CN111718070A - Printing ink wastewater treatment method and printing ink wastewater treatment system - Google Patents
Printing ink wastewater treatment method and printing ink wastewater treatment system Download PDFInfo
- Publication number
- CN111718070A CN111718070A CN202010607622.6A CN202010607622A CN111718070A CN 111718070 A CN111718070 A CN 111718070A CN 202010607622 A CN202010607622 A CN 202010607622A CN 111718070 A CN111718070 A CN 111718070A
- Authority
- CN
- China
- Prior art keywords
- treatment
- ink wastewater
- flocculation
- printing ink
- primary
- 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
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
- C02F1/5281—Installations for water purification using chemical agents
-
- 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
- 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
- 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
- C02F3/005—Combined electrochemical biological 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
- C02F3/30—Aerobic and anaerobic 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Landscapes
- 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 Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention provides an ink wastewater treatment method and an ink wastewater treatment system. The ink wastewater treatment method comprises the steps of adjusting the pH value of the ink wastewater; electrifying the ink wastewater after the pH value is adjusted, and adding a primary flocculating agent to perform primary flocculation treatment; and standing and settling the printing ink wastewater subjected to primary flocculation treatment, discharging precipitates in the printing ink wastewater through gravity precipitation, and discharging clear liquid on the top side of the printing ink wastewater or performing subsequent treatment. According to the printing ink wastewater treatment method and the printing ink wastewater treatment system, the colloid stability of the printing ink wastewater is destroyed by electrifying, the COD content is greatly reduced, and the printing ink wastewater is decolorized and heavy metal ions are deposited.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to an ink wastewater treatment method and an ink wastewater treatment system.
Background
During the printing process, a certain amount of ink waste water is generated due to the cleaning of the equipment. The water-based ink has the characteristics of extremely complex chemical components of waste water, high COD (chemical oxygen demand), high chroma and difficult biodegradation due to the ever-changing color of the water-based ink, and can cause serious pollution to a water environment once entering a water body.
The main pollutant components in the ink waste water are cyclic organic matter (coloring material) containing chromophoric group, acrylic acid series water-soluble resin (vehicle), alcohol group with large molecular weight or phenyl dispersant, and the water-soluble resin is the main component of waste water CODcr and occupies more than four fifths of the total. The pigment of the ink wastewater is various, and comprises both organic pigment and inorganic pigment; the organic pigment includes phthalocyanine pigments, lake pigments, azo pigments, nitroso pigments, heterocyclic pigments, and vat pigments, and the inorganic pigment includes carbon, salt, and oxide.
The printing ink wastewater can be simply divided into the category of printing and dyeing wastewater, and due to the low biodegradability of the printing ink wastewater, the light transmittance of a water body is reduced due to the high chromaticity, and the printing ink wastewater can seriously threaten the ecology of the water body. For this reason, it is necessary to take effective measures for treating the ink waste water.
Disclosure of Invention
In view of the above problems, the present invention is directed to solving the above-described problems. An object of the present invention is to provide an ink wastewater treatment method and an ink wastewater treatment system which solve the above problems.
A method for treating ink wastewater comprises the following steps:
adjusting the pH value of the printing ink wastewater;
electrifying the ink wastewater after the pH value is adjusted, and adding a primary flocculating agent to perform primary flocculation treatment;
and standing and settling the printing ink wastewater subjected to primary flocculation treatment, discharging precipitates in the printing ink wastewater through gravity precipitation, and discharging clear liquid on the top side of the printing ink wastewater or performing subsequent treatment.
Preferably, the primary flocculent is a microbial flocculent, and the primary flocculation treatment comprises:
primary treatment: 1.0-3.0g/L microbial flocculant, the rotation speed is 200.0-240.0rpm, and the microbial flocculant is quickly stirred for 10.0-15.0 min;
secondary treatment: 1.0-2.0g/L microbial flocculant, the rotating speed is 80.0-120.0rpm, and the microbial flocculant is quickly stirred for 5.0-10.0 min;
and (3) three times of treatment: 1.0-1.5g/L microbial flocculant, the rotating speed is 40.0-80.0rpm, and the microbial flocculant is quickly stirred for 5.0-8.0 min.
