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Postfiltration B video_A32A80D9_C1DA_C47D_4151_D67377043EF9.label = Experience the Grand Canyon, From Rim to River National Geographic album_48D6979D_635F_8D6B_41D0_665BECD0C4CD.label = Photo Album schema-traitement panorama_569B2C06_72E3_94A8_41D2_C2A711A2DB12.label = The Tailfer production facility video_4D428CAB_62F3_FCA8_41C2_16B492FF3160.label = Vue du ciel video_29172D07_7762_94A8_41DD_44EADA7DDA34.label = filtre video_713A9793_616D_8D78_41B6_6E63A7E0FA5D.label = logo-reveal album_48D6979D_635F_8D6B_41D0_665BECD0C4CD_0.label = schema-traitement video_4AE3AB91_72A6_93A8_41D7_F27B78F64DCA.label = station-nourriciere video_4EAADE73_7366_9568_41D2_2502EF96F1BA.label = tamis video_48DD5DC5_6357_BCD8_4174_2341287B7DEC.label = vivaqua-complexe-tailfer ### Video videolevel_8569244C_C2E2_C1E8_41E5_8FB1F614B4F1.url = media/video_29172D07_7762_94A8_41DD_44EADA7DDA34_fr.mp4 videolevel_8569244C_C2E2_C1E8_41E5_8FB1F614B4F1.posterURL = media/video_29172D07_7762_94A8_41DD_44EADA7DDA34_poster_fr.jpg videolevel_865A75C1_C2E1_42D8_41C8_84CBD6D68150.url = media/video_48DD5DC5_6357_BCD8_4174_2341287B7DEC_fr.mp4 videolevel_865A75C1_C2E1_42D8_41C8_84CBD6D68150.posterURL = media/video_48DD5DC5_6357_BCD8_4174_2341287B7DEC_poster_fr.jpg videolevel_856DA4AC_C2E2_C2A8_41BB_EFA618DA1505.url = media/video_4AE3AB91_72A6_93A8_41D7_F27B78F64DCA_fr.mp4 videolevel_856DA4AC_C2E2_C2A8_41BB_EFA618DA1505.posterURL = media/video_4AE3AB91_72A6_93A8_41D7_F27B78F64DCA_poster_fr.jpg videolevel_8657B6A2_C2E1_4158_41CF_AF925415EFA9.url = media/video_4D428CAB_62F3_FCA8_41C2_16B492FF3160_fr.mp4 videolevel_8657B6A2_C2E1_4158_41CF_AF925415EFA9.posterURL = media/video_4D428CAB_62F3_FCA8_41C2_16B492FF3160_poster_fr.jpg videolevel_8591F3C1_C2E2_C6D8_41E5_82FD3A12B5E8.url = media/video_4EAADE73_7366_9568_41D2_2502EF96F1BA_fr.mp4 videolevel_8591F3C1_C2E2_C6D8_41E5_82FD3A12B5E8.posterURL = media/video_4EAADE73_7366_9568_41D2_2502EF96F1BA_poster_fr.jpg videolevel_8640B540_C2E1_43D8_41C1_679FD7A8CD42.url = media/video_713A9793_616D_8D78_41B6_6E63A7E0FA5D_fr.mp4 videolevel_8640B540_C2E1_43D8_41C1_679FD7A8CD42.posterURL = media/video_713A9793_616D_8D78_41B6_6E63A7E0FA5D_poster_fr.jpg videolevel_8BDAC71A_C2E2_CF68_41D2_B3BFA0C760E5.url = media/video_A32A80D9_C1DA_C47D_4151_D67377043EF9_fr.mp4 videolevel_8BDAC71A_C2E2_CF68_41D2_B3BFA0C760E5.posterURL = media/video_A32A80D9_C1DA_C47D_4151_D67377043EF9_poster_fr.jpg ### Video Subtitles ## Popup ### Body htmlText_C1A7F2E3_C15E_8B54_41E3_D54088940735.html =
This rock is known as the “Shaman Seat” and features many Native American Anasazi (Ancestral Puebloan) petroglyphs on it. Seen on the north side of the Colorado River near Tanner Rapid, there is a trail leading by it up to a lookout ruin atop a bluff.
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Welcome to the 360° virtual tour of the Tailfer water facility!


To get the most of our experience, open the tour on desktop.


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Chlorination: safeguards water quality during transport


Chlorination occurs at the end of treatment. In order for the water to remain drinkable until its final destination, chlorinated water is injected into it, which will prevent any bacteria development.
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Control room: the plant operators


The electromechanical technicians in the control room control the plant. They adjust water flows according to demand and all of the processing parameters.


They monitor the proper functioning of the plant 24/7 and can intervene in the event of a failure.


The plant produces between 60,000
and 180,000 m³ of water per day.
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Decantation: separation of sludge from the water


In this building, the water containing flocs undergoes decantation in two steps.


The first is pulsed and occurs in the pulsators. The water undergoes an upward suction movement and then a downward release movement.


