Half a century ago, China was backward, but beautiful. At that time, Europe was very developed, but the pollution was very serious, and many rivers and lakes smelled bad. Today, China has sprung up and developed rapidly, but it has also brought serious pollution to rivers and lakes. It seems that no country can get rid of this law of development. Fortunately, after half a century of suffering, Europe has learned a lesson and invested a lot of manpower and material resources. Although it is far from fundamentally solving all the pollution of rivers and lakes, it has basically achieved impressive results. Most rivers and lakes have been paid off, or basically paid off, and some have started or are preparing various huge projects to pay off. Our party and government attach great importance to environmental engineering and have invested a lot of manpower and material resources in harnessing rivers and lakes. In 20 years, not half a century, China will basically eliminate pollution and achieve ecological balance. At that time, the national strength will be stronger than ever, the mountains will be clearer and the water will be more beautiful.
In fact, the pollution control of rivers and lakes in China began as early as half a century ago. For example, the Haihe River in Tianjin implemented the project of "separating salt from water and turbidity from turbidity", which made the black and smelly Haihe River caused by colonial powers clear in the second year. It can be seen that the primary key to the treatment of rivers and lakes is to "remove turbidity and enter the water", intercept all the sewage entering the river and make it flow to the sewage treatment plant for treatment, and then introduce fresh water from the upstream or rely on atmospheric precipitation to replenish the river, so as to restore the river and achieve ecological balance. This is also the practice of other countries such as Europe.
However, China has a large population and is seriously short of water, so there is no water to draw from it. Under such severe conditions, how to keep rivers and lakes clear and beautiful all the time is not a lesson for the whole world. The historical burden falls on the shoulders of contemporary China water treatment experts.
We have managed almost all natural and artificial water systems in Shenzhen OCT, such as American Lake, Australian Lake, splendid china Cuihu Lake, Happy Valley Lake and various water systems, Portofino Yanqi Lake, OCT Ecological Square River and Lake, and nine water systems in Beijing, including Changpu River, Wanquan River and Yuquan Mountain. Using the principle of bionics, we have pioneered the management of landscape rivers and lakes in the world and achieved great success. In view of the fact that the treatment of landscape water by bacteria is still in the research stage in the world, the problems in the implementation process are difficult to solve and not as easy as people think, so there is no successful precedent for any country to treat any large rivers and lakes. We gave up the idea of treating sewage to treat the landscape water of rivers and lakes. Especially last year, the SARS virus spread around the world, which sounded the alarm for mankind. It is dangerous to treat landscape rivers and lakes with bacteria, because the variation of bacteria and viruses is unpredictable and unstoppable. In addition, the strains are all cultivated in the greenhouse, which is very delicate, and they die quickly in nature, and their survival period is too short. It is not easy to spread the coagulant into natural rivers and lakes evenly, so it is better to spread the coagulant into rivers and lakes quickly, thoroughly and cheaply.
As we all know, the water on the earth is actually limited. In the billions of years since the formation of the biological chain, every drop of water has entered the biological cycle many times. But after human industrial pollution, it has formed an irreversible reaction. The pollution of nature itself to its water body can be self-repaired. The history of the earth and the biological development on the earth for hundreds of millions of years tell people that as long as it is not polluted by chemicals, the water system relying on the earth itself will repair itself. Natural water itself has a self-purification process, which is what we usually call it. What is water self-purification? It is necessary to explain this problem clearly.
About the self-purification of river water. Let me start with a practical example. Guanting Reservoir in Beijing, because the water in the upper reaches of Sanggan River and He Sui River contains a lot of organic matter, the total nitrogen and total phosphorus seriously exceed the standard, so that the water in Guanting Reservoir is seriously polluted and becomes five types of water bodies that cannot be used. The water quality of the reservoir water discharged from the sluice is worse than that of the fifth class water, but after a journey of 83km, when it flows to Sanjiadian Reservoir, the water quality is greatly improved, and it is obviously improved to the third class water. What is the principle of self-purification of water quality?
1, the role of breathing-aeration: waterfall, falling water, turbulence, whirlpool, rapids, so that some gases volatilize, some gases dissolve in water, and the most effective thing is to dissolve in oxygen, so that oxidizable organic and inorganic substances are oxidized and water is activated. No deterioration, dissolved oxygen makes water fresh.
2. Precipitation and filtration-advection and undercurrent. Water flows in the river, which is sometimes narrow and sometimes wide, and the flow rate is very slow in the wide place, which often plays the role of precipitation. Sometimes it seeps into the ground (such as the sand layer of the river bed), passes through an undercurrent, and when it flows out again, it intercepts the impurities in the water and continuously improves the water quality.
3. Biochemical action-participated in the water purification process in the life process of aquatic animals, plants and bacteria. This is the objective "immunity" ability of river water.
