CN212425554U - Advanced wastewater treatment system - Google Patents
Advanced wastewater treatment system Download PDFInfo
- Publication number
- CN212425554U CN212425554U CN202021141149.9U CN202021141149U CN212425554U CN 212425554 U CN212425554 U CN 212425554U CN 202021141149 U CN202021141149 U CN 202021141149U CN 212425554 U CN212425554 U CN 212425554U
- Authority
- CN
- China
- Prior art keywords
- oxygen
- ozone
- gas
- tail gas
- oxidation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 20
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 163
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 162
- 239000001301 oxygen Substances 0.000 claims abstract description 162
- 239000007789 gas Substances 0.000 claims abstract description 145
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 127
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 49
- 230000003647 oxidation Effects 0.000 claims abstract description 46
- 238000000926 separation method Methods 0.000 claims abstract description 43
- 238000011084 recovery Methods 0.000 claims abstract description 27
- 238000002360 preparation method Methods 0.000 claims abstract description 9
- 230000001502 supplementing effect Effects 0.000 claims description 14
- 239000010865 sewage Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 6
- 230000001706 oxygenating effect Effects 0.000 claims description 6
- 230000000593 degrading effect Effects 0.000 claims description 3
- 239000003595 mist Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 28
- 239000002994 raw material Substances 0.000 abstract description 18
- 230000008569 process Effects 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000000746 purification Methods 0.000 abstract description 4
- 230000000295 complement effect Effects 0.000 abstract 1
- 239000002351 wastewater Substances 0.000 description 19
- 238000005516 engineering process Methods 0.000 description 9
- 238000001179 sorption measurement Methods 0.000 description 7
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000012495 reaction gas Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000013527 degreasing agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- 239000004801 Chlorinated PVC Substances 0.000 description 1
- 239000004155 Chlorine dioxide Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229920000457 chlorinated polyvinyl chloride Polymers 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229920005560 fluorosilicone rubber Polymers 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000006552 photochemical reaction Methods 0.000 description 1
- 238000011197 physicochemical method Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Abstract
The disclosure relates to the technical field of advanced wastewater treatment processes, and provides an advanced wastewater treatment system. The treatment system comprises an ozone preparation system, an oxidation system and a tail gas recovery system, wherein the ozone preparation system comprises an air separation oxygen production device and an ozone generator; the oxidation system comprises an ozone oxidation reactor and an ozone destructor; the tail gas recovery system is used for purifying the tail gas mixed gas and providing oxygen towards the ozone generator together with the air separation oxygen generation equipment. This openly adopts the air source as the air supply, utilize the empty oxygenerator that divides to make the raw material gas that high concentration oxygen-enriched gas was prepared as ozone, practice thrift the raw material gas cost, but nearly 80 ~ 90% tail gas mixed gas of recycle in entire system to carry out the separation and purification and prepare ozone as the raw material gas, greatly reduced the quantity of ozone raw material gas, the use energy consumption of the empty oxygenerator that divides has reduced simultaneously, through the oxygen of the empty oxygenerator complementary system loss that divides, need not with the help of other equipment, can effectively reduce equipment cost.
Description
Technical Field
The disclosure relates to the technical field of advanced wastewater treatment processes, in particular to an advanced wastewater treatment system.
Background
At present, the traditional methods for treating sewage and wastewater mainly comprise biological treatment methods, physical and chemical methods and advanced oxidation technologies. Although the biological treatment method has a low running cost and a good treatment effect, it is difficult to obtain a satisfactory treatment effect on a substance having poor biodegradability. The physicochemical method removes the contaminants by oxidation, adsorption, membrane filtration, etc., but the treatment cost is high, and by-products or new contaminants are generated. Advanced oxidation technology is commonly used in advanced treatment or biological pretreatment of sewage and wastewater, and is particularly commonly used in the treatment of sewage and wastewater which are difficult to biodegrade.
The advanced oxidation technology mainly comprises the following steps: photocatalytic oxidation, ultrasonic method, Fenton method, ozone oxidation method, etc. Wherein, ozone and other treatment methods are combined to form a plurality of combined processes, such as ozone-activated sludge, ozone-biological activated carbon, ozone-membrane treatment and the like, and the advanced oxidation method represented by ozone can obtain better treatment effect. However, in the prior art, the ozone oxidation method usually needs to prepare ozone through a liquid oxygen tank and provide an oxygen source through a vaporizer, so that the cost of raw material gas is high, the oxygen recovery concentration in a recovery system is low, the stability of system operation is poor, additional equipment is needed to introduce oxygen into the system, and the equipment cost is wasted.
