CN112624534A - Method for treating printing and dyeing wastewater based on ozone advanced oxidation technology - Google Patents

Method for treating printing and dyeing wastewater based on ozone advanced oxidation technology Download PDF

Info

Publication number
CN112624534A
CN112624534A CN202110122822.7A CN202110122822A CN112624534A CN 112624534 A CN112624534 A CN 112624534A CN 202110122822 A CN202110122822 A CN 202110122822A CN 112624534 A CN112624534 A CN 112624534A
Authority
CN
China
Prior art keywords
ozone
treatment
wastewater
printing
treating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110122822.7A
Other languages
Chinese (zh)
Inventor
王丽滨
刘新旺
郭忠凯
陈泽军
李国发
徐俊豪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Jinda Wanxiang Environmental Protection Technology Co ltd
Original Assignee
Zhejiang Jinda Wanxiang Environmental Protection Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Jinda Wanxiang Environmental Protection Technology Co ltd filed Critical Zhejiang Jinda Wanxiang Environmental Protection Technology Co ltd
Priority to CN202110122822.7A priority Critical patent/CN112624534A/en
Publication of CN112624534A publication Critical patent/CN112624534A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • 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
    • C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • 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
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • 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
    • C02F2001/007—Processes including a sedimentation step
    • 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
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • 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
    • 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
    • C02F3/1257—Oxidation ditches

Abstract

The invention discloses a method for treating printing and dyeing wastewater based on an ozone advanced oxidation technology, which comprises the steps of sequentially carrying out regulating tank treatment, primary precipitation treatment, oxidation ditch treatment, secondary precipitation treatment, aerobic tank treatment, tertiary precipitation treatment and ozone treatment, and then introducing sewage into a drainage system for discharge. When the method is applied to the treatment of the printing and dyeing wastewater, the method for treating the printing and dyeing wastewater based on the ozone advanced oxidation technology is used for deeply treating the wastewater generated by textile printing and dyeing production enterprises, improving the treatment efficiency in the biological treatment stage and reducing the pollutant content, COD (chemical oxygen demand) and chromaticity of the printing and dyeing wastewater. The effluent can reach the direct discharge standard specified by the discharge standard of textile dyeing and finishing. Meanwhile, the method has the advantages of good COD and total nitrogen removal effect, high space utilization rate, high ozone utilization rate and the like.

