CN211546034U - Treatment device for degrading ammonia nitrogen in sewage - Google Patents
Treatment device for degrading ammonia nitrogen in sewage Download PDFInfo
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- CN211546034U CN211546034U CN201922191747.0U CN201922191747U CN211546034U CN 211546034 U CN211546034 U CN 211546034U CN 201922191747 U CN201922191747 U CN 201922191747U CN 211546034 U CN211546034 U CN 211546034U
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Abstract
The utility model discloses a treatment device for degrading sewage ammonia nitrogen, which comprises a liquid inlet system, wherein the liquid inlet system comprises at least two liquid inlet tanks, and the liquid inlet tanks are provided with liquid outlets and liquid inlets for introducing sewage and electrolyte; the electrolyte supplying device is respectively communicated with the liquid inlet of each liquid inlet tank; the electrochemical system comprises an electrolytic cell, the two ends of the electrolytic cell are connected with electricity, at least one electrode sheet assembly is arranged in the electrolytic cell, the liquid outlet of each liquid inlet tank is communicated with the inlet of the electrolytic cell through a first pipeline, and a first electric valve is arranged on each first pipeline. The utility model discloses a set up two into fluid reservoirs, the sewage in two into fluid reservoirs can enter into the electrolysis trough in turn and carry out electrochemical reaction to continuously handle the sewage that contains ammonia nitrogen. The utility model discloses an ammonia nitrogen in the sewage is got rid of to the electrochemistry method, and processing technology is simple, also need not to add medicaments such as chlorine or chlorate, easily operates, and the treatment effeciency is high, and the treatment effect is good.
Description
Technical Field
The utility model relates to a treatment device for degrading sewage ammonia nitrogen in the technical field of sewage treatment.
Background
Currently, ammonia nitrogen in sewage is mainly removed by a biological method and a breakpoint chlorine adding method, wherein the biological removal method is to oxidize the ammonia nitrogen in the sewage into nitrite or nitrate under the aerobic condition through the action of aerobic nitrifying bacteria in the biological denitrification treatment process of the sewage; then, under the anoxic condition, nitrite and nitrate are reduced into nitrogen gas by denitrifying bacteria (denitrifier) and are escaped from the sewage. The breakpoint chlorination method is to introduce chlorine or hypochlorite into NH in wastewater4 +By oxidation to N2The chemical denitrification process. The two processes have advantages and disadvantages, the first process is suitable for a sewage treatment process with little ammonia nitrogen change, stable water quantity and large scale, the management is complex, the second process is suitable for small water quantity, but the purchase of the medicament is troublesome, the requirement on the control accuracy of the adding quantity is high, and the integral operation cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve one of the technical problems existing in the prior art at least, provide a degradation sewage ammonia nitrogen's processing apparatus, its processing technology is simple, also need not to add medicaments such as chlorine or chlorate.
According to the embodiment of the first aspect of the utility model, a treatment device for degrading sewage ammonia nitrogen is provided, which comprises a liquid inlet system, wherein the liquid inlet system comprises at least two liquid inlet tanks, and the liquid inlet tanks are provided with liquid outlets and liquid inlets for introducing sewage and electrolyte; the electrolyte supply device is respectively communicated with the liquid inlets of the liquid inlet tanks; the electrochemical system comprises an electrolytic cell, the two ends of the electrolytic cell are connected with electricity, at least one electrode sheet assembly is arranged in the electrolytic cell, the liquid outlet of each liquid inlet tank is communicated with the inlet of the electrolytic cell through a first pipeline, and each first pipeline is provided with a first electric valve.
According to the utility model discloses first aspect embodiment, furtherly, still include the circulating pump, each the first pipeline of feed liquor jar communicates with the entry end of circulating pump respectively, the exit end of circulating pump and the entry intercommunication of electrolysis trough, the export of electrolysis trough communicates with each feed liquor jar through the second pipeline respectively, each all be equipped with the second motorised valve on the second pipeline.
