Chemical wastewater treatment device of internal circulation micro-electrolysis anaerobic reactor

Abstract

The utility model discloses an internal circulation micro-electrolysis anaerobic reactor chemical wastewater treatment device which comprises an anaerobic reactor, a water inlet and a water outlet pipe are arranged on the anaerobic reactor, a water inlet pipe is arranged in the anaerobic reactor, and a plurality of water outlets are formed in the water inlet pipe; a filler frame is arranged on one side of the water inlet pipe and comprises a plurality of hollow channels; each channel is filled with a micro-electrolysis filler; and an aeration device and a backwashing device are respectively arranged below and above the filler frame. According to the utility model, the aeration device and the backwashing device are adopted to wash the surface of the micro-electrolysis filler, so that suspended particles are not easy to deposit on the surface of the micro-electrolysis filler, and the effective contact between the micro-electrolysis filler and wastewater is improved; the wastewater is subjected to electrolytic treatment by adopting the micro-electrolysis filler, so that the aim of degrading organic matters is fulfilled; an internal circulation pipe and a lifting pipe are adopted, so that the wastewater is in full contact with the filler in the first anaerobic zone and the filler in the second anaerobic zone in an internal circulation manner, and the organic matters in the wastewater are further removed.

Description

Technical Field

[0001] The utility model relates to the field of chemical wastewater treatment, in particular to an internal circulation micro-electrolysis anaerobic reactor chemical wastewater treatment device. Background Art

[0002] Iron-carbon micro-electrolysis technology is widely used in wastewater and wastewater treatment in the printing and dyeing industry, chemical industry, pharmaceutical industry, etc. When the wastewater to be treated passes through the micro-electrolysis filler, the active iron will form the anode, and the inert carbon will form the cathode, which will form countless micro-primary cells in the wastewater, and a series of electrochemical redox reactions will occur at the two poles of the micro-primary cells, thereby achieving the purpose of degrading pollutants in the wastewater.

[0003] In the prior art, after long-term use, most micro-electrolysis equipment will have suspended particles in the wastewater partially deposited on the surface of the micro-electrolysis filler and form a passivation film on the surface of the micro-electrolysis filler, causing blockage and blocking the effective contact between the micro-electrolysis filler and the wastewater, affecting the wastewater treatment effect and reducing the wastewater treatment efficiency. Utility Model Content

[0004] The utility model aims to provide an internal circulation micro-electrolysis anaerobic reactor chemical wastewater treatment device to solve the problem in the prior art that the surface of the micro-electrolysis filler is blocked, which affects the wastewater treatment effect and reduces the wastewater treatment efficiency.

[0005] In order to achieve the above utility model purpose, the technical solution of the utility model is:

[0006] An internal circulation micro-electrolysis anaerobic reactor chemical wastewater treatment device comprises an anaerobic reactor, a water inlet is arranged below the side wall of the anaerobic reactor, a water outlet is arranged above the side wall, a water inlet connected to the water inlet is arranged inside the anaerobic reactor, and a plurality of water outlets are evenly spaced on the side wall of the water inlet along its length direction; a packing rack is arranged on one side of the water outlet of the water inlet, and the packing rack comprises a plurality of hollow channels arranged in parallel and corresponding to the water outlets one by one, one end of each channel is closed and the other end is open, and the opening is connected to the corresponding water outlet, and adjacent channels are fixedly connected by a connecting plate; each channel is respectively filled with micro-electrolysis packing; an aeration device is arranged below the packing rack, and a backwashing device is arranged above the packing rack. The number of micro-electrolysis packings filled in the channel can be changed according to the wastewater treatment efficiency, speed, etc., and the adaptability is richer. The hollow channel has a large surface area and porosity, which is convenient for microbial biofilm in wastewater, reduces microbial loss, and improves the treatment efficiency of microbial membrane. The aeration device and backwash device aerate and backwash the packing rack and micro-electrolysis packing respectively, so that the suspended particles in the wastewater are not easily deposited on the surface of the micro-electrolysis packing and the packing rack, and the gaps of the micro-electrolysis packing are not easily blocked, and the micro-electrolysis reaction can proceed continuously and stably, so that the treatment device can continuously and efficiently treat the wastewater.