Due to this back-and-forth movement, the flocs are separated from the water and can be recovered and taken away to sludge treatment.


The second decantation is static, taking place in long tunnels at the bottom of which the flocs still present in the water are deposited.


The clarified water is then ready for filtration.
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Delivery: on the way to the consumer and to Brussels


The water passes through two buffer tanks and is delivered by high pressure pumps to the Bois-de-Villers reservoir after passing under the Meuse.


From this reservoir, the water is transported by gravity and under pressure to the 3 Regions of the country.
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Emergency diesel generators:
self-sufficiency


Four powerful diesel generators (4,000 HP each) can provide the plant's entire power supply in the event of a network failure.
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Filtration


Next, the water passes through five biological filters, passing from top to bottom through an 80cm layer of granular activated carbon and then a 40 cm layer of sand.


Suspended particles are mechanically retained and dissolved organic matter is partially degraded by micro-organisms that develop in the filter mass.


When a filter is clogged, it is cleaned in two stages, first with compressed air and then with water (see video).


The washing water is sent to sludge treatment.
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Injection of reagents: chemistry comes into play


From this step until the ozonation outlet, the plant is divided into four independent modules. In each of them, the water passes through a series of tanks where it receives different reagents.


Sulphuric acid reduces the pH of the water from the Meuse to an optimal value to enable the various elements present in the water to coagulate properly. Aluminium sulphate enables this coagulation.


Particles suspended in the water bind together into small clumps, called flocs.


These clumps, weighed down by the injection of activated silica, can be separated from the water in the next step: decantation. This process is called flocculation.
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Ozonation: water disinfection


The water receives a second dose of ozone produced on-site.


Here, the ozone disinfects the water by destroying bacteria, viruses and other infectious micro-organisms.


This step ensures the water is drinkable.
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Post-filtration: refinement


Post-filtration A: the pump room


Water is pumped upwards to be sent to the granular activated carbon filters.


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Post-filtration: refinement


Post-filtration B: granular activated carbon


Filtration through 3 metres of granular activated carbon improves the biological stability of the water and removes any pesticides that may still be present.
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Post-filtration: refinement


Post-filtration C: the outlet to the treated water tanks


Caustic soda is injected at this stage. It will correct the aggressiveness of the water
(aggressiveness resulting from the injection of reagents at the start of treatment).


Next, the drinking water is sent to the storage tanks, after receiving an injection of chlorinated water.
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Pre-ozonation: pre-treatment


Here, the sieved raw water undergoes oxidation by an initial injection of ozone, produced on-site from the ambient air.


Oxidation breaks up the large molecules present in water. This is intended to enable the chemical reagents injected in the next step to perform their role as effectively as possible.
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The laboratory: quality control


The chemists in the Tailfer laboratory monitor the quality of the Meuse water and the treatment process, which they adapt according to the quality of the resource, which varies according to the seasons or weather events.
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The intake station: abstraction


VIVAQUA abstracts the water from the Meuse using two water inlets placed in the riverbed, approximately 20 metres from the bank. VIVAQUA pumps an average of between 1 and 2 m³ of water per second.
A third emergency inlet, just below the surface of the river, can be activated if necessary.


The water inlets are equipped with large-mesh grates (30 x 30 mm) that catch gravel and large debris.


When the water level rises, the inlets become clogged. In that case, an automatic compressed air system helps to clear them (see video). The water arrives at the intake station and passes through small-mesh rotary sieves that mainly catch small shell, leaf and wood debris.


Next, pumps bring the water to the highest point of the plant. From there, the water starts being treated and circulates in the plant due to gravity, until ozonation.
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Tailfer: technology in the
service of water...


The Tailfer production facility converts raw water from the Meuse into drinking water and provides 30% of VIVAQUA’s total production. It is VIVAQUA’s only surface water catchment site. The majority of the water produced by VIVAQUA is of underground origin.


Location


Profondeville (Lustin), 9 km south of Namur, on the right bank of the Meuse.


Production capacity


The maximum flow rate that can be captured in the Meuse is 3 m³/second, i.e. 260,000
m³/day. The plant has a modular design and is divided into four units of 60,000 m³/day.
The production capacity in long-term regime is 180,000 m³/day and 240,000 m³/day in peak state. Tailfer is VIVAQUA’s largest catchment site.
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Tailfer: technology in the service of water...


The Tailfer production facility converts raw water from the Meuse into drinking water and provides 30% of VIVAQUA’s total production. It is VIVAQUA’s only surface water catchment site. The majority of the water produced by VIVAQUA is of underground origin.


Location


Profondeville (Lustin), 9 km south of Namur, on the right bank of the Meuse.


Production capacity


The maximum flow rate that can be captured in the Meuse is 3 m³/second, i.e. 260,000
m³/day. The plant has a modular design and is divided into four units of 60,000 m³/day.
The production capacity in long-term regime is 180,000 m³/day and 240,000 m³/day in peak state. Tailfer is VIVAQUA’s largest catchment site.
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