CN115010270B - Treatment method and treatment system for cotton printing and dyeing wastewater - Google Patents
Treatment method and treatment system for cotton printing and dyeing wastewater Download PDFInfo
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- CN115010270B CN115010270B CN202210675833.2A CN202210675833A CN115010270B CN 115010270 B CN115010270 B CN 115010270B CN 202210675833 A CN202210675833 A CN 202210675833A CN 115010270 B CN115010270 B CN 115010270B
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- 238000004043 dyeing Methods 0.000 title claims abstract description 40
- 239000002351 wastewater Substances 0.000 title claims abstract description 40
- 238000007639 printing Methods 0.000 title claims abstract description 37
- 229920000742 Cotton Polymers 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000000813 microbial effect Effects 0.000 claims abstract description 72
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 62
- 239000010802 sludge Substances 0.000 claims abstract description 32
- 244000005700 microbiome Species 0.000 claims abstract description 25
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims description 68
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 58
- 239000002068 microbial inoculum Substances 0.000 claims description 27
- 239000010865 sewage Substances 0.000 claims description 20
- 239000012528 membrane Substances 0.000 claims description 10
- 238000010992 reflux Methods 0.000 claims description 8
- 230000007613 environmental effect Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 7
- 238000004065 wastewater treatment Methods 0.000 abstract description 5
- 230000015784 hyperosmotic salinity response Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 230000014759 maintenance of location Effects 0.000 description 14
- 238000003756 stirring Methods 0.000 description 8
- 150000003839 salts Chemical class 0.000 description 6
- 238000005273 aeration Methods 0.000 description 5
- 239000003245 coal Substances 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910052740 iodine Inorganic materials 0.000 description 3
- 239000011630 iodine Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 241000605272 Acidithiobacillus thiooxidans Species 0.000 description 2
- 241000588813 Alcaligenes faecalis Species 0.000 description 2
- 241000193755 Bacillus cereus Species 0.000 description 2
- 241000193752 Bacillus circulans Species 0.000 description 2
- 241000193749 Bacillus coagulans Species 0.000 description 2
- 241000206596 Halomonas Species 0.000 description 2
- 241000588915 Klebsiella aerogenes Species 0.000 description 2
- 241000186840 Lactobacillus fermentum Species 0.000 description 2
- 241000191938 Micrococcus luteus Species 0.000 description 2
- 241000589597 Paracoccus denitrificans Species 0.000 description 2
- 241000589517 Pseudomonas aeruginosa Species 0.000 description 2
- 241000589776 Pseudomonas putida Species 0.000 description 2
- 241000316848 Rhodococcus <scale insect> Species 0.000 description 2
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 2
- 235000014680 Saccharomyces cerevisiae Nutrition 0.000 description 2
- 229940005347 alcaligenes faecalis Drugs 0.000 description 2
- 229940054340 bacillus coagulans Drugs 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229940092559 enterobacter aerogenes Drugs 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 229940012969 lactobacillus fermentum Drugs 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229940081969 saccharomyces cerevisiae Drugs 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229960001126 alginic acid Drugs 0.000 description 1
- 235000010443 alginic acid Nutrition 0.000 description 1
- 229920000615 alginic acid Polymers 0.000 description 1
- 239000000783 alginic acid Substances 0.000 description 1
- 150000004781 alginic acids Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000979 synthetic dye Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/348—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the way or the form in which the microorganisms are added or dosed
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention provides a treatment method of cotton printing and dyeing wastewater, which comprises the following steps: sequentially carrying out facultative treatment and aerobic treatment on cotton printing and dyeing wastewater; wherein the facultative microorganisms adopted in the facultative treatment comprise ECM-210 microbial agent and ECM-110 microbial agent with the mass ratio of 1:5-15; the aerobic microorganisms adopted in the aerobic treatment comprise ECM-210 microbial agent and ECM-110 microbial agent with the mass ratio of 1:10-20. The invention also provides a cotton printing and dyeing wastewater treatment system. The method provided by the application has higher treatment stability and volume utilization rate, such as 8000-20000 mg/L of salt tolerance, 3000-5000 mg/L of chloride ion concentration, 80-94% of COD removal rate, 75-85% of chromaticity removal rate, only 0.05-0.10 kg of sludge/kg of COD and 85-95% of ammonia nitrogen removal rate.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to a treatment method and a treatment system for cotton printing and dyeing wastewater.
Background
The cotton printing and dyeing wastewater has the characteristics of deep chromaticity, high COD concentration, high total salt content, high ammonia nitrogen concentration, large water quality change and the like. With the development of chemical industry and textile industry, the quantity and types of synthetic dyes and sizing agents in dyeing wastewater are continuously increased, so that the biodegradability of the wastewater is reduced, the ideal treatment effect is often not achieved by adopting a conventional wastewater treatment process, the defects and defects of the traditional activated sludge method in the dyeing wastewater are more and more obvious, and particularly, the defects are poor in the aspects of biological decolorization of the wastewater and biochemistry of refractory organic matters. The biochemical treatment effect of the printing and dyeing wastewater depends on the conversion capability of microorganisms in a treatment system to pollutants in the wastewater to a great extent, and particularly the degradation effect of residual dye assistants such as PVA, alginic acid, dispersing agents and the like in the wastewater is not ideal, so that COD in the wastewater cannot be completely degraded. In addition, as the salt content of the cotton printing and dyeing wastewater is higher, the microbial activity in the wastewater is inhibited, the pollutant degradation effect is not ideal, and the decoloring effect is poor, which is always a difficult point.
Disclosure of Invention
In view of the above, the invention provides a treatment method and a treatment system for cotton printing and dyeing wastewater, wherein the treatment method provided by the invention has higher COD removal rate and better decoloring effect on the cotton printing and dyeing wastewater.
The invention provides a treatment method of cotton printing and dyeing wastewater, which comprises the following steps:
sequentially carrying out facultative treatment and aerobic treatment on cotton printing and dyeing wastewater; wherein the facultative microorganisms adopted in the facultative treatment comprise ECM-210 microbial agent and ECM-110 microbial agent with the mass ratio of 1:5-15; the aerobic microorganisms adopted in the aerobic treatment comprise ECM-210 microbial agent and ECM-110 microbial agent with the mass ratio of 1:10-20.
The ECM-210 microbial inoculum and the ECM-110 microbial inoculum are both from Jiangsu Yuan Jie environmental science and technology Co., ltd, the ECM-210 microbial inoculum is powder, and the ECM-110 microbial inoculum is liquid, and is prepared by compounding one or more strains of halophilic halomonas, bacillus cereus, bacillus circulans, acetominium, bacillus coagulans, pseudomonas aeruginosa, micrococcus luteus, thiobacillus thiooxidans, rhodococcus brevis, paracoccus denitrificans, alcaligenes faecalis, pseudomonas putida, enterobacter aerogenes, saccharomyces cerevisiae and lactobacillus fermentum.
According to the invention, ECM-210 microbial inoculum and ECM-110 microbial inoculum are selected to respectively perform facultative reaction and aerobic reaction according to different proportion ratios to treat cotton printing and dyeing wastewater, so that the removal rate of COD in the cotton printing and dyeing wastewater is high, and the decoloring effect is good.
In one embodiment, the mass ratio of ECM-210 to ECM-110 in the facultative organism is less than the mass ratio of ECM-210 to ECM-110 in the aerobic organism. For example, in the facultative organism, the mass ratio of the ECM-210 microbial agent to the ECM-110 microbial agent is 1:10; in the aerobic microorganism, the mass ratio of the ECM-210 microbial agent to the ECM-110 microbial agent is 1:12. Or in the facultative microorganisms, the mass ratio of the ECM-210 microbial agent to the ECM-110 microbial agent is 1:12; in the aerobic microorganism, the mass ratio of the ECM-210 microbial agent to the ECM-110 microbial agent is 1:19. Or in the facultative microorganisms, the mass ratio of the ECM-210 microbial agent to the ECM-110 microbial agent is 1:8; in the aerobic microorganism, the mass ratio of the ECM-210 microbial agent to the ECM-110 microbial agent is 1:15.
In one embodiment, the ECM-210 microbial agent has an effective viable count of 2 x 10 8 ～4*10 8 The effective viable count of the CFU/g ECM-110 microbial inoculum is 3 x 10 7 ～6*10 7 CFU/mL。
In one embodiment, in the cotton printing and dyeing wastewater, COD is more than 1000mg/L, ammonia nitrogen is more than 150mg/L, and chromaticity is more than 800 times. In one embodiment, in the cotton printing and dyeing wastewater, COD is 1000-2500 mg/L, ammonia nitrogen is 150-350 mg/L, and chromaticity is 800-1500 times.
In order to realize the high-speed propagation of the sludge, the sewage mixed solution after the aerobic treatment flows back to the facultative reaction chamber, and the reflux ratio is 60-100%.
After the system is stable, the technological parameters for treating the cotton printing and dyeing wastewater are as follows: the treatment flow is 375-500 m3/h, the hydraulic retention time of the facultative reactor is 35-48 h, the DO is 0.5-1.0 mg/L, the hydraulic retention time of the aerobic reactor is 40-50 h, and the DO is 2.0-4.0 mg/L.
Experimental results show that the removal rate of COD by the treatment method provided by the invention is more than 90%, the removal rate of ammonia nitrogen is more than 90%, the chromaticity removal rate is more than 85%, and the sludge yield is more than 2%.
The invention also provides a system for treating cotton printing and dyeing wastewater, which comprises: the anaerobic system is connected with the sewage outlet of the anaerobic system; a facultative microorganism film is arranged in the facultative system, and an aerobic microorganism film is arranged in the aerobic system;
the facultative microbial membrane initially comprises an ECM-210 microbial agent and an ECM-110 microbial agent in a mass ratio of 1:5-15; the aerobic microbial membrane initially comprises an ECM-210 microbial agent and an ECM-110 microbial agent in a mass ratio of 1:10-20.
The invention takes the ECM-210 microbial inoculum and the ECM-110 microbial inoculum as core treatment microorganisms, and realizes removal of COD, ammonia nitrogen, chromaticity and the like in the cotton printing and dyeing wastewater by setting different proportions of a facultative system and an aerobic system, thereby having higher treatment efficiency.
In one embodiment, the facultative system includes a facultative reaction chamber and a circulation chamber in communication with the facultative reaction chamber. Specifically, the circulation chamber serves as an internal circulation to circulate the sewage in the facultative reaction chamber and the circulation chamber, thereby improving the facultative reaction efficiency. The facultative reaction chamber is internally provided with a biological membrane, and the carrier of the biological membrane can be activated carbon for loading facultative microorganisms. The activated carbon includes, but is not limited to, fibrous activated carbon, powdered activated carbon, or granular activated carbon, preferably granular activated carbon. The granular activated carbon is used as a filler, so that the membrane is beneficial to producing granular sludge, and the treatment effect of a biochemical system is enhanced. In one embodiment, the granular activated carbon is granular coal activated carbon, the mesh number of the granular coal activated carbon is 100-200 meshes, the iodine value is 600-1000, the floating rate is 1-10%, and the ash content is 10-15%. In one embodiment, the volume of the activated carbon is 8% -20%, preferably 10% -15% of the total volume of the facultative reaction chamber.
The top of the facultative reaction chamber may be provided with a gas collecting device for collecting the generated gas, which may be a gas collecting pipe or the like. The facultative reaction chamber can be further provided with a stirring device for stirring sewage and improving treatment effect. In some embodiments, the stirring device may be a plug flow stirring device. The facultative reaction chamber can be provided with an emptying device and a sludge pipe, and the sludge pipe is connected with a sludge circulating pump to realize the circulation of sludge.
In one embodiment, the aerobic system comprises an aerobic reaction chamber and a sludge recirculation tank communicated with the aerobic reaction chamber. The sewage inlet of the aerobic reaction chamber is connected with the sludge outlet of the facultative system, and sewage after facultative treatment enters the aerobic system to continue aerobic reaction. The aerobic reaction chamber is internally provided with a biological film, and the carrier of the biological film can be activated carbon for loading aerobic microorganisms. The activated carbon includes, but is not limited to, fibrous activated carbon, powdered activated carbon, or granular activated carbon, preferably granular activated carbon. The granular activated carbon is used as a filler, so that the membrane is beneficial to producing granular sludge, and the treatment effect of a biochemical system is enhanced. In one embodiment, the granular activated carbon is granular coal activated carbon, the mesh number of the granular coal activated carbon is 100-200 meshes, the iodine value is 600-1000, the floating rate is 1-10%, and the ash content is 10-15%. In one embodiment, the volume of the activated carbon accounts for 5-10%, preferably 6-8% of the total volume of the aerobic reaction chamber.
An aeration device, such as an aeration pipe, is arranged at the bottom of the aerobic reaction chamber and is used for supplying oxygen to the reaction. The bottom of the aerobic reaction chamber is also provided with a stirring device for stirring sewage. In some embodiments, an aeration stirring device is arranged at the bottom of the aerobic reaction chamber, and the aeration stirring device is communicated with an air pipe. The bottom of the sludge reflux tank is provided with a sludge hopper, sewage in the sludge reflux tank can flow back to the facultative system through a sludge circulating pipe for internal circulation treatment, and sludge in the sludge hopper can flow back to the aerobic reaction chamber through the sludge circulating pipe for recycling. An overflow weir, such as a zigzag overflow weir, is fixedly arranged on the inner wall of the sludge reflux tank.
In the initial operation stage of the treatment system, the facultative microbial membrane is added with an ECM-210 microbial agent and an ECM-110 microbial agent with mass ratio of 1:5-15; the aerobic microbial film is added with ECM-210 microbial agent and ECM-110 microbial agent with mass ratio of 1:10-20. The ECM-210 microbial inoculum and the ECM-110 microbial inoculum are both from Jiangsu Yuan Jie environmental science and technology Co., ltd, the ECM-210 microbial inoculum is powder, and the ECM-110 microbial inoculum is liquid, and is prepared by compounding one or more strains of halophilic halomonas, bacillus cereus, bacillus circulans, acetominium, bacillus coagulans, pseudomonas aeruginosa, micrococcus luteus, thiobacillus thiooxidans, rhodococcus brevis, paracoccus denitrificans, alcaligenes faecalis, pseudomonas putida, enterobacter aerogenes, saccharomyces cerevisiae and lactobacillus fermentum.
In one embodiment, the mass ratio of ECM-210 to ECM-110 in the facultative organism is less than the mass ratio of ECM-210 to ECM-110 in the aerobic organism. For example, in the facultative organism, the mass ratio of the ECM-210 microbial agent to the ECM-110 microbial agent is 1:10; in the aerobic microorganism, the mass ratio of the ECM-210 microbial agent to the ECM-110 microbial agent is 1:12. Or in the facultative microorganisms, the mass ratio of the ECM-210 microbial agent to the ECM-110 microbial agent is 1:12; in the aerobic microorganism, the mass ratio of the ECM-210 microbial agent to the ECM-110 microbial agent is 1:19. Or in the facultative microorganisms, the mass ratio of the ECM-210 microbial agent to the ECM-110 microbial agent is 1:8; in the aerobic microorganism, the mass ratio of the ECM-210 microbial agent to the ECM-110 microbial agent is 1:15.
In one embodiment, the ECM-210 microbial agent has an effective viable count of 2 x 10 8 ～4*10 8 The effective viable count of the CFU/g ECM-110 microbial inoculum is 3 x 10 7 ～6*10 7 CFU/mL。
The microbial inoculum on the concurrently-cultured microbial film and the aerobic microbial film can be quickly propagated in the running process and after stable running of the system, so that a stable state is achieved.
Compared with the common sludge method disclosed by the prior art, the COD removal rate of the method on cotton printing and dyeing wastewater is only 75%, the salt tolerance is lower than 8000mg/L, the chloride ion concentration is lower than 2000mg/L, the chromaticity removal rate is lower than 65%, the sludge yield is higher than 1kg of sludge/kgCOD, and the ammonia nitrogen removal rate is lower than 80%. The system provided by the application has higher treatment stability and volume utilization rate, such as 8000-20000 mg/L of salt tolerance, 3000-5000 mg/L of chloride ion concentration, 80-94% of COD removal rate, 75-85% of chromaticity removal rate, and mud yield of only 0.05-0.10 kg of mud/kgCOD, and 85-95% of ammonia nitrogen removal rate, and effectively reduces the treatment cost of cotton printing and dyeing wastewater, and has wide application prospect and good economic benefit.
Drawings
Fig. 1 is a schematic structural diagram of a cotton printing and dyeing wastewater treatment system according to an embodiment of the present application.
Detailed Description
Those skilled in the art can, with the benefit of this disclosure, suitably modify the process parameters to achieve this. It is expressly noted that all such similar substitutions and modifications will be apparent to those skilled in the art, and are deemed to be included in the present invention. While the methods and applications of this invention have been described in terms of preferred embodiments, it will be apparent to those skilled in the relevant art that the invention can be practiced and practiced with modification and alteration and combination of the methods and applications herein without departing from the spirit and scope of the invention.
The method and system for treating cotton printing and dyeing wastewater provided by the invention are further described below with reference to examples.
Unless otherwise specified, the materials used in the present invention are commercially available. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
Example 1
As shown in fig. 1, fig. 1 is a schematic structural diagram of a cotton printing and dyeing wastewater treatment system provided by the embodiment of the invention, wherein 1 is a facultative system and 2 is an aerobic system.
The facultative system 1 comprises a facultative reaction chamber 11 and a circulation chamber 12 communicated with a water outlet of the facultative reaction chamber 11, wherein the water outlet of the circulation chamber 12 circulates back to the facultative reaction chamber 11 through an inner circulation pipeline 13.
The aerobic system 1 comprises an aerobic reaction chamber 21 connected with a water outlet of the facultative reaction chamber 11 and a sludge reflux tank 22 connected with the water outlet of the aerobic reaction chamber 21, wherein a sludge outlet of the sludge reflux tank 22 is connected with a sludge inlet of the aerobic reaction chamber 21 through an internal circulation pipeline, and a sewage outlet of the aerobic reaction chamber 21 is connected with a sewage inlet of the facultative reaction chamber 11 through a sludge pump 24. An aeration device (not shown in the figure) is provided at the bottom of the aerobic reaction chamber 21 to maintain the aerobic state of the reaction chamber 21.
The facultative reaction chamber 11 and the aerobic reaction chamber 21 are filled with granular coal-based activated carbon (not shown in the figure) having a mesh number of 150 mesh, an iodine value of 650, a floating rate of 3%, and ash content of 10%; the volume of the granular active carbon in the facultative reaction chamber accounts for 10% of the total volume of the reaction chamber, and the volume of the granular active carbon in the aerobic reaction chamber accounts for 5% of the total volume of the reaction chamber.
The facultative reaction chamber 11 is provided with a facultative microbial agent (not shown in the figure), the facultative microbial agent is derived from ECM-210 and ECM-110 printing and dyeing customized microbial agents of Jiangsu yuan environmental sciences, the ECM-210 is powder, the ECM-110 is liquid, and the ECM-220 effective viable bacteria are 3×10 8 CFU/g, ECM-110 active bacteria 4 x 10 7 CFU/m, mass ratio of ECM-210 to ECM-110 is 1:12; an aerobic microbial agent is arranged in the aerobic reaction chamber 21, the aerobic microbial agent is derived from ECM-210 and ECM-110 printing and dyeing customized microbial agent of Jiangsu Yuan environmental sciences Co., ltd, the ECM-210 is powder, the ECM-110 is liquid, and the effective viable bacteria of the ECM-220 is 3 x 10 8 CFU/g, ECM-110 active bacteria 4 x 10 7 In the CFU/m aerobic microbial agent, the mass ratio of ECM-210 to ECM-110 is 1:19.
the system operates according to the following method: cotton dyeing sewage firstly enters a facultative reaction chamber 11 to perform facultative reaction under the action of facultative microorganisms, 80% of sewage circulates in the facultative system 1 through a circulation chamber 12, the rest of sewage enters an aerobic reaction chamber 21 to perform aerobic reaction, the rest of sewage passes through a sludge sedimentation tank 22, sludge is sedimentated and then enters the aerobic reaction chamber 21 again through a sludge pump, and 80% of sewage flows back to the facultative reaction chamber 11 through a reflux pump. Experimental results show that the system can resist 8000-20000 mg/L of salt and 3000-5000 mg/L of chloride ions.
The waste water of a printing and dyeing mill in Shandong coast state is selected for treatment, the COD of raw water is 1754-2100 mg/L, the ammonia nitrogen is 265-310 mg/L, the chromaticity is about 1300 times, and the treatment parameters are as follows: inflow water flow 375-450 m 3 And/h, the hydraulic retention time of the facultative reaction system is 40h, the DO is controlled to be 0.5-1.0 mg/L, the hydraulic retention time of the aerobic reaction system is 42h, the DO is controlled to be 2.0-4.0 mg/L, the treatment effect is shown in table 1, and table 1 shows the treatment effects provided in examples 1-3.
Example 2
Compared with example 1, the difference is that in the facultative microbial agent, the mass ratio of ECM-210 to ECM-110 is 1:10; in the aerobic microbial agent, the mass ratio of ECM-210 to ECM-110 is 1:12.
the waste water of a printing and dyeing mill in Shandong coast state is selected for treatment, the COD of raw water is 1754-2100 mg/L, the ammonia nitrogen is 265-310 mg/L, the chromaticity is about 1300 times, and the treatment parameters are as follows: inflow water flow 375-450 m 3 And/h, the hydraulic retention time of the facultative reaction system is 40h, the DO is controlled to be 0.5-1.0 mg/L, the hydraulic retention time of the aerobic reaction system is 42h, the DO is controlled to be 2.0-4.0 mg/L, the treatment effect is shown in table 1, and table 1 shows the treatment effects provided in examples 1-3.
Example 3
Compared with example 1, the difference is that in the facultative microbial agent, the mass ratio of ECM-210 to ECM-110 is 1:8, 8; in the aerobic microbial agent, the mass ratio of ECM-210 to ECM-110 is 1:15.
the waste water of a printing and dyeing mill in Shandong coast state is selected for treatment, the COD of raw water is 1754-2100 mg/L, the ammonia nitrogen is 265-310 mg/L, the chromaticity is about 1300 times, and the treatment parameters are as follows: inflow water flow 375-450 m 3 The hydraulic retention time of the facultative reaction system is 40h, the DO is controlled between 0.5 and 1.0mg/L, the hydraulic retention time of the aerobic reaction system is 42h, the DO is controlled between 2.0 and 4.0mg/L, and the treatment effect is as followsTable 1 shows the treatment effects provided in examples 1 to 3.
TABLE 1 treatment effects provided by examples 1-3
Example 4
The difference from example 1 is that 100% of the sewage was returned to the facultative reaction chamber 11 by the return pump. Experimental results show that the system can resist 8000-20000 mg/L of salt and 3000-5000 mg/L of chloride ions.
The waste water of a printing and dyeing mill in Shandong state is selected for treatment, the COD of raw water is 1265-1577 mg/L, the ammonia nitrogen is 198-225 mg/L, the chromaticity is about 1000 times, and the treatment parameters are as follows: inflow water flow 375-450 m 3 And/h, the hydraulic retention time of the facultative reaction system is 40h, the DO is controlled to be 0.5-1.0 mg/L, the hydraulic retention time of the aerobic reaction system is 42h, the DO is controlled to be 2.0-4.0 mg/L, the treatment effect is shown in table 2, and table 2 shows the treatment effects provided in examples 4-6.
Example 5
The difference compared with example 2 is that 100% of the sewage is returned to the facultative reaction chamber 11 by the return pump. Experimental results show that the system can resist 8000-20000 mg/L of salt and 3000-5000 mg/L of chloride ions.
The waste water of a printing and dyeing mill in Shandong state is selected for treatment, the COD of raw water is 1265-1577 mg/L, the ammonia nitrogen is 198-225 mg/L, the chromaticity is about 1000 times, and the treatment parameters are as follows: inflow water flow 375-450 m 3 And/h, the hydraulic retention time of the facultative reaction system is 40h, the DO is controlled to be 0.5-1.0 mg/L, the hydraulic retention time of the aerobic reaction system is 42h, the DO is controlled to be 2.0-4.0 mg/L, the treatment effect is shown in table 2, and table 2 shows the treatment effects provided in examples 4-6.
Example 6
The difference compared with example 3 is that 100% of the sewage is returned to the facultative reaction chamber 11 by the return pump. Experimental results show that the system can resist 8000-20000 mg/L of salt and 3000-5000 mg/L of chloride ions.
The waste water of a printing and dyeing mill in Shandong state is selected for treatment, the COD of raw water is 1265-1577 mg/L, the ammonia nitrogen is 198-225 mg/L, the chromaticity is about 1000 times, and the treatment parameters are as follows: inflow water flow 375-450 m 3 And/h, the hydraulic retention time of the facultative reaction system is 40h, the DO is controlled to be 0.5-1.0 mg/L, the hydraulic retention time of the aerobic reaction system is 42h, the DO is controlled to be 2.0-4.0 mg/L, the treatment effect is shown in table 2, and table 2 shows the treatment effects provided in examples 4-6.
Table 2 effects of treatment provided in examples 4 to 6
The above examples are merely preferred embodiments of the present invention and several improvements, modifications or adaptations may be made on the basis of the present invention without departing from its principle, which shall also be regarded as the scope of the invention.
Claims (5)
1. A method for treating cotton printing and dyeing wastewater comprises the following steps:
sequentially carrying out facultative treatment and aerobic treatment on cotton printing and dyeing wastewater; wherein the facultative microorganisms adopted in the facultative treatment comprise ECM-210 microbial agent and ECM-110 microbial agent with the mass ratio of 1:10; the aerobic microorganisms adopted in the aerobic treatment comprise ECM-210 microbial agents and ECM-110 microbial agents in a mass ratio of 1:12;
the ECM-210 microbial inoculum and the ECM-110 microbial inoculum are both from Jiangsu Yuan Jie environmental technology Co., ltd, wherein the ECM-210 microbial inoculum is powder, and the ECM-110 microbial inoculum is liquid; the effective viable count of the ECM-210 microbial inoculum is 2 x 10 8 ～4*10 8 The effective viable count of the CFU/g ECM-110 microbial inoculum is 3 x 10 7 ～6*10 7 CFU/ml；
100% of the sewage after the aerobic treatment flows back to the facultative treatment.
2. The method according to claim 1, wherein the COD in the cotton printing and dyeing wastewater is more than 1000mg/L, the ammonia nitrogen is more than 150mg/L, and the chromaticity is more than 800 times.
3. A system for treating cotton printing and dyeing wastewater, comprising: the anaerobic system is connected with the sewage outlet of the anaerobic system; a facultative microorganism film is arranged in the facultative system, and an aerobic microorganism film is arranged in the aerobic system;
the facultative microbial membrane initially comprises an ECM-210 microbial agent and an ECM-110 microbial agent in a mass ratio of 1:10; the aerobic microbial film initially comprises an ECM-210 microbial agent and an ECM-110 microbial agent in a mass ratio of 1:12; the ECM-210 microbial inoculum and the ECM-110 microbial inoculum are both from Jiangsu Yuan Jie environmental technology Co., ltd, wherein the ECM-210 microbial inoculum is powder, and the ECM-110 microbial inoculum is liquid; the effective viable count of the ECM-210 microbial inoculum is 2 x 10 8 ～4*10 8 The effective viable count of the CFU/g ECM-110 microbial inoculum is 3 x 10 7 ～6*10 7 CFU/ml；
The facultative system comprises a facultative reaction chamber and a circulation chamber communicated with the facultative reaction chamber;
the aerobic system comprises an aerobic reaction chamber and a sludge reflux tank communicated with the aerobic reaction chamber;
and 100% of the mixed solution in the aerobic system flows back to the facultative system.
4. The treatment system of claim 3, wherein the support in the facultative microbial membrane and the aerobic microbial membrane is activated carbon.
5. The treatment system of claim 4, wherein the activated carbon is a fibrous activated carbon, a powdered activated carbon, or a granular activated carbon.
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Application publication date: 20220906 Assignee: Binzhou Jiecheng Water Service Co.,Ltd. Assignor: YUYUE HOME TEXTILE Co.,Ltd. Contract record no.: X2024980006701 Denomination of invention: A treatment method and system for cotton printing and dyeing wastewater Granted publication date: 20240126 License type: Common License Record date: 20240607 |