CN111499115A - High-concentration printing ink wastewater treatment process - Google Patents
High-concentration printing ink wastewater treatment process Download PDFInfo
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- CN111499115A CN111499115A CN202010386237.3A CN202010386237A CN111499115A CN 111499115 A CN111499115 A CN 111499115A CN 202010386237 A CN202010386237 A CN 202010386237A CN 111499115 A CN111499115 A CN 111499115A
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- ink wastewater
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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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
- 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
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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
- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
-
- 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
Abstract
The invention relates to a high-concentration printing ink wastewater treatment system and a treatment process thereof, which comprises an adjusting reaction tank, a water collecting tank, an air flotation tank, a hydrolysis acidification tank, a contact oxidation tank and a secondary sedimentation tank which are sequentially connected by a pipeline, wherein an air stirring mechanism is arranged in the adjusting reaction tank, a sludge dehydrator is arranged between the adjusting reaction tank and the water collecting tank, a mechanical stirring mechanism is arranged in the air flotation tank, a combined filler and an air stirring mechanism are arranged in the hydrolysis acidification tank, a variable microporous aerator, a combined filler and a nitrifying liquid reflux device are arranged in the contact oxidation tank, the secondary sedimentation tank adopts a vertical flow type sedimentation tank, a mechanical stirring device and a sludge reflux mechanism are arranged in the secondary sedimentation tank, the water quality after treatment is far superior to the emission standard requirement through multiple treatments of the adjusting reaction tank, the water collecting tank, the air flotation tank, the hydrolysis acidification tank, the contact oxidation tank and the secondary sedimentation tank, does not need manual operation, and has large COD concentration range and better applicability.
Description
Technical Field
The invention belongs to the technical field of printing wastewater treatment, and particularly relates to a high-concentration printing ink wastewater treatment process.
Background
In recent years, the ink industry is developed rapidly, high-concentration ink wastewater is generated in the printing production process, the wastewater is discharged intermittently, the water quality and the water quantity change greatly along with time, and the treatment difficulty is high. At present, the research and application of printing ink wastewater treatment mainly focus on chemical coagulation, electrolysis, coagulation air flotation, biochemical treatment and the like, and the treatment process is complex and low in efficiency.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to solve the problems of complex treatment process and low efficiency of the existing printing wastewater treatment equipment.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention relates to a high-concentration printing ink wastewater treatment system which comprises an adjusting reaction tank, a water collecting tank, an air flotation tank, a hydrolysis acidification tank, a contact oxidation tank and a secondary sedimentation tank, wherein the adjusting reaction tank, the water collecting tank, the air flotation tank, the hydrolysis acidification tank, the contact oxidation tank and the secondary sedimentation tank are sequentially connected through a pipeline, an air stirring mechanism is arranged in the adjusting reaction tank, a sludge dewatering machine is arranged between the adjusting reaction tank and the water collecting tank, a mechanical stirring mechanism is arranged in the air flotation tank, a combined filler and an air stirring mechanism are arranged in the hydrolysis acidification tank, a variable microporous aerator, a combined filler and a nitrifying liquid reflux device are arranged in the contact oxidation tank, and the secondary sedimentation tank adopts a.
The treatment process of the high-concentration printing ink wastewater adopts the treatment system, and comprises the following steps:
s100, pretreating, namely conveying the printing ink wastewater into a regulation reaction tank through a pipeline, opening an air stirring mechanism, adding a decolorizing agent, reacting for 15min, adding a coagulant, reacting for 10min again, adding a flocculating agent, reacting for 10min, and closing the air stirring mechanism;
s200, primary separation, namely dehydrating the mud-water mixture treated in the step S100 by a sludge dehydrator, and conveying dehydrated filtrate to a water collecting tank;
s300, secondary treatment, namely conveying the liquid in the water collecting tank into an air floatation tank, starting a mechanical stirring mechanism of the air floatation tank, adding a coagulant and a flocculating agent, and performing sludge-water separation after reaction and air floatation;
s400, carrying out microbial treatment, namely conveying the liquid obtained in the step S300 to a hydrolysis acidification pool;
s500, carrying out oxidation treatment, namely conveying the liquid treated in the step S400 into a contact oxidation tank, refluxing a nitrifying liquid at the tail end in the contact oxidation tank to a hydrolysis acidification tank, and automatically flowing effluent to a secondary sedimentation tank;
s600, performing tertiary treatment, starting a mechanical stirring device in the secondary sedimentation tank, adding a coagulant and a flocculant, performing sludge-water separation in a sedimentation area after reaction, decoloring and discharging effluent water by sodium hypochlorite, and refluxing sludge to a hydrolysis acidification tank and a contact oxidation tank by a reflux pump.
