CN215161920U - ozone-AO effluent disposal system - Google Patents
ozone-AO effluent disposal system Download PDFInfo
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- CN215161920U CN215161920U CN202120482450.4U CN202120482450U CN215161920U CN 215161920 U CN215161920 U CN 215161920U CN 202120482450 U CN202120482450 U CN 202120482450U CN 215161920 U CN215161920 U CN 215161920U
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Abstract
The present application is an ozone-AO wastewater treatment system, comprising: the ozone reaction system is arranged in front of the AO biochemical system and is communicated with the AO biochemical system, the part which is difficult to be biochemically degraded in the wastewater can be oxidized by ozone before the ozone reaction system is arranged in front of the AO biochemical system, and then the subsequent biochemical degradation is carried out, for the wastewater with reduced COD and deep denitrification requirements, the removal rate of COD can be effectively improved, the carbon source adding cost is reduced, thereby reducing the cost, the ozone reaction system also comprises a reaction area and an ozone buffering and degassing area, the reaction area is arranged in front of the ozone buffering and degassing area and is communicated with the reaction area, the reaction area is internally provided with a first ORP device, the accurate adding of the ozone 4 in the reaction zone can be ensured, the reaction is completely carried out, and the ozone is not wasted, and the ozone buffering and degassing zone is provided with the second ORP device and the counter-flow inclined plate, so that the complete ozone removal can be ensured, and the organisms in the biochemical pool can not be damaged.
Description
Technical Field
The application relates to the technical field of chemical wastewater treatment, in particular to a system for treating wastewater by combining ozone and AO processes.
Background
The development of the chemical industry field promotes economic development and improves the quality of life of people, meanwhile, a series of pollution to water resources, air and the like is indispensable, chemical wastewater generally contains various chemical elements, and the discharge can cause great pollution to the environment without being treated, so that the health of human bodies is influenced, so the chemical wastewater can be discharged only after being treated, currently, the biochemical treatment is singly adopted for sewage with poor biodegradability and cannot reach the discharge standard, some researchers put forward a biological activated carbon process, on one hand, the activated carbon is used as a microbial carrier for growing a biological membrane, on the other hand, the activated carbon is used for adsorbing organic substances which are difficult to degrade, the COD in the sewage is further reduced, but the activated carbon needs to be regenerated, if the activated carbon is not regenerated, the saturated activated carbon only can play the role of a common biological carrier, and the activated carbon is still complex in regeneration operation, the regeneration causes damage to organisms, and reduces the number of organisms in a biochemical pool, so that the adoption of the activated carbon to reduce COD in the sewage also has certain problems.
At present, researchers also provide a process for oxidizing and chain breaking organic matters in wastewater by using ozone, but the ozone cannot be completely removed, so that the ozone destroys organisms in a biochemical pond, the biochemical efficiency is reduced, and the wastewater treatment cost is increased.
How to realize that the ozone desorption is complete in the wastewater treatment process, the biological destruction to the biochemical pond can not be caused, and the efficiency of the biochemical system to COD is improved, for the wastewater with the requirement of deep denitrification, the carbon source addition can be reduced, and the wastewater treatment cost is reduced.
SUMMERY OF THE UTILITY MODEL
The purpose of the application is: the ozone removal is complete in the wastewater treatment process, so that the ozone can not damage organisms in the biochemical tank, the efficiency of the biochemical system to COD is improved, the carbon source addition can be reduced for the wastewater with the deep denitrification requirement, and the wastewater treatment cost is reduced.