Description

Method for treating printing and dyeing wastewater based on ozone advanced oxidation technology
Technical Field
The invention relates to an industrial wastewater treatment technology, in particular to a method for treating printing and dyeing wastewater based on an ozone advanced oxidation technology.
Background
The production wastewater of the textile industry originates from all processes in the production process, including dyeing, washing, sizing, washing, bleaching, dewatering and other links, most of pollutants in the wastewater are generated in the washing, bleaching and dewatering processes, and main pollutants comprise sizing slurry (starch, polyvinyl alcohol PVA), washing and bleaching waste (pumice slag, short fibers), dyeing slurry (indigo dye, sulfur dye), printing and dyeing auxiliary agent and the like. The pollution type and concentration in the waste water are related to the textile printing and dyeing processing technology, and the main pollution of the printing and dyeing waste water is alkalinity, COD (chemical oxygen demand) and chromaticity.
The existing mainstream processes for treating printing and dyeing wastewater comprise a biological method, a physicochemical method and a chemical method. The biological degradation process utilizes the metabolic capability of bacteria, enzyme, fungi, algae or plants to oxidize or reduce compounds, the biological method has several limitations in the biological processes of COD degradation and decoloration, only biodegradable compounds can be converted, the existence of toxic substances can possibly inhibit the biological processes, and the treatment reaction time is longer. Physicochemical methods are, for example, PAC and FeSO4The method mainly comprises flocculant coagulating sedimentation treatment and a membrane treatment process with microfiltration and ultrafiltration, wherein a physical and chemical method is mainly to convert the aggregation of pollutants dispersed in a water phase into a solid phase for removal, the coagulating sedimentation requires a plurality of process units, chemical agents can be introduced to cause secondary pollution, the effluent quality of the membrane filtration process is good, but the operation cost is high, and the membrane filtration process is mainly used for tail end treatment or production of reuse water. The chemical principles include Fenton's method, TiO2And metal oxides such as ZnO and the like are subjected to photocatalytic degradation, and printing and dyeing wastewater is subjected to degradation treatment by ozone-based advanced oxidation technology, electrochemical oxidation, ultrasonic technology and the like, wherein 50-70% of COD can be generally removed by a Fenton method. Most of chemical methods utilize catalysts or chemical agents to oxidize and degrade pollutants in wastewater, chemical agents also have the risk of introducing secondary pollution, and meanwhile, because oxidizing agents are usually non-selective, the operation cost is overhigh due to large load of wastewater treatment.
At present, some printing and dyeing industry park enterprises basically carry out primary treatment on printing and dyeing wastewater and then discharge the printing and dyeing wastewater to a sewage treatment plant for continuous treatment, and cannot meet the current environment-friendly requirement of park drainage. Therefore, the treatment process of the sewage treatment unit in the textile industry park needs to be upgraded and modified for advanced treatment of the printing and dyeing wastewater.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for treating printing and dyeing wastewater based on an ozone advanced oxidation technology, which improves the quality of effluent water by carrying out decoloration treatment through the ozone advanced oxidation technology, can realize advanced treatment on the wastewater generated by textile printing and dyeing production enterprises, reduces the content of printing and dyeing substances, COD (chemical oxygen demand) and the chromaticity of the wastewater, and ensures that various indexes of the effluent water can stably reach the special emission limit standard of the discharge Standard of pollutants for textile dyeing and finishing industry (GB 4287-2012).
The technical scheme adopted by the invention for solving the technical problems is as follows:
a method for treating printing and dyeing wastewater based on an ozone advanced oxidation technology comprises the following steps:
1) treating in a regulating reservoir, namely introducing the printing and dyeing wastewater into the regulating reservoir to regulate the water quality and the water quantity;
2) performing primary precipitation treatment, namely introducing the wastewater obtained in the step 1) into a primary precipitation tank, and adding a coagulating agent into the primary precipitation tank to obtain a first supernatant and a precipitate, so as to primarily remove large-particle suspended matters in the wastewater;
3) performing oxidation ditch treatment, namely introducing the first supernatant obtained in the step 2) into an oxidation ditch, wherein the oxidation ditch is divided into four sections for carrying out sectional control aeration;
4) performing secondary precipitation treatment, namely introducing the wastewater obtained in the step 3) into a secondary precipitation tank for secondary precipitation to obtain a second supernatant and first precipitated sludge, and removing micro suspended matters and most organic matters and nitrogen and phosphorus pollutants;
5) treating in an aerobic tank, introducing the second supernatant obtained in the step 4) into the aerobic tank, and treating wastewater in the aerobic tank by adopting an aeration activated sludge method;
