Multi-layer filtering device for sewage treatment after waste paper product cleaning

Abstract

The invention discloses a multi-layer filtering device for sewage treatment after waste paper product cleaning. The device comprises a first layer filtering unit; the first layer filtering unit comprises a first filter box body; the lower end of the first filter box body is provided a slurry discharge port connected to a water inlet of a second layer filter unit through a slurry pipe; the second layer filter unit includes a second filter box body; the second filter box body is provided with a double-layer filter layer; the second filter box body is connected to a third layer filter unit; the third layer filter unit comprises a third filter box body; and the third filter box body is internally provided with an iron remover. A filter screen in the first filter unit can filter the pulp in thesewage; an activated carbon layer and a bamboo char layer in the second filter unit can filter impurities and large particles in the water; an ultraviolet lamp sterilizes the water to realize water sterilization effect; and the iron remover in the third layer filter unit can remove iron impurities in the water.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a multi-layer filter device for sewage treatment after cleaning waste paper products. Background technique [0002] For the waste recycling industry, the treatment of sewage after cleaning paper products is very important, and more and more attention has been paid to sewage treatment. How to treat sewage most efficiently, at low cost, and quickly has become a hot spot in the industry. Chinese patent 201510374902.6 is published A filter layer for sewage treatment after cleaning waste paper products is provided, which is a multi-layer porous structure, characterized in that the structure at least includes a support layer and an active layer, the pore diameter of the active layer is smaller than the pore diameter of the support layer, and the active layer The layer is made of chemically inert inorganic particulate material, the structure containing a hydrophobic binding material form...

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Problems solved by technology

The filter layer of the present invention, when filtering, will form a thick solid layer on the surface of the active layer without sticking to it, and the liquid will flow out with the pores to achieve the purpose of solid-liquid separation, but the design is only simple After the paper products are cleaned, the pulp or large particles of impurities in the sewage are separated from the water, and some toxic substances in the water are not treated. At the same time, there is a large amount of waste paper in the sewage, which causes the blockage of the filter layer and reduces the filtration efficiency. Therefore, It is urgent for those skilled in the art to solve relevant problems

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