CN102249486B - Electrochemical-biological method combination device for treating printing and dyeing wastewater and wastewater treating method - Google Patents
Electrochemical-biological method combination device for treating printing and dyeing wastewater and wastewater treating method Download PDFInfo
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- CN102249486B CN102249486B CN 201110136598 CN201110136598A CN102249486B CN 102249486 B CN102249486 B CN 102249486B CN 201110136598 CN201110136598 CN 201110136598 CN 201110136598 A CN201110136598 A CN 201110136598A CN 102249486 B CN102249486 B CN 102249486B
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Abstract
The invention discloses an electrochemical-biological method combination device for treating printing and dyeing wastewater. The device comprises an electrochemical treatment device and an active carbon anaerobic biological treatment unit which are connected with each other, wherein the water outlet end of the active carbon anaerobic biological treatment unit is connected with an aerobic biological treatment unit and an iron carbon micro treatment unit respectively; the water outlet end of the iron carbon micro treatment unit is connected with the input end of the active carbon anaerobic biological treatment unit; the sludge output end of the aerobic biological treatment unit is connected with the input ends of a sludge concentration tank and the active carbon anaerobic biological treatment unit; and the water outlet end of the aerobic biological treatment unit is connected with the input end of the active carbon anaerobic biological treatment unit. Due to the adoption of the method for treating wastewater with the device, electrochemical treatment, active carbon anaerobic biological treatment and iron carbon micro treatment are performed in sequence, so that the COD (Chemical Oxygen Demand) removing rate of the wastewater is high, and a good decoloring effect is achieved.
Description
Technical field
The invention belongs to technical field of sewage, relate to a kind of electrochemical-biological combined apparatus for the treatment of of dyeing and printing, the invention still further relates to the method for utilizing said apparatus to process waste water.
Background technology
Dyeing waste water is one of present China major industry waste water, and according to statistics, China's dyeing waste water day quantity discharged is up to 4,000,000 tons.Dyeing waste water not only quantity discharged is large, and the organic contamination substrate concentration is high, colourity is dark, alkalescence is large, complicated component is changeable, belongs to unmanageable trade effluent.Dyeing waste water is one of the difficult point of the major polluting sources of current China water system environment and Industrial Wastewater Treatment and focus.
In recent years, the researchist uses the technology such as chemistry, aerobic or anaerobism, combination and parameter optimization by the different process unit, the traditional dyeing and finishing waste water treatment process is improved, make some progress, greatly improved the traditional technology centering lower concentration dyeing waste water (treatment effect of COD＜1500mg/L).But along with a large amount of uses of the bio-refractory such as new dye and dyeing auxiliary material in the dyeing, more than 2000mg/L, waste water complicated component and variation are rapid substantially for current dyeing waste water COD concentration, and BOD concentration does not almost increase.For the processing of this class high-concentration printing and dyeing wastewater, original biological treatment system is difficult to meet the demands, and the COD clearance of traditional chemical precipitation method and By Bubble-floating Method and percent of decolourization are also very limited.
Summary of the invention
The purpose of this invention is to provide a kind of electrochemical-biological combined apparatus for the treatment of of dyeing and printing and the method that adopts this device to carry out wastewater treatment, solve not high, the decolouring hard problem of the COD clearance that exists when existing biosystem is processed high-concentration printing and dyeing wastewater.
The technical solution adopted in the present invention is, the electrochemical-biological combined apparatus for the treatment of of dyeing and printing, comprise the electrochemical treatment unit and the gac anaerobic biological treatment unit that are connected, the water outlet end of gac anaerobic biological treatment unit is connected with respectively aerobe processing unit and iron carbon microprocessing unit, the water outlet end of iron carbon microprocessing unit is connected with the input terminus of gac anaerobic biological treatment unit, the mud output terminal of aerobe processing unit respectively with sludge thickener, the input terminus of gac anaerobic biological treatment unit is connected, and the water outlet end of aerobe processing unit is connected with the input terminus of gac anaerobic biological treatment unit.
Electrochemical treatment unit wherein, comprise casing, being provided with lead in the casing is oxide anode and irony net negative electrode, the top outer of casing is provided with the electrochemical cell water-in, the bottom outside of casing is provided with the electrochemical cell water outlet, lead is oxide anode take titanium base or iron-based as carrier, draping over one's shoulders lead outward is that oxide compound forms, lead is that oxide compound is selected a kind of in plumbic oxide, tri-lead tetroxide or the tindioxide, irony net negative electrode is tubular, irony net negative electrode is periphery, and lead is that oxide anode is the center of circle.
