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Micro flotation dissolved air flotation wastewater treatment plant
Micro flotation dissolved air flotation wastewater treatment plant
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Micro flotation dissolved air flotation wastewater treatment machine is a newly developed high-tech wastewater treatment equipment, which uses a new rectification method
Shi greatly improves the effectiveness of sewage treatment.
Product Features
·The machine is equipped with an efficient gas dissolution system, and the average diameter of microbubbles is below 1 μ m, which is at least 20 times smaller than the current level of 20-50ml at home and abroad. That is, when the dissolved gas volume is equal, the total surface area of microbubbles increases by at least 400 times. In fact, due to the significant increase in gas solubility, the total surface area or bubble density of microbubbles has increased by thousands of times. Research by foreign scholars has shown that when the diameter of microbubbles is smaller than a fixed value, according to statistical mechanics, the impact force of thermal motion of surrounding water molecules will be unbalanced, and the bubbles will participate in partial Brownian motion, which is extremely conducive to the diffusion of oxygen molecules inside the bubbles into the sewage. Therefore, the aeration effect will be much higher than thousands of times.
·The machine adopts a special stainless steel mechanism to achieve rectification and flow stabilization effects, as well as a special high-efficiency release system to eliminate the energy of dissolved gas and water, which means that the dissolved gas is reduced from a high energy value of deep equilibrium to a low energy value almost close to atmospheric pressure.
·The device has a compact structure, miniaturization, and small footprint: for example, the device for processing 1000-4000m3 of white water per day can be installed inside the workshop with a height of only 5.5 meters and an area of 10 square meters.
·This machine consumes less power and can reduce it by more than 50% compared to ordinary air flotation.
·Low drug consumption, which can be reduced by more than 50% compared to ordinary air flotation method.
·Excluding high concentrations of floating slag, reaching over 4%, the effluent is clear and transparent, with a SS removal rate of over 96%, and insoluble COD can be completely removed.
Process principle:
1. High utilization efficiency of dissolved gas
The efficiency of air flotation treatment of sewage depends on the quality of small bubbles that can be lifted by dissolved air in a unit volume, which is an objective indicator for judging the efficiency of dissolved air flotation work. Air is a substance that is difficult to dissolve in water. Under normal pressure, the solubility of air in water is 1.8%. At a pressure of 0.3 MPa (about three atmospheres), the solubility of air in water can reach 5.4%. The key to the efficiency of air flotation is to allow the limited dissolved gases in water to have a greater effect when released. We can improve efficiency in three aspects.
a、 Reduce the diameter of bubbles
b、 Increase the density of bubble clusters
c、 Uniformity of bubble clusters
The three are interrelated and mutually restrictive. Under limited dissolved air conditions, reducing the diameter of bubbles can increase the density of the bubble group, and increasing the density of the bubble group can increase the uniformity of the bubble group. In traditional air flotation methods, the diameter of bubbles is generally above 20 microns, and the density of bubble clusters is relatively small. However, the proportion of ineffective bubbles larger than 100 microns is high. These ineffective bubbles rise quickly due to their large diameter, causing the flocs to be impacted and ruptured, resulting in unsatisfactory flotation results. The diameter of the dissolved gas released by the micro flotation water purifier is less than 10 microns, with high density, uniform distribution, and low energy consumption.
2. High suspended solids processing load
The micro flotation water purifier can treat wastewater with suspended solids SS content up to 5000-20000mgL. This indicator cannot be achieved by any traditional air flotation method. The SS content that can be separated by traditional air flotation is generally around 1000mg/L, and it only has certain practical value for wastewater with SS content of several hundred mg/L. Simple and practical pressure dissolved gas
The design of the dissolved gas tank in this machine adopts a design scheme different from traditional theory, which negates the design method mainly based on hydraulic retention time and achieves a large capacity volume and processing capacity. To increase the contact area between air and water, a four stage premixing mechanism is adopted, and the gas and water can reach a homogeneous state in a very short time.
3. Efficient bubble generator
Traditional air flotation, due to the defects and limitations of its release device, also has a fatal impact on the suspension effect. For example, vortex concave air flotation uses a high-speed rotating impeller to break up the inhaled air and generate bubbles, regardless of whether the high-speed rotating impeller will also stir up the flocs and destroy the suspended matter. This method of generating bubbles alone determines that this structure cannot produce microbubbles below 10 microns. Therefore, the first thing to overcome is the defect in the structure and process of the bubble generator. With its reasonable design, this machine has achieved the conversion of air from air-water to microbubbles.
Application scope:
This machine can be widely used for solid-liquid separation and wastewater treatment in the production processes of various industries such as paper industry, food industry, fiber product industry, wood processing industry, and chemical industry. For example, in the paper industry, it is possible to effectively recycle white water, purify the circulating water of waste paper de ink engineering, replace sewage treatment with sedimentation tanks, and separate activated sludge.