SUMMERY OF THE UTILITY MODEL
To solve the above technical problem or at least partially solve the above technical problem, the present disclosure provides an advanced wastewater treatment system.
The advanced wastewater treatment system provided by the present disclosure comprises:
the ozone preparation system comprises an air separation oxygen generation device and an ozone generator, wherein the air separation oxygen generation device is used for preparing air into oxygen-enriched gas, the ozone generator is used for preparing the oxygen-enriched gas into ozone mixed gas, and the air separation oxygen generation device is communicated with the ozone generator through a first pipeline;
the oxidation system comprises an ozone oxidation reactor for degrading sewage by using the ozone mixed gas and an ozone destructor for destroying the oxidized ozone mixed gas;
the tail gas recovery system is used for purifying the warp the tail gas mixed gas that the ozone destructor produced warp the oxygen-enriched gas that tail gas recovery system purified the production enters into the oxygenating pipeline, the oxygenating pipeline with ozone generator intercommunication, be equipped with on the air separation oxygenerator be used for with the second pipeline of oxygenating pipeline intercommunication.
Optionally, the air separation oxygen generation device comprises an air compressor, a first cold dryer, a first oil remover, a first adsorber and a first oxygen buffer tank which are connected in sequence, air passes through the air compressor, the first cold dryer, the first oil remover and the first adsorber to form oxygen-enriched gas and then enters the first oxygen buffer tank, and the first oxygen buffer tank is communicated with the first pipeline.
Optionally, the tail gas recovery system comprises an oxygen compressor, a second cold dryer, a second oil remover, a second adsorber and a second oxygen buffer tank which are connected in sequence, the tail gas mixed gas enters the second oxygen buffer tank after oxygen-enriched gas is formed by the oxygen compressor, the second cold dryer, the second oil remover and the second adsorber, and the second oxygen buffer tank is communicated with the oxygen supplementing pipeline.
Optionally, the ozone oxidation reactor adopts an oxidation tower, a contact oxidation tank or an oxidation reaction kettle.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
(1) the air source is adopted as the air source, and the air separation oxygen generation equipment is utilized to prepare high-concentration oxygen-enriched gas as the raw material gas for preparing ozone, so that the raw material gas cost for preparing ozone can be saved;
(2) in the whole system operation process, the air separation oxygen generation equipment can realize the step-by-step starting oxygen generation mode and improve the oxygen generation amount in a step-by-step manner, so that the ozone generation amount of the system can be flexibly adjusted, and the continuous and stable operation of a wastewater system is maintained;
(3) the tail gas mixed gas discharged by the oxidation system is treated by the tail gas recovery system, the tail gas mixed gas with oxygen is treated to obtain oxygen-enriched gas with higher purity, and the oxygen-enriched gas is used as raw material gas to prepare ozone, and the oxygen-enriched gas with high purity can save the amount of oxygen supplemented by the system, so that the oxygen preparation cost is reduced;
(4) nearly 80-90% of tail gas mixed gas can be recycled in the whole system, and is separated and purified to be used as raw material gas to prepare ozone, so that the use amount of the ozone raw material gas is greatly reduced, and the use energy consumption of an air separation oxygen generation device is reduced;
(5) oxygen lost by a system is supplemented through the air separation oxygen generating equipment, other equipment is not needed, and the equipment cost can be effectively reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a block diagram of an advanced wastewater treatment system according to an embodiment of the present disclosure;
FIG. 2 is a process flow diagram of an advanced wastewater treatment system according to an embodiment of the disclosure.
Wherein, 1, air separation oxygen making equipment; 2. an ozone generator; 3. an ozone oxidation reactor; 4. an ozone destructor; 5. a tail gas recovery system; 51. an oxygen compressor; 52. a second freeze dryer; 53. a second degreaser; 54. a second adsorber; 55. a second oxygen buffer tank.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
As shown in fig. 1, the advanced wastewater treatment system provided by the embodiment of the present application includes an ozone preparation system, an oxidation system, and a tail gas recovery system 5.
