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Device for improving water purification efficiency of ultra-filtration membrane by performing pre-treatment of activating persulphate by ferrous ions and application method thereof

A technology for activating persulfate and ferrous ions, used in chemical instruments and methods, oxidized water/sewage treatment, water/sewage treatment, etc. Contaminant removal and other issues, to achieve the effect of improving water purification efficiency, easy operation, and enhanced removal

Pending Publication Date: 2017-06-20
NAT ENG RES CENT OF URBAN WATER RESOURCE +1
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AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of membrane pollution and trace organic matter removal in the operation of ultrafiltration membranes, and conventional pretreatment technology cannot effectively alleviate ultrafiltration membrane pollution and strengthen the removal of pollutants, and provide ferrous ion-activated persulfate Device for improving water purification efficiency of ultrafiltration membrane by pretreatment and method for water treatment using the device

Method used

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  • Device for improving water purification efficiency of ultra-filtration membrane by performing pre-treatment of activating persulphate by ferrous ions and application method thereof

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specific Embodiment approach 1

[0024] Specific implementation mode one: combine figure 1 Describe this embodiment, the device of ferrous ion activated persulfate pretreatment in this embodiment to improve the water purification performance of ultrafiltration membrane consists of raw water pipeline 6, ferrous ion dosing device 1, persulfate dosing device 2, oxidation mixing Condensation reaction tank 3, sedimentation tank 4 and ultrafiltration membrane module 5; said raw water pipeline 6 is provided with ferrous ion dosing device 1 and persulfate dosing device 2 in sequence along the water flow direction, and said raw water pipeline The outlet of 6 is connected with the water inlet of the oxidative coagulation reaction tank 3, the water outlet of the oxidative coagulation reaction tank 3 is connected with the water inlet of the sedimentation tank 4, and the water outlet of the sedimentation tank 4 is connected with the ultrafiltration The water inlets of the membrane modules 5 are connected to each other.

specific Embodiment approach 2

[0025] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the water inlet of the sedimentation tank 4 is set at the lower part of the sedimentation tank 4 , and the water outlet of the sedimentation tank 4 is set at the upper part of the sedimentation tank 4 . Others are the same as the first embodiment.

specific Embodiment approach 3

[0026] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 or 2 is that the sedimentation tank 4 is a flat flow sedimentation tank, an inclined tube sedimentation tank, an inclined plate sedimentation tank or a high-density sedimentation tank. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a device for improving the water purification efficiency of an ultra-filtration membrane by performing pre-treatment of activating persulphate by ferrous ions and an application method thereof, and aims to solve the problems that membrane pollution exists in ultra-filtration membrane operating, a trace organic substance removal effect is poor, and the ultra-filtration membrane pollution cannot be relieved effectively and pollutant removal cannot be reinforced in a conventional pre-treatment technology. The device consists of a raw water pipeline, a ferrous ion adding device, a persulphate adding device, an oxidative coagulation reaction tank, a sedimentation tank and an ultra-filtration membrane assembly. According to the device for improving the water purification efficiency of the ultra-filtration membrane by performing the pre-treatment of activating the persulphate by the ferrous ions and the application method thereof, a synergistic effect between the ferrous ions and the persulphate can be fully played; the ultra-filtration membrane pollution is relieved effectively, and meanwhile, the removal of micropollutant is reinforced.

Description

technical field [0001] The invention relates to a device and an application method for activating persulfate pretreatment with ferrous ions to improve the water purification efficiency of an ultrafiltration membrane. Background technique [0002] Ultrafiltration membranes can effectively intercept particles, colloids, macromolecular organic pollutants, and microorganisms in water bodies, so they have gradually become a research hotspot in the field of water treatment and have been applied on a large scale in large water plants. However, in practical applications, the membrane water treatment technology with ultrafiltration as the core still has certain limitations, such as the membrane fouling problem in the long-term operation process, which is related to the stability of the production and operation of large water plants; in addition, ultrafiltration The filter membrane has a limited effect on the removal of trace pollutants such as endocrine disruptors, drugs and personal...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/72
CPCC02F1/5245C02F1/72
Inventor 梁恒成小翔朱学武甘振东唐小斌
Owner NAT ENG RES CENT OF URBAN WATER RESOURCE
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