Filtering device with filter body adopting flaky filtering material

Abstract

The invention belongs to the technical field of water treatment, in particular to a filtering device with a filter body adopting flaky filtering materials. The filtering device comprises a flaky filtering assembly, a dredging pipe, a dredging pump, a dolly, a dolly guide rail, a clapboard, an effluent weir and a shell, wherein a water inlet, a water outlet and a vent nozzle are arranged below theshell, the flaky filtering assembly is vertically arranged in the shell, a clear water outlet pipe is arranged at the bottom of the flaky filtering assembly, the effluent weir is vertically fixed at the water outlet near the shell, the clapboard is vertically fixed in the shell and positioned between the flaky filtering assembly and the effluent weir, the dolly guide rail is positioned at the topof the shell, the dolly is positioned on the dolly guide rail and can move on the dolly guide rail back and forth, the dredging pump is fixed below the dolly, one end of the dredging pipe is positioned at two sides of the flaky filtering material assembly, and the other end of the dredging pipe is connected with the dredging pump by a main dredging pipe. The invention adopts valve-free operationsand the light filtering materials, increases the filtering area, reduces the filtering load, has less backwashing water consumption and flexible system collocation and is convenient for increasing treating scale. The invention has the advantages of low energy consumption, small occupying area, simple operation and maintenance, and the like, and has higher purifying efficiency while in integrated application with the generate water treatment technology as well as wide application prospects.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a filter device whose filter body is a sheet filter material. Background technique [0002] Since the emergence of natural slow filters, the form of filters and the materials of filter materials are constantly changing. The forms of filters include ordinary fast filters, double-valve filters, siphon filters, valveless filters, and soda recoil filters. etc.; filter materials include quartz sand, white coal, ceramsite, discs, plastic beads, microporous tubes, fibers, etc. The changes are mainly carried out around three aspects: [0003] (1) Reduce the use of valves to save investment and reduce operating links. [0004] (2) Change the variety and combination of filter materials. In order to improve the sewage interception ability of the filter material and improve the water quality of the effluent, and it is easy to implement backwashing. [0005] (3) Save b...

AI Technical Summary

Problems solved by technology

[0007] (1) Using granular filter material, it is impossible to achieve reverse particle size distribution

Even for the so-called homogeneous filter material, after backwashing, there will always be layers of upper and lower layers, resulting in premature clogging of the surface layer, resulting in shortened filtration cycle and increased water consumption for rinsing; in addition, the filter material is bulky and difficult to fill and replace

[0008] (2) With the increasing scale of water treatment, the water pumps and fans used for backwashing and the amount of water consumed are also increasing, resulting in high energy consumption and a large footprint

[0009] (3) Once the filter material is put into use, its porosity cannot be changed, and it cannot be adjusted according to the filtering effect, which lacks flexibility

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