CN216785794U

CN216785794U - Device for removing nitrate nitrogen in wastewater by electrochemical method

Info

Publication number: CN216785794U
Application number: CN202123180509.3U
Authority: CN
Inventors: 丁杰; 吴冬飞; 李瑞鹏; 李修儒; 樊剑潇
Original assignee: Jiangsu Quanzhiyuan Environmental Technology Co ltd
Current assignee: Jiangsu Quanzhiyuan Environmental Technology Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-06-21
Anticipated expiration: 2031-12-17

Abstract

The utility model discloses a device for removing nitrate nitrogen in wastewater by an electrochemical method, which comprises a reaction tank body, an adjustable direct-current power supply and a water suction pump, wherein a perforated aeration pipe is arranged at the bottom of the reaction tank body, a polar plate frame is movably arranged in the middle of the tank body, anode plates and cathode plates are arranged on the polar plate frame in parallel in a staggered mode, the anode plates and the cathode plates are respectively connected with copper bars, each anode plate is correspondingly connected with one copper bar, each cathode plate is correspondingly connected with the other copper bar, the two copper bars are respectively connected with the anode and the cathode of the adjustable direct-current power supply, a water inlet of the water suction pump is connected into a wastewater collection pool, and a water outlet of the water suction pump is connected with a water inlet pipe at the bottom of the reaction tank body. The utility model has novel structure and convenient use, can ensure the normal treatment of nitrate nitrogen in wastewater, and can meet the special requirements of users moving to different environments for use.

Description

Device for removing nitrate nitrogen in wastewater by electrochemical method

Technical Field

The utility model belongs to the field of sewage treatment, and particularly relates to a device for removing nitrate nitrogen in wastewater by an electrochemical method.

Background

At present, along with the rapid development of industry, agriculture and breeding industry and the continuous improvement of the living standard of people, the discharge amount of industrial sewage, agricultural sewage and domestic sewage is gradually increased. COD (chemical oxygen demand) in various waste water, total nitrogen content in water, grease, suspended matters and the like all cause certain harm to the ecological environment.

Nowadays, biological denitrification is the most widely used method for removing nitrate in wastewater, but the biological denitrification has certain defects, such as: poor tolerance to industrial wastewater; the limitation of the reactor causes low denitrification load; the occupied area of the biochemical process is large; the structure is complicated due to the combination of a plurality of reaction tanks; low denitrification efficiency, long retention time, etc., which limit the removal of nitrate nitrogen from the surface treatment wastewater.

Disclosure of Invention

The utility model aims to provide a device for removing nitrate nitrogen in wastewater by an electrochemical method, which overcomes the defects of biological denitrification; its advantages are high effect: the device has the advantages of short treatment time, small occupied area, simple structure, convenient operation, strong controllability, economy and applicability, and can achieve certain economic benefit and environmental protection benefit.

The technical scheme adopted by the utility model is as follows: the utility model provides a device of nitrate nitrogen in waste water is got rid of to electrochemistry method, it includes reaction cell body, adjustable DC power supply and suction pump, the perforation aeration pipe is installed to the bottom of reaction cell body, and inslot middle part movable mounting has a polar plate frame, install anode plate and negative plate on the polar plate frame side by side, anode plate and the crisscross setting of negative plate mutual interval to anode plate and negative plate are equallyd divide and are do not connect the copper bar, and wherein each anode plate corresponds connects a copper bar, and each negative plate corresponds connects another copper bar, two copper bars respectively with adjustable DC power supply's positive negative pole is connected, the water inlet of suction pump inserts waste water collecting pit, and the inlet tube of reaction cell body bottom is connected to the delivery port.

Furthermore, the two ends of the polar plate frame are provided with an inlet end and an outlet end, polar plate slots are correspondingly formed in the frame plates at the inlet end and the outlet end, and the anode plates and the cathode plates are alternately inserted into the polar plate slots in a staggered mode.

Furthermore, the frame plate at the inlet end is higher than the frame plate at the outlet end, and gaps are reserved between the frame plate at the inlet end and the frame plate at the outlet end and the inner wall of the reaction tank body.

