CN101269863A - Apparatus and method for removing phosphor and organic matter in sewage water with electric flocculation membrane bioreactor - Google Patents
Apparatus and method for removing phosphor and organic matter in sewage water with electric flocculation membrane bioreactor Download PDFInfo
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- CN101269863A CN101269863A CNA2008101043969A CN200810104396A CN101269863A CN 101269863 A CN101269863 A CN 101269863A CN A2008101043969 A CNA2008101043969 A CN A2008101043969A CN 200810104396 A CN200810104396 A CN 200810104396A CN 101269863 A CN101269863 A CN 101269863A
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- 239000012528 membrane Substances 0.000 title claims abstract description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 32
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000005189 flocculation Methods 0.000 title claims abstract description 22
- 230000016615 flocculation Effects 0.000 title claims abstract description 22
- 239000010865 sewage Substances 0.000 title claims description 31
- 239000005416 organic matter Substances 0.000 title abstract 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910052742 iron Inorganic materials 0.000 claims abstract description 18
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 17
- 239000004411 aluminium Substances 0.000 claims abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 6
- 239000010452 phosphate Substances 0.000 claims abstract description 6
- 230000005611 electricity Effects 0.000 claims description 13
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims description 10
- 238000005868 electrolysis reaction Methods 0.000 claims description 7
- 230000006866 deterioration Effects 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- 229910021645 metal ion Inorganic materials 0.000 claims description 5
- 230000002906 microbiologic effect Effects 0.000 claims description 5
- 241000628997 Flos Species 0.000 claims description 3
- -1 iron ions Chemical class 0.000 abstract description 16
- 238000005516 engineering process Methods 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 7
- 244000005700 microbiome Species 0.000 abstract description 3
- 239000002351 wastewater Substances 0.000 abstract description 3
- 238000004065 wastewater treatment Methods 0.000 abstract description 3
- 239000013043 chemical agent Substances 0.000 abstract description 2
- 238000011109 contamination Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 239000010797 grey water Substances 0.000 abstract 1
- 239000010802 sludge Substances 0.000 description 12
- 229910052698 phosphorus Inorganic materials 0.000 description 10
- 239000011574 phosphorus Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000000126 substance Substances 0.000 description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000008186 active pharmaceutical agent Substances 0.000 description 4
- 238000012851 eutrophication Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- QGZKDVFQNNGYKY-OUBTZVSYSA-N Ammonia-15N Chemical compound [15NH3] QGZKDVFQNNGYKY-OUBTZVSYSA-N 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 238000009297 electrocoagulation Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 210000005056 cell body Anatomy 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010801 sewage sludge Substances 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000005422 algal bloom Substances 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 229920005588 metal-containing polymer Polymers 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 230000000050 nutritive effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Water Treatment By Electricity Or Magnetism (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a device and a method which are used for removing phosphor and organic matter in an electric flocculation film bioreactor, and belongs to the wastewater treatment field. The device uses the combination technology of the electric flocculation and the film bioreactor, that is, an iron plate or an aluminium plate is adopted to be used as an anode electrode, a plate electrode is electrolyzed to generate iron ions or aluminium ions which are combined with hydroxyl ions and phosphate radical ions in wastewater to form a flocculation body. The organic matter is degraded by microorganism in the film bioreactor to form mud, and the contamination is removed by the filtering of a micro filter membrane component, thereby the purpose of removing the phosphor and the organic matter from the wastewater is achieved. The device has the advantages of simple structure, no chemical agent put, simple operation and management, easy realization of automatic control, as well as good and stable yielding water quality, and is particularly suitable for departments, organizations, schools, building sites and subdistricts in areas lacking of water; the yielding water can be directly used as gray water, reuse water and landscape water.
Description
Technical field
The present invention relates to a kind of apparatus and method of sewage disposal, particularly relate to and adopt electricity flocculation binding film bio-reactor to remove phosphor in sewage and organic method and system thereof, belong to technical field of sewage.
