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Membrane separation concentrated water treatment method and integral coupling device

A treatment device and treatment method technology, which is applied in the treatment device coupled with ultrasonic technology and membrane separation technology, membrane separation concentrated water treatment, and photocatalytic oxidation, can solve the problems of high cost and low efficiency of inorganic membrane separation, and achieve Small footprint, improved sewage treatment capacity and treatment effect, and the effect of reducing membrane fouling

Active Publication Date: 2010-07-28
VISBE XIAMEN ENVIRONMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the surface of the organic membrane is irradiated by ultraviolet light for a long time, the membrane material will be decomposed, so the membrane material used is mostly inorganic membrane, but the inorganic membrane also has the disadvantages of low separation efficiency and high cost.

Method used

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  • Membrane separation concentrated water treatment method and integral coupling device
  • Membrane separation concentrated water treatment method and integral coupling device
  • Membrane separation concentrated water treatment method and integral coupling device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: See figure 1 , the sewage to be treated is concentrated water from membrane separation in the printing and dyeing industry, of which COD 240, BOD 50, and TiO used 2 The average particle size of the particles is 0.2-0.3μm, TiO 2 The concentration is 2g / L, the submerged ultrafiltration membrane is made of PVDF, and the pore size is 0.01μm. The treatment process is as follows:

[0033] (1) Membrane separation concentrated water enters the suspension photocatalytic reactor after pretreatment, and a large amount of photocatalytic reactant TiO is added to the photocatalytic reactor 2 Particles undergo photocatalytic reaction under the irradiation of ultraviolet light. At the same time, an ultrasonic generator is installed in the photocatalytic reaction pool. Through the synergistic effect of photocatalysis and ultrasonic waves, the degradation rate and degradation effect of pollutants are improved;

[0034] (2) Wastewater treated by photocatalytic oxidation and u...

Embodiment 2

[0039] Example 2: See figure 1 and figure 2 , the sewage to be treated is concentrated water from membrane separation in the printing and dyeing industry, of which COD 300, BOD 60, and TiO used 2 The average particle size of the particles is 0.2-0.3μm, TiO 2 The concentration is 1g / L, the submerged ultrafiltration membrane material is PVC, and the pore size is 0.1 μm. The process and equipment for the treatment are the same as those in Example 1, and will not be repeated here.

[0040] After measuring the COD 80 and BOD 40 of the product water, no photocatalyst TiO can be detected in the product water 2 The existence of the photocatalytic TiO 2 is completely blocked.

Embodiment 3

[0041] Example 3: See figure 1 and figure 2 , the sewage to be treated is concentrated water from membrane separation in the printing and dyeing industry, of which COD 200, BOD 50, and TiO used 2 The average particle size of the particles is 0.2-0.3μm, TiO 2 The concentration is 3g / L, the material of the submerged ultrafiltration membrane is PES, and the pore size is 0.001 μm. The process and equipment for the treatment are the same as those in Example 1, and will not be repeated here. The material of the above-mentioned submerged ultrafiltration membrane is PES and can also be replaced with PAN.

[0042] After measuring the COD 50 and BOD 30 of the product water, no photocatalyst TiO can be detected in the product water 2 The existence of the photocatalytic TiO 2 is completely blocked.

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Abstract

The invention discloses a membrane separation concentrated water treatment method and an integral coupling device, which belong to the technical field of sewage treatment. The membrane separation concentrated water treatment method comprises the following steps that: membrane separation concentrated water is pre-treated and then enters a suspension-type photocatalytic reactor, has photocatalytic reaction under the UV radiation, and simultaneously, improves the degradation rate and the degradation effect of pollutant through the cooperation of photocatalytic and ultrasonic effect; the wastewater after photocatalytic oxidation and ultrasonic degradation enters a submerged ultrafiltration system to be filtered and then is divided into filtered water and the concentrated water; the filtered water after the filtration of the submerged ultrafiltration system enters a water production tank, and the concentrated water and photocatalytic reaction agent flow back into a photocatalytic reaction tank, wherein the photocatalytic reaction agent is recyclable, and the pollutant which is not degraded in the concentrated water is further degraded; and the integral coupling device which supports the process integrates a photocatalytic oxidation technology with an ultrasonic technology and a membrane separation technology, has the advantages of high separation efficiency, low cost, energy saving, environment protection and the like.

Description

technical field [0001] The invention discloses a membrane separation concentrated water treatment method and an integrated coupling device, which belong to the technical field of sewage treatment, and in particular relate to a treatment device and method in which photocatalytic oxidation, ultrasonic technology and membrane separation technology are coupled into one. Background technique [0002] Membrane separation technology has been widely used in industrial sewage treatment and reuse. However, membrane separation technology is a physical separation after all. It is just a process of concentrating sewage. The pollutants are all gathered at the concentrated water end, the concentration of the sewage is greatly increased, the biodegradability is poor, and the difficulty of treatment is increased. Membrane separation concentrated water treatment method has plagued many membrane engineering companies and membrane use companies, and it is also one of the main problems restricti...

Claims

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Application Information

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IPC IPC(8): C02F1/32C02F1/36C02F1/44
Inventor 王俊川
Owner VISBE XIAMEN ENVIRONMENT TECH CO LTD
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