CN110590082A - Textile sewage treatment method - Google Patents
Textile sewage treatment method Download PDFInfo
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- CN110590082A CN110590082A CN201911008525.9A CN201911008525A CN110590082A CN 110590082 A CN110590082 A CN 110590082A CN 201911008525 A CN201911008525 A CN 201911008525A CN 110590082 A CN110590082 A CN 110590082A
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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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
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
- C02F1/763—Devices for the addition of such compounds in gaseous form
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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
- C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
- C02F2003/003—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms using activated carbon or the like
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic 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
- 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
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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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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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
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
-
- 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
- C02F3/302—Nitrification and denitrification treatment
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention discloses a textile sewage treatment method, which comprises the following steps: filtering, adjusting water quality, anaerobic treatment, aerobic treatment, anoxic treatment, biological contact oxidation treatment, flocculation precipitation, air flotation, centrifugal separation and disinfection treatment. According to the textile sewage treatment method, the hydrolysis acidification tank plays an anaerobic role, the active sludge tank plays an aerobic role, sewage is treated, the biodegradability of the sewage is improved, a part of organic matters are adsorbed and degraded, the rest sludge of the system is digested, the sludge production is reduced, fine particle pollutants which cannot be precipitated by gravity are separated through the cooperation of the air flotation machine and the centrifugal machine, suspended matters with different masses are separated from water, the separation efficiency is improved, the adding amount of polyaluminium chloride is reduced through the synergistic effect of polyacrylamide and polyaluminium chloride, and the characteristics of good treatment effect, low cost and the like can be achieved.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a textile sewage treatment method.
Background
The textile printing and dyeing industry is an industrial wastewater discharge large-scale household, and the textile wastewater is wastewater generated in the production process of textile printing and dyeing enterprises. Because of the difference of the processed raw materials, the varieties of products, the processing technology and the processing mode, the composition and the property of the wastewater are greatly changed, the wastewater has high organic matter content, deep chromaticity, complex components and high content of harmful substances, and can cause serious damage to water bodies, and the traditional sewage treatment method only has simple precipitation and filtration, has poor treatment effect and can also cause influence on the ecological environment.
Disclosure of Invention
The invention mainly aims to provide a textile sewage treatment method which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
a textile sewage treatment method comprises the following steps:
s1, filtering, namely introducing the sewage into a filtering pipeline, wherein a grid and a filter screen are arranged in the filtering pipeline;
s2, adjusting water quality, and after the step S1 is finished, introducing the sewage into an adjusting tank to balance the water quality, so that the next procedure is facilitated, the water quality can be adjusted, and the accident buffering effect can be realized;
s3, anaerobic treatment, wherein after the step S2 is completed, sewage is introduced into a hydrolysis acidification tank to be subjected to hydrolysis acidification, the anaerobic biochemical effect is controlled in the hydrolysis and acidification stages, and macromolecular organic pollutants which are difficult to biodegrade are decomposed into micromolecular organic pollutants which are easy to biodegrade, so that the subsequent aerobic biological treatment of the wastewater is facilitated, and the subsequent treatment load is reduced;
s4, aerobic treatment, wherein after the step S3 is finished, the sewage is introduced into an activated sludge tank, and organic pollutants are converted into inorganic substances such as carbon dioxide and the like through the biochemical action of microorganisms in the activated sludge;
s5, anoxic treatment, namely after the step S4 is finished, introducing the sewage into an anoxic tank, and converting nitrate nitrogen into nitrogen by denitrifying bacteria in the anoxic tank to realize denitrification;
s6, biological contact oxidation treatment, wherein after the step S5 is completed, biological filler is used as a carrier of microorganisms, the carrier with the microorganisms is immersed in the sewage, and organic pollutants are removed under the metabolic action of the microorganisms;
s7, flocculating and precipitating, wherein after the step S6 is completed, the sewage is introduced into a flocculating and precipitating tank, polyaluminium chloride is added to perform hydrolysis and polymerization reactions to generate high-valence polyhydroxy cations, the high-valence polyhydroxy cations and colloids in the water are subjected to double layer compression, neutralization and destabilization, adsorption bridging and are assisted by the functions of catching and sweeping of precipitates, and the generated coarse flocs are removed by precipitation;
s8, air flotation, wherein air is introduced into the sewage to generate fine bubbles, the fine bubbles are attached to fine particle pollutants to form a floating body with density smaller than that of the water, the floating body floats to the water surface, and the fine particle pollutants which are close to or smaller than the water and can not be precipitated by gravity are separated;
s9, centrifugal separation, wherein after the step S8 is completed, sewage is introduced into a separation device, and suspended matters and water bodies with different masses are separated by utilizing centrifugal action;
and S10, disinfection treatment, namely, after the step S8 is finished, introducing the sewage into a disinfection tank for disinfection, and finally directly discharging the disinfected water to a river.