[0007] Preferably, the aeration device includes a blower located outside the anaerobic reactor, the blower is connected to an aeration main pipe, one end of the aeration main pipe away from the blower is located in the anaerobic reactor and arranged in parallel with the water inlet pipe, and the side wall of the aeration main pipe is provided with aeration branches corresponding to each channel, and each aeration branch is provided with a plurality of aerators facing the channel. The aeration device not only allows the wastewater to contact with the air and oxygenate by introducing air into the wastewater, quickly removes organic matter in the wastewater, and improves the treatment efficiency, but also stirs the wastewater, so that the suspended particles in the wastewater are not easy to be on the surface of the micro-electrolysis filler, and the gaps of the micro-electrolysis filler are not easy to be blocked, thereby improving the wastewater treatment efficiency.

[0008] Preferably, the backwashing device comprises a water pump and an outer tube arranged outside the anaerobic reactor, one end of the outer tube is connected to the outlet pipe, and the other end is connected to the water inlet of the water pump, the anaerobic reactor is provided with an inner tube located above the packing rack, the inner tube is provided with a plurality of nozzles facing the channel, and one end of the inner tube is connected to the water outlet of the water pump after passing through the anaerobic reactor. The backwashing device washes the packing rack from top to bottom, further removes suspended particles on the surface of the micro-electrolysis packing and the surface of the packing rack, and improves the efficiency of the packing rack and the micro-electrolysis packing in treating wastewater.

[0009] Preferably, a hollow cover plate is detachably connected to the opening of the channel. The detachably connected cover plate not only prevents the micro-electrolysis filler in the channel from entering the water inlet pipe, but also allows the micro-electrolysis filler in the channel to be added, subtracted or replaced according to the wastewater treatment efficiency.

[0010] Preferably, a clamping block is provided on the cover plate, and a clamping hole for clamping with the clamping block is provided at the opening of the channel.

[0011] Preferably, the anaerobic reactor is provided with a first grid plate, a second grid plate and a third grid plate from bottom to top, the first grid plate is located above the inner tube, a first anaerobic zone is formed between the first grid plate and the second grid plate, and a second anaerobic zone is formed between the second grid plate and the third grid plate; a packing layer is provided in the first anaerobic zone; a plurality of wavy springs are arranged obliquely in the first anaerobic zone, and one end of the spring is connected to the first grid plate, and the other end is connected to the second grid plate. After the wastewater flows upward into the first anaerobic zone, it impacts the springs, and the springs shake under the action of the impact force, so that the fillers in the packing layer are squeezed and rubbed against each other, thereby removing the suspended matter on the surface of the filler, and then facilitating the subsequent contact between the wastewater and the filler, and improving the wastewater treatment effect. The springs are arranged obliquely, which can increase the contact area between the springs and the packing layer, so that more fillers can be disturbed; the springs are arranged in a wavy shape, which can not only further increase the contact area with the filler, but also the wavy extrusion deformation is large, the friction between the fillers is large, and the suspended particles on the surface of the filler are easier to fall off.

[0012] Preferably, a composite filler is provided in the second anaerobic zone; an air pipe is fixedly connected below the third grid, and the air pipe is connected to a number of air bags located in the gaps of the composite filler. One end of the air pipe passes through the anaerobic reactor and is connected to the aeration main pipe. The air pipe is provided with a solenoid valve, which is located outside the anaerobic reactor and is electrically connected to a control cabinet outside the anaerobic reactor. The control cabinet controls the opening and closing of the solenoid valve, so that the air bag is inflated and deflated, and the composite filler is squeezed during the opening and closing movement, so that the aged biofilm on the composite filler automatically falls off, and the microorganisms on the composite filler are promoted to be renewed, thereby ensuring that the composite filler will not be blocked, and further improving the wastewater treatment effect and efficiency.

[0013] Preferably, a three-phase separator is provided inside the top of the anaerobic reactor, a gas-liquid separator is provided outside the top of the anaerobic reactor, a biogas pipe is provided on the gas-liquid separator, the outlet pipe is located above the three-phase separator, an inner circulation pipe and a lifting pipe are vertically provided inside the anaerobic reactor, one end of the inner circulation pipe is connected to the gas-liquid separator, and the other end is located below the first anaerobic zone, one end of the lifting pipe is connected to the gas-liquid separator, and the other end is connected to the three-phase separator. The lifting pipe is suitable for conveying the biogas separated in the three-phase separator and the muddy-water mixture carried by the biogas to the gas-liquid separator, and the gas-liquid separator discharges the biogas from the biogas pipe. The inner circulation pipe is used to return the muddy-water mixture in the gas-liquid separator to the bottom of the first anaerobic reaction zone for further treatment.

