CN107935107A - A kind of open tunnel type apparatus for ultraviolet disinfection - Google Patents

Abstract

The present invention relates to a kind of open tunnel type apparatus for ultraviolet disinfection, including flow-stopping plate, initial sterilization canal, secondary sterilization canal, automatic flushing device, reflector, uitraviolet intensity sensor, water level sensor and control module；Light cup, vitalight lamp and lens cover are provided with the initial sterilization canal；Quartz burner and quartz socket tube are provided with the secondary sterilization canal；The automatic flushing device includes cleaning solution filling pipeline, sealing cleaning ring, motor driver and cleaning ring mounting disc.The ultraviolet light of scattering is concentrated into directional light by the present invention using convex lens, luminous intensity is increased, improves the utilization rate of ultraviolet light, and treated sewage passes through ultraviolet wall from the bottom to top, the irradiation time of ultraviolet lamp is increased, is sufficiently mixed processing waste water through flow-stopping plate.Secondary sterilization canal effectively avoids influence of the processing wastewater flow to disinfection by ultraviolet light efficiency, while carries out secondary sterilization to processed sewage, kills more bacteriums as far as possible.

Description

An open channel ultraviolet disinfection device

technical field

The invention relates to the technical field of sewage disinfection treatment, in particular to an open channel ultraviolet disinfection device.

Background technique

Disinfection is the last process of sewage regeneration treatment, and it is also the most important barrier to ensure the reuse of sewage and public health safety. At present, chlorine is widely used as a disinfectant in China, but the existence of disinfection by-products poses a potential threat to the water quality safety and ecological system of reclaimed water. As an alternative product, chlorine dioxide can overcome the problem of disinfection by-products, but it is expensive and inconvenient to use. As a safe, reliable, economical and convenient disinfection method, ultraviolet disinfection has been paid more and more attention, and has been applied to the disinfection treatment of urban sewage and drinking water.

After the bacteria are irradiated by ultraviolet rays, the energy of the ultraviolet spectrum is absorbed by the nucleic acid, which is an important part of the bacteria, and the structure of the nucleic acid is destroyed. Ultraviolet rays with a wavelength of 200-295nm have bactericidal ability, and ultraviolet rays with a wavelength of 260nm have the strongest bactericidal ability. When the energy of ultraviolet rays reaches the lethal dose of bacteria and maintains a certain irradiation time, the bacteria will die in large numbers. The ultraviolet light source is a high-pressure quartz mercury lamp, and the sterilization equipment mainly includes two types: immersion type and water surface type. The former puts the lamp tube in water, which has a high utilization rate of radiant energy and better bactericidal ability, but the structure is complicated; the latter has a simple structure, but the bactericidal effect is not as good as the former because the reflector absorbs ultraviolet rays and scatters light. Ultraviolet disinfection is fast and efficient. It can also remove some spores and viruses that are difficult to kill by chlorine addition. It does not affect the physical properties and chemical components of water, does not increase the odor and taste of water, and is easy to operate, easy to manage, and easy to use. Automate.

The design of ultraviolet disinfection system mainly considers factors such as water quality, transmittance, water volume, peak coefficient, killing rate, irradiation intensity, and irradiation time. The effect of the ultraviolet disinfection system is closely related to the treatment flow and water quality. When the water volume suddenly increases, the ultraviolet irradiation time is short and a stronger radiation dose is required. Moreover, the ultraviolet system is very sensitive to the SS value of the effluent. The SS value of the effluent abroad is mostly below 10 mg/L, while the SS value of the domestic effluent is usually between 20 and 30 mg/L. Relatively speaking, a stronger radiation dose is required. At the same time, it is necessary to consider the influence of hydraulic conditions on the ultraviolet disinfection system. The ideal hydraulic condition is to completely push the flow in the direction of flow velocity and to completely mix in the cross-section. The former ensures that all fluid micro-elements have the same residence time in the reactor, while the latter Ensure thorough mixing of fluid microelements. It is difficult for the actual reactor to meet the above conditions, resulting in the inhomogeneity of the fluid cells receiving ultraviolet radiation, which affects the disinfection effect.