The object of the present application is achieved by an ozone-AO wastewater treatment system, comprising: the system comprises an ozone reaction system and an AO biochemical system, wherein the ozone reaction system is arranged in front of the AO biochemical system and is communicated and connected with the AO biochemical system, the ozone reaction system comprises a reaction area and an ozone buffering and degassing area, and the reaction area is arranged in front of the ozone buffering and degassing area and is communicated and connected with the AO biochemical system; the device is characterized in that a first ORP device is arranged in the reaction zone, a second ORP device is arranged in the ozone buffering and degassing zone, ORPs of the reaction zone and the ozone buffering and degassing zone are monitored in real time, a counter-flow inclined plate is arranged at the water outlet position of the ozone buffering and degassing zone, the inclination angle between the counter-flow inclined plate and the water outlet wall of the ozone buffering and degassing zone is 30 degrees, the counter-flow inclined plate adopts a straight plate structure, and bubbles formed by ozone in wastewater are intercepted and separated.
Preferably, the first and second electrodes are formed of a metal,
the reaction zone comprises a main reaction zone and a secondary reaction zone, wherein the main reaction zone is positioned in front of the secondary reaction zone, and the main reaction zone and the secondary reaction zone are communicated and connected.
Preferably, the first and second electrodes are formed of a metal,
the ozone buffering and degassing zone comprises a buffering zone and a degassing zone, wherein the buffering zone is arranged in front of the degassing zone, and the buffering zone and the degassing zone are communicated and connected.
Preferably, the first and second electrodes are formed of a metal,
the first ORP device is disposed inside the secondary reaction zone.
Preferably, the first and second electrodes are formed of a metal,
the second ORP device is disposed inside the degassing zone.
Preferably, the first and second electrodes are formed of a metal,
the counter-flow inclined plate is arranged at the water outlet position of the degassing area.
Preferably, the first and second electrodes are formed of a metal,
the AO biochemical system comprises an A pool, an O pool and a sedimentation pool, wherein the A pool, the O pool and the sedimentation pool are communicated and connected in sequence.
Preferably, the first and second electrodes are formed of a metal,
and the sedimentation tank is provided with a sludge reflux pump in a matching way, and sludge in the sedimentation tank is pumped back to the A tank and/or the O tank.
Compared with the prior art, the application has the following obvious advantages and effects:
1. utilizing an ozone-AO wastewater treatment system comprising: the ozone reaction system is arranged in front of the AO biochemical system and is communicated with the AO biochemical system, the part which is difficult to be biochemically degraded in the wastewater can be oxidized by ozone and then is beneficial to the subsequent biochemical system to degrade COD, and the adding of a carbon source can be reduced for the wastewater with deep denitrification requirement, so that the cost can be reduced;
2. the ozone reaction system also comprises a reaction zone and an ozone buffering and degassing zone, wherein the reaction zone is arranged in front of the ozone buffering and degassing zone and is communicated with the ozone buffering and degassing zone, macromolecular organic matters in the wastewater are oxidized and broken in the reaction zone, a first ORP device is arranged in the reaction zone, the ORP in the reaction zone is monitored in real time, the accurate addition of ozone in the reaction zone can be ensured, the reaction is completely carried out, and no ozone is wasted;
3. the water outlet position of the ozone buffering and degassing zone is provided with a counter-flow inclined plate, the inclination angle between the counter-flow inclined plate and the water outlet wall of the ozone buffering and degassing zone is 30 degrees, the counter-flow inclined plate adopts a straight plate structure, bubbles formed by ozone in wastewater can be intercepted and separated, and the complete ozone removal is further ensured.
Drawings
Fig. 1 is a diagram of the overall structural arrangement of the present application.
List of parts in this application
Detailed Description
Specific embodiments thereof are described below in conjunction with the following description and the accompanying drawings to teach those skilled in the art how to make and use the best mode of the present application. For the purpose of teaching application principles, the following conventional aspects have been simplified or omitted. Those skilled in the art will appreciate variations from these embodiments that fall within the scope of the application. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the present application. In the present application, the terms "upper", "lower", "left", "right", "middle" and "one" are used for clarity of description, and are not used to limit the scope of the invention, and the relative relationship between the terms and the corresponding terms may be changed or adjusted without substantial technical change. Thus, the present application is not limited to the specific embodiments described below, but only by the claims and their equivalents.
