CN110902808A - Up-flow type electrocatalysis hydrolysis acidification reactor - Google Patents
Up-flow type electrocatalysis hydrolysis acidification reactor Download PDFInfo
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- CN110902808A CN110902808A CN201911154739.7A CN201911154739A CN110902808A CN 110902808 A CN110902808 A CN 110902808A CN 201911154739 A CN201911154739 A CN 201911154739A CN 110902808 A CN110902808 A CN 110902808A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/005—Combined electrochemical biological processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Abstract
An up-flow type electrocatalysis hydrolysis acidification reactor, which belongs to the field of sewage treatment equipment. Comprises a reactor main body; a loop reaction zone, a cross filler zone, a clear water zone, an electro-catalytic reaction device and a water outlet tank are respectively arranged in the reactor main body from bottom to top; the main water distribution pipe extends into the reactor from the bottom of the reactor main body and is connected with a water distributor above the water outlet tank, the water distributor is connected with one end of a water distribution branch pipe, and the other end of the water distribution branch pipe extends to the lower part of the circulation reaction zone and is connected with a water distribution head at the bottom of the circulation reaction zone. The invention can increase the degradation rate of organic matters in the wastewater, improve the removal rate of COD and the biochemical degradation rate, and save the occupied area and the operating cost.
Description
Technical Field
The invention relates to the field of sewage treatment equipment, in particular to an upflow electrocatalytic hydrolysis acidification reactor.
Background
In recent years, with the development of the world and the progress of human beings, the technologies of pharmacy, chemical industry, pesticides, printing and the like are more mature, but the pollution of the generated wastewater is more serious, and hydrolytic acidification treatment is used as a sewage pretreatment process and is mainly used for removing suspended matters in influent sewage and improving the biodegradability of the sewage so as to reduce the load of a subsequent biochemical treatment process.
The hydrolysis acidification treatment process is mainly characterized in that the sludge and the sewage are quickly and uniformly mixed, so that the granular substances and the colloidal substances in the inlet water are quickly intercepted and adsorbed, and because the sludge contains high-concentration facultative microorganisms, the intercepted organic substances hydrolyze insoluble organic substances into soluble substances under the action of a large amount of hydrolysis acid-producing bacteria under the anoxic condition in the tank, and the macromolecular and difficultly biodegradable substances are converted into easily biodegradable substances.
The invention discloses a hydrolysis acidification reaction tank/device and a hydrolysis acidification process in Chinese invention patent with the patent number of CN201710010903.1, wherein the hydrolysis acidification reaction tank/device is an integrated structure formed by connecting three cells in series, the three cells are a first cell, a second cell and a third cell in sequence according to the series connection order, a partition wall is shared between the adjacent cells, the bottom of each partition wall is provided with a flow guide hole to communicate the adjacent cells, a liquid flow stirrer is arranged in each cell, a water inlet well is arranged at the upper part of each cell, a water inlet pipe is arranged above the hydrolysis acidification reaction tank/device, three water inlet valves/gates are arranged on the water inlet pipe and are respectively used for injecting water into the corresponding cells, a water distribution/outlet channel, a water outlet weir, a water outlet well and a water outlet pipe are arranged at the upper parts of the first cell and the third cell, a mud collecting well and a mud discharge pipe with a mud discharge valve are arranged at the lower parts of the first cell, the water distribution/outlet channel is communicated with the corresponding water inlet well and the corresponding water outlet well, and the water outlet weir is arranged at one side of the water distribution/outlet channel; the process of the invention combines a hydrolytic acidification reaction tank/device, changes the water inlet point alternately, can correspondingly improve the sludge load of each section of the system, is beneficial to sludge retention, and further improves the settleability of the sludge, but has the following defects:
① the reaction device has more traditional treatment mode and is too complex to operate;
② the reactor has three cells, and a mud collecting well needs to be built, which occupies too large area and needs too much cost;
the invention discloses a hydrolysis acidification reactor in Chinese patent No. CN201721718067.4, the device comprises a reaction tank and a tank cover, the tank cover is embedded and arranged on the top of the reaction tank, the top of the tank cover is respectively provided with a water inlet pipe and an exhaust pipe, one side of the reaction tank is provided with a water outlet pipe, the diameter of the water inlet pipe is slightly larger than that of the exhaust pipe, the diameters of the water outlet pipe and the water inlet pipe are the same, the water inlet pipe penetrates through the tank cover, the water outlet pipe is communicated with the reaction tank, a deposition chamber and a hydrolysis acidification tank are respectively formed in the reaction tank, the side wall of the deposition chamber is provided with a partition plate, a through hole is arranged at the joint between the deposition chamber and the hydrolysis acidification tank and penetrates through the partition plate, the hydrolysis acidification reactor has the capability of utilizing microorganisms to carry out acidification treatment, the sewage filtering treatment effect is good, chemical gases can:
① the reaction device is simple, the treatment mode is single, and the high removal rate of the organic wastewater is difficult to ensure;
② a deposition chamber is needed to be built in the reactor, which is expensive and has overlarge floor area;
in response to the above problems, a new hydrolysis acidification reactor is needed.
Disclosure of Invention
The invention provides an up-flow type electro-catalytic hydrolysis acidification reactor, which aims to solve the problems of low efficiency, high cost and large occupied area of the conventional hydrolysis acidification reactor.
In order to achieve the purpose, the invention adopts the technical scheme that: an upflow electrocatalytic hydrolysis acidification reactor comprises a reactor main body; a loop reaction zone, a cross filler zone, a clear water zone, an electro-catalytic reaction device and a water outlet tank are respectively arranged in the reactor main body from bottom to top; the main water distribution pipe extends into the reactor from the bottom of the reactor main body and is connected with a water distributor above the water outlet tank, the water distributor is connected with one end of a water distribution branch pipe, and the other end of the water distribution branch pipe extends to the lower part of the circulation reaction zone and is connected with a water distribution head at the bottom of the circulation reaction zone; the middle part of the circulation reaction zone is provided with a circulation chamber, the top of the circulation chamber is provided with a circulation water spray nozzle, and a water distribution main pipe in the circulation chamber is provided with a water outlet pipe; the cross filler area comprises two filler fixing nets, and fillers are placed between the two filler fixing nets; the electro-catalytic reaction device comprises a cathode, an anode and a reference electrode clamped between the cathode and the anode, wherein the cathode and the anode are connected through an external circuit; one side of the water outlet groove is provided with a water outlet.
Furthermore, the bottom of the reactor main body is provided with support legs, the support legs are placed on the bearing plate, a base plate is arranged between the support legs and the bearing plate, and the base plate is provided with a fixing hole.
Further, the circulation room lateral wall is equipped with fixed knob, and fixed bolster one end passes through the fixed screw and links to each other with the lateral wall of reactor main part, and the fixed bolster other end links to each other with fixed knob, and the circulation water jet distributes for three rows, and every row in both sides is equipped with 7 circulation water jets, and middle one row is equipped with 6 circulation water jets.
Furthermore, the filler fixing net is connected with the side wall of the reactor main body through a fixing bolt, a plurality of layers of fillers are stacked on the filler fixing net positioned below, a fixing steel plate is arranged on the edge of the filler fixing net positioned above, and the fillers comprise a bottom plate made of epoxy glass fiber reinforced plastics and grid-shaped bulges.
Further, the cathode and the anode have the same structure, the anode comprises two electrode fixing nets, graphite particles and a carbon brush, the electrode fixing nets are connected with the side wall of the reactor main body through fixing bolts, the graphite particles and the carbon brush are filled between the two electrode fixing nets, and two carbon rods respectively penetrating through the cathode and the anode are connected through an external circuit; proton exchange membranes are arranged on the top surface of the anode and the bottom surface of the cathode.
Further, the external circuit comprises a computer, a data recorder and an external power supply, one end of the external power supply is connected with the carbon rod of the cathode through a circuit, the other end of the external power supply is connected with the carbon rod of the anode through a circuit, the external power supply is further connected with the computer, and the data recorder is further connected with the reference electrode, the cathode and the anode.
Further, the main water distribution pipe is connected with a water inlet tank through a lift pump; a sludge discharge pipe is arranged at the bottom of the circulation reaction zone, one end of the sludge discharge pipe extends out of the reactor main body and is connected with a sludge pump, and one end of the sludge discharge pipe positioned outside the reactor main body is provided with a sludge taking port; the water outlet is connected with the water outlet pool.
Furthermore, a pH/ORP sensor and a temperature sensor are arranged on the side wall of the reactor body of the clean water area, the pH/ORP sensor and the temperature sensor are connected with a PLC control cabinet, the PLC control cabinet is also connected with a valve of a water outlet, a sludge pump, a water distributor, a lift pump, a liquid level sensor A and a liquid level sensor B, the liquid level sensor A is communicated with a pipeline between the lift pump and a water distribution main pipe, the liquid level sensor B is communicated with the water outlet, and a flow meter is arranged between a pipeline for connecting the lift pump and the PLC control cabinet and a pipeline for connecting the lift pump and the water distribution main pipe.
Furthermore, a plurality of water taking ports are formed in the side wall of the reactor main body and are respectively communicated with the circulation reaction area, the clean water area, the cathode and the anode.
Furthermore, the water distribution heads on the bottom surface of the circulation reaction zone are distributed on three virtual circles, the three virtual circles are concentric with the center of the bottom surface of the circulation reaction zone, the three virtual circles are respectively a first circle, a second circle and a third circle with gradually increased diameters, the distance between the first circle and the second circle is the same as the distance between the second circle and the third circle, 4 water distribution heads with an included angle of 90 degrees are arranged on the first circle, 4 water distribution heads with an included angle of 90 degrees are arranged on the second circle, and 12 water distribution heads with an included angle of 30 degrees are arranged on the third circle.
The invention has the beneficial effects that: the water distribution system can well realize the full and uniform mixing of the sludge and the wastewater, and the treatment efficiency is high; the cross filler zone 14 can effectively reduce the content of organic matters in the effluent, and the electro-catalytic reaction device can recycle and reuse water resources by removing and converting pollutants in the water, so that the invention can increase the degradation rate of the organic matters in the wastewater, improve the removal rate of COD (chemical oxygen demand) and the biochemical degradation rate, and save the occupied area and the operating cost.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a reactor body according to the present invention;
FIG. 3 is a schematic view of a partial structure of the bottom of the reactor main body according to the present invention;
FIG. 4 is a schematic view of a partial structure of the bottom surface of the reactor main body according to the present invention;
FIG. 5 is a schematic view showing the connection between a water distribution head and a water distribution branch pipe according to the present invention;
FIG. 6 is a schematic partial cross-sectional view of a loop reaction zone according to the present invention;
FIG. 7 is a top plan view of a loop reaction zone according to the present invention;
FIG. 8 is a cross-sectional view of the cross-packing region of the present invention;
FIG. 9 is a top view of one of the layers of the cross-fill zone of the present invention;
FIG. 10 is a schematic structural view of the packing of the present invention;
FIG. 11 is a schematic view of an electrocatalytic reaction apparatus according to the present invention;
FIG. 12 is a circuit diagram of an electrocatalytic reaction device of the present invention.
In the figure, 1, a water distribution head, 2, a main water distribution pipe, 3, a water distributor, 4, a branch water distribution pipe, 5, a water outlet pipe, 6, a fixing knob, 7, a fixing screw, 8, a fixing bracket, 9, a circulating chamber, 10, a sludge discharge pipe, 11, a sludge pump, 12, a water intake port, 13, a fixing bolt, 14, a cross filler area, 15, a filler fixing net, 16, a fixing steel plate, 17, a pH/ORP sensor, 18, a temperature sensor, 19, a reference electrode, 20, an anode, 21, a carbon brush, 22, a cathode, 23, an external power supply, 24, a data recorder, 25, a water outlet, 26, a water outlet tank, 27, a liquid level sensor A, 28, a liquid level sensor B, 29, a flowmeter, 30, a computer, 31, a water inlet tank, 32, a lifting pump, 33, a reactor main body, 34, a PLC control cabinet, 35, a water outlet tank, 36, a water spray port, 37, a sludge intake port, 38, a bearing plate, 40. backing plate, 41 fixing hole, 42 filler, 43 resistor.
Detailed Description
An up-flow electro-catalytic hydrolysis acidification reactor for treating high-concentration refractory (BOD5/COD <0.2) wastewater of pharmacy, pesticide, printing and dyeing, chemical industry and the like comprises a reactor main body 33; the interior of the reactor main body 33 is respectively provided with a circulation reaction zone, a cross filler zone 14, a clear water zone, an electrocatalytic reaction device and a water outlet tank 26 from bottom to top; the main water distribution pipe 2 extends into the reactor from the bottom of the reactor main body 33 and is connected with the water distributor 3 above the water outlet tank 26, the water distributor 3 is connected with one end of the branch water distribution pipe 4, and the other end of the branch water distribution pipe 4 extends to the lower part of the circulation reaction zone and is connected with the water distribution head 1 at the bottom of the circulation reaction zone; the middle part of the circulation reaction zone is provided with a circulation chamber 9, the top of the circulation chamber 9 is provided with a circulation water spray nozzle 36, and the main water distribution pipe 2 positioned in the circulation chamber 9 is provided with a water outlet pipe 5; the cross filler area 14 comprises two filler fixing nets 15, and the filler 42 is arranged between the two filler fixing nets 15; the electrocatalytic reaction device comprises a cathode 22, an anode 20 and a reference electrode 19 sandwiched between the cathode 22 and the anode 20, wherein the cathode 22 and the anode 20 are connected through an external circuit, and the reference electrode 19 uses a Saturated Calomel Electrode (SCE) (+247mV vs. standard hydrogen electrode); a water outlet 25 is arranged on one side of the water outlet groove 26; the main water distribution pipe 2 made of polyethylene plastic, the stainless steel water distributor 3, the branch water distribution pipes 4 made of polyethylene plastic and the stainless steel water distribution head 1 form a water distribution system, the water distribution system can well realize the full and uniform mixing of sludge and wastewater, the treatment efficiency is high, the decontamination effect is better, the sludge discharge is smooth, the operation cost is low, the operation is simple, the flow velocity of the vertical section of the branch water distribution pipe 4 is 0.2-0.4m/s, and the pipe diameter of the upper part of the vertical section is larger than that of the lower part.
The reactor main body 33 is provided at the bottom with a leg 39, the leg 39 is placed on a bearing plate 38, a pad 40 is provided between the leg 39 and the bearing plate 38, and the pad 40 is provided with a fixing hole 41.
The lateral wall of the circulation chamber 9 made of stainless steel is provided with a fixed knob 6 for adjustment, one end of a fixed support 8 is connected with the lateral wall of the reactor main body 33 through a fixed screw 7, the other end of the fixed support 8 is connected with the fixed knob 6, the circulating water spray nozzles 36 are distributed in three rows, 7 circulating water spray nozzles 36 are arranged on each row on two sides, and 6 circulating water spray nozzles 36 are arranged on one row in the middle.
The filler fixed net 15 is connected with the side wall of the reactor main body 33 through the fixing bolt 13, the fillers 42 are stacked on the filler fixed net 15 below the filler fixed net 42 in multiple layers, two adjacent layers have a certain rotation angle, the edge of the filler fixed net 15 above the filler fixed net is provided with the fixed steel plate 16, the fillers 42 comprise a bottom plate made of epoxy glass fiber reinforced plastics and latticed bulges, the grid distance is 10mm, the size of the fillers 42 is LxBxH (x B H400 x 500 mm), the resistance of water flow is increased, the effect of strengthening mud-water separation is realized, most of the sludge is kept below the cross filler area 14, the functions of strengthening rectification and preventing sludge loss are realized, the water quality of the discharged water is strengthened, the void ratio is 95%, and the specific surface area is 360m2/m3The distance between the cross filler zone 14 and the bottom surface of the reactor main body 33 is 0.8m, the total amount is 30% of the volume of the reactor main body 33, the volume load is 3-6kg/(m3 d), the hydraulic retention time is 3-6h, the sludge yield coefficient is 0.1-0.2kg/kgCOD, and the cross filler zone 14 has double effects of suspended biological oxidation and fixed biological oxidation due to the multi-layer superposition of the fillers 42 and the cross arrangement mode with a certain rotation angle, so that the sludge loss is prevented, and the quick start of each reaction zone is ensured; meanwhile, the cross packing area 14 can flocculate a large number of microorganisms to form a good anaerobic biomembrane, and the mass transfer process is strengthened through turbulent flow contact between the wastewater and the biomembrane, so that the content of organic matters in the effluent is further reduced.
The cathode 22 and the anode 20 have the same structure, the anode 20 comprises two electrode fixing nets, graphite particles and a carbon brush 21, the density of the graphite particles is 4-7(g/cm3), the fixed carbon content is not less than 96%, the scale size is 1-3mm, the crystal grain size is 1.2mm, and the graphite particles need to be pretreated: cleaning by soaking and soaking with hydrochloric acid for 24 hours, and performing acid treatment by soaking in a solution; the electrode fixing nets are connected with the side wall of the reactor main body 33 through fixing bolts 13, graphite particles and carbon brushes 21 are filled between the two electrode fixing nets, two carbon rods respectively penetrating through the cathode 22 and the anode 20 are connected through an external circuit, and the carbon rods are used as current collectors; proton exchange membranes are arranged on the top surface of the anode 20 and the bottom surface of the cathode 22; the principle of the electro-catalytic reaction device is a biological electrochemical system, waste resources can be converted into energy, water resources are recycled by removing and converting pollutants in water, graphite electrodes (a cathode 22 and an anode 20) are adopted to reduce ohmic loss of resistance, a current collector auxiliary electrode or a bipolar plate stack design is adopted, the electrodes are horizontally arranged to prevent short flow of water, organic matters are used as fuel to be oxidized by microorganisms in an anaerobic anode 20 after sewage enters the electro-catalytic reaction device, generated electrons are captured by the microorganisms and transferred to an anode of an external power supply (battery) 23, then the electrons reach the cathode 22 through an external circuit to form a loop to generate current, protons reach the cathode 22 through a proton exchange membrane to react with an electron acceptor (oxygen) to generate water, and the obtained value is controlled and recorded by a data recorder 24 and a computer 30, and can take out the water samples in the cathode 22 and the anode 20 from the corresponding water intake ports 12; the microbial community in the cathode 22, anode 20 biofilm and in the liquid phase bulk consists mainly of: bacteria related to reduction of refractory pollutants, bacteria related to oxidation of intermediate products, bacteria related to hydrolytic fermentation, homoacetogenic bacteria and potential electrochemical active bacteria decompose macromolecular refractory organics into micromolecular organics (such as volatile acid).
The external circuit comprises a computer 30, a data recorder 24 and an external power supply 23, wherein the data recorder 24 adopts an LH-3BA type ultraviolet-visible intelligent type parameter water quality tester manufactured by Beijing Lianhua Yongxing science and technology development Limited company, a resistor 43 is arranged in the external power supply 23, the resistor 43 is 10 omega, a direct current stabilized power supply is used for applying 0.5V voltage, one end of the external power supply 23 is connected with a carbon rod of a cathode 22 through a circuit, the other end of the external power supply 23 is connected with a carbon rod of an anode 20 through a circuit, the external power supply 23 is also connected with the computer 30, and the data recorder 24 is also connected with a reference electrode 19, the cathode 22 and the anode 20.
