that we collected the water there on the territory we have two stations. We have the west station where we are currently, and then we have the West station which is at the corner of Har and Charet boulevards. Station West receives water from the collector network which is shown in red here. Then the West station receives the collector in blue. Even though the network in blue is less extensive, it is the one that receives the most bandwidth. OK? For what? Because it is the one that receives the most sector which is in combined or pseudo-separate mode. Next, the paving areas and the catchment areas are much more important. It is much more developed on the eastern network. To the west, there is a little more air capture there, more green areas there that will retain it. So the station is a little bit bigger than the western station. An average of 400,000 m³ is processed per day in the two stations. That's roughly 215,000 in the east. 185,000 to the west. OK. So we process these 400,000 m³ per day. Uh, the two stations are identical. OK, it's the same equipment, only the number is different. The western station is a little bit smaller. Then there are a few other small differences, but I'll mention them to you along the way. But assume that I explain to you that the west station or the west works the same way. OK. First step, we're going to screen the water. We're going to see a reduction in the network in the pumping stations. We start with one degree per station, we're going to reduce that to 50 mm. Then we remove all the debris that is larger than 50 mm. Here, we arrive at the station. We've now reached 19 mm 3/4 inch. OK. So, we have metal bars that are spaced 19 mm apart, which are aligned in channels and then retain all the debris that is bigger than that. Rocks, pieces of wood, ropes, all sorts of objects that could block equipment in the station. So this waste is retained on the grids and then a vehicle will pass at regular intervals, collect this waste and then send it to a conveyor. Then the conveyor will transport them into a compactor. We will reduce the volume of this waste, which takes up as little space as possible. Then we send it in a skip. When the bin is full, we send it to the incinerator. We incinerate this waste along with the other waste from the city. OK. So that's 500 tonnes of grey waste like that which we remove annually from the two stations. 500 tonnes of wet grey waste are removed from there every year. The water is degraded. Then she will hit a wall or she will be forced to go around it. Why did they put a wall there ? This is to prevent all the water from rushing into the central basins. This is to help ensure equal distribution in each of the basins. Next, we adjusted the basin valves to have a roughly equal flow in the five basins that follow. So the water circulates here and is then distributed to the following basins. What are the following basins? the dissimilar. The dissimilar ones. The water enters through the end here. In the first section, we will add air. We're going to add large bubbles to create mixing and prevent short circuits. OK. It could promote soil deposition there. So we're going to stir the water at the beginning of the pool. The water will continue to flow towards the exit, and will overflow into the next section. Along the way, well, fate settles at the bottom. Then the other thing that happens is that on the surface the floating things, the scum, the fat will start to float. Here, we have an overhead crane which makes back and forth trips between the entrance and then the exit of the basin. Then the overhead crane, it is equipped with two rotors, a surface rotor, a bottom rotor. When it makes its movement towards the mountain, the bottom roller will descend, it will scrape the worm towards the fuselage. OK. When it makes its movement towards the valve, it will lower the surface roller and then it will scrape the large particles, the scum, into a gutter that collects the large particles, the scum. So the unscrambler has two actions: remove the sand and then remove the floating debris. The sand is taken from the pit and then pumped to the sand washer which is next to the grills. Here, we have a small unit that pumps the sand into there. The sand falls into a channel that is V-shaped. OK. There, it accumulates at the bottom. Then at the bottom of that canal, there is a pallet conveyor which scrapes the sorting and then calmly exits into a bin towards the exit, it falls into a sardine bin. It's not beach season, you'll see it in a moment, nobody would want to use it on their land for rissage. From below, it is a spell that is contaminated. There's a lot of organic waste in it. Uh, that's really trash. OK. We are forced to send it to the Saint-Desc landfill site. That's 2500 tonnes per year of this kind of thing that we collect at the stations, then take out in the skips, then send to the other action, it's the cubes that we collect in