Function of thickener in mining enterprises

1. The function of the air flotation tank is to float up and concentrate. A concentrated sludge layer is formed on the surface of the tank and scraped out of the tank by a mud scraper

the particles that cannot float up sink to the bottom of the tank and are discharged together with the clear liquid drainage pipe at the bottom of the tank; Part of the clear liquid is refluxed and pressurized, and compressed air is pressed into the air dissolving tank to dissolve a large amount of air in water.

2. Thickening tank generally refers to the sludge thickening tank by gravity or dosing agent

2 the thick pool should be a slip of the pen in translation. Although I have studied environmental engineering for more than ten years, I haven't heard of it. You can send me the information you see, and I'll help you see it

after checking, this thickener is the structure of concentrator to concentrate slurry. As you can see in the sewage treatment plant, it should also be used for thickening sludge, but I haven't seen it in the general sewage treatment plant. The suggestions are for reference only

3.

The sedimentation tank adopts the principle of gravity separation. Under the action of gravity, the density of part of the feces is greater than 1 × 103 kg / m3 (density of water) of suspended solids is separated from the feces by natural sedimentation

According to the flow direction of sewage in the tank, the sedimentation tank can be divided into horizontal flow type, vertical flow type, radial flow type and other basic forms. The structure of horizontal flow sedimentation tank is simple and the construction is convenient, but it covers a large area and the water distribution is uneven; The structure of vertical flow sedimentation tank is round, which occupies a small area, and it is inconvenient to discharge sludge; The radial flow sedimentation tank has a set type of sludge discharge machinery, which has good operation effect, but it requires higher construction quality and management level

generally, the retention time of feces in gravity sedimentation tank is 1-3 hours, and more than 50% of solids can be removed. The investment and operation cost of sedimentation tank are low, but the water content of solid separated from sedimentation tank is high

4. The function of thickener in beneficiation process includes: desliming, pulp classification and proct concentration.

5. Thickener and thickener are matched. The parameter design of thickener is based on the thickener

6. In case of environmental accident, the leaked materials can be collected, and the capacity can guarantee the maximum leakage. The accident pool must be anticorrosive, and the groundwater cannot be polluted.

7. The function of anaerobic sedimentation tank: in the initial stage of bacteria cultivation, the sludge and excess sludge are separated and concentrated in this liquid-solid system, and generally the sludge will not return to the system; It is treated as excess sludge.

8. This belongs to the scope of drainage professional and self drainage, relatively speaking, is forced drainage, that is, using the pump power to lift the water to discharge

generally speaking, the forced drainage pool is mostly used to drain rainwater, because when there is heavy rain (especially rainstorm), the water volume will suddenly increase several times, and the original self drainage facilities can not meet the drainage requirements. So we set up a strong rainwater drainage pool to collect rainwater and pump it away

hope to help you
please adopt o (∩)_ ∩)O~

9.

Function of sedimentation tank: sedimentation tank is generally a structure for separating sludge and water before or after biochemical treatment, mostly for separating finer sludge particles. Before biochemical treatment, it is called primary sedimentation tank. The sludge precipitated has more inorganic components, and the moisture content of sludge is lower than that of secondary sedimentation tank. After biochemical sedimentation tank is generally called secondary sedimentation tank, which is mostly organic sludge with high moisture content

the plane of the sedimentation tank body is rectangular, and the inlet is set at one end of the tank length. Generally, the submerged inlet hole is used. Water flows into the tank body through the uniformly distributed inlet hole through the inlet channel, and a baffle is set behind the inlet hole to make the water flow evenly distributed in the cross section of the whole tank width

extended data:

the methods of separating and recovering insoluble suspended pollutants (including oil film and oil bead) in wastewater by physical action can be divided into gravity separation method, centrifugal separation method and screen filtration interception method

the treatment units of gravity separation method include sedimentation, floatation (air floatation), etc., and the corresponding treatment equipment are grit chamber, sedimentation tank, oil separator, air floatation tank and its auxiliary devices. Centrifugal separation is a kind of treatment unit, and the treatment devices used include centrifugal separator and water cyclone separator

there are two kinds of treatment units in screen filtration interception method, the former uses grid and screen, while the latter uses sand filter and microporous filter. The treatment method based on heat exchange principle also belongs to physical treatment method, and its treatment units include evaporation, crystallization, etc

10. The excellent water distribution equipment and drainage equipment of overseas filtration devices are selected to make the filtration speed of all filtration surfaces uniform and consistent, and to ensure the actual filtration effect and maximize the reasonable filtration rate. In addition, according to the mixing ratio standard of filter materials in scientific research, a variety of special filter materials are used to form a double-layer filter layer, so that the actual filtering effect is better and the oxidation tower is deeper. When the seepage water body suddenly turns vicious, it can also ensure that the water body of the output water is pure, preventing the defect of poor transformation of shallow filter materials into the water body of the imported filter device< Second, it has high compressive strength and corrosion resistance.
the sand cylinder is made of top glass fiber raw materials and the best proction process in the world, which makes the cylinder body rable, can avoid deformation and chemical erosion, and has low consumption rate. Moreover, it is coated with anti UV raw materials, and the cylinder body is guaranteed for ten years. Beautiful appearance, easy to use; In addition, according to the specific situation of the project, the sand tank can be selected in the way of seed preservation. For example, glass fiber raw material sand tank can not be used in multi-storey buildings. In addition, the unique bottom pipe of the sand tank can make the water flow get the average value, so that the bottom pipe drainage pipe can give full play to the larger total flow and quality of the drainage pipe
the water circulation system of swimming pool is a detailed system. To ensure the quality of water, not only a good filtering device but also other accessories are required to have very good quality. Only in this way can we ensure that the quality of the swimming pool is up to the standard and can be operated
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Third, electrostatic attraction
for some reasons, chemical fibers and particles may carry positive charges, resulting in electrostatic interaction. The filtering effect of the filtering system with electrostatic inction can be greatly improved. Cause: electrostatic inction makes the st change track and hit the obstacles, electrostatic inction makes the st stick more firmly on the material. Raw materials with long-term electrostatic inction are also called & quot; Electret & quot; raw material. The friction resistance of raw materials with electrostatic inction will not change, and the actual effect of filtering will be greatly improved. Electrostatic inction has no decision-making effect in the actual effect of filtering, but only auxiliary effect
Fourth, filtering substances
in fact, the air filter screen is to filter the solid substances in the air, such as iron pins or pebbles. However, such substances will damage the piston rod sealing ring, block the small vent holes on the electronic devices, rece the service life of the electronic devices or make them ineffective. The effect of the air filter is to extract the liquid and liquid droplets in the air compression, and filter the st and solid resies in the air, but it can not remove the vapor water and oil< The fifth is to prevent the floating st particles in the air from moving with the action of inertial force, irregular Brownian motion or some kind of field force. When the particles collide with other objects, the intermolecular force between the objects makes the particles stick to the surface of the chemical fiber. The floating st entering the filtered material has more opportunities to collide with the material, which will be stuck.