Water purification information

AICKSN water purifier: What is the difference between "water efficiency" and "wastewater ratio"?

Views : 109842
Update time : 2022-02-22 16:26:09
Due to the technical characteristics of cross-flow filtration, the reverse osmosis water purifier will definitely discharge concentrated water (commonly known as "wastewater"). In the industry, the term "wastewater ratio" is often used to refer to the utilization rate of water.
Then, the "water efficiency" in the national standard "Water Purifier Water Efficiency Limits and Water Efficiency Grades" (GB 34914-2021) (hereinafter referred to as the water efficiency standard) is the same as the "wastewater ratio" in the industry. What? What is the difference between the two?

01 Different test conditions and normative
The "wastewater ratio" is only an approximate ratio. The "water efficiency" needs to be tested in strict accordance with the test conditions stipulated in the "Water Efficiency Standard" before it can be rated.

02 Nominal requirements are different

"Wastewater ratio" does not require a label. After the implementation of the water efficiency standard, each reverse osmosis water purifier must be marked in a prominent position.


03 Representation is different

The "wastewater ratio" is expressed in a proportional way, for example, 1 part of purified water is produced and 1 part of concentrated water is discharged, and the "wastewater ratio" is expressed as 1:1. The "water efficiency" is expressed as a percentage. If the water efficiency is 60%, it means that the purified water obtained from the raw water is 60%, and the proportion of concentrated water discharged is 40%.


04 Different minimum limit requirements

After the implementation of the new water purifier water efficiency standard, the water purifier products on the market must meet the minimum level 3 water efficiency (45%) requirements. That is to say, "water efficiency" has minimum limit requirements, while "wastewater ratio" has no minimum limit requirements.
The above are some of the differences between "wastewater ratio" and "water efficiency". Another point to note is that both "wastewater ratio" and "water efficiency" are only applicable to reverse osmosis water purifiers.

05 Different meanings

The so-called "water efficiency" refers to the utilization efficiency of water resources, which is the ratio of the amount of purified water obtained to the total amount of water resources consumed. The water consumed by the water purifier for flushing is taken into account.

The "wastewater ratio" only examines the ratio of the flow rate of purified water to the flow rate of concentrated water discharged during water production by reverse osmosis membrane. It is enough to reflect the utilization efficiency of water resources, but only an operating parameter of the reverse osmosis water purifier.
Related News
Read More >>
Water health starts with choices: what kind of water purification equipment does your home need? Water health starts with choices: what kind of water purification equipment does your home need?
Dec .26.2024
Water is the source of life, but it can be a potential health killer. Understanding water quality issues and choosing the right water purification equipment is something that every family needs to think about. Hopefully, with the push of technology, we can better protect our own and our family's health and make water quality safety a part of our lives.
What you need to know about water purifiers? What you need to know about water purifiers?
Dec .26.2024
Each region's water quality is different, the need for different types of water purifiers, each family's needs are different, of course, the purchase is different, can not be generalized. So the question is, how in the end to choose? What exactly can different water purification devices filter? The common water filtration methods on the market are microfiltration, ultrafiltration, nanofiltration and RO reverse osmosis filtration. Tap water may contain sediment, rust, residual chlorine, odor, volatile organic compounds, macromolecules, colloids, bacteria, heavy metals and so on.
Household water purifier water dispenser selection guide: understand the filtration technology focus on water quality needs focus on brand after-sales Household water purifier water dispenser selection guide: understand the filtration technology focus on water quality needs focus on brand after-sales
Dec .25.2024
Household water purifier water dispenser selection guide: understand the filtration technology focus on water quality needs focus on brand after-sales service
When buying a water purifier, do we choose single or dual outlet water? When buying a water purifier, do we choose single or dual outlet water?
Dec .25.2024
Water filtered from water purifiers on the market is generally categorized into two types, purified water and pure water. Among them, pure water refers to H2O without impurities. Tap water is filtered through RO (reverse osmosis) membranes, which can remove heavy metals, organics, scale, bacteria, viruses and other harmful substances, filter out minerals, and turn into pure water. Pure water contains almost no other substances and can be drunk straight.