The ozone preparation system comprises an air separation oxygen generation device 1 for preparing air into oxygen-enriched gas and an ozone generator 2 for preparing the oxygen-enriched gas into ozone mixed gas, wherein the air separation oxygen generation device 1 is communicated with the ozone generator 2 through a first pipeline. Namely, oxygen-enriched gas generated by the air separation oxygen generating device 1 enters the ozone generator 2 through a first pipeline, and raw gas is provided for the ozone preparation of the ozone generator 2. The ozone generator 2 decomposes and polymerizes part of oxygen in the raw material gas into ozone by high-pressure ionization (or chemical or photochemical reaction), is an allotropic transformation process of oxygen, and can also be obtained by an electrolyzed water method. This technology is mature in the prior art and therefore not overly described in this disclosure.
The oxidation system includes an ozone oxidation reactor 3 for degrading sewage with ozone mixed gas, and an ozone destructor 4 for destroying the oxidized ozone mixed gas. Wherein, the ozone oxidation reactor 3 can be operated continuously or intermittently, and the ozone oxidation device of the ozone oxidation reactor 3 can be an oxidation tower, a contact oxidation tank or an oxidation reaction kettle, and the specific device is not limited as long as the device can be used for oxidation. Moreover, since the structure and reaction principle of the ozone oxidation apparatus are common in the prior art, not much description is made in the present disclosure. After ozone oxidation degradation dirty waste water, can produce ozone tail gas, accessible ozone destructor 4 changes ozone tail gas into tail gas mixture this moment, the recovery of the tail gas of being convenient for.
The tail gas recovery system 5 is used for purifying and purifying the tail gas mixed gas generated by the ozone destructor 4, the oxygen-enriched gas generated by the purification and purification of the tail gas recovery system 5 enters an oxygen supplementing pipeline, the oxygen supplementing pipeline is communicated with the ozone generator 2, and a second pipeline communicated with the oxygen supplementing pipeline is arranged on the air separation oxygen generating equipment 1. Namely, the oxygen-enriched gas generated by the oxygen-enriched system purified by the tail gas recovery system 5 and the oxygen-enriched gas generated by the air separation oxygen generating device 1 are mixed in the oxygen supplementing pipeline and then enter the ozone generator 2 to provide reaction gas for the ozone generator 2.
In some embodiments, the air separation oxygen production equipment 1 comprises an air compressor, a first cold dryer, a first oil remover, a first adsorber and a first oxygen buffer tank which are connected in sequence, wherein air forms oxygen-enriched gas through the air compressor, the first cold dryer, the first oil remover and the first adsorber and then enters the first oxygen buffer tank, and the first oxygen buffer tank is communicated with a first pipeline.
Specifically, the air compressor pressurizes air and supplies the air to the first cold dryer, the first cold dryer cools, dries and removes impurities to obtain low-temperature and high-pressure compressed air, oil mist in the air is removed through the first oil remover and is sent to the first adsorber, adsorption separation of nitrogen, carbon dioxide, water vapor and other components is completed through the first adsorber, and the obtained oxygen-enriched air is sent to the first oxygen buffer tank. The first oxygen buffer tank is used to store oxygen-enriched gas and to control the amount of oxygen-enriched gas entering the ozone generator 2.
In another embodiment, the air separation oxygen production equipment 1 comprises a blower, a vacuum pump, a cooler, an adsorption system and a third oxygen buffer tank for oxygen production.
According to the method, an air source is used as a raw material gas, oxygen-enriched gas is prepared by using a pressure swing adsorption technology or a low-pressure adsorption vacuum desorption technology, the concentration of the obtained oxygen is greater than or equal to 93%, and the oxygen-enriched gas is used as the raw material gas of the ozone generator 2, so that the system requirements are met. And the method for preparing ozone can effectively save cost.
In some embodiments, as shown in fig. 2, the tail gas recovery system 5 includes an oxygen compressor 51, a second cooling dryer 52, a second oil remover 53, a second adsorber 54, and a second oxygen buffer tank 55, which are connected in sequence, the tail gas mixture enters the second oxygen buffer tank 55 after forming an oxygen-rich gas through the oxygen compressor 51, the second cooling dryer 52, the second oil remover 53, and the second adsorber 54, and the second oxygen buffer tank 55 is communicated with the oxygen supplementing pipeline.