Background technology
Membrane bioreactor is a kind of with membrane separation technique and the combined wastewater treatment and reuse technology of biological processing unit.This technology is owing to adopt membrane sepn efficiently to substitute second pond in the conventional activated sludge process, the solid-liquid separation efficiency height, and water outlet is good and stablize, but direct reuse; The microbial biomass that can keep high density in the reactor, the processing volume load is high, small accommodation area; The excess sludge generation is little; Convenient operation and management, level of automation is high.Membrane bioreactor since have above-mentioned traditional activated sludge process incomparable outstanding advantage, become present water-treatment technology field domestic and international research focus.The membrane bioreactor sewage disposal and the resource utilization engineering of considerable scale and quantity have been set up both at home and abroad.But also there is the not high defective of dephosphorization efficiency by using in membrane bioreactor at present, and water outlet phosphorus content difficulty reaches national grade one discharge standard.
The patent that relates to the membrane bioreactor dephosphorization all is based on biological phosphate-eliminating as " handling waste water to produce the method for low phosphorus effluent in membrane bioreactor " 200410025254.3 and " a kind of sequencing batch membrane bioreactor technique of intensified anti-nitrated phosphorous-removal " 200710011457.2, has the deficiency of flow process complexity and phosphor-removing effect less stable.And the electrocoagulation technology is because device is simple, easy to operate, do not need advantage such as chemical agent to receive researchist's concern.Up to the present also do not have an electricity flocculation and membrane bioreactor reinforced phosphor-removing, pass through the patent of membrane bioreactor biological degradation organism and ammonia nitrogen simultaneously.
Phosphorus and nitrogen are nutritive substances required in plant and the microorganism growth process.But when a large amount of phosphorus, when nitrogen enters water body, can make algal bloom, thereby cause body eutrophication.For checking the further deterioration of body eutrophication, various countries have made strict row's phosphorus standard at present, and U.S. EPA thinks that directly being discharged into the total phosphorus concentration that causes eutrophication in the water body is 0.05mg/L; Germany also brings up to 0.05mg/L with the Sewage Plant emission standard in order to control eutrophication; And China stipulates that in " urban wastewater treatment firm pollutant emission standard GB18918-2002 " one-level water outlet category-A standard total phosphorus must not surpass 0.5mg/L, and the category-B standard must not surpass 1mg/L.The efficient dephosphorization technology has become the hot issue of concern.
Phosphorus can not form oxysome or go back substance and discharge to atmosphere in water body, but has the performance that circulates mutually and transform with solid form and dissolving form.The sewage dephosphorization technology is developed based on this performance of phosphorus, and present phosphorus removing method mainly contains chemical precipitation method, biological phosphate-eliminating method, artificial swamp method, ion exchange method, reverse osmosis method, electroosmose process.The required added amount of chemical of chemical method is big, and the negatively charged ion of bringing into causes secondary pollution, the difficult processed of the mud of generation easily; There are deficiencies such as floor space is big, dephosphorization efficiency by using is low, fluctuation of service in biological phosphate-eliminating, makes its application be subjected to certain restriction.And ion exchange method, reverse osmosis method, the electroosmose process processing costs is too high and be difficult to popularization and application.
The electricity flocculence is to utilize metallic iron or aluminium to do the oxyhydroxide that anode electrolysis under the effect of electric current generates iron or aluminium, and the colloidalmaterial thereby the oxyhydroxide coherency that utilization produces is flocculated in the water makes water obtain a kind of electrochemical method that purifies.From electricity flocculation microprocess is to generate iron ion or aluminum ion under the effect of electric current earlier, and then with liquid in the hydroxide radical generation oxyhydroxide that reacts, thereby have throwing out.And if contain phosphate anion in the liquid, iron ion or aluminum ion can react with phosphate anion and generate the indissoluble material, reach the purpose of dephosphorization.Electricity flocculation combine with membrane Bio-reactor Technology both advantages are given full play to, and can change the character of the interior mixed solution of membrane bioreactor, alleviate the film pollution; Improve the biological activity in the membrane bioreactor, reactor can steady in a long-termly efficiently be moved, yet there are no relevant report.
Summary of the invention
In order to overcome the low deficiency of existing membrane bioreactor dephosphorization efficiency by using, the invention provides a kind of device and method of electric flocculation membrane bioreactor, being added in to a certain degree of electrocoagulation can increase sludge activity, reduce the organic concentration in sewage sludge viscosity, mud median size and the mixed solution supernatant liquor, delayed the generation that film pollutes to a certain extent, made the reactor can steady running in longer for some time.Advantages such as handle not only water outlet good stable later by this method, excess sludge production is little, and operational management is convenient also possess the advantage of efficient dephosphorization simultaneously.
Technical scheme of the present invention is achieved in that
The invention provides a kind of removal phosphor in sewage and organic electric flocculation plant, this device comprises intake pump, by the up-flow district with fall membrane bioreactor pond body that stream district constitutes, be arranged on membrane module and aerating system in the up-flow district, at least one group of battery lead plate is arranged in parallel in the body of membrane bioreactor pond, general apart from being 1～3cm between battery lead plate, battery lead plate is connected with current regulator power supply; Described battery lead plate anode adopts iron plate or aluminium sheet.
The present invention also provides a kind of electric flocculation membrane bioreactor to remove phosphor in sewage and organic method, it is characterized in that this method comprises following steps and carries out:
1) at least one group of battery lead plate that in the body of membrane bioreactor pond, be arranged in parallel, the battery lead plate spacing is 1～3cm, and described battery lead plate anode adopts iron plate or aluminium sheet, and negative electrode is a noble electrode;
2) sewage enters in the body of membrane bioreactor pond, applies voltage of direct-flow voltage regulation on battery lead plate, and current density is 20～80A/m
2
3) sewage is through microbiological deterioration in membrane bioreactor, and metal ion that electrolysis simultaneously produces and the phosphate radical in the sewage react, and generates floss, aspirates water outlet by going out water pump after membrane module filters;
4) phosphorous flco mixed solution in membrane bioreactor of electricity flocculation generation is discharged when spoil disposal.
In the technique scheme, on battery lead plate, apply voltage and adopt periodical operation.
The preferred technical solution of the present invention is: the spacing of battery lead plate is 2.0～3.0cm; Current density is 20～40A/m2.
The present invention compared with prior art, have the following advantages and the high-lighting effect: the present invention organically combines electricity flocculation and membrane bioreactor and is used for sewage dephosphorization and organism, being added in of first electrocoagulation to a certain degree increased sludge activity, reduce sewage sludge viscosity, organic concentration in mud median size and the mixed solution supernatant liquor, delayed the generation that film pollutes to a certain extent, make the reactor can steady running in longer for some time, second has reduced the cost of sewage dephosphorization, the 3rd makes reactor water outlet high-quality more, stable, the 4th has simplified the operation and the running maintenance work of sewage disposal.The iron ion or the aluminum ion dephosphorization that utilize the electricity flocculation to produce do not need to add any pharmaceutical chemicals in water.Organic pollutant in the sewage, ammonia nitrogen is removed through the microbiological deterioration major part, the suspended substance in the while sewage, the flocs unit that dephosphorization generates is trapped in the reactor under the effect of film, discharges system when spoil disposal.So this method can provide reliable and stable water quality.Only need electricity consumption in the operational process of the present invention, do not need labor management and manual maintenance substantially, easily be automated control.The present invention is particularly suitable for office, group, school, building site and the sub-district of water-deficient area, and middle water, reuse water, landscape water can be directly done in water outlet.
Description of drawings
Fig. 1 is an integrated artistic structural representation provided by the invention.
Among the figure: the 1-intake pump; The 2-current regulator power supply; The 3-battery lead plate; The 4-aerating system; The 5-membrane module; 6-up-flow district; The stream district falls in 7-; 8-goes out water pump; 9-membrane bioreactor reactor cell body; The 10-liquidometer.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is the structural representation that electric flocculation membrane bioreactor provided by the invention is removed phosphor in sewage and organism device.This device comprises intake pump 1, flow district's 7 membrane bioreactor pond bodies 9 that constitute by up-flow district 6 with falling, be arranged on membrane module 5 and aerating system 4 in the up-flow district, at least one group of battery lead plate 3 is arranged in parallel in institute's membrane bioreactor pond body, the battery lead plate spacing is generally 1～3cm, be preferably 2～3cm, battery lead plate is connected with current regulator power supply; Described battery lead plate anode adopts iron plate or aluminium sheet.Negative electrode is a noble electrode, for example titanium plate or Graphite Electrodes.
Processing method of the present invention is as follows: phosphorous and contain organism sewage and squeezed in the membrane bioreactor reactor cell body 9 by intake pump 1, liquid level in the reactor is controlled by liquid level control 10 and intake pump 1, the microbiological deterioration of organism in the sewage in reactor is removed, battery lead plate 3 is connected with current regulator power supply 2, apply volts DS on battery lead plate, current density is 20～80A/m
2, preferred current density is 20～40A/m
2Sewage is through microbiological deterioration in membrane bioreactor, and iron ion (or aluminum ion) the original position stripping that electrolysis simultaneously produces reacts with phosphate radical in the sewage, generates floss, filters the back through membrane module and aspirates water outlets by going out water pump 8; Phosphorous flco mixed solution in membrane bioreactor that the electricity flocculation produces is discharged when spoil disposal.Under the promoter action that electric field moves to particle, provide good condition for electricity flocculation efficient dephosphorization.For the iron ion (or aluminum ion) that makes generation can fully contact with phosphor in sewage, reduce the pollution of membrane module simultaneously and, under membrane module, carry out aeration by aerating system 4 for microorganism in the reactor provides competent oxygen.
The present invention's electricity throwing out mechanism is as follows: circuit is made up of external power supply and active metal battery lead plate, and active electrode is made anode, is generally iron plate or aluminium sheet.Electric current is with the electronic form transmission in external circuit, and electric current is then with the ionic species transmission, so certainly existing ionic oxidation, reduction process in solution (sewage).The oxidizing reaction of anode generation metal generates metal ion and oxygen, and negative electrode the reduction reaction of water then takes place and generates hydrogen, and is as follows as reaction formula:
M
(s)→M
(aq) m++ne
-
2H
2O
(l)→4H
+ (aq)+O
2(g)+4e
-
M
(aq) n++ne
-→M
(s)
2H
2O
(l)+2e
-→H
2(g)+2OH
-
The metal ion that dissolves in the water combines the generation coagulating agent rapidly with the hydroxide ion that negative electrode produces, and along with the difference of pH value isoperimetric foxing spare, not only has M (OH) n in water, also has the complex compound of water molecules and metal ion and metal hydroxides.Do to exist in the anodic solution on iron plate: Fe (H
2O)
6 3+, Fe (H
2O)
5(OH)
2+, Fe (H
2O)
4(OH)
2+, Fe
2(H
2O)
8(OH)
24+And Fe
2(H
2O)
6(OH)
4 4+Deng.Do to exist in the anodic solution at aluminium sheet: Al (H
2O)
6 3+, Al (H
2O)
5OH
2+, Al (H
2O)
4(OH)
2+, Al (OH)
2+, Al (OH)
2+, Al
2(OH)
2 4+, Al (OH)
4 -, Al
6(OH)
15 3+, Al
7(OH)
17 4+, Al
8(OH)
20 4+, Al
13O
4(OH)
24 7+, Al
13(OH)
34 5+Deng.These metal-containing polymers or complex compound combine with pollutent in the water and form the indissoluble throw out, enter in the mud by precipitation on the one hand and by membrane module its isolation are removed by spoil disposal.
Enumerate several specific embodiments below
Embodiment 1: the intravital sludge concentration in membrane bioreactor pond is about 6g/L, and hydraulic detention time is under the condition of 11h, the three groups of battery lead plates that are arranged in parallel, and the spacing of battery lead plate is 3.0cm, and anode adopts iron plate, applies volts DS, and current density is 40A/m
2, at water inlet total phosphorous 5.0mg/L, when COD concentration is 300mg/L, ammonia nitrogen 50mg/L, the water outlet COD of membrane bioreactor and ammonia-N removal rate are respectively more than 90% and 95%.Electrolysis 24 hours, battery lead plate stop energising, and the water outlet total phosphorous is lower than 0.5mg/L can be kept 5 days, and the flco of generation is discharged with membrane bioreactor discharges sludge.
Embodiment 2: the intravital sludge concentration in membrane bioreactor pond is about 6g/L, and hydraulic detention time is under the condition of 11h, the one group of battery lead plate that is arranged in parallel, and the spacing of battery lead plate is 2.0cm, and anode adopts iron plate, applies volts DS, and current density is 20A/m
2, at water inlet total phosphorous 5.0mg/L, when COD concentration is 300mg/L, ammonia nitrogen 50mg/L, the water outlet COD of membrane bioreactor and ammonia-N removal rate are respectively more than 90% and 95%.Electrolysis 48 hours, battery lead plate stop energising, and the water outlet total phosphorous is lower than 0.5mg/L can be kept 3 days, and the flco of generation is discharged with membrane bioreactor discharges sludge.
Embodiment 3: membrane flux is 9L/ (m in membrane bioreactor
2.h), the sludge concentration in the reactor is about 6g/L, and hydraulic detention time is under the condition of 11h, the two groups of battery lead plates that are arranged in parallel, and the spacing of battery lead plate is 1.0cm, and anode adopts aluminium sheet, applies volts DS, and current density is 80A/m
2, at water inlet total phosphorous 5.0mg/L, when COD concentration is 300mg/L, ammonia nitrogen 50mg/L, the water outlet COD of membrane bioreactor and ammonia-N removal rate are respectively more than 90% and 95%.Electrolysis 24 hours, battery lead plate stop energising, and the water outlet total phosphorous is lower than 0.5mg/L can be kept 7 days, and the flco of generation is discharged with membrane bioreactor discharges sludge.
Claims (3)
1. an electric flocculation membrane bioreactor is removed phosphor in sewage and organic device, this device comprises intake pump (1), by up-flow district (6) with fall the membrane bioreactor pond body (9) that stream district (7) constitutes, be arranged on membrane module (5) and aerating system (4) in the up-flow district, it is characterized in that: at least one group of battery lead plate (3) is arranged in parallel in the body of described membrane bioreactor pond, the battery lead plate spacing is 1～3cm, and battery lead plate is connected with current regulator power supply; Described battery lead plate anode adopts iron plate or aluminium sheet.
2. an electric flocculation membrane bioreactor is removed phosphor in sewage and organic method, it is characterized in that this method comprises the steps:
1) at least one group of battery lead plate that in the body of membrane bioreactor pond, be arranged in parallel, the battery lead plate spacing is 1～3cm, and described battery lead plate anode adopts iron plate or aluminium sheet, and negative electrode is a noble electrode;
2) sewage enters in the body of membrane bioreactor pond, applies voltage of direct-flow voltage regulation on battery lead plate, and current density is 20～80A/m
2
3) sewage is through microbiological deterioration in membrane bioreactor, and metal ion that electrolysis simultaneously produces and the phosphate radical in the sewage react, and generates floss, aspirates water outlet by going out water pump after membrane module filters;
4) phosphorous flco mixed solution in membrane bioreactor of electricity flocculation generation is discharged when spoil disposal.
3. electric flocculation membrane bioreactor according to claim 2 is removed phosphor in sewage and organic method, and it is characterized in that: the spacing of battery lead plate is 2.0～3.0cm; Current density is 20～40A/m
2
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|---|---|---|---|
| CN2008101043969A CN101269863B (en) | 2008-04-18 | 2008-04-18 | Apparatus and method for removing phosphor and organic matter in sewage water with electric flocculation membrane bioreactor |
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|---|---|---|---|
| CN2008101043969A CN101269863B (en) | 2008-04-18 | 2008-04-18 | Apparatus and method for removing phosphor and organic matter in sewage water with electric flocculation membrane bioreactor |
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| CN101269863B CN101269863B (en) | 2010-09-08 |
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|---|---|---|---|---|
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| CN101941759A (en) * | 2010-08-16 | 2011-01-12 | 大连理工大学 | Method for improving pollution resistance and flux of membrane by using weak electric field |
| CN102101709A (en) * | 2010-11-26 | 2011-06-22 | 方明环保科技(漳州)有限公司 | Electrocoagulation device and method for sewage treatment |
| CN101560040B (en) * | 2009-05-08 | 2011-07-13 | 北京清大国华环保科技有限公司 | Method and device for processing pharmaceutical wastewater by pulse electrocoagulation-MBR |
| CN102633360A (en) * | 2012-04-24 | 2012-08-15 | 哈尔滨工业大学 | MBR (membrane biochemical reactor) integrated device for alleviating membrane pollution by utilizing microorganism electrogenesis |
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| CN102976482A (en) * | 2012-12-24 | 2013-03-20 | 东北大学 | Polymembrane bioreactor by in situ electrocoagulation and method for treating wastewater |
| CN103539323A (en) * | 2013-11-13 | 2014-01-29 | 东台市东方船舶装配有限公司 | Electric flocculation membrane bioreactor |
| CN104261603A (en) * | 2014-10-25 | 2015-01-07 | 哈尔滨工业大学 | Electrocoagulation-electroflotation/immersion type ultra-filtration integrated drinking water deep treatment device |
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