Different Types of Water Treatment Systems | Drinking Water

Are you confused and overwhelmed by the choice of water treatment equipment? Then you have come to the right page! There are many different types of water treatment systems on the market today. It can be somewhat difficult to choose the right product for your needs, like types of home water treatment systems, types of well water treatment systems, or types of home water treatment systems.

In this post, we will discuss the different types of water filtration methods and the best uses for these water treatment plants. We’ll also provide tips on how to choose the right system for your home or business. So let’s move on.

➢How do Water Treatment Systems Work?

The water treatment process is a process of treating polluted industrial wastewater or raw water with poor quality through a series of technologies, such as physical and chemical means, so as to remove some harmful or unnecessary substances in the water.
Water treatment equipment is a tool for obtaining high-quality water based on the analysis of water quality and the water quality requirements of produced water. Common water treatment methods:

① Remove some or all impurities in raw water;
② Remove unnecessary substances by adding new components to perform physical or chemical reactions.

➢How Many Types of Water Treatment Plants Are There?

Water treatment systems are typically categorized by the type of treatment process used. There are multiple types of water treatment systems currently approved and in use. Common types include coagulation, flocculation, sedimentation, filtration, disinfection, chlorination, and supplementary treatment. etc.

Here are some of the most prominent water treatment systems today:

1. Reverse Osmosis Systems:

Reverse osmosis (RO) systems work by using semi-permeable membranes with nano-sized pores to eliminate a variety of contaminants from raw water, including bacteria, dissolved solids, heavy metals, and other suspended solids. As RO technology advances and evolves, it is commonly used in a variety of commercial and industrial applications. Safe, clean water can be obtained at a low-cost investment.

Reverse osmosis technology is commonly used in seawater desalination, power plant boiler feed water, ultra-pure water treatment in the semiconductor industry, food processing plants, the pharmaceutical industry, restaurants, and hotels, whole house water filtration, community drinking water, etc.

figure2. Whole House RO Systems

Advantages of Reverse Osmosis Systems:
  • The desalination rate is as high as 98%.
  • High-quality produced water.
  • Once installed, they require very little maintenance.
  • Works better with other filtration systems.
  • Efficient and stable, it can produce a large amount of purified water in a short time.

Reverse Osmosis Systems work flow

2. Ultrafiltration UF Systems:

Ultrafiltration (UF) systems are membrane-based physical processes. It uses a partially porous membrane to achieve the purpose of removing unwanted substances in raw water. Compared with reverse osmosis systems, the filtration accuracy is lower, and the filtration effect is better than in nanofiltration systems. These systems are usually used as pretreatment systems or in areas where the requirements for product water are not very high.

Ultrafiltration (UF) systems work flow

UF systems require more maintenance than other types of filtration systems because of the frequent cleaning and replacement of the membranes. Choosing a good quality UF membrane will reduce the corresponding maintenance cost.

Advantages of Ultrafiltration Systems:
  • Efficient, high removal rate.
  • Low energy consumption and short production cycle.
  • The operation is simple and the cost is lower.
  • No need to add any chemical reagents.

Advantages of Ultrafiltration Systems


3. Ultraviolet (UV) Disinfection Systems:

The ultraviolet disinfection system uses ultraviolet rays to cause DNA strand breaks in bacteria to achieve the purpose of killing bacteria and eliminating microorganisms in water. These systems are often used in conjunction with a reverse osmosis system to further purify the water, making it safe to drink and reducing the risk of contamination by harmful substances.

Figure 8 UV Water Sterilizer

UV disinfection systems are commonly used in industrial, commercial, and residential applications, such as sewage treatment plants, food processing plants, beverage plants, breweries, cosmetic plants, etc.

The use of ultraviolet (UV) disinfection systems is critical to the ecosystem and the treatment of rivers, lakes, oceans, and other polluted water sources.

Advantages of UV Disinfection Systems:
  • Microbial killing efficiency can be as high as 99.99%.
  • Effectively eliminate all kinds of bacteria and viruses.
  • They require minimal maintenance.
  • Wide range of applications.

Advantages of UV Disinfection Systems


4. Ion Exchange Water Treatment Systems:

The ion exchange system utilizes the principle of ion exchange. Use resin beads with anions/cations to remove various heavy metal ions or unwanted ions (such as calcium and magnesium ions that cause hardness in water) and other dissolved solids by replacing them with ions present in the water.

Ion Exchange Water Treatment Systems work flow

Common water treatment methods using ion exchange technology include deionization systems, electrodeionization systems, water softening systems, and demineralization systems. The electrodeionization system combines electrodialysis and ion exchange organically and removes TDS in water by using electricity, ion exchange technology, and resin.

Part of the system can play a pretreatment role before being used in the reverse osmosis system to reduce the loss of the reverse osmosis membrane. After being used in the reverse osmosis system, the water can be further purified to obtain pure water/ultrapure water.

However, due to the need for regular resin regeneration, these systems require careful monitoring and frequent maintenance.