Preferably, the decoloring agent in the step S100 is calcium hydroxide with a concentration of 10%, and the adding amount of the decoloring agent is 3kg/m3。
Preferably, the coagulant in step S100 is PAC with a concentration of 10%, and the PAC is added in an amount of 200g/m3(ii) a The flocculant is a PAM solution with the concentration of 1 per mill, and the addition amount of the PAM is 30g/m3。
Preferably, the sludge dewatering machine in step S200 is a chamber filter press dewatering mechanism.
Preferably, the air flotation tank in the step S300 is in the form of dissolved air flotation.
Preferably, the hydrolysis acidification tank of the step S400 is arranged in a plug flow manner, and is provided with an air stirring mechanism and a combined filler.
Preferably, the contact oxidation tank in the step S500 is arranged in a plug-flow manner, and is provided with a microporous aeration mechanism, a combined filler and a nitrified liquid reflux device.
Preferably, the sedimentation tank of step S600 is a vertical sedimentation tank, and is provided with a mechanical stirring device, a sludge reflux device, and a sodium hypochlorite decoloring device.
Preferably, at least two regulating reaction tanks are provided in the step S100, and the at least two regulating reaction tanks alternately operate.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
the invention relates to a high-concentration printing ink wastewater treatment system and a treatment process thereof, which comprises an adjusting reaction tank, a water collecting tank, an air flotation tank, a hydrolysis acidification tank, a contact oxidation tank and a secondary sedimentation tank which are sequentially connected by a pipeline, wherein an air stirring mechanism is arranged in the adjusting reaction tank, a sludge dehydrator is arranged between the adjusting reaction tank and the water collecting tank, a mechanical stirring mechanism is arranged in the air flotation tank, a combined filler and an air stirring mechanism are arranged in the hydrolysis acidification tank, a variable microporous aerator, a combined filler and a nitrifying liquid reflux device are arranged in the contact oxidation tank, the secondary sedimentation tank adopts a vertical flow type sedimentation tank, a mechanical stirring device and a sludge reflux mechanism are arranged in the secondary sedimentation tank, the water quality after treatment is far superior to the emission standard requirement through multiple treatments of the adjusting reaction tank, the water collecting tank, the air flotation tank, the hydrolysis acidification tank, the contact oxidation tank and the secondary sedimentation tank, does not need manual operation, and has large COD concentration range and better applicability.
Detailed Description
The present invention will now be described more fully hereinafter with reference to examples for the purpose of facilitating an understanding of the invention, but the invention may be embodied in many different forms and is not limited to the examples described herein, which are provided for the purpose of providing a more thorough disclosure of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Example 1
The high-concentration printing ink wastewater treatment system comprises an adjusting reaction tank, a water collecting tank, an air flotation tank, a hydrolysis acidification tank, a contact oxidation tank and a secondary sedimentation tank which are sequentially connected through a pipeline, wherein an air stirring mechanism is arranged in the adjusting reaction tank, a sludge dewatering machine is arranged between the adjusting reaction tank and the water collecting tank, a mechanical stirring mechanism is arranged in the air flotation tank, a combined filler and an air stirring mechanism are arranged in the hydrolysis acidification tank, the contact oxidation tank is provided with a variable microporous aerator, a combined filler and a nitrified liquid reflux device, the secondary sedimentation tank adopts a vertical flow type sedimentation tank and is provided with a mechanical stirring device and a sludge reflux mechanism, the water quality after treatment is far superior to the emission standard requirement through multiple treatments of the adjusting reaction tank, the water collecting tank, the air flotation tank, the hydrolysis acidification tank, the contact oxidation tank and the secondary sedimentation tank, and simultaneously, the treatment process is completely carried out by adopting mechanical, does not need manual operation, can treat COD concentration from 5000ppm to 50000ppm and can realize stable standard reaching, and has better applicability.
