CN211226789U - Hardly biodegradable organic wastewater treatment equipment - Google Patents
Hardly biodegradable organic wastewater treatment equipment Download PDFInfo
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- CN211226789U CN211226789U CN201921508338.2U CN201921508338U CN211226789U CN 211226789 U CN211226789 U CN 211226789U CN 201921508338 U CN201921508338 U CN 201921508338U CN 211226789 U CN211226789 U CN 211226789U
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Abstract
The utility model discloses a difficult biodegradable organic waste water treatment equipment, include: the membrane biological reaction tank is internally provided with a partition plate which divides the membrane biological reaction tank into an upflow zone and a downflow zone, and water can circularly flow between the upflow zone and the downflow zone; a membrane separation component is arranged in the upflow zone, an aeration head is arranged below the membrane separation component, the aeration head is communicated with a compressed air pipe, and a coagulant adding unit is arranged at the upper part of the upflow zone; the flow reducing area is provided with an electric flocculation unit; the water inlet pipe is communicated with the water inlet of the membrane biological reaction tank; and the water outlet pipe is communicated with a water outlet of the membrane separation component, and a suction pump is arranged on the water outlet pipe. The utility model discloses make the play water can reach "urban sewage treatment plant pollutant discharge standard" (GB 18918-2002) one-level emission standard A standard to treatment facility can move for a long time steadily, and membrane module chemical agent cleaning frequency is low.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, more specifically relates to a difficult biodegradable organic waste water treatment equipment.
Background
With the development of industry and agriculture, a large amount of toxic and nondegradable organic matters such as halogenated compounds, azo-containing compounds, nitro-aromatic compounds and the like are generated. The compounds are widely applied to production and life of people, enter the natural environment through various ways, and have the characteristics of long-term residue, high toxicity and the like. Some of them have teratogenic or carcinogenic effects, can be bio-accumulated in the food chain, and seriously threaten the life safety of human beings. In the prior art, three methods for treating organic wastewater difficult to degrade mainly exist, namely a coagulating sedimentation method, an advanced oxidation method and a Membrane Bioreactor (MBR) method. The coagulating sedimentation method is characterized in that a high-efficiency flocculating agent is directly added into the organic wastewater difficult to degrade, so that a part of organic matters and suspended matters can be removed, but only a part of organic matters and suspended matters can be removed, the effluent cannot reach the discharge standard, the running cost is high, and the application range is limited. The advanced oxidation method is to remove organic matters in water by oxidation with photocatalytic oxidation, ultrasonic cavitation, wet oxidation or strong oxidizing substances such as ozone, chlorine dioxide, hydrogen peroxide and the like, but cannot be applied to large projects due to high investment and operation cost.
A Membrane Bioreactor (MBR) is a sewage treatment process combining a membrane separation technology and a bioreactor, combines membrane separation and biodegradation, effectively degrades organic matters by utilizing high-concentration activated sludge, combines membrane separation and biodegradation, and replaces a secondary sedimentation tank in a common bioreactor with a membrane separation device, thereby obtaining high-efficiency solid-liquid separation effect. MBR has the advantages of simple operation and no secondary pollution, so that MBR is the first-choice treatment technology of the wastewater. However, the technology still has its own defects, and the problem of operation energy consumption is a major bottleneck limiting the extensive application of the MBR, wherein the aeration energy consumption is the root cause determining the operation energy consumption of the MBR, and accounts for more than 80% of the whole operation energy consumption. In addition, because the membrane is easily polluted in the operation process, namely, particles, colloidal particles or solute macromolecules in the feed liquid contacting with the membrane have physical, chemical, biochemical or mechanical actions with the membrane, the adsorption and deposition in the membrane surface or membrane pores and the accumulation of microorganisms on a membrane water interface are caused, the membrane pore size is reduced or blocked, the phenomenon that the permeation flow and the separation characteristic of the membrane are greatly reduced is caused, the membrane flux is reduced, the membrane cleaning frequency and the membrane replacement frequency are increased, the efficiency and the service life of the membrane module are directly influenced, and the wide application of the membrane module in practice is hindered. Therefore, the invention provides a new MBR process which can efficiently remove pollutants, uses less chemical cleaning or does not need chemical cleaning control as much as possible, enables a system to continuously and stably operate, and ensures the quality and the yield of effluent, and has become a hot problem for research of water treatment technicians.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects of the prior art and providing a device for treating organic wastewater difficult to biodegrade. The treatment equipment can efficiently degrade organic pollutants which are difficult to biodegrade in water, the effluent can reach the A standard of the first-level emission standard of pollutant emission Standard of municipal wastewater treatment plant (GB 18918-2002), the treatment equipment can stably operate for a long time, the cleaning frequency of the membrane component chemical agent is low, and the operation cost is greatly reduced.
In order to achieve the above object, the present invention provides a device for treating organic wastewater difficult to biodegrade, comprising:
the membrane biological reaction tank is internally provided with a partition plate, the partition plate divides the membrane biological reaction tank into an upflow zone and a downflow zone, and water can circularly flow between the upflow zone and the downflow zone; a membrane separation assembly is arranged in the upflow zone, an aeration head is arranged below the membrane separation assembly and communicated with a compressed air pipe, and a coagulant adding unit is arranged at the upper part of the upflow zone; the flow reducing area is provided with an electric flocculation unit;
the water inlet pipe is communicated with the water inlet of the membrane biological reaction tank;
and the water outlet pipe is communicated with the water outlet of the membrane separation component, and a suction pump is arranged on the water outlet pipe.
Preferably, one end of the partition plate in the vertical direction is lower than the liquid level of the membrane biological reaction tank, so that the water flow in the upflow zone can flow to the downflow zone, and the other end of the partition plate and the inner bottom surface of the membrane biological reaction tank form a backflow gap, so that the water flow in the downflow zone can flow back to the upflow zone.
Preferably, the coagulant adding unit is AlCl3And a coagulant adding unit.
Preferably, the electric flocculation unit comprises a cathode plate, a soluble anode plate and a power supply, wherein the cathode plate and the soluble anode plate are connected with the power supply; the cathode plate is an inert electrode plate, and the soluble anode plate is a metal aluminum electrode plate.
Preferably, the distance between the polar plates of the cathode plate and the soluble anode plate is 2-4 cm.
Preferably, the soluble anode plate is connected with the positive pole of the power supply, and the cathode plate is connected with the negative pole of the power supply.
Preferably, the aeration head is provided in plurality.
Preferably, the suction pump is connected to a time relay.
Preferably, the device for treating the organic wastewater difficult to biodegrade further comprises a sludge discharge pipe, and the sludge discharge pipe is communicated with the bottom of the membrane biological reaction tank.
Preferably, the membrane used in the membrane separation module has a pore size of 0.4 to 0.8 μm.
The technical scheme of the utility model has following advantage:
(1) in the utility model, the traditional aluminum salt AlCl is added in the upflow zone of the membrane biological reaction tank3Coagulant, AlCl3After hydrolysis, the hydrolysate is converted into monomer and oligomer, and the hydrolysate is distributed uniformly in the mixed solution, has strong infiltration capacity to the inside of the activated sludge microbial floccule and is combined with the activated sludge microbial micrococcus. Meanwhile, aluminum in the hydrolysate is mainly distributed in the center of the small flocculating constituent through precipitation to form a microcrystal core, the small microbial flocculating constituent is gathered by taking the microcrystal core as the center to form smaller compact particles, and along with the gradual formation of crystal nuclei, more and more microorganisms are gathered on the crystal nuclei to grow to form the microbial flocculating constituent with certain particle size and higher mechanical strength. Higher mechanical strength indicates AlCl3The addition of the activated sludge microbial flocculant enables the structure of the activated sludge microbial flocculant to be more compact, and the microbes in the activated sludge microbial flocculant have good stability.
(2) In the utility model, the water-saving device is provided with a water-saving valve,sewage passes through AlCl in upflow zone3After coagulation reaction, the mixture enters a down-flow area, an electric flocculation device in the down-flow area carries out flocculation reaction, and Al generated by a soluble anode plate, namely an aluminum pole plate, is utilized under the action of an external voltage3+Hydrolyzing and polymerizing in solution to generate a series of polynuclear hydroxyl complex ions and hydroxides, and further flocculating the activated sludge microbial flocculating constituent in the mixed solution by utilizing the compression double electric layers and the adsorption electric neutralization and bridging action of the hydrolysis products to form a larger flocculating constituent. Meanwhile, part of the pollutants can be directly or indirectly oxidized and reduced on the electrode in the down-flow area to be removed from the wastewater.
(3) Because the utility model discloses well flocculating constituent size is great, contains abundant good oxygen, oxygen deficiency, anaerobic environment in the flocculating constituent, and this provides sufficient microenvironment for the existence of the microorganism of multiple different environment of adaptation for they have had more suitable environment, thereby provide convenient condition for degrading organic pollutant. Meanwhile, the growth and metabolism of microorganisms can be stimulated due to the existence of an external electric field, and the microbial cell membranes are expanded under the stimulation of a certain external electric field, so that nutrients can pass through the cell membranes more easily, and the growth of the microorganisms is promoted. In addition, the microorganism is in a specific electric field system, a certain amount of electrogenesis bacteria are attached to the anode plate and used as a catalyst to assist the microorganism in reducing organic matters, and hydrogen and electrons are generated on the cathode plate and used as continuous effective electron donors, so that the transfer rate of electrons in a biochemical reaction system is greatly increased, and the degradation rate of the microorganism in the system on organic pollutants is also increased.
(4) Due to AlCl3The synergistic effect of coagulation and electric flocculation makes the concentration of microbe in the membrane biological reaction tank high, the formed microbial flocculating constituent structure is compact, specific gravity is large, size is large, so that the flocculating constituent is prevented from breaking by air-water shearing force in the reaction tank, the stability of the flocculating constituent structure is maintained, at the same time, the structure of the flocculating constituent is compact and compressible, sedimentation performance is good, small and loose flocculating constituent in size in the system is few, the adsorption deposition on the membrane surface of MBR and the blockage in the membrane hole are greatly reduced, the membrane pollution is reduced, the service life of the membrane is prolonged, and after the membrane is polluted, the membrane is filteredThe cleaning method is simple and convenient, and the recovery rate of the membrane flux is high.
(5) The technical scheme of the utility model the activated sludge microorganism flocculating constituent that forms among the technical scheme is closely knit and the surface is more smooth, there is obvious border, because density and size will be much bigger for traditional activated sludge microorganism flocculating constituent, the in-process of aeration in membrane biological reaction pond, flocculating constituent volume and bubble volume differ little, make flocculating constituent and bubble be a collision relation, this kind of collision relation can not change along with the increase of activated sludge microorganism concentration in the membrane biological reaction pond, so gas-liquid area of contact can not reduce along with the increase of microorganism concentration yet, the opposite is that this kind of collision effect has played the effect of a stirring, make the interior gas-liquid mass transfer of membrane biological reaction pond in the aspect of have obvious advantage. Compared with the traditional MBR membrane bioreactor, the utility model needs the aeration quantity to be correspondingly reduced under the condition of maintaining the dissolved oxygen with the same concentration in the reaction tank, thereby saving the energy consumption.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout the exemplary embodiments of the present invention.
Fig. 1 shows a schematic structural view of an organic wastewater treatment apparatus according to an embodiment of the present invention.
Description of reference numerals:
1. a water inlet pipe; 2. a membrane biological reaction tank; 3. a partition plate; 4. an upflow zone; 5. a downcast zone; 6. A membrane separation module; 7. a compressed air pipe; 8. an aeration head; 9. a coagulant adding unit; 10. a soluble anode plate; 11. a cathode plate; 12. a power source; 13. a water outlet pipe; 14. a suction pump; 15. sludge discharge pipe
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The utility model provides a difficult biodegradable organic waste water treatment equipment, this difficult biodegradable organic waste water treatment equipment includes:
the membrane biological reaction tank is internally provided with a partition plate, the partition plate divides the membrane biological reaction tank into an upflow zone and a downflow zone, and water can circularly flow between the upflow zone and the downflow zone; a membrane separation assembly is arranged in the upflow zone, an aeration head is arranged below the membrane separation assembly and communicated with a compressed air pipe, and a coagulant adding unit is arranged at the upper part of the upflow zone; the flow reducing area is provided with an electric flocculation unit;
the water inlet pipe is communicated with the water inlet of the membrane biological reaction tank;
and the water outlet pipe is communicated with the water outlet of the membrane separation component, and a suction pump is arranged on the water outlet pipe.
The utility model discloses in, contain the activated sludge microorganism in the membrane biological reaction pond, raw water (difficult biodegradable's organic waste water) gets into the rising flow district in the membrane biological reaction pond through the inlet tube, is equipped with the membrane separation subassembly in the rising flow district of membrane biological reaction pond, is equipped with the aeration head below the membrane separation subassembly, and the aeration head is installed on compressed air pipe, lets in the compressed air oxygen suppliment in to the membrane biological reaction pond, and the pollutant in the waste water is got rid of by the degradation under the effect of the activated sludge microorganism in the membrane biological reaction pond. And simultaneously, a coagulant adding unit is arranged in the upflow zone to add coagulant into the upflow zone for coagulation reaction, sewage in the upflow zone flows upwards under the action of bottom aeration and enters a downflow zone in the membrane biological reaction tank by crossing the partition plate, and an electric flocculation unit is arranged in the downflow zone to carry out electric flocculation reaction. The sewage in the down flow area flows back to the up flow area through the back flow gap at the bottom of the partition plate to form circular flow. Through the utility model discloses a water after treatment equipment handles can discharge up to standard or recycle as required after carrying out solid-liquid separation through the MBR separation membrane under the suction of suction pump.
In one example, one end of the partition plate in the vertical direction is lower than the liquid level of the membrane biological reaction tank so that the water flow in the upflow zone can flow to the downflow zone, and the other end of the partition plate and the inner bottom surface of the membrane biological reaction tank form a backflow gap so that the water flow in the downflow zone can flow back to the upflow zone.
In the utility model, preferably, the distance between one end of the division plate along the vertical direction and the liquid level of the membrane biological reaction tank can ensure that the flow velocity V of the sewage flowing to the downwash area is 0.7-1.0 m/s; the size of a backflow gap formed by the other end of the partition plate along the vertical direction and the inner bottom surface of the membrane biological reaction tank can ensure that the flow velocity V of sewage flowing through the backflow gap is 0.7-1.0 m/s.
In one example, the coagulant adding unit is an aluminum salt coagulant adding unit, preferably an aluminum salt coagulant adding pipe; further preferably, the aluminum salt coagulant adding unit is preferably AlCl3A coagulant adding unit; the preferred preference of the aluminum salt coagulant feeding pipe is AlCl3A coagulant adding pipe.
In one example, the electroflocculation unit comprises a cathode plate, a soluble anode plate, and a power source, the cathode plate and soluble anode plate being connected to the power source; the negative plate is an inert electrode plate, and the soluble anode plate is a metal aluminum electrode plate;
in one example, the plate spacing of the cathode plate and soluble anode plate is 2-4 cm.
In one example, the soluble anode plate is connected to the positive power supply and the cathode plate is connected to the negative power supply.
In the utility model discloses, the preferred DC power supply that is preferred to the power, and the power is preferred to be set up in the membrane biological reaction pond outside. The inert electrode plate can be a carbon electrode plate or a platinum electrode plate.
In one example, the aeration head is plural.
In one example, the suction pump is connected to a time relay.
The utility model discloses in, suction pump and time relay can be connected for electricity or communication. The suction pump adopts an intermittent operation mode, is controlled by a time relay, and adopts an intermittent suction operation mode aiming at leading the sludge deposited on the membrane surface to fall off from the membrane surface under the action of water power by periodically stopping the membrane filtration, so that the filtration performance of the membrane can be recovered.
In one example, the apparatus for treating organic wastewater difficult to biodegrade further comprises a sludge discharge pipe, wherein the sludge discharge pipe is communicated with the bottom of the membrane biological reaction tank.
In the utility model, preferably, the mud discharging pipe is also provided with a control valve; and the sludge in the membrane biological reaction tank is discharged periodically through a sludge discharge pipe.
In one example, the membrane used in the membrane separation module has a pore size of 0.4 to 0.8 μm.
The utility model also provides an organic wastewater treatment method adopts above-mentioned difficult biodegradable organic wastewater treatment facility, and this organic wastewater treatment method includes:
(1) firstly adding activated sludge microorganisms into the membrane biological reaction tank, then continuously adding a coagulant into the upflow zone and continuously introducing compressed air, and simultaneously starting an electrocoagulation unit in the downflow zone to carry out biodegradation, coagulation treatment and electrocoagulation treatment on raw water in the membrane biological reaction tank;
(2) and performing solid-liquid separation on the treated water through the membrane separation component under the suction action of the suction pump to obtain treated water.
In the utility model, the activated sludge microorganisms are added at one time in the initial stage of equipment operation, and the adding amount is 0.1-0.3 kgCOD/kgMLSS.d; then, continuously adding a coagulant in the operation process, and simultaneously starting an electric flocculation unit in the down-flow area, so that pollutants in the raw water are degraded and removed under the action of activated sludge microorganisms in the membrane biological reaction tank; and simultaneously, a coagulant adding unit is arranged in the upflow zone to add coagulant into the upflow zone for coagulation reaction, sewage in the upflow zone flows upwards under the action of bottom aeration and enters a downflow zone in the membrane biological reaction tank by crossing the partition plate, and an electric flocculation unit is arranged in the downflow zone to carry out electric flocculation reaction. The sewage in the down flow area flows back to the up flow area through the back flow gap at the bottom of the partition plate to form circular flow.
According to the utility model discloses, preferably, the suction pump is connected with time relay, and the water after the processing passes through under the intermittent type formula suction of suction pump separation membrane module carries out solid-liquid separation, obtains the treatment water.
The utility model discloses in, the suction pump adopts intermittent type operation mode, by time relay control, adopts intermittent type suction mode of operation to aim at through the filtration of periodic stop film, makes the deposit come off from the membrane surface under the hydraulic action at the surperficial mud of membrane, makes the filtering quality of membrane can resume.
According to the utility model, preferably, the air-water ratio of the continuously introduced compressed air is 20-50: 1;
the hydraulic retention time of the upflow zone is 10-18h, and the hydraulic retention time of the downflow zone is 30-50 min;
the adding concentration of the coagulant is 10-20mg/L based on the cation of the coagulant; the coagulant is an aluminum salt coagulant, preferably AlCl3；
The sludge load of the membrane biological reaction tank is 0.1-0.3 kgCOD/kgMLSS.d;
the current density of the electric flocculation unit is 25-100A/m2。
In the utility model, the adding concentration of the coagulant is 10-20mg relative to the adding concentration of the inlet water, namely, relative to 1L of inflow raw water.
The invention is further illustrated by the following examples:
examples
As shown in fig. 1, the present embodiment provides a nonbiodegradable organic wastewater treatment apparatus comprising: a membrane biological reaction tank 2, wherein a partition plate 3 is arranged in the membrane biological reaction tank 2, and the partition plate 3The membrane biological reaction tank 2 is divided into an upflow zone 4 and a downflow zone 5, and water can flow circularly between the upflow zone 4 and the downflow zone 5; a membrane separation assembly 6 is arranged in the upflow zone 4, a plurality of aeration heads 8 are arranged below the membrane separation assembly 6, the aeration heads 8 are communicated with a compressed air pipe 7, and a coagulant adding unit 9 is arranged at the upper part of the upflow zone 4; the down-flow area 5 is provided with an electric flocculation unit; the water inlet pipe 1 is communicated with the water inlet of the membrane biological reaction tank 2; the water outlet pipe 13 is communicated with the water outlet of the membrane separation component 6, and a suction pump 14 is arranged on the water outlet pipe 13; the sludge discharge pipe 15 is communicated with the bottom of the membrane biological reaction tank 2; one end of the partition plate 3 in the vertical direction is lower than the liquid level of the membrane biological reaction tank 2, so that the water flow in the upflow zone 4 can flow to the downflow zone 5, and the other end of the partition plate and the inner bottom surface of the membrane biological reaction tank 2 form a backflow gap, so that the water flow in the downflow zone 5 can flow back to the upflow zone 4; the coagulant adding unit 9 is AlCl3A coagulant adding pipe. The electric flocculation unit comprises a cathode plate 11, a soluble anode plate 10 and a power supply 12, wherein the soluble anode plate 10 is connected with the positive pole of the power supply 12, and the cathode plate 11 is connected with the negative pole of the power supply 12; the distance between the cathode plate 11 and the soluble anode plate 10 is 3 cm; the soluble anode plate 10 is a metal aluminum electrode plate, and the cathode plate 11 is a carbon electrode plate; the suction pump 14 is connected to a time relay (not shown); the pore size of the membrane used in the membrane separation module 6 was 0.6 μm.
The organic wastewater treatment method is characterized by comprising the following steps of:
(1) firstly, active sludge microorganisms are added into the membrane biological reaction tank 2, then coagulant is continuously added into the upflow zone 4, compressed air is continuously introduced, and meanwhile, the electrocoagulation unit of the downflow zone 5 is started, so that raw water is subjected to biodegradation, coagulation treatment and electrocoagulation treatment in the membrane biological reaction tank 2;
(2) the treated water is subjected to solid-liquid separation by the separation membrane module 6 under the intermittent suction action of the suction pump 14 to obtain treated water.
Wherein the gas-water ratio of the continuously introduced compressed air is 40: 1; the hydraulic retention time of the upflow zone 4 is 15h, and the hydraulic retention time of the downflow zone 5 is 42 min; with Al3+Meter, said AlCl3The adding concentration of (A) is 16 mg/L; the sludge load of the membrane biological reaction tank 2 is 0.16 kgCOD/kgMLSS.d; the current density of the electric flocculation unit is 55A/m2(ii) a The suction pump 14 is intermittently operated, and is started for 15min and stopped for 2 min.
The treatment method of the embodiment is adopted to treat the chemical organic wastewater containing phenols; the organic wastewater contains organic matters which are difficult to biodegrade, such as phenol, chlorophenol, aminophenol and the like, the CODcr content is 600mg/L, the BOD/COD is 0.22, and the biodegradability is poor; after the treatment method of the embodiment is used for treating the effluent, the CODcr concentration of the effluent is between 30 and 40mg/L, and the removal rate of organic matters is more than 93 percent. The effluent quality reaches the A standard of the first-class emission standard of pollutant emission Standard of urban wastewater treatment plant (GB 18918-2002).
The embodiment has the advantages that the membrane flux is hardly attenuated in the two-month operation, the sewage treatment effect is good, and the membrane pollution is well controlled.
The foregoing description of the embodiments of the invention has been presented for purposes of illustration and not limitation, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the illustrated embodiments.
Claims (10)
1. A nonbiodegradable organic wastewater treatment apparatus, characterized by comprising:
the membrane biological reaction tank is internally provided with a partition plate, the partition plate divides the membrane biological reaction tank into an upflow zone and a downflow zone, and water can circularly flow between the upflow zone and the downflow zone; a membrane separation assembly is arranged in the upflow zone, an aeration head is arranged below the membrane separation assembly and communicated with a compressed air pipe, and a coagulant adding unit is arranged at the upper part of the upflow zone; the flow reducing area is provided with an electric flocculation unit;
the water inlet pipe is communicated with the water inlet of the membrane biological reaction tank;
and the water outlet pipe is communicated with the water outlet of the membrane separation component, and a suction pump is arranged on the water outlet pipe.
2. The apparatus for treating refractory organic wastewater as claimed in claim 1, wherein one end of the partition plate in the vertical direction is lower than the liquid level of the membrane biological reaction tank so that the water flow in the up-flow region can flow to the down-flow region, and the other end forms a backflow gap with the inner bottom surface of the membrane biological reaction tank so that the water flow in the down-flow region can flow back to the up-flow region.
3. The apparatus for treating hardly biodegradable organic wastewater according to claim 1, wherein the coagulant adding unit is AlCl3And a coagulant adding unit.
4. The apparatus for treating refractory organic wastewater according to claim 1, wherein the electric flocculation unit comprises a cathode plate, a soluble anode plate and a power supply, the cathode plate and the soluble anode plate are connected with the power supply; the cathode plate is an inert electrode plate, and the soluble anode plate is a metal aluminum electrode plate.
5. The apparatus for treating refractory organic wastewater as claimed in claim 4, wherein the distance between the cathode plate and the soluble anode plate is 2-4 cm.
6. The apparatus of claim 4, wherein the soluble anode plate is connected to the positive power supply and the cathode plate is connected to the negative power supply.
7. The apparatus for treating hardly biodegradable organic wastewater according to claim 1, wherein said aeration head is provided in plurality.
8. The apparatus for treating refractory organic wastewater as defined in claim 1, wherein the suction pump is connected to a time relay.
9. The apparatus for treating refractory organic wastewater according to claim 1, further comprising a sludge discharge pipe, wherein the sludge discharge pipe is communicated with the bottom of the membrane biological reaction tank.
10. The apparatus for treating organic wastewater difficult to biodegrade according to claim 1, wherein the membrane used in the membrane separation module has a pore size of 0.4-0.8 μm.
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| CN110498574A (en) * | 2019-09-10 | 2019-11-26 | 武汉轻工大学 | A kind of difficult for biological degradation organic waste water treating device and processing method |
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