CN110981113A - Process for recovering printing and dyeing discharged wastewater - Google Patents

Process for recovering printing and dyeing discharged wastewater Download PDF

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Publication number
CN110981113A
CN110981113A CN201911367305.5A CN201911367305A CN110981113A CN 110981113 A CN110981113 A CN 110981113A CN 201911367305 A CN201911367305 A CN 201911367305A CN 110981113 A CN110981113 A CN 110981113A
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China
Prior art keywords
stage
printing
water
dyeing
reverse osmosis
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CN201911367305.5A
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Chinese (zh)
Inventor
胡长鑫
胡晓宇
吴瑞军
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Tianjin Motimo Membrane Technology Co Ltd
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Tianjin Motimo Membrane Technology Co Ltd
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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
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/722—Oxidation by peroxides
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
    • 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
    • C02F3/12—Activated sludge processes
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1268—Membrane bioreactor systems
    • 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
    • C02F3/30—Aerobic and anaerobic processes
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/131—Reverse-osmosis

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

The invention belongs to the field of sewage treatment, and particularly relates to a process for recovering printing and dyeing discharge wastewater, which comprises the following steps of 1) a pretreatment part, wherein the pretreatment part comprises the sequential working procedures of a grating stage, an air flotation stage, a hydrolysis acidification stage, an anaerobic stage, an aerobic stage and an MBR stage; 2) the reduction part comprises sequential processes of an RO reverse osmosis membrane stage and an NF nanofiltration membrane stage; 3) the deep treatment comprises a Fenton process and an active carbon MBR stage. The process can be used in most printing and dyeing industries, has high COD content of organic pollutants, can effectively reduce the content of the organic pollutants in water, achieves the purpose of reduction and desalination through a reverse osmosis process, greatly improves the water quality, meets the requirement of reuse water, and can effectively reduce the discharge amount and the water consumption of enterprise wastewater, thereby achieving the purpose of reducing the pollution of the printing and dyeing wastewater.