the sluices. We send it into fakes. When these false ones are full, we replace the ecube concentrators. They're fat, they're floating. We're just going to add compressed air to the intake. We're going to fatten them. We're going to thicken them even more on the surface. There, there is a rake that will stir them up and then take them into a pit. There, the large part thickens in the pit, it fills the pit. The operators regularly come by during the day and then empty the water because the water runs down below the grof there on top. The operators empty the water and then return it to the head of the station. Then, the casing filled with fat. The fat is made here and there in the thick, that's exactly what happens. We'll take the sample before you arrive, then watch the separation; the liquid will fall to the bottom. OK, it's a separation, it's a slowed decantation. There are many, many particles coming down, they slow each other down. That's where it's not clean, it's really very cluttered still. Pu ça, ça retour à la tête de station. The broth thickens, then we drain it from the bottom of the layer. That's exactly what's happening beneath their backs. Then the lower portion is pumped to the incinerator. OK. The top returns to the top of the station. Yes. Excuse me. Uh, you don't use any chemical substances, for example, for the decanter, sandblasters, aluminum, or not? No, not at that level. Not yet. All right. OK. Then here, we only use pressurized air in the intake. It's a shedding effect that makes the fats and thicks float to the surface. No chemicals at the moment. So the drum fills with grease and then when it is full we have units we have concentrators we operate one at a time. When the first one is full, we switch the operation to the second one and then let it rest for 24 hours while the solid-liquid separation continues. We're going to drain the water underneath one last time . The wild grass will be returned to the head of the station and then the remaining fat will be pumped into the same place as the waste. The more fat it contains, the more it burns. This is not the kind of waste an insulator would prefer to receive. But he receives it, then he mixes it with the waste, and then it burns. So that's how we get rid of it. That's 800 tonnes of scum like that which we take out of the stations every year and send to the incinerator. That's the pretreatment. What we saw there was the preprocessing. This is the first step. We removed the S, we removed the fat, we removed the large debris that could interfere with the operation of the station. At this level, the station has a treatment capacity of 30,000 m³. Subsequently, after the disassemblers, the station's capacity was reduced to 15,000 m³ (15,600 m³) due to cost considerations. At the time, they said, "What does it represent to not take water beyond 15,600 m³?" Well, it only represents a small volume. It only represents a small period of the year. OK? That's 2% of the total volume of water we receive that exceeds that flow rate. Then it's 6% of the stations' operating time that has surveillance. So, for 2% of the volume and 6% of the operating time, are we going to double the size of the station? At the time, the answer was no. We say from here we will make a derivation. Then when the flow rate exceeds 15600 m³, we will divert some of the water towards the outlet. It will at least have been cleaned, unscrambled, degreased and then it will be removed to the location which is less damaging to the environment of the region. At least it didn't overflow onto the small water towers. Seeing that it will be evacuated after pretreatment means it is less harmful. This is the reasoning, this is the basic principle that has led to the stations we have today. So part of the water that, after pretreatment, is discharged through the other. The remaining water, and then most of the time it is all the water that undergoes the rest of the treatment. The next step is primary settling. We have lamella decanters. The slats here increase the capacity of the settling tanks and then reduce the footprint . This is important because we save approximately a factor of 11 on the footprint of the settling tanks by having lamellar settling tanks. The ground source will explain this, uh, these are process choices that were made to reduce the size of the station in order to be able to cover it and not have the odors. We wanted to cover the air treatment stations. It was when there were public consultations for the construction of the stations, people wanted to give the flower but they didn't want the waves. In their choice of process, they said they would cover the stations. To cover the stations, you need a station that isn't too big. So we make process choices to reduce the dimension. So we have our lamellar dewatering system which removes suspended matter. The water enters through the bottom, rises through the slats and then comes out and overflows