According to the utility model discloses an embodiment of the first aspect, furtherly, be equipped with level sensor in the feed liquor jar, be equipped with the leakage fluid dram on the feed liquor jar, be equipped with the flowing back motorised valve on the leakage fluid dram, level sensor is connected with corresponding first motorised valve and flowing back motorised valve electricity respectively.
According to the utility model discloses first aspect embodiment, furtherly, supply electrolyte device respectively through the inlet intercommunication of third pipeline with each inlet jar, each all be equipped with the third motorised valve on the third pipeline.
According to the utility model discloses first aspect embodiment, further, still include electrical system, electrical system is connected with all first motorised valves, second motorised valve, flowing back motorised valve and third motorised valve electricity.
According to the embodiment of the first aspect of the present invention, further, a plurality of electrolysis chambers for placing the electrode plate assembly are arranged in the electrolysis bath, and the electrolysis chambers are connected in series, and each area of the electrode plate assembly in the electrolysis chamber is increased in sequence along the flowing direction of the liquid.
According to the utility model discloses the first aspect embodiment, further, the electrode slice subassembly includes the polylith electrode slice, the parallel interval of electrode slice sets up.
According to the utility model discloses in the embodiment of the first aspect, further, electrode slice in the electrode slice subassembly divide into first electrode slice and second electrode slice, first electrode slice is fixed in one side of electrolysis chamber, the opposite side at the electrolysis chamber is fixed to the second electrode slice, first electrode slice and the crisscross distribution of second electrode slice.
According to the utility model discloses first aspect embodiment, furtherly, be equipped with the space bar between two adjacent electrolysis chambeies, be equipped with at least one through-hole that can communicate adjacent electrolysis chamber on the space bar, the electrode slice insert in the through-hole and with through-hole clearance fit.
According to an embodiment of the first aspect of the present invention, further, a sealing member is provided between the edge of the partition plate and the inner wall of the electrolytic cell.
The utility model has the advantages that: the utility model discloses a set up two into fluid reservoirs, the sewage in two into fluid reservoirs can enter into the electrolysis trough in turn and carry out electrochemical reaction to continuously handle the sewage that contains ammonia nitrogen. The utility model discloses an ammonia nitrogen in the sewage is got rid of to the electrochemistry method, and processing technology is simple, also need not to add medicaments such as chlorine or chlorate, easily operates, and the treatment effeciency is high, and the treatment effect is good.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.
Fig. 1 is a schematic connection diagram of the present invention;
FIG. 2 is a schematic view of the electrolytic cell of the present invention.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1, the treatment device for degrading ammonia nitrogen in sewage in the embodiment of the present invention includes a liquid inlet system, a liquid supply and electrolysis device 20 and an electrochemical system.
The liquid inlet system includes two at least liquid inlet tanks 10, is equipped with the liquid outlet on the liquid inlet tank 10 and is used for letting in the inlet of sewage and electrolyte, and in this embodiment, the quantity of liquid inlet tank 10 is two. A liquid level sensor is arranged in the liquid inlet tank 10, a liquid outlet is arranged on the liquid inlet tank 10, a liquid outlet electric valve 15 is arranged on the liquid outlet, and the liquid level sensor is electrically connected with the corresponding first electric valve 11 and the liquid outlet electric valve 15 respectively. The drain port is located at the bottom of the liquid feed tank 10.
