CN218561252U - Multi-source green advanced oxidation coupling reaction device based on ozone catalytic oxidation - Google Patents
Multi-source green advanced oxidation coupling reaction device based on ozone catalytic oxidation Download PDFInfo
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- CN218561252U CN218561252U CN202223157465.7U CN202223157465U CN218561252U CN 218561252 U CN218561252 U CN 218561252U CN 202223157465 U CN202223157465 U CN 202223157465U CN 218561252 U CN218561252 U CN 218561252U
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Abstract
The utility model relates to the technical field of sewage treatment, in particular to a multisource green advanced oxidation coupling reaction device based on ozone catalytic oxidation, which comprises a reaction tank, a water inlet, a water outlet, a circulating water inlet, a circulating water outlet, a circulating pump, a jet flow water inlet, a dosing port and an electrode socket, wherein the water inlet is arranged at the lower part of the reaction tank, and the water outlet is arranged at the upper part of the reaction tank; the circulating water inlet is arranged at the upper part of the reaction tank and is connected with the inlet of the circulating pump through a pipeline, and the circulating water outlet is arranged at the lower part of the reaction tank and is connected with the outlet of the circulating pump through a pipeline; the jet flow water inlet is arranged at the lower part of the reaction tank and is connected with an ozone gas outlet pipeline of the ozone generator through a pipeline; a medicine feeding port is arranged on the reaction tank above the water inlet, and a pair of electrode sockets are arranged on the reaction tank above the medicine feeding port. The reaction tank is provided with a structure for simultaneously carrying out a plurality of oxidation modes, so that the deep removal of organic pollutants in the wastewater is enhanced.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, concretely relates to green advanced oxidation coupling reaction unit of multisource based on ozone catalytic oxidation.
Background
The wastewater of industrial parks in the important industries such as chemical industry, printing and dyeing and the like has the characteristics of high salinity, a plurality of toxic and harmful pollutants and strong impact, the wastewater treatment station has the problems of biological efficiency inhibition, high oxidation efficiency stagnation and difficult standard reaching stability, the existing wastewater treatment technology has high cost, is unstable and large in risk and cannot meet the increasingly-improved environmental protection requirement.
Advanced oxidation is an effective mainstream advanced treatment method for treating refractory industrial wastewater. The technology is characterized in that hydroxyl free radicals (. OH) with strong oxidation capacity are generated, and under the reaction conditions of high temperature, high pressure, electricity, light, catalysts and the like, macromolecular refractory organic matters are oxidized into low-toxicity or non-toxic micromolecular substances. Depending on the manner of generating radicals and the reaction conditions, it can be classified into fenton oxidation, electrochemical oxidation, ozone oxidation, photochemical oxidation, and the like.
In the aspect of Fenton oxidation, the method has been applied to destroy the structure of toxic organic matters in the last 60 years, and is a few advanced oxidation technologies which are applied to large-scale industrialization so far. Compared with other advanced oxidation methods, fenton oxidation has the characteristics of simple operation, low investment cost and stable oxidation effect. At the same time, the fenton oxidation technique also has drawbacks. Firstly, the Fenton oxidation reaction has strict requirements on the pH of the solution, generally about 3-5, but most biochemical systems are carried out under neutral conditions, so that a lime milk coagulation sedimentation tank is generally added after Fenton oxidation to adjust the pH, and the investment cost is increased. With the popularization of the Fenton oxidation technology, more researches show that the COD removal rate of the wastewater is limited only by the traditional chemical Fenton oxidation, and the oxidation efficiency is reduced sharply mainly because Fe (III) oxidized by Fenton is oxidized with organic pollutants to generate Fe-organic acid complex, the reduction speed is slow, and the further Fenton oxidation is difficult.
The electrochemical oxidation technology has become a research hotspot for deeply reducing the organic pollutants in the industrial wastewater due to the advantages of no secondary pollution, simple operation, high removal efficiency aiming at the pollutants difficult to degrade, and the like. Research shows that the electrochemical oxidation method can still realize higher removal efficiency aiming at actual wastewater with complex water quality, but inevitably needs higher electric energy consumption.
