阅读说明：本技术 一种紫外线废水cod降解处理系统和废水cod降解处理方法 (Ultraviolet wastewater COD degradation treatment system and wastewater COD degradation treatment method ) 是由 马文杰 林若沙 林若凡 文邦 于 2019-10-31 设计创作，主要内容包括：本发明提供一种紫外线废水COD降解处理系统和废水COD降解处理方法,包括氧化反应水箱、脱氧型COD降解灯管和氧化性物质加注装置,进水口和出水口分别设置在氧化反应水箱的首端和末端,进水口设置有第一水泵和第一闸阀,出水口设置有第二水泵和第二闸阀,脱氧型COD降解灯管布置于氧化反应水箱内,氧化性物质加注装置用于向氧化反应水箱内加入氧化性物质。通过脱氧型紫外线灯管取代常规的紫外线灯管,这样就不会因气隙中存在臭氧而引起对灯管发出的紫外线形成无效吸收,灯管发出的紫外线能量也就都能高效投射入水中,为高效降解水中的COD提供了最基本的保障；同时配合氧化性物质加注装置将氧化性物质输入水中,提升降解处理系统处理效能。(The invention provides an ultraviolet wastewater COD degradation treatment system and a wastewater COD degradation treatment method, which comprise an oxidation reaction water tank, a deoxidation type COD degradation lamp tube and an oxidizing substance filling device, wherein a water inlet and a water outlet are respectively arranged at the head end and the tail end of the oxidation reaction water tank, the water inlet is provided with a first water pump and a first gate valve, the water outlet is provided with a second water pump and a second gate valve, the deoxidation type COD degradation lamp tube is arranged in the oxidation reaction water tank, and the oxidizing substance filling device is used for adding oxidizing substances into the oxidation reaction water tank. The deoxidation type ultraviolet lamp tube is used for replacing the conventional ultraviolet lamp tube, so that the ultraviolet rays emitted by the lamp tube cannot be inefficiently absorbed due to the ozone existing in the air gap, the energy of the ultraviolet rays emitted by the lamp tube can be efficiently projected into water, and the most basic guarantee is provided for efficiently degrading COD in the water; meanwhile, the oxidizing substance is input into water by matching with an oxidizing substance filling device, so that the treatment efficiency of the degradation treatment system is improved.)

1. The utility model provides an ultraviolet waste water COD degradation processing system which characterized in that: including oxidation reaction water tank, deoxidation type COD degradation fluorescent tube and oxidizing substance filling device, oxidation reaction water tank is provided with water inlet and delivery port, water inlet and delivery port set up head end and the end at oxidation reaction water tank respectively, the water inlet is provided with first water pump and first gate valve, the delivery port is provided with second water pump and second gate valve, deoxidation type COD degradation fluorescent tube arranges in oxidation reaction water tank, oxidizing substance filling device is used for adding oxidizing substance in to oxidation reaction water tank.

2. The ultraviolet wastewater COD degradation treatment system of claim 1, which is characterized in that: the oxidation reaction water tank is also provided with a circulating pipeline, the two ends of the circulating pipeline are respectively arranged at the head end and the tail end of the oxidation reaction water tank, and a third water pump and a third gate valve are arranged on the path of the circulating pipeline.

3. The ultraviolet wastewater COD degradation treatment system of claim 2, which is characterized in that: and a water quality sampling monitoring device is arranged on the path of the circulating pipeline.

4. The ultraviolet wastewater COD degradation treatment system of claim 2, which is characterized in that: and a vertically arranged water flow guide plate is arranged in the oxidation reaction water tank.

5. The system for treating ultraviolet wastewater COD according to claim 4, characterized in that: the water flow guide plate comprises an upper guide plate and a lower guide plate, the upper guide plate and the lower guide plate are sequentially arranged, and the upper end of the lower guide plate is connected with a lifting plate cylinder.

