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Ferrous/ultraviolet synergistically activated sodium hypochlorite coupled ultrafiltration water purification device and operation method thereof

A technology of sodium hypochlorite and operating methods, which is applied in chemical instruments and methods, water/sewage treatment, light water/sewage treatment, etc., can solve the problems of poor membrane pollution treatment effect, and achieve membrane fouling phenomenon, alleviate membrane pollution, and improve The effect of oxidative capacity

Pending Publication Date: 2021-04-02
HARBIN INST OF TECH
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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 the pre-membrane pretreatment in the existing water treatment process removes small molecules and at the same time has a poor treatment effect on membrane pollution caused by algae extracellular polymers, and provides a ferrous / ultraviolet synergistically activated sodium hypochlorite coupled ultra Device for filtering water and its operating method

Method used

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  • Ferrous/ultraviolet synergistically activated sodium hypochlorite coupled ultrafiltration water purification device and operation method thereof
  • Ferrous/ultraviolet synergistically activated sodium hypochlorite coupled ultrafiltration water purification device and operation method thereof

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specific Embodiment approach 1

[0039] Specific implementation mode one: combine figure 1 with figure 2 Describe this embodiment, the device of ferrous / ultraviolet synergistically activated sodium hypochlorite coupling ultrafiltration water purification in this embodiment includes water inlet pipe 24, sodium hypochlorite dosing tank 3, ferrous dosing tank 4, photochemical reaction zone 5, membrane filtration water purification zone 30. The water outlet pipe 22 and the backwash pipe 23, the water inlet pipe 24 is connected to the water inlet of the photochemical reaction zone 5 through the water inlet pump 2, and the water outlet of the photochemical reaction zone 5 is filtered through the photochemical reaction zone water outlet pump 10 The water inlet of the water area 30 is connected, and the water outlet of the membrane filtration water purification area 30 is respectively connected to the water outlet pipe 22 and the backwash pipe 23 through a tee;

[0040]A water inlet valve 1 is provided between the ...

specific Embodiment approach 2

[0065] In this embodiment, the above-mentioned ferrous / ultraviolet synergistically activated sodium hypochlorite coupled ultrafiltration water purification device is used for sewage treatment. The specific parameters of operation are: the dosage of sodium hypochlorite is 2 mg / L, and the dosage of ferrous iron is 15 μmol / L , the ultraviolet radiation intensity is 720mJ / cm 2 , The membrane molecular weight cut-off of the ultrafiltration membrane module is 100kDa.

[0066] Raw water quality: bovine serum albumin 10mg / L, turbidity 3.2-4.7NTU, dissolved organic carbon concentration 4.3-4.9mg / L, micro-pollutant atrazine concentration 100μg / L.

[0067] The treated effluent quality: turbidity 0.1NTU, dissolved organic carbon concentration 3.6-3.9mg / L, micro-pollutant atrazine concentration 9μg / L.

[0068] Transmembrane pressure difference of membrane module: 33.2~35.5kPa.

specific Embodiment approach 3

[0070] In this embodiment, the above-mentioned ferrous / ultraviolet synergistically activated sodium hypochlorite coupled ultrafiltration water purification device is used for sewage treatment. The specific parameters of operation are: the dosage of sodium hypochlorite is 4 mg / L, and the dosage of ferrous iron is 30 μmol / L , the ultraviolet radiation intensity is 720mJ / cm 2 , The membrane molecular weight cut-off of the ultrafiltration membrane module is 100kDa.

[0071] Raw water quality: humic acid 10mg / L, turbidity 2.5-3.5NTU, dissolved organic carbon concentration 4.4-4.8mg / L, micro-pollutant atrazine concentration 100μg / L.

[0072] The treated effluent water quality: turbidity 0.1NTU, dissolved organic carbon concentration 3.3-3.7mg / L, micro-pollutant atrazine concentration 7μg / L.

[0073] Transmembrane pressure difference of membrane components: 28.9~32.5kPa.

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Abstract

The invention discloses a ferrous / ultraviolet synergistically activated sodium hypochlorite coupled ultrafiltration water purification device and an operation method thereof, and relates to a ferrous / ultraviolet synergistically activated sodium hypochlorite coupled ultrafiltration water purification device and an operation method thereof. The invention aims to solve the problem of poor membrane pollution treatment effect caused by algae extracellular polymeric substances while micromolecules are removed by membrane pretreatment in the existing water treatment process. The device comprises a water inlet pipe, a sodium hypochlorite adding tank, a ferrous iron adding tank, a photochemical reaction area, a membrane filtration water purification area, a water outlet pipe and a backwashing pipe,the water inlet pipe is connected with a water inlet of the photochemical reaction area through a water inlet pump, and a water outlet of the photochemical reaction area is connected with a water inlet of the membrane filtration water purification area through a photochemical reaction area water outlet pump; a water outlet of the membrane filtration water purification area is respectively connected with the water outlet pipe and the backwashing pipe through a tee joint. According to the invention, the activation characteristic of ferrous ions and ultraviolet light on sodium hypochlorite is utilized to realize efficient removal of pollutants and improvement of membrane separation efficiency. The device and method is applied to the technical field of membrane water treatment.

Description

technical field [0001] The invention relates to the technical field of membrane water treatment, in particular to a device and an operation method for coupling ultrafiltration water purification with ferrous / ultraviolet synergistically activated sodium hypochlorite. Background technique [0002] Ultrafiltration membrane separation technology has become one of the hotspots in the field of water treatment due to its good treatment effect, small footprint, and simple operation and management. However, ultrafiltration has a limited effect on the removal of trace pollutants such as residual pesticides, personal care products, antibiotics, and toxic and refractory small molecules in water, and the accumulation of membrane fouling is prone to occur during long-term operation, which limits the further development of ultrafiltration membrane separation. and engineering promotion. [0003] The development of a new membrane process is an effective means to solve the above problems. Th...

Claims

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Application Information

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IPC IPC(8): C02F9/08C02F101/30
CPCC02F9/00C02F1/32C02F1/76C02F1/5236C02F1/444C02F2101/30
Inventor 梁恒邢加建
Owner HARBIN INST OF TECH
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