Preferably, in step S1, the grid is vertically or obliquely placed on the pipeline to remove coarse suspended matters and floating matters in the wastewater, so as to prevent the subsequent device from being blocked, and the screen is disposed below the grid to remove finer suspended matters.
Preferably, in the step S3, sulfate is used in the hydrolysis acidification tank to perform hydrolysis acidification on the sewage.
Preferentially, the powdered activated carbon is added into the activated sludge in the step S4, and a large amount of microorganisms are gathered on the surface of the activated carbon by utilizing the characteristics of high porosity and large specific surface area of the activated carbon, so that the microbial biomass is increased, the sedimentation performance of the sludge is improved, and the subsequent mud-water separation is easy.
Preferentially, the polyacrylamide is added into the flocculation sedimentation tank in the step S7, the polyacrylamide and the polyaluminium chloride act synergistically, the adding amount of the polyaluminium chloride is reduced, and the characteristics of good treatment effect, low cost and the like can be achieved.
Preferably, the cavitation air flotation machine is adopted in the step S8, so as to achieve miniaturization of the equipment and save investment and operation cost.
Preferably, the separation device in step S9 includes a flow separator and a centrifuge.
Preferably, a chlorine dioxide generator is disposed in the disinfection tank in the step S10.
Compared with the prior art, the invention has the following beneficial effects: through the matching effect of the hydrolysis acidification tank and the activated sludge tank, the hydrolysis acidification tank plays an anaerobic role, the activated sludge tank plays an aerobic role, sewage is treated, the biodegradability of the sewage is improved, a part of organic matters is adsorbed and degraded, the rest sludge of the system is digested, and the sludge production is reduced;
through the cooperation of the air floatation machine and the centrifugal machine, fine particle pollutants which cannot be precipitated by gravity are separated, suspended matters with different masses are separated from water, and the separation efficiency is improved;
by adding polyacrylamide into the flocculation sedimentation tank, the polyacrylamide and the polyaluminium chloride have synergistic effect, so that the dosage of the polyaluminium chloride is reduced, and the characteristics of good treatment effect, low cost and the like can be achieved.
Drawings
FIG. 1 is a schematic view of a process flow of a textile wastewater treatment method of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
A textile wastewater treatment method as shown in fig. 1, comprising the following steps:
s1, filtering, namely introducing the sewage into a filtering pipeline, wherein a grid and a filter screen are arranged in the filtering pipeline;
s2, adjusting water quality, and after the step S1 is finished, introducing the sewage into an adjusting tank to balance the water quality, so that the next procedure is facilitated, the water quality can be adjusted, and the accident buffering effect can be realized;
s3, anaerobic treatment, wherein after the step S2 is completed, sewage is introduced into a hydrolysis acidification tank to be subjected to hydrolysis acidification, the anaerobic biochemical effect is controlled in the hydrolysis and acidification stages, and macromolecular organic pollutants which are difficult to biodegrade are decomposed into micromolecular organic pollutants which are easy to biodegrade, so that the subsequent aerobic biological treatment of the wastewater is facilitated, and the subsequent treatment load is reduced;
s4, aerobic treatment, wherein after the step S3 is finished, the sewage is introduced into an activated sludge tank, and organic pollutants are converted into inorganic substances such as carbon dioxide and the like through the biochemical action of microorganisms in the activated sludge;
s5, anoxic treatment, namely after the step S4 is finished, introducing the sewage into an anoxic tank, and converting nitrate nitrogen into nitrogen by denitrifying bacteria in the anoxic tank to realize denitrification;
s6, biological contact oxidation treatment, wherein after the step S5 is completed, biological filler is used as a carrier of microorganisms, the carrier with the microorganisms is immersed in the sewage, and organic pollutants are removed under the metabolic action of the microorganisms;
s7, flocculating and precipitating, wherein after the step S6 is completed, the sewage is introduced into a flocculating and precipitating tank, polyaluminium chloride is added to perform hydrolysis and polymerization reactions to generate high-valence polyhydroxy cations, the high-valence polyhydroxy cations and colloids in the water are subjected to double layer compression, neutralization and destabilization, adsorption bridging and are assisted by the functions of catching and sweeping of precipitates, and the generated coarse flocs are removed by precipitation;
s8, air flotation, wherein air is introduced into the sewage to generate fine bubbles, the fine bubbles are attached to fine particle pollutants to form a floating body with density smaller than that of the water, the floating body floats to the water surface, and the fine particle pollutants which are close to or smaller than the water and can not be precipitated by gravity are separated;
s9, centrifugal separation, wherein after the step S8 is completed, sewage is introduced into a separation device, and suspended matters and water bodies with different masses are separated by utilizing centrifugal action;
and S10, disinfection treatment, namely, after the step S8 is finished, introducing the sewage into a disinfection tank for disinfection, and finally directly discharging the disinfected water to a river.