In the aspect of ozone oxidation, ozone can be automatically reduced into oxygen at normal temperature, and has strong oxidizing capability. There are two reaction pathways for ozone and organic pollutants: direct reaction-ozone molecules directly oxidize organic pollutants; free radical reaction-the hydroxyl free radicals produced by ozonolysis degrade organic pollutants. Pure ozone oxidation has selectivity, and the treatment effect on some unsaturated organic matters and aromatic compounds is good, but the organic matters are difficult to be completely mineralized, and meanwhile, the treatment effect on some organic matters such as small molecular fatty acid and the like is poor. At present, the most industrial application is the ozone catalytic fixed bed reaction device carrying the heterogeneous metal doped catalyst, the removal efficiency of the organic pollutants by ozone oxidation is improved under the combined action of direct reaction and free radical reaction, but the fixed bed catalyst is easily combined with organic matters and salts in water due to high-concentration COD and high salt content of industrial wastewater, so that hardening inactivation is caused, and the oxidation efficiency is influenced. In addition, generally, an oxygen source is adopted to obtain higher ozone concentration, and because the ozone is difficult to completely react, the treated tail gas still has ozone with certain concentration, so that the ozone waste is caused, and the running cost is increased.
In conclusion, through the current analysis of the single use of ozone oxidation, fenton oxidation and electrochemical oxidation, three technologies are effective methods for treating organic pollutants in industrial wastewater, but have respective defects.
SUMMERY OF THE UTILITY MODEL
The utility model provides a green senior oxidation coupling reaction unit of multisource based on ozone catalytic oxidation for industrial waste water high efficiency processing, in order to solve prior art, when adopting single ozone oxidation, ozone is thrown the volume of adding greatly, and fixed bed catalyst is thrown the volume and is easily hardened greatly, gets rid of inefficiency to the selectivity of target pollutant, and the high scheduling problem of process running cost.
The application provides a multi-source ozone catalytic oxidation coupling reaction device, which comprises a reaction tank, a water inlet, a water outlet, a circulating water inlet, a circulating water outlet, a circulating pump, a jet flow water inlet, a dosing port and an electrode socket, wherein the water inlet is arranged at the lower part of the reaction tank, and the water outlet is arranged at the upper part of the reaction tank; the circulating water inlet is arranged at the upper part of the reaction tank and is connected with the inlet of the circulating pump through a pipeline, and the circulating water outlet is arranged at the lower part of the reaction tank and is connected with the outlet of the circulating pump through a pipeline; the jet flow water inlet is arranged at the lower part of the reaction tank and is connected with the ozone generator through a pipeline; the relative positions of the jet flow water inlet, the circulating water outlet and the water inlet at the lower part of the reaction tank are sequentially from bottom to top; the relative positions of the circulating water inlet and the circulating water outlet on the upper part of the reaction tank are a circulating water inlet and a circulating water outlet from bottom to top in sequence; a dosing port is arranged on the reaction tank above the water inlet, and paired electrode sockets are arranged on the reaction tank above the dosing port.
Furthermore, the pipeline connected with the circulating water inlet, the circulating water outlet and the jet flow water inlet extends into the reaction tank, and the pipeline inside the reaction tank is a perforated coil pipe.
Furthermore, the pipeline connected with the jet flow water inlet extends to the part in the reaction tank, and a titanium disc aeration head or a rotational flow aeration head is connected at the perforated hole.
Furthermore, a multi-phase flow pump is connected to a pipeline between the jet flow water inlet and the ozone generator, the ozone generator is connected to the inlet side of the multi-phase flow pump, and meanwhile, one path of the inlet of the multi-phase flow pump is connected to an outlet pipeline of the circulating pump.
Further, the height of retort is more than 5 meters and be less than 10 meters, it has two to add the medicine mouth, arranges along the vertical direction, is a medicine mouth, no. two medicine mouths respectively from bottom to top, and two medicine mouth intervals are not less than 3 meters, mated electrode socket is a pair of, arranges along the vertical direction, is an electrode socket, no. two electrode sockets respectively from bottom to top, and an electrode socket arranges in No. two medicine mouth top 1-2m departments, and No. two electrode sockets arrange in an electrode socket top 0.1-0.5m department.
Further, the height of retort is more than 10 meters and be less than 15 meters, it has threely to add the medicine mouth, arranges along the vertical direction, is a medicine mouth, no. two medicine mouths, no. three medicine mouths respectively from bottom to top, and a medicine mouth and No. two medicine mouths 'interval is not less than 3 meters, and No. two medicine mouths and No. three medicine mouths' interval is not less than 4 meters, mated electrode socket is two pairs, arranges along the vertical direction, is an electrode socket, no. two electrode sockets, no. three electrode socket, no. four electrode sockets respectively from bottom to top, and wherein an electrode socket arranges in No. two medicine mouths top 1-2m department, and No. three electrode socket arranges in No. three medicine mouths top 0.5-1m department, and the interval between an electrode socket and No. two electrode sockets is 0.1-0.5m, and the interval between No. three electrode socket and the No. four electrode socket is 0.1-0.5m.