The liquid electrolyzing device 20 is respectively communicated with the liquid inlet of each liquid inlet tank 10, and the liquid inlet can be positioned at the upper part of the liquid inlet tank 10. In the present embodiment, the electrolytic solution is an industrial salt solution, such as a sodium chloride solution, and a saturated industrial salt solution may be provided in the electrolytic solution device 20. Alternatively, the liquid feeding device 20 and the sewage draining pipeline can be communicated with the liquid inlet of the liquid inlet tank 10 through a Y-shaped pipe; in addition, as an equivalent alternative embodiment, in this embodiment, the liquid inlet includes an electrolyte inlet and a sewage inlet, the sewage inlet of each liquid inlet tank 10 is connected to a sewage drain pipe, a fourth electric valve 14 may be disposed on the sewage drain pipe, the electrolyte supply device 20 is communicated with the liquid inlet of each liquid inlet tank 10 through a third pipe, and a third electric valve 13 is disposed on each third pipe to control the supply of the electrolyte. In addition, the proportion of the sewage and the electrolytic solution directly affects the energy consumption of the system, and preferably, the proportion of the sewage and the electrolytic solution is about 8: 1-9: 1.
The electrochemical system comprises an electrolytic cell 30, both ends of the electrolytic cell 30 are electrically connected, at least one electrode sheet assembly is arranged in the electrolytic cell 30, the liquid outlet of each liquid inlet tank 10 is respectively communicated with the inlet of the electrolytic cell 30 through a first pipeline, and each first pipeline is provided with a first electric valve 11. Preferably, the electrolytic cell 30 is tubular, and the electrolytic cell 30 is a transparent member, so as to observe the electrolytic reaction condition in the electrolytic cell 30. The two ends of the electrolytic cell 30 are respectively provided with a negative electrode connector 71 and a positive electrode connector 72. A plurality of electrolytic cavities for placing the electrode plate assemblies are arranged in the electrolytic tank 30, the electrolytic cavities are connected in series, and the area of the electrode plate assemblies in each electrolytic cavity is sequentially increased along the flowing direction of the liquid. In this embodiment, the electrode sheet assemblies correspond to the electrolysis chambers one by one, that is, one electrode sheet assembly is respectively disposed in each electrolysis chamber, and the area of each electrode sheet assembly changes sequentially. In addition, as an equivalent alternative embodiment, the area of the electrode sheet assemblies in each electrolytic chamber can be changed sequentially by changing the number of the electrode sheet assemblies in each electrolytic chamber. The electrode slice assembly comprises a plurality of electrode slices 40, and the electrode slices 40 are arranged in parallel at intervals. Optionally, the electrode plate 40 is a grid electrode plate, and the surface of the anode has a noble metal coating, so that the current density control range is 1800-2500A/m2In the meantime.
A circulation pump 60 and an electronic control system are also included. The first pipeline of each liquid inlet tank 10 is respectively communicated with the inlet end of a circulating pump 60, the outlet end of the circulating pump 60 is communicated with the inlet of an electrolytic cell 30, the outlet of the electrolytic cell 30 is respectively communicated with each liquid inlet tank 10 through a second pipeline, and each second pipeline is provided with a second electric valve 12. The electric control system is electrically connected with all the first electric valve 11, the second electric valve 12, the liquid drainage electric valve 15, the third electric valve 13 and the fourth electric valve 14. The circulating pump 60 can make the sewage pass through the electrolytic bath 30 for a plurality of times of electrolysis, and can effectively reduce the content of ammonia nitrogen in the sewage. Preferably, the electronic control system is a PLC controller.
Referring to fig. 2, in the present embodiment, a total of 6 electrolysis chambers are provided in the electrolysis cell, and the first electrolysis chamber 31, the second electrolysis chamber 32, the third electrolysis chamber 33, the fourth electrolysis chamber 34, the fifth electrolysis chamber 35 and the sixth electrolysis chamber 36 are arranged in sequence along the direction of liquid flow. And each electrolytic cavity is provided with an electrode plate assembly, and the area of the electrode plate assembly in each electrolytic cavity is sequentially increased along the flowing direction of the liquid. Since the current density is equal to the current divided by the area of the electrode pad 40, when the current is constant, the current density varies with the area of the electrode pad 20. The sewage and the electrolytic solution sequentially flow through the first electrolytic chamber 31, the second electrolytic chamber 32, the third electrolytic chamber 33, the fourth electrolytic chamber 34, the fifth electrolytic chamber 35 and the sixth electrolytic chamber 36, and in the flowing process, the concentration of the electrolytic solution is gradually reduced, the area of the electrode plate 20 in each electrolytic chamber is gradually increased, and the current density is gradually reduced. The reduction of the current density is adapted to the electrolytic solution with low concentration, thereby ensuring that the chlorine evolution efficiency in each level of electrolytic cavity is basically the same, and avoiding the increase of salt consumption and the waste of electric energy.
