CN212894039U - Iron-carbon micro-electrolysis wastewater pretreatment device - Google Patents
Iron-carbon micro-electrolysis wastewater pretreatment device Download PDFInfo
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Abstract
The utility model discloses an iron-carbon micro-electrolysis wastewater pretreatment device, which comprises a water inlet system, an iron-carbon micro-electrolysis reaction tank, a micro-nano bubble generator and a water outlet circulating system; wherein the water inlet system and the water outlet circulating system are respectively connected with the iron-carbon micro-electrolysis reaction tank; the iron-carbon micro-electrolysis reaction tank is provided with an aeration pipeline, and the micro-nano bubble generator is connected with the iron-carbon micro-electrolysis reaction tank through the aeration pipeline. The device has solved traditional organic waste water treatment process and has got rid of the effect unsatisfactory and lead to aquatic COD, ammonia nitrogen, total nitrogen and chromaticity scheduling problem not up to standard to difficult degradation complicated organic pollutant, and is very effective to the processing of difficult degradation polycyclic, heterocyclic organic matter and poisonous and harmful substance in the waste water, and the waste water can satisfy the requirement of follow-up entering biochemical technology system after the processing.
Description
Technical Field
The utility model relates to a waste water treatment technical field, concretely relates to little electrolysis wastewater pretreatment of water device of iron carbon.
Background
With the rapid development of industries such as petroleum, chemical industry, pharmacy and the like, a large amount of high-concentration organic industrial wastewater which is difficult to degrade is generated, the wastewater has the characteristics of high organic pollutant content, high chromaticity, high toxicity, difficult degradation and the like, and even if the wastewater is diluted by hundreds of times, microorganisms are still difficult to culture and can not be directly subjected to biochemical treatment. Aiming at the characteristic of poor biodegradability of the wastewater, a corresponding pretreatment method can be adopted to improve the biodegradability of the wastewater, so that the treatment effect of a subsequent biochemical system is ensured, and therefore, the selection of an applicable pretreatment device and method is the key for treating the wastewater.
The principle of the iron-carbon micro-electrolysis technology is that a 1.2V electrode potential difference existing between iron and carbon is utilized, in acidic wastewater, Fe and C in iron scraps (main components of Fe and C) form a plurality of micro corrosion cells, iron with low potential is used as an anode, inert carbon with high potential is used as a cathode to form a micro electrolysis electrode, so that the corrosion cells and the electrolysis electrode in the wastewater form a plurality of electrolysis loops and generate electrochemical reaction, organic pollutants in the wastewater are degraded mainly through oxidation reduction, and a good organic pollutant removing effect is achieved. However, after a large number of practical applications, it is found that after the iron-carbon micro-electrolysis device operates for a period of time, the surface of iron carbon is easily covered by iron oxide, so that the iron carbon filler is passivated and inactivated, the removal effect is reduced, and the long-term operation is difficult.
The ozone method belongs to an advanced oxidation method, and is generally used as a wastewater pretreatment stage, the ozone method achieves the effect of removing organic pollutants by generating hydroxyl radicals (& OH) through ozone, however, in practical application, the retention time of ozone in water is short, the utilization rate is low, and the problems of low removal efficiency, high operation cost and the like exist.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. For this, the utility model provides an iron carbon micro-electrolysis pretreatment of water device, the effect of getting rid of that the device can solve traditional iron carbon micro-electrolysis method and appear after operation a period descends, and the ozone utilization ratio is low in iron carbon filler passivation inactivation and the traditional ozone method, the running cost scheduling problem that is too high, and the device is very ideal to poisonous and harmful substance treatment effects such as COD, ammonia nitrogen, colourity and difficult degradation polycycle, heterocyclic in the organic waste water very much.