[0014] The beneficial effects of the utility model are:

[0015] 1. In the utility model, the aeration device and the backwashing device are respectively arranged on the upper and lower sides of the packing frame, and the gas and water flow collide with each other, which not only makes it difficult for the suspended particles in the wastewater to deposit on the surface of the micro-electrolysis packing and the packing frame, but also makes the gap of the micro-electrolysis packing difficult to be blocked, and the micro-electrolysis reaction can be carried out continuously and stably, but also makes the wastewater run around in the micro-electrolysis packing, and better contact with the micro-electrolysis packing, so that the treatment device can continuously and efficiently treat the wastewater.

[0016] 2. The utility model is provided with hollow channels and covers, which are convenient for microbial biofilm in wastewater, reduce microbial loss, and improve the treatment efficiency of microbial biofilm; and the micro-electrolysis filler can be increased, decreased or replaced according to the needs of wastewater treatment, and has wider applicability.

[0017] 3. In the utility model, a packing layer and springs are arranged in the first reaction zone, and the upward movement of water flow is used to impact the springs, so that the springs shake and squeeze the packing, and the packing rubs against each other, thereby removing suspended matter on the surface of the packing layer and improving the wastewater treatment effect.

[0018] 4. In the utility model, a combined filler and an air bag are arranged in the second reaction zone. The combined filler is squeezed during the opening and closing movement by inflating and deflating the air bag, so that the aged biofilm on the combined filler automatically falls off, promoting the renewal of microorganisms on the combined filler, thereby ensuring that the combined filler will not be blocked, and further improving the wastewater treatment effect and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 Schematic diagram of the connection relationship between the channel, aeration branch pipe and water inlet pipe.

[0021] Figure 3 It is a schematic diagram of the connection relationship between the channel, the cover plate, the card hole and the card slot.

[0022] In the figure:

[0023] 1. Anaerobic reactor; 11. Water inlet pipe; 12. Water outlet pipe; 2. Filling rack; 21. Channel; 211. Card hole; 22. Micro-electrolysis filler; 23. Cover plate; 231. Card block; 24. Fixed plate; 3. Aeration device; 31. Blower; 32. Aeration main pipe; 33. Aeration branch pipe; 34. Aerator; 4. Backwashing device; 41. Water pump; 42. Outer pipe; 43. Nozzle; 44. Inner pipe; 5. First anaerobic zone; 51. Filling layer; 52. Shrapnel; 53. First grid plate; 54. Second grid plate; 6. Second anaerobic zone; 61. Combined filler; 62. Air pipe; 63. Air bag; 64. Solenoid valve; 65. Third grid plate; 7. Three-phase separator; 8. Gas-liquid separator; 81. Biogas pipe; 9. Internal circulation pipe; 10. Lifting pipe. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present utility model will be described clearly and completely below in conjunction with the accompanying drawings.

[0025] The described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example 1

[0027] like Figure 1 As shown, an internal circulation micro-electrolysis anaerobic reactor chemical wastewater treatment device includes an anaerobic reactor 1, a water inlet is arranged below the side wall of the anaerobic reactor 1, a water outlet pipe 12 is arranged above the side wall, a gas-liquid separator 8 is arranged outside the top of the anaerobic reactor 1, and a biogas pipe 81 is arranged on the gas-liquid separator 8.

[0028] like Figure 1 As shown, the anaerobic reactor 1 is provided with a three-phase separator 7, a third grid plate 65, a second grid plate 54, a first grid plate 53, a backwashing device 4, a filler rack 2 and an aeration device 3 in sequence from top to bottom.

[0029] like Figure 1 As shown, a riser 10 and an inner circulation pipe 9 are vertically arranged in the anaerobic reactor 1. One end of the riser is connected to the gas-liquid separator 8, and the other end is connected to the three-phase separator 7; one end of the inner circulation pipe 9 is connected to the gas-liquid separator 8, and the other end is located below the first grid plate 53.

[0030] like Figure 1As shown, a second anaerobic zone 6 is formed between the third grid plate 65 and the second grid plate 54, and a composite filler 61 is arranged in the second anaerobic zone 6. An air pipe 62 is fixedly connected to the lower part of the third grid, and the air pipe 62 is connected to a plurality of air bags 63 located at the gaps between the composite fillers 61. One end of the air pipe 62 passes through the anaerobic reactor 1, and the air pipe 62 is provided with a solenoid valve 64 located outside the anaerobic reactor 1.