Regarding the self-purification of lake water, firstly, the self-purification of lakes with inflow and outflow rivers is the same as that of rivers. Second, rivers do not flow in and out, but there is an underground undercurrent. This kind of lake water and underground diving are constantly exchanged, and the water quality will naturally not deteriorate. 3. Lakes with no rivers flowing in and out and no groundwater exchange, such as the bottom of clay lakes and the bottom of various artificial impervious layers, are dead lakes. The lake itself has no self-purification ability, so it is extremely difficult to artificially create ecological conditions. People can't stop the propagation of spoilage bacteria and keep the water fully dissolved, which is why there is nothing the world can do about the stagnant lake. The ecological method of artificial culture of large-scale dead lake water can not be solved by people's superficial and one-sided understanding, and the ecology of nature is not transferred by people's will. It is impossible to expect the true natural ecology of the Dead Lake to be fully formed. All living things on the earth are repeating and imitating the laws of the earth. All living things cannot live without water. Water is the source of all life (animals, plants, bacteria, spores, viruses). How do they keep the water quality of this tiny world in the body from deteriorating? It still simulates the three elements of the earth's water quality. First, breathe, expel harmful gases, inhale oxygen, and go to the old to welcome the new. Animals breathe by lungs, while plants, bacteria and viruses breathe by stomata, without exception. Second, eliminate harmful components and dregs in the water. Animals are filtered by kidneys and intestines, plants are filtered by semi-permeable membranes, and microorganisms are also filtered by semi-permeable membranes. Third, biochemical effects. The biochemical function of an organism is its immunity. Our world is actually a world full of bacteria, germs and viruses. Once any living body loses its immunity, life is over.
We must also follow this law in the water treatment of rivers and lakes. At present, the three practices in the world are subjective and one-sided, which do not conform to the natural laws of the earth and naturally will not be very successful. At present, there are four international practices: one is aeration; Second, the filtration method; Third, the bacterial method; Fourth, biological laws. Combine them organically, and then fundamentally change them, and they become simulated lung breathing, simulated kidney excretion and simulated immune function, or new devices, filters and disinfectors. Treating rivers and lakes with such links will make them always clear, always fresh, always activated and never deteriorated. Under the guidance of this concept, after decades of efforts, we have successfully designed and manufactured a hydraulic automatic plastic water treatment system, which is the three elements we understand: simulated lung, simulated kidney and simulated immunity, so as to ensure that rivers and lakes can always renew themselves, be clear and have nearly saturated dissolved oxygen, fundamentally inhibit the growth and reproduction of bacteria and viruses, and make rivers and lakes always beautiful, thus obtaining international invention patents.
I. Functions and functions of hydraulic automatic plastic water treatment system
1, respiratory function
The key to the self-purification of water in nature lies in the respiration of water in the process of flowing. "Running water does not rot" is not because of exercise, but because of the respiratory function during exercise. Jet stream, vortex, spray, falling water, waterfall, lapping and turbulence will all cause gas-water mixing, water will evaporate into the air, water molecules will escape, and dissolved substances with gas prefixes such as nitrogen, ammonia nitrogen, carbon dioxide, hydrogen sulfide and methane may escape. At the same time, a large amount of oxygen is dissolved in water, which makes the water fresh and active. There is no doubt about the respiratory effect caused by water flow. Everything on the earth replicates the laws of the earth. All living things are breathing, there is no life without breathing, because there is no life without water. The function of breathing is to remove waste gas and inhale oxygen, so that the blood and juice of living things can be purified, refreshed and activated.
The very important concept of "breathing" function should be introduced into the water supply field. After decades of development and evolution, the hydraulic automatic plastic water treatment system has developed from practice to theory and from theory to practice to 15 generation. More and more attention is paid to the respiratory function, harmful gases are effectively volatilized, and dissolved oxygen reaches saturated concentration, which is beneficial to the continuous oxidation reaction of impurities in water, so that water enters a virtuous circle and is purified, fresh and activated better and better.
2, foam defoaming-flotation function
Breathing gets rid of the old and absorbs the new, but it produces the accumulation of bubbles. What is a bubble? Foam is an organic substance such as oil, fat, protein, enzyme, ammonia nitrogen, organophosphorus, anionic synthetic agent, washing powder, soap bubbles, benzene, phenol, naphthalene, etc. These substances float on the water surface after foaming, and accumulate more and more, and finally escape from the flotation device and are discharged into the sewer. River, lake and landscape water treatment is infinite circulating water treatment. All water bodies should be treated repeatedly and aerated and foamed repeatedly. The floating foam always overflows and is discharged by the flotation device, and the organic matter is continuously removed until it is reduced to no foam. This process makes all kinds of foamed organic matter in water be completely removed.
Second, the fine filtering function
According to the principle of seepage well, the water flows from top to bottom by gravity. The first layer has a particle size of D 1 = 0.8 ~ 1.6 mm, a specific gravity of r 1=2.4 and a thickness of h1= 300 mm; The particle size of the second layer is D2 = 0.4 ~ 0.8, the specific gravity r2=3.2, and the thickness H2 = 200; The particle size D3 of the third layer is 0.2-0.4, the specific gravity R3 is 4.2, and the thickness H3 is 70 mm; Fourth floor. The first layer intercepts 97% particle weight and 3% particle number, the second layer intercepts 97% particle weight and 3% particle number, and so on. The thickness of the first layer of filter material is the largest, and the thickness decreases step by step. Each layer is allowed to penetrate 3% by weight, and each layer is not blocked and has gaps. There is still a gap in the last layer, but at this time, the turbidity is less than 0.4 degrees, so there is no need to increase the number of filtration layers.
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