Description

Process for recovering printing and dyeing discharged wastewater
Technical Field
The invention belongs to the field of sewage treatment, and particularly relates to a process for recovering printing and dyeing discharged wastewater.
Background
In China, the printing and dyeing industry occupies an important position in national economic development, printing and dyeing wastewater is a main source of pollution of textile industry, the treatment of the printing and dyeing wastewater is a difficult problem before the development of environmental protection, and the printing and dyeing wastewater has large amount and complex components, contains various dyes, printing and dyeing auxiliaries, acid, alkali and inorganic salt, is difficult to degrade and decolor, has high operation cost and the like, and is very difficult to treat.
The incomplete statistics of the discharged wastewater per year in the national printing and dyeing industry is about 0.6 × 109m3, the number is conservative, and most of the wastewater in the wastewater cannot achieve stable standard discharge, namely the wastewater is not recycled. However, with the destruction of the domestic environment, the improvement of the domestic environmental protection requirement, the enhancement of the treatment of the printing and dyeing wastewater and the reduction of the harm are urgent problems, corresponding measures are taken for printing and dyeing enterprises, the recycling and standard discharge of the discharged wastewater are too good, and the method is not only the requirement of sustainable development, but also the key for improving the economic benefit of the enterprises.
Aiming at the difficulty of printing and dyeing wastewater treatment, a very ideal treatment method has not been found so far, so that the development of a relatively complete treatment process has important significance.
Disclosure of Invention
The invention aims to provide a process for recovering printing and dyeing wastewater.
In order to achieve the purpose, the invention adopts the following technical scheme:
a process for recovering waste water discharged by printing and dyeing is characterized by comprising
1) The pretreatment part comprises a grid stage, an air floatation stage, a hydrolysis acidification stage, an anaerobic stage, an aerobic stage and an MBR stage in sequence;
2) the reduction part comprises sequential processes of an RO reverse osmosis membrane stage and an NF nanofiltration membrane stage; the concentrated water outlet of the RO reverse osmosis membrane is connected with the raw water inlet of the NF nanofiltration membrane;
3) the deep treatment comprises a Fenton process and an active carbon MBR stage.
The grating stage in the step 1) comprises 1-2 coarse gratings with clear distance of 5-8 mm and 2-3 fine gratings with clear distance of 1-2 mm.
And (2) adding liquid caustic soda to adjust the pH value to be 6.5-7 in the air flotation stage in the step 1), adding 1000ppm of PAC flocculant and 5-10ppm of cation PAM to perform filter pressing and desliming, wherein the water content of the sludge is 60%, and the COD removal rate of raw water is more than 60%.
The dissolved oxygen in the anaerobic stage is less than 0.2mg/L, and the dissolved oxygen in the aerobic stage is controlled to be 5-8 mg/L; through the anaerobic stage and the aerobic stage, the removal rate of COD content is more than 85 percent. And 3, MBR (membrane bioreactor) membrane produced water SDI is less than 3, so that the water inlet requirement of a subsequent RO process is met.
The set recovery rate of the RO reverse osmosis membrane in the step 2) is 70 percent; and the concentrated water outlet of the RO reverse osmosis membrane enters the NF nanofiltration membrane stage, and the recovery rate of the NF nanofiltration membrane is set to be 40%.
And the produced water at the produced water outlets of the NF nanofiltration membrane and the RO reverse osmosis membrane is reused as printing and dyeing water.
Compared with the prior art, the invention has the beneficial effects that:
effectively comprehensively applies the water treatment technology to achieve the aim of recycling the printing and dyeing wastewater. The process adopts a double-membrane method (RO and NF double membranes) to treat the printing and dyeing wastewater, because different substances are separated or intercepted in the operation process of the membrane separation technology, the membrane separation process is a pure physical process, has no phase change and chemical reaction, and realizes the recovery of water resources under the condition of no secondary pollution; and the high-efficient separation of membrane, it is stable to go out water, has guaranteed that the product water of membrane can satisfy the water supply requirement. And the membrane equipment device has small occupied area, high automation degree and simple and convenient operation and maintenance.
The process can be used in most printing and dyeing industries, the COD content of organic pollutants is high, the traditional process treatment cannot reach the discharge standard, the content of the organic pollutants in water can be effectively reduced through a pretreatment process, the reduction purpose and the desalination effect are achieved through a reverse osmosis process, the water quality is greatly improved, the requirement of reuse water is met, the discharge amount and the water consumption of enterprise wastewater can be effectively reduced, and the purpose of reducing the pollution of printing and dyeing wastewater is achieved.
Drawings
FIG. 1 is a flow chart of the process for recovering waste water discharged from printing and dyeing according to the present invention;
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.
A recovery process for waste water discharged from printing and dyeing comprises, as shown in FIG. 1, taking a project in Jiangsu as an example, operating the whole system after the installation, wherein the system is designed to treat 4 ten thousand tons of water per day, the COD content of raw water is 1200-1500mg/L, and the pH is 3-5, and the process is applied to the water quality.
Three rotary grating machines are used for pre-treating the grating, wherein one coarse grating with a clear distance of 5mm and two fine gratings with a clear distance of 1mm intercept floating objects and larger particle suspended matters in the wastewater.
Effluent passes through 2 shallow air flotation water purifiers, the diameter of each standard is 14m, the treated water amount is 2 ten thousand tons/day, the pH of the effluent is acidic, after air flotation, the water quality is combined, liquid caustic soda with the concentration of 30% is added, the pH is adjusted to 6.5-7, PAC 1000ppm with the concentration of 10% is added in the air flotation process, cation PAM5-10ppm is subjected to filter pressing and desliming, sludge is treated by a plate and frame filter press, the treated sludge is pulled out of a factory for treatment, and the water content of sludge cakes is about 60% after filter pressing. Through the air floatation process, the COD content of raw water can be reduced from 1500mg/L to below 600mg/L, and the removal rate can reach more than 60 percent. The air floatation process is the beginning of pretreatment, the load and design of the subsequent process are directly influenced by the treatment effect, the water quality of inlet water needs to be continuously detected every day, and particularly, the indexes COD and pH of treatment in the process section are continuously detected, so that the adding amount of a medicament is determined. The pH value of the effluent of the process section is adjusted to 6.5-7 to meet the conditions of subsequent hydrolytic acidification and biochemical reaction. Measuring COD of raw water and effluent, and determining the removal effect of the process on organic pollutants in water and the incoming water condition of the subsequent process.
The air-float effluent passes through a hydrolytic acidification tank, macromolecular substances which are difficult to biodegrade are degraded into micromolecular substances which are easy to biodegrade through hydrolytic acidification, the full load retention time of the hydrolytic acidification tank is designed to be 5.3h, the sewage enters an anaerobic tank after passing through the hydrolytic acidification tank, the organic substances are hydrolyzed, acidified and methanated through the action of anaerobic bacteria to remove the organic substances in the wastewater, so that the sewage has better biochemical property, the full load retention time of the stage is designed to be 8.6h, the dissolved oxygen of the anaerobic tank is controlled within 0.2mg/L, the effluent of the anaerobic tank enters an oxygen consumption tank, the dissolved oxygen of an aerobic tank is controlled to be between 5 and 8mg/L, the organic substances are decomposed into inorganic substances through the aerobic respiration of activated sludge, so that the COD content in the water is reduced, the full load retention time of the stage is designed to be 19h according to the quality of the incoming water, and the treatment of the whole biochemical process is carried out, COD's clearance can reach more than 85%, and COD's content can reduce to within 90mg/L, and biochemical process goes out water, and after MBR membrane technology handles, COD's content can further reduce to within 70mg/L, or lower, and MBR membrane product water SDI <3 satisfies the requirement of intaking of follow-up RO technology.
The RO is set to have a recovery rate of 70 percent, namely, the RO is concentrated by 3.3 times, the indexes of hardness, salt content, ion content and the like in water are greatly removed by an RO system, and the RO system also has a remarkable decoloring function, and the produced high-quality water meets the requirement of printing and dyeing water and is directly recycled. Concentrated water of an RO system enters an NF system, a large amount of organic matters which are difficult to degrade are contained in the RO concentrated water, COD reaches about 200mg/L, the NF system is processed, the NF recovery rate is designed to be 40%, the organic matters in the water are further concentrated, the content of COD can reach about 320mg/L, the treatment is convenient, the treatment water amount is further reduced, the treatment capacity of subsequent processes is reduced, the produced water of NF and the produced water of RO are recycled together, the concentrated water of NF is subjected to Fenton process treatment, the COD can be reduced to within 100mg/L, the removal rate of COD by the Fenton process can reach more than 70%, the water subjected to the Fenton treatment reduces the content of COD to within 60mg/L by the treatment of an active carbon MBR system, and the removal rate of COD by the process reaches more than 40%. So that the produced water can reach the discharge standard.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims (7)