Preferably, the primary flocculation treatment further comprises:
adding a mixture of calcium ions and aluminum ions during primary flocculation treatment, wherein the ratio of the calcium ions to the aluminum ions is 3.0: 1.0.
preferably, the primary flocculation treatment further comprises:
and (3) measuring the pH value of the printing ink wastewater during primary flocculation treatment:
adjusting the pH value of the ink waste liquid to 4.0-6.0.
Preferably, the ink wastewater treatment method further comprises:
adding a secondary flocculating agent into the printing ink wastewater after the primary flocculation treatment for secondary flocculation treatment,
wherein the secondary flocculating agent is 4.0-12.0 mg/L polymeric flocculating agent, and the secondary flocculating treatment comprises the steps of rotating speed of 80.0-120.0rpm and stirring for 15.0-30.0 min.
Preferably, the method further comprises the following steps before adjusting the pH value of the ink wastewater:
inputting the printing ink wastewater into a grid pool to remove larger suspended matters;
the subsequent treatment comprises the following steps:
carrying out anaerobic treatment on the supernatant after standing and settling, wherein the anaerobic treatment comprises controlling the water temperature to be 30.0-40.0 ℃ and the retention time to be 4.0-10.0 hours;
and carrying out aerobic treatment on the clear liquid after the anaerobic treatment, wherein the aerobic treatment comprises adopting an oxidant H2O2, the temperature is 50-80 ℃, and the retention time is 1.0-4.0 hours.
And settling the supernatant after aerobic treatment for 4-6 hours, discharging the supernatant, and finishing the treatment of the ink wastewater.
An ink wastewater treatment system comprising:
the pH adjusting tank is used for adjusting the pH value of the printing ink wastewater;
the first flocculation reaction tank is communicated with the pH adjusting tank and is used for primary flocculation of the printing ink wastewater;
the sedimentation tank is communicated with the first flocculation reaction tank and is used for solid-liquid separation of the printing ink wastewater;
the printing ink wastewater treatment system also comprises a flocculation system;
the flocculation system comprises:
a power source;
the negative plates are arranged in the first flocculation reaction tank and are electrically connected with the power supply cathode;
and the anode plates are arranged in the first flocculation reaction tank, staggered with the cathode plates and electrically connected with the power supply anode.
Preferably, the ink wastewater treatment system further comprises:
and the second flocculation reaction tank is communicated with the first flocculation reaction tank and is used for secondary flocculation of the wastewater.
Preferably, the ink wastewater treatment system further comprises:
the grid tank is communicated with the pH adjusting tank and is used for removing large-particle suspended matters;
the anaerobic reaction tank is communicated with the sedimentation tank and is used for decomposing organic matters;
and the oxidation reaction tank is communicated with the anaerobic reaction tank and is used for further degrading organic matters.
And the final sedimentation tank is communicated with the oxidation reaction tank and is used for final treatment of the printing ink wastewater.
Preferably, the ink wastewater treatment system further comprises:
the pH value testing device is arranged in the pH adjusting tank and the first flocculation reaction tank;
the controller is electrically connected with the pH value testing device;
and the pH value adjusting device is electrically connected with the controller.
The printing ink wastewater treatment method and the printing ink wastewater treatment system have the following technical effects:
1. the method has the advantages of simple operation, low cost, energy conservation and environmental protection, greatly simplifies the process flow of ink wastewater treatment, effectively improves the ink wastewater treatment efficiency, and improves the economic benefit; the process has stable treatment effect, good decolorizing effect, high treatment efficiency, automatic control and convenient management;
2. the flocculation system can greatly reduce the COD content, decolor the printing ink wastewater and deposit heavy metal ions;
3. according to the invention, by means of stepwise addition of the microbial flocculant, the usage amount of the microbial flocculant can be reduced, the content of pollutants in the ink wastewater can be effectively reduced, and the treatment efficiency is improved;
4. the calcium ions and the aluminum ions are combined to promote the flocculation effect of the microbial flocculant;
5. the invention comprises secondary flocculation treatment of the polymeric flocculant, and further flocculation treatment, wherein substances which cannot be treated in the primary flocculation treatment are treated.
