CN111943329A - High-chlorine high-ammonia nitrogen wastewater treatment device with three-dimensional electrode - Google Patents

Abstract

The invention provides a high-chlorine and high-ammonia-nitrogen wastewater treatment device with three-dimensional electrodes, comprising an electrolytic cell, an anode electrode and a cathode electrode. The anode electrode includes a plurality of anode plates arranged in parallel, and the cathode electrode includes a plurality of cathode plates arranged in parallel. The cathode plates are staggered from each other, and the anode plate and the cathode plate are filled with activated carbon and insulating particles in a volume ratio of 1:1 as the third pole of complex polarity. The openings between the anode plate and the cathode plate are closed by an insulating screen , an ultrasonic rod is set in the electrolytic cell. The pleiotropic third pole can adsorb organic matter, and is not affected by the adsorption saturation through the adsorption and degradation cycle; the effective reaction surface area per unit volume of the electrolytic cell is improved, the mass transfer effect is enhanced, and the efficiency of wastewater treatment is improved. ; Reduce the generation of short-circuit current and improve the current efficiency. In addition, an ultrasonic rod is arranged to improve the utilization rate of active groups generated by electrolysis through ultrasonic action, and improve the treatment efficiency of wastewater.

Description

High chlorine and high ammonia nitrogen wastewater treatment device with three-dimensional electrode

technical field

The invention relates to the field of wastewater treatment, in particular to a high-chlorine and high-ammonia-nitrogen wastewater treatment device with three-dimensional electrodes.

Background technique

Ammonia nitrogen is one of the important factors causing water eutrophication. With the increasing standards of wastewater discharge, the requirements and demands for removing residual ammonia nitrogen in wastewater are getting higher and higher. There are many methods for removing ammonia nitrogen from industrial wastewater, and the breakpoint chlorination method is often used because of its simplicity. In the prior art, since the liquid contains a lot of ammonia nitrogen components, the difficulty of manual treatment is increased, such as the phenomenon of unpleasant smell and high odor concentration.

Electrocatalytic oxidation technology degrades organic pollutants in wastewater by generating strong oxidative active groups such as hydroxyl radicals. It has the characteristics of no secondary pollution, low cost, strong applicability and high efficiency. It has application potential in the degradation of wastewater.

However, the direct electrolysis method has high energy consumption and low efficiency for ammonia nitrogen wastewater.

SUMMARY OF THE INVENTION

In view of the deficiencies in the prior art, the purpose of the present invention is to provide a high-chlorine and high-ammonia-nitrogen wastewater treatment device with three-dimensional electrodes, which consumes less energy and has high treatment efficiency.

The above-mentioned technical purpose of the present invention is achieved through the following technical solutions: a high-chlorine and high-ammonia-nitrogen wastewater treatment device with three-dimensional electrodes, comprising an electrolytic cell, an anode electrode and a cathode electrode located in the electrolytic cell, and the anode electrode is a chlorine-evolution Type DSA electrode, the cathode electrode is a titanium plate or a stainless steel plate or a graphite plate, the anode electrode is formed by connecting a plurality of parallel anode plates through connecting anode plates, and the cathode electrode is formed by a plurality of parallel cathode plates. It is formed by connecting negative plates. The anode plates are inserted into the cathode plates and arranged to be staggered from each other. The anode plate and the cathode plate are filled with activated carbon and insulating particles in a volume ratio of 1:1 as the third pole of complex polarity. The openings between the plate and the cathode plate are all closed by an insulating screen, and an ultrasonic rod is arranged in the electrolytic cell, which is located beside the anode electrode and the cathode electrode.

The effect of the pleiotropic third pole has the following three points: First, it has a certain adsorption effect. The strong adsorption of activated carbon can make the organic matter adsorb on its surface, and then the organic matter adsorbed on the surface is oxidized and degraded under the action of the electric field, and then the organic matter is adsorbed on the surface. It continues to be adsorbed on the surface of activated carbon, so adsorption-degradation-adsorption is not affected by the adsorption saturation; secondly, the effective reaction surface area per unit volume of the electrolytic cell is improved, and the mass transfer effect is enhanced, which is conducive to the improvement of wastewater treatment efficiency. ; Third, the generation of short-circuit current is reduced, and the current efficiency is improved. In addition, an ultrasonic rod is arranged to improve the utilization rate of active groups generated by electrolysis through ultrasonic action, and improve the treatment efficiency of wastewater.

The openings between the anode plate and the cathode plate are closed by the insulating separator, so that the activated carbon and insulating particles are confined in the filling space formed by the anode plate, the cathode plate and the insulating separator, so that the waste water does not affect the filler when it flows. There will be an impact, and the waste water can enter the packing through the mesh of the insulating screen.

