CN215627271U - Device for treating high-concentration COD wastewater by ozone - Google Patents
Device for treating high-concentration COD wastewater by ozone Download PDFInfo
- Publication number
- CN215627271U CN215627271U CN202121999528.6U CN202121999528U CN215627271U CN 215627271 U CN215627271 U CN 215627271U CN 202121999528 U CN202121999528 U CN 202121999528U CN 215627271 U CN215627271 U CN 215627271U
- Authority
- CN
- China
- Prior art keywords
- ozone
- valve
- wastewater
- concentration cod
- mixing device
- 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
Images
Abstract
The utility model discloses a device for treating high-concentration COD wastewater by ozone, which comprises a filtering device (1), a mixing device (2) and an oxidation tower (3) which are sequentially connected through pipelines; the filtering device (1) is connected with a water inlet pipe (6) for high-concentration COD wastewater; the oxidation tower (3) is connected with a water outlet pipe (7); the ozone mixing device is characterized by further comprising an ozone generator (4) and an ozone pipe (5), wherein two ends of the ozone pipe (5) are respectively connected with the ozone generator (4) and the mixing device (2). In the process of treating the wastewater, ozone enters the mixing device (2) through the ozone pipe (5) to be fully mixed with the high-concentration COD wastewater, then enters the oxidation tower (3) through the pipeline, and directly adds the catalyst after entering the oxidation tower (3) to help the ozone oxidation, thereby reducing the treatment cost of the high-concentration COD wastewater; and the salt content in the effluent cannot be increased, and the problem of overhigh conductivity of the effluent is also avoided.
Description
Technical Field
The utility model relates to the field of wastewater treatment, in particular to a device for treating high-concentration COD wastewater by ozone.
Background
Ozone is an unstable, bluish gas with a particularly pungent odor at ambient temperature and pressure. Ozone has strong oxidation performance, has an oxidation potential of 2.07V in alkaline solution, and has the oxidation capacity second to fluorine and higher than chlorine and potassium permanganate. Based on the strong oxidizing property of ozone, the water can be automatically decomposed in a short time without secondary pollution, and the ozone is an ideal green oxidizing agent. Therefore, the ozone oxidation method has been gradually developed into an advanced oxidation technology, and the ozone technology has been applied in many aspects in the field of water treatment. The ozone is mainly used for deodorization, decoloration, sterilization and removal of organic matters in the water treatment process.
In the existing ozone wastewater treatment method, alkali liquor is needed to be used for regulating the acidity and the alkalinity of acid wastewater, sulfuric acid is needed to be used for regulating the acidity and the alkalinity of alkaline wastewater, the consumption of acid and/or alkali is high, and the wastewater treatment cost is high; in addition, the pH value is adjusted by adding acid/alkali, salt is generated, the salt content in the effluent is increased, and the problem of overhigh conductivity of the effluent is solved.
The applicant has found that the prior art has at least the following technical problems:
1. the ozone wastewater treatment device in the prior art is suitable for a wastewater treatment process needing to add acid/alkali to adjust the pH value, alkali liquor is needed to adjust the acid-base property of acid wastewater, sulfuric acid is needed to adjust the acid-base property of alkaline wastewater, the consumption of acid and/or alkali is high, and the wastewater treatment cost is high;
2. the ozone wastewater treatment device in the prior art is suitable for a wastewater treatment process needing to add acid/alkali to adjust the pH value, and salt is generated after the acid/alkali is added, so that the salt content in the effluent is increased, and the problem of overhigh conductivity of the effluent exists.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a device for treating high-concentration COD wastewater by ozone, which aims to solve the technical problems that the ozone wastewater treatment device in the prior art is suitable for a wastewater treatment process needing to add acid/alkali to adjust the pH value, salt is generated after the acid/alkali is added, the salt content in effluent is increased, and the conductivity of the effluent is overhigh.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a device for treating high-concentration COD wastewater by ozone, which comprises a filtering device, a mixing device and an oxidation tower which are sequentially connected through pipelines; wherein the content of the first and second substances,
the filtering device is connected with a water inlet pipe for high-concentration COD wastewater;
the oxidation tower is connected with a water outlet pipe;
the ozone generator and the mixing device are connected with the ozone generator and the mixing device respectively.