The water distribution main pipe 2 is connected with the water inlet tank 31 through a QW type lifting pump 32, and the lifting pump 32 pumps the sewage obtained in the water inlet tank 31 into the water distribution system in a pulse mode; a sludge discharge pipe 10 is arranged at the bottom of the circulation reaction zone, one end of the sludge discharge pipe 10 extends out of the reactor main body 33 to be connected with a sludge pump 11, and one end of the sludge discharge pipe 10 positioned outside the reactor main body 33 is provided with a sludge taking port 37 for obtaining sludge for measurement; the water outlet 25 is connected with a water outlet pool 35.
A pH/ORP sensor 17 and a temperature sensor 18 are arranged on the side wall of a reactor main body 33 of the clear water area, the pH/ORP sensor 17 and the temperature sensor 18 are connected with a PLC control cabinet 34, the PLC control cabinet 34 is also connected with a valve of a water outlet 25, a sludge pump 11, a water distributor 3, a lift pump 32, a liquid level sensor A27 and a liquid level sensor B28, the liquid level sensor A27 is communicated with a pipeline between the lift pump 32 and a water distribution main pipe 2 to obtain water inlet liquid level data, the liquid level sensor A27 is fixed on the outer wall of the lower end of the reactor main body 33, the liquid level sensor B28 is communicated with the water outlet 25 to obtain water outlet liquid level data, the liquid level sensor B28 is fixed on the outer wall of the upper end of the reactor main body 33, a flow meter 29 is arranged between a pipeline for connecting the lift pump 32 and the PLC control cabinet 34 and a pipeline for connecting the lift pump, The concentrations of BOD5, ammonia nitrogen, TP, TN and the like can control the flow, temperature and the like, and meanwhile, the discharge amount of the residual sludge can be controlled according to MLVSS/MLSS.
The side wall of the reactor main body 33 is provided with a plurality of water intake ports 12, the plurality of water intake ports 12 are respectively communicated with the circulation reaction area, the clean water area, the cathode 22 and the anode 20, and the water intake ports 12 are used for sampling test.
The water distribution heads 1 at the bottom of the circulation reaction zone are distributed on three virtual circles which are concentric with the center of the bottom of the circulation reaction zone, the three virtual circles are respectively a first circle, a second circle and a third circle with increasing diameters, the distance between the first circle and the second circle is the same as that between the second circle and the third circle, the first circle is provided with 4 water distribution heads 1 with an included angle of 90 degrees, the second circle is provided with 4 water distribution heads 1 with an included angle of 90 degrees, the water distribution heads 1 on the second circle and the water distribution heads 1 on the first circle form an included angle of 45 degrees, the third circle is provided with 12 water distribution heads 1 with an included angle of 30 degrees, and the water distribution heads 1 are all arranged upwards, the water distribution mode ensures that the main contact mode of microorganisms and substrates in the circulation reaction zone is flow contact, the sludge in the circulation reaction zone is fully expanded, the contact reaction area is increased, the degradation of the substrates is accelerated, and the reaction time is relatively shortened, can bear larger organic load.
The lift pump 32 of this embodiment pumps the wastewater in the water inlet tank 31 into the main water distribution pipe 2, and the mode of wastewater entering can be adjusted by adjusting the lift pump 32, for example, pulse type, the wastewater is pumped into the water distributor 3 and then respectively guided into the branch water distribution pipes 4 to be pumped out from the water distribution head 1, the sewage is pumped into the circulation chamber 9 by the water outlet pipe 5, and then guided into the circulation reaction zone from the water spray ports 36, the water distribution mode is uniform, the hydraulic retention time is reduced, the sludge retention time is prolonged, the separation of the hydraulic retention time and the sludge retention time is realized, the sewage is filtered by the filler 42 when passing through the cross filler zone 14, the sludge sinks and is discharged from the sludge discharge pipe 10, the clear water zone is provided with the pH/ORP sensor 17 and the temperature sensor 18 for measuring parameters, the sewage after once filtering is in the clear water zone, and the sewage reaches the water outlet tank 26 after reacting in the electrocatalysis, and is discharged from the water outlet 25 to the water outlet pool 35.
The operation parameters of the embodiment are as follows: HRT is 12-24h, pH is 3.5-7.5, temperature is 15-30 ℃, COD removal rate is more than 50%, and wastewater BOD can be removed5The COD is increased to more than 0.35; can increase the degradation rate of organic matters in the wastewater, improve the removal rate of COD and the biochemical degradation rate, and save the occupied area and the operating cost.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (10)
1. An upflow electrocatalytic hydrolytic acidification reactor, comprising a reactor body (33); a loop reaction zone, a cross filler zone (14), a clear water zone, an electro-catalytic reaction device and a water outlet tank (26) are respectively arranged in the reactor main body (33) from bottom to top; the main water distribution pipe (2) extends into the reactor from the bottom of the reactor main body (33) and is connected with the water distributor (3) above the water outlet tank (26), the water distributor (3) is connected with one end of the branch water distribution pipe (4), and the other end of the branch water distribution pipe (4) extends to the lower part of the circulation reaction zone and is connected with the water distribution head (1) at the bottom of the circulation reaction zone; a circulation chamber (9) is arranged in the middle of the circulation reaction zone, a circulation water spray nozzle (36) is arranged at the top of the circulation chamber (9), and a water outlet pipe (5) is arranged on a main water distribution pipe (2) positioned in the circulation chamber (9); the cross filler area (14) comprises two filler fixing nets (15), and a filler (42) is arranged between the two filler fixing nets (15); the electrocatalytic reaction device comprises a cathode (22), an anode (20) and a reference electrode (19) clamped between the cathode (22) and the anode (20), wherein the cathode (22) and the anode (20) are connected through an external circuit; a water outlet (25) is arranged on one side of the water outlet groove (26).
2. An upflow electrocatalytic hydrolytic acidification reactor as in claim 1, wherein the reactor body (33) is provided at the bottom with legs (39), the legs (39) are placed on the bearing plate (38), a pad (40) is provided between the legs (39) and the bearing plate (38), and the pad (40) is provided with fixing holes (41).
3. The upflow electrocatalytic hydrolysis acidification reactor as claimed in claim 1, wherein the side wall of the circulation chamber (9) is provided with a fixing knob (6), one end of the fixing support (8) is connected with the side wall of the reactor main body (33) through a fixing screw (7), the other end of the fixing support (8) is connected with the fixing knob (6), the circulating water injection ports (36) are distributed in three rows, each row on two sides is provided with 7 circulating water injection ports (36), and the middle row is provided with 6 circulating water injection ports (36).
4. The upflow electrocatalytic hydrolysis/acidification reactor as claimed in claim 1, wherein the packing fixing net (15) is connected to the side wall of the reactor body (33) by fixing bolts (13), the packing (42) is stacked on the packing fixing net (15) located below in multiple layers, the edge of the packing fixing net (15) located above is provided with a fixing steel plate (16), and the packing (42) comprises a bottom plate made of epoxy glass fiber reinforced plastic and grid-shaped protrusions.
5. The upflow electrocatalytic hydrolysis acidification reactor as claimed in claim 1, wherein the cathode (22) and the anode (20) are identical in structure, the anode (20) comprises two electrode fixing nets, graphite particles and carbon brushes (21), the electrode fixing nets are connected with the side wall of the reactor main body (33) through fixing bolts (13), the graphite particles and the carbon brushes (21) are filled between the two electrode fixing nets, and two carbon rods respectively penetrating through the cathode (22) and the anode (20) are connected through an external circuit; the top surface of the anode (20) and the bottom surface of the cathode (22) are both provided with proton exchange membranes.
6. An upflow electrocatalytic hydrolysis/acidification reactor as in claim 1, wherein the external circuit comprises a computer (30), a data recorder (24) and an external power supply (23), one end of the external power supply (23) is connected to the carbon rod of the cathode (22) through a circuit, the other end of the external power supply (23) is connected to the carbon rod of the anode (20) through a circuit, the external power supply (23) is further connected to the computer (30), and the data recorder (24) is further connected to the reference electrode (19), the cathode (22) and the anode (20).