6. The ultraviolet wastewater COD degradation treatment system of claim 1, which is characterized in that: the oxidizing substance filling device comprises an aeration head, and the aeration head is arranged at the bottom of the oxidation reaction water tank.

7. The system for treating ultraviolet wastewater COD according to claim 6, characterized in that: the oxidizing substance filling device also comprises an ozone generating device, and the ozone generating device is arranged at the air inlet end of the aeration head.

8. The ultraviolet wastewater COD degradation treatment system of claim 1, which is characterized in that: the device also comprises a buffer water tank, wherein the buffer water tank is arranged at the front end of the water inlet of the oxidation reaction water tank.

9. The ultraviolet wastewater COD degradation treatment system of claim 1, which is characterized in that: the deoxidation type COD degradation lamp tube comprises a quartz sleeve and an ultraviolet lamp tube, wherein the ultraviolet lamp tube is installed in the quartz sleeve and sealed, a deoxidizer is arranged in the quartz sleeve, and the deoxidizer is arranged at a position which does not influence the illumination of the ultraviolet lamp tube.

10. The ultraviolet wastewater COD degradation treatment system of claim 9, which is characterized in that: the ultraviolet lamp tube adopts double-wavelength ultraviolet lamps with the wavelengths of 185nm and 254 nm.

11. The ultraviolet wastewater COD degradation treatment system of claim 1, which is characterized in that: and a filter tank is arranged at the water inlet of the oxidation reaction water tank.

12. A COD degradation treatment method for ultraviolet wastewater is characterized in that: adding sewage into an oxidation reaction water tank, increasing the content of oxygen and/or ozone in the sewage through an aeration head, and degrading 185nm and 254nm ultraviolet energy emitted by a strip lamp through deoxidation type COD; wherein, the oxygen molecule absorbs 185nm ultraviolet energy to generate ozone molecule; ozone molecule absorbs 254nm ultraviolet energy to generate oxygen molecule and excited oxygen atom, and the excited oxygen atom is combined with water molecule to generate hydroxyl radical; the water molecule absorbs 185nm ultraviolet energy to generate hydroxyl free radical, hydrogen ion and hydrated electron; hydroxyl free radicals, hydrogen ions and hydrated electrons with strong oxidation capability mineralize organic matters in water into water molecules and carbon dioxide molecules.

Technical Field

The invention relates to the technical field of water treatment devices, in particular to an ultraviolet wastewater COD degradation treatment system and a wastewater COD degradation treatment method.

Background

The application of ultraviolet lamps in sewage treatment is mainly focused on utilizing the sterilization capability of the ultraviolet lamps, and with the continuous research on ultraviolet application technology in recent years, the ultraviolet in the C wave band is found to play an important role in triggering the advanced oxidation process in water, degrading organic matters (COD) in the water and improving the water quality. And the process for degrading COD in water by ultraviolet has the advantages of no introduction of any new secondary pollutant, no sludge discharge, strong oxidation capacity, wide application range, simple equipment, easy maintenance and the like. However, the application of ultraviolet light in degrading organic matters in sewage is limited due to the lack of means for allowing ultraviolet energy (particularly 185nm ultraviolet energy) to enter water efficiently.

Disclosure of Invention

The present invention is directed to solving the above problems, and provides an ultraviolet wastewater COD degradation treatment system and a wastewater COD degradation treatment method, wherein ultraviolet rays can efficiently enter water, and a large amount of hydroxyl radicals are generated in combination with sufficient oxygen or ozone in the water, so as to obtain better COD degradation efficiency.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides an ultraviolet ray waste water COD degradation processing system, includes oxidation reaction water tank, deoxidation type COD degradation fluorescent tube and oxidizing substance filling device, oxidation reaction water tank is provided with water inlet and delivery port, water inlet and delivery port set up head end and the end at oxidation reaction water tank respectively, the water inlet is provided with first water pump and first gate valve, the delivery port is provided with second water pump and second gate valve, deoxidation type COD degradation fluorescent tube arranges in oxidation reaction water tank, oxidizing substance filling device is used for adding oxidizing substance to oxidation reaction water tank in.