Gac anaerobic biological treatment unit wherein; comprise that outside surface is provided with the anaerobic biological reactor of anaerobic biological reactor thermal insulation layer; top one side of anaerobic biological reactor is provided with the anaerobic reactor water outlet; anaerobic biological reactor top opposite side is provided with granulated active carbon loading and unloading and porthole; anaerobe bio-reactor bottom is provided with gac anaerobic reation pool water-in; the anaerobic biological reactor bottom is provided with powdered carbon and adds and porthole; the bottom is filled with activated carbon granule mud in the anaerobic biological reactor; the anaerobic biological reactor internal upper part is filled with granulated active carbon and is provided with vapor riser, and the vapor riser bottom is connected with triphase separator.
Iron carbon microprocessing unit wherein, comprise the little treating pond of iron carbon, be provided with iron carbon filtrate in the little treating pond of iron carbon, the top of the little treating pond of iron carbon and bottom are respectively arranged with the little treating pond water-in of iron carbon and the little treating pond water outlet of iron carbon, top one side of the little treating pond of iron carbon is provided with dress iron carbon filtrate mouth, and bottom one side of the little treating pond of iron carbon is provided with unloads iron carbon filtrate and porthole.
Another technical scheme of the present invention is, adopts the method for electrochemical-biological combined apparatus treatment of dyeing and printing, specifically implements according to following steps:
Step 1: pending high-concentration printing and dyeing wastewater is input to the electrochemical treatment unit carries out electrochemical treatment;
Step 2: when the water yield after the electrochemical treatment that step 1 obtains can satisfy the design hydraulic load of anaerobic biological treatment unit, the waste water that step 1 is obtained was input to gac anaerobic biological treatment unit and carries out the gac anaerobic biological treatment; When the waste water water yield that step 1 obtains can't satisfy the design hydraulic load of anaerobic biological treatment unit or when the waste water quality after the anaerobic biological treatment cell processing does not reach design requirements, the part waste water after the gac anaerobic biological treatment cell processing is transported to iron carbon microprocessing unit; Iron carbon microprocessing unit carries out the little processing of iron carbon to waste water, and the wastewater effluent after the little processing of iron carbon is back to gac anaerobic biological treatment unit front end;
Step 3: when the waste water quality after the anaerobic biological treatment that step 2 obtains reaches design requirements, waste water is transported to the aerobe processing unit; The aerobe processing unit carries out aerobe to waste water to be processed, and reaches water outlet after the effluent quality standard of design; When the waste water quality after aerobic biological processing unit is processed does not reach the effluent quality standard of design, start the SBR water part and be back to gac anaerobic biological treatment unit front end.
Characteristics of the present invention also are,
Electrochemical treatment in the step 1 wherein, it is 2.5A/cm that current density is set
2-4.2A/cm
2, hydraulic detention time is 0.1-3h.
Gac anaerobic biological treatment in the step 2 wherein, it is 5-16h that hydraulic detention time is set, and temperature of reaction is 30-55 ℃, and water inlet pH value is 6.5-8.5.
The little processing of iron carbon in the step 2 wherein, it is 10-30min that hydraulic detention time is set.
The invention has the beneficial effects as follows that sludge output is few, capacity of resisting impact load is strong, and impact load comprises the variation of COD concentration, pH value and colourity here, comprises that also the water yield changes; In the very large situation of flooding quantity deficiency and variation water quality, can keep Sewage treatment systems runs well, and removing part salinity and ammonia nitrogen, water outlet COD, pH value, colourity all reach " textile dyeing and finishing industrial water pollution emission standard " (GB4287-92) first discharge standard.Electrochemical cell, the little treating pond volume of iron carbon are little, and be short at electrochemical cell, the little treating pond retention time of sewage of iron carbon, whole strong shock resistance.
Description of drawings
Fig. 1 is the schematic flow sheet of the electrochemical-biological combined apparatus for the treatment of of dyeing and printing of the present invention;
Fig. 2 is the structural representation of electrochemical treatment unit in the electrochemical-biological combined apparatus for the treatment of of dyeing and printing of the present invention;
Fig. 3 is the structural representation of gac anaerobic biological treatment unit in the electrochemical-biological combined apparatus for the treatment of of dyeing and printing of the present invention;
The structural representation of iron carbon microprocessing unit in the electrochemical-biological combined apparatus of Fig. 4 treatment of dyeing and printing of the present invention.