Other characteristic features and advantages of the invention will become apparent from the following description of exemplary embodiments, which is to be read in connection with the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. In the drawings, like reference numerals are used to indicate like elements. The drawings in the following description are directed to some, but not all embodiments of the invention. For a person skilled in the art, other figures can be derived from these figures without inventive effort.
FIG. 1 is a view schematically showing the structure of examples 1 to 5 of the ink wastewater treatment method of the present invention;
FIG. 2 is a view schematically showing the structure of examples 6 to 7 of the ink wastewater treatment method of the present invention;
FIG. 3 is a view schematically showing the structure of examples 8 to 9 of the ink wastewater treatment method of the present invention;
FIG. 4 is a view schematically showing the configuration of an ink wastewater treatment system according to the present invention;
fig. 5 is a view schematically showing the structure of the pH adjustment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The basic idea of the ink wastewater treatment method and the ink wastewater treatment system is as follows: by electrifying, the colloid stability of the printing ink wastewater is destroyed, the COD content is reduced, and the printing ink wastewater is favorable for decoloring, heavy metal ion deposition and the like.
The ink wastewater treatment method and the ink wastewater treatment system will be described in detail below with reference to the accompanying drawings.
One object of the present invention is: provided are an ink wastewater treatment system and an ink wastewater treatment method, as shown in FIG. 1: an ink wastewater treatment method may include:
and adjusting the pH value of the ink wastewater.
And electrifying the ink wastewater after the pH value is adjusted, and adding a primary flocculating agent to perform primary flocculation treatment.
And standing and settling the printing ink wastewater subjected to primary flocculation treatment, discharging precipitates in the printing ink wastewater through gravity precipitation, and discharging clear liquid on the top side of the printing ink wastewater or performing subsequent treatment.
The working principle is that after the pH value of the ink wastewater is adjusted by the pH adjusting tank, the ink wastewater is input into the first flocculation reaction tank, at the moment, the power supply in the flocculation system is electrified with the plurality of cathode plates and the plurality of anode plates, and the microbial flocculant is put in the flocculation system, so that the ink wastewater is input into the sedimentation tank to wait for further operation after the flocculation sedimentation. Wherein, the flocculation system can destroy metastable substances in the ink wastewater, greatly reduce the COD content, and is favorable for the decolorization of the ink wastewater and the deposition of heavy metal ions.
Specifically, the specific current intensity of the flocculation system is 0.5-1.5A, the reaction time is 20-40min, the electrode spacing is 8-15mm, and the pH value is 4.0-6.0.
Example 1:
the specific current intensity of the flocculation system is 0.5A, the reaction time is 20min, the electrode spacing is 8mm, and the pH value is 4.0.
Example 2:
the specific current intensity of the flocculation system is 1.5A, the reaction time is 40min, the electrode spacing is 15mm, and the pH value is 6.0.
Comparative example 1: blank comparative example (not energized, only the same type of flocculant was added).
Table 1: each unit is used for processing the ratio of the Cod content in the ink waste liquid after the ink waste water is processed to the Cod content in the original ink waste water; the ratio of the chroma of the ink waste liquid after the ink waste water is treated to the chroma of the original ink waste water.
In order to improve the flocculation effect, the primary flocculant is a microbial flocculant, and the primary flocculation treatment comprises the following steps:
primary treatment: 1.0-3.0g/L microbial flocculant, the rotation speed is 200.0-240.0rpm, and the rapid stirring is carried out for 10.0-15.0 min.