Optionally or preferably, a first valve and a second valve are respectively arranged on a pipeline between the filtering device and the mixing device and a pipeline between the mixing device and the oxidation tower; a third valve is arranged on the water inlet pipe; a fourth valve is arranged on the water outlet pipe; and a fifth valve is arranged on the ozone pipe.
Optionally or preferably, the system further comprises a control device, wherein the first valve, the second valve, the third valve, the fourth valve and the fifth valve are all electromagnetic valves; and the control device is electrically connected with the mixing device, the oxidation tower, the first valve, the second valve, the third valve, the fourth valve and the fifth valve respectively.
Optionally or preferably, a liquid flowmeter is arranged on a pipeline between the filtering device and the mixing device, and a gas flowmeter is arranged on a pipeline between the ozone generator and the mixing device; the liquid flowmeter and the gas flowmeter are respectively electrically connected with the control device.
Alternatively or preferably, the control device is a PLC control cabinet.
Alternatively or preferably, the filter device is a bag filter.
Alternatively or preferably, the mixing device is a high efficiency mixer.
The method for treating the high-concentration COD wastewater by using the device for treating the high-concentration COD wastewater by using the ozone comprises the following steps:
(1) filtering solid slag, suspended matters and other impurities in the high-concentration COD wastewater to be treated by using a filtering device, then sending the high-concentration COD wastewater subjected to impurity removal into a mixing device through a pipeline, and metering the volume of the high-concentration COD wastewater entering the mixing device by using a liquid flowmeter;
(2) ozone generated by the ozone generator is sent into the mixing device through the ozone pipe, and the gas flowmeter measures the volume of the ozone entering the mixing device; controlling the volume ratio of the high-concentration COD wastewater to the ozone to be 1:10-1000 by a control device, and uniformly mixing the high-concentration COD wastewater and the ozone;
(3) adding the uniformly mixed high-concentration COD wastewater and ozone into an oxidation tower, wherein a catalyst is added into the oxidation tower, and the addition amount of the catalyst is 75-85% of the effective volume of an ozone catalytic oxidation reactor;
when the pH value of the high-concentration COD wastewater is less than 7, the added catalyst is a titanium compound catalyst and/or an iron compound catalyst; when the pH value of the high-concentration COD wastewater is more than or equal to 7, the added catalyst is a silicon-aluminum compound catalyst and/or a manganese compound catalyst;
the titanium compound catalyst is titanium oxide, titanium sulfate or titanium chloride;
the iron compound catalyst is zero-valent iron, ferrous sulfate or ferric oxalate;
the silicon-aluminum compound catalyst is silicon-aluminum composite salt or aluminum oxide;
the manganese compound catalyst is manganese dioxide, potassium permanganate or manganese sulfate;
(4) and carrying out catalytic oxidation by ozone at normal temperature and normal pressure to obtain treated wastewater.
The ozone oxidation principle is as follows:
ozone exhibits strong oxidizing property because oxygen atoms in ozone molecules have strong electrophilic or nucleophilic properties, nascent oxygen atoms generated by ozone decomposition, and hydroxyl radical OH having strong oxidizing effect are formed in water, and their high activity is used for sterilization, disinfection, destruction of organic structures, etc. in water treatment, and its by-products are non-toxic, and basically have no secondary pollution, and have many advantages that other oxidants cannot match, and not only can sterilize, but also can oxidatively decompose pollutants in water.