Furthermore, the oxidation reaction water tank is also provided with a circulating pipeline, the two ends of the circulating pipeline are respectively arranged at the head end and the tail end of the oxidation reaction water tank, and a third water pump and a third gate valve are arranged on the path of the circulating pipeline.

Furthermore, a water quality sampling monitoring device is arranged on the path of the circulating pipeline.

Furthermore, a vertically arranged water flow guide plate is arranged in the oxidation reaction water tank.

Furthermore, the rivers deflector includes guide plate and lower guide plate, go up guide plate and guide plate setting gradually down, the upper end of guide plate is connected with the arm-lifting cylinder down.

Further, the oxidizing substance filling device comprises an aeration head, and the aeration head is arranged at the bottom of the oxidation reaction water tank.

Furthermore, the oxidizing substance filling device also comprises an ozone generating device, and the ozone generating device is arranged at the air inlet end of the aeration head.

Further, the device also comprises a buffer water tank, wherein the buffer water tank is arranged at the front end of the water inlet of the oxidation reaction water tank.

Further, deoxidation type COD degradation fluorescent tube includes quartz sleeve and ultraviolet tube, ultraviolet tube installs in quartz sleeve to seal, be provided with the deoxidier in the quartz sleeve, the deoxidier sets up the position that does not influence ultraviolet tube illumination.

Further, the ultraviolet lamp tube is an ultraviolet lamp with double wavelengths of 185nm and 254 nm.

Furthermore, a filter tank is arranged at the water inlet of the oxidation reaction water tank.

A COD degradation treatment method of ultraviolet wastewater comprises adding sewage into an oxidation reaction water tank, increasing oxygen and/or ozone content in the sewage through an aeration head, and degrading 185nm and 254nm ultraviolet energy emitted by a lamp tube through a deoxidation type COD; wherein, the oxygen molecule absorbs 185nm ultraviolet energy to generate ozone molecule; ozone molecule absorbs 254nm ultraviolet energy to generate oxygen molecule and excited oxygen atom, and the excited oxygen atom is combined with water molecule to generate hydroxyl radical; the water molecule absorbs 185nm ultraviolet energy to generate hydroxyl free radical, hydrogen ion and hydrated electron; hydroxyl free radicals, hydrogen ions and hydrated electrons with strong oxidation capability mineralize organic matters in water into water molecules and carbon dioxide molecules.

The invention has the beneficial effects that:

by adopting the technical scheme, the ultraviolet wastewater COD degradation treatment system replaces a conventional ultraviolet lamp tube with the deoxidation type ultraviolet lamp tube, so that the ultraviolet rays emitted by the lamp tube cannot be inefficiently absorbed due to the existence of ozone in the air gap, the energy of the ultraviolet rays emitted by the lamp tube can be efficiently thrown into water, and the most basic guarantee is provided for efficiently degrading COD in water; meanwhile, the oxidizing substance is input into water by matching with an oxidizing substance filling device, so that the treatment efficiency of the degradation treatment system is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of a structure of an ultraviolet wastewater COD degradation treatment system of the invention;

FIG. 2 is a schematic structural diagram of the deoxidation type COD degradation lamp tube of the present invention.

Reference numerals: 1. an oxidation reaction water tank; 11. a water inlet; 12. a first water pump; 13. a first gate valve; 14. a water outlet; 15. a second water pump; 16. a second gate valve; 17. a circulation pipe; 18. a third water pump; 19. a third gate valve; 2. a deoxidation TOC degradation lamp tube; 21. a quartz sleeve; 22. an ultraviolet lamp tube; 23. a deoxidizing agent; 3. an aeration head; 4. a water quality sampling monitoring device; 51. an upper deflector; 52. a lower deflector; 53. a lifting plate cylinder; 6. an ozone generating device; 7. a filter tank; 8. a blowoff valve; 9. and a water buffer tank.