Further in a preferred embodiment, the electrode pads 40 are disposed equidistantly. The number of electrode sheets 40 in each electrode sheet assembly is equal, and the area of the electrode sheets 40 in each electrolytic chamber increases in turn in the direction of liquid flow. Further, the width and height of all the electrode sheets 40 are the same, and the length of the electrode sheets 40 in each electrolytic chamber increases in sequence in the liquid flow direction. That is, the length of the electrode plate 40 in the first electrolytic chamber 31 is smaller than that of the electrode plate 40 in the second electrolytic chamber 32, and so on, the length of the electrode plate 40 in the sixth electrolytic chamber 36 is longer than that of the electrode plates 40 in the other electrolytic chambers. Preferably, the distance between the electrode plates 40 is 2.5-3 mm. As an equivalent alternative embodiment, the area of the electrode sheet assembly in each electrolytic chamber may also be varied by varying the number of electrode sheets 40 in each electrolytic chamber.
Be equipped with division board 50 between two adjacent electrolysis chambeies, be equipped with at least one through-hole that can communicate adjacent electrolysis chamber on division board 50, this through-hole both is used for inserting electrode slice 40, also makes the electrolyte solution in the adjacent electrolysis chamber can pass through the through-hole circulation. Alternatively, a through hole elongated hole into which the electrode sheet 40 is inserted and clearance-fitted. The spacer plates may be PVC plates. Meanwhile, a sealing member 51 is provided between the edge of the partition plate 50 and the inner wall of the electrolytic bath 30. The sealing member 51 may be an elastic O-ring, and the partition plate 50 is tightly attached to the inner wall of the electrolytic bath 30 through the sealing member 51, so as to prevent the electrolytic solution from flowing through the gap between the partition plate 50 and the electrolytic bath 30. In addition, because the electrode plate 40 is in clearance fit with the through hole, the electrolytic solution and the sewage can flow to the adjacent electrolytic cavity through the through hole, so that more than 910% of the electrolytic solution and the sewage can pass through the gap between the electrode plate 40 and the through hole, and the chlorine evolution efficiency is improved.
Further as a preferred embodiment, the through holes of two adjacent partition plates 50 are distributed in a staggered manner, the electrode sheet 40 in a single electrode sheet assembly is divided into a first electrode sheet and a second electrode sheet, the first electrode sheet is fixed on one side of the electrolytic chamber, the second electrode sheet is fixed on the opposite side of the electrolytic chamber, and the first electrode sheet and the second electrode sheet are distributed in a staggered manner. Preferably, the number of the first electrode sheets is equal to that of the second electrode sheets, the first electrode sheets are fixed on the partition plate 50 on one side of the electrolysis cavity, the second electrode sheets are fixed on the other partition plate 50 on the opposite side of the electrolysis cavity, and therefore the first electrode sheets and the second electrode sheets are also distributed in a staggered manner. In addition, the first electrode sheet located in the first electrolytic chamber 31 is fixed to the electrode fixing plate 41 at a position that is staggered with respect to the through hole of the closest partition plate 50, and thus the first electrode sheet and the second electrode sheet in the first electrolytic chamber 31 are also staggered. The electrode sheet 40 in the sixth electrolytic chamber 36 is arranged in the same way as the first electrolytic chamber 31. The negative electrode connector 71 is electrically connected to the negative electrode of the constant current source 80, and the positive electrode connector 72 is electrically connected to the positive electrode of the constant current source 80. In this embodiment, the negative electrode connecting member 71 is connected to the electrode holding plate 41 of the first electrolytic chamber 31, and the positive electrode connecting member 72 is connected to the electrode holding plate 41 of the sixth electrolytic chamber 36.