[0031] like Figure 1 As shown, a first anaerobic zone 5 is formed between the second mesh plate 54 and the first mesh plate 53, and a packing layer 51 is arranged in the first anaerobic zone 5; a plurality of spring pieces 52 are arranged obliquely in the first anaerobic zone 5, and one end of the spring piece 52 is connected to the first mesh plate 53, and the other end is connected to the second mesh plate 54. The inclination direction of each spring piece 52 may be the same or different; the spring piece 52 is a metal spring piece 52, preferably a wavy spring piece 52.

[0032] like Figure 1 As shown, the backwashing device 4 includes a water pump 41 and an outer pipe 42 arranged outside the anaerobic reactor 1. One end of the outer pipe 42 is connected to the outlet pipe 12, and the other end is connected to the water inlet of the water pump 41. An inner pipe 44 is arranged above the filling rack 2. One end of the inner pipe 44 passes through the anaerobic reactor 1 and is connected to the water outlet of the water pump 41. The inner pipe 44 is provided with a plurality of nozzles 43 facing the filling rack 2.

[0033] like Figure 1 , Figure 2 and Figure 3 As shown, an anaerobic reactor 1 is provided with a water inlet pipe 11 connected with a water inlet, and a plurality of water outlets are evenly spaced on the side wall of the water inlet pipe 11 along its length direction. A filler rack 2 is provided on one side of the water outlet of the water inlet pipe 11, and the filler rack 2 includes a plurality of hollow channels 21 arranged in parallel and corresponding to the water outlets one by one; one end of each channel 21 is closed and the other end is open, and a hollow cover plate 23 is detachably connected to the opening of the channel 21, and a clamping block 231 is provided on the cover plate 23, and a clamping hole 211 clamped with the clamping block 231 is provided at the opening of the channel 21, and each channel 21 is respectively filled with a micro-electrolysis filler 22, and the opening of each channel 21 is connected with the corresponding water outlet.

[0034] like Figure 1 and Figure 2 As shown, the aeration device 3 includes a blower 31, an aeration main pipe 32 and a plurality of aeration branch pipes 33. The blower 31 is located outside the anaerobic reactor 1. The aeration main pipe 32 is arranged in parallel with the water inlet pipe 11, and one end is connected to the blower 31, and the other end penetrates into the anaerobic reactor 1. Each aeration branch pipe 33 is connected to the aeration main pipe 32 and is evenly spaced along the length direction of the aeration main pipe 32. Each aeration branch pipe 33 is provided with a plurality of aerators 34 facing the channel 21.

[0035] It also includes a control cabinet, and the solenoid valve 64, the blower 31, the water pump 41, the three-phase separator 7, and the gas-liquid separator 8 are electrically connected to the control cabinet respectively.

[0036] The aeration device 3 and the backwashing device 4 can work separately or simultaneously according to the needs.

[0037] In summary,

[0038] When the chemical wastewater treatment device is in use, the wastewater enters the water inlet pipe 11 from the water inlet, and then enters each channel 21. The sewage contacts the micro-electrolysis filler 22 in the channel 21 to degrade the pollutants in the wastewater; the degraded wastewater enters the first reaction zone and the second reaction zone in turn for treatment and then enters the three-phase separator 7. The biogas separated in the three-phase separator 7 and the mud-water mixture carried by the biogas are transported to the gas-liquid separator 8 through the lifting pipe 10. The treated and purified water is discharged from the water outlet pipe 12, and the biogas of the gas-liquid separator 8 is discharged from the biogas pipe 81. The mud-water mixture in the gas-liquid separator 8 is refluxed to the bottom of the first anaerobic zone 5 through the internal circulation pipe 9 for further treatment.

[0039] In the chemical wastewater treatment device, the blower 31 works to replenish air to each aeration branch pipe 33 through the aeration main pipe 32, and then discharges it from each aerator 34 to aerate the bottom of the packing rack 2; the water discharged from the outlet pipe 12 circulates to the inner pipe 44 through the water pump 41 and the outer pipe 42, and then sprays out from each nozzle 43 to backwash the top of the packing rack 2; the aerator 34 and the nozzle 43 work at the same time, so that the suspended particles are not easily deposited on the surface of the micro-electrolysis packing 22, and the gap of the micro-electrolysis packing 22 is not easily blocked, thereby improving the effective contact between the micro-electrolysis packing 22 and the wastewater, and improving the wastewater treatment efficiency.