Detailed Description

The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.

As shown in fig. 1, an ultraviolet wastewater COD degradation treatment system comprises an oxidation reaction water tank 1, a deoxidation type COD degradation lamp tube 2 and an oxidizing substance filling device, wherein the oxidation reaction water tank 1 is provided with a water inlet 11 and a water outlet 14, the water inlet 11 and the water outlet 14 are respectively arranged at the head end and the tail end of the oxidation reaction water tank 1, the water inlet 11 is provided with a first water pump 12 and a first gate valve 13, the water outlet 14 is provided with a second water pump 15 and a second gate valve 16, the deoxidation type COD degradation lamp tube 2 is arranged in the oxidation reaction water tank 1, and the oxidizing substance filling device is used for adding oxidizing substances into the oxidation reaction water tank 1.

According to the design, the deoxidation type COD degradation treatment system of the ultraviolet wastewater adopts the COD degradation lamp tube 2 to replace a conventional ultraviolet lamp tube, when a double-waveband ultraviolet lamp tube (185nm +254nm) is used, ozone cannot be generated in an air gap between the ultraviolet lamp tube 22 and the quartz sleeve 21, the 185nm ultraviolet rays emitted by the ultraviolet lamp tube 22 cannot form ineffective absorption due to the ozone existing in the air gap, and 185nm ultraviolet rays and 254nm ultraviolet rays emitted by the lamp tube can be efficiently projected into water. Meanwhile, an oxidizing substance is added into the sewage in the oxidation reaction water tank 1 by matching with an oxidizing substance filling device, so that a large amount of oxidizing substances exist in the water. The oxidizing substance filling device generally adopts an aeration head 3, wherein the aeration head 3 is arranged at the bottom of the oxidation reaction water tank 1 and inputs air and oxygen into water, so that a large amount of oxygen exists in the water. If the air inlet end of the aeration head 3 is connected with an ozone generating device 6, ozone can be directly added into water. Oxygen molecules in the sewage absorb 185nm ultraviolet energy to generate ozone molecules through the action of ultraviolet energy; ozone molecule absorbs 254nm ultraviolet energy to generate oxygen molecule and excited oxygen atom, and the excited oxygen atom is combined with water molecule to generate hydroxyl radical; the water molecule absorbs 185nm ultraviolet energy to generate hydroxyl free radical, hydrogen ion and hydrated electron; hydroxyl free radicals, hydrogen ions and hydrated electrons with strong oxidation capability mineralize organic matters in water into water molecules and carbon dioxide molecules, so that the effect of efficiently degrading COD in wastewater is achieved.

The deoxidation type COD degradation lamp tube 2 comprises a quartz sleeve 21 and an ultraviolet lamp tube 22, wherein the ultraviolet lamp tube 22 is arranged in the quartz sleeve 21 and sealed, the ultraviolet lamp tube 22 is an ultraviolet lamp with double wavelengths of 185nm and 254nm, a deoxidizer 23 is arranged in the quartz sleeve 21, and the deoxidizer 23 is arranged at a position which does not influence the illumination of the ultraviolet lamp tube 22.

According to the deoxidation type COD degradation lamp tube 2 with the structure, the quartz sleeve 21 is sealed, the air content in the quartz sleeve 21 is determined by the sealing time, and along with the time, the air in the quartz sleeve 21 is subjected to deoxidation treatment, oxygen molecules are absorbed by the deoxidizer 23, so that the inside of the quartz sleeve 21 is in an oxygen-free state. When the ultraviolet lamp 22 is used for operation, no ozone is generated in the air gap between the ultraviolet lamp 22 and the quartz sleeve 21, so that no ineffective absorption of the 185nm +254nm ultraviolet rays emitted from the lamp is caused by the presence of ozone in the air gap. By matching with the quartz sleeve 22 with high ultraviolet transmission rate of 1, the ultraviolet energy emitted by the ultraviolet lamp tube 22 can be efficiently projected into water.