Based on the technical scheme, the embodiment of the utility model can at least produce the following technical effects:
according to the device for treating high-concentration COD wastewater by using ozone, provided by the utility model, in the wastewater treatment process, ozone generated by an ozone generator enters a mixing device through an ozone pipe to be fully mixed with high-concentration COD wastewater, then enters an oxidation tower through a pipeline, and is directly added with a catalyst after entering the oxidation tower, and the addition of the catalyst can help ozone oxidation; different from other ozone treatment methods, when the device of the utility model is applied to the treatment of high-concentration COD wastewater, alkali liquor is not needed to be used for regulating the acidity and the alkalinity of the acid wastewater, and sulfuric acid is not needed to be used for regulating the acidity and the alkalinity of the alkaline wastewater, so that the consumption of acid and/or alkali is greatly reduced, and the treatment cost of the high-concentration COD wastewater is reduced; and therefore, the salt content in the effluent cannot be increased, and the problem of overhigh conductivity of the effluent is also avoided.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of the present invention.
In the figure: 1. a filtration device; 2. a mixing device; 3. an oxidation tower; 4. an ozone generator; 5. an ozone tube; 6. a water inlet pipe; 7. a water outlet pipe; 8. a first valve; 9. a second valve; 10. a third valve; 11. a fourth valve; 12. a fifth valve; 13. a liquid flow meter; 14. a gas flow meter.
Detailed Description
First, an embodiment
Example 1:
the utility model provides a device for treating high-concentration COD wastewater by ozone, which comprises a filtering device 1, a mixing device 2 and an oxidation tower 3 which are sequentially connected through pipelines; wherein the content of the first and second substances,
the filtering device 1 is connected with a water inlet pipe 6 of high-concentration COD wastewater;
the oxidation tower 3 is connected with a water outlet pipe 7;
the ozone mixing device further comprises an ozone generator 4 and an ozone tube 5, wherein two ends of the ozone tube 5 are respectively connected with the ozone generator 4 and the mixing device 2.
According to the device for treating high-concentration COD wastewater by using ozone, provided by the utility model, in the wastewater treatment process, ozone generated by an ozone generator 4 enters a mixing device 2 through an ozone pipe 5 to be fully mixed with the high-concentration COD wastewater, then enters an oxidation tower 3 through a pipeline, and is directly added with a catalyst after entering the oxidation tower 3, wherein the catalyst can be added to assist in carrying out ozone oxidation; different from other ozone treatment methods, when the device of the utility model is applied to the treatment of high-concentration COD wastewater, alkali liquor is not needed to be used for regulating the acidity and the alkalinity of the acid wastewater, and sulfuric acid is not needed to be used for regulating the acidity and the alkalinity of the alkaline wastewater, so that the consumption of acid and/or alkali is greatly reduced, and the treatment cost of the high-concentration COD wastewater is reduced; and therefore, the salt content in the effluent cannot be increased, and the problem of overhigh conductivity of the effluent is also avoided.
As an optional embodiment, a first valve 8 and a second valve 9 are respectively arranged on a pipeline between the filtering device 1 and the mixing device 2 and a pipeline between the mixing device 2 and the oxidation tower 3; a third valve 10 is arranged on the water inlet pipe 6; a fourth valve 11 is arranged on the water outlet pipe 7; and a valve five 12 is arranged on the ozone pipe 5.
As an optional implementation mode, the system further comprises a control device, wherein the first valve 8, the second valve 9, the third valve 10, the fourth valve 11 and the fifth valve 12 are all electromagnetic valves; the control device is respectively and electrically connected with the mixing device 2, the oxidation tower 3, the first valve 8, the second valve 9, the third valve 10, the fourth valve 11 and the fifth valve 12.
As an optional embodiment, optionally or preferably, a liquid flowmeter 13 is arranged on a pipeline between the filtering device 1 and the mixing device 2, and a gas flowmeter 14 is arranged on a pipeline between the ozone generator 4 and the mixing device 2; the liquid flowmeter 13 and the gas flowmeter 14 are respectively electrically connected with the control device.
As an alternative embodiment, the control device is a PLC control cabinet.
As an alternative embodiment, the filter device 1 is a bag filter.
