Ultraviolet fluid treatment device

Abstract

The invention provides an ultraviolet fluid treatment device, and concretely relates to a medium-pressure and / or low-pressure mixed novel ultraviolet fluid treatment device. Medium-pressure and / or low-pressure ultraviolet lamp tubes in the device refer to a medium-pressure multispectral ultraviolet lamp tube, a low-pressure ultraviolet lamp tube or an excimer ultraviolet lamp tube which are mounted in a mixed manner (the device comprises ultraviolet lamp tubes with two or more different types and / or powers). An ultraviolet intensity sensor assembly monitors the luminous intensity of the ultraviolet lamp tubes in real time and feedbacks the monitoring result to a control system, and the control system can automatically adjust the powers of the ultraviolet lamp tubes according to a feedbacksignal, and can give an alarm for reminding when the intensity is insufficient and automatically adjust the powers or close the specific lamp tube during insufficient flow or special application in order to adaptively adjust the power of the system, so that the working efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the field of ultraviolet disinfection and organic matter decomposition equipment, and in particular relates to an ultraviolet fluid treatment equipment. Background technique [0002] Microbial pollution and trace organic pollution in water are two core issues that threaten the safety of drinking water, especially the increasing use of pesticides, gasoline additives, pharmaceuticals (such as antibiotics) and personal care chemicals, which pose an increasing threat to water quality safety and human health rise. As a mature disinfection technology, ultraviolet disinfection has been used for decades, and ultraviolet advanced oxidation decomposition to remove organic matter in water has also gradually developed in the past ten years. [0003] Ultraviolet rays are the general term for 5-400nm electromagnetic waves. Different wavelengths of ultraviolet rays play different roles in water treatment or other fluid treatment fields, and ...

AI Technical Summary

Problems solved by technology

[0005] Lamp tubes of different technologies have their different advantages and disadvantages. For example, low-voltage ultraviolet lamp tubes have low power and often require a large number of lamp tubes; especially in the application of photochemical decomposition, because the ultraviolet radiation dose required for photochemical decomposition It is dozens of times that of disinfection, so the total number of lamp tubes required to handle the same flow is even larger. The light intensity monitoring and operation and maintenance of this system bring great challenges. The initial investment and land occupation of the equipment also limit its scope of use.

[0006] The power of a single medium-pressure ultraviolet lamp is high, up to ten kilowatts or more. The equipment is compact and easy to maintain. However, the photoelectric conversion efficiency of the medium-voltage lamp is much lower than that of the low-voltage ultraviolet lamp. high

Moreover, according to the computer fluid software simulation of the flow state of the fluid flowing through the pipeline, it can be clearly seen that the flow velocity of water in different positions in the pipeline is different. For example, the fluid in the center of the pipeline is turbulent and the flow velocity is high. In the ultraviolet equipment The contact time with ultraviolet light is short, and it belongs to laminar flow near the tube wall. Large absorption loss, further reducing the overall efficiency of the system

[0007] Although ultraviolet fluid treatment equipment is widely used in water disinfection, syrup and juice disinfection, and organic matter decomposition in water; but the above-mentioned single lamp tube is generally selected in the system to facilitate system maintenance or consumable inventory, but it greatly reduces equipment efficiency and has other side effects. The risk of the product, in the advanced oxidation, it is necessary to add an additional oxidant or increase the equipment to achieve the corresponding effect

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