towards the outlet. Along the way, the heavier particles will fall to the bottom. There, we have a bottom feeder that will scrape them towards a pit. Those are the primary parts. So the water on its way through will be relieved of 65 to 70% of suspended matter. OK, we remove 70 % of the suspended matter. Again, this is a physical treatment. There is no chemical product but now we have the possibility of transforming it into a physicochemical. Even today, we did some dosing. Coagulants were added upstream of the unbundlers and then polymer was added at the unbundler outlet. This transforms all the primary settling here into physicochemical. The yield is much higher. We're getting a yield of 75 to 80% because at peak flow, the efficiency of the settling tanks, as I told you, is 65% removal, which is average. At peak flow, the efficiency can drop as low as 40%. So the chemicals help us stabilize the station's efficiency and give our filters a chance at the next treatment stage. We have filters here that are not designed to treat solids, so all the solids that we can retain at the primary settling tank give the next stage a chance. So the next step, I burned the pouch, it's done. From the station's departure point, the water flows by gravity from one section to the other. OK? Because the next section is always lower there, we need to raise the water level beforehand to supply the wires. So, our pumping station here is a bit special. These are Archimedes' screws. These are not centrifugal pumps. These are not centrifugal pumps. It's not Archimel screws. These are large worm gears, 3 meters in diameter, that rotate at 20 revolutions per minute. Then the water rushes into the screw and then more of it rises than it falls. The oldest pumping principle. We pump with a screw conveyor 8000 m³. We are able to raise water to a height of 5m to supply the wires. So we have three screws like that . Two screws are sufficient for the entire flow rate of the station in that sector. So the third one is a redundancy for maintenance or even pricing. We have an extra screw. OK for your point, so we raise them with the Archimel screw and then we power the filters. The filters have 30 wires. 30 filters. The type of thread we have here is, uh, it's Biodrop thread from Grément. It's a filter that is never submerged. It's a dripping bed. OK. Water is sprayed in droplets by a distribution system on top and then percolates through a filtering medium. Then underneath, there is a false floor. There, we're going to cross the false floor and head towards the exit. Then above, there is a pump which creates a vacuum to increase the capacity of the film and prevent it from being submerged. So the wire here and there, unless it is completely blocked, is never submerged. There is always air. Air and water are cherished through the medium. So it's an environment that is completely aerobic at all times. We do n't need to install air vents or anything like that. Air is always present in the environment because it is not flooded. OK. What is the filter made of? Dice is the small one, about 2.7 mm in diameter. It's a small gravel, there are 1.6 m of them. OK, 1.6 m thick of biolite. Above the biolite, there is gravel. We have three layers of different sizes of gravel that will retain the violet, then the bottom is concrete, then the concrete floor is riddled with these plastic nozzles that have small holes. So the nozzle, the water rushes into the slot, passes through the false floor, and goes towards the outlet. The gravel retains the dialite so that it doesn't clog the hand. The film is made, it works like that on this medium, on the biolite, it will develop fixed biomass, fixed culture. OK? Then, uh, the biological filter will remove the organic pollution that is dissolved in the water. So all the small, easily decomposable carbon chains that are in the water, that are dissolved in the water, that cannot be removed by decantation, well, the bacteria will feed on that to multiply. So bacteria use carbonate pollution to feed themselves and then multiply. By multiplying, they will clog the thread on the pump that creates the vacuum. When it starts to have difficulty drawing air through the filter, it tells us that the filter is clogged. So , it needs to be washed. We're going to do a backwash. We will use the water from the station's outlet. We're going to pump air through the wire again . We will add air from below the mixing air. We're going to shake things up in the medium. We're going to dislodge the excess bacteria. We will dislodge the suspended matter that had come out of the decanter wires. So here, we generate wash water, then we clean the filter, and after that they go back to filtration. It's a cycle that lasts approximately 60 hours. It is interspersed with small surface cleanings followed by small washes, but a major wash takes approximately 60 hours. And that's how we're going to filter the water. The wash water