1. A process for recovering waste water discharged by printing and dyeing is characterized by comprising
1) The pretreatment part comprises a grid stage, an air floatation stage, a hydrolysis acidification stage, an anaerobic stage, an aerobic stage and an MBR stage in sequence;
2) the reduction part comprises sequential processes of an RO reverse osmosis membrane stage and an NF nanofiltration membrane stage; the concentrated water outlet of the RO reverse osmosis membrane is connected with the raw water inlet of the NF nanofiltration membrane;
3) the deep treatment comprises a Fenton process and an active carbon MBR stage.
2. The recycling process of printing and dyeing wastewater discharge according to claim 1, characterized in that the grating stage in step 1) comprises 1-2 coarse gratings with a clear distance of 5mm-8mm and 2-3 fine gratings with a clear distance of 1-2 mm.
3. The process for recovering the printing and dyeing wastewater according to claim 1, wherein in the step 1), liquid caustic soda is added in the air flotation stage to adjust the pH value to 6.5-7, and PAC flocculant 1000ppm and cationic PAM5-10ppm are added to carry out filter pressing and desliming, the water content of the sludge is 60%, and the COD removal rate of raw water is more than 60%.
4. The recovery process of printing and dyeing wastewater discharge according to claim 1, characterized in that the dissolved oxygen in the anaerobic stage is less than 0.2mg/L, and the dissolved oxygen in the aerobic stage is controlled to be 5-8 mg/L; through the anaerobic stage and the aerobic stage, the removal rate of COD content is more than 85 percent.
5. The printing and dyeing wastewater recovery process according to claim 1, characterized in that the MBR stage MBR membrane produced water SDI <3 meets the water inlet requirement of the subsequent RO process.
6. The process for recovering printing and dyeing wastewater according to claim 1, wherein the set recovery rate of the RO reverse osmosis membrane in step 2) is 70%; and the concentrated water outlet of the RO reverse osmosis membrane enters the NF nanofiltration membrane stage, and the recovery rate of the NF nanofiltration membrane is set to be 40%.
7. The process for recovering printing and dyeing wastewater according to claim 6, wherein the produced water from the produced water outlets of the NF nanofiltration membrane and the RO reverse osmosis membrane is recycled to the printing and dyeing water.
CN201911367305.5A 2019-12-26 2019-12-26 Process for recovering printing and dyeing discharged wastewater Pending CN110981113A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115849503A (en) * 2022-12-12 2023-03-28 浙江津膜环境科技有限公司 High-power recycling process for printing and dyeing wastewater

