going on in California? As a