Further in a preferred embodiment, the electrolytic bath 30 is provided with an inlet port 37 and an outlet port 38. The inlet 37 is located at the bottom of the electrolytic cell 30, and the outlet 38 is located at the top of the electrolytic cell 30, so as to ensure that the electrolytic solution and the sewage can fully contact and react with the electrode plates 40.
The utility model discloses the function flow is as follows: and (3) opening the third electric valve 13 and the fourth electric valve of one of the liquid inlet tanks 10, enabling sewage to enter the liquid inlet tank 10 from a sewage discharge pipeline, enabling the electrolytic solution to enter the liquid inlet tank 10 from the electrolyte supply device 20, triggering a liquid level sensor in the liquid inlet tank 10 after the liquid amount in the liquid inlet tank 10 reaches a certain height, and opening the first electric valve 11 of the liquid inlet tank 10 through an electric control system, wherein the third electric valve 13 and the fourth electric valve 14 are closed. At this time, the circulating pump 60 is started and the second electric valve 12 is opened, the mixed liquid in the liquid inlet tank 10 flows into the electrolytic cell 30 for electrochemical reaction, and continuously and circularly flows between the electrolytic cell 30 and the liquid inlet tank 10 until the ammonia nitrogen reaches 0.3 mg/L. When the treatment is completed, the liquid discharge electric valve 15 is opened, and the treated liquid flows back to the liquid inlet tank 10 and is discharged from the liquid discharge electric valve 15. And (3) opening the third electric valve 13 and the fourth electric valve 14 of the other liquid inlet tank 10 at the same time of liquid drainage, enabling the sewage and the electrolytic solution to enter the other liquid inlet tank 10, opening the second electric valve 12 of the other liquid inlet tank 10 after the liquid drainage of the liquid inlet tank 10 with the first liquid inlet is finished, and performing electrochemical reaction on the sewage in the other liquid inlet tank 10 in the same mode, so that the sewage is treated in a circulating mode. Because the two liquid inlet tanks 10 are arranged, the sewage can continuously enter the electrolytic tank 30 for electrolytic reaction, and the sewage treatment efficiency is improved.
The electrolytic solution generates chlorate under the electrochemical action, and the chlorate reacts with ammonia nitrogen, namely the wastewater is circularly treated by an electrochemical device until the ammonia nitrogen is reduced to 0.3 mg/L. The whole process only consumes electric energy and Cl-The catalyst is approximately equivalent to one catalyst in the whole reaction process, the total amount is basically not changed before and after the reaction, so that the whole reaction does not need to be added with drugs and can be completed without aeration, and meanwhile, the sodium hypochlorite also has the disinfection effect, and can ensure that the effluent disinfection index meets the relevant sanitary safety standard.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.
Claims (10)
1. The utility model provides a degradation sewage ammonia nitrogen's processing apparatus which characterized in that: the method comprises the following steps:
the liquid inlet system comprises at least two liquid inlet tanks (10), and liquid outlets and liquid inlets for introducing sewage and electrolyte are formed in the liquid inlet tanks (10);
the electrolyte supplying device (20), the electrolyte supplying device (20) is respectively communicated with the liquid inlet of each liquid inlet tank (10);
the electrochemical system comprises an electrolytic cell (30), the two ends of the electrolytic cell (30) are electrically connected, at least one electrode sheet assembly is arranged in the electrolytic cell (30), the liquid outlet of each liquid inlet tank (10) is respectively communicated with the inlet of the electrolytic cell (30) through a first pipeline, and a first electric valve (11) is arranged on each first pipeline.