Secondary treatment: 1.0-2.0g/L microbial flocculant, the rotating speed is 80.0-120.0rpm, and the microbial flocculant is quickly stirred for 5.0-10.0 min.
And (3) three times of treatment: 1.0-1.5g/L microbial flocculant, the rotating speed is 40.0-80.0rpm, and the microbial flocculant is quickly stirred for 5.0-8.0 min.
Through the mode of adding the microbial flocculant in stages, the use amount of the microbial flocculant can be reduced, the content of pollutants in the printing ink wastewater is effectively reduced, the treatment efficiency is improved, and the microbial flocculant is electrified, so that on one hand, the colloid stability can be destroyed by electrifying a flocculation system, the combination of hydrogen bonds, ionic bonds and van der waals bonds of the microbial flocculant and the colloid is accelerated, on the other hand, the water temperature of the peripheral sides of the negative plate and the positive plate is higher, and the flocculation effect is further promoted.
Example 3:
the specific current intensity of the flocculation system is 0.5A, the reaction time is 20min, the electrode spacing is 8mm, and the pH value is 4.0.
Primary treatment: 3.0g/L microbial flocculant, rotating speed 240rpm, and stirring rapidly for 15 min.
Secondary treatment: 2.0g/L microbial flocculant, rotating speed of 120rpm, and rapidly stirring for 10 min.
And (3) three times of treatment: 1.5g/L microbial flocculant, rotating speed 80rpm, and stirring rapidly for 8 min.
Example 4:
the specific current intensity of the flocculation system is 0.5A, the reaction time is 20min, the electrode spacing is 8mm, and the pH value is 4.0.
Primary treatment: 1.0g/L microbial flocculant, the rotational speed of 200rpm, rapid stirring 10 min.
Secondary treatment: 1.0g/L microbial flocculant, rotating speed 80rpm, rapid stirring for 5 min.
And (3) three times of treatment: 1.0g/L microbial flocculant, rotating speed 40rpm, rapid stirring for 5 min.
Comparative example 2: blank comparative example (electrifying, adding flocculating agent of the same type, but not processing the flocculation system step by step, specific current intensity is 0.5A, reaction time is 20min, electrode distance is 8mm, pH value is 4.0).
Table 2: each unit is used for processing the ratio of the Cod content in the ink waste liquid after the ink waste water is processed to the Cod content in the original ink waste water; the ratio of the chroma of the ink waste liquid after the ink waste water is treated to the chroma of the original ink waste water.
In addition, in order to enhance the flocculation effect, the primary flocculation treatment may further include:
adding a mixture of calcium ions and aluminum ions during primary flocculation treatment, wherein the ratio of the calcium ions to the aluminum ions is 3: 1.
example 5: the remaining parameters were the same as in example 4, with the addition of a mixture of calcium and aluminium ions.
Comparative example 3:
blank comparative example (the remaining parameters were the same as in example 4, but no mixture of calcium and aluminium ions was added).
Table 3: each unit is used for processing the ratio of the Cod content in the ink waste liquid after the ink waste water is processed to the Cod content in the original ink waste water; the ratio of the chroma of the ink waste liquid after the ink waste water is treated to the chroma of the original ink waste water.
Calcium ions can promote the flocculation effect of the microbial flocculant, aluminum ions can promote the flocculation effect of the microbial flocculant at low concentration, and the calcium ions and the aluminum ions have a competition effect, so that research shows that when the ratio of the calcium ions to the aluminum ions is 3: 1 the best flocculation effect.
In order to ensure the optimal flocculation effect, the primary flocculation treatment can further comprise:
and (4) measuring the pH value of the ink waste liquid in the primary flocculation treatment.
Adjusting the pH value of the ink waste liquid to 4.0-6.0.
The pH value directly influences the charged state of the polymer of the flocculating agent, and the flocculating effect is best when the pH value is 4.0-6.0.
