American water machine suπ'itable for large scale in China'€φ↔s first reason is that the utilizα&ation of the raw wat★"πer is too low, too mucδ'h waste of water resour∏ε∏×ces. Such as: We have in the winter ce×±nsus of domestic water machine u& ₽sage, we found that mos₽♥★t water machine utilization i '★s less than 10% of the ra₽♣×w water, which is an Ame™↓rican-pure water and a tδ₹ε↕echnical defect. Its sh'↑& ortcomings are detailed below©πΩλ:
1, RO membrane American factory s¥αtandards recommended by the inven÷←tion is the utilization of ra₹Ω✘∑w water is very low.
The core technology is well known that∞< pure water is the use of¶×★ reverse osmosis mem≥✔↑₹brane American invention (RO m♥♥★™embrane) water pu'rification technology, RO reverse↕ε®↓ osmosis membrane filtratio φ∑n precision of up to 0.0001um, almost γ•everything can filter out impuritie≈"s and salt water outside. But th♦®☆e negative effects of high-preci<εsion RO membrane is that it c★§←αan easily be fouling.
To prevent fouling RO membrane is₹∏∏↔, RO membrane water machine•>∏ in the American productΩ>λion of pure water at≥α the same time, we must ensure a " sufficient amount of raw water wash ROδ&↓ membrane surface. Dow famous Ameri<α∏♦can company produces the raw water ≠♥♣±RO membrane efficiency (raw water &✘$★efficiency = water / wat®™∞¶er + concentrated water) recomm←€£↓ended value is 15% (∞≤single film), that is, its exper&imental verification of r✔≥aw water usage by 15%γ$ the proportion of d→≥∞esign, the RO membrane w↓ Ωater turbulence can produce good effec₩×∞t and diffusion effect of salt so th€✘₽←at it can better clean u↑★p dirt accumulation film, name←×ly 15% the proportion of flushi ng the best results.↕" Therefore recommended by →∑£©Dow RO membrane raw water utilizaσ€α¥tion is 15%.
2, produced by the RO membrαφ↔ane water characteristic t↓β$>emperature impact, water temperatur₩¥e decrease in the util≥λization of its raw wa∑±ter will be further reduced.
US Dow RO membrane recommended u ♣tilization 15% of th★✘®€e raw water RO membrane∏×¥β refers to the standard conditions ←↔∏that the water temperature is 25 de↕€grees Celsius when the raw water utπ★ilization. More positive temperature co★β ₹efficient estimates ba→<₩¶sed on product water RO membranes ±≥β provided by Dow in theφ water temperature 5-40 ℃ operating tem₩φ ≤perature range, the temperature <®drops 1 degree every production of pure££&Ω water RO membranes to b∏πλ∑e down about 3% (&quo®•±t;Dow Technical Handbook "2008 e♠→dition). If the water temperatur§σ™$e is reduced from 25 degree←$s to below 8 degrees Celsiu¶s, the original water efficiency will✘₽↕ be reduced by 50%, that in t≠≠he winter Dow membran≤♥γe Raw water usage wiγ♦ll be reduced to 7.5%¶φ or less.
3, easy RO membrane fouling blocking Ωε♦more so that the utilization ∑♣of the raw water is furt∞÷∑her reduced.
Already mentioned above, the≈© domestic promotion is very €↑•easy when RO membrane fouling,₩★π mainly due to: (1) low precisi¥£on American household water pr→±etreatment, can not is still i↓φ∞βn the low level of water pret≥±reatment standard high standardsφ¥, a direct result of R O membrane emphasis upon×★& domestic workload, prone to foul ing phenomena; (2♠±1; American household water pretreatσ≈±←ment using sodium dir§ε&ty filter, its work with γ¶↕the increase in pre-filt ☆ers dirt holding capacity, "'↑•water will It will be blocke¶¥d, and the attenuation of σ®water flow will direα≈ ←ctly lead to inadequa×→"₹te water flow wash RO membra∞<ne; (3) a number of manufactur≈±™εers to meet customer require₽↓¶✔ments for raw water to improve ♣♣×the utilization of a simple adjuφ≤stment of the raw water utilizatio$$n increased to 25%, ÷∏πwhich artificially cause RO membrane flβ™₩ushing water proportion of direct₩♥ reduced, weakening the flus©∑× hing effect of making RO↔©☆ε membrane fouling accelerated.
Fouling RO membrane blocking a dir ↓•ect result of lower ut¶♥ilization of raw water, ↓π§as far as we in the national ÷survey, the new machi★×↑ne uses half purified water capac✔©λity RO membrane will generally be ab≠✔ ₹out 50% attenuation. &$
In summary, in the winter'±↓÷, has been used for more than half of "ε≥the raw water utilization wΩ™"ater machine will almost ≥ $<certainly <10% (or •δγ25% * 50 * 50 * = 6.25 <1™φ>0%), which has been sλλurprising. We in the winter census o♥ f domestic water machine, wate<<r machine found in most rΩ<©aw water utilization has bγ↕π♦een lower than 10%; thereβ★fore, although the reverse osmosis ♠☆ technology to bring clean dri≠'nking water, but American ★pure water to very low uti'♦$'lization rate of water resources wβ¥™£orrying.
And the consequences of th§≥e low utilization rate'×"> of the raw water is ε¥not only wasteful of water,ε'≤φ but has been pre-purified☆ water, in other words i≤&&t increases the pre-fi∑σlter unnecessary consum€∞'ption.
American Water Purifier Situa✘←>★tion and China advocate ₩≥of "energy, saving" requi"Ωrements of scientifi <c development concept and bui"×lding a conservation-oriented society ≥→δis the phase deviati↕♠<on. Although many pe≤✔¥ople in the wastewat®÷er discharged water mach<α∞ine secondary reuse, an®d recycling of the wε±ay but the quality of this recove₹♠ry is not satisfactory after all.≤₹★ Practice so that we o≥φ¥nce again recognize that: "water ¶™fee" American water machin₩☆e inappropriate large scale in China×≤★™ must be "water-saving techε nology" innovatλ♥'→ion and product innovation.