Micro flotation dissolved air flotation wastewater treatment machine is a newly developed high-tech wastewater treatment equipment, which uses a new rectification method
Shi greatly improves the effectiveness of sewage treatment.
Product Features
·The machine is equipped with an efficient gas dissolution system, and the average diameter of microbubbles is below 1 μ m, which is at least 20 times smaller than the current level of 20-50ml at home and abroad. That is, when the dissolved gas volume is equal, the total surface area of microbubbles increases by at least 400 times. In fact, due to the significant increase in gas solubility, the total surface area or bubble density of microbubbles has increased by thousands of times. Research by foreign scholars has shown that when the diameter of microbubbles is smaller than a fixed value, according to statistical mechanics, the impact force of thermal motion of surrounding water molecules will be unbalanced, and the bubbles will participate in partial Brownian motion, which is extremely conducive to the diffusion of oxygen molecules inside the bubbles into the sewage. Therefore, the aeration effect will be much higher than thousands of times.
·The machine adopts a special stainless steel mechanism to achieve rectification and flow stabilization effects, as well as a special high-efficiency release system to eliminate the energy of dissolved gas and water, which means that the dissolved gas is reduced from a high energy value of deep equilibrium to a low energy value almost close to atmospheric pressure.
·The device has a compact structure, miniaturization, and small footprint: for example, the device for processing 1000-4000m3 of white water per day can be installed inside the workshop with a height of only 5.5 meters and an area of 10 square meters.
·This machine consumes less power and can reduce it by more than 50% compared to ordinary air flotation.
·Low drug consumption, which can be reduced by more than 50% compared to ordinary air flotation method.
·Excluding high concentrations of floating slag, reaching over 4%, the effluent is clear and transparent, with a SS removal rate of over 96%, and insoluble COD can be completely removed.
Process principle:
1. High utilization efficiency of dissolved gas
The efficiency of air flotation treatment of sewage depends on the quality of small bubbles that can be lifted by dissolved air in a unit volume, which is an objective indicator for judging the efficiency of dissolved air flotation work. Air is a substance that is difficult to dissolve in water. Under normal pressure, the solubility of air in water is 1.8%. At a pressure of 0.3 MPa (about three atmospheres), the solubility of air in water can reach 5.4%. The key to the efficiency of air flotation is to allow the limited dissolved gases in water to have a greater effect when released. We can improve efficiency in three aspects.
a、 Reduce the diameter of bubbles
b、 Increase the density of bubble clusters
c、 Uniformity of bubble clusters
The three are interrelated and mutually restrictive. Under limited dissolved air conditions, reducing the diameter of bubbles can increase the density of the bubble group, and increasing the density of the bubble group can increase the uniformity of the bubble group. In traditional air flotation methods, the diameter of bubbles is generally above 20 microns, and the density of bubble clusters is relatively small. However, the proportion of ineffective bubbles larger than 100 microns is high. These ineffective bubbles rise quickly due to their large diameter, causing the flocs to be impacted and ruptured, resulting in unsatisfactory flotation results. The diameter of the dissolved gas released by the micro flotation water purifier is less than 10 microns, with high density, uniform distribution, and low energy consumption.
2. High suspended solids processing load
The micro flotation water purifier can treat wastewater with suspended solids SS content up to 5000-20000mgL. This indicator cannot be achieved by any traditional air flotation method. The SS content that can be separated by traditional air flotation is generally around 1000mg/L, and it only has certain practical value for wastewater with SS content of several hundred mg/L. Simple and practical pressure dissolved gas
The design of the dissolved gas tank in this machine adopts a design scheme different from traditional theory, which negates the design method mainly based on hydraulic retention time and achieves a large capacity volume and processing capacity. To increase the contact area between air and water, a four stage premixing mechanism is adopted, and the gas and water can reach a homogeneous state in a very short time.
3. Efficient bubble generator
Traditional air flotation, due to the defects and limitations of its release device, also has a fatal impact on the suspension effect. For example, vortex concave air flotation uses a high-speed rotating impeller to break up the inhaled air and generate bubbles, regardless of whether the high-speed rotating impeller will also stir up the flocs and destroy the suspended matter. This method of generating bubbles alone determines that this structure cannot produce microbubbles below 10 microns. Therefore, the first thing to overcome is the defect in the structure and process of the bubble generator. With its reasonable design, this machine has achieved the conversion of air from air-water to microbubbles.
Application scope:
This machine can be widely used for solid-liquid separation and wastewater treatment in the production processes of various industries such as paper industry, food industry, fiber product industry, wood processing industry, and chemical industry. For example, in the paper industry, it is possible to effectively recycle white water, purify the circulating water of waste paper de ink engineering, replace sewage treatment with sedimentation tanks, and separate activated sludge.
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