Specifically, the oxygen compressor 51 pressurizes the exhaust gas mixture generated by the ozone destructor 4 and supplies the pressurized exhaust gas mixture to the second freeze dryer 52, the second freeze dryer 52 cools, dries, and removes impurities to obtain a low-temperature and high-pressure compressed gas, the second degreaser 53 removes oil mist in the gas and sends the gas to the second adsorber 54, the second adsorber 54 performs adsorption separation of components such as nitrogen, carbon dioxide, and water vapor, and the obtained oxygen-enriched gas is sent to the second oxygen buffer tank 55. The second oxygen buffer tank 55 is used to store the oxygen-enriched gas and control the amount of oxygen-enriched gas entering the oxygen supply pipeline.
Similarly, in other embodiments, the tail gas recovery system 5 may also include a blower, a vacuum pump, a cooler, an adsorption system, and a fourth oxygen buffer tank.
The advanced wastewater treatment system has the following advantages:
(1) the air source is adopted as the air source, the air separation oxygen-making equipment 1 is utilized to prepare high-concentration oxygen-enriched gas as the raw material gas for preparing ozone, and the cost of the raw material gas for preparing ozone can be saved;
(2) the tail gas mixed gas discharged by the oxidation system is treated by the tail gas recovery system 5, the tail gas mixed gas with oxygen is treated to obtain oxygen-enriched gas with higher purity, and the oxygen-enriched gas is used as raw material gas to prepare ozone, and the oxygen-enriched gas with high purity can save the amount of oxygen supplemented by the system, so that the oxygen production cost is reduced;
(3) nearly 80-90% of tail gas mixed gas can be recycled in the whole system, and is separated and purified to be used as raw material gas to prepare ozone, so that the use amount of the ozone raw material gas is greatly reduced, and the use energy consumption of the air separation oxygen production equipment 1 is reduced;
(4) oxygen lost by the system is supplemented through the air separation oxygen generation equipment 1, other equipment is not needed, and the equipment cost can be effectively reduced;
(5) the oxygen-enriched gas generated by the oxygen-enriched system purified by the tail gas recovery system 5 and the air separation oxygen generating equipment 1 is mixed in the oxygen supplementing pipeline and then enters the ozone generator 2, so that the concentration of the reactor is ensured, and meanwhile, the occupied space can be effectively reduced by arranging the oxygen supplementing pipeline.
Referring to fig. 1 and 2, the present disclosure further provides a wastewater advanced treatment system comprising the following steps:
firstly, air is made into oxygen-enriched gas through an air separation oxygen making device 1, and the oxygen-enriched gas enters an ozone generator 2 to generate ozone mixed gas. Wherein, O in the ozone mixed gas3、O2And N2The volume ratio of (A) is 8-13%: 80-85%: 5-8 percent.
The air separation oxygen generating device 1 and the ozone generator 2 in the treatment process are the same as the air separation oxygen generating device 1 and the ozone generator 2 in the wastewater deep treatment in principle and function, and the air separation oxygen generating device 1 is communicated with the ozone generator 2 through a first pipeline, so the principle and the working mode of the air separation oxygen generating device 1 and the ozone generator 2 are not further described.
And step two, the ozone mixed gas enters an ozone oxidation reactor 3 to degrade sewage, and the oxidized ozone mixed gas enters an ozone destructor 4 to generate tail gas mixed gas. Wherein, O in the tail gas mixed gas2And N2Is 85-90%: 5-10% of CO as the rest gas2And a mixture of water vapor.
The ozone oxidation reactor 3 and the ozone destructor 4 are the same in principle and function as the ozone oxidation reactor 3 and the ozone destructor 4 in the advanced wastewater treatment, and therefore, the description thereof is not repeated.
And step three, purifying and purifying the tail gas mixed gas in a tail gas recovery system 5 to obtain oxygen-enriched gas, and enabling the oxygen-enriched gas to enter the ozone generator 2 through an oxygen supplementing pipeline.
The function and principle of the tail gas recovery system 5 are the same as those of the tail gas recovery system 5 in the advanced wastewater treatment, and therefore, the description is not repeated here. And the second oxygen buffer tank 55 of the tail gas recovery system 5 is connected with the oxygen supplementing pipeline through a pipeline, so that the oxygen-enriched gas in the second oxygen buffer tank 55 enters the oxygen supplementing pipeline, and further reaction gas is provided for the ozone generator 2.
After the wastewater advanced treatment system operates stably, the oxygen-enriched gas generated by the air separation oxygen generating equipment 1 supplies oxygen lost by the wastewater advanced treatment system to the ozone generator 2 through an oxygen supply pipeline.