Example 2
The treatment process of the high-concentration printing ink wastewater adopts the treatment system, and comprises the following steps:
100. pre-treating, namely conveying the printing ink wastewater into a regulating reaction tank through a pipeline, opening an air stirring mechanism, adding a decolorizing agent, reacting for 15min, adding a coagulant, reacting for 10min again, finally adding a flocculating agent, reacting for 10min, and closing the air stirring mechanism;
s200, primary separation, namely dehydrating the mud-water mixture treated in the step S100 by a sludge dehydrator, and conveying dehydrated filtrate to a water collecting tank;
s300, secondary treatment, namely conveying the liquid in the water collecting tank into an air floatation tank, starting a mechanical stirring mechanism of the air floatation tank, adding a coagulant and a flocculating agent, and performing sludge-water separation after reaction and air floatation;
s400, carrying out microbial treatment, namely conveying the liquid obtained in the step S300 to a hydrolysis acidification pool;
s500, carrying out oxidation treatment, namely conveying the liquid treated in the step S400 into a contact oxidation tank, refluxing a nitrifying liquid at the tail end in the contact oxidation tank to a hydrolysis acidification tank, and automatically flowing effluent to a secondary sedimentation tank;
s600, performing tertiary treatment, starting a mechanical stirring device in the secondary sedimentation tank, adding a coagulant and a flocculant, performing sludge-water separation in a sedimentation area after reaction, decoloring and discharging effluent water by sodium hypochlorite, and refluxing sludge to a hydrolysis acidification tank and a contact oxidation tank by a reflux pump.
The decolorizing agent in the step S100 is calcium hydroxide with the concentration of 10 percent, and the adding amount of the decolorizing agent is 3kg/m3. The decolorant calcium hydroxide has the main functions of separating out and condensing the color developing matter in the waste water and further eliminating the color of the waste water.
The coagulant in step S100 is PAC with the concentration of 10 percent, and the addition amount of the PAC is 200g/m3(ii) a The flocculant is a PAM solution with the concentration of 1 per mill, and the addition amount of the PAM is 30g/m3. The coagulant PAC can flocculate suspended matters and colloids in water into small particle flocs through the actions of compressing double electric layers, adsorbing electric neutralization and the like; the flocculant PAM is a macromolecular organic matter, and further coagulates small particle flocs to form larger-particle alum-flower-shaped substances mainly through an adsorption and bridging effect, so that mud-water separation is facilitated.
The sludge dewatering machine in the step S200 is a box filter press dewatering mechanism.
The air flotation tank in the step S300 adopts a dissolved air flotation mode, the dissolved air flotation is the most widely used air flotation mode, the load is high, the occupied area is small, the particle size of formed micro bubbles is small, and the air flotation effect is good.
The hydrolysis acidification tank in the step S400 is arranged in a plug flow manner, and is provided with an air stirring mechanism and a combined filler, wherein the combined filler adopts a PVC material as a framework, and the hydroformylation vinylon is used as a biological carrier, so that microbial flora can be well attached, and the biochemical treatment effect is stabilized.
The contact oxidation tank of the step S500 is arranged in a plug flow manner and is provided with a microporous aerator, a combined filler and a nitrifying liquid reflux device. The air sent by the blower is sprayed out through the tiny air holes at the top of the micropore aerator to form tiny air bubbles, so that oxygen in the air is dissolved into water, oxygen is provided for aerobic microorganisms, and the oxygen utilization rate is up to 15% -30%.
The sedimentation tank of the step S600 is a vertical flow sedimentation tank and is provided with a mechanical stirring device, a sludge reflux device and a sodium hypochlorite decoloring device.
And at least two regulating reaction tanks in the step S100 are arranged, and the at least two regulating reaction tanks alternately run.
The above-mentioned embodiments only express a certain implementation mode of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention; it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which are within the protection scope of the present invention; therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a high concentration printing ink effluent disposal system which characterized in that: include regulation retort, catch basin, air supporting pond, hydrolysis-acidification pool, contact oxidation pond and two heavy ponds that connect gradually through the pipeline, be equipped with air stirring mechanism in the regulation retort, be equipped with the sludge dewaterer between regulation retort and the catch basin, be equipped with mechanical stirring mechanism in the air supporting pond, be equipped with combination filler and air stirring mechanism in the hydrolysis-acidification pool, the contact oxidation pond is equipped with variable micropore aerator, combination filler and nitrifies liquid reflux unit, two heavy ponds adopt vertical flow formula sedimentation tank, are equipped with mechanical stirring device and mud reflux mechanism.
2. The high-concentration printing ink wastewater treatment process is characterized by comprising the following steps of:
100. pre-treating, namely conveying the printing ink wastewater into a regulating reaction tank through a pipeline, opening an air stirring mechanism, adding a decolorizing agent, reacting for 15min, adding a coagulant, reacting for 10min again, finally adding a flocculating agent, reacting for 10min, and closing the air stirring mechanism;
s200, primary separation, namely dehydrating the mud-water mixture treated in the step S100 by a sludge dehydrator, and conveying dehydrated filtrate to a water collecting tank;
s300, secondary treatment, namely conveying the liquid in the water collecting tank into an air floatation tank, starting a mechanical stirring mechanism of the air floatation tank, adding a coagulant and a flocculating agent, and performing sludge-water separation after reaction and air floatation;
s400, carrying out microbial treatment, namely conveying the liquid obtained in the step S300 to a hydrolysis acidification pool;
s500, carrying out oxidation treatment, namely conveying the liquid treated in the step S400 into a contact oxidation tank, refluxing a nitrifying liquid at the tail end in the contact oxidation tank to a hydrolysis acidification tank, and automatically flowing effluent to a secondary sedimentation tank;
s600, performing tertiary treatment, starting a mechanical stirring device in the secondary sedimentation tank, adding a coagulant and a flocculant, performing sludge-water separation in a sedimentation area after reaction, decoloring and discharging effluent water by sodium hypochlorite, and refluxing sludge to a hydrolysis acidification tank and a contact oxidation tank by a reflux pump.
3. The process for treating high-concentration printing ink wastewater as claimed in claim 2, wherein: the decolorant in the step S100 is calcium hydroxide with the concentration of 10 percent, and the adding amount of the decolorant is 3kg/m3。
4. The process for treating high-concentration printing ink wastewater as claimed in claim 2, wherein: the coagulant in the step S100 is PAC with the concentration of 10 percent, and the addition amount of the PAC is 200g/m3(ii) a The flocculant is a PAM solution with the concentration of 1 per mill, and the addition amount of the PAM is 30g/m3。
5. The process for treating high-concentration printing ink wastewater as claimed in claim 2, wherein: the sludge dewatering machine in the step S200 is a box filter press dewatering mechanism.
6. The process for treating high-concentration printing ink wastewater as claimed in claim 2, wherein: the air flotation tank in the step S300 adopts a dissolved air flotation mode.
7. The process for treating high-concentration printing ink wastewater as claimed in claim 2, wherein: the hydrolysis acidification tank of the step S400 is arranged in a plug flow manner and is provided with an air stirring mechanism and a combined filler.
8. The process for treating high-concentration printing ink wastewater as claimed in claim 2, wherein: the contact oxidation tank of the step S500 is arranged in a plug flow manner and is provided with a micropore aeration mechanism, a combined filler and a nitrified liquid reflux device.
9. The process for treating high-concentration printing ink wastewater as claimed in claim 2, wherein: and the sedimentation tank of the step S600 is a vertical flow sedimentation tank and is provided with a mechanical stirring device, a sludge reflux device and a sodium hypochlorite decoloring device.
10. The process for treating high-concentration printing ink wastewater as claimed in claim 2, wherein: and at least two adjusting reaction tanks are arranged in the step S100, and the at least two adjusting reaction tanks alternately operate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010386237.3A CN111499115A (en) | 2020-05-09 | 2020-05-09 | High-concentration printing ink wastewater treatment process |
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| CN202010386237.3A CN111499115A (en) | 2020-05-09 | 2020-05-09 | High-concentration printing ink wastewater treatment process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111943442A (en) * | 2020-08-18 | 2020-11-17 | 苏州天昌包装材料科技股份有限公司 | Printing ink printing wastewater treatment device and application method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202988891U (en) * | 2013-01-12 | 2013-06-12 | 珠海正业包装有限公司 | Printing ink wastewater treatment system |
| CN103159382A (en) * | 2013-04-11 | 2013-06-19 | 苏州南风优联环保工程有限公司 | Water-based ink wastewater treatment technique |
| CN108911423A (en) * | 2018-08-22 | 2018-11-30 | 苏州富特尼水务工程有限公司 | Aqueous ink waste water disposal process |
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2020
- 2020-05-09 CN CN202010386237.3A patent/CN111499115A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202988891U (en) * | 2013-01-12 | 2013-06-12 | 珠海正业包装有限公司 | Printing ink wastewater treatment system |
| CN103159382A (en) * | 2013-04-11 | 2013-06-19 | 苏州南风优联环保工程有限公司 | Water-based ink wastewater treatment technique |
| CN108911423A (en) * | 2018-08-22 | 2018-11-30 | 苏州富特尼水务工程有限公司 | Aqueous ink waste water disposal process |
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| 张启文 主编: "《新型洁净煤技术创新与实践论文集》", 31 December 2012 * |
| 张统 主编: "《污水处理工艺及工程方案设计》", 31 May 2000 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111943442A (en) * | 2020-08-18 | 2020-11-17 | 苏州天昌包装材料科技股份有限公司 | Printing ink printing wastewater treatment device and application method thereof |
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Application publication date: 20200807 |