What is the meaning of reverse osmosis?
Reverse Osmosis is a water purification technology. The most common use of RO is to reduce the water hardness and eliminate contaminants like Fluoride, Arsenic, Lead.
What is the full form of RO?
Reverse Osmosis is the full form of RO.
What is the use of TDS in water purifier?
TDS full form is Total dissolved solids. There is no use of it, it is simple a measure of hardness. Water with the 500 mg/l TDS value is considered as very hard.
What is the meaning of RO in Hindi?
RO is acronym for Reverse Osmosis. 'R' from Reverse, 'O' from Osmosis. 'John' is a name in English, and it is same meaning in Hindi also John.
What is RO MF?
MF is full form of Micro filtration purification technology. In MF purification the water is passed through a special pore-sized membrane to separate microorganisms. Both reverse osmosis and nano filtration are fundamentally different since the flow goes against the concentration gradient.

In a recent research found that if MF filtration is used as pre-filtration, before RO purification, the purification results are much effective. Kent released such MF + RO purifiers in the market as well.
UF/MF as RO pre-treatment: the real benefit

Ultrafiltration (UF) and microfiltration (MF) are theoretically the best pre-treatment upstream reverse osmosis, removing from the feed water most of the potential elements responsible of desalinating membranes fouling such as particles, turbidity, bacteria and large molecular weight organic maters. Those clarification membranes reduce also significantly the silt density index below 3 (100%) [1–6] and generally below 2. Many papers present results about the efficiency of UF/MF regarding clarification efficiency. UF/MF can be an economical option for RO pre-treatment. Several evaluations of the cost of UF/MF upstream RO demonstrate the interest of this pre-treatment technology on average to bad water qualities, compared to a double filtration steps conventional pre-treatment. In that case, and on a long-term operation basis, the treatment line is economically viable [7]. However, UF/MF remains more costly than a single filtration on mono or multimedia filter: UF/MF is not economically applicable on the best water quality to pre-treat. Nevertheless, UF/MF technology has some limits. If this technology is economically viable on average to bad water qualities, UF/MF direct filtration can overpass the technical limits of the process, generating the need of frequent cleanings. In that case, the RO fouling is moved upstream to the pre-treatment stage. Moreover, the clarification membranes, with cut off generally higher than 100,000 kd, do not remove the smaller organic matter molecules responsible of the biofouling development on RO membranes. In this situation, it is very difficult to demonstrate the real technical advantage of UF/MF on the RO operation, since this demonstration needs a longterm study (more than one year depending on the application) with side-by-side technologies to compare, and the results appear to be site specific. Solution of this double problem, UF/MF fouling on average to bad surface seawater and biodegradable organic matters removal, can be found in the treatment line, enhancing the UF/MF treatment by adding a precoagulation/settling of flotation. The benefits of this association of technologies are multiples, as it was developed for the treatment on surface water one decade ago for drinking water production. Moreover, the benefit of the coagulation/separation on the design (filtration flux) and operation (frequency of cleaning, membrane life duration) can significantly improve the economical balance of the process. It also allows a definitive advantage.

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