Further, the electrolytic cell is also provided with a scum cleaning device and a scum accumulation device, the scum accumulation device includes a water inlet pipe, a water pump and a water outlet pipe connected in sequence, and the end of the water inlet pipe away from the water pump is inserted into the electrolytic cell. waste water, and one end of the water inlet pipe inserted into the waste water is fixed with a filter screen, and the water outlet pipe is arranged at one end of the electrolytic cell away from the water inlet pipe; the scum collection device includes a scum collection filter bucket, a mounting plate fixed on the electrolytic cell, The installation column fixed on the installation plate and the hoist fixed on the installation column, the pulling rope of the hoist is fixed with the scum collection filter hopper, the scum collection filter hopper is in contact with the side wall of the electrolytic cell, and the scum collection filter The bucket is located at one end of the water inlet pipe, and the scum collection filter bucket is provided with a through hole for the water inlet pipe to pass through.

When the water pump starts, water enters from the water inlet pipe, and the water outlet pipe returns to the electrolytic cell. The scum is collected on one side of the water inlet pipe under the influence of the water flow, and then the scum collection filter bucket is lifted by the winch to remove the scum.

Further, a motor is fixed on the mounting plate, a connecting rod is fixed on the output shaft of the motor, and a top block is fixed on the connecting rod.

When the scum collection filter hopper reaches the top of the electrolytic cell, the motor starts to drive the connecting rod, the connecting rod rotates to drive the top block, and the top block drives the scum collection filter hopper to rotate, so that the scum is poured out.

Further, an aeration device is installed at the bottom of the electrolytic cell, and the aeration device includes an aeration pipe and an air compressor connected to the aeration pipe. A plurality of the aeration pipes are arranged in the electrolytic cell.

Aeration is conducive to uniform water quality and prevents electrode scaling.

Further, the electrolytic cell is provided with a scum collection tank on one side of the water inlet pipe, and the water inlet pipe passes through the scum collection tank.

To sum up, the present invention has the following beneficial effects: the present invention effectively improves wastewater treatment efficiency, saves energy, and at the same time facilitates and quickly cleans scum.

Description of drawings

Fig. 1 is the structural representation of embodiment;

Fig. 2 is the structural representation of electrolytic cell;

FIG. 3 is a state diagram when scum is removed.

Reference numerals: 1. Electrolysis cell; 2. Anode electrode; 21. Anode plate; 22. Connecting anode plate; 3. Cathode electrode; 31. Cathode plate; 32. Connecting cathode plate; 4. Ultrasonic rod; 51. Water inlet pipe ;52, water pump; 53, water outlet pipe; 6, scum collection filter bucket; 71, mounting plate; 72, mounting column; 73, winch; 81, motor; 82, connecting rod; 83, top block; 91, aeration pipe; 92, air compressor; 93, scum collection tank; 10, insulating screen.

Detailed ways

This specific embodiment is only an explanation of the present invention, and it does not limit the present invention. Those skilled in the art can make modifications without creative contribution to the present embodiment as required after reading this specification, but as long as the rights of the present invention are used All claims are protected by patent law.

A high-chlorine and high-ammonia-nitrogen wastewater treatment device with a three-dimensional electrode, comprising an electrolytic cell 1, an anode electrode 2 and a cathode electrode 3 located in the electrolytic cell 1, the anode electrode 2 is a chlorine-evolution DSA electrode, and the cathode electrode 3 For titanium plate or stainless steel plate or graphite plate. The anode electrode 2 is formed by connecting a plurality of parallel anode plates 21 through connecting anode plates 22, and both anode plates 21 and connecting anode plates 22 are iron plates. The cathode electrode 3 is formed by connecting a plurality of parallel cathode plates 31 through connecting cathode plates 32 , and both the cathode plates 31 and the connecting cathode plates 32 are carbon plates. The anode plate 21 is inserted into the cathode plate 31 and arranged staggered from each other. The anode plate 21 and the cathode plate 31 are filled with activated carbon and insulating particles in a volume ratio of 1:1 as the third pole of the complex polarity, and the insulating particles are TO insulating particles. The opening portions between the anode plate 21 and the cathode plate 31 are all closed by the insulating screen 10 . An ultrasonic rod 4 is arranged in the electrolytic cell 1 , and the ultrasonic rod 4 is located beside the anode electrode 2 and the cathode electrode 3 .

The electrolytic cell 1 is also provided with a scum cleaning device and a scum accumulation device. The scum accumulation device includes a water inlet pipe 51, a water pump 52 and a water outlet pipe 53 connected in sequence, and the end of the water inlet pipe 51 away from the water pump 52 is close to the electrolysis device. The inner wall of the pool 1 is inserted into the waste water of the electrolysis cell 1, and one end of the water inlet pipe 51 inserted into the waste water is fixed with a filter screen, which ensures that the water pump 52 can pump water smoothly. The water outlet pipe 53 is arranged at one end of the electrolytic cell 1 away from the water inlet pipe 51 . The height of the water outlet of the water outlet pipe 53 is higher than that of the water inlet of the water inlet pipe 51 .

