CN111943329A

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

Info

Publication number: CN111943329A
Application number: CN202010873397.0A
Authority: CN
Inventors: 叶芳芳; 李长刚; 张帅; 李阳; 杨振兴; 谢文玉; 李德豪
Original assignee: Guangdong University of Petrochemical Technology
Current assignee: Guangdong University of Petrochemical Technology
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2020-11-17

Abstract

The invention provides a high-chlorine high-ammonia nitrogen wastewater treatment device with a three-dimensional electrode, which comprises an electrolytic cell, an anode electrode and a cathode electrode, wherein the anode electrode comprises a plurality of anode plates arranged in parallel, the cathode electrode comprises a plurality of cathode plates arranged in parallel, the anode plates are inserted into the cathode plates and staggered with each other, and the ratio of the anode plates to the cathode plates is 1: 1, filling activated carbon and insulating particles in a volume ratio to serve as a bipolar third pole, sealing an opening part between the anode plate and the cathode plate through an insulating separation net, and arranging an ultrasonic rod in the electrolytic cell. The bipolar third pole can adsorb organic matters and is not influenced by adsorption saturation amount in a cyclic mode of adsorption and degradation; the effective reaction surface area of the electrolytic cell in unit volume is increased, the mass transfer effect is enhanced, and the improvement of the wastewater treatment efficiency is facilitated; the short-circuit current is reduced, and the current efficiency is improved. And the ultrasonic bar is arranged, so that the utilization rate of active groups generated by electrolysis is improved through the ultrasonic action, and the treatment efficiency of wastewater is improved.

Description

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

Background

Ammonia nitrogen is one of the important factors causing water eutrophication, and with the increasing wastewater discharge standard, the requirement and the demand for removing residual ammonia nitrogen in wastewater are higher and higher. There are several methods for removing ammonia nitrogen from industrial wastewater, and the breakpoint chlorination method is often used because of its simplicity and feasibility. In the prior art, the liquid contains more ammonia nitrogen components, so that the manual treatment difficulty is increased, such as the phenomenon of bad smell and high smell concentration.

The electrocatalytic oxidation technology degrades organic pollutants in the wastewater by generating active groups with strong oxidizability such as hydroxyl radicals and the like, has the characteristics of no secondary pollution, low cost, strong applicability, high efficiency and the like, and has application potential in the aspect of treating wastewater with high concentration and difficult biochemical degradation.

But the energy consumption is high by directly adopting an electrolysis mode, and the efficiency for ammonia nitrogen wastewater is lower.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a high-chlorine high-ammonia nitrogen wastewater treatment device with a three-dimensional electrode, which is low in energy consumption and high in treatment efficiency.

The technical purpose of the invention is realized by the following technical scheme: the utility model provides a take high ammonia-nitrogen concentration wastewater treatment device of high chlorine of three-dimensional electrode, includes the electrolytic bath, is located positive pole electrode and the negative pole electrode in the electrolytic bath, positive pole electrode is chlorine evolution type DSA electrode, the negative pole electrode is titanium board or corrosion resistant plate or graphite plate, positive pole electrode is formed by connecting the positive plate through connecting the positive plate connection by polylith parallel arrangement's positive plate, negative pole electrode is formed by connecting the negative plate of polylith parallel arrangement, the positive plate inserts the setting of staggering each other in the negative plate, with 1 between positive plate and the negative plate: 1 volume ratio filling active carbon and insulating particles as a bipolar third pole, the opening part between the anode plate and the cathode plate is sealed by an insulating separation net, and an ultrasonic bar is arranged in the electrolytic cell and positioned beside the anode electrode and the cathode electrode.

The bipolar third pole has the following three functions: firstly, the organic matters are adsorbed on the surface of the activated carbon due to the strong adsorbability of the activated carbon, then the organic matters adsorbed on the surface are oxidized and degraded under the action of an electric field, and then the organic matters are continuously adsorbed on the surface of the activated carbon, so that the adsorption, degradation and adsorption are not influenced by adsorption saturation; secondly, the effective reaction surface area of the electrolytic cell in unit volume is increased, the mass transfer effect is enhanced, and the improvement of the wastewater treatment efficiency is facilitated; thirdly, the generation of short-circuit current is reduced, and the current efficiency is improved. And the ultrasonic bar is arranged, so that the utilization rate of active groups generated by electrolysis is improved through the ultrasonic action, and the treatment efficiency of wastewater is improved.

The opening part between the anode plate and the cathode plate is sealed by the insulating separation net, so that the activated carbon and the insulating particles are limited in the filling space formed by the anode plate, the cathode plate and the insulating separation net, the filler is not influenced by the wastewater when the wastewater flows, and meanwhile, the wastewater can enter the filler through the meshes of the insulating separation net.