The iron-carbon micro-electrolysis wastewater treatment pre-treatment device comprises a water inlet system, an iron-carbon micro-electrolysis reaction tank, a micro-nano bubble generator and a water outlet circulating system; wherein the water inlet system and the water outlet circulating system are respectively connected with the iron-carbon micro-electrolysis reaction tank; the iron-carbon micro-electrolysis reaction tank is provided with an aeration pipeline, and the micro-nano bubble generator is connected with the iron-carbon micro-electrolysis reaction tank through the aeration pipeline. The inlet system will treat that waste water is leading-in the little electrolysis retort of iron carbon, water circulating system derives the waste water of handling and can circulate again leading-in the little electrolysis retort of iron carbon continues the reaction, and ozone passes through little nano bubble generator produces ozone nanometer bubble and gets into and react in the little electrolysis retort of iron carbon. The micro-nano bubble generator can increase ozone micro-nano bubbles in unit space, so that the bubbles are more dispersed, and the efficiency of hydroxyl radicals (OH) generated by ozone is further improved, so that the ozone is more fully utilized; in addition, a large amount of iron oxide can be deposited on the surface of the iron-carbon filler after the iron-carbon filler operates for a period of time, and a large amount of dispersed ozone micro-nano bubbles can flush away the iron oxide, so that the service life and the efficiency of the filler are prolonged.
According to some embodiments of the present invention, an iron-carbon packing layer is disposed in the iron-carbon micro-electrolysis reaction tank, the iron-carbon packing layer comprises at least four independent movable iron-carbon packing modules, each two movable iron-carbon packing modules form a unit, and an aeration pipeline is disposed at the bottom of each unit; a plurality of aeration ports are arranged on the aeration pipeline, and at least one aeration port is arranged below each movable iron-carbon filler module. The iron-carbon filler in the iron-carbon micro-electrolysis reaction tank is divided into four independent areas, each two areas are positioned on the same horizontal layer, and the bottom of each layer is provided with a grid support bracket and an aeration pipeline, so that the structure can effectively increase the contact area of wastewater and the iron-carbon filler, and greatly enhance the reaction efficiency of iron-carbon micro-electrolysis; and the iron-carbon filler layer is movable, so that the operation personnel can change materials conveniently.
Furthermore, the outside of the iron-carbon micro-electrolysis reaction tank is also provided with material changing ports, and the number of the material changing ports is equal to that of the movable iron-carbon filler modules. The material changing port enables the replacement operation of the internal movable iron-carbon filler module to be more convenient. The outside of the tank body that every filler region corresponds all is equipped with the material changing mouth, and the iron carbon packing layer is movable, makes things convenient for operating personnel's material changing.
Furthermore, a grid filler bearing bracket is further arranged in the iron-carbon micro-electrolysis reaction tank, the movable iron-carbon filler module is arranged on the grid filler bearing bracket, and the grid filler bearing bracket is used for bearing the movable iron-carbon filler module.
According to some embodiments of the utility model, micro-nano bubble generator's inlet end links to each other with ozone generator, and it gives vent to anger the end and links to each other with little electrolysis of iron carbon interior aeration pipe for break up into the bubble of 50 microns to between tens of nanometers and carry and react in the little electrolysis reaction tank of iron carbon with ozone.
According to some embodiments of the present invention, the water inlet system comprises a water inlet pump, a water inlet pipe, an automatic concentrated sulfuric acid adding device, a pipeline mixer and a pH online detector; the intake pump pass through the inlet tube with the little electrolysis retort of iron carbon is connected, the inlet tube passes through the intake pump with waste water and goes into the little electrolysis retort of iron carbon, be equipped with pipeline mixer, concentrated sulfuric acid automatic feeding device and pH on-line measuring appearance on the inlet tube in proper order. The wastewater needs to be acidified before the iron-carbon micro-electrolysis reaction is carried out, the concentrated sulfuric acid automatic adding device and the pipeline mixer are arranged on the water outlet pipe, the wastewater can be acidified, and the pH value of the wastewater can be further controlled by the pH online detector.
According to some embodiments of the present invention, the water outlet circulation system comprises an overflow tank, a water outlet pipe, a return pump, and an evacuation valve; the overflow groove is connected to the upper part of the iron-carbon micro-electrolysis reaction tank, a water outlet pipe and a return pipe are respectively arranged on the overflow groove, the water outlet pipe can discharge the wastewater into a subsequent treatment unit for treatment, and a return pump is arranged on the return pipe and connected with the water inlet system, so that the wastewater can be pumped back into the reaction tank for circular treatment.
Furthermore, valves are respectively arranged on the water outlet pipe and the return pipe. The treated wastewater can be controlled to be discharged or continuously reacted through the adjustment of the water outlet pipe and the return pipe valve; and collecting waste water at the water outlet for detection, closing the return pipe valve and opening the water outlet valve for water discharge if the index is qualified, and closing the water outlet valve and opening the return pipe valve for secondary reflux treatment if the index is unqualified.