Advantages of Ion Exchange Systems:
  • Ion exchange systems can produce very high-quality water that is very effective at removing a wide variety of contaminants.
  • Resin has the ability to regenerate
  • EDI system requires no regeneration and minimal ion exchange resin usage
  • The equipment is compact in structure and occupies a small area
  • Fields where mixed bed separation is applicable
  • High degree of automation and easy maintenance
  • Applicable to a wide range of industries

Advantages of Ion Exchange Systems

5. Distillation Systems:

Distillation systems work by using heat to vaporize water, leaving behind impurities and other dissolved solids. The resulting vapor is then condensed into liquid form, resulting in perfectly pure water (H2O) free of contaminants. However, the distillation process consumes a lot of energy, and the input cost is high. The produced water is not easy to store and is easily polluted.

Therefore, only the distillation system is only suitable for preparing a small amount of pure water.

Advantages of Distillation Systems:
  • The purity of the produced water is high.
  • No supplementary substances need to be added.
  • No additives are required.

6. Activated Carbon Filtration Systems:

Activated carbon filtration systems are filter systems that contain Granular Activated Carbon (GAC). Activated carbon is highly absorbent, making it ideal for removing some chemicals from water. This system is often used to remove chemicals that give water an unpleasant odor or taste, such as hydrogen sulfide (rotten egg smell), chlorine, and volatile organic compounds (VOCs).

Activated Carbon Filtration Systems

In the water treatment system, sand water filters and water softening filters are usually used as a pretreatment before membrane system treatment, and multimedia water filters can also be used instead to reduce suspended substances, colloids, large particles, bacteria, microorganisms, and colors in the water supply. and smell etc.

Advantages of Activated Carbon Filters.
  • Low-cost input requirements。
  • Can effectively remove various pollutants.
  • Strong adsorption, with good filtering effect.
  • Improves the taste and odor of drinking water.
  • High efficiency and low maintenance cost.
  • Easy to clean and replace.

7. Sediment Filtration Systems.

Sediment filtration systems capture and remove suspended solids such as sand, silt, or clay from feed water, reducing water turbidity. These filters range from simple mesh screens to complex multi-media filters that use layers of different materials to capture particles of different sizes.

Often the system is used in conjunction with other processes such as activated carbon filtration, aeration, chlorination, and ozone.

Advantages of Sediment Filtration Systems:
  • Reduce bacterial contamination.
  • Effectively reduce water turbidity.
  • Low maintenance.
  • They produce high-quality water at a reasonable cost.
  • Reduces the risk of fine sediment particles clogging pipes.

➢How Much Do Water Treatment Systems Cost?

The price of the water treatment system is influenced by many factors, such as the treatment process, the water quality requirements of the product water, the water quality of the influent water, the daily production capacity of the equipment, the system assembly form, and so on. Therefore, the running cost will also be different.

The costs that need to be considered in common wastewater treatment systems include energy costs (about 40-50% of the total cost), material costs, labor costs, maintenance costs, raw material costs, spare parts costs, and equipment depreciation costs.

Small-scale water treatment systems are more economical to operate than large-scale water treatment equipment. For example, the home water filtration system needs to be considered relatively less, generally, the purchase cost of the equipment, because the installation and maintenance will be borne by the water treatment company. Costs range from approximately $1,500 to $5,000.

Figure 8 cost effective way to get deionized water

➢How to Choose the Right Water Treatment Plant?

Water treatment systems are an important part of ensuring a safe, clean water supply for people and businesses. Different types of systems offer different advantages and disadvantages, so it is important to understand the features and benefits of each type before making a decision.

It is recommended that you consider the following points before choosing a water treatment system:

1. Quality of Your Raw Water.

The quality of your raw water plays a major role in determining the kind of water treatment system you will need. If your water is hard, with high levels of lime or calcium, then you may need a specialized system to soften it. On the other hand, if you have low pH levels or high concentrations of metals like iron or manganese, you will need a system that includes an oxidation process.

Quality of Your Raw Water

2. Quality of Treated Water Produced.

Different water treatment systems produce different levels of treated water. Depending on your needs, you may need a system that produces ultra-pure water with very low levels of contaminants or one that just removes specific compounds like heavy metals and pathogens. Make sure the system you choose is designed to meet your specific needs.

3. Cost and Maintenance.

Before you purchase a water treatment system, consider how much it will cost to install as well as the ongoing maintenance costs associated with it. Some systems require more frequent filter changes or chemical refills than others, so make sure you factor this into your decision.

4. Type of Water Treatment Technology Used.

Different systems use different purification methods, so make sure you choose one that meets your needs. Some systems rely on physical filtration, while others may use chemical or biological processes to remove contaminants from the water.

5. Production Capacity.

For commercial or industrial applications, you need to make sure the water treatment system can handle your production capacity. Make sure it is designed for the volume of water that needs to be treated and will be able to withstand long-term use without needing frequent repairs or replacements.


When it comes to water treatment systems, there are a few types of water treatment plants to choose from. Each system has its own advantages, and it can be tough to decide which one is right for you. That’s where NEWater comes in – we supply the perfect water treatment solutions for varying industrial projects, businesses, and even homes.

We produce almost all kinds of water treatment systems, and customize one-to-one according to customer needs to solve all water treatment problems! Contact us today to get started!

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