Furthermore, the electrolytic cell is also provided with a scum cleaning device and a scum gathering device, the scum gathering device comprises a water inlet pipe, a water pump and a water outlet pipe which are sequentially connected, one end of the water inlet pipe, which is far away from the water pump, is inserted into the wastewater of the electrolytic cell, a filter screen is fixed at one end of the water inlet pipe, which is inserted into the wastewater, and the water outlet pipe is arranged at one end of the electrolytic cell, which is far away from the water inlet pipe; the dross collection device includes that the dross collects the filter funnel, fixes mounting panel on the electrolytic bath, fixes the erection column on the mounting panel, fixes the hoist engine on the erection column, the filter funnel is collected with the dross to the stay cord of hoist engine fixed, the dross is collected filter funnel and electrolytic bath lateral wall butt, and the dross is collected the filter funnel and is located inlet tube one end, the dross is collected the filter funnel and is seted up the through-hole that supplies the inlet tube to pass.

The water pump is started, water enters from the water inlet pipe, the water outlet pipe flows back to the electrolytic cell, scum is gathered on one side of the water inlet pipe under the influence of water flow, and then the scum is collected by the scum collection filter bucket through the winch to be lifted to remove the scum.

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

When the dross is collected the filter funnel and is arrived the electrolytic bath top, the motor starts to drive the connecting rod, and the connecting rod rotates and drives the kicking block, and the kicking block drives the dross and collects the filter funnel rotation for the dross is emptyd out.

Furthermore, an aeration device is arranged at the bottom of the electrolytic tank, and the aeration device comprises an aeration pipe and an air compressor connected with the aeration pipe. The aeration pipes are arranged in the electrolytic cell in a plurality.

Aeration is beneficial to uniform water quality, and scaling of the electrode is prevented.

Furthermore, the electrolytic cell is provided with a scum collecting tank on one side of the water inlet pipe, and the water inlet pipe penetrates through the scum collecting tank.

In conclusion, the invention has the following beneficial effects: the invention effectively improves the wastewater treatment efficiency, saves energy and simultaneously conveniently and quickly cleans scum.

Drawings

FIG. 1 is a schematic structural view of an embodiment;

FIG. 2 is a schematic diagram of the construction of the electrolytic cell;

fig. 3 is a diagram showing a state when scum is removed.

Reference numerals: 1. an electrolytic cell; 2. an anode electrode; 21. an anode plate; 22. connecting the male plate; 3. a cathode electrode; 31. a cathode plate; 32. connecting the female plate; 4. an ultrasonic bar; 51. a water inlet pipe; 52. a water pump; 53. a water outlet pipe; 6. a scum collecting filter funnel; 71. mounting a plate; 72. mounting a column; 73. a winch; 81. a motor; 82. a connecting rod; 83. a top block; 91. an aeration pipe; 92. an air compressor; 93. a scum collecting tank; 10. an insulating spacer mesh.

Detailed Description

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

The high-chlorine high-ammonia-nitrogen wastewater treatment device with the three-dimensional electrode comprises an electrolytic cell 1, and an anode electrode 2 and a cathode electrode 3 which are positioned in the electrolytic cell 1, wherein the anode electrode 2 is a chlorine evolution type DSA electrode, and the cathode electrode 3 is a titanium plate, a stainless steel plate or a graphite plate. The anode electrode 2 is formed by connecting a plurality of anode plates 21 arranged in parallel through connecting anode plates 22, and the anode plates 21 and the connecting anode plates 22 are iron plates. The cathode electrode 3 is formed by connecting a plurality of cathode plates 31 arranged in parallel through connecting cathode plates 32, and the cathode plates 31 and the connecting cathode plates 32 are carbon plates. The anode plates 21 are inserted into the cathode plates 31 and arranged in a staggered mode, and the anode plates 21 and the cathode plates 31 are arranged in a mode that the ratio of 1: 1 volume ratio of active carbon and insulating particles are filled TO form a bipolar third pole, the insulating particles are TO insulating particles, and the opening part between the anode plate 21 and the cathode plate 31 is sealed by the insulating separation net 10. An ultrasonic bar 4 is arranged in the electrolytic cell 1, and the ultrasonic bar 4 is positioned beside the anode electrode 2 and the cathode electrode 3.

Electrolytic cell 1 still sets up a dross cleaning device and dross gathering device, dross gathering device is including the inlet tube 51, water pump 52 and the outlet pipe 53 that connect gradually, the one end that water pump 52 was kept away from to inlet tube 51 is hugged closely in 1 inner wall of electrolytic cell inserts the waste water of electrolytic cell 1, and the fixed filter screen of one end that inlet tube 51 inserted in the waste water, and the filter screen guarantees that water pump 52 draws water smoothly. The outlet pipe 53 is arranged at the end of the electrolytic cell 1 remote from the inlet pipe 51. The water outlet of the water outlet pipe 53 is higher than the water inlet of the water inlet pipe 51.