[0040] The described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. An internal circulation micro-electrolysis anaerobic reactor chemical wastewater treatment device, comprising an anaerobic reactor, wherein a water inlet is arranged below the side wall of the anaerobic reactor, and a water outlet pipe is arranged above the side wall, characterized in that: The anaerobic reactor is provided with a water inlet pipe connected to the water inlet, and a plurality of water outlets are evenly spaced along the length of the water inlet pipe on the side wall; A filling frame is provided on one side of the water outlet of the water inlet pipe, and the filling frame includes a plurality of hollow channels arranged in parallel and corresponding to the water outlets one by one, one end of each channel is closed and the other end is open, and the opening is communicated with the corresponding water outlet, and adjacent channels are fixedly connected by a connecting plate; Each channel is filled with micro-electrolytic filler; An aeration device is arranged below the packing frame, and a backwashing device is arranged above the packing frame.

2. The internal circulation micro-electrolysis anaerobic reactor chemical wastewater treatment device according to claim 1 is characterized in that: The aeration device includes a blower located outside the anaerobic reactor, the blower is connected to an aeration main pipe, one end of the aeration main pipe away from the blower is located in the anaerobic reactor and arranged in parallel with the water inlet pipe, aeration branch pipes corresponding to each channel are arranged on the side wall of the aeration main pipe, and each aeration branch pipe is provided with a plurality of aerators facing the channel.

3. The internal circulation micro-electrolysis anaerobic reactor chemical wastewater treatment device according to claim 2 is characterized in that: The backwashing device includes a water pump and an outer pipe arranged outside the anaerobic reactor, one end of the outer pipe is connected to the water outlet pipe, and the other end is connected to the water inlet of the water pump. The anaerobic reactor is provided with an inner pipe located above the packing rack, and the inner pipe is provided with a plurality of nozzles facing the channel. One end of the inner pipe passes through the anaerobic reactor and is connected to the water outlet of the water pump.

4. The internal circulation micro-electrolysis anaerobic reactor chemical wastewater treatment device according to claim 1 is characterized in that: The opening of the channel is detachably connected with a hollow cover plate.

5. The internal circulation micro-electrolysis anaerobic reactor chemical wastewater treatment device according to claim 4 is characterized in that: A clamping block is arranged on the cover plate, and a clamping hole for clamping with the clamping block is arranged at the opening of the channel.

6. The internal circulation micro-electrolysis anaerobic reactor chemical wastewater treatment device according to claim 3 is characterized in that: The anaerobic reactor is provided with a first grid plate, a second grid plate and a third grid plate from bottom to top, wherein the first grid plate is located above the inner tube, a first anaerobic zone is formed between the first grid plate and the second grid plate, and a second anaerobic zone is formed between the second grid plate and the third grid plate; A packing layer is provided in the first anaerobic zone; A plurality of wavy spring sheets are obliquely arranged in the first anaerobic zone, and one end of the spring sheet is connected to the first grid plate, and the other end is connected to the second grid plate.

7. The internal circulation micro-electrolysis anaerobic reactor chemical wastewater treatment device according to claim 6 is characterized in that: A composite filler is provided in the second anaerobic zone; An air pipe is fixedly connected below the third grid, and the air pipe is connected to a plurality of air bags located at the gaps of the combined filler. One end of the air pipe passes through the anaerobic reactor and is connected to the aeration main pipe. A solenoid valve is provided on the air pipe, and the solenoid valve is located outside the anaerobic reactor, and is electrically connected to a control cabinet outside the anaerobic reactor.

8. The internal circulation micro-electrolysis anaerobic reactor chemical wastewater treatment device according to claim 1 is characterized in that: A three-phase separator is arranged inside the top of the anaerobic reactor, a gas-liquid separator is arranged outside the top of the anaerobic reactor, a biogas pipe is arranged on the gas-liquid separator, the outlet pipe is located above the three-phase separator, an inner circulation pipe and a riser are vertically arranged in the anaerobic reactor, one end of the inner circulation pipe is connected to the gas-liquid separator, and the other end is located below the first anaerobic zone, one end of the riser is connected to the gas-liquid separator, and the other end is connected to the three-phase separator.

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