that is generated goes to decanters. Here the decanters, uh, the others, we operate them all the time in physicochemical mode. OK? We add coagulants, we add polymers, we settle the particles, then the output of these decanters will join the output of the filters. After filtration, the next step is disinfection. Ultraviolet channels, we have 4400 lamps in the east, 3600 lamps in the west. These are channels filled with hundreds of lamps like that, one next to the other. The compliant bacterium that passes through this UV radiation field is rendered sterile by the UV. We make it sterile, that prevents it from reproducing. to eliminate it because uh it is no longer able to reproduce but not in an environment that is very very competitive there arrives made for a stomach 37°g arrives in water at 12 13 degrees not in its element does not last long so after the bacteria when you do not deactivate it so we disinfect the water like that But we do not do this all year round, we do it from June to September. Why only from June to September? Because there are significant operating costs associated with that. Then, uh, the purpose of the disinfection is to improve the quality of the river for recreational activity. So if we want to go kite surfing, if we want to go kayaking, sailing in the river, then disinfection is useful. But apart from June to September, in November there are surfing quests, there are many more in January and even fewer so it's not necessary. There is no major water intake immediately after our station exits that would require year-round disinfection. So our regulatory period for disinfection is from joy to September. So here we've seen the water treatment process. We saw the water treatment. We removed 90% of the suspended matter . We removed 85% of the BOD5, which is organic pollution. We removed 85% of the BOD and then we remove 99.5% of the coliform bacteria in the summer. That's the treatment that's done here. Then it's done in 45 minutes. The drop of water that enters here on average 45 minutes later has come out again . It's very fast. I was talking to you about the choice of how to proceed. to reduce the ground footprint. If we were forced to store the water for 24 hours in the treatment plant, then the plant would be 25 times larger. So the choices of how to proceed are very quick. Biofiltration takes 15 minutes, 10 minutes, 15 minutes. Primary decoction takes 20 minutes. The disassembler takes 5 minutes. Disinfection takes 60 seconds. It takes 45 minutes of treatment to remove 90% of the suspended matter, 85%. There are biological systems that are more efficient than that, but they have longer retention times. OK, so here in 45 minutes, that's still a good job. The small differences between the two stations to the west are that instead of having five sandblasters, there are four. Instead of having one set of curs, there are five. Instead of having 30 threads, there are 22. So the difference here in the east is that the primary ends go into the thickeners. The secondary ends go into the thickeners. To the west, there is no thickener. We take the western sections over 10.8 km, we bring them east into the depths of the western station. So we take the ends of the two stations, the primary and secondary ends of the two stations. It's mud, approximately 1% solids and 98-99% water. OK, we put that into the thickeners and then we're going to thicken it to 5% solids. So the thicknesses are like decanters. We take the water, we bring it to the mud, we bring it to 5% solids. And dehydration doesn't happen here. Dehydration will continue at the incinerator. So we take the 5% sludge and pump it to the incinerators. At the incinerator, they will pass the sludge through belt presses. They take the mud at 5% on the belt press. Then, like a paper machine, it's two canvases. We work the mud in between the canvases and then we apply pressure. The water comes out, passes through the canvas, the mud stays trapped. We pass it through rollers, applying more and more pressure. At the outlet of the braid, the mud is 28% solid. We started with 1% solidity. We've reached 28%. We're going to pump that into the dryers. The dryers are large rotating drums that use the hot vapors from the incinerator to dry the sludge, to heat the sludge. That's why it's the incinerator, it's because we need the heat from the incinerator to dry the ends. Heat is applied, the mixture is heated to 110-115 degrees, then granules are formed . Granules are formed. That's 92 to 95% water. Those little granules, well, they burn very well. That's convenient, we're here and we burn it with the waste. It's 21,000 tonnes of this kind of waste that we produce per year which is incinerated with the city's waste, co-incinerated with the city's waste and which is in the centres are also in the landfill of Saint desc a few years ago, we produced steam at the incinerator which was sold to the paper mill White Birch here and