As an alternative embodiment, the mixing device 2 is a high-efficiency mixer.
Second, application example
Application example 1:
the method for treating high concentration COD wastewater by using the device for treating high concentration COD wastewater by using ozone in the embodiment 1 comprises the following steps:
(1) filtering solid slag, suspended matters and other impurities in high-concentration COD wastewater (the COD concentration is 100g/L and the pH value is 3) to be treated by using a filtering device 1, then sending the high-concentration COD wastewater after impurity removal into a mixing device 2 through a pipeline, and metering the volume of the high-concentration COD wastewater entering the mixing device 2 by using a liquid flowmeter 13;
(2) ozone generated by the ozone generator 4 is sent into the mixing device 2 through the ozone pipe 5, and the gas flowmeter 14 meters the volume of the ozone entering the mixing device 2; controlling the volume ratio of the high-concentration COD wastewater to the ozone to be 1:25 by a control device, and uniformly mixing the high-concentration COD wastewater and the ozone;
(3) adding the uniformly mixed high-concentration COD wastewater and ozone into an oxidation tower 3, and adding a catalyst into the oxidation tower 3; in this embodiment, the added catalyst is a titanium compound catalyst, specifically selected is titanium oxide; the adding amount of the catalyst is 80 percent of the effective volume of the ozone catalytic oxidation reactor;
(4) carrying out catalytic ozonation for 1h at normal temperature and normal pressure to obtain treated wastewater, wherein the COD, the salt content and the conductivity of the treated wastewater are shown in Table 1.
Application example 2:
the method for treating high concentration COD wastewater by using the device for treating high concentration COD wastewater by using ozone in the embodiment 1 comprises the following steps:
(1) filtering solid slag, suspended matters and other impurities in high-concentration COD wastewater (the COD concentration is 120g/L and the pH is 7) to be treated by using a filtering device 1, then sending the high-concentration COD wastewater after impurity removal into a mixing device 2 through a pipeline, and metering the volume of the high-concentration COD wastewater entering the mixing device 2 by using a liquid flowmeter 13;
(2) ozone generated by the ozone generator 4 is sent into the mixing device 2 through the ozone pipe 5, and the gas flowmeter 14 meters the volume of the ozone entering the mixing device 2; controlling the volume ratio of the high-concentration COD wastewater to the ozone to be 1:30 by a control device, and uniformly mixing the high-concentration COD wastewater and the ozone;
(3) adding the uniformly mixed high-concentration COD wastewater and ozone into an oxidation tower 3, and adding a catalyst into the oxidation tower 3; in this embodiment, the added catalyst is a silicon-aluminum compound catalyst, specifically, a silicon-aluminum composite salt is selected; the adding amount of the catalyst is 77 percent of the effective volume of the ozone catalytic oxidation reactor;
(4) carrying out catalytic ozonation for 1h at normal temperature and normal pressure to obtain treated wastewater, wherein the COD, the salt content and the conductivity of the treated wastewater are shown in Table 1.
Application example 3:
the method for treating high concentration COD wastewater by using the device for treating high concentration COD wastewater by using ozone in the embodiment 1 comprises the following steps:
(1) filtering solid slag, suspended matters and other impurities in high-concentration COD wastewater (the COD concentration is 50g/L and the pH value is 11) to be treated by using a filtering device 1, then sending the high-concentration COD wastewater after impurity removal into a mixing device 2 through a pipeline, and metering the volume of the high-concentration COD wastewater entering the mixing device 2 by using a liquid flowmeter 13;
(2) ozone generated by the ozone generator 4 is sent into the mixing device 2 through the ozone pipe 5, and the gas flowmeter 14 meters the volume of the ozone entering the mixing device 2; controlling the volume ratio of the high-concentration COD wastewater to the ozone to be 1:25 by a control device, and uniformly mixing the high-concentration COD wastewater and the ozone;
(3) adding the uniformly mixed high-concentration COD wastewater and ozone into an oxidation tower 3, and adding a catalyst into the oxidation tower 3; in this embodiment, the added catalyst is a manganese compound catalyst, specifically, manganese sulfate is selected; the adding amount of the catalyst is 80 percent of the effective volume of the ozone catalytic oxidation reactor;
(4) carrying out catalytic ozonation for 1h at normal temperature and normal pressure to obtain treated wastewater, wherein the COD, the salt content and the conductivity of the treated wastewater are shown in Table 1.
