00:00:01.140 [Music] 00:00:05.95000:00:05.960 listen marries water recycling plant 00:00:08.57000:00:08.580 uses reverse osmosis to further treat 00:00:11.20900:00:11.219 wastewater after the ultra filtration 00:00:13.07000:00:13.080 process reverse osmosis membranes are 00:00:16.67000:00:16.680 constructed from a membrane flat sheet 00:00:18.74000:00:18.750 it is comprised of three layers a 00:00:21.51900:00:21.529 polyester fabric support base a micro 00:00:24.67900:00:24.689 porous poly cell phone layer and a point 00:00:27.34900:00:27.359 two micron thick polyamide barrier layer 00:00:31.20000:00:31.210 the poly cellphone lair strengthens the 00:00:33.81000:00:33.820 very thin barrier layer it is the 00:00:36.24000:00:36.250 barrier layer that removes nutrients 00:00:38.28000:00:38.290 chemicals bacteria and viruses from the 00:00:41.49000:00:41.500 water 00:00:45.26000:00:45.270 the membrane flat sheet is combined with 00:00:48.35000:00:48.360 a sheet of feed channel spacer this 00:00:50.78000:00:50.790 provides turbulence and creates space 00:00:53.15000:00:53.160 between the membrane sheets for the feed 00:00:55.25000:00:55.26000:00:58.60000:00:58.610 a sheet of permeate spacer is added to 00:01:01.24000:01:01.250 the membrane sheets and feed channel 00:01:03.16000:01:03.170 spacer this enables the final recycled 00:01:06.40000:01:06.410 water product or permeate to flow evenly 00:01:09.31000:01:09.320 across the entire membrane surface even 00:01:12.13000:01:12.140 under high pressure the back of the 00:01:14.80000:01:14.810 membrane is completely sealed to the 00:01:17.08000:01:17.090 edges of the permeate spacer the 00:01:19.81000:01:19.820 membrane sheets are glued along each of 00:01:21.82000:01:21.830 the three exposed sides and rolled 00:01:24.25000:01:24.260 around the core tube 00:01:27.93000:01:27.940 feedwater is forced through the feed 00:01:30.31000:01:30.320 channel spacer and into the barrier 00:01:32.35000:01:32.360 layer of the membrane water passes 00:01:34.90000:01:34.910 through the membrane surface into the 00:01:36.88000:01:36.890 permeate channel it flows in a spiral 00:01:39.40000:01:39.410 direction and collects in the core tube 00:01:42.03000:01:42.040 this water is the final recycled water 00:01:45.28000:01:45.290 product or permeate there are seven 00:01:48.43000:01:48.440 spiral wound elements loaded in one 00:01:50.29000:01:50.300 pressure vessel once the end adapter is 00:01:53.14000:01:53.150 connected to the last element and the 00:01:54.91000:01:54.920 pressure vessel is sealed feed water can 00:01:57.34000:01:57.350 be introduced feed water is pumped at 00:02:00.16000:02:00.170 high pressure into the vessel as it 00:02:02.26000:02:02.270 travels small molecules like water pass 00:02:05.08000:02:05.090 through the membrane while larger 00:02:07.30000:02:07.310 particles such as salt bacteria and 00:02:09.63900:02:09.649 viruses do not the final recycled water 00:02:13.15000:02:13.160 product is collected from the end of the 00:02:15.37000:02:15.380 elements the concentrate or reject from 00:02:18.28000:02:18.290 that vessel flows to another stage 00:02:20.40000:02:20.410 producing more recycled water 00:02:24.73000:02:24.740 at st. Mary's there are six 00:02:26.80000:02:26.810 reverse-osmosis treatment trains each 00:02:29.05000:02:29.060 with three stages this design produces 00:02:32.20000:02:32.210 the highest amount of recycled water 00:02:33.94000:02:33.950 with reduced concentrate waste stage one 00:02:38.26000:02:38.270 has 52 pressure vessels 00:02:40.12000:02:40.130 Stage two has 24 pressure vessels and 00:02:43.15000:02:43.160 stage three has 12 pressure vessels 58 00:02:47.59000:02:47.600 million litres of feed water enters the 00:02:49.87000:02:49.880 reverse osmosis system on a daily basis 00:02:52.78000:02:52.790 as the feed water passes through each 00:02:55.27000:02:55.280 stage more recycled water is extracted 00:02:58.80000:02:58.810 65% of recycled water is extracted at 00:03:01.72000:03:01.730 stage 1 the remaining 35% is passed 00:03:05.38000:03:05.390 through stage 2 where a further 10% is 00:03:08.56000:03:08.570 extracted the final 25% is passed 00:03:11.86000:03:11.870 through stage 3 where the last 5% of 00:03:15.01000:03:15.020 recycled water is extracted 80% of all 00:03:18.49000:03:18.500 feed water is recovered as recycled 00:03:20.89000:03:20.900 water an average of 50 million litres of 00:03:23.74000:03:23.750 recycled water is produced every day 00:03:25.87000:03:25.880 it's in marries the remaining 00:03:27.88000:03:27.890 concentrate contains so much salt and 00:03:30.22000:03:30.230 impurities that to recycle it would not 00:03:32.71000:03:32.720 make economic sense this concentrate 00:03:35.29000:03:35.300 stream of 8 million litres a day is sent 00:03:37.75000:03:37.760 to North Head wastewater treatment plant 00:03:39.76000:03:39.770 where it is treated and released into 00:03:41.89000:03:41.900 the ocean 00:03:43.70000:03:43.710 you 00:03:44.13000:03:44.14000:03:57.59000:03:57.600
Office location
Engineering company LOTUS®
Russia, Ekaterinburg, Lunacharskogo street, 240/12