Among the figure, 1. electrochemical treatment unit, 2. gac anaerobic biological treatment unit; 3. aerobe processing unit, 4. iron carbon microprocessing unit, 5. sludge thickener; 6. irony net negative electrode; 7. lead is oxide anode, 8. electrochemical cell water-in, 9. electrochemical cell water outlet; 10. casing; 11. gac anaerobic biological reactor water-in, 12. powdered carbon granule sludges, the loading and unloading of 13. granulated active carbons and porthole; 14. anaerobic biological reactor thermal insulation layer; 15. vapor riser, 16. anaerobic biological reactor water outlets, 17. triphase separators; 18. granulated active carbon; 19. powdered carbon adds and porthole, the little treating pond water-in of 20. iron carbon, 21. dress iron carbon filtrate mouths; 22. iron carbon filtrate; 23. unload iron carbon filtrate and porthole, the little treating pond water outlet of 24. iron carbon, the little treating pond of 25. iron carbon.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
The structure of the electrochemical-biological combined apparatus for the treatment of of dyeing and printing of the present invention, as shown in Figure 1, comprise the electrochemical treatment unit 1 and the gac anaerobic biological treatment unit 2(ACUAS reaction tank that are connected), the water outlet end of gac anaerobic biological treatment unit 2 connects respectively aerobic biological processing unit 3(SBR reaction tank) and iron carbon microprocessing unit 4, the water outlet end of iron carbon microprocessing unit 4 is connected with the input terminus of gac anaerobic biological treatment unit 2, the mud output terminal of aerobe processing unit 3 and sludge thickener 5, the input terminus of gac anaerobic biological treatment unit 2 is connected, and the water outlet end of aerobe processing unit 3 is connected with the input terminus of gac anaerobic biological treatment unit 2.
The structure of electrochemical treatment unit 1 wherein, as shown in Figure 2, comprise casing 10, being provided with lead in the casing 10 is oxide anode 7 and irony net negative electrode 6, and the top outer of casing 10 is provided with electrochemical cell water-in 8, and the bottom outside of casing 10 is provided with electrochemical cell water outlet 9, this structural maintenance is convenient, easy to use, can not produce sludgd deposition, anode bar is to be carrier by titanium base or iron-based, and draping over one's shoulders lead outward is oxide compound, can be that the oxide electrode rod forms by one or more lead.Lead is that oxide compound is selected a kind of in plumbic oxide, tri-lead tetroxide or the tindioxide.The rounded cylindrical thing that negative electrode forms for circle shape irony net, the electrode group is circular, negative electrode is periphery, can try one's best near the inwall of electrochemical treatment unit box 10, anode be the center of circle or take anode extremely rod group as the center of circle, dyeing waste water enters the electrochemical treatment unit by electrochemical cell water-in 8, process through electrolytic oxidation, flow out electrochemical treatment unit 1 by electrochemical cell water outlet 9,1 interior dyeing waste water is subject to electrochemical action in the electrochemical treatment unit, guaranteed the treatment effect of waste water, this reaction tank can effectively destroy the chromophoric group of dyeing waste water, and part macromole is wherein carried out oxygenizement.
Gac anaerobic biological treatment unit 2(ACUAS reactor wherein) structure; as shown in Figure 3; comprise that outside surface is provided with the anaerobic biological reactor of anaerobic biological reactor thermal insulation layer 14; the bottom is filled with powdered activated carbon granule mud 12 in the anaerobic biological reactor; the first half is filled with granulated active carbon 18; the vapor riser 15 that arranges is such as Fig. 3 setting; vapor riser 15 lower ends are connected with triphase separator 17; be provided with as shown in Figure 3 granulated active carbon loading and unloading and porthole 13 in anaerobic biological reactor top one side; being provided with as shown in Figure 3 powdered carbon in anaerobic biological reactor bottom one side adds and porthole 19; anaerobic biological reactor top one side is provided with anaerobic biological reactor water outlet 16, and the anaerobic biological reactor bottom is provided with gac anaerobic biological reactor water-in 11.