FIG. 1 shows a specific embodiment of an ozone-AO wastewater treatment system of the present application.
An ozone-AO wastewater treatment system comprising: the system comprises an ozone reaction system 1 and an AO biochemical system 2, wherein the ozone reaction system 1 is arranged in front of the AO biochemical system 2 and is communicated with the AO biochemical system 2, the part which is difficult to be biochemically degraded in the wastewater 3 can be oxidized by ozone 4 before the ozone reaction system 1 is arranged in front of the AO biochemical system 2, and then the subsequent biochemical system is beneficial to the degradation of COD (chemical oxygen demand), and the adding amount of a carbon source can be reduced for the wastewater with deep denitrification requirements, so that the cost can be reduced;
further, in order to ensure the accurate adding of the ozone 4 in the ozone reaction system 1 and ensure that the reaction is completely carried out without wasting the ozone 4, the ozone reaction system 1 further comprises a reaction area 11 and an ozone buffering and degassing area 12, the reaction area 11 is arranged in front of the ozone buffering and degassing area 12, and the two are communicated and connected, the wastewater 3 oxidizes and breaks macromolecular organic matters in the wastewater in the reaction zone 11, a first ORP device 1121 is arranged in the reaction zone 11 to monitor the ORP in the reaction zone 11 in real time, the accurate adding of the ozone 4 in the reaction zone 11 can be ensured, the reaction is ensured to be completely carried out, the ozone 4 is not wasted, the second ORP device 1221 is arranged in the ozone buffering and degassing zone 12, the ORP of the ozone buffering and degassing zone 12 is monitored in real time, the complete removal of the ozone 4 is ensured, the organisms in a biochemical pool are not damaged, the sludge activity is improved, the biochemical efficiency is improved, and the wastewater treatment cost is reduced;
the water outlet position of the ozone buffering and degassing zone 12 is provided with a counter-flow sloping plate 1222, the inclination angle of the counter-flow sloping plate 1222 and the water outlet wall of the ozone buffering and degassing zone 12 is 30 degrees, the counter-flow sloping plate 1222 adopts a straight plate structure, bubbles formed by ozone 4 in the wastewater 3 can be intercepted and separated, and complete removal of the ozone 4 is further ensured.
As shown in fig. 1, in the present embodiment,
further, in order to ensure accurate addition of ozone 4 in the ozone reaction system 1 and ensure that the reaction is completely carried out and ozone 4 is not wasted, the reaction zone 11 is further divided into a main reaction zone 111 and a secondary reaction zone 112, the main reaction zone 111 is positioned in front of the secondary reaction zone 112 and is communicated with the secondary reaction zone 112, when wastewater treatment is carried out, wastewater 3 firstly passes through the main reaction zone 111 into which a large amount of ozone 4 is introduced to oxidize and break most of macromolecular organic matters in the wastewater 3, after the wastewater passes through the first oxidation reaction of the main reaction zone 111, the wastewater 3 enters the secondary reaction zone 112, at this time, the ORP in the secondary reaction zone 112 is monitored in real time according to a first ORP device 1121 in the secondary reaction zone 112, the dosage is accurately adjusted, if the macromolecular organic matters in the wastewater 3 are not completely oxidized, ozone 4 is continuously introduced, further, secondary oxidation and breaking are carried out on residual organic matters in the wastewater 3, and the situation that the macromolecular organic matters in the wastewater 3 are oxidized and broken by the ozone 4 in the reaction zone 11 is more complete, if the reaction is complete, ozone 4 does not need to be introduced.
Specifically, as shown in fig. 1, in the embodiment of the present application,
further, in order to detect whether the macromolecule organic matters in the wastewater 3 are completely oxidized and broken, and simultaneously avoid that the organisms of the AO biochemical system 2 are damaged due to incomplete removal of ozone 4 in the ozone reaction system 1, improve the sludge activity, improve the biochemical efficiency, and reduce the wastewater treatment cost, the ozone buffering and degassing zone 12 comprises a buffer zone 121 and a degassing zone 122, the buffer zone 121 is arranged in front of the degassing zone 122, and the buffer zone 121 and the degassing zone are communicated, when the wastewater is treated, the wastewater 3 after the oxidation reaction in the reaction zone 11 is firstly introduced into the buffer zone 121 of the ozone buffering and degassing zone 12, whether the macromolecule organic matters in the wastewater 3 are completely oxidized and broken is observed through the buffer zone 121, and whether the ozone 4 in the wastewater 3 is residual is observed, if necessary, a proper amount of ozone 4 can be added, so that the macromolecule organic matters in the wastewater 3 are completely oxidized and broken, if the ozone 4 has residues, the wastewater 3 is introduced into the degassing zone 122, the residual organic matters in the wastewater 3 are used for consuming the ozone 4, so that the ozone 4 is ensured to be completely consumed, and the subsequent organisms in the biochemical pool are not poisoned.
It should be noted that, as shown in fig. 1, in the embodiment of the present application,
in order to facilitate the complete test of the consumption of the ozone 4 in the wastewater 3 in the ozone buffering degassing zone 12 and ensure the complete removal of the ozone 4, so that the ozone 4 cannot damage the organisms in the biochemical pool, the biochemical efficiency is improved, and the wastewater treatment cost is reduced, a second ORP device 1221 is arranged in the ozone buffering degassing zone 12 to monitor and adjust the oxidation-reduction potential of the wastewater 3 in the ozone buffering degassing zone 12 in real time, in addition, a reverse flow inclined plate 1222 is arranged at the water outlet position of the ozone buffering degassing zone 12 to intercept and separate bubbles formed by the ozone 4 in the wastewater 3 to ensure that the removal of the bubbles of the ozone 4 in the wastewater 3 is finished, and the subsequent organisms in the biochemical pool are not poisoned.
It should be noted that, as shown in fig. 1, in the embodiment of the present application,
since the degassing zone 122 is the last zone of the wastewater 3 entering the AO biochemical system 2 from the ozone reaction system 1, it is necessary to ensure complete removal of ozone 4 in the wastewater 3 passing through the degassing zone 122, and therefore the second ORP device 1221 is disposed inside the degassing zone 122 to monitor and adjust the oxidation-reduction potential of the wastewater 3 in the degassing zone 122 in real time, and further, a reverse flow sloping plate 1222 is disposed at the water outlet position of the degassing zone 122 to intercept and separate bubbles formed by the ozone 4 in the wastewater 3 to ensure complete removal of the bubbles of the internal ozone 4 in the wastewater 3 without causing toxicity to the organisms in the subsequent biochemical pool.
It should be noted that, as shown in fig. 1, in the embodiment of the present application,
after the macromolecule organic matter is oxidized and broken, the wastewater 3 needs to be further biochemically treated, so that the wastewater 3 reaches the discharge standard, the wastewater 3 enters the AO biochemical system 2 after passing through the ozone reaction system 1, and is further biochemically treated, the AO biochemical system 2 of the ozone-AO wastewater treatment system 100 comprises an A tank 21, an O tank 22 and a sedimentation tank 23, the A tank 21, the O tank 22 and the sedimentation tank 23 are sequentially communicated and connected, wherein the tank capacity can be designed according to the actual denitrification requirement, if denitrification is not needed, the A tank 21 can be designed into the tank capacity about 2h of residence time, the O tank is designed according to the removal load of COD, the COD load is not too low, otherwise, the sludge growth is not favorable, and the sedimentation tank 23 is provided with a sludge return pump 231 in a matching manner, so that the sludge in the sedimentation tank 23 is returned to the A tank and/or the O tank.