6) performing third precipitation treatment, namely introducing the wastewater obtained in the step 5) into a third precipitation tank to obtain a third supernatant and second precipitated sludge;
7) ozone treatment, namely introducing the third supernatant obtained in the step 6) into an ozone treatment tank, placing an ozone oxidation catalyst in the ozone treatment tank, introducing ozone into wastewater in the ozone treatment tank after introducing the third supernatant into the ozone treatment tank, and adopting an ozone elimination device to eliminate generated tail gas;
8) discharging the wastewater, and introducing the wastewater treated by the ozone in the step 7) into a drainage system.
Preferably, a part of the first precipitated sludge generated by the secondary precipitation in the step 4) is introduced into a sludge treatment device for treatment, and the other part of the first precipitated sludge flows back to the oxidation ditch in the step 3).
Preferably, a part of the second precipitated sludge generated by the third precipitation in the step 6) is introduced into a sludge treatment device for treatment, and the other part of the second precipitated sludge flows back to the aerobic tank in the step 5).
Preferably, the coagulating agent to be put into the primary sedimentation tank in the step 2) is polyaluminium chloride or polyacrylamide.
Preferably, the adding mass concentration of the polyaluminium chloride is 50-300 mg/L, and the adding mass concentration of the polyacrylamide is 0.5-4.0 mg/L.
Preferably, the ozone treatment step in the step 7) is carried out by adding an ozone oxidation catalyst with spinel or/and transition metal oxide as active ingredients.
Preferably, the adding concentration of ozone in the ozone treatment step in the step 7) is 20-70 mg/L, and the retention time of the wastewater to be treated in the ozone treatment step is 10-20 min.
Preferably, the printing and dyeing wastewater in the step 1) is neutralized, hydrolyzed, acidified and water quantity adjusted in an adjusting tank, the COD of the printing and dyeing wastewater after neutralization is 1000-4000 mg/L, the chroma is 1000-12000, and the pH is 12.
Preferably, the oxidation ditch in the step 3) is a rotary oxidation ditch, the first section of the oxidation ditch is an anaerobic section, the second section and the third section are both aeration sections, and the fourth section is a closing section.
Preferably, the residence time of the wastewater in the first section in the step 3) is 10 hours, the total residence time of the wastewater in the second section and the third section is 20 hours, and the residence time of the wastewater in the fourth section is 5 hours.
Compared with the prior art, the method for treating the printing and dyeing wastewater has the advantages that the method for treating the printing and dyeing wastewater based on the ozone advanced oxidation technology is used for deeply treating the wastewater generated by textile printing and dyeing enterprises, so that the treatment efficiency in a biological treatment stage is improved, and the pollutant content, COD (chemical oxygen demand) and the chromaticity of the wastewater in the printing and dyeing wastewater are reduced. The effluent can reach the direct discharge standard specified by the discharge standard of textile dyeing and finishing. Meanwhile, the method has the advantages of good COD and total nitrogen removal effect, high space utilization rate, high ozone utilization rate and the like.
Drawings
FIG. 1 is a flow chart showing a method for treating printing and dyeing wastewater according to the present embodiment;
FIG. 2 is a graph showing the degradation effect of the ozone treatment step on various targets in this example.
Detailed Description
The invention is described in further detail below with reference to figures 1-2.
A method for treating printing and dyeing wastewater based on an ozone advanced oxidation technology comprises the following steps:
the equalizing basin is handled, introduces the equalizing basin with printing and dyeing wastewater, carries out the regulation of quality of water yield, specifically for carry out the neutralization to quality of water in the equalizing basin, cushions the water yield, carries out hydrolysis acidification simultaneously to decompose the macromolecule organic matter into the micromolecule organic matter, become the soluble substance with insoluble organic matter, provide the condition for follow-up biological treatment. Wherein, the COD of the printing and dyeing wastewater after neutralization is 1000-4000 mg/L, the chroma is 1000-12000, and the pH is 12.
And (3) primary precipitation treatment, namely introducing the wastewater obtained by treatment of the regulating tank into a primary precipitation tank, and adding a coagulating agent into the primary precipitation tank to obtain a first supernatant and a precipitate, so as to preliminarily remove large suspended matters in the wastewater. Specifically, the coagulating agents added into the primary settling tank are polyaluminium chloride and polyacrylamide, the adding amount is 0.05-0.3 g and 0.5-4.0 g respectively added to each ton of water, namely the adding mass concentration of the polyaluminium chloride is 50-300 mg/L, the adding mass concentration of the polyacrylamide is 0.5-4.0 mg/L, the settling time of wastewater in the primary settling tank is controlled to be 20-24 hours, and all precipitates generated in the primary settling tank are introduced into sludge treatment equipment for treatment.
