CN217459044U

CN217459044U - Heterogeneous ozone catalytic oxidation and membrane separation integrated reactor

Info

Publication number: CN217459044U
Application number: CN202123439494.8U
Authority: CN
Inventors: 邢辉; 陈通; 邱海滨
Original assignee: Xiangchu Jingliu Intelligent Technology Shanghai Co ltd
Current assignee: Xiangchu Jingliu Intelligent Technology Shanghai Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-09-20
Anticipated expiration: 2031-12-31

Abstract

The utility model relates to a heterogeneous ozone catalytic oxidation and membrane separation integrated reactor, which comprises a primary membrane reaction box, wherein an inner cavity is divided into a first lower water collecting area for mixing wastewater, ozone and a medicament and a first upper water collecting area for collecting the treated wastewater from bottom to top; and a catalyst layer and a tubular microfiltration membrane are arranged between the two water collecting areas, wherein the tubular microfiltration membrane is positioned below the catalyst layer, and one end of the tubular microfiltration membrane is communicated with the first lower water collecting area. Above-mentioned heterogeneous ozone catalytic oxidation and membrane separation integration reactor can effectively get rid of a large amount of suspended particles in the former aquatic through using tubular microfiltration membrane, guarantees that the quality of water of intaking reaches heterogeneous ozone catalytic oxidation's requirement and separates out concentrated waste liquid, and the complex film subassembly is concentrated once more from tubular microfiltration membrane's concentrate, has realized the combination of high-efficient separation and pollutant elimination function, has improved waste water treatment efficiency.

Description

Heterogeneous ozone catalytic oxidation and membrane separation integrated reactor

Technical Field

The utility model relates to a waste water treatment technical field especially relates to a heterogeneous ozone catalytic oxidation and membrane separation integration reactor.

Background

With the vigorous development of social economy and the continuous development of industrial level in China, people are gradually aroused by environmental awareness and begin to pay attention to the problem of environmental pollution. The treatment problem of domestic sewage and industrial wastewater needs to be solved urgently, the treatment difficulty is a difficult point and a key point for treatment due to the fact that a large amount of organic pollutants are contained, and if the treatment is not carried out or is not thorough, water and the environment are damaged, so that the ecological environment is continuously worsened, and finally, the human body is harmed.

Advanced oxidation technology is regarded as an effective way to treat organic wastewater, and catalytic oxidation by ozone has also been widely paid attention and studied as one of them. Current catalytic ozonation technologies can be broadly divided into two categories: homogeneous phase and heterogeneous phase ozone catalysis, both compare heterogeneous catalysis and have more advantages, not only the decomposition rate of ozone is fast, the reaction is more high-efficient, and the catalyst is easily retrieved moreover, does not produce secondary pollution. However, the ozone heterogeneous catalysis still has the problems of high catalyst cost, easy dissolution of active substances, catalyst poisoning, short service life and the like.

Heterogeneous ozone catalytic oxidation has a high requirement on the quality of inlet water, suspended particulate matters (SS) need to be kept at a certain level, if the concentration of the SS in the inlet water is too high, the SS can be adsorbed on the surface of a catalyst in the reaction process, so that the catalyst poisoning is caused, the service effect and the service life of the catalyst are influenced, and the pretreatment of the inlet water to remove the SS is particularly important, but the traditional solid-liquid separation means has the problems of low efficiency, incapability of long-term operation, high cost and the like.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a reactor integrating heterogeneous ozone catalytic oxidation and membrane separation, aiming at the problem of low efficiency of the traditional solid-liquid separation method.

A heterogeneous ozone catalytic oxidation and membrane separation integrated reactor, comprising:

the inner cavity of the primary membrane reaction box is divided into a first lower water collecting area for mixing wastewater, ozone and a medicament and a first upper water collecting area for collecting the treated wastewater from bottom to top; a catalyst layer and a tubular microfiltration membrane are arranged between the two water collecting areas, wherein the tubular microfiltration membrane is positioned below the catalyst layer, and one end of the tubular microfiltration membrane is communicated with the first lower water collecting area; and

and the secondary membrane reaction box is internally provided with a composite membrane component, the other end of the tubular microfiltration membrane is communicated with a cavity below the composite membrane component, a water production pipe is arranged in the composite membrane component, and the water outlet end of the water production pipe is communicated with the first lower water collecting area.