Further, the height of the reaction tank exceeds 15 meters, four medicine adding openings are arranged along the vertical direction, the distance between the first medicine adding opening and the second medicine adding opening is not less than 3 meters from bottom to top, the distance between the second medicine adding opening and the third medicine adding opening is not less than 4 meters, the distance between the third medicine adding opening and the fourth medicine adding opening is not less than 4.5 meters, the paired electrode sockets are three pairs and are respectively a first electrode socket, a second electrode socket, a third electrode socket, a fourth electrode socket, a fifth electrode socket and a sixth electrode socket from bottom to top, wherein the first electrode socket is arranged at a position 1-2m above the second medicine adding opening, the third electrode socket is arranged at a position 0.5-1m above the third medicine adding opening, the fifth electrode is arranged at a position 0.5-1m above the fourth medicine adding opening, the distance between the first electrode socket and the second electrode socket is 0.5-1m, the distance between the third electrode socket and the sixth electrode socket is between the fifth electrode socket, the electrode socket is between the fifth electrode socket and the electrode socket, and the distance between the fifth electrode socket is 0.5-1m, the electrode socket is between the electrode socket and the electrode socket, and the electrode socket are 0.5-1.5-1 m.
The utility model has the advantages that: 1. the reaction tank is provided with a structure for simultaneously carrying out a plurality of oxidation modes, so that the deep removal of organic pollutants in the wastewater is enhanced.
2. The utility model uses the perforated coil pipe, so that the water collection and distribution are more uniform; the distribution is more uniform when ozone is oxidized.
3. The multi-point dosing structure is designed, and the removal effect of the multi-source ozone catalytic oxidation coupling degradation organic pollutants is enhanced.
Drawings
Fig. 1 is a diagram of the structure of the device of the present invention.
Wherein the reference numbers: 1 water inlet, 2 delivery ports, 3 circulation delivery ports, 4 circulation water inlets, no. 5 add medicine mouthful, no. 6 add medicine mouthful No. two, no. 7 electrode socket, no. 8 electrode socket, 9 efflux water inlets, 10 evacuation mouth, 11 manholes one, 12 discharge openings, 13 manholes two, 14 tail gas outlet, 15 positive negative pressure balance mouth.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, for the structure diagram of an embodiment of the utility model, the main part is a retort, has arranged water inlet 1 on the retort body, delivery port 2, circulation delivery port 3, circulation water inlet 4, a dosing port 5, no. two dosing ports 6, an electrode socket 7, no. two electrode sockets 8, efflux water inlet 9, evacuation mouth 10, manhole one 11, discharge opening 12, manhole two 13, exhaust outlet 14, positive negative pressure balance mouth 15.
The main body of the utility model is a reaction tank, wherein a water inlet 1 is arranged at the lower part of the reaction tank and is used as an inlet for wastewater to be treated to enter the reaction tank, and a water outlet 2 is arranged at the upper part of the reaction tank and is used as a discharge port for the treated wastewater; the functions of the evacuation port 10, the manhole I11, the discharge port 12, the manhole II 13, the tail gas outlet 14 and the positive and negative pressure balance port 15 are all conventional designs, and the arrangement positions belong to the prior art and are not described herein again. The remaining technical features are described in detail below.
The circulating water outlet 3 and the circulating water inlet 4 are respectively arranged at the lower part and the upper part of the reaction tank, wherein the circulating water outlet 3 and the circulating water inlet 4 adopt perforated coil pipes in pipelines in the reaction tank; the pipeline of the circulating water outlet 3 and the circulating water inlet 4 outside the reaction tank is connected by a circulating pump, and the perforated coil pipe has the advantages that the pipeline of the circulating water outlet 3 in the reaction tank can uniformly distribute water along the cross section of the reaction tank, so that dead zones are avoided, the pipeline of the circulating water inlet 4 in the reaction tank can uniformly collect water along the cross section of the reaction tank, and the circulating efficiency is improved.
The device is characterized in that the jet water inlet 9 is arranged at the lower part of the reaction tank, a pipeline in the reaction tank is also a perforated coil pipe, a titanium plate aeration head or a rotational flow aeration head can be selectively connected to the perforated part, the pipeline of the jet water inlet 9 outside the reaction tank is connected with an outlet of a multiphase flow pump, the inlet of the multiphase flow pump is provided with two paths, one path is connected with an ozone generator, the other path is connected with an outlet pipeline of a circulating pump, ozone from the ozone generator is mixed with liquid from the outlet of the circulating pump in the inlet pipeline of the multiphase flow pump, the mixed ozone is pumped into the reaction tank through the high-flow pressure of the multiphase flow pump, ozone gas is dispersed into micro-nano bubbles by high pressure, the solubility of the ozone gas in water is improved after the ozone gas is mixed with the liquid, and the ozone oxidation efficiency is further improved.