Specifically, the stable operation of the wastewater advanced treatment system here means that the ozone amount charged by the ozone generator 2 toward the ozone oxidation reactor 3 and the wastewater amount in the ozone oxidation reactor 3 are adapted to each other. Namely, the oxygen-enriched gas prepared by the air separation oxygen-making equipment 1 just meets the oxygen consumption requirement of the ozone generator 2. At the moment, a first pipeline between the air separation oxygen production equipment 1 and the ozone generator 2 is closed, the ozone mixed gas generated by the ozone oxidation reactor 3 is destroyed by the ozone destructor 4 and then enters the tail gas recovery system 5, and the oxygen-enriched gas generated by the tail gas recovery system 5 through purification enters the ozone generator 2 through an oxygen supplementing pipeline. At this time, since a part of ozone, that is, a reaction gas consuming a part of ozone is reacted in the ozone oxidation reactor 3, the air separation oxygen generation plant 1 supplies the oxygen-enriched gas toward the oxygen supply line through the second line, thereby allowing the system to be smoothly performed.
Further optimally, when the wastewater advanced treatment system is started for the first time, the air separation oxygen generation equipment 1 is started in a grading way, so that the oxygen supply amount is gradually increased, and further, the ozone generation amount in the ozone generator 2 is gradually increased, so that the requirement of the wastewater advanced treatment system is met. After the whole wastewater advanced treatment system stably operates, the high-purity oxygen-enriched gas generated by the air separation oxygen generation equipment 1 is only used for supplementing 13 percent of O lost in the operation of the wastewater advanced treatment system2So as to maintain the stable operation of the whole advanced wastewater treatment system. Meanwhile, the oxygen generation amount of the air separation oxygen generation equipment 1 is reduced to 10-15% of the initial operation value of the wastewater deep treatment system, and the energy consumption of the air separation oxygen generation equipment 1 is reduced.
The part of the wastewater advanced treatment system in contact with ozone is made of stainless steel materials such as 304, 316 and 316L, and the sealing material is made of ozone-resistant materials such as ABS, CPVC and fluorosilicone rubber.
The total advanced treatment scale of a sewage treatment plant in a certain industrial park is 14 ten thousand meters3And d, treating the organic matters in the wastewater by adopting the processes of efficient precipitation, a V sand filter, chlorine dioxide disinfection, ozone contact oxidation and a pure oxygen aeration tank, wherein the effluent quality reaches the first-level A standard in pollutant discharge standards of urban sewage treatment plants.
Before entering the ozone contact oxidation pond, the COD of the water quality is 60mg/L, and the ozone adding amount is as follows: 40mg/L, ozone consumption: 14 ten thousand meters3D × 40 mg/L5600 kg/d; the ozone concentration is 10%; oxygen demand: 5600 kg/d/10% ═ 56000 kg/h. By adopting the wastewater advanced treatment method disclosed by the invention, 80% of oxygen can be recycled, and the oxygen content is as follows: 56000kg/h × 80% ═ kg/h; compared with the technology of preparing ozone by adopting a liquid oxygen tank and utilizing oxygen prepared by a vaporizer as a gas source, the technology can save a large amount of liquid oxygen cost.
The advanced wastewater treatment method greatly saves the cost of liquid oxygen required by ozone preparation, realizes the recycling of oxygen in ozone tail gas, is convenient for the industrial application of the ozone advanced oxidation technology and can save the operation cost of enterprises on the premise of ensuring the same oxidation degradation effect.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. An advanced wastewater treatment system, comprising:
the ozone preparation system comprises an air separation oxygen generation device (1) for preparing air into oxygen-enriched gas and an ozone generator (2) for preparing the oxygen-enriched gas into ozone mixed gas, wherein the air separation oxygen generation device (1) is communicated with the ozone generator (2) through a first pipeline;
an oxidation system comprising an ozone oxidation reactor (3) for degrading sewage by using the ozone mixed gas, and an ozone destructor (4) for destroying the oxidized ozone mixed gas;
tail gas recovery system (5) for purify the warp the tail gas mist that ozone destructor (4) produced, warp tail gas recovery system (5) purifies the oxygen-enriched gas that produces and enters into the oxygenating pipeline, the oxygenating pipeline with ozone generator (2) intercommunication, be equipped with on the air separation oxygenerator (1) be used for with the second pipeline of oxygenating pipeline intercommunication.