And (2) treating in an oxidation ditch, wherein the first supernatant obtained by primary precipitation treatment is introduced into the oxidation ditch, the oxidation ditch preferably adopts a rotary oxidation ditch, the oxidation ditch is divided into four sections for segmented control aeration, specifically, the first section of the oxidation ditch is an anaerobic section, the retention time of wastewater is 10 hours, the second section and the third section are both aeration sections, the retention time of wastewater is 20 hours, the fourth section is a closing section, the retention time of wastewater is 5 hours, and the removal effect of total nitrogen can be effectively controlled through the alternate control of anaerobic and aerobic. In the oxidation ditch treatment step, the internal and external reflux ratio needs to be controlled, specifically 1: 1.
performing secondary precipitation treatment, namely introducing the wastewater obtained after the oxidation ditch treatment into a secondary precipitation tank for secondary precipitation to obtain a second supernatant and first precipitated sludge for removing micro suspended matters and most organic matters and nitrogen and phosphorus pollutants; wherein, one part of the first precipitated sludge generated by the secondary precipitation is introduced into the sludge treatment equipment for treatment, and the other part of the first precipitated sludge flows back into the oxidation ditch to ensure the concentration of active microorganisms in the oxidation ditch. And controlling the precipitation time of the wastewater in the secondary precipitation tank to be 2-4 hours.
And (3) treating in an aerobic tank, introducing the second supernatant obtained by secondary precipitation treatment into the aerobic tank, and treating the wastewater in the aerobic tank by adopting an aeration activated sludge method to further degrade and remove pollutants and chromaticity. The treatment time of the wastewater in the aerobic tank is controlled to be 20-24 hours.
And (3) performing third precipitation treatment, namely introducing the wastewater treated by the aerobic tank into a third precipitation tank, and further removing pollutants such as colloid difficult to precipitate to obtain a third supernatant and second precipitated sludge. Wherein, the influent COD of the third supernatant is between 40mg and 50mg/L, the chroma is between 100 and 120, and the ammonia nitrogen concentration is between 3 and 12 mg/L. And controlling the settling time of the wastewater in the three-precipitation tank to be 2-3 hours.
And (2) ozone treatment, wherein a third supernatant in the three-precipitation tank is introduced into an ozone treatment tank, an ozone oxidation catalyst is placed in the ozone treatment tank, after the third supernatant is introduced into the ozone treatment tank, ozone is introduced into the wastewater in the ozone treatment tank, and an ozone elimination device is adopted to eliminate the generated tail gas. Wherein the adding amount of ozone is controlled to be 40-50 mg/L, and the concentration of ozone is controlled to be 140-180 mg/L. Specifically, ozone is introduced into the ozone treatment tank according to the concentration of 50mg/L, the retention time of the wastewater in the ozone treatment tank is 15min, so that the chromaticity of the wastewater is removed, organic matters are further removed through oxidation, the wastewater is introduced into a drainage system for effluent discharge after ozone treatment, and the residual ozone in the effluent continuously keeps a certain sterilization effect. The ozone treatment pool is provided with a tail gas destruction device to eliminate escaped ozone.
COD in the effluent after ozone treatment is less than 30mg/L, chroma is less than 30, and the effluent reaches the direct discharge standard specified by the textile dyeing and finishing discharge standard.
The ozone treatment process is added for decoloring and reducing COD, the biodegradability is improved, the degradation effect of a subsequent treatment unit is improved, and the requirements of factory recycling and the like are met. The test result of the ozone treatment process for treating the printing and dyeing wastewater shows that the ozone dosage is 50g/m3When the water content is above the standard, the effluent chroma is below 30, and the average reduction amplitude reaches 65%; the COD reduction is about 20mg/L, the average removal rate is 36 percent, and the degradation effect is good.
The oxidation of ozone is utilized to remove the chroma in the sewage and reduce COD, so that the water quality of the effluent meets the discharge standard, and the further treatment is realized for recycling the reclaimed water.
Compared with the prior art, the method for treating the printing and dyeing wastewater has the advantages that the method for treating the printing and dyeing wastewater based on the ozone advanced oxidation technology is used for deeply treating the wastewater generated by textile printing and dyeing enterprises, so that the treatment efficiency in a biological treatment stage is improved, and the pollutant content, COD (chemical oxygen demand) and the chromaticity of the wastewater in the printing and dyeing wastewater are reduced. The effluent can reach the direct discharge standard specified by the discharge standard of textile dyeing and finishing. Meanwhile, the method has the advantages of good COD and total nitrogen removal effect, high space utilization rate, high ozone utilization rate and the like.
Although preferred embodiments of the present invention have been described in detail hereinabove, it should be clearly understood that modifications and variations of the present invention are possible to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A method for treating printing and dyeing wastewater based on an ozone advanced oxidation technology is characterized by comprising the following steps:
1) treating in a regulating reservoir, namely introducing the printing and dyeing wastewater into the regulating reservoir to regulate the water quality and the water quantity;
2) performing primary precipitation treatment, namely introducing the wastewater obtained in the step 1) into a primary precipitation tank, and adding a coagulating agent into the primary precipitation tank to obtain a first supernatant and a precipitate, so as to primarily remove large-particle suspended matters in the wastewater;
3) performing oxidation ditch treatment, namely introducing the first supernatant obtained in the step 2) into an oxidation ditch, wherein the oxidation ditch is divided into four sections for carrying out sectional control aeration;
4) performing secondary precipitation treatment, namely introducing the wastewater obtained in the step 3) into a secondary precipitation tank for secondary precipitation to obtain a second supernatant and first precipitated sludge, and removing micro suspended matters and most organic matters and nitrogen and phosphorus pollutants;
5) treating in an aerobic tank, introducing the second supernatant obtained in the step 4) into the aerobic tank, and treating wastewater in the aerobic tank by adopting an aeration activated sludge method;
6) performing third precipitation treatment, namely introducing the wastewater obtained in the step 5) into a third precipitation tank to obtain a third supernatant and second precipitated sludge;
7) ozone treatment, namely introducing the third supernatant obtained in the step 6) into an ozone treatment tank, placing an ozone oxidation catalyst in the ozone treatment tank, introducing ozone into wastewater in the ozone treatment tank after introducing the third supernatant into the ozone treatment tank, and adopting an ozone elimination device to eliminate generated tail gas;
8) discharging the wastewater, and introducing the wastewater treated by the ozone in the step 7) into a drainage system.
2. The method for treating printing and dyeing wastewater based on ozone advanced oxidation technology as claimed in claim 1, characterized in that: introducing a part of the first precipitated sludge generated by the secondary precipitation in the step 4) into sludge treatment equipment for treatment, and refluxing the other part of the first precipitated sludge to the oxidation ditch in the step 3).
3. The method for treating printing and dyeing wastewater based on ozone advanced oxidation technology as claimed in claim 1, characterized in that: a part of the second precipitated sludge generated by the third precipitation in the step 6) is introduced into a sludge treatment device for treatment, and the other part of the second precipitated sludge flows back to the aerobic tank in the step 5).
4. The method for treating printing and dyeing wastewater based on ozone advanced oxidation technology as claimed in claim 1, characterized in that: the coagulating agent added into the primary sedimentation tank in the step 2) is polyaluminium chloride and polyacrylamide.
5. The method for treating printing and dyeing wastewater based on ozone advanced oxidation technology as claimed in claim 4, characterized in that: the adding mass concentration of the polyaluminium chloride is 50-300 mg/L, and the adding mass concentration of the polyacrylamide is 0.5-4.0 mg/L.
6. The method for treating printing and dyeing wastewater based on ozone advanced oxidation technology as claimed in claim 1, characterized in that: the ozone oxidation catalyst with spinel or/and transition metal oxide as active ingredients is added in the ozone treatment step in the step 7).
7. The method for treating printing and dyeing wastewater based on ozone advanced oxidation technology as claimed in claim 6, characterized in that: the adding concentration of ozone in the ozone treatment step in the step 7) is 20-70 mg/L, and the retention time of wastewater to be treated in the ozone treatment step is 10-20 min.
8. The method for treating printing and dyeing wastewater based on ozone advanced oxidation technology as claimed in claim 1, characterized in that: and (2) neutralizing, hydrolyzing, acidifying and adjusting the water quantity of the printing and dyeing wastewater in the step 1) in an adjusting tank, wherein the COD of the printing and dyeing wastewater after neutralization is 1000-4000 mg/L, the chroma is 1000-12000, and the pH is 12.
9. The method for treating printing and dyeing wastewater based on ozone advanced oxidation technology as claimed in claim 1, characterized in that: the oxidation ditch in the step 3) is a rotary oxidation ditch, the first section of the oxidation ditch is an anaerobic section, the second section and the third section are both aeration sections, and the fourth section is a closing section.
10. The method for treating printing and dyeing wastewater based on ozone advanced oxidation technology as claimed in claim 9, characterized in that: in the step 3), the retention time of the wastewater in the first section is 10 hours, the total retention time of the wastewater in the second section and the third section is 20 hours, and the retention time of the wastewater in the fourth section is 5 hours.
CN202110122822.7A 2021-01-29 2021-01-29 Method for treating printing and dyeing wastewater based on ozone advanced oxidation technology Pending CN112624534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110122822.7A CN112624534A (en) 2021-01-29 2021-01-29 Method for treating printing and dyeing wastewater based on ozone advanced oxidation technology

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110122822.7A CN112624534A (en) 2021-01-29 2021-01-29 Method for treating printing and dyeing wastewater based on ozone advanced oxidation technology

Publications (1)

Publication Number Publication Date
CN112624534A true CN112624534A (en) 2021-04-09

Family

ID=75295100

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110122822.7A Pending CN112624534A (en) 2021-01-29 2021-01-29 Method for treating printing and dyeing wastewater based on ozone advanced oxidation technology

Country Status (1)

Country Link
CN (1) CN112624534A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105668929A (en) * 2016-03-04 2016-06-15 苏州苏沃特环境科技有限公司 Dyeing wastewater treatment and recycling technical system
CN106957132A (en) * 2017-04-07 2017-07-18 绍兴柯桥江滨水处理有限公司 A kind of swinging oxidation ditch process joint ozone and activated carbon handles the method and device of dyeing waste water
CN111847764A (en) * 2020-06-16 2020-10-30 北京恩菲环保股份有限公司 Method for treating printing and dyeing wastewater based on catalytic oxidation of ozone

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105668929A (en) * 2016-03-04 2016-06-15 苏州苏沃特环境科技有限公司 Dyeing wastewater treatment and recycling technical system
CN106957132A (en) * 2017-04-07 2017-07-18 绍兴柯桥江滨水处理有限公司 A kind of swinging oxidation ditch process joint ozone and activated carbon handles the method and device of dyeing waste water
CN111847764A (en) * 2020-06-16 2020-10-30 北京恩菲环保股份有限公司 Method for treating printing and dyeing wastewater based on catalytic oxidation of ozone

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
孙世兵主编: "《小城镇污水处理厂设计与运行管理指南》", 30 June 2014, 天津大学出版社 *

Similar Documents

Publication Publication Date Title
CN111018187A (en) Wastewater treatment process based on Fenton oxidation reaction
CN106554126B (en) Deep standard-reaching treatment method and system for reverse osmosis concentrated water
CN105693019A (en) System and method for treating wastewater containing nitrobenzene, aniline and cyclohexylamine
CN110981091B (en) Medical wastewater comprehensive treatment system and treatment method thereof
CN106396191A (en) Emergency treatment process and device of waste water with high COD and high NH3-N
CN109020070A (en) The processing method of anti-oxidant agent production waste water
CN105541005A (en) Degradation-resistant salt chemical wastewater deep treatment method
CN109502911A (en) A kind of sewage water treatment method
CN112047566A (en) Full-quantitative treatment system and method for landfill leachate
CN108862870A (en) A kind for the treatment of method of printing and dying wastewater
CN112624534A (en) Method for treating printing and dyeing wastewater based on ozone advanced oxidation technology
CN212315867U (en) Garbage leachate full-quantization treatment system
CN211644968U (en) Medical wastewater comprehensive treatment system
CN114133097A (en) Treatment process of pharmaceutical intermediate production wastewater
CN111847682A (en) Sewage treatment process
CN111762961A (en) Kitchen wastewater treatment method
CN114105396A (en) Process method for efficiently treating Lyocell short fiber wastewater
CN111470722A (en) Treatment method of rubber processing wastewater difficult to biodegrade
CN110627323B (en) Treatment method of wastewater containing para-ester
CN215924703U (en) Hazardous waste landfill leachate evaporation treatment system
CN220364457U (en) Sewage treatment system
CN216687835U (en) Wastewater treatment system for fine chemical production process
CN211814033U (en) Aerobic MBR (membrane bioreactor) and advanced treatment system for high-concentration organic wastewater
CN216550013U (en) Comprehensive wastewater treatment system for experimental building
CN213924402U (en) Pesticide chemical industry garden sewage degree of depth processing system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB03 Change of inventor or designer information
CB03 Change of inventor or designer information

Inventor after: Wang Libin

Inventor after: Liu Xinwang

Inventor after: Guo Zhongkai

Inventor after: Chen Zejun

Inventor after: Li Guofa

Inventor after: Xu Junhao

Inventor before: Wang Libin

Inventor before: Liu Xinwang

Inventor before: Guo Zhongkai

Inventor before: Chen Zejun

Inventor before: Li Guofa

Inventor before: Xu Junhao

RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20210409