The first medicine adding port 5 and the second medicine adding port 6Arranged at the lower part of the reaction tank for feeding H 2 O 2 、FeSO 4 The types of the added medicaments are selected according to the COD of the raw water and the component concentration of the pollutants difficult to degrade. When the proportion of the components of the pollutants difficult to degrade in the COD exceeds 50 percent, H is added simultaneously 2 O 2 And FeSO 4 (ii) a When the proportion of the components of the pollutants difficult to degrade in the COD is less than 50 percent, only H is added 2 O 2 。
The dosing mode is multipoint dosing, a plurality of dosing ports can be arranged according to the height of the reaction tank, when the height of the reaction tank is 5-10 m, 2 dosing ports are arranged in the vertical direction, the distance between the 2 dosing ports is not less than 3 m, and the situation is shown in figure 1; when the height of the reaction tank is 10-15 meters, 3 dosing ports are arranged in the vertical direction, the distance between the first dosing port 5 and the second dosing port 6 is not less than 3 meters, and the distance between the second dosing port 6 and the third dosing port is not less than 4 meters; when the height of the reaction tank exceeds 15 meters, at least 4 dosing ports are arranged in the vertical direction, the distance between the first dosing port 5 and the second dosing port 6 is not less than 3 meters, the distance between the second dosing port 6 and the third dosing port is not less than 4 meters, and the distance between the third dosing port and the fourth dosing port is not less than 4.5 meters.
The advantage of multi-point dosing is that because the height of the reaction tank in the vertical direction is higher, if H is added from the bottom 2 O 2 ，H 2 O 2 Unstable in nature, during the ascent, on the one hand H 2 O 2 Ineffective decomposition occurs, affecting the reaction with O 3 An activation reaction occurs. On the other hand, H 2 O 2 After the ozone molecule is activated, OH generated is diffused into the water body, and quenching is easy to occur in the upward diffusion process due to the higher height. Therefore, the medicine is added by adopting a vertical multi-point medicine adding mode, and H is improved 2 O 2 And OH is effective in utilization rate, and the removal effect of multisource ozone catalytic oxidation coupled degradation organic pollutants is enhanced.
The electrode socket is used for installing an electro-catalysis cathode and an anode, the socket is an outer stainless steel pipe (welded with the whole outer wall of the reaction tank) from outside to inside, the inner layer adopts a waterproof sleeve and a rubber gasket, the innermost layer is a copper bar, the copper bar can be fixed with an inner electrode through a copper bolt, and the copper bar is externally connected with a voltage-stabilizing direct-current power supply through a cable. In this embodiment, the first electrode socket 7 is placed 1-2m above the second dosing port 6, and the second electrode socket 8 is placed 0.1-0.5m above the first electrode socket 7, wherein the first electrode socket 7 is a cathode, and the second electrode socket 8 is an anode. If a third dosing port and a fourth dosing port are arranged, a second pair of electrode sockets and a third pair of electrode sockets are added and are respectively arranged 0.5-1m above the third dosing port and the fourth dosing port.
Claims (7)
1. A multisource green advanced oxidation coupling reaction device based on ozone catalytic oxidation is characterized by comprising a reaction tank, a water inlet, a water outlet, a circulating water inlet, a circulating water outlet, a circulating pump, a jet flow water inlet, a dosing port and an electrode socket, wherein the water inlet is arranged at the lower part of the reaction tank, and the water outlet is arranged at the upper part of the reaction tank; the circulating water inlet is arranged at the upper part of the reaction tank and is connected with the inlet of the circulating pump through a pipeline, and the circulating water outlet is arranged at the lower part of the reaction tank and is connected with the outlet of the circulating pump through a pipeline; the jet flow water inlet is arranged at the lower part of the reaction tank and is connected with the ozone generator through a pipeline; the relative positions of the jet flow water inlet, the circulating water outlet and the water inlet at the lower part of the reaction tank are sequentially from bottom to top; the relative positions of the circulating water inlet and the circulating water outlet on the upper part of the reaction tank are a circulating water inlet and a circulating water outlet from bottom to top in sequence; a dosing port is arranged on the reaction tank above the water inlet, and paired electrode sockets are arranged on the reaction tank above the dosing port.