The anaerobic biological reactor of gac anaerobic biological treatment unit 2 is comprised of two portions: its underpart is that flow lifting type anaerobe Sludge Bed (UASB), top are the anaerobe filter bed take granulated active carbon as carrier, this unit structures housing drapes over one's shoulders thermal insulation layer outward, ACUAS reactor lower part granule sludge is take powdered carbon as nucleation centre, the granule sludge quality deterioration of having avoided the long-time running of dyeing waste water anaerobic system to cause is such as problems such as sludge crushing, loss and activity decreaseds; Top is the anaerobe filter bed take granulated active carbon as carrier; waste water is being carried out when advanced treatment further reduces COD, colourity; its granulated active carbon can be processed by its surperficial biological filter membrane the ammonia nitrogen in the waste water, reduces the content of ammonia nitrogen in the waste water.Waste water evenly enters the UASB reactive system by the bottom inlet distribution device that gac anaerobic biological reactor water-in 11 enters gac anaerobic biological treatment unit, rise and enter the gac bacteria bed, the waste water of handling flows out the ACUAS reactor by anaerobic reactor water outlet 16, and the waste water after the partially disposed can be back to this unit front end distribution reservoir as required.There is mud reuse pipeline to lead to by gac anaerobic biological reactor water-in 11 and UASB reactive system bottom, can be according to the running condition backflow part SBR mud of the treatment system mud with supplementary AC UAS reactive system, thus the sludge output of whole system effectively reduced.
Wherein the structure of iron carbon microprocessing unit 4 as shown in Figure 4, comprise the little treating pond 25 of iron carbon, be provided with iron carbon filtrate 22 in the little treating pond 25 of iron carbon, the top of the little treating pond 25 of iron carbon and bottom are respectively arranged with the little treating pond water-in 20 of iron carbon and the little treating pond water outlet 24 of iron carbon, top one side of the little treating pond 25 of iron carbon is provided with dress iron carbon filtrate mouth 21, and bottom one side of the little treating pond 25 of iron carbon is provided with unloads iron carbon filtrate and porthole 23.
Part gac anaerobic biological treatment unit 4 is processed waste water and is entered the little treating pond 25 of iron carbon by the little treating pond water-in 20 of iron carbon, at Galvanic interaction, carry out microelectrolysis process, difficult degradation organic macromolecule contained in the water outlet of ACUAS reaction tank is destroyed, recirculation water is further carried out entering ACUAS reactor front end by little treating pond water outlet 24 outflows of iron carbon after the advanced treatment.
Method of wastewater treatment of the present invention, specifically implement according to following steps:
Step 1: high-concentration printing and dyeing wastewater enters into electrochemical treatment unit 1 and processes, and it is 2.5A/cm that current density is set
2-4.2A/cm
2, hydraulic detention time is 0.1-3h.Through the waste water after the electrochemical treatment, chroma removal rate reaches 40%-85%.Under electric field action, the dyeing waste water chromophoric group is destroyed, and macro-radical is oxidized, and wastewater biodegradability is improved.
Step 2: the waste water after the electrochemical treatment that step 1 is obtained is input to gac anaerobic biological treatment unit 2 and processes, and it is 5-16h that hydraulic detention time is set, and temperature of reaction is 30-55 ℃, and water inlet pH value is 6.5-8.5.Through the waste water after the anaerobic treatment, the COD clearance reaches 50%-65%, and chroma removal rate reaches 70%-90%, and ammonia nitrogen removal frank reaches 40%-60%.When the water yield can't satisfy the design hydraulic load of anaerobic biological treatment after step 1 is processed, waste water after the part anaerobic treatment is back to gac anaerobic biological treatment unit 2 front ends through iron carbon microprocessing unit 4, if it is the 6.5-8.5 scope that recirculation water pH value less than 6.5, then relies on 1 water outlet of electrochemical treatment unit to be adjusted to the pH value.
The pH value has reduced the requirement of dyeing waste water influent alkalinity for 6.5-8.5, and anaerobic technology general requirement pH value is 6.5-7.8; And dyeing waste water mostly is alkaline waste water pH value at 6-11(silk printing and dyeing waste water ph 6-8.5), like this, the sour consumption of dyeing waste water when entering gac anaerobic biological treatment unit 2 front adjusting pH value reduces greatly, in three acid (sulfuric acid, hydrochloric acid, nitric acid), the sulfuric acid price is minimum, so, generally regulate waste water ph with sulfuric acid, but after increasing, can suppress sulfate radical in waste water the anaerobe reaction, simultaneously, heighten reactor water inlet pH value and have the reduction sulfate radical to the effect of anaerobe reaction inhibition.So, heighten reactor water inlet pH value and run well, cut operating costs significant to reactor.
Step 3: when the waste water quality after the anaerobic biological treatment that step 2 obtains reaches design requirements, waste water is transported to aerobe processing unit 3; When the waste water quality after the anaerobic biological treatment that step 2 obtains does not reach design requirements, part waste water is transported to iron carbon microprocessing unit 4; 4 pairs of waste water of iron carbon microprocessing unit carry out the little processing of iron carbon, and the wastewater effluent after the little processing of iron carbon is back to gac anaerobic biological treatment unit 2; 3 pairs of waste water of aerobe processing unit carry out aerobe to be processed, and reaches water outlet after the effluent quality standard that design determines.If final the processing when not reaching the effluent quality standard of design adopts startup SBR water part to be back to gac anaerobic biological treatment unit 2.
Below the present invention will be described from the principle aspect:
(1) electrochemical treatment is as the pretreatment unit of whole treatment system, the electrochemical cell design is: volume is 1/24th of day processing wastewater flow rate, the height with diameter than the right cylinder that is 1.3～10, adopt fast processing mode so that in the dyestuff part macromole organic pollutant oxidized, chromophoric group is effectively destroyed, color degree of dyeing waste water is reduced to 40%-85%, not only the treatment time is short in this unit, energy consumption is low, equipment volume and floor space are little, simultaneously also Effective Raise the biodegradability of this type of dyeing waste water.
(2) waste water through electrochemical pre-treatment enters the anaerobic biological treatment unit.Wherein the ACUAS reactor lower part is the UASB conversion zone, this zone is adding formed granule sludge under the powdered carbon promotion, anti-hydraulic load ability is large, under this type of high density anaerobion effect, the Azo dye of difficult degradation has obtained effective degraded, and the processed waste water biodegradability improves greatly, and most of colourity is effectively removed, process the splendid condition of having created for follow-up aerobe, waste water COD concentration has also obtained effective reduction simultaneously.ACUAS reactor top is the anaerobe filter bed conversion zone take microbial film coatedparticles gac as main body, and this zone has degree of depth decolouring, reduces the function of COD concentration, in addition waste water is had certain removal of ammonia and nitrogen effect.This unit mainly is difficult degradation organic macromolecule in degraded, the absorption dyeing waste water, the biogas that recyclable treating processes of while produces.
(3) water outlet of anaerobic biological treatment unit enters the aerobe processing unit, this moment, inlet COD loading was relatively low, and has a good biodegradability energy, in the sbr reactor pond, waste water is through water inlet, reaction, precipitation, draining, idle 5 reaction times independently, and under the cleaning action of each stage dominant bacteria, the organic pollutants such as reduction and dispersed dye and most of aromatic series obtain removing, the COD concentration of waste water reduces greatly, and effluent quality is good.
(4) ACUAS reactor effluent recycling, the one, keep the i.e. normal operation of anaerobic biological treatment unit when amount of inlet water is not enough of dyeing waste water hydraulic load, outside reducing anaerobic biological treatment unit front end inlet COD concentration and adjusting pH value, reduction distribution reservoir, have certain effect aspect the acid adding consumption simultaneously; The 2nd, for the situation that dyeing waste water water quality in the production process changes suddenly, by backwater mud is tamed.
(5) for the dyeing waste water excessive concentration maybe when adopting ACUAS reactor water part to reflux anaerobic treatment unit flooding quantity still not enough, and the last water outlet of system can start the SBR effluent recycling to gac anaerobic treatment unit front end when not reaching the effluent quality standard of design, one can regulate inlet COD concentration, make waste water ph close to neutrality, reduce the consumption of the outer acid adding of distribution reservoir, avoid high COD concentration to the impact of ACUAS unit, and guarantee the normal operation of ACUAS reactor; The 2nd, by further processing so that the last water outlet of system reaches the effluent quality standard of design.
(6) sbr reactor pond returned sluge can be processed the nuisance that part SBR unit produces, thereby reduces the whole system sludge output, simultaneously supplementary AC UAS reaction tank sludge quantity.
(7) the little treating pond of iron carbon is the advanced treatment to ACUAS reactor reuse water, being designed to volume is 1/24th of day processing wastewater flow rate, the height with diameter than the right cylinder that is 1.3～5, difficult degradation organic macromolecule contained in the water outlet of ACUAS reactor is destroyed, further recirculation water is carried out advanced treatment, enter ACUAS reactor front end by little treating pond water outlet 24 outflows of iron carbon.Thereby regulate ACUAS reactor front end influent quality, improve ACUAS reactor impact resistance.Because fast processing and large length-to-diameter ratio design, the iron carbon consumption of the little treating pond of iron carbon reduces greatly.
Embodiment 1
50T water production rate/d, influent COD 2200 mg/L, SS200 mg/L, pH 9-10.5 is after grid, pump well are processed, at electrochemical cell hydraulic detention time 15min, enter the ACUAS reactor after regulating pH7.5-7.8,20%ACUAS reactor effluent recycling is to the little treating pond of iron carbon, the little treating pond hydraulic detention time of iron carbon 25min, water outlet enters distribution reservoir, the water outlet of ACUAS reactor is through the SBR cell processing, water outlet COD＜45 mg/L, pH 6-8, colourity＜40 times, SS＜25mg/L.
30T water production rate/d, influent COD 3000mg/L, SS190 mg/L, pH 8-10.5, after grid, pump well are processed, at electrochemical cell hydraulic detention time 30min, enter the ACUAS reactor behind the adjusting pH8-8.5,20%ACUAS reactor effluent recycling is to the little treating pond of iron carbon, the little treating pond hydraulic detention time of iron carbon 30min, water outlet enters distribution reservoir, and the water outlet of ACUAS reactor is through the SBR cell processing, and 25%SBR unit effluent recycling is to distribution reservoir, SBR unit water outlet COD＜50 mg/L, pH 6-9, colourity＜50 times, SS＜25mg/L.
30T water production rate/d, influent COD 1000mg/L, SS200 mg/L, pH 9-11 is after grid, pump well are processed, at electrochemical cell hydraulic detention time 6min, enter the ACUAS reactor after regulating pH7-7.5,30%ACUAS reactor effluent recycling is to the little treating pond of iron carbon, the little treating pond hydraulic detention time of iron carbon 10min, water outlet enters distribution reservoir, the water outlet of ACUAS reactor is through the SBR cell processing, SBR unit water outlet COD＜40 mg/L, pH 6-9, colourity＜40 times, SS＜25mg/L.
Claims (8)
1. the electrochemical-biological combined apparatus for the treatment of of dyeing and printing, it is characterized in that, comprise the electrochemical treatment unit (1) and the gac anaerobic biological treatment unit (2) that are connected, the water outlet end of gac anaerobic biological treatment unit (2) is connected with respectively aerobe processing unit (3) and iron carbon microprocessing unit (4), the water outlet end of iron carbon microprocessing unit (4) is connected with the input terminus of gac anaerobic biological treatment unit (2), the mud output terminal of described aerobe processing unit (3) respectively with sludge thickener (5), the input terminus of gac anaerobic biological treatment unit (2) is connected, and the water outlet end of described aerobe processing unit (3) is connected with the input terminus of gac anaerobic biological treatment unit (2).
2. the electrochemical-biological combined apparatus for the treatment of of dyeing and printing according to claim 1, it is characterized in that, described electrochemical treatment unit (1), comprise casing (10), being provided with lead in the casing (10) is oxide anode (7) and irony net negative electrode (6), the top outer of casing (10) is provided with electrochemical cell water-in (8), the bottom outside of casing (10) is provided with electrochemical cell water outlet (9), described lead is oxide anode (7) take titanium base or iron-based as carrier, draping over one's shoulders lead outward is that oxide compound forms, lead is that oxide compound is selected plumbic oxide, a kind of in tri-lead tetroxide or the tindioxide, described irony net negative electrode (6) is tubular, irony net negative electrode (6) is periphery, and lead is that oxide anode (7) is the center of circle.
3. the electrochemical-biological combined apparatus for the treatment of of dyeing and printing according to claim 1; it is characterized in that; described gac anaerobic biological treatment unit (2); comprise that outside surface is provided with the anaerobic biological reactor of anaerobic biological reactor thermal insulation layer (14); top one side of anaerobic biological reactor is provided with anaerobic reactor water outlet (16); anaerobic biological reactor top opposite side is provided with granulated active carbon loading and unloading and porthole (13); the anaerobic biological reactor bottom is provided with gac anaerobic reation pool water-in (11); the anaerobic biological reactor bottom is provided with powdered carbon and adds and porthole (19); the bottom is filled with activated carbon granule mud (12) in the anaerobic biological reactor; the anaerobic biological reactor internal upper part is filled with granulated active carbon (18) and is provided with vapor riser (15), and vapor riser (15) bottom is connected with triphase separator (17).
4. the electrochemical-biological combined apparatus for the treatment of of dyeing and printing according to claim 1, it is characterized in that, described iron carbon microprocessing unit (4), comprise the little treating pond of iron carbon (25), be provided with iron carbon filtrate (22) in the little treating pond of iron carbon (25), the top of the little treating pond of iron carbon (25) and bottom are respectively arranged with the little treating pond water-in of iron carbon (20) and the little treating pond water outlet of iron carbon (24), top one side of the little treating pond of iron carbon (25) is provided with dress iron carbon filtrate mouth (21), and bottom one side of the little treating pond of iron carbon (25) is provided with unloads iron carbon filtrate and porthole (23).
5. adopt the method for electrochemical-biological combined apparatus treatment of dyeing and printing, it is characterized in that, adopt the electrochemical-biological combined apparatus for the treatment of of dyeing and printing, its structure is: comprise the electrochemical treatment unit (1) and the gac anaerobic biological treatment unit (2) that are connected, the water outlet end of gac anaerobic biological treatment unit (2) is connected with respectively aerobe processing unit (3) and iron carbon microprocessing unit (4), the water outlet end of iron carbon microprocessing unit (4) is connected with the input terminus of gac anaerobic biological treatment unit (2), the mud output terminal of described aerobe processing unit (3) respectively with sludge thickener (5), the input terminus of gac anaerobic biological treatment unit (2) is connected, and the water outlet end of described aerobe processing unit (3) is connected with the input terminus of gac anaerobic biological treatment unit (2);
Described electrochemical treatment unit (1), comprise casing (10), being provided with lead in the casing (10) is oxide anode (7) and irony net negative electrode (6), the top outer of casing (10) is provided with electrochemical cell water-in (8), the bottom outside of casing (10) is provided with electrochemical cell water outlet (9), described lead is oxide anode (7) take titanium base or iron-based as carrier, draping over one's shoulders lead outward is that oxide compound forms, lead is that oxide compound is selected plumbic oxide, a kind of in tri-lead tetroxide or the tindioxide, described irony net negative electrode (6) is tubular, irony net negative electrode (6) is periphery, and lead is that oxide anode (7) is the center of circle;
Described gac anaerobic biological treatment unit (2), comprise that outside surface is provided with the anaerobic biological reactor of anaerobic biological reactor thermal insulation layer (14), top one side of anaerobic biological reactor is provided with anaerobic reactor water outlet (16), anaerobic biological reactor top opposite side is provided with granulated active carbon loading and unloading and porthole (13), the anaerobic biological reactor bottom is provided with gac anaerobic reation pool water-in (11), the anaerobic biological reactor bottom is provided with powdered carbon and adds and porthole (19), the bottom is filled with activated carbon granule mud (12) in the anaerobic biological reactor, the anaerobic biological reactor internal upper part is filled with granulated active carbon (18) and is provided with vapor riser (15), and vapor riser (15) bottom is connected with triphase separator (17);
Described iron carbon microprocessing unit (4), comprise the little treating pond of iron carbon (25), be provided with iron carbon filtrate (22) in the little treating pond of iron carbon (25), the top of the little treating pond of iron carbon (25) and bottom are respectively arranged with the little treating pond water-in of iron carbon (20) and the little treating pond water outlet of iron carbon (24), top one side of the little treating pond of iron carbon (25) is provided with dress iron carbon filtrate mouth (21), and bottom one side of the little treating pond of iron carbon (25) is provided with unloads iron carbon filtrate and porthole (23);
Specifically implement according to following steps:
Step 1: pending high-concentration printing and dyeing wastewater is input to electrochemical treatment unit (1) carries out electrochemical treatment;
Step 2: when the water yield after the electrochemical treatment that step 1 obtains can satisfy the design hydraulic load of anaerobic biological treatment unit (2), the waste water that step 1 is obtained was input to gac anaerobic biological treatment unit (2) and carries out the gac anaerobic biological treatment; When the waste water water yield that step 1 obtains can't satisfy the design hydraulic load of anaerobic biological treatment unit (2) or the waste water quality after process anaerobic biological treatment unit (2) and do not reach design requirements, the part waste water after gac anaerobic biological treatment unit (2) processed was transported to iron carbon microprocessing unit (4); Iron carbon microprocessing unit (4) carries out the little processing of iron carbon to waste water, and the wastewater effluent after the little processing of iron carbon is back to gac anaerobic biological treatment unit (2) front end;
Step 3: when the waste water quality after the anaerobic biological treatment that step 2 obtains reaches design requirements, waste water is transported to aerobe processing unit (3); Aerobe processing unit (3) carries out aerobe to waste water to be processed, and reaches water outlet after the effluent quality standard of design; When the waste water quality after aerobic biological processing unit (3) is processed does not reach the effluent quality standard of design, start the SBR water part and be back to gac anaerobic biological treatment unit (2) front end.
6. the method for employing electrochemical-biological combined apparatus treatment of dyeing and printing according to claim 5 is characterized in that, the electrochemical treatment in the described step 1, and it is 2.5A/cm that current density is set
2-4.2A/cm
2, hydraulic detention time is 0.1-3h.
7.
The method of employing electrochemical-biological combined apparatus treatment of dyeing and printing according to claim 5, it is characterized in that, in the described step 2
The gac anaerobic biological treatment, it is 5-16h that hydraulic detention time is set, and temperature of reaction is 30-55 ℃, and water inlet pH value is 6.5-8.5.
8.
The method of employing electrochemical-biological combined apparatus treatment of dyeing and printing according to claim 5, it is characterized in that, in the described step 2
The little processing of iron carbon, it is 10-30min that hydraulic detention time is set.
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| CN 201110136598 CN102249486B (en) | 2011-05-25 | 2011-05-25 | Electrochemical-biological method combination device for treating printing and dyeing wastewater and wastewater treating method |
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| CN 201110136598 CN102249486B (en) | 2011-05-25 | 2011-05-25 | Electrochemical-biological method combination device for treating printing and dyeing wastewater and wastewater treating method |
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| CN102249486A CN102249486A (en) | 2011-11-23 |
| CN102249486B true CN102249486B (en) | 2013-03-06 |
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| CN 201110136598 Expired - Fee Related CN102249486B (en) | 2011-05-25 | 2011-05-25 | Electrochemical-biological method combination device for treating printing and dyeing wastewater and wastewater treating method |
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| CN105923907A (en) * | 2016-05-31 | 2016-09-07 | 北京国电富通科技发展有限责任公司 | Coal chemical industrial wastewater treatment system and treatment process |
| CN106630387A (en) * | 2016-11-17 | 2017-05-10 | 上海晶宇环境工程股份有限公司 | A device of an electrolysis enhanced denitrification biological membrane denitrogenation process |
| CN108083390A (en) * | 2016-11-22 | 2018-05-29 | 山西宝晟源机电设备有限公司 | Efficient micro-electrolysis reactor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101024534A (en) * | 2006-02-21 | 2007-08-29 | 中国科学院生态环境研究中心 | Biological electrochemical combined system for treating dye waste water and method thereof |
| CN101333055A (en) * | 2008-07-29 | 2008-12-31 | 龚先木 | Complete plant for treating and recovering printing light polluted waste liquid |
| CN101343131A (en) * | 2008-06-13 | 2009-01-14 | 嘉兴学院 | Multi-stage combined degradation and recycle method for printing and dyeing wastewater |
| CN101503268A (en) * | 2009-03-11 | 2009-08-12 | 东莞市珠江海咸水淡化研究所 | Zero discharge processing EBM method for dyeing waste water |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101024534A (en) * | 2006-02-21 | 2007-08-29 | 中国科学院生态环境研究中心 | Biological electrochemical combined system for treating dye waste water and method thereof |
| CN101343131A (en) * | 2008-06-13 | 2009-01-14 | 嘉兴学院 | Multi-stage combined degradation and recycle method for printing and dyeing wastewater |
| CN101333055A (en) * | 2008-07-29 | 2008-12-31 | 龚先木 | Complete plant for treating and recovering printing light polluted waste liquid |
| CN101503268A (en) * | 2009-03-11 | 2009-08-12 | 东莞市珠江海咸水淡化研究所 | Zero discharge processing EBM method for dyeing waste water |
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