Furthermore, the water inlet pipe is arranged at the bottom of the reaction tank body close to one side of the inlet end, and the water inlet pipe is of a T-shaped pipe structure.

Furthermore, the bottom of the polar plate frame is provided with a groove for a perforated aeration pipe to pass through, and the perforated aeration pipe is led out of the reaction tank body from a gap on one side of the outlet end; the aeration pipe is arranged to ensure that the process of electrochemical removal of nitrate nitrogen can be reacted uniformly.

Furthermore, an overflow port is formed in the inner wall of one side, close to the outlet end, of the reaction tank body, and an overflow hopper is welded to the inner wall of the tank body at the overflow port.

Furthermore, the overflow end of the overflow hopper is higher than the outlet end of the polar plate frame and lower than the inlet end of the polar plate frame.

Furthermore, limiting strips are arranged on the inner walls of the reaction tank body, which are close to the four end corners of the polar plate frame, and the polar plate frame can be movably arranged along the limiting strips in a drawing mode; therefore, the polar plate frame can be conveniently and quickly taken out and fixed in position, bottom sediments can be conveniently cleaned, and the bottom sediments are discharged from a bottom sewage discharge outlet.

Furthermore, a gas-collecting hood is installed at the top of the reaction tank body, and an exhaust pipe is installed on the gas-collecting hood, so that waste gas generated in the electrochemical process can be collected and conveyed to a corresponding waste gas tower for treatment in a unified mode.

Furthermore, the reaction tank body is arranged on a movable trolley with a foot brake, a support frame is arranged on the trolley, a plurality of layers of support plates are arranged on the support frame, the adjustable direct-current power supply and the water suction pump are arranged on different support plates, and the adjustable direct-current power supply is connected with a power supply wiring board.

Compared with the prior art, the utility model has the beneficial effects that: novel structure, convenient use, small occupied area, short processing time and the like. The device utilizes the water pump to input surface treatment wastewater, and forms a reaction process for removing nitrate nitrogen by an electrochemical method through the electrified positive and negative electrode plates, so that a complex structure can be avoided, and the device can be moved to meet special use requirements of users.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of a reaction tank according to the present invention;

FIG. 3 is a plan view of a reaction tank according to the present invention;

FIG. 4 is a schematic diagram of a frame structure of a polar plate according to the present invention;

FIG. 5 is a sectional view of a reaction tank in the present invention.

In the figure: 1. a cart; 2. a reaction tank body; 3. perforating an aeration pipe; 4. a gas-collecting hood; 5. copper bars; 6. an adjustable DC power supply; 7. a support frame; 8. a water pump; 9. a power supply wiring board; 10. an anode plate; 11. a limiting strip; 12. a cathode plate; 13. a water inlet pipe; 14. an overflow hopper; 15. a polar plate frame; 16-an inlet end; 17-an outlet end; 18-plate slot.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, an embodiment of the present invention is shown: a device for removing nitrate nitrogen in wastewater by an electrochemical method comprises a trolley 1, a reaction tank body 2, an adjustable direct current power supply 6 and a water pump 8, wherein the reaction tank body 2, the adjustable direct current power supply 6 and the water pump 8 are all arranged on the trolley 1; the bottom of the reaction tank body 2 is provided with two perforated aeration pipes 3, the middle part in the tank is movably provided with a polar plate frame 15, the polar plate frame 15 is provided with an anode plate 10 and a cathode plate 12 in parallel, the anode plate 10 and the cathode plate 12 are arranged at intervals in a staggered manner, and the anode plate 10 and the cathode plate 12 are respectively connected with copper bars 5, wherein each anode plate 10 is correspondingly connected with one copper bar 5, each cathode plate 12 is correspondingly connected with the other copper bar 5, the two copper bars 5 are respectively connected with the positive and negative poles of the adjustable direct current power supply 6, and the adjustable direct current power supply 6 is simultaneously connected with a power supply wiring board 9; the water inlet of the water suction pump 8 is connected to the wastewater collecting tank, the water outlet is connected with the water inlet pipe 13 at the bottom of the reaction tank body 2, and wastewater to be treated is pumped into the reaction tank body.