According to some embodiments of the present invention, the bottom of the iron-carbon micro-electrolysis reaction tank is further provided with an emptying valve.
In the specific implementation process, firstly, the pH value of the organic wastewater is adjusted, then the organic wastewater is pumped into an iron-carbon micro-electrolysis reaction tank through a water inlet pump to carry out pretreatment on toxic and harmful substances, and meanwhile, a micro-nano bubble generator outside the reaction tank breaks up ozone generated by an ozone generator into micro-bubbles between 50 microns and tens of nanometers and conveys the micro-bubbles into the iron-carbon micro-electrolysis reaction tank to replace a conventional aeration process in the traditional iron-carbon micro-electrolysis reaction so as to fulfill the aim of strengthening the iron-carbon micro-electrolysis reaction. After the wastewater is subjected to iron-carbon micro-electrolysis reaction and micro-nano ozone bubbles in the reaction tank and simultaneously subjected to enhanced reaction, the wastewater is discharged through an overflow tank discharge pipe or flows back to the reaction tank through a return pipe to be continuously treated after meeting the requirements of subsequent biochemical treatment until the effluent meets the requirements of the biochemical treatment, so that the pretreatment effect is achieved.
The utility model discloses a little electrolysis wastewater pretreatment of water device of iron carbon has following beneficial effect:
1. the micro-nano ozone bubbles replace the traditional aeration process and the ozone process, so that the retention time of ozone in the water body can be prolonged, and the efficiency of generating hydroxyl radicals (OH) by ozone is enhanced, thereby improving the utilization rate of ozone and the wastewater treatment efficiency, and realizing the aim of reducing the operation cost.
2. When the iron-carbon filler runs for a long time, due to the existence of micro-nano ozone bubbles, iron oxide can be carried away from the surface of the filler along with a large amount of micro-nano bubbles in a water body, and the filler cannot be passivated and inactivated by accumulation, so that the service life of the iron-carbon filler is greatly prolonged.
3. Compared with the traditional organic wastewater pretreatment device, the device has the advantages of simple process, convenient operation, low operation and maintenance cost and more efficient treatment of the toxic and harmful substances such as refractory polycyclic and heterocyclic substances.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of an iron-carbon micro-electrolysis wastewater pretreatment device in an embodiment of the present invention;
description of reference numerals:
1. a water inlet pipe; 2. a water inlet pump; 3. a pipeline mixer; 4. an automatic concentrated sulfuric acid adding device; 5. a pH on-line detector; 6. a micro-nano bubble generator; 7. a material changing port; 8. an iron-carbon filler layer; 9. an aeration pipe; 10. a grid filler support bracket; 11. an overflow trough; 12. a water outlet pipe; 13. a return pipe; 14. a reflux pump; 15. an evacuation valve; 16. an iron-carbon micro-electrolysis reaction tank.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The utility model discloses the most crucial design lies in: provides a reinforced iron-carbon micro-electrolysis wastewater pretreatment device which is suitable for the iron-carbon micro-electrolysis treatment of organic wastewater.
Referring to fig. 1, fig. 1 is a diagram of a pretreatment device for enhanced iron-carbon micro-electrolysis wastewater, which includes a water inlet pump 2, a water inlet pipe 1, a concentrated sulfuric acid automatic feeding device 4, a pipeline mixer 3, a pH online detector 5, an iron-carbon micro-electrolysis reaction tank 16, a material changing port 7, a movable iron-carbon packing layer 8, a micro-nano bubble generator 6, an aeration pipeline 9, a grid packing support bracket 10, an overflow trough 11, a water outlet pipe 12, a return pipe 13, a return pump 14, and an emptying valve 15. The inlet tube pump waste water pass through the intake pump and go into to the little electrolytic reaction jar of iron carbon, be equipped with pipeline mixer, concentrated sulfuric acid automatic feeding device, pH on-line measuring appearance on the outlet pipe between intake pump and the little electrolytic reaction pond of iron carbon in proper order.
