I’ve always said that every product from ChengrongEra is unlike any other.
It’s not just about manufacturing quality, structural design, and functionality being different, we also use distinct terminology.
What we call "micro-ultra membrane" is known as "external pressure membrane" elsewhere.
What we refer to as "ultrafiltration membrane" is commonly called "internal pressure membrane."
Admittedly, such more professional nomenclature may hinder communication, as it requires consumers to learn anew. However, we hope ChengrongEra will stand as a high-end brand dedicated to and specialized in pipeline ultrafiltration water purifiers.
This means we not only hold ourselves to the top 1% standards in the industry for manufacturing quality but also ensure that all our innovations and upgrades are considered from both a professional perspective and the users' convenience.
We never pursue differentiation for the sake of being different, nor do we create selling points and demands out of thin air just to make a splash. That would go against our original aspiration: to make solid products with sincerity and build the brand with integrity.
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Now, many consumers know that using external pressure membranes to filter yellow muddy water delivers excellent results.
This is because they boast high precision, just 0.1 microns, making them extremely effective at intercepting granular impurities like yellow mud, sediment, and rust in water.
However, this high precision also makes the membrane filaments prone to fouling. Once fouled, water flow will gradually decrease, significantly compromising the water usage experience throughout the house.
The common industry practice is to remove the filter element for hand rubbing, or rinse the membrane filament surface with a high-pressure gun. But I have been explaining in my videos that hand washing alone cannot fully clean external pressure membranes. It only removes impurities on the surface of the membrane filaments; impurities trapped in the 0.1-micron micropores cannot be washed away.
Many users report that the more they wash their external pressure membranes, the lower the water flow becomes.
In fact, this is because simple hand washing fails to clean out the impurities inside the micropores. As a result, the longer the external pressure membrane is used, the more micropores get fouled, and the lower the membrane flux becomes.
Now, more and more people are promoting the concept of backwashing. But for external pressure membranes, backwashing alone does not yield good results.
The reason is that the volume of clean water used for backwashing is too small relative to the total membrane area of the entire membrane filament.
A colleague of mine drew a diagram, it’s not the neatest in terms of handwriting, but it illustrates the point very clearly.
To fully clean an external pressure membrane, by "fully clean," we mean removing impurities not only from the surface of the membrane filaments but also from the micropores within them, so that the membrane flux, which declines as the filter element fouls, can be partially restored.
Currently, there is only one way to achieve this: hand washing while simultaneously backwashing. This is also the biggest difference between ChengrongEra products and others on the market.
Apart from ChengrongEra’s pre-filter micro-ultra water purifiers, it is hard to find a second product on the market that enables hand washing and backwashing at the same time.
Additionally, to slow down filter element fouling, I also advise users to drain sewage frequently—ideally 1 to 2 times a day. Sewage drainage reduces the turbidity inside the cylinder, which in turn slows down fouling.
You can collect the water discharged from the sewage outlet every day and use it for watering vegetables, flowers, or even mopping the floor.
If you cannot manually drain sewage every day, you can buy an electric valve and a timer from the market to enable automatic sewage drainage for the device.
Alternatively, you can purchase ChengrongEra’s electromagnetic sewage valve, which comes with a built-in timing function.
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To sum up, there are two effective ways to slow down the fouling of external pressure membranes.
First, the external pressure membrane must be removed for hand washing. The only most effective cleaning method is to hand wash it while backwashing the membrane filaments simultaneously—this can flush out impurities clogging the micropores.
Second, drain sewage frequently, ideally 1 to 2 times a day. If you cannot manually drain sewage daily, you can purchase ChengrongEra’s electromagnetic valve, which has a built-in timing function to enable automatic daily sewage drainage for the device.
Chengrong Era Ultrafiltration, Customers have No Worries
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After-sales support for 10 years
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