The scum collection device includes a scum collection filter hopper 6, a mounting plate 71 fixed on the electrolytic cell 1, a mounting column 72 fixed on the mounting plate 71, and a hoist 73 fixed on the mounting column 72. The rope is fixed with the scum collection filter hopper 6, the scum collection filter hopper 6 is located at one end of the water inlet pipe 51, the scum collection filter hopper 6 is in contact with the side wall of the electrolytic cell 1, and the scum collection filter hopper 6 is opposite to the water inlet pipe 51. The opening of the pool wall close to one side is arranged, and the other three sides are formed with side walls, which is convenient for the scum dumping. The scum collection filter hopper 6 has a through hole for the water inlet pipe 51 to pass through. A motor 81 is fixed on the mounting plate 71 , a connecting rod 82 is fixed on the output shaft of the motor 81 , and a top block 83 is fixed on the connecting rod 82 .

An aeration device is installed at the bottom of the electrolytic cell 1 , and the aeration device includes an aeration pipe 91 and an air compressor 92 connected to the aeration pipe 91 . The aeration pipes 91 extend through the electrolytic cell 1 into the waste water, and a plurality of aeration pipes 91 are arranged in the electrolytic cell 1 . The electrolytic cell 1 is provided with a scum collection tank 93 on one side of the water inlet pipe 51 , and the water inlet pipe 51 passes through the scum collection tank 93 .

The water pump 52 is started, the water enters from the water inlet pipe 51, the water outlet pipe 53 returns to the electrolytic cell 1, and the scum is collected on one side of the water inlet pipe 51 under the influence of the water flow, and then the scum collection filter hopper 6 is hoisted by the hoist 73. When the scum collection filter hopper 6 reaches the top of the electrolytic cell 1, the motor 81 starts to drive the connecting rod 82, the connecting rod 82 rotates and drives the top block 83, and the top block 83 drives the scum collection filter hopper 6 to rotate, so that the scum is poured out into the float Slag collection tank 93.

Claims (7)

1. A high-chlorine and high-ammonia-nitrogen wastewater treatment device with three-dimensional electrode, comprising an electrolytic cell (1), an anode electrode (2) and a cathode electrode (3) positioned in the electrolytic cell (1), the anode electrode (2) It is a chlorine-dissolving type DSA electrode, and the cathode electrode (3) is a titanium plate or a stainless steel plate or a graphite plate, and it is characterized in that: the anode electrode (2) is connected by a plurality of parallel anode plates (21) by connecting the anode plates. (22) connected, the cathode electrode (3) is formed by connecting a plurality of parallel cathode plates (31) by connecting the cathode plates (32), and the anode plate (21) is inserted into the cathode plate (31) They are arranged staggered from each other, and the anode plate (21) and the cathode plate (31) are filled with activated carbon and insulating particles in a volume ratio of 1:1 as the third pole of complex polarity, the anode plate (21) and the cathode plate (31). 31) The openings between are all closed by the insulating screen (10), an ultrasonic rod (4) is arranged in the electrolytic cell (1), and the ultrasonic rod (4) is located beside the anode electrode (2) and the cathode electrode (3) . 2. The high-chlorine and high-ammonia-nitrogen wastewater treatment device with three-dimensional electrode according to claim 1, characterized in that: the electrolytic cell (1) is also provided with a scum cleaning device and a scum gathering device, and the scum gathering device comprises: The water inlet pipe (51), the water pump (52) and the water outlet pipe (53) are connected in sequence, and one end of the water inlet pipe (51) away from the water pump (52) is inserted into the waste water of the electrolytic cell (1), and the water inlet pipe (51) A filter screen is fixed at one end inserted into the waste water, and the water outlet pipe (53) is arranged at one end of the electrolytic cell (1) away from the water inlet pipe (51); The mounting plate (71) on the electrolytic cell (1), the mounting column (72) fixed on the mounting plate (71), and the hoist (73) fixed on the mounting column (72), the The rope is fixed with the scum collection filter hopper (6), the scum collection filter hopper (6) is in contact with the side wall of the electrolytic cell (1), and the scum collection filter hopper (6) is located at one end of the water inlet pipe (51). The scum collection filter hopper (6) is provided with a through hole for the water inlet pipe (51) to pass through. 3. The high-chlorine and high-ammonia-nitrogen wastewater treatment device with three-dimensional electrodes according to claim 2, wherein a motor (81) is fixed on the mounting plate (71), and a motor (81) is fixed on the output shaft of the motor (81). A connecting rod (82), a top block (83) is fixed on the connecting rod (82). 4. The high-chlorine and high-ammonia nitrogen wastewater treatment device with three-dimensional electrode according to claim 1, characterized in that: an aeration device is installed at the bottom of the electrolytic cell (1), and the aeration device comprises an aeration pipe (91), and The air compressor (92) to which the aeration pipe (91) is connected. 5. The high-chlorine and high-ammonia-nitrogen wastewater treatment device with three-dimensional electrodes according to claim 4, characterized in that: a plurality of said aeration pipes (91) are arranged in the electrolytic cell (1). 6. The high-chlorine and high-ammonia-nitrogen wastewater treatment device with three-dimensional electrodes according to claim 3, wherein the electrolytic cell (1) is provided with a scum collection tank (93) on one side of the water inlet pipe (51). 7. The high-chlorine and high-ammonia-nitrogen wastewater treatment device with three-dimensional electrodes according to claim 6, wherein the water inlet pipe (51) passes through the scum collection tank (93).

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