Contents of the invention

The purpose of the present invention is to provide an open channel type ultraviolet disinfection device, which improves the utilization rate of ultraviolet rays, reduces the impact of sudden changes in the flow rate of treated wastewater on the efficiency of ultraviolet disinfection, and indirectly increases the irradiation time by performing secondary disinfection on treated wastewater. Enhanced antivirus efficiency. The present invention realizes the purpose of the invention and adopts the following technical solutions:

An open channel ultraviolet disinfection device, comprising a baffle, a primary disinfection channel, a secondary disinfection channel, an automatic cleaning device, a reflector, an ultraviolet intensity sensor, a water level sensor and a control module; a light cup is arranged in the primary disinfection channel, Ultraviolet bulbs and mirror covers; ultraviolet lamps and quartz sleeves are arranged in the secondary disinfection channel; the automatic cleaning device includes a cleaning liquid filling pipeline, a sealed cleaning ring, a motor drive device and a cleaning ring mounting plate.

As preferably, the baffle is installed vertically, the edge of the baffle is higher than the liquid level of the primary disinfection channel, there is a gap between the lower edge of the baffle and the bottom of the primary disinfection channel, and the depth of the secondary disinfection channel is smaller than that of the primary disinfection channel. depth.

Preferably, the mirror cover is a convex lens, and the ultraviolet light bulb is installed at the focal point of the convex lens.

Preferably, one end of the quartz sleeve is open and the other end is closed, and the ultraviolet lamp is sealed in the quartz sleeve.

Preferably, the cleaning liquid filling pipe in the automatic cleaning device is connected to the seal cleaning ring, and the seal cleaning ring is installed in the cleaning ring mounting plate.

Preferably, the reflector is made of a material with high reflectivity, such as a polished aluminum plate.

Preferably, the control module provides distributed power supply, and also has data transmission and alarm functions.

The present invention compares with prior art, and its beneficial effect is reflected in:

In the present invention, the primary disinfection canal uses a convex lens to concentrate the scattered ultraviolet light into parallel light, which increases the luminous intensity and improves the utilization rate of ultraviolet light, and the treated sewage passes through the ultraviolet light wall from bottom to top, which increases the irradiation time of ultraviolet light , the treated wastewater is fully mixed through the baffle. The secondary disinfection canal effectively avoids the impact of the treated wastewater flow on the efficiency of ultraviolet disinfection. At the same time, it performs secondary disinfection on the treated sewage to kill as many bacteria as possible, which solves the problem of insufficient ultraviolet dose, incomplete killing, and bacteria The question of resurrection.

Description of drawings

Fig. 1 is a front view structural schematic diagram of the present invention.

Fig. 2 is a top view structural schematic diagram of the present invention.

Detailed ways

The present invention will be further explained by specific examples below.

As shown in Fig. 1, the present invention provides a kind of open channel type ultraviolet disinfection device, comprises baffle plate 1, primary disinfection channel 2, secondary disinfection channel 3, automatic cleaning device 4, reflection cover 5, ultraviolet intensity sensor 6, water level sensor 7 and a control module 8; the primary disinfection channel 2 is provided with a light cup 2-1, an ultraviolet light bulb 2-2 and a mirror cover 2-3; the secondary disinfection channel 3 is provided with an ultraviolet lamp 3-1 and Quartz casing 3-2; the automatic cleaning device 4 includes a cleaning solution filling pipe 4-1, a sealing cleaning ring 4-2, a motor drive device 4-3 and a cleaning ring mounting plate 4-4.

Further, the baffle 1 is vertically installed, the upper edge of the baffle 1 is higher than the liquid level of the primary disinfection channel 2, and there is a gap between the lower edge of the baffle 1 and the bottom of the primary disinfection channel 2, and the bottom of the secondary disinfection channel 3 The depth is less than the depth of the initial disinfection channel 2.