The iron-carbon micro-electrolysis reaction tank is characterized in that: the iron-carbon micro-electrolysis reactor is characterized in that four independent movable iron-carbon filler modules, a grid filler support bracket and two aeration pipelines connected with the micro-nano bubble generator are sequentially arranged in the iron-carbon micro-electrolysis reactor, four material changing ports corresponding to the iron-carbon filler layers are respectively arranged outside the reactor, an overflow groove is arranged on the upper part of the reactor, and an emptying valve is arranged at the bottom of the reactor. Set up independent iron carbon packing layer and separate the little electrolysis reaction zone of iron carbon to use many the micro-nano aeration pipe of ozone to add and hold the effect, can effectively increase the area of contact of waste water and iron carbon filler, thereby make the reaction of the little electrolysis of iron carbon more abundant. The reaction efficiency can be improved by dividing the reaction zone into four areas, and the economic cost and the workload and difficulty of manual material changing can not be increased; the outside of the tank body that every filler region corresponds all is equipped with the material changing mouth, and the iron carbon packing layer is movable, makes things convenient for operating personnel's material changing.
The micro-nano bubble generator is characterized in that: the air inlet end of the micro-nano bubble generator is connected with the ozone generator, the air outlet end of the micro-nano bubble generator is connected with the inner aeration pipeline of the iron-carbon micro-electrolysis, and the micro-nano bubble generator can break ozone into micro bubbles between 50 micrometers and several tens of nanometers and convey the micro bubbles into the iron-carbon micro-electrolysis reaction tank for reaction.
The overflow launder is characterized in that: the overflow groove is provided with a water outlet pipe and a return pipe, the water outlet pipe can discharge the wastewater into a subsequent treatment unit for treatment, and the return pipe is provided with a valve and a return pump which can pump the wastewater back into the reaction tank for circular treatment.
In the specific implementation process, firstly, after the pH value of the organic wastewater is adjusted by a concentrated sulfuric acid automatic adding device 4, a pipeline mixer 3 and a pH online detector 5, the organic wastewater is pumped into an iron-carbon micro-electrolysis reaction tank 16 through a water inlet pump 1 to carry out pretreatment on toxic and harmful substances, and meanwhile, a micro-nano bubble generator 6 outside the reaction tank breaks up ozone generated by an ozone generator into micro bubbles between 50 micrometers and several tens of nanometers and conveys the micro bubbles into the iron-carbon micro-electrolysis reaction tank through an aeration pipeline 9 to replace a conventional aeration process in the traditional iron-carbon micro-electrolysis reaction, so that the purpose of strengthening the iron-carbon micro-electrolysis reaction is achieved. After the wastewater is subjected to iron-carbon micro-electrolysis reaction and micro-nano ozone bubbles in the reaction tank and simultaneously subjected to enhanced reaction, the wastewater is discharged through a water outlet pipe 12 on an overflow tank 11 or flows back to the reaction tank through a return pipe 13 to be continuously treated after meeting the requirements of subsequent biochemical treatment until the effluent meets the requirements of the biochemical treatment, and the effect of pretreatment is achieved.
In conclusion, the iron-carbon micro-electrolysis wastewater pretreatment device has the following advantages:
1. the iron-carbon packing layer falls into four independent regions in the iron-carbon microelectrolysis reaction tank, and every two regions are located on the same horizontal layer, and each layer bottom all is provided with grid support bracket and aeration pipeline, and this structure can effectual increase waste water and the area of contact of iron-carbon packing, very big strengthening the reaction efficiency of iron-carbon microelectrolysis. Simultaneously, the external portion of jar that every packing region corresponds all is equipped with the material changing mouth, and the iron carbon packing layer is movable, makes things convenient for operating personnel's material changing.
2. The micro-nano ozone bubbles replace the traditional aeration process and the ozone process, so that the retention time of ozone in the water body can be prolonged, and the efficiency of generating hydroxyl radicals (OH) by ozone is enhanced, thereby improving the utilization rate of ozone and the wastewater treatment efficiency, and realizing the aim of reducing the operation cost.
3. When the iron-carbon filler runs for a long time, due to the existence of micro-nano ozone bubbles, iron oxide can be carried away from the surface of the filler along with a large amount of micro-nano bubbles in a water body, and the filler cannot be passivated and inactivated by accumulation, so that the service life of the iron-carbon filler is greatly prolonged.