Further, the first lower water collecting area and the first upper water collecting area are communicated through a return line.

Further, the return line comprises a pipeline communicating the first lower water collecting area and the first upper water collecting area and a circulating pump arranged on the pipeline.

Further, the cavity in the secondary membrane reaction box is divided into a second lower water collecting area and a second upper water collecting area from bottom to top; one end of the tubular microfiltration membrane is communicated with the second lower water collecting area, and the composite membrane component is arranged between the second lower water collecting area and the second upper water collecting area.

Furthermore, an overflow collecting area is arranged on the side edge of the second upper water collecting area, and the second upper water collecting area is communicated with the overflow collecting area through an overflow port.

Furthermore, a drain outlet is arranged at the lower end of the overflow collecting area.

Furthermore, air vents are formed in the top ends of the first upper water collecting area and the second upper water collecting area.

Furthermore, the top ends of the first upper water collecting area and the second upper water collecting area are provided with flushing ports.

Above-mentioned heterogeneous ozone catalytic oxidation and membrane separation integration reactor can effectively get rid of a large amount of suspended particles in the former aquatic through using tubular microfiltration membrane, guarantees that the quality of water of intaking reaches heterogeneous ozone catalytic oxidation's requirement and separates out concentrated waste liquid, and the complex film subassembly is concentrated once more from tubular microfiltration membrane's concentrate, has realized the combination of high-efficient separation and pollutant elimination function, has improved waste water treatment efficiency.

Drawings

FIG. 1 is a schematic structural view of a primary membrane reaction chamber;

FIG. 2 is a schematic structural view of a secondary membrane reaction chamber.

In the figure: 100. a first-stage membrane reaction box; 110. a first lower water collection area; 120. a first upper catchment area; 130. a tubular microfiltration membrane; 140. a catalyst layer; 150. a return line; 200. a secondary membrane reaction box; 210. a second lower catchment zone; 220. a composite membrane module; 230. a water production pipe; 240. a second upper catchment area; 250. an overflow collection zone.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In one embodiment, as shown in fig. 1 and 2, a heterogeneous ozone catalytic oxidation and membrane separation integrated reactor comprises: a primary membrane reaction tank 100 having an inner cavity divided into a first lower water collecting region 110 for mixing wastewater, ozone and chemicals and a first upper water collecting region 120 for collecting treated wastewater from the bottom to the top; the first lower water collecting region 110 and the first upper water collecting region 120 are communicated through a return line 150; and a catalyst layer 140 and a tubular microfiltration membrane 130 are disposed between the two water collection areas, wherein the tubular microfiltration membrane 130 is located below the catalyst layer 140, and one end of the tubular microfiltration membrane 130 is communicated with the first lower water collection area 110. The second-stage membrane reaction tank 200 is internally provided with a composite membrane component 220, the other end of the tubular microfiltration membrane 130 is communicated with a cavity below the composite membrane component 220, a water production pipe 230 is arranged in the composite membrane component 220, and the water outlet end of the water production pipe 230 is communicated with the first lower water collecting area 110.

When in use, raw water enters the first lower water collecting area 110, is mixed with a medicament and ozone and then does not enter the tubular micro-filtration membrane 130 for filtration, a clear wastewater liquid filtered by the tubular micro-filtration membrane 130 enters the catalyst layer 140 and is finally collected into the first upper water collecting area 120, and the return pipeline 150 can convey the clear wastewater liquid in the first upper water collecting area 120 into the first lower water collecting area 110; the wastewater concentrate that is not filtered by the tubular microfiltration membrane 130 flows into a cavity below the composite membrane module 220 in the secondary membrane reaction tank 200, the wastewater concentrate flows upward through the composite membrane module 220, and the wastewater concentrate filtered by the composite membrane module 220 flows back into the first lower water collection area 110 through the water production pipe 230.

Above-mentioned heterogeneous ozone catalytic oxidation and membrane separation integration reactor can effectively get rid of a large amount of suspended particles in the former aquatic through using tubular microfiltration membrane 130, guarantees that the quality of water of intaking reaches heterogeneous ozone catalytic oxidation's requirement and separates out concentrated waste liquid, and complex film subassembly 220 is concentrated once more with the concentrate from tubular microfiltration membrane 130, has realized the combination of high-efficient separation and pollutant elimination function, has improved waste water treatment efficiency.

