CN103739064B - The application of a kind of aerobic activated sludge in treatment of dyeing wastewater process - Google Patents
The application of a kind of aerobic activated sludge in treatment of dyeing wastewater process Download PDFInfo
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- CN103739064B CN103739064B CN201310724150.2A CN201310724150A CN103739064B CN 103739064 B CN103739064 B CN 103739064B CN 201310724150 A CN201310724150 A CN 201310724150A CN 103739064 B CN103739064 B CN 103739064B
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- 239000002351 wastewater Substances 0.000 title claims abstract description 57
- 239000010802 sludge Substances 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000004043 dyeing Methods 0.000 title claims abstract description 36
- 230000008569 process Effects 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 10
- 238000004458 analytical method Methods 0.000 claims abstract description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 27
- 238000005273 aeration Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 8
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 8
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 6
- 238000004062 sedimentation Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000003750 conditioning effect Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 28
- 230000015271 coagulation Effects 0.000 abstract description 7
- 238000005345 coagulation Methods 0.000 abstract description 7
- 230000000050 nutritive effect Effects 0.000 abstract description 6
- 238000007639 printing Methods 0.000 abstract description 6
- 238000001914 filtration Methods 0.000 abstract description 4
- 238000011081 inoculation Methods 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 4
- 239000013043 chemical agent Substances 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 235000015097 nutrients Nutrition 0.000 description 3
- 239000001117 sulphuric acid Substances 0.000 description 3
- 235000011149 sulphuric acid Nutrition 0.000 description 3
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 235000003891 ferrous sulphate Nutrition 0.000 description 2
- 239000011790 ferrous sulphate Substances 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 239000008103 glucose Substances 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 2
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000020477 pH reduction Effects 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- 238000002306 biochemical method Methods 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000036541 health Effects 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
- 239000012535 impurity Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- FWFGVMYFCODZRD-UHFFFAOYSA-N oxidanium;hydrogen sulfate Chemical compound O.OS(O)(=O)=O FWFGVMYFCODZRD-UHFFFAOYSA-N 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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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- Activated Sludge Processes (AREA)
Abstract
The invention belongs to field of waste water treatment, disclose acclimation method and the application of the novel aerobic activated sludge of the former water of a kind for the treatment of of dyeing and printing.Describedly be applied as waste water treatment process, comprise the following steps: (1) carries out biodegradability analysis to dyeing waste water, adopt group component in ultraviolet all-wave scanning technique analyzing and testing waste water; (2) dyeing waste water is introduced equalizing tank, and regulate the pH value of equalizing tank water outlet; (3) waste water after adjust ph is introduced Aerobic Pond, use novel aerobic activated sludge to carry out aerobic treatment to waste water; (4) advanced treatment pond is introduced in the water outlet of Aerobic Pond, finally by water quality up to standard discharge or reuse.Present invention reduces technical process, reduce more than the 50% chemical sludge amount caused by coagulation pretreatment and process cost of disposal, alleviate the pressure of follow-up specific resistance to filtration.What the simultaneously use of novel aerobic activated sludge decreased active sludge nutritive substance adds cost, saves a large amount of inoculation domestication time.
Description
Technical field
The invention belongs to field of waste water treatment, be specifically related to acclimation method and the application of the aerobic activated sludge of the former water of a kind for the treatment of of dyeing and printing.
Background technology
Dyeing waste water is processing cotton, fiber crops, man-made fiber and blending product thereof is the waste water that main printing and dyeing mill discharges.The dyeing waste water water yield is comparatively large, and every dyeing and printing process 1 ton of textiles water consumption 100 ~ 200 tons, wherein 80 ~ 90% become waste water.Textile printing and dyeing wastewater has the features such as the water yield is large, organic pollutant content is high, alkalescence is large, change of water quality is large, belong to one of unmanageable trade effluent, containing dyestuff, slurry, auxiliary agent, finish, soda acid, fiber impurity, sand class material, inorganic salt etc. in waste water, direct discharge brings high risks to human health and living environment, causes the waste of water resources simultaneously.
Current China printing-dyeing waste water treatment process mainly adopts chemical coagulation pre-treatment-acidication-aerobic-advanced treatment.Traditional theory thinks that the raw water quality complicated component of dyeing waste water, toxicity are larger, can not be directly used by the microbe, therefore chemical precipitation agent or coagulation physico-chemical pretreatment and anaerobic hydrolysis-acidification process must be added, poisonous and harmful macromolecular substance sedimentation in waste water and biological degradation are removed, to adapt to the microorganism withstand requirements of follow-up aerobic biochemical section.But owing to having added a large amount of chemical agents in technique, not only cause the problem that technical process is long, chemical drugs dosage large, chemical agent cost is high, chemical sludge yield is larger, and increase due to salt content in water, the practical problems such as cause limited, a large amount of dead mud of the processing power of follow-up aerobic biochemical section floating.
Summary of the invention
In order to overcome the shortcoming of prior art with not enough, the object of the present invention is to provide a kind of aerobic activated sludge and acclimation method thereof;
Another object of the present invention is to the application that above-mentioned aerobic activated sludge is provided, this application alleviates water quality on the one hand to the inhibitory effect of aerobic activated sludge, alleviates in prior art the problem that chemical agent dosage is comparatively large, chemical agent cost is higher, chemical sludge sludge output is comparatively large, anaerobic hydrolysis-acidification processing power is limited, specific resistance to filtration pressure is larger on the other hand.
Object of the present invention is achieved through the following technical solutions:
An acclimation method for aerobic activated sludge, comprises the following steps:
A () gets urban wastewater treatment firm second pond mud, after aeration, conditioning of mud concentration is 10000mg/L, gets mud and pours in sbr reactor device, have aeration plate device in reactor;
B () is learnt from else's experience the former water of waste water after grid, sulfuric acid is adopted to regulate the pH value of the former water of waste water, pour in step (a) and be equipped with in the sbr reactor device of mud, open aerating apparatus and carry out aeration, mixing, now sludge concentration is 5000mg/L, hydraulic detention time controls at 16h, muddy water sedimentation time 1h after stopping aeration, water outlet can enter next cell process section;
C (), by one week of step (b) continuous service, when reaction system mud is tawny, sludge concentration is 4000-4600mg/L, and namely aerobic activated sludge has been tamed.In addition, when hydraulic detention time increases, the glucose adding minute quantity is provided with mud as nutrient raw material.
Aeration time described in step (a) is 3 days; Sludge quantity of getting is 5L.
The former water COD of the waste water after grid described in step (b)
cr600-1000mg/L, ammonia nitrogen 6-12mg/L, BOD
5200-400mg/L.
The consumption of the former water of the waste water after grid described in step (b) is 5L, water temperature 35-40 DEG C, is 5.8-6.3 by sulfuric acid adjust ph.
Water outlet dissolved oxygen concentration described in step (b) is 7-9mg/L.
Described aerobic activated sludge is applied in treatment of dyeing wastewater process, comprises the following steps:
(1) adopt ultraviolet all-wave scanning technique to detect and analyze group component in dyeing waste water water, biodegradability analysis is carried out to dyeing waste water;
(2) dyeing waste water is introduced equalizing tank, and adopt the pH value of sulfuric acid regulating and controlling pond water outlet;
(3) waste water after adjust ph is introduced in Aerobic Pond, use aerobic activated sludge to carry out aerobic treatment to waste water;
(4) advanced treatment pond is introduced in the water outlet of Aerobic Pond, subsequent disposal is carried out to waste water, finally by water quality up to standard discharge or reuse.
Described dyeing waste water pH value 9.0-9.9, SS312mg/L, colourity 600, COD
cr600-1000mg/L, ammonia nitrogen 6-12mg/L, BOD
5200-400mg/L.
The water outlet pH value of described equalizing tank adopts sulfuric acid to control, and pH value is 5.8-6.3.
The condition of described aerobic treatment is water temperature 35-40 DEG C, pH5.8-6.3, and hydraulic detention time is 16h.
The technology of the present invention and conventional art are distinguished and advantage:
(1) conventional art seed sludge adopts the nutritive substance such as starch, flour to mix with waste water, and go to tame aerobic activated sludge, acclimation period is generally 2-6 week.The technology of the present invention does not adopt the nutritive substance of starch, flours to be that mud supplies nutrients, only the former water of waste water is as nutritive substance, acclimation period was about for 1 week usually, and what decrease nutritive substance on the one hand adds cost, saved a large amount of inoculation domestication time on the other hand.
(2) conventional art needs former for dyeing waste water water to be introduced into dosing pond, add the chemical coagulator such as ferrous sulfate, sodium hydroxide, after SS, the COD in pre-treatment reduction water quality and colourity, enter preliminary sedimentation tank adding PAM medicament, particulate matter in water and suspended substance sedimentation are got off, water outlet enters anaerobic hydrolysis acidification tank, easy degradation of small molecular organism is degraded to difficult degradation larger molecular organics in water quality, anaerobic hydrolysis-acidification water outlet is entering aerobic activated sludge reaction tank, removes the BOD in water further
5, COD
cr, colourity, SS etc.; The water outlet of aerobic activated sludge reaction tank is discharged or reuse after advanced treatment.The technology of the present invention, only by former water sulfuric acid adjust ph, to reach within the scope of the pH of aerobic activated sludge microorganism adaptation, can directly enter acidication reaction system, to BOD in water quality
5, COD
cr, colourity, SS etc. carry out aerobic treatment.This invention technology can save the chemical coagulation dosing of 100% on the one hand, and the sulphuric acid cost added, compared with original chemical coagulation reagent cost, can save the adding of agent cost of 50%; On the other hand, owing to not adding chemical coagulation medicament, no longer exist chemical sludge yield, drastically reduce the area the running cost of specific resistance to filtration, alleviate the pressure of follow-up specific resistance to filtration.
(3) conventional art adopts the COD of water quality usually
crsize, B/C size qualitatively judge this water quality and whether are applicable to biochemical treatment.The technology of the present invention adopts ultraviolet all-wave Scanning Detction to analyze the group component contained in dyeing waste water, and combines with the composition such as former glassware for drinking water body dyestuff, auxiliary agent, qualitatively judges the feasibility that this water quality adopts the aerobic activated sludge treatment technology in the present invention.The technology of the present invention more accurately can judge that water quality is applicable to the feasibility of aerobic activated sludge process on the one hand, on the other hand owing to no longer detecting water quality BOD
5, this technology also has feature quickly and easily.
Accompanying drawing explanation
Fig. 1 is the process flow sheet of printing-dyeing waste water treatment process of the present invention (the technology of the present invention) and prior art (original conventional art);
Fig. 2 is certain printing and dyeing enterprise printing-dyeing waste water treatment process schema.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
Certain enterprise's dyeing waste water raw water quality parameters: pH9.0-9.9, SS312mg/L, colourity 600, COD
cr600-1000mg/L, ammonia nitrogen 6-12mg/L, BOD
5200-400mg/L.
The treatment process that present stage adopts is traditional technique: physico-chemical pretreatment-acidication-aerobic aeration-advanced treatment.This enterprise adopts traditional method of wastewater treatment, idiographic flow as shown in Figure 2:
Ferrous sulfate, sodium hydroxide lye, PAM medicament is added, most particulate matter and suspended substance in main removal dyeing waste water, the colourity of water quality, SS, COD in pretreatment stage
crclearance reaches 70%, 70%, more than 40% respectively.Water after pre-treatment precipitation enters acidication conversion zone, the macromole in further degradation water, hardly degraded organic substance, is converted into the organism of small molecules, easily degraded, reduces COD further
cr, improve B/C ratio, and utilize partial organic substances as nutritive substance, synthesized micro-organism own cells material, carries out microbial growth and replacement, and this section of water outlet color is become deeply blackish green from water white transparency, and colourity and SS increase significantly, COD
crclearance is between 10-20%.Water outlet after anaerobic hydrolysis acidification tank process enters Aerobic Pond, removes the BOD in water further
5, COD
cr, ammonia nitrogen and colourity, the look BOD of this section of water quality
5, COD
cr, ammonia nitrogen and chroma removal rate be about 70%, 36%, 80% and 70% respectively.
Dyeing waste water water outlet technical parameter through traditional technology process is as shown in table 1.
The present invention is by the domestication of active sludge, and adopt the technical finesse dyeing waste water of novel aerobic biochemical method, its process flow sheet as shown in Figure 1; Technical process of the present invention:
(1) domestication of aerobic activated sludge: get urban wastewater treatment firm second pond mud, after aeration purification in three days, conditioning of mud concentration is about 10000mg/L, gets 5L mud and pours in 10L reactor; Get the former water of the waste water of 5L after grid, water temperature 35-40 DEG C, by sulfuric acid adjust ph in the scope of 5.8-6.3, pour in 10L reactor, adopting agitator to stir makes muddy water fully mix (now sludge concentration is about 5000mg/L), hydraulic detention time controls after being about 16h, water outlet can enter next cell process section.In this one week of operation continuous service, when reaction system mud is tawny, namely aerobic activated sludge has been tamed, and now sludge concentration is about 4000-4600mg/L.In addition, if when causing hydraulic detention time to increase due to a variety of causes, the glucose that can add minute quantity is provided with mud as nutrient raw material.
(2) by former for waste water water through equalizing tank, equalizing tank water outlet subsequently adopts the pH value of sulfuric acid regulating water quality, makes it to control in the scope of 5.8-6.3; For making water quality pH adjust evenly, flash mixer can be installed.Water quality, after regulating pH, enters aerobic activated sludge biochemical reaction system.The control condition of this reaction system is: water temperature 35-40 DEG C, pH5.8-6.3, after hydraulic detention time is about 16h.Traditional technology is adopted to carry out subsequent disposal, the water quality of last emission compliance or reuse subsequently.
Dyeing waste water water outlet technical parameter through present invention process process is as shown in table 1, and the correlation parameter of acclimation sludge is as shown in table 2.
The each parameter comparison table of table 1
The each parameter comparison table of table 2 mud
With official's data presentation of this enterprise, waste water day output is about 21000 tons, and as adopted existing conventional processes, then coagulated agent adds cost by about 33,600 yuan/day, and within 1 year, (calculating by 365 days) cost is about 12,264,000 yuan; As adopted anaerobic hydrolysis-acidification technology of the present invention, only need a small amount of acid solution to regulate waste water potential of hydrogen, estimate according to sulfuric acid dosage needed for current development, sulfuric acid dosage is about 400ml/ ton water, current industrial vitriol oil market price is about 630 yuan/ton, then needed for day process 24,000 ton of waste water, sulphuric acid cost is about 6048 yuan, and the sulphuric acid cost of a year is about 2,207,520 yuan, compared with traditional coagulation pretreatment technology, can be the adding of agent cost that enterprise saves more than 50%.Secondly, in traditional treatment of dyeing wastewater, pretreatment section will produce a large amount of chemical sludges, the chemical sludge amount produced in this enterprise's treatment of dyeing wastewater process is about 20kg/ ton water, and chemical sludge treatment agent cost is about 25 yuan/ton of mud at present, then the cost of day process chemical sludge is about 12,000 yuan, the chemical sludge processing cost of 1 year is about 4,380,000 yuan.As adopted the anaerobic hydrolysis-acidification technology as this project, the processing cost of this part chemical sludge can be saved completely, in addition, due to the feature that anaerobic sludge output is lower, not only alleviate consequent activities sludge treatment cost, and utilize the advantage that active sludge organic content is high, recycle and combustion power generation, bring good economic benefit by for enterprise.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from spirit of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (3)
1. the application of aerobic activated sludge in treatment of dyeing wastewater process, is characterized in that: comprise the following steps:
(1) adopt ultraviolet all-wave scanning technique to detect and analyze group component in dyeing waste water water, biodegradability analysis is carried out to dyeing waste water;
(2) dyeing waste water is introduced equalizing tank, and adopt the pH value of sulfuric acid regulating and controlling pond water outlet;
(3) waste water after adjust ph is introduced in Aerobic Pond, use aerobic activated sludge to carry out aerobic treatment to waste water;
(4) advanced treatment pond is introduced in the water outlet of Aerobic Pond, subsequent disposal is carried out to waste water, finally by water quality up to standard discharge or reuse;
The water outlet pH value of described equalizing tank adopts sulfuric acid to control, and pH value is 5.8-6.3; The condition of described aerobic treatment is water temperature 35-40 DEG C, pH5.8-6.3, and hydraulic detention time is 16h;
The acclimation method of aerobic activated sludge described in step (3), comprises the following steps:
A () gets urban wastewater treatment firm second pond mud, after aeration, conditioning of mud concentration is 10000mg/L, gets mud and pours in sbr reactor device, have aeration plate device in reactor;
B () is learnt from else's experience the former water of waste water after grid, sulfuric acid is adopted to regulate the pH value of the former water of waste water, pour in step (a) and be equipped with in the sbr reactor device of mud, open aeration plate device and carry out aeration, mixing, now sludge concentration is 5000mg/L, hydraulic detention time controls at 16h, muddy water sedimentation time 1h after stopping aeration, and namely water outlet enters next cell process section; The former water CODcr600-1000mg/L of the described waste water after grid, ammonia nitrogen 6-12mg/L, BOD
5200-400mg/L; Described water outlet dissolved oxygen concentration is 7-9mg/L; The former water water temperature 35-40 DEG C of waste water described in step (b) is 5.8-6.3 by sulfuric acid adjust ph;
C (), by one week of step (b) continuous service, when reaction system mud is tawny, sludge concentration is 4000-4600mg/L, and namely aerobic activated sludge has been tamed.
2. the application of aerobic activated sludge in treatment of dyeing wastewater process according to claim 1, is characterized in that: the aeration time described in step (a) is 3 days; Sludge quantity of getting is 5L.
3. the application of aerobic activated sludge in treatment of dyeing wastewater process according to claim 1, is characterized in that: the consumption of the former water of the waste water described in step (b) is 5L.
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