In order to further improve the wastewater treatment effect, as shown in fig. 2: the ink wastewater treatment method further comprises the following steps:
adding a secondary flocculating agent into the printing ink wastewater after the primary flocculation treatment for secondary flocculation treatment,
wherein the secondary flocculating agent is 4.0-12.0 mg/L polymeric flocculating agent, and the secondary flocculating treatment comprises the steps of rotating speed of 80-120rpm and stirring for 15-30 min.
Example 6: the remaining parameters were the same as in example 5.
Performing secondary flocculation treatment, wherein the secondary flocculant is 4.0mg/L polymeric flocculant, and the secondary flocculation treatment comprises rotating speed of 80rpm and stirring for 15 min.
Example 7: the remaining parameters were the same as in example 5.
Performing secondary flocculation treatment, wherein the secondary flocculant is a polymeric flocculant of 12.0mg/L, the secondary flocculation treatment comprises rotating speed of 120rpm, and stirring for 30 min.
Table 4: each unit is used for processing the ratio of the Cod content in the ink waste liquid after the ink waste water is processed to the Cod content in the original ink waste water; the ratio of the chroma of the ink waste liquid after the ink waste water is treated to the chroma of the original ink waste water.
Further flocculation treatment is carried out by using a polymeric flocculant, and substances which cannot be treated in primary flocculation are treated.
Specifically, the polymeric flocculant is any one or a combination of sodium polyacrylate, polyacrylamide, polystyrene sulfonate and polyethylene oxide.
As shown in fig. 3: in practical use, before adjusting the pH of the ink wastewater, the method may further include:
inputting the printing ink wastewater into a grid pool to remove larger suspended matters;
the subsequent processing may include:
and (3) carrying out anaerobic treatment on the supernatant after standing and settling, wherein the anaerobic treatment comprises controlling the water temperature to be 30-40 ℃, and the retention time to be 4.0-10.0 hours.
And carrying out aerobic treatment on the clear liquid after the anaerobic treatment, wherein the aerobic treatment comprises adopting an oxidant H2O2, the temperature is 50-80 ℃, and the retention time is 1.0-4.0 hours.
The anaerobic treatment is used for decoloring the printing ink wastewater and degrading organic matters under the action of anaerobic microorganisms; aerobic treatment further destroys chromophoric groups and molecular structures of molecules in the ink wastewater, thereby achieving the purpose of decoloring.
And settling the supernatant after aerobic treatment for 4-6 hours, discharging the supernatant, and finishing the treatment of the ink wastewater.
Example 8: the remaining parameters were the same as in example 7.
The anaerobic treatment comprises controlling the water temperature to be above 30 ℃ and the retention time to be 4.0 hours.
And (3) carrying out aerobic treatment on the clear liquid after the anaerobic treatment, wherein the aerobic treatment comprises adopting an oxidant H2O2, the temperature is 50 ℃, and the retention time is 1.0 hour.
And (5) discharging the supernatant after the aerobic treatment when the precipitation time of the supernatant is 4.0, and finishing the treatment of the ink wastewater.
Example 9: the remaining parameters were the same as in example 7.
The anaerobic treatment comprises controlling the water temperature to be 40 ℃ and the retention time to be 10.0 hours.
And (3) carrying out aerobic treatment on the clear liquid after the anaerobic treatment, wherein the aerobic treatment comprises the step of adopting an oxidant H2O2, the temperature is 80 ℃, and the retention time is 4.0 hours.
And settling the supernatant after the aerobic treatment for 6.0 hours, discharging the supernatant, and finishing the treatment of the ink wastewater.
Table 5: each unit is used for processing the ratio of the Cod content in the ink waste liquid after the ink waste water is processed to the Cod content in the original ink waste water; the ratio of the chroma of the ink waste liquid after the ink waste water is treated to the chroma of the original ink waste water.
As shown in fig. 4: an ink wastewater treatment system can include:
and the pH adjusting tank is used for adjusting the pH value of the printing ink wastewater.
And the first flocculation reaction tank is communicated with the pH adjusting tank and is used for primary flocculation of the printing ink wastewater.
And the sedimentation tank is communicated with the first flocculation reaction tank and is used for solid-liquid separation of the printing ink wastewater.
The printing ink wastewater treatment system also comprises a flocculation system;
the flocculation system may comprise:
a power source;
and the negative plates are arranged in the first flocculation reaction tank and are electrically connected with the power supply cathode.
And the anode plates are arranged in the first flocculation reaction tank, staggered with the cathode plates and electrically connected with the power supply anode.
The ink wastewater treatment system may further include:
and the second flocculation reaction tank is communicated with the first flocculation reaction tank and is used for secondary flocculation of the wastewater.
The ink wastewater treatment system may further include:
and the grid tank is communicated with the pH adjusting tank and is used for removing large-particle suspended matters.
And the anaerobic reaction tank is communicated with the sedimentation tank and is used for decomposing organic matters.
And the oxidation reaction tank is communicated with the anaerobic reaction tank and is used for further degrading organic matters.
And the final sedimentation tank is communicated with the oxidation reaction tank and is used for final treatment of the printing ink wastewater.
As shown in fig. 5, the ink wastewater treatment system may further include:
and the pH value testing device is arranged in the pH adjusting tank and in the first flocculation reaction tank.
And the controller is electrically connected with the pH value testing device.
And the pH value adjusting device is electrically connected with the controller.
The invention discloses a printing ink wastewater treatment method and a printing ink wastewater treatment system, wherein the printing ink wastewater treatment method comprises the following steps:
the method is simple to operate, low in cost, energy-saving and environment-friendly, greatly simplifies the process flow of ink wastewater treatment, effectively improves the ink wastewater treatment efficiency, and improves the economic benefit; the process has the advantages of stable treatment effect, good decolorizing effect, high treatment efficiency, automatic control and convenient management.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of additional like elements in the article or device comprising the element.
The above embodiments are merely to illustrate the technical solutions of the present invention and not to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments. It will be understood by those skilled in the art that various modifications and equivalent arrangements may be made without departing from the spirit and scope of the present invention and it should be understood that the present invention is to be covered by the appended claims.
Claims (10)
1. A method for treating printing ink wastewater is characterized by comprising the following steps:
adjusting the pH value of the printing ink wastewater;
electrifying the ink wastewater after the pH value is adjusted, and adding a primary flocculating agent to perform primary flocculation treatment;
and standing and settling the printing ink wastewater subjected to primary flocculation treatment, discharging precipitates in the printing ink wastewater through gravity precipitation, and discharging clear liquid on the top side of the printing ink wastewater or performing subsequent treatment.
2. The ink wastewater treatment method according to claim 1,
the primary flocculant is a microbial flocculant, and the primary flocculation treatment comprises the following steps:
primary treatment: 1.0-3.0g/L microbial flocculant, the rotation speed is 200.0-240.0rpm, and the microbial flocculant is quickly stirred for 10.0-15.0 min;
secondary treatment: 1.0-2.0g/L microbial flocculant, the rotating speed is 80.0-120.0rpm, and the microbial flocculant is quickly stirred for 5.0-10.0 min;
and (3) three times of treatment: 1.0-1.5g/L microbial flocculant, the rotating speed is 40.0-80.0rpm, and the microbial flocculant is quickly stirred for 5.0-8.0 min.
3. The ink wastewater treatment method according to claim 1, wherein the primary flocculation treatment further comprises:
adding a mixture of calcium ions and aluminum ions during the primary flocculation treatment, wherein the ratio of the calcium ions to the aluminum ions is 3.0: 1.0.
4. the ink wastewater treatment method according to claim 1, wherein the primary flocculation treatment further comprises:
and (3) measuring the pH value of the printing ink wastewater during the primary flocculation treatment:
adjusting the pH value of the ink waste liquid to 4.0-6.0.
5. The ink wastewater treatment method according to claim 1, characterized by further comprising:
adding a secondary flocculating agent into the printing ink wastewater after the primary flocculation treatment for secondary flocculation treatment,
wherein the secondary flocculating agent is 4.0-12.0 mg/L polymeric flocculating agent, and the secondary flocculating treatment comprises the steps of rotating at 80.0-120.0rpm and stirring for 15.0-30.0 min.
6. The ink wastewater treatment method according to claim 1, further comprising, before the adjusting the pH of the ink wastewater:
inputting the printing ink wastewater into a grid pool to remove larger suspended matters;
the subsequent processing further comprises:
carrying out anaerobic treatment on the supernatant after standing and settling, wherein the anaerobic treatment comprises controlling the water temperature to be 30.0-40.0 ℃ and the retention time to be 4.0-10.0 hours;
carrying out aerobic treatment on the clear liquid after the anaerobic treatment, wherein the aerobic treatment comprises adopting an oxidant H2O2, the temperature is 50-80 ℃, and the retention time is 1.0-4.0 hours;
and precipitating the supernatant after aerobic treatment for 4.0-6.0 hours, discharging the supernatant, and finishing the treatment of the ink wastewater.
7. An ink wastewater treatment system, comprising:
the pH adjusting tank is used for adjusting the pH value of the printing ink wastewater;
the first flocculation reaction tank is communicated with the pH adjusting tank and is used for primary flocculation of the printing ink wastewater;
the sedimentation tank is communicated with the first flocculation reaction tank and is used for solid-liquid separation of the printing ink wastewater;
the printing ink wastewater treatment system also comprises a flocculation system;
the flocculation system comprises:
a power source;
the negative plates are arranged in the first flocculation reaction tank and are electrically connected with the power supply cathode;
and the plurality of anode plates are arranged in the first flocculation reaction tank, staggered with the plurality of cathode plates and electrically connected with the power supply anode.
8. The ink wastewater treatment system according to claim 7, further comprising:
and the second flocculation reaction tank is communicated with the first flocculation reaction tank and is used for secondary flocculation of the wastewater.
9. The ink wastewater treatment system according to claim 7, further comprising:
the grating tank is communicated with the pH adjusting tank and is used for removing large-particle suspended matters;
the anaerobic reaction tank is communicated with the sedimentation tank and is used for decomposing organic matters;
the oxidation reaction tank is communicated with the anaerobic reaction tank and is used for further degrading organic matters;
and the final sedimentation tank is communicated with the oxidation reaction tank and is used for final treatment of the printing ink wastewater.
10. The ink wastewater treatment system according to claim 7, further comprising:
the pH value testing device is arranged in the pH adjusting tank and in the first flocculation reaction tank;
the controller is electrically connected with the pH value testing device;
and the pH value adjusting device is electrically connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010607622.6A CN111718070A (en) | 2020-06-29 | 2020-06-29 | Printing ink wastewater treatment method and printing ink wastewater treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010607622.6A CN111718070A (en) | 2020-06-29 | 2020-06-29 | Printing ink wastewater treatment method and printing ink wastewater treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111718070A true CN111718070A (en) | 2020-09-29 |
Family
ID=72570105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010607622.6A Pending CN111718070A (en) | 2020-06-29 | 2020-06-29 | Printing ink wastewater treatment method and printing ink wastewater treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111718070A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1097928A (en) * | 1977-12-22 | 1981-03-24 | Rene Gautier | Improved floculation process for the separation of hard to filter liquid/solid mixes through filtration |
| CN102503049A (en) * | 2011-11-24 | 2012-06-20 | 苏州科技学院 | Process for treating recalcitrant printing and dyeing wastewater by using reactor |
| CN203229442U (en) * | 2013-04-11 | 2013-10-09 | 苏州南风优联环保工程有限公司 | Water-based ink wastewater treatment device |
| CN203959951U (en) * | 2014-04-25 | 2014-11-26 | 正业包装（中山）有限公司 | A kind of printing-ink wastewater treatment and recovery system |
| CN107721070A (en) * | 2017-10-25 | 2018-02-23 | 河北德龙环境工程股份有限公司 | A kind of handling process of coating material production waste water |
-
2020
- 2020-06-29 CN CN202010607622.6A patent/CN111718070A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1097928A (en) * | 1977-12-22 | 1981-03-24 | Rene Gautier | Improved floculation process for the separation of hard to filter liquid/solid mixes through filtration |
| CN102503049A (en) * | 2011-11-24 | 2012-06-20 | 苏州科技学院 | Process for treating recalcitrant printing and dyeing wastewater by using reactor |
| CN203229442U (en) * | 2013-04-11 | 2013-10-09 | 苏州南风优联环保工程有限公司 | Water-based ink wastewater treatment device |
| CN203959951U (en) * | 2014-04-25 | 2014-11-26 | 正业包装（中山）有限公司 | A kind of printing-ink wastewater treatment and recovery system |
| CN107721070A (en) * | 2017-10-25 | 2018-02-23 | 河北德龙环境工程股份有限公司 | A kind of handling process of coating material production waste water |
Non-Patent Citations (3)
| Title |
|---|
| 刁治民等: "《农业微生物工程学》", 31 December 2007, 青海人民出版社 * |
| 王春梅等: "高分子絮凝剂在印染废水处理中的应用", 《南通工学院学报》 * |
| 王雷: "外加电场辅助煤泥水沉降试验研究", 《中国优秀博硕士学位论文全文数据库(硕士)工程科技Ⅰ辑》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103304054B (en) | A kind for the treatment of process of dyeing waste water | |
| CN101269863B (en) | Apparatus and method for removing phosphor and organic matter in sewage water with electric flocculation membrane bioreactor | |
| CN102701496A (en) | Method and process for treating high-concentration organic wastewater difficult to degrade | |
| CN102583879A (en) | High-concentration integrated chemical organic wastewater treatment process | |
| CN104649521B (en) | The printing-dyeing waste water treatment process of circulation in a kind of muddy water strengthening | |
| CN101891319B (en) | Alkaline printing and dyeing wastewater materialization pretreatment method and system | |
| CN104628215A (en) | Environmentally friendly technology for treating printing and dyeing wastewater through contact oxidation process | |
| CN101891324A (en) | Wastewater electrolytic treatment system | |
| CN104787864A (en) | Preparation method of composite decoloring flocculant for printing and dyeing wastewater treatment | |
| CN102020384B (en) | Method for handling organic wastewater based on Fenton reaction | |
| CN111410362A (en) | Method for treating coffee primary processing wastewater | |
| KR102375244B1 (en) | Method for removing color from acid dyes sewage water | |
| CN202829768U (en) | Device for treating printing and dyeing wastewater through combination of microwave and electric flocculation | |
| CN101723489A (en) | Solar photo/electric-Fenton treatment method for H acid wastewater of dye immediate | |
| CN111718070A (en) | Printing ink wastewater treatment method and printing ink wastewater treatment system | |
| CN104773924B (en) | Apparatus and method for enhancing biodegradation of dye wastewater with micro-current | |
| CN108147576A (en) | A kind of dyeing waste water depth decolorizing process technique system | |
| CN103304073A (en) | Method for treating active scarlet BES (Biological Electrochemical System) dye wastewater by using intermittent pulsed current electric flocculation technology | |
| CN105905994A (en) | Novel method of utilizing process of conversion between chemical energy and electric energy of printing and dyeing wastewater to treat same | |
| CN201785224U (en) | Waste water electrolysis treatment system | |
| CN109987745A (en) | A kind of processing method of printed circuit board sewage | |
| CN207079100U (en) | A kind of combined treatment process system of waste water containing various heavy | |
| CN216550013U (en) | Comprehensive wastewater treatment system for experimental building | |
| CN210140521U (en) | Printing industry effluent disposal system | |
| CN107673522A (en) | A kind of coked waste water deep treatment method |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200929 |