Wherein, the main chemical equations for generating hydroxyl radicals, hydrogen ions and hydrated electrons in the wastewater are as follows,

3O₂+hv(185nm)→2O₃

O₃+hv(254nm)→O₂+O(¹D)

O(¹D)+H₂O→2·OH

H₂O+hv(185nm)→·OH+·H

H₂O+hv(185nm)→·OH+H⁺+e^-aq

during the work period, one work flow is that the first gate valve 13 is opened, the second gate valve 16 is closed, the first water pump 12 is operated to inject the wastewater into the oxidation reaction water tank 1 from the water inlet 11 until the oxidation reaction water tank 1 is filled with the wastewater, and the first gate valve 13 and the first water pump 12 are closed. In general, a filter tank 7 is provided at a position of the water inlet 11 of the oxidation reaction water tank 1, and coarse impurities in the wastewater are filtered by the filter tank 7 after the wastewater is injected into the oxidation reaction water tank 1. And (3) starting the deoxidation TOC degradation lamp tube 2 to irradiate the wastewater in the oxidation reaction water tank 1, simultaneously opening the aeration head 3 to input air, oxygen or ozone into the water, degrading COD in the wastewater along with the time, and reducing the COD value to the recycling or discharge standard. And opening a second gate valve 16 and a second water pump 15 to discharge the degraded wastewater in the oxidation reaction water tank 1 from the water outlet 14. The subsequent wastewater treatment process is circularly repeated according to the working procedures. Since the discharge of the sewage source is generally uninterrupted, the sewage is fed into the buffer tank 9 before being fed into the oxidation reaction water tank 1. Wherein, the volume of the buffer water tank 9 is larger than or equal to the volume of the oxidation reaction water tank 1. After the oxidation reaction water tank 1 starts the work flow, the sewage in the buffer water tank 9 is added into the oxidation reaction water tank 1. And the sediments accumulated at the bottom of the box after the water treatment for many times can be discharged through the drain valve 8 after accumulating to a certain amount.

As an optimized scheme, the oxidation reaction water tank 1 is further provided with a circulating pipeline 17, two ends of the circulating pipeline 17 are respectively arranged at the head end and the tail end of the oxidation reaction water tank 1, and a third water pump 18 and a third gate valve 19 are arranged on the path of the circulating pipeline 17. During the degradation period, the third gate valve 19 and the third water pump 18 are opened, the wastewater in the oxidation reaction water tank 1 flows in the oxidation reaction water tank 1 and the circulating pipeline 17, and the deoxidation type COD degradation lamp 2 is made to fully degrade organic matters in the water in the repeated circulation of the water. And a water quality sampling monitoring device is arranged on the path of the circulating pipeline 17, the COD of the water in the circulating pipeline 17 is detected, when the detection result reaches the standard, the circulation is stopped, and the degraded water is discharged from the water outlet 14. Simultaneously, still be provided with the rivers deflector of vertical setting in oxidation reaction water tank 1, make waste water receive ultraviolet irradiation more abundant more even when flowing in oxidation reaction water tank 1, when wherein the rivers deflector has the polylith, it divide into guide plate 51 and lower guide plate 52 to distribution in proper order, and the upper end of lower guide plate 52 is connected with and carries board cylinder 53, will lower guide plate 52 and mention during the drainage, let the smooth discharge of water.

The above-described embodiments of the present invention are not intended to limit the scope of the present invention, and the embodiments of the present invention are not limited thereto, and various other modifications, substitutions and alterations can be made to the above-described structure of the present invention without departing from the basic technical concept of the present invention as described above, according to the common technical knowledge and conventional means in the field of the present invention.