Thirdly, comparison example:
comparative example 1:
(1) filtering impurities such as solid slag, suspended matters and the like in high-concentration COD wastewater to be treated (the COD concentration is 100g/L and the pH is 3) by adopting a bag filter;
(2) adjusting the pH of the high-concentration COD wastewater after impurity removal, wherein the adjusted pH is 9;
(3) introducing ozone into the high-concentration COD wastewater, wherein the volume ratio of the high-concentration COD wastewater to the ozone is 1: 25;
(4) carrying out catalytic ozonation for 1h at normal temperature and normal pressure to obtain treated wastewater, wherein the COD, the salt content and the conductivity of the treated wastewater are shown in Table 1.
Comparative example 2:
(1) filtering impurities such as solid slag, suspended matters and the like in high-concentration COD wastewater to be treated (the COD concentration is 120g/L and the pH is 7) by using a bag filter;
(2) adjusting the pH of the high-concentration COD wastewater after impurity removal, wherein the adjusted pH is 9;
(3) introducing ozone into the high-concentration COD wastewater; the volume ratio of the high-concentration COD wastewater to the ozone is 1: 30.
(4) Carrying out catalytic ozonation for 1h at normal temperature and normal pressure to obtain treated wastewater, wherein the COD, the salt content and the conductivity of the treated wastewater are shown in Table 1.
Third, comparing the salt content and conductivity of the treated high COD wastewater in the application example and the comparative example:
the parameters of wastewater treatment and the treatment results in application examples 1 to 3 and comparative examples 1 to 2 are shown in the following Table 1:
TABLE 1 examples and comparative examples wastewater treatment parameters and results
As can be seen from table 1, in application examples 1 to 3 of the present invention, by adding a catalyst to high COD wastewater, catalytic ozonation can be directly performed, and compared with conventional catalytic ozonation after pH adjustment, the catalytic ozonation has low salt content and low conductivity, which facilitates subsequent wastewater treatment.
Claims (7)
1. The utility model provides a device of ozone treatment high concentration COD waste water which characterized in that: comprises a filtering device (1), a mixing device (2) and an oxidation tower (3) which are connected in sequence through pipelines; wherein the content of the first and second substances,
the filtering device (1) is connected with a water inlet pipe (6) for high-concentration COD wastewater;
the oxidation tower (3) is connected with a water outlet pipe (7);
the ozone mixing device is characterized by further comprising an ozone generator (4) and an ozone pipe (5), wherein two ends of the ozone pipe (5) are respectively connected with the ozone generator (4) and the mixing device (2).
2. The apparatus for treating high concentration COD waste water with ozone according to claim 1, wherein: a first valve (8) and a second valve (9) are respectively arranged on a pipeline between the filtering device (1) and the mixing device (2) and a pipeline between the mixing device (2) and the oxidation tower (3); a third valve (10) is arranged on the water inlet pipe (6); a fourth valve (11) is arranged on the water outlet pipe (7); and a fifth valve (12) is arranged on the ozone pipe (5).
3. The apparatus for treating high concentration COD waste water with ozone according to claim 2, wherein: the device also comprises a control device, wherein the first valve (8), the second valve (9), the third valve (10), the fourth valve (11) and the fifth valve (12) are all electromagnetic valves; the control device is electrically connected with the mixing device (2), the oxidation tower (3), the valve I (8), the valve II (9), the valve III (10), the valve IV (11) and the valve V (12) respectively.