In summary, the present application has the following advantages:
1. the ozone-AO wastewater treatment system 100 places the ozone reaction system 1 in front of the AO biochemical system 2, can oxidize the part difficult to be biochemically degraded in the wastewater 3 by ozone 4, and then carries out subsequent biochemical degradation, can effectively improve the removal rate of COD for wastewater with the requirements of COD reduction and deep denitrification, and simultaneously reduces the carbon source adding cost, thereby reducing the cost;
2. the ozone-AO wastewater treatment system 100 can completely remove the ozone 4 in the wastewater 3, thereby avoiding the damage of the residual ozone 4 to the organisms in the biochemical pool;
3. and part of small molecular organic matters can be removed in a denitrification mode, so that the aeration cost is reduced.
Since any modifications, equivalents, improvements, etc. made within the spirit and principles of the application may readily occur to those skilled in the art, it is intended to be included within the scope of the claims of this application.
Claims (8)
1. An ozone-AO wastewater treatment system, comprising: the device comprises an ozone reaction system (1) and an AO biochemical system (2), wherein the ozone reaction system (1) is arranged in front of the AO biochemical system (2) and is communicated with the AO biochemical system;
wherein the ozone reaction system (1) comprises a reaction zone (11) and an ozone buffering and degassing zone (12), the reaction zone (11) is arranged in front of the ozone buffering and degassing zone (12), and the reaction zone and the ozone buffering and degassing zone are communicated;
a first ORP device (1121) is arranged in the reaction zone (11), a second ORP device (1221) is arranged in the ozone buffering degassing zone (12), and ORPs of the reaction zone (11) and the ozone buffering degassing zone (12) are monitored in real time;
the water outlet position of the ozone buffering and degassing zone (12) is provided with a counter-flow sloping plate (1222), the inclination angle between the counter-flow sloping plate (1222) and the water outlet wall of the ozone buffering and degassing zone (12) is 30 degrees, the counter-flow sloping plate (1222) adopts a straight plate structure, and bubbles formed by ozone (4) in the wastewater (3) are intercepted and separated.
2. An ozone-AO wastewater treatment system according to claim 1, characterized in that: the reaction zone (11) comprises a main reaction zone (111) and a secondary reaction zone (112), wherein the main reaction zone (111) is positioned in front of the secondary reaction zone (112) and is communicated and connected with the secondary reaction zone.
3. An ozone-AO wastewater treatment system according to claim 1, characterized in that: the ozone buffering and degassing zone (12) comprises a buffer zone (121) and a degassing zone (122), wherein the buffer zone (121) is arranged in front of the degassing zone (122), and the buffer zone and the degassing zone are communicated and connected.
4. An ozone-AO waste water treatment system according to claim 2, characterized in that: the first ORP device (1121) is disposed within the secondary reaction zone (112).
5. An ozone-AO wastewater treatment system according to claim 3, characterized in that: the second ORP device (1221) is disposed inside the degassing zone (122).
6. An ozone-AO wastewater treatment system according to claim 3, characterized in that: the counterflow sloping plate (1222) is arranged at the water outlet position of the degassing area (122).
7. An ozone-AO wastewater treatment system according to claim 1, characterized in that: the AO biochemical system (2) comprises an A pool (21), an O pool (22) and a sedimentation pool (23), wherein the A pool (21), the O pool (22) and the sedimentation pool (23) are communicated and connected in sequence.
8. An ozone-AO wastewater treatment system according to claim 7, characterized in that: the sedimentation tank (23) is provided with a sludge return pump (231) in a matched manner, and sludge in the sedimentation tank (23) is pumped back to the A tank and/or the O tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120482450.4U CN215161920U (en) | 2021-03-06 | 2021-03-06 | ozone-AO effluent disposal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120482450.4U CN215161920U (en) | 2021-03-06 | 2021-03-06 | ozone-AO effluent disposal system |
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| Publication Number | Publication Date |
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| CN215161920U true CN215161920U (en) | 2021-12-14 |
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| CN202120482450.4U Active CN215161920U (en) | 2021-03-06 | 2021-03-06 | ozone-AO effluent disposal system |
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