2. The treatment device for degrading ammonia nitrogen in sewage according to claim 1, which is characterized in that: the electrolytic cell system is characterized by further comprising circulating pumps (60), the first pipeline of each liquid inlet tank (10) is communicated with the inlet end of each circulating pump (60), the outlet end of each circulating pump (60) is communicated with the inlet of the electrolytic cell (30), the outlet of the electrolytic cell (30) is communicated with each liquid inlet tank (10) through a second pipeline, and each second pipeline is provided with a second electric valve (12).
3. The treatment device for degrading ammonia nitrogen in sewage according to claim 2, which is characterized in that: the liquid level sensor is arranged in the liquid inlet tank (10), a liquid outlet is formed in the liquid inlet tank (10), a liquid discharge electric valve is arranged on the liquid outlet, and the liquid level sensor is electrically connected with the corresponding first electric valve (11) and the liquid discharge electric valve respectively.
4. The treatment device for degrading ammonia nitrogen in sewage according to claim 3, characterized in that: the liquid feeding and electrolyzing device (20) is respectively communicated with the liquid inlet of each liquid feeding tank (10) through a third pipeline, and each third pipeline is provided with a third electric valve (13).
5. The treatment device for degrading ammonia nitrogen in sewage according to claim 4, which is characterized in that: the automatic liquid discharging device further comprises an electric control system, and the electric control system is electrically connected with all the first electric valve (11), the second electric valve (12), the liquid discharging electric valve and the third electric valve (13).
6. The treatment device for degrading ammonia nitrogen in sewage according to any one of claims 1-5, characterized in that: a plurality of electrolytic cavities for placing the electrode plate assemblies are arranged in the electrolytic tank (30), the electrolytic cavities are connected in series, and the area of the electrode plate assemblies in each electrolytic cavity is sequentially increased along the flowing direction of liquid.
7. The treatment device for degrading ammonia nitrogen in sewage according to claim 6, characterized in that: the electrode plate assembly comprises a plurality of electrode plates (40), and the electrode plates (40) are arranged in parallel at intervals.
8. The treatment device for degrading ammonia nitrogen in sewage according to claim 7, which is characterized in that: electrode slices (40) in the electrode slice assembly are divided into a first electrode slice and a second electrode slice, the first electrode slice is fixed on one side of the electrolytic cavity, the second electrode slice is fixed on the opposite side of the electrolytic cavity, and the first electrode slice and the second electrode slice are distributed in a staggered mode.
9. The treatment device for degrading ammonia nitrogen in sewage according to claim 7, which is characterized in that: be equipped with between two adjacent electrolysis chambeies space bar (50), be equipped with at least one through-hole that can communicate adjacent electrolysis chamber on space bar (50), electrode slice (40) insert in the through-hole and with through-hole clearance fit.
10. The treatment device for degrading ammonia nitrogen in sewage according to claim 9, which is characterized in that: a sealing element (51) is arranged between the edge of the partition plate (50) and the inner wall of the electrolytic tank (30).
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| CN201922191747.0U CN211546034U (en) | 2019-12-09 | 2019-12-09 | Treatment device for degrading ammonia nitrogen in sewage |
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| CN201922191747.0U CN211546034U (en) | 2019-12-09 | 2019-12-09 | Treatment device for degrading ammonia nitrogen in sewage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110937665A (en) * | 2019-12-09 | 2020-03-31 | 广州新奥环境技术有限公司 | Treatment device for degrading ammonia nitrogen in sewage |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110937665A (en) * | 2019-12-09 | 2020-03-31 | 广州新奥环境技术有限公司 | Treatment device for degrading ammonia nitrogen in sewage |
| CN110937665B (en) * | 2019-12-09 | 2024-07-09 | 广州新奥环境技术有限公司 | Treatment device for degrading ammonia nitrogen in sewage |
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