In this embodiment, two ends of the polar plate frame 15 are provided with an inlet end 16 and an outlet end 17, polar plate slots 18 are correspondingly formed in the frame plates of the inlet end 16 and the outlet end 17, and the anode plates 10 and the cathode plates 12 are alternately inserted into the polar plate slots 18 at intervals. Meanwhile, the frame plate of the inlet end 16 is higher than the frame plate of the outlet end 17, and gaps are reserved between the frame plate of the inlet end 16 and the frame plate of the outlet end 17 and the inner wall of the reaction tank body. The inlet pipe 13 is arranged at the bottom of the reaction tank body close to one side of the inlet end 16, an overflow port is formed in the inner wall of the tank body close to one side of the outlet end 17, an overflow hopper 14 is welded to the inner wall of the tank body at the overflow port, and the overflow end of the overflow hopper 14 is higher than the outlet end 17 of the polar plate frame and slightly lower than the inlet end 16 of the polar plate frame. Therefore, the wastewater entering from the water inlet pipe 13 can only flow through the gap of the inner polar plate of the frame and then flows out from the overflow port, and meanwhile, the electrode plate is convenient to replace due to the embedded electrode structure.

In this embodiment, the bottom of the polar plate frame 15 is provided with a groove for the perforated aeration pipes to pass through, and the two perforated aeration pipes 3 are led out from the gap at one side of the outlet end to the outside of the reaction tank body; the aeration pipe 3 is arranged to ensure that the electrochemical nitrate nitrogen removal process can react uniformly.

In this embodiment, the inner walls of the reaction tank body close to the four end corners of the polar plate frame 15 are provided with the limiting strips 11, and the polar plate frame 15 is movably installed along the limiting strips 11 in a drawing manner; therefore, the polar plate frame 15 can be conveniently taken out and fixed in position, bottom sediments can be conveniently cleaned, and the sediments are discharged from a sewage outlet at the bottom of the tank body.

In this embodiment, the gas collecting channel 4 is installed at the top of the reaction tank body, and the exhaust pipe is installed on the gas collecting channel 4, so that the exhaust gas generated in the electrochemical process can be collected and conveyed uniformly to the corresponding exhaust gas tower for treatment.

In this embodiment, inlet tube 13 is by two water pipe T shape welding, and the horizontal water pipe both ends plug welding in the groove, and the water pipe lateral wall is evenly perforated, can avoid intaking like this and get into the cell body reaction from single straight line direction, ensures the regional abundant electrochemical reaction of each plate electrode.

In this embodiment, handcart 1 is portable and take the foot to stop, still installs support frame 7 simultaneously on handcart 1, is equipped with the multilayer backup pad on support frame 7, adjustable DC power supply 6 and suction pump 8 set up in different backup pads. All parts are integrally installed on the trolley 1, and the special requirements that a user moves to different environments for use can be met.

The working process and principle of the device are as follows: the power supply wiring board 9 is connected with a power supply box and supplies power to the adjustable direct current power supply 6 and the water suction pump 8, the water inlet end of the water suction pump 8 extends into the wastewater tank, the water outlet end of the water suction pump 8 is connected with the bottom water inlet pipe 13 of the reaction tank body 2, the positive pole and the negative pole of the adjustable direct current power supply 6 are in bolt connection with the anode plate 10 and the cathode plate 12 through the copper bar 5, and sufficient reaction current of the electrode plates is supplied; along with the continuous input of the waste water into the trough of the inlet pipe 13, the liquid level in the trough rises continuously, when reaching the position of the overflow hopper 14, the waste water flows out from the overflow port, and there is a water flowing direction towards the overflow port end, so that the process of the waste water from the water inlet end to the water outlet end must pass through the gap between the pole plates in the frame, the water inlet end and the water outlet end are arranged one above the other, the reaction path is longer, and the reaction process is more fully carried out, the perforated aeration pipe 3 is arranged at the bottom position in the trough, so that the waste water in the trough is more fully contacted with the pole plates, the electrochemical removal of nitrate nitrogen reaction is more uniform, and the gas collecting hood 4 at the top can collect the waste gas generated in the reaction process and convey the waste gas to the corresponding waste gas tower for treatment; after the reaction is finished, the waste water in the tank can be recycled to a waste water tank through a water outlet pipe arranged at the bottom of the tank body, and the polar plate frame can be drawn out, so that the tank can be cleaned conveniently.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above-mentioned embodiments do not limit the scope of the present invention in any way, and all technical solutions obtained by using equivalent substitution modes and the like fall within the scope of the present invention.