7. The upflow electrocatalytic hydrolysis acidification reactor as claimed in claim 1, wherein the main water distribution pipe (2) is connected to the water inlet tank (31) through a lift pump (32); a sludge discharge pipe (10) is arranged at the bottom of the circulation reaction zone, one end of the sludge discharge pipe (10) extends out of the reactor main body (33) to be connected with a sludge pump (11), and one end of the sludge discharge pipe (10) positioned outside the reactor main body (33) is provided with a sludge taking port (37); the water outlet (25) is connected with a water outlet pool (35).
8. An upflow electrocatalytic hydrolytic acidification reactor as in claim 7, the side wall of a reactor main body (33) of the clean water area is provided with a pH/ORP sensor (17) and a temperature sensor (18), the pH/ORP sensor (17) and the temperature sensor (18) are connected with a PLC control cabinet (34), the PLC control cabinet (34) is also connected with a valve of a water outlet (25), a sludge pump (11), a water distributor (3), a lift pump (32), a liquid level sensor A (27) and a liquid level sensor B (28), the liquid level sensor A (27) is communicated with a pipeline between the lift pump (32) and a water distribution main pipe (2), and the liquid level sensor B (28) is communicated with the water outlet (25), a flow meter (29) is arranged between a line for connecting the lift pump (32) and the PLC control cabinet (34) and a pipeline for connecting the lift pump (32) and the water distribution main pipe (2).
9. An upflow electrocatalytic hydrolytic acidification reactor as in claim 1, wherein the sidewall of the reactor body (33) is provided with a plurality of water intake ports (12), and the plurality of water intake ports (12) are respectively communicated with the loop reaction zone, the clean water zone, the cathode (22) and the anode (20).
10. An upflow electrocatalytic hydrolysis acidification reactor as claimed in claim 1, wherein the water distribution heads (1) at the bottom of the circular reaction zone are distributed on three virtual circles concentric with the center of the bottom of the circular reaction zone, the three virtual circles are respectively a first circle, a second circle and a third circle with increasing diameters, the distance between the first circle and the second circle is the same as that between the second circle and the third circle, the first circle is provided with 4 water distribution heads (1) with an included angle of 90 degrees, the second circle is provided with 4 water distribution heads (1) with an included angle of 90 degrees, and the third circle is provided with 12 water distribution heads (1) with an included angle of 30 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911154739.7A CN110902808B (en) | 2019-11-22 | 2019-11-22 | Up-flow type electrocatalysis hydrolysis acidification reactor |
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| CN201911154739.7A CN110902808B (en) | 2019-11-22 | 2019-11-22 | Up-flow type electrocatalysis hydrolysis acidification reactor |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202785799U (en) * | 2012-07-23 | 2013-03-13 | 上海海姆环境工程有限公司 | Novel hydrolyzing and acidifying device |
| CN205953665U (en) * | 2016-07-04 | 2017-02-15 | 河北天友环保工程有限公司 | Compound hydrolytic acidification effluent treatment plant of upflow |
| CN206014508U (en) * | 2016-08-26 | 2017-03-15 | 武汉天源环保股份有限公司 | Percolate UASB anaerobic system external efficient circulation water distribution systems |
| CN108793399A (en) * | 2018-06-11 | 2018-11-13 | 大连民族大学 | External immersion electro-catalysis anaerobic membrane biological reaction device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202785799U (en) * | 2012-07-23 | 2013-03-13 | 上海海姆环境工程有限公司 | Novel hydrolyzing and acidifying device |
| CN205953665U (en) * | 2016-07-04 | 2017-02-15 | 河北天友环保工程有限公司 | Compound hydrolytic acidification effluent treatment plant of upflow |
| CN206014508U (en) * | 2016-08-26 | 2017-03-15 | 武汉天源环保股份有限公司 | Percolate UASB anaerobic system external efficient circulation water distribution systems |
| CN108793399A (en) * | 2018-06-11 | 2018-11-13 | 大连民族大学 | External immersion electro-catalysis anaerobic membrane biological reaction device |
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