it paid for a part a large part of the operations there of the division but uh there were conflicts of the contract there with everything that happened with the paper mill next door, the closure, the opening that. So currently, we no longer sell white brush paper steamers. Well, the energy recovery we used to do with our bits is no longer there. That energy is wasted. Is there no way to increase its value by selling it to third parties in this condition? No, because there are compounds in there that are problematic for spreading, things like that. Because the fumes from the incinerator are not purified fumes, they are hot fumes directly from the ovens and they contain PAHs, they contain things like that which contaminate the taste. So we couldn't use those pieces directly. But there is a biometallization project because from 2020 onwards, it will be forbidden to bury municipal waste in landfill sites. So from 2020 onwards, municipalities will be racing to produce compost and biomethanization to have their share. The city of Quebec has chosen to build a biomethanizer here, which will be on the other side of the street. He will take the ends of the station of stations. Then he will take the table scraps, the specific waste, and then he will make methane from these compounds. OK. Uh, the digesta, it will be used there for spreading, like fertilizer, in the fields. So, with agronomists, they will place this digestate in the fields. Uh, this is directly related to agricultural development. Uh, the methane will be purified and then sold to Gaz Métro. This is what will happen in the coming years. For now, it's going to the incinerator. That pretty much covers everything, if you will. I have a beautiful place where one of my colleagues is taking care of it. Yes. I have a question regarding where you said there was a separate network; the water at the bottom of the roads is in the rivers. Is there any treatment or is there still waste in the roads? Well, it's evolving. OK. The regulations regarding this are also evolving. The systems have different procedures to minimize the impact of these waters on the receiving streams. They have BFEs to retain the floating-point numbers. They have, uh, baffle systems to reduce velocity to avoid creating as little erosion as possible to the point of rejection. Some systems have systems for restraining solids, but this varies from place to place. That's valid, but in winter, depending on the region, it's still going to have a pretty significant impact on the watercourses, that's for sure. Salt has an impact; the salt that comes in here, it comes out at the outlet. There's no salt treatment here. But is salt really that bad environmentally speaking? When you look at the 2500 tons that come in here, breaking pumps, creating blockages, causing overflows in the network, taking up space in the drainage system... Is sand really that bad environmentally? But it just doesn't help as much as possible. I just want to highlight that a bit. It's not... it's not a problem either. We use de-icing agents, that's right, for rainwater. Sure, maybe there's still work to be done, there's work being done, but it's another department, it's not us who... will take care of that. city programs to detect because there are still cross connections, it's listening in, that's a big problem, bad connections, it's certain that the other network, more each time that a flat of oil or a bag of chips, it sends important things, so when we talk about separate networks, I might prefer to see it here at the station to see directly. So it's never a clear solution. It's evolving, you know. to the snow that we collected from the streets with the salt and then we put it directly into the river to these are Canadian parks that try to retain as much as possible of it is always evolving even our field is also evolving we have standards that see things that evolve at the statistical level so well he takes care of the network he I take care of the stations he takes care of all the overflow points of the pumping stations on the network there he is the one who monitors that and Anne Lajoie who is a process engineer there at the division here. So my two colleagues are going to help me with the tour for the station. Uh, we're going to split the group into roughly three . There are 39 of you, I think roughly 13 per guide. Those who need to use the restroom beforehand can go. It's okay, we always take the encouragement. So if you want to contribute, no, if you want to go to the toilet before going on the tour, the ladies' toilet is this side, the men's toilet is this side. After that, I'm going to ask you to take your hat and glasses and then we're going to go to the station. Love how much. So hard to.
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鲲侯·星河易道每周运势预测，北斗七星抽卡，奇门遁甲预测（2026-10-5至2026-10-11）
鲲侯·星河易道每周运势预测，北斗七星抽卡，奇门遁甲预测（2026 10 12至2026 10 18）
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