CN104118966A - A three-dimensional electric-biology-coupled water purification system with gas and water flowing at different directions and a water purification method - Google Patents
A three-dimensional electric-biology-coupled water purification system with gas and water flowing at different directions and a water purification method Download PDFInfo
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- CN104118966A CN104118966A CN201410313373.4A CN201410313373A CN104118966A CN 104118966 A CN104118966 A CN 104118966A CN 201410313373 A CN201410313373 A CN 201410313373A CN 104118966 A CN104118966 A CN 104118966A
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Abstract
A three-dimensional electric-biology-coupled water purification system with gas and water flowing at different directions and a water purification method are disclosed. A biological filtering material layer of the water purification system is disposed below a three-dimensional particle electrode layer. The periphery of the three-dimensional particle electrode layer is connected to a main electrode anode, the middle of the three-dimensional particle electrode layer is connected to a main electrode cathode, and the part between the main electrodes is filled with catalytic particle electrodes. An aeration water discharging chamber is connected to an aeration device. Gas and water in the whole system flow at different directions, wherein the gas flows from bottom to top and the water flows from top to bottom. The water purification method includes steps of: (1) feeding raw water into a water distributing chamber; (2) performing three-dimensional electrocatalytic oxidation; (3) physically filtering and intercepting; (4) performing aerobic biological treatment; (5) simultaneously allowing the gas to be in full contact with sewage flowing from top to bottom in the biological filtering material layer and in the three-dimensional particle electrode layer; and (6) discharging purified water. By interaction of the electrocatalytic oxidation, the physical filtering and the aerobic biological treatment, predetermined treating effects can be achieved and stable water quality of the discharged water.
Description
Technical field
The invention belongs to technical field of waste water processing, particularly relate to a kind of three-dimensional electric biological coupling water cleaning systems of air water anisotropic flow and process for purifying water that can be used for sewage disposal.
Background technology
Along with expanding economy, the hardly degraded organic substance containing in municipal effluent is on the increase, take on the one hand remove the traditional waste water treatment process that organism and nutritive substance are object can not be completely by its removal, cause receiving water body and excess sludge to receive the pollution on ground, and then affect city water factory source water and quality of groundwater; On the other hand, conventional coagulation, precipitation, filtration handling technology of water supply do not have obvious removal effect to quite a few material.Therefore, carry out urban sewage treatment technology research, for controlling hardly degraded organic substance discharge, avoiding potential Ecological Environment Crisis to be extremely important.
Method of chemical treatment utilizes the effect of chemical reaction, transform, impurity in separated sewage, mainly comprise chemical reagent oxidizes method, chemical reagent Coagulation Method and electrochemical process, wherein electrochemical process has wide adaptability, convenient and flexible operation, without adding redox agent, the feature such as environmentally friendly, electrochemical techniques are subject to extensive concern both domestic and external, particularly in the development of power industry, mass transfer theory, on the improved basis of Materials science and test apparatus, this technology progressively becomes day by day city domestic sewage treatment technology widely of a kind of application, have a good application prospect.Electrochemistry essence is the inhomogeneous reaction of carrying out at electrode surface, but traditional electrochemical techniques be take two-dimensional electrode as basis, reactant must arrive interface could participate in reaction, common two-dimensional flat plate is difficult for realizing this goal, and granule electrode can effectively increase electrode surface area, promote the migration of reactant, accelerate speed of reaction. therefore, the focus of people's research in recent years starts to turn to and utilizes three dimensional particles electrode to carry out wastewater treatment.Three dimensional particles electrode is between traditional two-dimentional electrolytic tank electrode, to load granular or other fragmental working electrode material, makes to load work materials surface charging, becomes a new utmost point (the 3rd utmost point), on working electrode material surface, electrochemical reaction can occur.Be applicable to conductivity of waste water low, the little reaction system of limit current density in the low or system of the slow-footed occasion of electrolytic reaction and speed of reaction own.
Biological process is in current wastewater treatment, to use one of the most ripe technique, but slow to complicated hazardous contaminant degradation rate, decomposes not thoroughly, can lose corresponding activity because of poisoning what is more.Electrochemical process can be oxidized to difficult degradation macromolecule organic low molecule organic matter or be mineralized into carbonic acid gas quickly and efficiently, and its processing power is strong and simple to operate, but exists energy consumption large, the high deficiency of working cost., by both effective combinations, be how that current water treatment field is badly in need of the problem solving.
Summary of the invention
The object of the invention is to solve the above problems, the three-dimensional electric biological coupling water cleaning systems of a kind of air water anisotropic flow and process for purifying water are provided.
For addressing the above problem, the present invention includes water distributing area, the three-dimensional electric biological coupling of anisotropic flow pond, aeration water-supplying chamber.
The described three-dimensional electric biological coupling of anisotropic flow pond comprises three dimensional particles electrode layer and the biological filter bed of material, three dimensional particles electrode layer is positioned at biological filter bed of material top, be communicated with main electrode anode around, the middle main electrode negative electrode that connects, main electrode anode and main electrode negative electrode are respectively titanium net and stainless steel, catalyst particle electrode is filled between main electrode, water after three dimensional particles electrode layer is processed enters the biological filter bed of material by plastic multi hole plate from three dimensional particles electrode layer bottom, biological filter bed of material bottom is connected with supporting layer, supporting layer is connected with aeration water-supplying chamber by plastic multi hole plate, air water is incorgruous flowing in water cleaning systems, gas from bottom to top, water from top to bottom.
The three-dimensional electric biological coupling of described anisotropic flow pond is cylinder shape, three dimensional particles electrode layer and inhale biological filter bed of material diameter just as, aspect ratio is 3:10, loads respectively 3-5mm zinc-aluminium waste residue base granule electrode and 3-5mm porous composite fly ash filtrate.
Described aeration water-supplying chamber is provided with aeration plate, aeration tube, back flushing water inlet pipe, rising pipe, and air compressor is connected with aeration tube, and backwash pump is connected with back flushing water inlet pipe.
Adopt the three-dimensional electric biological coupling process for purifying water of a kind of air water anisotropic flow described above, comprise the steps: that (1), to elevated tank introducing sewage, enters water distributing area; (2) to aeration water-supplying chamber, pass into pressurized air, air water volume ratio is 5:1-3:1; (3) sewage, through water distributing area, enters three dimensional particles electrode layer, then passes through the biological filter bed of material, finally from aeration water-supplying chamber, flows into water purification rising pipe and discharges; (4) simultaneously, gas, by aeration water-supplying chamber, enters the biological filter bed of material, then passes through three dimensional particles electrode layer, does not finally have the gas utilizing to overflow from water distributing area; (5), at three dimensional particles electrode layer, direct supply is connected with titanium net, stainless steel electrode respectively by anode line, cathode rays, and 0-12V voltage is provided, and carries out electrochemical reaction; (6) after operation for some time, the three-dimensional electric biological coupling water cleaning systems of anisotropic flow is carried out to back flushing, first air purge 3 minutes, then washing and air purge 5 minutes simultaneously, then wash 8 minutes.
Beneficial effect of the present invention: sewage is first-selected by after Electrocatalysis Degradation, and the water quality that changes sewage is more easily utilized it by aerobe, thereby improves the treatment effect of whole reactor.
Accompanying drawing explanation
Fig. 1 is the three-dimensional electric biological coupling water cleaning systems schema of a kind of air water anisotropic flow of the present invention, in conjunction with this figure, is described further.
Accompanying drawing 1 is schematic flow sheet of the present invention.
In Fig. 1: 1 direct supply, 2 anode lines, 3 cathode rays, 4 granule electrodes, 5 filtrates, 6 plastic multi hole plates, 7 air compressor, 8 aeration plates, 9 backwashing pumps, 10 water purification rising pipes, 11 titanium nets, 12 stainless steel electrodes, 13 aeration water-supplying chamber, the 14 biological filter bed of materials, 15 three dimensional particles electrode layers, 16 elevated tanks, 17 waste pipes, 18 back flushing rising pipes, 19 back flushing water inlet pipes, 20 aeration tubes, 21 water distributing areas, 22 supporting layers.
Embodiment
Embodiment mono-:
Accompanying drawing is a kind of specific embodiment of the present invention, this embodiment comprises that the sewage in elevated tank 13 enters water distributing area 21 through waste pipe 17, sewage in water distributing area 21 enters three dimensional particles electrode layer 15, three dimensional particles electrode layer 15 outsides are connected to direct supply 1, direct supply 1 is by anode line 2, cathode rays 3 respectively with three dimensional particles electrode layer 15 in titanium net 11, stainless steel electrode 12 is connected, water after three dimensional particles electrode layer 15 is processed enters the biological filter bed of material 14, water after the biological filter bed of material 14 is processed enters aeration water-supplying chamber 13, finally from aeration water-supplying chamber 13, flowing into water purification rising pipe 10 discharges, simultaneously, air compressor 7 is inflated aeration plate 8 by aeration tube, gas passes through aeration water-supplying chamber 13 successively, supporting layer 22, the biological filter bed of material 14, three dimensional particles electrode layer 15, water distributing area 21, finally there is no gas 21 effusions from water distributing area that utilize.
Sewage in elevated tank 13 is entered to water distributing area 21 through waste pipe 17, sewage in water distributing area 21 enters three dimensional particles electrode layer 15, inside fill out zinc-aluminium waste residue base granule electrode 4, height 300mm, three dimensional particles electrode layer 15 outsides are connected to direct supply 1, direct supply 1 is by anode line 2, cathode rays 3 respectively with three dimensional particles electrode layer 15 in titanium net 11, stainless steel electrode 12 is connected, water after three dimensional particles electrode layer 15 is processed enters the biological filter bed of material 14, filtrate is porous composite fly ash filtrate 5, high 1000mm, water after the biological filter bed of material 14 is processed enters aeration water-supplying chamber 13, finally from aeration water-supplying chamber 13, flow into water purification rising pipe and discharge 10, simultaneously, air compressor 7 is inflated aeration plate 8 by aeration tube, gas passes through aeration water-supplying chamber 13 successively, supporting layer 22, the biological filter bed of material 14, three dimensional particles electrode layer 15, water distributing area 21, finally there is no gas 21 effusions from water distributing area that utilize, when reaching predetermined head loss, the three-dimensional electric biological coupling system of anisotropic flow is carried out to back flushing, first by air compressor 7, carry out air purge, then opening backwash pump 9 pressurization carries out air water to the three-dimensional electric biological coupling water cleaning systems of air water anisotropic flow and combines flushing, close afterwards air compressor 7, with backwash pump 9 pressurizations, the three-dimensional electric biological coupling water cleaning systems of air water anisotropic flow is washed again, the water of back flushing is discharged through back flushing rising pipe 18.
Adopt the three-dimensional electric biological coupling process for purifying water of above-mentioned a kind of air water anisotropic flow to comprise the steps: that (1) water inlet hydraulic load is 6m
3/ m
2h, enters water distributing area 21 through waste pipe; (2) to aeration water-supplying chamber 13, pass into pressurized air, air compressor pressure 0.3MPa, air water volume ratio is 5:1; (3) sewage is through water distributing area 21, enter three dimensional particles electrode layer 15, pass through again the biological filter bed of material 14, finally from aeration water-supplying chamber 13, flow into water purification rising pipe 10 and discharge (4) simultaneously, gas is by aeration water-supplying chamber 13, enter the biological filter bed of material 14, then pass through three dimensional particles electrode layer 15, finally there is no gas 21 effusions from water distributing area that utilize; (5), at three dimensional particles electrode layer 15, direct supply 1 is connected with titanium net 11, stainless steel electrode 12 respectively by anode line 2, cathode rays 3, and 12V voltage is provided, and carries out electrochemical reaction; (6) after operation for some time, the three-dimensional electric biological coupling water cleaning systems of air water anisotropic flow is carried out to back flushing, first air purge 3 minutes, then washing and air purge 5 minutes simultaneously, then wash 8 minutes.
Embodiment bis-:
The three-dimensional electric biological coupling water cleaning systems of air water anisotropic flow of this specific embodiment is identical with the three-dimensional electric biological coupling water cleaning systems of air water anisotropic flow of specific embodiment one.
This process for purifying water is with specific embodiment one process for purifying water difference: the air water volume ratio of aeration is 4:1.
Embodiment tri-:
The three-dimensional electric biological coupling water cleaning systems of air water anisotropic flow of this specific embodiment is identical with the three-dimensional electric biological coupling water cleaning systems of air water anisotropic flow of specific embodiment one.
This process for purifying water is with specific embodiment one process for purifying water difference: the air water volume ratio of aeration is 3:1.
Claims (7)
1. the three-dimensional electric biological coupling water cleaning systems of air water anisotropic flow and a process for purifying water, is characterized in that: this system is by water distributing area, the three-dimensional electric biological coupling of anisotropic flow pond, and aeration water-supplying chamber forms; Three dimensional particles electrode layer (15), the biological filter bed of material (14) are established in the three-dimensional electric biological coupling of anisotropic flow pond, and three dimensional particles electrode layer (15) is positioned at the biological filter bed of material (14) top; Three dimensional particles electrode layer (15) outside is connected to direct supply (1), and direct supply (1) is connected with titanium net (11), stainless steel electrode (12) in three dimensional particles electrode layer (15) respectively by anode line (2), cathode rays (3); Aeration water-supplying chamber (13) is connected with supporting layer (22) by plastic multi hole plate (6); Air water is incorgruous flowing in water cleaning systems, and from bottom to top, water from top to bottom for gas.
2. air water anisotropic flow claimed in claim 1 electricity biological coupling water cleaning systems and process for purifying water, it is characterized in that: described aeration water-supplying chamber (13) is provided with aeration plate (8), aeration tube (20), back flushing water inlet pipe (19), water purification rising pipe (10), air compressor (7) is connected with aeration tube (20), and backwash pump (11) is connected with back flushing water inlet pipe (19).
3. air water anisotropic flow electricity biological coupling water cleaning systems claimed in claim 1 and process for purifying water, is characterized in that: three dimensional particles electrode layer (15) is placed on the biological filter bed of material (14), and its aspect ratio is for being 3:10.
4. air water anisotropic flow electricity biological coupling water cleaning systems claimed in claim 1 and process for purifying water, is characterized in that: tie up surrounding's connection main electrode anode of granule electrode layer (15), centre connects main electrode negative electrode, and catalyst particle electrode is filled between main electrode.
5. air water anisotropic flow electricity biological coupling water cleaning systems claimed in claim 1 and process for purifying water, is characterized in that: three dimensional particles electrode layer (15) is filled to zinc-aluminium waste residue base granule electrode (4).
6. air water anisotropic flow claimed in claim 1 electricity biological coupling water cleaning systems and process for purifying water, it is characterized in that: three dimensional particles electrode layer (15), the biological filter bed of material (14) series connection combination from top to bottom, electrocatalysis and biological action are coupling in a reactor, have strengthened whole treatment effect.
7. air water anisotropic flow electricity biological coupling water cleaning systems claimed in claim 1 and process for purifying water, is characterized in that: the biological filter bed of material (14) is filled to porous composite fly ash filtrate (5).
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| CN201410313373.4A CN104118966B (en) | 2014-07-03 | 2014-07-03 | The three-dimensional electric biological coupling water cleaning systems of a kind of air water anisotropic flow and process for purifying water |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105523626A (en) * | 2016-01-15 | 2016-04-27 | 济南大学 | Water purifying system for nickel-plating wastewater and water purifying method |
| CN105541034A (en) * | 2016-01-15 | 2016-05-04 | 济南大学 | Galvanization wastewater purification system and method |
| CN105668923B (en) * | 2016-01-15 | 2018-03-23 | 济南大学 | A kind of tin plating waste water water cleaning systems and process for purifying water |
| CN111960611A (en) * | 2020-07-30 | 2020-11-20 | 山东建筑大学 | Sewage advanced treatment process based on three-dimensional porous electrode filler |
| CN113149343A (en) * | 2021-03-26 | 2021-07-23 | 北京城市排水集团有限责任公司 | Electrochemical nitrogen and phosphorus removal device and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1749177A (en) * | 2005-07-07 | 2006-03-22 | 天津大学 | Electric biological processing device and method for waste water containing heavy metal ion and non-degradable organism |
| CN101928066A (en) * | 2010-01-30 | 2010-12-29 | 大连理工大学 | Electrically enhanced internal anaerobic zero-valent iron reactor |
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2014
- 2014-07-03 CN CN201410313373.4A patent/CN104118966B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1749177A (en) * | 2005-07-07 | 2006-03-22 | 天津大学 | Electric biological processing device and method for waste water containing heavy metal ion and non-degradable organism |
| CN101928066A (en) * | 2010-01-30 | 2010-12-29 | 大连理工大学 | Electrically enhanced internal anaerobic zero-valent iron reactor |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105523626A (en) * | 2016-01-15 | 2016-04-27 | 济南大学 | Water purifying system for nickel-plating wastewater and water purifying method |
| CN105541034A (en) * | 2016-01-15 | 2016-05-04 | 济南大学 | Galvanization wastewater purification system and method |
| CN105668923B (en) * | 2016-01-15 | 2018-03-23 | 济南大学 | A kind of tin plating waste water water cleaning systems and process for purifying water |
| CN105541034B (en) * | 2016-01-15 | 2018-07-10 | 济南大学 | A kind of galvanized liquid waste water cleaning systems and process for purifying water |
| CN111960611A (en) * | 2020-07-30 | 2020-11-20 | 山东建筑大学 | Sewage advanced treatment process based on three-dimensional porous electrode filler |
| CN111960611B (en) * | 2020-07-30 | 2021-12-21 | 山东建筑大学 | Sewage advanced treatment process based on three-dimensional porous electrode filler |
| CN113149343A (en) * | 2021-03-26 | 2021-07-23 | 北京城市排水集团有限责任公司 | Electrochemical nitrogen and phosphorus removal device and method |
| CN113149343B (en) * | 2021-03-26 | 2022-05-17 | 北京城市排水集团有限责任公司 | Electrochemical nitrogen and phosphorus removal device and method |
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