Kitchen wastewater treatment method and device

Abstract

The invention provides a kitchen wastewater treatment method and device. The device is characterized by comprising a filtering part, an oil-water separation part, a flocculant, coagulant aid and magnetic seed mixing-in part and a ferromagnetic substance separation part, wherein the ferromagnetic substance separation part comprises a container, a permanent magnet treatment mechanism, a water inletprovided with a first valve, a drain port provided with a second valve, a blowdown port provided with a third valve as well as a discharge port; the permanent magnet treatment mechanism comprises a plurality of permanent magnet bars, an annular scraper and a power mechanism, and the lower ends of the permanent magnet bars are connected with non-magnet-conductive bars. Compared with the prior art,the kitchen wastewater treatment device has the advantages that device size is small, ferromagnetic substance removal effect can be improved by fully using the sinking characteristic of ferromagneticsubstances, and the route for absorbing the ferromagnetic substances by magnetic force can be increased.

Description

technical field [0001] The invention relates to an excrement treatment technology. Background technique [0002] Existing kitchen wastewater treatment technologies require filtration, oil-water separation, mixing of flocculants, coagulants, magnetic seeds, and separation of ferromagnetic substances. Finally, clean water that meets the discharge requirements can be discharged into the municipal sewage pipe network for separation. The sludge that comes out is treated as solid waste. The ferromagnetic material separation process is to separate all the sewage that has been mixed with magnetic species. As disclosed in patent 201720533911.X, the separation is in the form of a disk. This technology The volume of the magnetic surface and the disk is relatively small. To achieve the desired effect, more disks are needed, resulting in a relatively large volume of the device. Moreover, due to the nature of the disk, the elevation of water flowing from bottom to top cannot be high. , T...

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Problems solved by technology

[0002] Existing kitchen wastewater treatment technologies require filtration, oil-water separation, mixing of flocculants, coagulants, magnetic seeds, and separation of ferromagnetic substances. Finally, clean water that meets the discharge requirements can be discharged into the municipal sewage pipe network for separation. The sludge that comes out is treated as solid waste. The ferromagnetic material separation process is to separate all the sewage that has been mixed with magnetic species. As disclosed in patent 201720533911.X, the separation is in the form of a disk. This technology The volume of the magnetic surface and the disk is relatively small. To achieve the desired effect, more disks are needed, resulting in a relatively large volume of the device. Moreover, due to the nature of the disk, the elevation of water flowing from bottom to top cannot be high. , therefore, the gravitational sinking characteristics of ferromagnetic substances cannot be fully utilized, and the path for removing ferromagnetic substances is not long, which also affects the effect of removing ferromagnetic substances

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