4. Compared with the traditional organic wastewater pretreatment device, the device has the advantages of simple process, convenient operation, low operation and maintenance cost and more efficient treatment of the toxic and harmful substances such as refractory polycyclic and heterocyclic substances.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (9)
1. The iron-carbon micro-electrolysis wastewater pretreatment device is characterized by comprising a water inlet system, an iron-carbon micro-electrolysis reaction tank, a micro-nano bubble generator and a water outlet circulating system; wherein the water inlet system and the water outlet circulating system are respectively connected with the iron-carbon micro-electrolysis reaction tank; the iron-carbon micro-electrolysis reaction tank is provided with an aeration pipeline, and the micro-nano bubble generator is connected with the iron-carbon micro-electrolysis reaction tank through the aeration pipeline.
2. The iron-carbon microelectrolysis wastewater pretreatment device according to claim 1, wherein an iron-carbon filler layer is arranged in the iron-carbon microelectrolysis reaction tank, the iron-carbon filler layer comprises at least four independent movable iron-carbon filler modules, every two movable iron-carbon filler modules form a unit, and the bottom of each unit is provided with an aeration pipeline; a plurality of aeration ports are arranged on the aeration pipeline, and at least one aeration port is arranged below each movable iron-carbon filler module.
3. The iron-carbon micro-electrolysis wastewater pretreatment device according to claim 2, wherein the iron-carbon micro-electrolysis reaction tank is further provided with material change ports outside, and the number of the material change ports is equal to the number of the movable iron-carbon filler modules.
4. The iron-carbon microelectrolysis wastewater pretreatment device according to claim 2, wherein a grid filler bearing bracket is further arranged in the iron-carbon microelectrolysis reaction tank, and the movable iron-carbon filler module is arranged on the grid filler bearing bracket.
5. The iron-carbon micro-electrolysis wastewater pretreatment device according to claim 1, wherein an air inlet end of the micro-nano bubble generator is connected with an ozone generator, an air outlet end of the micro-nano bubble generator is connected with an iron-carbon micro-electrolysis internal aeration pipeline, and the micro-nano bubble generator is used for dispersing ozone into bubbles of 50 micrometers to tens of nanometers and conveying the bubbles into an iron-carbon micro-electrolysis reaction tank for reaction.
6. The iron-carbon micro-electrolysis wastewater pretreatment device according to claim 1, wherein the water inlet system comprises a water inlet pump, a water inlet pipe, an automatic concentrated sulfuric acid adding device, a pipeline mixer and a pH online detector; the water inlet pump is connected with the iron-carbon micro-electrolysis reaction tank through a water inlet pipe, and a pipeline mixer, an automatic concentrated sulfuric acid adding device and a pH online detector are sequentially arranged on the water inlet pipe.
7. The iron-carbon microelectrolysis wastewater pretreatment device according to claim 1, wherein the water outlet circulation system comprises an overflow tank, a water outlet pipe, a return pump and an emptying valve; the overflow groove is connected to the upper part of the iron-carbon micro-electrolysis reaction tank, a water outlet pipe and a return pipe are respectively arranged on the overflow groove, and a return pump is arranged on the return pipe and is connected with the water inlet system.
8. The iron-carbon micro-electrolysis wastewater pretreatment device according to claim 7, wherein valves are respectively arranged on the water outlet pipe and the return pipe.
9. The iron-carbon micro-electrolysis wastewater pretreatment device according to claim 1, characterized in that an emptying valve is further arranged at the bottom of the iron-carbon micro-electrolysis reaction tank.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114702119A (en) * | 2022-06-07 | 2022-07-05 | 天润(山东)生态环境科技有限公司 | Organic wastewater treatment system and treatment method |
| CN116239256A (en) * | 2023-03-03 | 2023-06-09 | 合肥工业大学 | Hardly degradable organic wastewater treatment device and application |
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2020
- 2020-06-02 CN CN202020987209.2U patent/CN212894039U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114702119A (en) * | 2022-06-07 | 2022-07-05 | 天润(山东)生态环境科技有限公司 | Organic wastewater treatment system and treatment method |
| CN114702119B (en) * | 2022-06-07 | 2022-08-26 | 天润(山东)生态环境科技有限公司 | Organic wastewater treatment system and treatment method |
| CN116239256A (en) * | 2023-03-03 | 2023-06-09 | 合肥工业大学 | Hardly degradable organic wastewater treatment device and application |
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