How does reverse osmosis work

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Language: en

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00:00:05.950 00:00:05.960 listen marries water recycling plant
00:00:08.570 00:00:08.580 uses reverse osmosis to further treat
00:00:11.209 00:00:11.219 wastewater after the ultra filtration
00:00:13.070 00:00:13.080 process reverse osmosis membranes are
00:00:16.670 00:00:16.680 constructed from a membrane flat sheet
00:00:18.740 00:00:18.750 it is comprised of three layers a
00:00:21.519 00:00:21.529 polyester fabric support base a micro
00:00:24.679 00:00:24.689 porous poly cell phone layer and a point
00:00:27.349 00:00:27.359 two micron thick polyamide barrier layer
00:00:31.200 00:00:31.210 the poly cellphone lair strengthens the
00:00:33.810 00:00:33.820 very thin barrier layer it is the
00:00:36.240 00:00:36.250 barrier layer that removes nutrients
00:00:38.280 00:00:38.290 chemicals bacteria and viruses from the
00:00:41.490 00:00:41.500 water
00:00:45.260 00:00:45.270 the membrane flat sheet is combined with
00:00:48.350 00:00:48.360 a sheet of feed channel spacer this
00:00:50.780 00:00:50.790 provides turbulence and creates space
00:00:53.150 00:00:53.160 between the membrane sheets for the feed
00:00:55.250 00:00:55.260 00:00:58.600 00:00:58.610 a sheet of permeate spacer is added to
00:01:01.240 00:01:01.250 the membrane sheets and feed channel
00:01:03.160 00:01:03.170 spacer this enables the final recycled
00:01:06.400 00:01:06.410 water product or permeate to flow evenly
00:01:09.310 00:01:09.320 across the entire membrane surface even
00:01:12.130 00:01:12.140 under high pressure the back of the
00:01:14.800 00:01:14.810 membrane is completely sealed to the
00:01:17.080 00:01:17.090 edges of the permeate spacer the
00:01:19.810 00:01:19.820 membrane sheets are glued along each of
00:01:21.820 00:01:21.830 the three exposed sides and rolled
00:01:24.250 00:01:24.260 around the core tube
00:01:27.930 00:01:27.940 feedwater is forced through the feed
00:01:30.310 00:01:30.320 channel spacer and into the barrier
00:01:32.350 00:01:32.360 layer of the membrane water passes
00:01:34.900 00:01:34.910 through the membrane surface into the
00:01:36.880 00:01:36.890 permeate channel it flows in a spiral
00:01:39.400 00:01:39.410 direction and collects in the core tube
00:01:42.030 00:01:42.040 this water is the final recycled water
00:01:45.280 00:01:45.290 product or permeate there are seven
00:01:48.430 00:01:48.440 spiral wound elements loaded in one
00:01:50.290 00:01:50.300 pressure vessel once the end adapter is
00:01:53.140 00:01:53.150 connected to the last element and the
00:01:54.910 00:01:54.920 pressure vessel is sealed feed water can
00:01:57.340 00:01:57.350 be introduced feed water is pumped at
00:02:00.160 00:02:00.170 high pressure into the vessel as it
00:02:02.260 00:02:02.270 travels small molecules like water pass
00:02:05.080 00:02:05.090 through the membrane while larger
00:02:07.300 00:02:07.310 particles such as salt bacteria and
00:02:09.639 00:02:09.649 viruses do not the final recycled water
00:02:13.150 00:02:13.160 product is collected from the end of the
00:02:15.370 00:02:15.380 elements the concentrate or reject from
00:02:18.280 00:02:18.290 that vessel flows to another stage
00:02:20.400 00:02:20.410 producing more recycled water
00:02:24.730 00:02:24.740 at st. Mary's there are six
00:02:26.800 00:02:26.810 reverse-osmosis treatment trains each
00:02:29.050 00:02:29.060 with three stages this design produces
00:02:32.200 00:02:32.210 the highest amount of recycled water
00:02:33.940 00:02:33.950 with reduced concentrate waste stage one
00:02:38.260 00:02:38.270 has 52 pressure vessels
00:02:40.120 00:02:40.130 Stage two has 24 pressure vessels and
00:02:43.150 00:02:43.160 stage three has 12 pressure vessels 58
00:02:47.590 00:02:47.600 million litres of feed water enters the
00:02:49.870 00:02:49.880 reverse osmosis system on a daily basis
00:02:52.780 00:02:52.790 as the feed water passes through each
00:02:55.270 00:02:55.280 stage more recycled water is extracted
00:02:58.800 00:02:58.810 65% of recycled water is extracted at
00:03:01.720 00:03:01.730 stage 1 the remaining 35% is passed
00:03:05.380 00:03:05.390 through stage 2 where a further 10% is
00:03:08.560 00:03:08.570 extracted the final 25% is passed
00:03:11.860 00:03:11.870 through stage 3 where the last 5% of
00:03:15.010 00:03:15.020 recycled water is extracted 80% of all
00:03:18.490 00:03:18.500 feed water is recovered as recycled
00:03:20.890 00:03:20.900 water an average of 50 million litres of
00:03:23.740 00:03:23.750 recycled water is produced every day
00:03:25.870 00:03:25.880 it's in marries the remaining
00:03:27.880 00:03:27.890 concentrate contains so much salt and
00:03:30.220 00:03:30.230 impurities that to recycle it would not
00:03:32.710 00:03:32.720 make economic sense this concentrate
00:03:35.290 00:03:35.300 stream of 8 million litres a day is sent
00:03:37.750 00:03:37.760 to North Head wastewater treatment plant
00:03:39.760 00:03:39.770 where it is treated and released into
00:03:41.890 00:03:41.900 the ocean
00:03:43.700 00:03:43.710 you
00:03:44.130 00:03:44.140 00:03:57.590 00:03:57.600
Office location
Engineering company LOTUS®
Russia, Ekaterinburg, Lunacharskogo street, 240/12

Phone: +7 343 216 77 75

E-mail: info@lotus1.ru

Sales phone

Russia: +7 343 216 77 75

WhatsApp: +79122710308