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101293726A (en) * 2008-06-06 2008-10-29 南京大学 Method for processing and separate-recycling printing and dyeing wastewater
CN102040313A (en) * 2010-09-27 2011-05-04 常熟市福亿印花炼染有限公司 Process for treating high-concentration printing and dying waste water
WO2012055263A1 (en) * 2010-10-28 2012-05-03 波鹰(厦门)科技有限公司 Apparatus and method for treating and recycling tannery wastewater based on nano catalytic electrolysis technology and membrane technology
CN103359878A (en) * 2013-07-12 2013-10-23 华南理工大学 Treatment method for realizing zero emission of printing and dyeing wastewater
CN103663849A (en) * 2012-09-13 2014-03-26 天津森诺过滤技术有限公司 Method for treating papermaking wastewater based on combined process including integrated membrane technology and advanced oxidation technology
CN204198516U (en) * 2014-10-14 2015-03-11 厦门绿创科技有限公司 A kind of dyeing waste water degree of depth combined treatment device
CN107651794A (en) * 2016-07-26 2018-02-02 中国科学院过程工程研究所 A kind of processing system and processing method of industrial wastewater bio-chemical effluent
CN108545885A (en) * 2018-04-11 2018-09-18 东华大学 A kind of cylinder yarn dyeing waste water dual treatment and the integrated technique of reuse
CN110194559A (en) * 2018-09-12 2019-09-03 中国科学院过程工程研究所 A kind of process of colour-spun yarns dyeing waste-water zero-emission and resource reusing

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101293726A (en) * 2008-06-06 2008-10-29 南京大学 Method for processing and separate-recycling printing and dyeing wastewater
CN102040313A (en) * 2010-09-27 2011-05-04 常熟市福亿印花炼染有限公司 Process for treating high-concentration printing and dying waste water
WO2012055263A1 (en) * 2010-10-28 2012-05-03 波鹰(厦门)科技有限公司 Apparatus and method for treating and recycling tannery wastewater based on nano catalytic electrolysis technology and membrane technology
CN103663849A (en) * 2012-09-13 2014-03-26 天津森诺过滤技术有限公司 Method for treating papermaking wastewater based on combined process including integrated membrane technology and advanced oxidation technology
CN103359878A (en) * 2013-07-12 2013-10-23 华南理工大学 Treatment method for realizing zero emission of printing and dyeing wastewater
CN204198516U (en) * 2014-10-14 2015-03-11 厦门绿创科技有限公司 A kind of dyeing waste water degree of depth combined treatment device
CN107651794A (en) * 2016-07-26 2018-02-02 中国科学院过程工程研究所 A kind of processing system and processing method of industrial wastewater bio-chemical effluent
CN108545885A (en) * 2018-04-11 2018-09-18 东华大学 A kind of cylinder yarn dyeing waste water dual treatment and the integrated technique of reuse
CN110194559A (en) * 2018-09-12 2019-09-03 中国科学院过程工程研究所 A kind of process of colour-spun yarns dyeing waste-water zero-emission and resource reusing

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
丁凌峰: "膜前预处理技术在印染废水处理中的应用进展", 《广东化工》, vol. 46, no. 9, pages 189 - 191 *
彭党聪: "《水污染控制工程》", 冶金工业出版社, pages: 178 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115849503A (en) * 2022-12-12 2023-03-28 浙江津膜环境科技有限公司 High-power recycling process for printing and dyeing wastewater

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