How to Buy a Household Water Purifier:
Household water purifiers typically consist of several stages, including a pre-filter, activated carbon filter, ion exchange resin, hollow fiber membrane, and reverse osmosis membrane. To choose the best and most practical water purifier, consider the following key factors:
First, opt for well-known brands. It's essential to prioritize product quality when purchasing a water purifier. The manufacturer should hold a sanitation license from the relevant health authorities and meet national drinking water quality standards. This ensures that the product is safe and reliable.
Second, understand the price range and filtration effectiveness. Different types of water purifiers vary in both cost and performance. A basic single-stage purifier usually includes an activated carbon filter, which is good for removing large particles and improving taste but not suitable for direct consumption. These models are generally inexpensive, ranging from around 10 to 150 yuan.
A multi-stage purifier offers better filtration with two coarse filters and one fine filter, often using a hollow fiber membrane. This type of purifier can provide clean water directly without boiling, making it ideal for daily use. Mid-range models typically cost between 300 and 500 yuan, offering a good balance of price and performance.
The most advanced option is the reverse osmosis (RO) purifier. It includes three stages of pre-filtration, one stage of RO membrane filtration, and a final post-filter. This system effectively removes bacteria, viruses, heavy metals, pesticides, organic compounds, minerals, and odors, producing pure water that can be consumed directly. These high-end units usually cost between 3,000 and 5,000 yuan.
Third, choose based on your local water quality. In areas with hard water, such as northern China or limestone regions in the south, look for purifiers with ion exchange resin to reduce mineral buildup. In cities where tap water has a strong chlorine smell or organic contaminants, a purifier with a high-activated carbon capacity will help remove these impurities more effectively.
If your water is turbid or heavily polluted, consider a purifier with dual-stage filtration that can handle bacteria, viruses, and other harmful substances. If you don’t need to drink the purified water directly, a reverse osmosis system is still a great choice for comprehensive purification.
Common types of water purifiers include: 1. Direct drinking fountains 2. Pure water machines 3. Water softeners 4. Kitchen water purifiers 5. Central water purifiers 6. Live water purifiers.
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