What is the difference between a RO water purifier with wastewater or without wastewater?

RO Water Purifier

Many people feel that it is wasteful when they hear that RO water purifiers produce wastewater. Some people are entangled with the amount of wastewater when buying water purifiers, and even give up buying reverse osmosis water purifiers (pure water machines) because of wastewater problems. In fact, this is a bit of a fuss. The so-called wastewater is equivalent to the water filtered by the first three stages of the water purifier, and it can be recycled for mopping the floor, watering flowers, flushing the toilet, etc.!

1. How does the RO Water Purifier wastewater come from?

Generally speaking, the wastewater we often talk about refers to reverse osmosis water purifiers, which are pure water machines. A wastewater pipe is connected during the water purification process to discharge wastewater. The main component is the reverse osmosis membrane interception. Bacteria, viruses, organic matter, heavy metal ions, etc., are harmful to human health.

After the RO membrane is energized and pressurized for a period of time, water molecules flow out from one side under the action of pressure, and the "garbage" in the remaining water accumulates on the other side of the RO membrane. When they accumulate to a certain extent, It will cause the RO membrane to be blocked and affect the service life of the RO membrane. In order to avoid this situation, smart R&D personnel came up with wastewater discharge technology.

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2. What is the difference between a RO water purifier with wastewater or without wastewater?

In fact, the difference between a RO water purifier with wastewater or without wastewater is the difference between reverse osmosis water purifiers and ultrafiltration machines.

Reverse Osmosis water purifier
(1) The reverse osmosis water purifier has high filtration accuracy, which can filter out harmful substances in the water and improve the taste and smell of the water.
(2) The reverse osmosis water purifier can only be used when it is attached to electricity. The RO membrane structure is complex and the production cost is high, so the price is slightly more expensive.

Ultrafiltration water purifier
(1) The ultrafiltration machine needs no electricity, no wastewater, and has a large filtering capacity.
(2) The effluent from the ultrafiltration water purifier does not meet the national drinking standards, so direct drinking is not allowed.

3. Which water purifier is better for household use?

If you are entangled in choosing an RO water purifier or ultrafiltration machine, it is recommended to choose a water purifier with double membrane and double water, which is equivalent to a combination of an ultrafiltration machine & a pure water machine, that is, you will get better domestic water and you also can straight to drink.

4. Wastewater from the water purifier can be reused.

Finally, there is no need to worry about wastewater problems, because reverse osmosis water purifiers are generally only used for drinking water filtration. Based on the calculation of 2 liters of water per person per day, a family of 3 will waste up to 18 liters of water per day, which is about 6.57 tons of waste a year Water (calculated as 365 days) is economically within the acceptable range!

So we don't have to worry about this waste. In addition, wastewater is not useless. Before it is filtered by RO reverse osmosis membrane, the "wastewater" has been filtered through the first three-stage filter element to remove most of the impurities in the tap water. In addition to the salt content of such water is slightly higher than that of tap water, other indicators, such as turbidity, chroma, organic matter, colloids, etc., are much lower than tap water. This kind of water is definitely not wastewater, it is called "concentrated water". Therefore, if the water is collected, it can be recycled and used for daily cleaning, washing, watering, etc.


Post time: Jan-04-2021

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