The parts not involved in the present invention are the same as or can be implemented using the prior art.

Claims

1. The utility model provides a device for nitrate nitrogen in waste water is got rid of to electrochemistry method, a serial communication port, including reaction cell body, adjustable DC power supply and suction pump, the perforation aeration pipe is installed to the bottom of reaction cell body, and inslot middle part movable mounting has a polar plate frame, install anode plate and negative plate on the polar plate frame side by side, anode plate and the crisscross setting of negative plate mutual interval to anode plate and negative plate are equallyd divide and are do not connected the copper bar, and wherein a copper bar is connected to each anode plate correspondence, and another copper bar is connected to each negative plate correspondence, two copper bars respectively with adjustable DC power supply's positive negative pole is connected, the water inlet of suction pump inserts waste water collecting pit, the inlet tube of reaction cell body bottom is connected to the delivery port.

2. The device for removing nitrate nitrogen in wastewater by an electrochemical method according to claim 1, wherein the two ends of the polar plate frame are provided with an inlet end and an outlet end, polar plate slots are correspondingly formed in the frame plates at the inlet end and the outlet end, and the anode plates and the cathode plates are alternately inserted into the polar plate slots at intervals.

3. The device for electrochemically removing nitrate nitrogen from wastewater according to claim 2, wherein the inlet end frame plate is higher than the outlet end frame plate, and a gap is left between the inlet end frame plate and the outlet end frame plate and the inner wall of the reaction tank body.

4. The device for electrochemically removing nitrate nitrogen from wastewater as claimed in claim 2 or 3, wherein the water inlet pipe is arranged at the bottom of the reaction tank body on the side close to the inlet end, and the water inlet pipe is in a T-shaped pipe structure.

5. The device for removing nitrate nitrogen in wastewater by an electrochemical method according to claim 3, wherein the bottom of the polar plate frame is provided with a groove for a perforated aeration pipe to pass through, and the perforated aeration pipe is led out from a gap at one side of an outlet end to the outside of the reaction tank body.

6. The device for removing nitrate nitrogen in wastewater by an electrochemical method according to claim 3, wherein an overflow port is formed on the inner wall of the reaction tank body on one side close to the outlet end, and an overflow hopper is welded on the inner wall of the tank body at the overflow port.

7. The device for electrochemically removing nitrate nitrogen from wastewater as claimed in claim 6, wherein the overflow end of the overflow hopper is higher than the outlet end of the plate frame and lower than the inlet end of the plate frame.

8. The device for removing nitrate nitrogen in wastewater by an electrochemical method according to claim 1, wherein the inner walls of the reaction tank body, which are close to the four end corners of the polar plate frame, are provided with limiting strips, and the polar plate frame can be movably installed along the limiting strips in a drawing manner.

9. The device for removing nitrate nitrogen in wastewater by an electrochemical method according to claim 1, wherein a gas-collecting hood is installed at the top of the reaction tank body, and an exhaust pipe is installed on the gas-collecting hood.

10. The device for removing nitrate nitrogen in wastewater by an electrochemical method according to claim 1, wherein the reaction tank body is arranged on a movable trolley with a foot brake, a support frame is also arranged on the trolley, a plurality of layers of support plates are arranged on the support frame, the adjustable direct current power supply and the water suction pump are arranged on different support plates, and the adjustable direct current power supply is simultaneously connected with a power supply wiring board.