Further, the mirror cover 2-3 is a convex lens, and the ultraviolet light bulb 2-2 is installed at the focal point of the convex lens.

Further, one end of the quartz sleeve 3-2 is open and the other end is closed, and the ultraviolet lamp 3-1 is sealed in the quartz sleeve 3-2.

Further, the cleaning liquid filling pipe 4-1 in the automatic cleaning device 4 is connected to the seal cleaning ring 4-4, and the seal cleaning ring 4-2 is installed in the cleaning ring mounting plate 4-4.

Further, the reflector 5 is made of a material with strong reflectivity, such as a polished aluminum plate.

Further, the control module 8 provides power distribution and also has data transmission and alarm functions.

When in use, after the sewage is fully mixed from bottom to top through the baffle 1, it flows into the primary disinfection canal 2 through the gap between the lower edge of the baffle 1 and the bottom of the primary disinfection canal 2, and performs disinfection treatment on the light wall formed by parallel ultraviolet rays , and then the sewage flows into the secondary disinfection channel 3 for further treatment. In order to avoid the generation of "black holes", the number and installation distance of ultraviolet lamps can be reasonably arranged. Because the depth of the secondary disinfection channel 3 is relatively shallow, a reflection cover 5 is arranged above the secondary disinfection channel 3 to avoid leakage of ultraviolet rays. When the water level sensor 7 senses that the water depth is lower than the treatment design water depth, the control module 8 controls to send an alarm and cut off the power supply of the device. The ultraviolet intensity sensor 6 is used to detect the fouling condition of the quartz tube and the ultraviolet intensity. When the ultraviolet intensity is lower than the threshold, the control module 8 controls the automatic cleaning device 4 to work, and can also be set for automatic cleaning at regular intervals.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (7)

1. A kind of 1. open tunnel type apparatus for ultraviolet disinfection, it is characterised in that including flow-stopping plate, initial sterilization canal, secondary sterilization canal, from Dynamic cleaning device, reflector, uitraviolet intensity sensor, water level sensor and control module；Set in the initial sterilization canal There are light cup, vitalight lamp and lens cover；Quartz burner and quartz socket tube are provided with the secondary sterilization canal；It is described automatic clear Cleaning device includes cleaning solution filling pipeline, sealing cleaning ring, motor driver and cleaning ring mounting disc.
2. 2. a kind of open tunnel type apparatus for ultraviolet disinfection according to claim 1, it is characterised in that the flow-stopping plate is pacified vertically Dress, flow-stopping plate top edge are higher than initial sterilization canal liquid level, and flow-stopping plate lower edge leaves gap with initial sterilization canal bottom, secondary to disappear The depth of malicious canal is less than the depth of initial sterilization canal.
3. 3. a kind of open tunnel type apparatus for ultraviolet disinfection according to claim 1, it is characterised in that the lens cover is convex lens Mirror, the vitalight lamp are installed at the concave lens focus.
4. A kind of 4. open tunnel type apparatus for ultraviolet disinfection according to claim 1, it is characterised in that described quartz socket tube one end Opening, the other end are remained silent, and the quartz burner is sealed in the quartz socket tube.
5. A kind of 5. open tunnel type apparatus for ultraviolet disinfection according to claim 1, it is characterised in that the automatic flushing device Middle cleaning solution filling pipeline is connected with sealing cleaning ring, and sealing cleaning ring is installed in cleaning ring mounting disc.
6. 6. a kind of open tunnel type apparatus for ultraviolet disinfection according to claim 1, it is characterised in that the reflector is reflective The strong material of rate is fabricated, and such as polishes aluminium sheet.
7. 7. a kind of open tunnel type apparatus for ultraviolet disinfection according to claim 1, it is characterised in that the control module provides Dispensing is powered, while has data transfer and warning function concurrently.