Rapid membrane filtration device for treating backwash wastewater of filter tank and use method thereof

A technology for backwashing and waste water, which is applied in the direction of special treatment targets, water/sewage treatment, chemical instruments and methods, etc. It can solve the problems of increased chlorine consumption of organic matter, enrichment of metal elements, etc., and achieves floor space saving and easy operation , The effect of simple and convenient installation of the device

Active Publication Date: 2021-10-22
佛山市三水佛水供水有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem that existing water plants generally reuse filter backwash water to the raw water end for treatment, which may easily lead to enrichment of metal elements, increase of organic matter and chlorine In order to solve the problem of increased consumption, a fast membrane filtration device and its application method for treating filter backwash wastewater are provided

Method used

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  • Rapid membrane filtration device for treating backwash wastewater of filter tank and use method thereof
  • Rapid membrane filtration device for treating backwash wastewater of filter tank and use method thereof
  • Rapid membrane filtration device for treating backwash wastewater of filter tank and use method thereof

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specific Embodiment approach 1

[0032] Specific implementation mode one: combine figure 1 and 2 This embodiment is described in detail. This embodiment is a fast membrane filtration device for treating filter backwash wastewater, which includes a submersible pump 1, a dosing box 4, a mixer 5, an ultrafiltration membrane pool 6, and an ultrafiltration membrane assembly 7. High-speed meter sweeping and mud discharge system, dual-channel aeration cleaning system 9 and ultrafiltration water production tank 15;

[0033] The submersible pump 1 is set in the raw water pool, and the submersible pump 1 is connected with the water inlet regulating valve 2 through the water inlet pipeline, and the water inlet regulating valve 2 is respectively connected with the dosing box 4 and the mixer 5 through the tee, and the mixer 5 The water outlet of the water outlet is communicated with the ultrafiltration membrane pool 6 through a pipeline;

[0034]The inside of the ultrafiltration membrane pool 6 is provided with an ultra...

specific Embodiment approach 2

[0047] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is: the pipeline between the tee and the dosing box 4 is provided with a dosing pump 3; the described water production pipeline 13 is provided with a water production pump 14; the backwashing pipeline 18 is provided with a backwashing pump 16 and a flow meter 17; the external aeration passage 19 and the central aeration passage 20 are respectively connected to the blower 12 through two inlet pipes, and the two inlet pipes Gas flowmeters 11 are provided on the trachea. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0048] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the material of the ultrafiltration membrane in the ultrafiltration membrane module 7 is polyvinylidene fluoride, polyvinyl chloride, polyethersulfone or ceramic membrane ; The ultrafiltration membrane in the ultrafiltration membrane module 7 is a hollow fiber membrane with a molecular weight cut-off of 50,000 Daltons to 300,000 Daltons. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a rapid membrane filtration device for treating backwash wastewater of a filter tank and a use method thereof, and relates to a membrane filtration device for backwash wastewater of a filter tank and a use method thereof. The invention solves the problems of metal element enrichment, organic matter increase and chlorine consumption increase which are easily caused by the fact that backwash water of a filter tank is generally recycled to a raw water end for treatment in an existing water plant The device comprises a submersible pump, a dosing tank, a mixer, an ultrafiltration membrane tank, an ultrafiltration membrane assembly, a high-speed surface sweeping sludge discharge system, a dual-channel aeration cleaning system and an ultrafiltration water production tank. The method comprises the following steps: 1, during water feeding, enabling backwash wastewater of a filter tank to enter the mixer through the submersible pump and then enter the ultrafiltration membrane tank to be filtered, and enabling effluent of the ultrafiltration membrane assembly to enter the ultrafiltration water production tank through a water production pipeline; 2, after each filtering period is finished, carrying out air-water combined backwash on the ultrafiltration membrane assembly; and 3, emptying the ultrafiltration membrane tank, and cleaning the membrane tank.

Description

technical field [0001] The invention relates to a membrane filter device for backwashing waste water in a filter tank and a use method thereof. Background technique [0002] The backwashing water of the filter in the water purification plant is mainly produced after the periodic backwashing of the filter or activated carbon filter. The backwashing wastewater of the filter in the waterworks in my country accounts for about 1.5% to 5% of the total water production. The filter backwash water carries a large number of pathogenic microorganisms (such as Giardia and Cryptosporidium), particles in the raw water, and flocs in the coagulation process, which have the characteristics of high turbidity and high solid content. The direct discharge of these production wastewater into the urban sewage treatment system will increase the load of the sewage treatment plant, and it will be directly discharged into rivers and lakes and other water bodies without treatment, which will become an ...

Claims

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Application Information

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IPC IPC(8): C02F9/04
CPCC02F1/444C02F1/5281C02F1/52C02F2303/16Y02W10/10
Inventor 韩永辉王天一许泽彬唐小斌桂成毅刘婉琼梁恒
Owner 佛山市三水佛水供水有限公司
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