Price Guide: How Much Does a Desalination Plant Cost?

⏳Estimated reading time: 15 minutes ⏳

Desalination plants have become a crucial solution for obtaining potable water, especially in locations where water resources are scarce or access to fresh water is limited.

Whether on boats, industrial facilities, or remote areas, desalination plants make it possible to convert saltwater from the sea or saline wells into water suitable for human consumption or industrial use. 

If you are interested in buying a desalination plant for your boat or industry, it is important to understand not only the prices of these machines, but also how to reduce long-term operating costs.

In this article, we will explore in detail how much a desalination plant costs, the factors that influence its price, the main brands and models available on the market, and some strategies to optimize operating expenses.

We will also analyze the technology behind these machines, their applications, and the importance of having good technical support.

What is a desalination plant and how does it work?

A desalination plant, also known as a desalinator, is equipment designed to remove salt from seawater or saline sources, converting it into fresh water suitable for human consumption or various industrial uses.

The most common desalination process is reverse osmosis, in which pressure is applied to water to pass it through a semi-permeable membrane that retains salts and other contaminants.

Desalination plants can be of different sizes and capacities, depending on their intended use.

Applications range from recreational boats that need potable water during their voyages, to large industrial facilities that require large volumes of desalinated water for their production processes.

How much does a desalination plant cost?

The cost of a desalination plant can vary considerably depending on several factors, such as water production capacity, the type of technology used, the size, the brand, and the technical specifications of the unit. In this section, we will delve into how these factors affect the price of a desalination plant and break down the different types of desalination plants available on the market, so that you can better understand the options and make informed decisions.

Desalination plants for boats

Desalination plants for boats, also known as seawater purifiers, are designed to be compact, efficient, and easy to install on vessels. They are essential equipment for guaranteeing the supply of potable water on long voyages, especially when access to fresh water is limited. Depending on the size of the vessel and the amount of water needed, the prices of desalination plants for boats can vary widely.

Price Range:

• Small desalination plants (for recreational boats): Small desalination plants, which usually have a production capacity of between 30 and 150 liters per hour, are ideal for recreational boats and fishing boats. These units are lightweight and easy to install, making them suitable for medium or small boats.
  • Approximate price: From 5,000 euros + VAT for both energy recovery pump and piston pump models.
  • Example: The SolarMaax Desalinizadora Agua de Mar model 200, which produces 32 liters per hour, operates at 12 or 24 V DC. This energy recovery model is especially suitable for sailboats where energy consumption is a priority and is available through SolarMaax Desalinizadora Agua de Mar 32 L/h. 

• Medium desalination plants (for commercial boats or large yachts): For larger vessels, such as yachts or commercial boats, units with greater production capacity are needed, which can generate between 150 and 360 liters per hour.
  • Approximate price: Around 7,500 euros + VAT, with models over 25,000 + VAT, depending on whether they include electronics and the brand.
  • Example: A model such as the DessaLine Desalinizadora Agua de Mar Sammy with 280 liters per hour, which has an excellent quality-price ratio, offers adequate performance for medium vessels and is available through Dessaline Desalinizadora 150 L/h. DessaLine's Sammy models are especially suitable for vessels equipped with a generator and are widely used by customers who want a system without electronics, with simplicity of use and great robustness.

• Large desalination plants (for commercial vessels and large maritime facilities): In the case of large commercial vessels or offshore platforms, desalination plants can produce several thousand liters of potable water per hour. These systems are very advanced and are designed to operate continuously and efficiently in demanding environments.
  • Approximate price: From 35,000 euros + VAT, depending on capacity and components.

Factors Affecting the Cost of a Desalination Plant

It is important to note that the price of a desalination plant is not only determined by its water production capacity, but also by other technical and operational factors. Below, we explore some of the main factors that influence the cost of a desalination plant:

• Production Capacity: As mentioned, the size and production capacity of the desalination plant are key factors in determining its price. Larger capacity desalination plants generally have a higher price due to the greater amount of technology and materials used.
• Filtration Technology: Reverse osmosis is the most common technology in desalination plants, but some units use additional pretreatment technologies, such as activated carbon filtration or UV treatments, to improve water quality and extend the system's lifespan.
• Energy Efficiency: Desalination plants that use less energy are more expensive, but offer significant savings in long-term operating costs. More efficient units are an excellent option if you are looking to reduce energy consumption and minimize operating expenses.
• Materials: Desalination plants designed with more durable materials, such as stainless steel, are more expensive but have a longer lifespan and are more resistant to corrosion, especially in marine environments.
• Technical Support and Warranty: Technical support and warranty should also be considered when evaluating the cost of a desalination plant. 

How to Reduce the Operating Costs of a Desalination Plant

While the initial cost of a desalination plant is an important factor to consider, it is also essential to take into account long-term operating costs. Here are some tips to reduce these expenses:

Regular Maintenance

Proper maintenance is key to avoiding costly repairs and ensuring that the desalination plant operates efficiently for longer. Make sure to have a regular preventive maintenance plan and to use high-quality original spare parts.

Optimization of Energy Use

Desalination plants consume energy, so it is important to use units that are energy-efficient. Some high-end desalination plants are equipped with energy-saving systems, which can significantly reduce operating costs.

Water Filtration and Pretreatment

Adequate pretreatment of water before it enters the desalination system can extend the life of the desalination plant and improve its efficiency. Ensure that the water to be treated is as free as possible of impurities, which will reduce the workload of the desalination plant.

Types of Desalination Plants According to Water Source

Not all desalination plants are alike, and one of the key differences is the water source they use. Depending on whether the water comes from the sea, a saline well, or another source, the technology and design of the system may vary. Below, we analyze the different types of desalination plants according to the water source and how this influences the cost.

Seawater Desalination Plants

Seawater desalination plants are the most common, especially in marine applications and in coastal areas where ocean water is readily accessible. These units are designed to treat salty seawater, removing salt and some contaminants to produce potable water.

• Advantages:
• Wide availability of water: The sea is a virtually inexhaustible water source, making seawater desalination plants a very reliable option in coastal regions.
• Proven technology: Reverse osmosis is the main technology used for this type of desalination, and it is well-established and optimized.
• Prices: Seawater desalination plants are usually more expensive due to the complexity of treating saltwater, which requires special high-pressure membranes and pumps to handle the high salt concentration. The price of these units can range between 5,000 and 25,000 euros + VAT, depending on capacity and brand.

Brackish Water or Well Water Desalination Plants

Desalination plants that treat brackish water or well water are used when the water source is not from the sea, but from underground wells with high salinity levels. This type of desalination plant is common in arid regions or in industrial applications where water is extracted from saline underground sources.

• Advantages:
• Suitable for unconventional water sources: Ideal for industries that need to treat saline or brackish water from wells or underground springs.
• Lower salinity: Although the water is not as saline as seawater, brackish water desalination plants are usually simpler and more economical than marine ones.
• Prices: Brackish water or well water desalination plants are generally more affordable, with prices starting from 5,000 euros + VAT, depending on capacity and specific installation requirements.

 

The Importance of Technical Support and Maintenance for Desalination Plants

Proper maintenance of a desalination plant is essential to maximize its lifespan and ensure it operates as efficiently as possible. Investing in a high-quality desalination plant is not enough if preventive maintenance and adequate technical support are not taken into account. Below, we explain why technical support is key to the performance of your desalination plant and how to reduce potential long-term expenses.

Preventive Maintenance

As with any industrial or high-performance equipment, desalination plants require regular maintenance to avoid costly failures and ensure their operational efficiency. Preventive maintenance includes periodic inspection of osmosis membranes, filter replacement, and verification of pumping and control systems.

• Benefits of preventive maintenance:
• Greater equipment durability: With proper maintenance, your desalination plant will operate for many years without major repairs.
• Improved performance: Regular maintenance ensures that the desalination plant operates at its maximum capacity, which optimizes water production and reduces operating costs.
• Prevention of unexpected shutdowns: Preventive maintenance helps identify and solve problems before they cause serious failures, minimizing downtime.

Specialized Technical Support

Technical support is another crucial aspect when operating a desalination plant. Having access to authorized technicians specialized in the brand of desalination plant you own is essential to ensure that any problem or malfunction is resolved quickly. Desalination plants from recognized brands, such as Parker HRO Sea Recovery and Blue Water Desalination, offer authorized technical support that guarantees the availability of original spare parts and technical assistance worldwide.

• Advantages of having authorized technical support:
• Backup of original spare parts: Original parts ensure that the desalination plant continues to operate with the same efficiency as when it was installed.
• Professional technical advice: Technicians specializing in desalination plants know the best maintenance practices and can help optimize the unit's operation.
• Rapid Fault Diagnosis: Authorized technical support can quickly detect problems and offer effective solutions to avoid long downtimes.

Maintenance and Cost Reduction

Maintenance is not only about extending the useful life of your equipment but also about optimizing operating expenses. Some strategies to reduce maintenance costs include using high-quality spare parts, updating control systems to improve energy efficiency, and training in the proper use of the desalinator.

In addition, having a structured maintenance plan can help you avoid unexpected repairs, which are generally more costly. By establishing a long-term maintenance program with your dealer or technical service provider, you can rest assured that your desalinator will operate continuously and efficiently.

What do we offer at Dessal.es?

At Dessal.es, we are exclusively dedicated to offering products and services that help convert saltwater or brackish water into quality drinking water. We are proud to provide personalized solutions that adapt to the needs of each client, whether for domestic use on boats, industrial needs, or land applications. Among our main products, you will find:

• Desalinators for boats: Equipment designed to convert seawater into drinking water, ideal for sailboats, yachts, fishing boats, and other vessels. Our units are manufactured with the latest technology, offering efficient and durable performance.
• Industrial desalinators: Higher capacity solutions to meet the needs of industries, hotels, campsites, and any facility that requires large volumes of drinking water. With our industrial desalinators, you can ensure the water supply in any environment.
• Systems for saline or brackish water wells: If you need to treat groundwater with a high concentration of salts, we offer equipment specifically designed for this task. Ideal for human consumption, agricultural irrigation, or industrial processes.
• Accessories and spare parts: At Dessal.es, we also offer a complete range of filters, membranes, and other essential spare parts to keep your water purification systems in perfect condition.
• Other equipment: In addition to desalinators, we have products such as Wallas diesel stoves and heaters and Victron batteries, among others.

Our Commitment

At Dessal.es, our goal is to offer products and services that guarantee the total satisfaction of our customers. We are proud to provide personalized technical advice, ensuring that you choose the right solution for your needs. In addition, we have installation and commissioning services, guaranteeing that each system operates optimally from day one.