2. The multi-source green advanced oxidation coupling reaction device based on catalytic ozonation of claim 1, wherein the pipes connected with the circulating water inlet, the circulating water outlet and the jet flow water inlet extend into the reaction tank, and the pipes inside the reaction tank are perforated coils.
3. The multi-source green advanced oxidation coupling reaction device based on catalytic ozonation according to claim 2, wherein the pipeline connected with the jet water inlet extends to the part in the reaction tank, and a titanium disc aeration head or a rotational flow aeration head is connected at the perforation.
4. The multi-source green advanced oxidation coupling reaction device based on ozone catalytic oxidation as claimed in claim 1, wherein a multi-phase flow pump is further connected to a pipeline between the jet water inlet and the ozone generator, the ozone generator is connected to an inlet side of the multi-phase flow pump, and one path of an inlet of the multi-phase flow pump is connected to an outlet pipeline of the circulating pump.
5. The multi-source green advanced oxidation coupling reaction device based on ozone catalytic oxidation of claim 1, characterized in that the height of the reaction tank is more than 5 meters and less than 10 meters, the two dosing ports are arranged along the vertical direction and respectively comprise a first dosing port and a second dosing port from bottom to top, the distance between the two dosing ports is not less than 3 meters, the paired electrode sockets are a pair and respectively comprise a first electrode socket and a second electrode socket from bottom to top, the first electrode socket is arranged 1-2m above the second dosing port, and the second electrode socket is arranged 0.1-0.5m above the first electrode socket.
6. The multi-source green advanced oxidation coupling reaction device based on ozone catalytic oxidation according to claim 1, characterized in that the height of the reaction tank is more than 10 meters and less than 15 meters, the three dosing ports are arranged along the vertical direction and respectively include a first dosing port, a second dosing port and a third dosing port from bottom to top, the distance between the first dosing port and the second dosing port is not less than 3 meters, the distance between the second dosing port and the third dosing port is not less than 4 meters, the paired electrode sockets are two pairs and are respectively a first electrode socket, a second electrode socket, a third electrode socket and a fourth electrode socket from bottom to top, wherein the first electrode socket is arranged 1-2 meters above the second dosing port, the third electrode socket is arranged 0.5-1 meters above the third dosing port, the distance between the first electrode socket and the second electrode socket is 0.1-0.5 meters, and the distance between the third electrode socket and the fourth electrode socket is 0.1-0.5 meters.
7. The multi-source green advanced oxidation coupling reaction device based on ozone catalytic oxidation according to claim 1, characterized in that the height of the reaction tank exceeds 15 meters, the number of the dosing ports is four, the dosing ports are arranged along the vertical direction, the first dosing port, the second dosing port, the third dosing port, the fourth dosing port, the distance between the first dosing port and the second dosing port is not less than 3 meters, the distance between the second dosing port and the third dosing port is not less than 4 meters, the distance between the third dosing port and the fourth dosing port is not less than 4.5 meters, the paired electrode sockets are three pairs, the number of the electrode sockets are arranged along the vertical direction, the first electrode socket, the second electrode socket, the third electrode socket, the fourth electrode socket, the fifth electrode socket and the sixth electrode socket are arranged from bottom to top, the first electrode socket is arranged 1-2 meters above the second dosing port, the third electrode socket is arranged 0.5-1 meters above the third dosing port, the fifth electrode socket is arranged 0.5-1 meters above the fourth electrode socket, the fifth electrode socket is arranged 0.5 sockets above the fourth electrode socket, the sixth electrode socket is arranged between the first electrode socket and the electrode socket, the electrode sockets are arranged between the first electrode socket and the electrode socket 0.5-0.5, and the electrode sockets between the fifth electrode socket, the electrode socket between the electrode socket 0.0.5-0.5 electrode socket and the electrode socket between the electrode socket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223157465.7U CN218561252U (en) | 2022-11-28 | 2022-11-28 | Multi-source green advanced oxidation coupling reaction device based on ozone catalytic oxidation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223157465.7U CN218561252U (en) | 2022-11-28 | 2022-11-28 | Multi-source green advanced oxidation coupling reaction device based on ozone catalytic oxidation |
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| Publication Number | Publication Date |
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| CN218561252U true CN218561252U (en) | 2023-03-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223157465.7U Active CN218561252U (en) | 2022-11-28 | 2022-11-28 | Multi-source green advanced oxidation coupling reaction device based on ozone catalytic oxidation |
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| CN (1) | CN218561252U (en) |
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- 2022-11-28 CN CN202223157465.7U patent/CN218561252U/en active Active
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