Device and dilatation method for treating wastewater by forcibly intercepting catalyst by adopting microwave photocatalytic coupling and degrading technology

A wastewater degradation device and catalyst technology, applied in chemical instruments and methods, light water/sewage treatment, oxidized water/sewage treatment, etc., can solve problems such as consumption, achieve volume, weaken useless dissipation, and increase wastewater treatment capacity Effect

Inactive Publication Date: 2013-07-10
NINGBO UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0029] The CN102260003A scheme pumps air into the quartz tube containing the electrodeless ultraviolet lamp to achieve the purpose of ventilation, cooling and cooling of the electrodeless ultraviolet lamp, and the air flowing through the quartz tube will be partially transformed due to the irradiation of ultraviolet rays. Therefore, the air flowing out of the quartz tube is of course air containing some ozone. This scheme transmits the ozone-containing air to the microporous aeration head located below the reactor, and releases it from the microporous aeration head. During the bottom-up rise of these ozone-containing bubbles, the ozone contained in it will encounter the organic molecules encountered in the journey and undergo a redox reaction. Of course, this redox reaction will consume part of the ozone. There is no doubt about it. However, as mentioned above, as the scheme shown in CN102260003A, many factors that cannot be ignored inevitably limit its reactor size and limit its actual processing capacity, as clearly shown in its specific examples As indicated, it can only be a small reactor with a single treatment capacity of only about 40 liters in a single tank. In the case of such a small reactor and a small inner cavity, because the overall size itself is very small, then its reaction The longitudinal size of the inner cavity of the device or the depth of filling the liquid can only be a very small size. As clearly shown in its specific implementation, this size is only about 40 centimeters, and the depth of filling the liquid is only about 40 centimeters. 40 centimeters, in fact, the depth of the liquid is of course smaller than this number, so it is analyzed based on the depth of the liquid of 40 cm. Then, what is the concept of the depth of the liquid of 40 cm? That is to say, the path of the ozone-containing air rising through the wastewater is only a short 40 cm. This path is too short, and the ozone-containing air bubbles quickly pass through the water body that is only 40 cm deep. The contact time with the water body is too short. Only a small part of the contained ozone can be used to oxidize and degrade organic matter, while most of the ozone simply passes through the liquid, escapes from the liquid surface and is emptied through the exhaust outlet. Simply put, Most of the oxidation potential of these ozone is wasted, and the escaped and wasted ozone will actually cause unnecessary air pollution; Ozone-containing air is injected into a water storage tank with a depth of one meter. When the water depth reaches one meter, the smell of ozone can still be clearly smelled near the water surface. It can be seen that the liquid depth of 40 cm is obviously not enough. Complete utilization of ozone; it can be seen that for the type of equipment such as infinite ultraviolet photochemical catalytic wastewater degradation reactor, the problem of incomplete utilization of ozone also needs attention. Obviously, people expect more complete utilization of ozone and more polluting exhaust emissions. Few infinite ultraviolet wastewater degradation reactors, this is the sixth problem

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0064] The implementation of the method in this case, the main steps are as follows:

[0065] a, use a metal cage-shaped microwave irradiation airspace confinement device to wrap the quartz tube with an electrodeless ultraviolet lamp inside, so that the quartz tube is inside the cage-shaped microwave radiation airspace confinement device, and the cage-shaped The overall structural position of the microwave irradiation airspace restrictor is inside the wastewater degradation reactor. The metal cage-shaped microwave irradiation airspace restrictor is a metal cage, and the structure of the metal cage is covered with holes or meshes. The function of the cage-shaped microwave irradiation airspace confinement device is to confine the microwave irradiation airspace inside it, thereby constructing a microwave weak radiation airspace between the outer wall of the cage-shaped microwave irradiation airspace confinement device and the inner wall of the reactor or microwave zero-irradiatio...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a device and a dilatation method for treating wastewater by forcibly intercepting a catalyst by adopting the microwave photocatalytic coupling and degrading technology, belongs to the technical field of wastewater treatment and aims to overcome the defects of loss of nano-catalysts, small treatment amount of the single tank of a reactor, high frequency of repeated operation and low general-circulation intensity of internal liquid in the prior art. The technical scheme aims at solving the above problem based on giving consideration to the effects of microwave excitation and photochemical catalytic degradation coupling. The dilation method comprises the following steps of: forcibly partitioning the microwave irradiation space inside a reactor by a metal cage so that the wastewater is coupled, catalyzed and degraded in the metal cage, and substantially extending and dilating the reaction space outside the metal cage. The dilation method further comprises the following steps of: arranging a bell-mouthed component which is used for guiding and strengthening the circulation of a liquid flow under the metal cage, and intercepting nanometer photocatalyst particles step by step by using three external cascaded backwashing filters which are different in filtering hole size.

Description

technical field [0001] The invention relates to a method for expanding the capacity of a microwave photocatalytic coupling wastewater degradation device that strengthens catalyst interception, and belongs to the technical field of CO2F wastewater treatment. Background technique [0002] Microwave photocatalytic degradation treatment technology, as an effective harmless treatment technology for industrial wastewater containing organic pollutants, has attracted much attention in recent years. [0003] Regarding the microwave photocatalytic degradation technology, as an example, refer to the Chinese patent application with publication number CN102260003A. [0004] The Chinese patent application with the publication number CN102260003A uses microwaves as the excitation source to excite the electrodeless ultraviolet lamp to emit ultraviolet rays, and irradiates the suspension mixed with photocatalyst titanium dioxide inside the liquid. The electrodeless ultraviolet lamp is shroud...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C02F9/08C02F1/32C02F1/44C02F1/78
Inventor 李榕生李天华任元龙葛从辛孙杰孔祖萍干宁王冬杰
Owner NINGBO UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products