In the process of high-density intensification, when the temperature difference in the summer high temperature season or early autumn is large, the turbidity of the pool water often occurs, and the turbidity of the landscape water quality will affect the fish feeding. The organic matter suspended in the water will consume a large amount of dissolved oxygen in the pool, resulting in an anoxic floating head of the fish. Due to the lack of oxygen in the landscape lake for a long time, it will lead to the growth of pathogens. After the turbid landscape lake is undergoing water exchange treatment, the situation is not improved. The reasons for the water turbidity caused by careful observation are:
First, the water body is eutrophic, causing the blue-green algae to multiply. As the climate changes, a large number of algae die, causing water changes. The residue of dead algae releases a lot of harmful substances to destroy the water quality, so that the density of the water body becomes larger, and the material with a small density in the bottom material floats up and is suspended in the water, so that water turbidity occurs.
2. When there is a worm in a farm animal, if the fish body feels uncomfortable, it will smash in the pond and stir the sediment, causing the water body to be turbid. In addition, the water quality is not good, the water density is large, and the turbidity is difficult to settle.
Third, long-term heavy rain, resulting in turbid water quality, increased oxygen consumption of organic matter.
Prevention of water turbidity:
Take precautionary measures against the causes, mainly to prevent eutrophication of water bodies. Improving the water quality of the landscape lake, reducing the organic oxygen consumption, supplementing the carbon source to balance the algae phase, and maintaining the water quality stability is the basis for solving the water turbidity.
Treatment method after water turbidity occurs:
1. Breathing dissolved oxygen - increase the dissolved oxygen, freshening and activation of the water body to simulate the waterfall flow pattern in nature, increase the total oxygen content according to the oxygen transfer principle, reduce the liquid film thickness during the water flow, and accelerate the renewal and increase of the gas and liquid interface. Atmospheric and liquid contact areas. That is to say, sufficient water flow subdivision, increase the contact area between the water flow and the air, and fully aerate in the air, so that the water is rich in dissolved oxygen, and harmful gases such as ammonia gas and carbon dioxide in the water overflow from the surface. Because redox is an important role in water purification, molten oxygen in water can react chemically with pollutants, thereby removing harmful substances from the water. According to the water quality test, the dissolved oxygen in the water remains saturated after treatment, so that the water is always fresh and activated. 2. Hydraulic flotation - removal of organic and inorganic substances in the water body through the function of breathing (ie aeration), resulting in a large number of water bodies foam. The reason for the foam is that the soap and protein substances in the water act as a foaming agent, that is, nitrogen, phosphorus, oil, protein, chlorophyll and anionic synthetic agents. When the raw water mixed with foam flows to the filter layer, since the foam is lighter than water, it floats above the water surface, and the internal pressure of the landscape lake water treatment equipment is extremely small, and the filter layer adopts a natural anti-composite filter material with a small particle size and a relatively large particle size. The foam cannot pass through the underlying filter layer and can only float on the surface. When the foam accumulates more, it can only be discharged through the "exhalation pipe", or when the canister is backwashed, the foam is washed away with the water flow, and the process makes the various organic and inorganic substances fired in the water more thoroughly removed.
3. Gravity micro-pressure fine filtration—high-efficiency interception of suspended solid particles through the multi-layer anti-composite natural filter material to trap the “free†and “floating†solid particles in the fine filter layer designed by the principle of the well. The particle size of the filter layer is consistent with the dispersed particles in the raw water. Due to the characteristics of this layered filtration, even the removal rate of bacteria can be more than 90%. It is well known that the particle size of E. coli is 0.5 u. In other words, the composite filter layer can remove all particles of 0.5 u or more and can effectively remove algae of 0.5 u or more.
4. Chlorine pulse pulse disinfection - killing residual bacteria in water and improving the body's own immunity The so-called water immune function is that the water must contain a trace amount of long-acting bactericidal factor 0.30.5mg / L of residual chlorine. It can effectively curb the growth of pathogens and viruses in water, and control the reproduction of algae and algae spores. The long-acting bactericidal factor is called the immunity of water. It is the fundamental guarantee for the deterioration of the water quality of the landscape lake.
5. Automatic excretion function—The intercepted impurity surface is intercepted by the impurity raw water through the filter layer. The impurities in the water are intercepted, and the resistance of the filter layer increases, causing the water level to rise. When the water level rises to a certain height, it is automatically drained and automatically flushed according to the fluid mechanics principle. Automatic recovery filter, the filter material is arranged and reset by itself. Flushing strength 32L/m2.s, flushing for 2min, water quality after filtration (turbidity), <0.14mg/L
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