In the present embodiment, the first lower sump 110 and the first upper sump 120 are communicated by the return line 150. By using the return line 150 to return the liquid of the first upper collecting area 120 to the first lower collecting area 110, the reaction time of the wastewater is extended. The particular return line 150 includes a pipe communicating the first lower collecting region 110 and the first upper collecting region 120 and a circulation pump provided on the pipe for driving the liquid of the first upper collecting region 120 to flow toward the first lower collecting region 110.

In the present embodiment, the cavity inside the secondary membrane reaction tank 200 is divided into a second lower water collecting zone 210 and a second upper water collecting zone 240 from bottom to top; one end of the tubular microfiltration membrane 130 is communicated with the second lower water collecting region 210, and the composite membrane module 220 is installed between the second lower water collecting region 210 and the second upper water collecting region 240.

In this embodiment, an overflow collecting region 250 is disposed at a side of the second upper water collecting region 240, and the second upper water collecting region 240 is communicated with the overflow collecting region 250 through an overflow port. The concentrate passing through the composite membrane assembly 220 enters the second upper collection area 240, and when the liquid level is above the overflow, the liquid above the overflow and the foam on the surface layer overflow into the overflow collection area 250, wherein the liquid returns to the second upper collection area 240 through the overflow collection area 250.

In this embodiment, a drain outlet is provided at the lower end of the overflow collecting region 250 for discharging the scum in the overflow collecting region 250. The dross flowing into the overflow collection area 250 is collected in the overflow collection area 250 and can be discharged through a drain outlet.

In this embodiment, the top ends of the first upper water collecting region 120 and the second upper water collecting region 240 are provided with vents for maintaining the pressure balance between the inside and the outside of the membrane reaction chamber.

In this embodiment, the top ends of the first upper water collecting area 120 and the second upper water collecting area 240 are opened with flushing ports for providing compressed air and cleaning water to periodically flush the inside of the tank. The normal operation of the primary membrane reaction box 100 is normal pressure, when the tubular micro-filtration membrane 130 needs backwashing, the internal pressure of the container can be raised to 0.5-0.7 MPa, and a water body with strong oxidizability in the primary membrane reaction box 100 is used as washing water to clean pollutants on the surface of the membrane, so that the design of a membrane backwashing system is simplified; because the tubular microfiltration membrane 130 is in a strong oxidation environment, organic pollutants are not easy to attach to the surface of the membrane, so that the membrane flux can be increased, and the membrane backwashing frequency can be reduced.

It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A heterogeneous ozone catalytic oxidation and membrane separation integrated reactor is characterized by comprising:

2. The integrated heterogeneous ozonation and membrane separation reactor of claim 1, wherein the first lower water collection zone and the first upper water collection zone are in communication via a return line.

3. The integrated heterogeneous ozone catalytic oxidation and membrane separation reactor according to claim 2, wherein the return line comprises a pipe connecting the first lower water collection area and the first upper water collection area and a circulation pump disposed on the pipe.

4. The heterogeneous ozone catalytic oxidation and membrane separation integrated reactor of claim 1, wherein the internal cavity of the secondary membrane reaction tank is divided into a second lower water collecting area and a second upper water collecting area from bottom to top; one end of the tubular microfiltration membrane is communicated with the second lower water collecting area, and the composite membrane component is arranged between the second lower water collecting area and the second upper water collecting area.

5. The integrated reactor for heterogeneous catalytic ozonation and membrane separation according to claim 4, wherein an overflow collecting region is arranged on the side of the second upper water collecting region, and the second upper water collecting region is communicated with the overflow collecting region through an overflow port.

6. The integrated reactor for heterogeneous catalytic ozonation and membrane separation of claim 5, wherein a drain outlet is arranged at the lower end of the overflow collecting region.

7. The integrated reactor for heterogeneous ozone catalytic oxidation and membrane separation as claimed in claim 4, wherein the top ends of the first upper water collecting region and the second upper water collecting region are opened with vent holes.

8. The heterogeneous ozone catalytic oxidation and membrane separation integrated reactor of claim 4, wherein the top ends of the first upper water collecting area and the second upper water collecting area are provided with flushing ports.