Dross collection device includes that dross collects filter funnel 6, fixes mounting panel 71 on electrolytic bath 1, fixes erection column 72 on mounting panel 71, fixes hoist engine 73 on erection column 72, the filter funnel 6 is fixed to the stay cord of hoist engine 73 and dross, and dross is collected filter funnel 6 and is located inlet tube 51 one end, dross is collected filter funnel 6 and 1 lateral wall butt of electrolytic bath, and dross is collected filter funnel 6 and is hugged closely the pool wall opening setting of one side relatively with inlet tube 51, and all the other trilaterals all form the lateral wall, so make things convenient for the dross to empty. The scum collecting filter funnel 6 is provided with a through hole through which the water inlet pipe 51 passes. A motor 81 is fixed on the mounting plate 71, a connecting rod 82 is fixed on an output shaft of the motor 81, and a top block 83 is fixed on the connecting rod 82.

The bottom of the electrolytic tank 1 is provided with an aeration device, and the aeration device comprises an aeration pipe 91 and an air compressor 92 connected with the aeration pipe 91. The aeration pipe 91 penetrates through the electrolytic tank 1 and extends into the wastewater, and a plurality of aeration pipes 91 are arranged in the electrolytic tank 1. The electrolytic cell 1 is provided with a scum collecting tank 93 at one side of the water inlet pipe 51, and the water inlet pipe 51 passes through the scum collecting tank 93.

The water pump 52 is started, water enters from the water inlet pipe 51, the water outlet pipe 53 returns to the electrolytic cell 1, scum is gathered at one side of the water inlet pipe 51 under the influence of water flow, and then the scum collecting filter bucket 6 is hoisted by the hoister 73. When the dross collecting filter 6 reaches the top of the electrolytic cell 1, the motor 81 is started to drive the connecting rod 82, the connecting rod 82 rotates to drive the top block 83, and the top block 83 drives the dross collecting filter 6 to rotate, so that dross is poured out and enters the dross collecting cell 93.

Claims

1. The utility model provides a take high ammonia-nitrogen concentration wastewater treatment device of three-dimensional electrode, includes electrolytic bath (1), is located anodal electrode (2) and negative electrode (3) of electrolytic bath (1), anodal electrode (2) are chlorine evolution type DSA electrode, negative electrode (3) are titanium board or corrosion resistant plate or graphite plate, its characterized in that: anode electrode (2) are formed by connecting positive plate (22) by the anode plate (21) of polylith parallel arrangement, cathode electrode (3) are formed by connecting negative plate (32) by the negative plate (31) of polylith parallel arrangement, anode plate (21) inserts the setting of staggering each other in negative plate (31), with 1 between anode plate (21) and the negative plate (31): active carbon and insulating particles are filled in the volume ratio of 1 to form a bipolar third pole, the opening part between the anode plate (21) and the cathode plate (31) is sealed by an insulating separation net (10), an ultrasonic rod (4) is arranged in the electrolytic cell (1), and the ultrasonic rod (4) is positioned beside the anode electrode (2) and the cathode electrode (3).

2. The high-chlorine high-ammonia nitrogen wastewater treatment device with the three-dimensional electrode according to claim 1, characterized in that: the electrolytic cell (1) is further provided with a scum cleaning device and a scum gathering device, the scum gathering device comprises a water inlet pipe (51), a water pump (52) and a water outlet pipe (53) which are sequentially connected, one end, far away from the water pump (52), of the water inlet pipe (51) is inserted into the wastewater of the electrolytic cell (1), a filter screen is fixed at one end, far away from the water inlet pipe (51), of the water inlet pipe (51), and the water outlet pipe (53) is arranged at one end, far away from the water inlet pipe (51), of the electrolytic cell (1); dross collection device includes that dross collects filter funnel (6), fixes mounting panel (71) on electrolytic bath (1), fixes erection column (72) on mounting panel (71), fixes hoist engine (73) on erection column (72), the stay cord of hoist engine (73) is collected filter funnel (6) with the dross and is fixed, dross is collected filter funnel (6) and electrolytic bath (1) lateral wall butt, and dross is collected filter funnel (6) and is located inlet tube (51) one end, the dross is collected filter funnel (6) and is seted up the through-hole that supplies inlet tube (51) to pass.

3. The high-chlorine high-ammonia nitrogen wastewater treatment device with the three-dimensional electrode according to claim 2, characterized in that: a motor (81) is fixed on the mounting plate (71), a connecting rod (82) is fixed on an output shaft of the motor (81), and a top block (83) is fixed on the connecting rod (82).

4. The high-chlorine high-ammonia nitrogen wastewater treatment device with the three-dimensional electrode according to claim 1, characterized in that: the bottom of the electrolytic tank (1) is provided with an aeration device, and the aeration device comprises an aeration pipe (91) and an air compressor (92) connected with the aeration pipe (91).

5. The high-chlorine high-ammonia nitrogen wastewater treatment device with the three-dimensional electrode according to claim 4, characterized in that: a plurality of aeration pipes (91) are arranged in the electrolytic tank (1).

6. The high-chlorine high-ammonia nitrogen wastewater treatment device with the three-dimensional electrode according to claim 3, characterized in that: a scum collecting tank (93) is arranged on one side, located on the water inlet pipe (51), of the electrolytic cell (1).

7. The high-chlorine high-ammonia nitrogen wastewater treatment device with the three-dimensional electrode according to claim 6, characterized in that: the water inlet pipe (51) passes through the scum collecting tank (93).