Multi-stage filtering unit, water purification filtering head and wastewater purification system

Abstract

The invention discloses a multi-stage filtering unit, a water purification filtering head and a wastewater purification system, and relates to the field of wastewater purification treatment. According to the invention, the multi-stage filtering unit comprises a low-density filtering polymer fiber layer, a low-density modified silica gel layer, a porous nanometer material layer, a high-density modified silica gel layer and a high-density filtering polymer fiber layer which are sequentially arranged in a water flow direction so as to effectively remove suspended solids and viscose particles in water to reduce the turbidity of the water; when the multi-stage filtering unit is used for filtering, each stage of filtering material automatically forms a sparse-first and dense-second state along the water flow direction, so that the quality of discharged water can be ensured under various operation conditions; and the water purification filtering head has the advantages of being simple in structure, high in assimilative capacity, long in service life, small in occupied space and the like, can carry a low-pressure lifting pump, ensures the high filtering speed and the high outlet water quality under the low pressure, and achieves repeated recycling of dust removal wastewater.

Description

technical field [0001] The present application relates to the field of wastewater purification treatment, in particular to a multi-stage filter unit, a water purification filter head and a wastewater purification system. Background technique [0002] A large number of existing water purification filter heads are mainly aimed at faucets, water dispensers and shower nozzles, etc. The structure is generally a water purification filter device closely combined with the faucet, and the processing objects are tap water and pure water, and it does not involve household dust removal. Wastewater and other domestic sewage purification fields. In daily life, it is not only cumbersome to repeatedly replace the dust removal wastewater, but also waste a lot of fresh water resources. [0003] In order to improve the filtering effect, the current water purification filter head blindly sets a multi-layer structure, which greatly affects the water outlet speed, and after a period of use, the ...

AI Technical Summary

Problems solved by technology

[0002] A large number of existing water purification filter heads are mainly aimed at faucets, water dispensers and shower nozzles, etc. The structure is generally a water purification filter device closely combined with the faucet, and the processing objects are tap water and pure water, and it does not involve household dust removal. Wastewater and other domestic sewage purification field

In daily life, it is not only cumbersome to repeatedly replace the dust removal wastewater, but also waste a lot of fresh water resources

[0003] The current water purification filter heads blindly set up a multi-layer structure in order to improve the filtering effect, which greatly affects the water outlet speed, and after a period of use, the water quality and flow rate are significantly reduced, and the service life is short

In addition, this kind of filter head with multi-layer structure or self-priming water inlet also has the disadvantage of high water inlet pressure, and the whole set of equipment takes up a lot of space.

Images