4. The apparatus for treating high concentration COD waste water with ozone according to claim 3, wherein: a liquid flowmeter (13) is arranged on a pipeline between the filtering device (1) and the mixing device (2), and a gas flowmeter (14) is arranged on a pipeline between the ozone generator (4) and the mixing device (2); the liquid flowmeter (13) and the gas flowmeter (14) are respectively electrically connected with the control device.
5. The apparatus for treating high concentration COD waste water with ozone according to claim 3, wherein: the control device is a PLC control cabinet.
6. The apparatus for treating high concentration COD waste water with ozone according to any one of claims 1 to 5, wherein: the filtering device (1) is a bag filter.
7. The apparatus for treating high concentration COD waste water with ozone according to any one of claims 1 to 5, wherein: the mixing device (2) is a high-efficiency mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121999528.6U CN215627271U (en) | 2021-08-24 | 2021-08-24 | Device for treating high-concentration COD wastewater by ozone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121999528.6U CN215627271U (en) | 2021-08-24 | 2021-08-24 | Device for treating high-concentration COD wastewater by ozone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215627271U true CN215627271U (en) | 2022-01-25 |
Family
ID=79901364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121999528.6U Active CN215627271U (en) | 2021-08-24 | 2021-08-24 | Device for treating high-concentration COD wastewater by ozone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215627271U (en) |
-
2021
- 2021-08-24 CN CN202121999528.6U patent/CN215627271U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103991987B (en) | A kind of pretreatment high phosphorus waste water removes technique and the process system thereof of total phosphorus | |
| WO2014083903A1 (en) | System for treating coal gasification wastewater, and method for treating coal gasification wastewater | |
| Su et al. | Removal of monoethanolamine and phosphate from thin-film transistor liquid crystal display (TFT-LCD) wastewater by the fluidized-bed Fenton process | |
| CN104961304A (en) | High-concentration fluorine chemical wastewater treatment technology | |
| CN111470679A (en) | Pretreatment method of waste emulsion | |
| Zhang et al. | Treatment of ammonia‑nitrogen wastewater by the ultrasonic strengthened break point chlorination method | |
| CN104402140A (en) | Method and apparatus for removal of earthy-musty smelly substances from water | |
| CN105502739A (en) | Method for synchronous complex breaking and heavy metal removal based on self-strengthening ozone | |
| CN104817215A (en) | Ozone photocatalysis advanced wastewater treatment technology and treatment equipment | |
| CN105502757A (en) | Industrial treatment method of high-concentration arsenic-containing wastewater | |
| CN101717146B (en) | Method for treating catalytic ozone oxidation water | |
| CN114920400A (en) | Treatment process method and system for preparing ultrapure water from urban reclaimed water | |
| CN205442755U (en) | A fragrant iron ion follows device that ring method handled organic waste water | |
| Chaohui et al. | Remove of ammoniacal nitrogen wastewater by ultrasound/Mg/Al2O3/O3 | |
| CN104787933B (en) | Treatment method for gold-smelting cyanide-containing wastewater | |
| CN109437447A (en) | A kind of preprocess method of guanine waste water | |
| CN213060470U (en) | Sulfuric acid process titanium dioxide effluent treatment plant | |
| CN109019999A (en) | A kind of processing method of the low concentration containing strong complexing nickel waste water | |
| CN111470671B (en) | Method for treating arsenic-containing organic wastewater | |
| CN215627271U (en) | Device for treating high-concentration COD wastewater by ozone | |
| CN112551744A (en) | Method for treating wastewater by utilizing acidic coagulated Fenton oxidation | |
| CN111875129A (en) | Combined treatment process for organophosphorus wastewater with high total phosphorus concentration | |
| CN106630312B (en) | Treatment system, treatment method and application of coking phenol-cyanogen wastewater | |
| CN110092498A (en) | A kind of Fenton oxidation processing method of waste water | |
| CN115594346A (en) | Method for treating debugging wastewater in nuclear power construction phase |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |