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| Ten minutes to show you the treatment process of the water purification plant. | ||||
| publisher:admin | Add time：2018/5/2 | viewed：602 | ||
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Water is the source of life, and water accounts for 70% of human body composition. Scientific research shows that the average daily water requirement of adults is more than 2500ml, which can be said that water quality is the basic guarantee for physical health. Turned the tap, tap water slowly outflow, we while enjoy the convenience of modern life, have you ever thought of these increases with the increasing open with what exactly process only after the tap water in the rivers and lakes into homes, sometimes the flow of water is as white as milk, and there are a lot of bubbles, emit the smell of disinfectant, want to rest for a few minutes to restore clear, exactly how these phenomena, as consumers we how to discern the stand or fall of water quality. Rural friends may know, had no running water, the home has a large water tanks, father leans over and pole ZhiYaYa, carrying out of the pond water home, pour into the tank after playing on alum precipitation static began a period of time the bottom of the cylinder, this is the most primitive rural water treatment technology. Later, it was found that the water tank was concentrated together, and the special person unified the alum, and the efficiency was higher, so the larger the water tank became the water plant, and the more efficient medicine gradually replaced the alum. At present, most water plants adopt the method to disinfect, precipitate and filter water from water source, and finally pump it to the user's home, which mainly USES the following 6 drugs: 1.HCLO hypochloric acid, which is added to water by chlorine gas in the chlorine bank, has a strong disinfection ability, and can be divided into prechlorination and post-chlorination according to the different positions. 2. PAC polyaluminium chloride, solution stored in dosing, pumping to mixed fully mixing with water pool, role is to make the tiny suspended particles in water and colloidal ion stability, aggregation, flocculation, coagulation, precipitation, achieve purification treatment effect. 3.O3 ozone, produced by O2 oxygen discharge, strong oxidant, is used to disinfect and disinfect the algal cells and reduce their content. The position can be divided into pre-(former) ozone and post-ozone drop. The advantages of using ozone in water treatment are many, such as good sterilization effect, poor stability is easy to decompose, there is no toxic residue, but a lot of use brings problems, such as corrosion of metal pipelines, more important is to produce a certain amount of bromate, you know, this is a potential carcinogen, waterworks coping approach is to use a certain amount of H2O2, mentioned below. 4. H2O2 hydrogen peroxide, strong oxidizer, have the ability of sterilization, but is mainly used to deal with bromate, add water and O3 formed after competition, avoid bromate formation, often used in water quality is poorer in add. Bromate as potential carcinogens, but heat decomposition, is not only the tap water, most bottled water is on the market, from the doses toxic meaningless talk, for peace of mind, the most health cold boiled water. 5.KMnO4 potassium permanganate, which is oxidized organic matter, disinfection and sterilization, adding water will become red, and the dosage should be strictly controlled. 6.PAM polyacrylamide, flocculant, is only used in the balance tank of the sludge system, because it is expensive. Now there are three questions to know about some chemicals in the process of water treatment. 1. Where does water come from? What does the water do here? Where does the water go? Please fasten your seat belt. 1. Water - water pump room - water treatment works, in a word, high lift, high power pump to serve, to meet the requirements of national standard water only can, when choosing pump consider part of the head loss, according to user's demand for controlling water good play. Before 2. Potassium permanganate pre ozone - chlorine, potassium permanganate and chlorine dosing method is put in the main path of the inlet pipe opening set shots, the drug directly mixed with water pump to the pipeline, ozone has a separate structure, cell body internal destruction and additive mix will exhaust gas recycling. 3. Mechanical stirring mixing pool, with PAC polyaluminum chloride and mixing machine. 4. Flocculation advection sedimentation tank, folding plate, the rotary plate type, tiny suspended particles in water and colloidal ions on the flocculation precipitation, special structure will increase the flow length, increase the contact area and time, increase the collision probability, so as to improve the effect of precipitation polymerization, supernatant will sink into the filter by set. So a friend asked, this is always flocculating sink is not very easy dirty, do you regularly wash the pool? At this point, they realized the wisdom of this group of water workers. They invented the mud scraper, the mobile black technology, and deposited in the mud at the bottom of the pool. 5. The filter tank (2 seats, V type 1), after the flocculation and precipitated water enters the filter tank, the filter material is quartz sand, which can filter the suspended solids in the water. 6. Improve pump room, ordinary water can lower after sand filter processing, can't touch by gravity flow into the ozone and activated carbon filter, in this needed a lift pump to obtain larger potential energy, in order to complete the follow-up process. 7. Ozone contact pool, after lifting the water into the ozone contact pool, adding ozone sterilization, this stage is after ozone. 8. Activated carbon filter, from top to bottom is 2.2 m thick activated carbon + quartz sand + 0.2 m 0.5 m thick thick layer retainer, activated carbon filter material can improve water quality, larger limit filter water concession gallery after the central canal bus redistribution to clear water reserviors. 9. Clear water reserviors - absorbing well - secondary pump room, water flow into the suction well clear water reserviors, secondary pump water pump on standby, press start, clean and hygienic passed municipal tap water feed pipe conveying to the families. But that's not all. Do you want to ask: In the case of long-term filtration, whether it is quartz sand or activated carbon, it is bound to become dirty. How to clean the suspended solids in the filter? Where did the mud from the mud scraper go? Let's start with two concepts: 1. Backflush system 2. Sludge disposal system. The first one is that the filtered water flows from the top down in space, and the backwash system is from the bottom up. Water system of water from the clear water reserviors, why with water, feel good to waste, this is because if you use the dirty water brush a bowl, brush is not clean and even appearance clean you also dare not directly bring more rice. Air rushed by air compressor is to compress the air blown into the bottom of the filter material, the process of bubble rising in water drive filter material rolling up and down, and then will be cleared out impurities, backwash water into the recycling pool, water quality testing standards to access water inlet pipe, the Lord walked again the above process, therefore, recycling pool can also, of course, an emergency switch valve into the rain water system. As for the sludge disposal system, as the name implies, the sludge water produced by the water plant. Mainly tank mud scraper, mud scraper discharge of sludge water into the drain mud pool, pump to match well, allocated by the match well to concentrated tank, sludge water precipitation in the concentrated tank, the upper part of hydraulic low water will discharge to the rainwater system, bottom mud silt content is too big, confluence to balance the pool, and then pumped into to the centrifuge for dehydration room and mud separation, water discharge system by rain and mud cake heap heap tent in sludge regular cleaning. Water treatment works, recoil system, sludge production system is simple to understand here, waterworks operation is the difficult point in the case of raw water quality changing continuous output meets the requirements of water purification, is a kind of dynamic management, season, temperature, microorganisms and other external conditions change, composition of raw water also changes, such as the summer coming, algae outbreak, microbial content, to join the chlorine content of the corresponding to increase, but increases to what extent can ensure can have the effect of sterilization, without residual chlorine is too high, which not only by the theoretical calculation, more numerous water workers with many years of experience accumulated, Here I salute all water workers for your efforts to the benefit of society. Illustration of the strange mushroom shape building met many friends, this is a sign of waterworks, the progress of science and technology make it gradually withdrew from the historical stage, until disappear, backwash process is to pump before sent to the top of the water tower, high potential energy, using gravity back flush after opened, the process is now directly in backwash pump, no longer after the water tower. Finally, let's go back to the opening questions: Found 1. Open the tap water, like milk, this is because water maintenance, when mixed with air in the pipe to water again when the hydraulic pressure into the water, the general air out because the light refraction he looked from the faucet into ivory, let stand for 2 minutes, without any effect. 2. 84 disinfectant water taste, this is the taste of HCLO, in order to ensure the water in the municipal pipeline continued from bacterial contamination, generally before sent to the user home still chlorine, water more chlorine (chlorine), also need not worry, these are the index of water quality monitoring data, the dose will be strictly controlled, and let stand for 2 minutes have no taste. 3. The water is water, can't be nutrition, also can't count on the trace elements, iron deficiency is multi-purpose wok cooking, on the market what mineral water and alkaline water stunt is greater than the practical significance, is not necessarily better than cold boiled water. 4. Normal tap water is colorless, transparent, if the water is red, let stand after precipitation obviously, big probability because rust or damage after mixed with silt, pipeline years should reflect to the tap water company in a timely manner. |
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