What are the steps involved in the water purification process of a water purifier?

In today's pursuit of a healthy life, water purifiers have become an important device for many families to ensure drinking water safety. What kind of "transformation" does water undergo to become so pure after passing through a water purifier?

Core Technology Analysis

The core value of a high-efficiency water purifier lies in its precisely designed filtration system. We will take a water purifier using CP+RO+CB filtration technology as an example to analyze its purification steps in detail. This system consists of three main lines of defense:

Step 1: Composite Pre-filter (CP) – Primary Precision Filtration

The composite pre-filter (CP) typically integrates a polypropylene melt-blown (PP cotton) filter and/or activated carbon granules. In this stage, the raw water undergoes the following treatment:

• Physical Interception: The PP cotton is responsible for intercepting large particulate impurities in the water, such as sediment, rust, insect eggs, and red worms.
  
  
• Preliminary Adsorption: The activated carbon in the composite pre-filter will initially adsorb discoloration, odor, residual chlorine, and some organic matter in the water, protecting the subsequent more precise filter.
  
  

Step Two: Reverse Osmosis (RO) Filter – Core Deep Purification

Reverse osmosis (RO) is widely recognized as the most crucial and essential purification technology in modern water purifier systems. The RO membrane has extremely small pores, only about 0.0001 microns. Water molecules are forced through the RO membrane under pressure, while the vast majority of impurities, pollutants, heavy metals, bacteria, and viruses are retained.

• Highly Effective Removal: It effectively removes almost all dissolved solids from water, including heavy metal ions (such as lead, mercury, and cadmium), bacteria, viruses, scale, and pesticide residues.
  
  
• Born with "Pure Water": Water filtered through the RO membrane becomes high-standard pure water, crucial for ensuring drinking water quality.
  
  

Step Three: Post-Carbon Filter (CB) – Improved Taste, Secondary Antibacterial Effect

The post-carbon filter (CB) is the final "beautifier" before the purified water enters the drinking water stage.

• Deep Adsorption and Improved Taste: The activated carbon filter's main function at this stage is to further adsorb any residual odors in the water, improving its taste and making drinking water sweeter and more palatable.
  
  
• Ensuring Freshness: Maintaining the freshness of the purified water.
  
  

Balance of Purification and Efficiency: The Secret to High Water Efficiency

When focusing on the purification effect of a water purifier, water efficiency is also an important indicator.

This water purifier has a purification/discharge ratio of 2:1, meaning that for every 2 parts of purified water produced, only 1 part of wastewater is discharged. This is an excellent water efficiency ratio, indicating that the water purifier can efficiently produce pure water while maximizing water conservation and reducing household water costs.

How to Choose and Maintain Your Water Purifier?

Choosing the right water purifier hinges on focusing on its filtration system configuration, water efficiency performance, and filter replacement cycle:

• Regular Filter Replacement: Different filter cartridges have different lifespans; regular replacement is the only way to ensure the water purifier always operates efficiently and that the water quality meets standards.
  
  
• Focus on the RO Membrane: The RO membrane is the most expensive and crucial filter element, and its quality directly determines the purification capacity of the water purifier.
  
  

Through the multi-stage filtration of the CP+RO+CB system, your drinking water is thoroughly purified, allowing you and your family to enjoy safe and healthy pure water.

Frequently Asked Questions about Water Purifiers

Q: What do the CP+RO+CB filtration system mentioned in the news refer to?

A: This refers to the three main filtration stages used in this water purifier: CP (composite filter element, used for preliminary filtration and adsorption), RO (reverse osmosis filter element, used for core deep purification, removing heavy metals, bacteria, etc.), and CB (post-activated carbon filter element, used to improve the taste of pure water).

Q: What contaminants does the reverse osmosis (RO) filter element mainly remove?

A: The RO membrane is the core of the water purifier, mainly removing heavy metal ions, scale, bacteria, viruses, and almost all dissolved solids from the water, forming the basis for achieving high-standard pure water.

Q: What does the 2:1 purification/discharge ratio of this water purifier mean?

A: This ratio is an indicator of a water purifier's water efficiency. A 2:1 ratio means that for every 2 parts of purified water produced, only 1 part of wastewater is discharged, which falls within the high water efficiency range and helps conserve water resources.

Q: What is the function of the "post-activated carbon filter (CB)" in a water purifier?

A: Its main function is as the final step, further adsorbing any trace amounts of residual odor in the water, thereby improving the taste and making drinking water sweeter.

Q: How often should I replace the water purifier's filter cartridges to ensure drinking water safety?

A: The replacement cycle for the filter cartridges depends on the water quality, usage frequency, and the type of filter cartridge (such as PP cotton, activated carbon, RO membrane). Generally, it needs to be replaced regularly according to the intervals recommended in the product manual, especially for the RO membrane, to ensure the continuous and efficient operation of the water purifier.