2. The advanced wastewater treatment system according to claim 1, wherein the air separation oxygen generation plant (1) comprises an air compressor, a first cold dryer, a first oil remover, a first adsorber and a first oxygen buffer tank which are connected in sequence, air forms oxygen-enriched gas through the air compressor, the first cold dryer, the first oil remover and the first adsorber and then enters the first oxygen buffer tank, and the first oxygen buffer tank is communicated with the first pipeline.
3. The advanced wastewater treatment system according to claim 1, wherein the tail gas recovery system (5) comprises an oxygen compressor (51), a second cold dryer (52), a second oil remover (53), a second adsorber (54) and a second oxygen buffer tank (55) which are connected in sequence, the tail gas mixture enters the second oxygen buffer tank (55) after forming oxygen-enriched gas through the oxygen compressor (51), the second cold dryer (52), the second oil remover (53) and the second adsorber (54), and the second oxygen buffer tank (55) is communicated with the oxygen supplementing pipeline.
4. The advanced wastewater treatment system according to claim 1, wherein the ozone oxidation reactor (3) is an oxidation tower, a contact oxidation tank or an oxidation reaction kettle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021141149.9U CN212425554U (en) | 2020-06-18 | 2020-06-18 | Advanced wastewater treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021141149.9U CN212425554U (en) | 2020-06-18 | 2020-06-18 | Advanced wastewater treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212425554U true CN212425554U (en) | 2021-01-29 |
Family
ID=74281661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021141149.9U Active CN212425554U (en) | 2020-06-18 | 2020-06-18 | Advanced wastewater treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212425554U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111646562A (en) * | 2020-06-18 | 2020-09-11 | 金科环境股份有限公司 | Advanced wastewater treatment system and treatment method |
| CN114735804A (en) * | 2022-03-22 | 2022-07-12 | 温州大学 | Waste water oxidation decoloration system |
-
2020
- 2020-06-18 CN CN202021141149.9U patent/CN212425554U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111646562A (en) * | 2020-06-18 | 2020-09-11 | 金科环境股份有限公司 | Advanced wastewater treatment system and treatment method |
| CN114735804A (en) * | 2022-03-22 | 2022-07-12 | 温州大学 | Waste water oxidation decoloration system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111646562A (en) | Advanced wastewater treatment system and treatment method | |
| US20130140232A1 (en) | Method and system for ozone vent gas reuse in wastewater treatment | |
| CN111377575B (en) | Treatment method of high-sulfate high-COD organic wastewater | |
| CN212425554U (en) | Advanced wastewater treatment system | |
| WO2011043144A1 (en) | Method and system for treating plant wastewater | |
| JPS5924672B2 (en) | water treatment method | |
| US4029574A (en) | Process and apparatus for the purification of organically contaminated sewage | |
| CN111330412B (en) | System and process for absorbing and purifying byproduct hydrogen chloride gas in chlorination section into acid | |
| CN111943408A (en) | Device and method for removing organic pollutants in water through electro-catalytic ozone adsorption membrane filtration | |
| Rosen | Use of ozone and oxygen in advanced wastewater treatment | |
| CN108383335B (en) | High-concentration organic wastewater treatment system and method | |
| CN101921041A (en) | Ozone production method and sewage treatment method | |
| JP2005125203A (en) | Organic waste water treatment apparatus | |
| CN109589971B (en) | By using C-MnO2Method for removing perfluorooctanoic acid in water by composite material | |
| CN203890199U (en) | Printing and dyeing wastewater treatment device | |
| CN112239264B (en) | Method for treating carbon-containing organic matters in waste brine | |
| EP1736444A4 (en) | Pressurized biological wastewater purification process | |
| CN201442895U (en) | Advanced oxidation emergency deep treatment water and disinfection and sterilization liquid preparing equipment | |
| CN209957454U (en) | Pure oxygen circulation system ozone sewage treatment device | |
| CN112979095A (en) | Treatment method for hydrazine hydrate wastewater synthesized by ketazine method | |
| CN210313790U (en) | Ammonia nitrogen oxidation and nitrate nitrogen reduction integrated denitrification device for water body | |
| CN105948331A (en) | Water purification system | |
| JP2010042331A (en) | Ballast water treatment apparatus loaded with an ozone producing device using pressure swing adsorption method | |
| CN1066128C (en) | Deep purifying and reclaiming appts. and method for industrial organic sewage | |
| CN115385520B (en) | Urban sewage treatment method for efficiently recycling ammonia |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |