Water treatment filter material filter membrane alloy disc stripping machine and using method thereof

Abstract

The invention discloses a water treatment filter material filter membrane alloy disc stripping machine and its use method, which mainly solves the problem of difficult filter membrane stripping caused by long-term use of the filter material used in water treatment. The filter material filter membrane is peeled off by the relatively arranged alloy grinding discs in the motor stripping system 1, in cooperation with the high-pressure water system 2 and the filter sand circulation system 3 . The invention has the characteristics of good stripping effect of the filter membrane, no need for additives in the whole process, and no pollution to the environment and the filter material.

Description

technical field [0001] The invention relates to the field of filter material cleaning in water treatment, in particular to a filter material filter membrane alloy disc stripping machine and a use method thereof. Background technique [0002] In quite a few provinces and regions of our country, the groundwater contains excessive iron and manganese. Generally, there is no catalyst in the aeration oxidation method, so the oxidation speed is relatively slow. When the groundwater containing dissolved oxygen is filtered through the filter layer, the divalent iron in the water is adsorbed by the filter material, and then oxidized and hydrolyzed to gradually form a catalytic iron-manganese active "filter membrane". Under the catalytic action of the "filter membrane", The oxidation speed of iron and manganese is greatly accelerated, and then removed by the filter material. Observing under the microscope, the manganese filter membrane is developed in the form of dotted manganese nucl...

AI Technical Summary

Problems solved by technology

Observing under the microscope, the manganese filter membrane is developed in the form of dotted manganese nuclei, and the core is filled with iron filter membrane. During each backwash process, most of the filter membrane adsorbed on the surface of the filter material particles is washed away, leaving a small The membrane stays on the surface of the filter particles as the filter particles collide with each other and forms a relatively hard filter membrane under the action of hydraulic force. During the production process, the particle size of the filter material increases with the thickening of the filter membrane. The volume of the filter material is continuously increased, the filter material layer of the filter is thickened, the distance from the surface of the filter material layer to the top surface of the drainage tank becomes smaller, the backwash cycle is greatly shortened, and the time of each backwash is extended several times. When the filter material forms the flushing intensity of the production capacity and the expansion rate of the filter material, the filter material is easily discharged to the drain tank, resulting in the loss of the filter material. The method of reducing the backwash intensity is used to reduce the loss of the filter material, resulting in increased backwash time. , water consumption, power consumption, from the effect point of view, it is far from reaching the purpose of flushing, and there is adhesion between the particle sizes due to the effect of the filter membrane. With the continuous development of this phenomenon, agglomerates are formed, and the filter material is deposited in the knot In the process of backwashing, the agglomerates cannot be liquefied, and the agglomerates cannot be washed, which makes this part of the filter material useless

All the backwashing water can only flow through between the blocks, resulting in excessive backwashing intensity between the blocks and high flow rate to form a hole in the filter material between the blocks. The filter material without agglomeration in the hole is carried to the drainage tank with the high-speed water flow. Causes the loss of effective filter material. During the filtration process, the filtration rate of the leaky part of the filter material far exceeds the theoretical filtration rate. The iron and manganese in the raw water cannot be effectively removed, which will deteriorate the filtered water and fail to achieve the filtering effect.

Finally, the filter material loses its filtering effect, so that the filter material is eliminated

It takes a lot of money to purchase and replace new filter materials. At the same time, it takes a long time for the new filter materials to generate and cultivate the active "membrane" such a "mature" process, which affects production.

Images