In the step S1, the grating is vertically or obliquely arranged on the pipeline to remove coarse suspended matters and floating matters in the wastewater so as to prevent the blockage of a device at the back, and the screen is arranged below the grating to remove fine suspended matters; step S3, sulfate is adopted in the hydrolysis acidification tank to carry out hydrolysis acidification treatment on the sewage; in the step S4, powdered activated carbon is added into the activated sludge, and a large amount of microorganisms are gathered on the surface of the activated carbon by utilizing the characteristics of high porosity and large specific surface area of the activated carbon, so that the microbial biomass is increased, the sedimentation performance of the sludge is improved, and the subsequent mud-water separation is easy; in the step S7, polyacrylamide is added into the flocculation sedimentation tank, and the polyacrylamide and polyaluminium chloride act synergistically, so that the adding amount of the polyaluminium chloride is reduced, and the characteristics of good treatment effect, low cost and the like can be achieved; in the step S8, a cavitation air flotation machine is adopted, so that the miniaturization of equipment is realized, and the investment and the operation cost are also saved; the separation device in the step S9 comprises a flow separator and a centrifuge; in step S10, a chlorine dioxide generator is provided in the disinfection tank.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (8)
1. A textile sewage treatment method is characterized by comprising the following steps:
s1, filtering, namely introducing the sewage into a filtering pipeline, wherein a grid and a filter screen are arranged in the filtering pipeline;
s2, adjusting water quality, and after the step S1 is finished, introducing the sewage into an adjusting tank to balance the water quality, so that the next procedure is facilitated, the water quality can be adjusted, and the accident buffering effect can be realized;
s3, anaerobic treatment, wherein after the step S2 is completed, sewage is introduced into a hydrolysis acidification tank to be subjected to hydrolysis acidification, the anaerobic biochemical effect is controlled in the hydrolysis and acidification stages, and macromolecular organic pollutants which are difficult to biodegrade are decomposed into micromolecular organic pollutants which are easy to biodegrade, so that the subsequent aerobic biological treatment of the wastewater is facilitated, and the subsequent treatment load is reduced;
s4, aerobic treatment, wherein after the step S3 is finished, the sewage is introduced into an activated sludge tank, and organic pollutants are converted into inorganic substances such as carbon dioxide and the like through the biochemical action of microorganisms in the activated sludge;
s5, anoxic treatment, namely after the step S4 is finished, introducing the sewage into an anoxic tank, and converting nitrate nitrogen into nitrogen by denitrifying bacteria in the anoxic tank to realize denitrification;
s6, biological contact oxidation treatment, wherein after the step S5 is completed, biological filler is used as a carrier of microorganisms, the carrier with the microorganisms is immersed in the sewage, and organic pollutants are removed under the metabolic action of the microorganisms;
s7, flocculating and precipitating, wherein after the step S6 is completed, the sewage is introduced into a flocculating and precipitating tank, polyaluminium chloride is added to perform hydrolysis and polymerization reactions to generate high-valence polyhydroxy cations, the high-valence polyhydroxy cations and colloids in the water are subjected to double layer compression, neutralization and destabilization, adsorption bridging and are assisted by the functions of catching and sweeping of precipitates, and the generated coarse flocs are removed by precipitation;
s8, air flotation, wherein air is introduced into the sewage to generate fine bubbles, the fine bubbles are attached to fine particle pollutants to form a floating body with density smaller than that of the water, the floating body floats to the water surface, and the fine particle pollutants which are close to or smaller than the water and can not be precipitated by gravity are separated;
s9, centrifugal separation, wherein after the step S8 is completed, sewage is introduced into a separation device, and suspended matters and water bodies with different masses are separated by utilizing centrifugal action;
and S10, disinfection treatment, namely, after the step S8 is finished, introducing the sewage into a disinfection tank for disinfection, and finally directly discharging the disinfected water to a river.
2. The textile wastewater treatment method of claim 1, wherein in step S1, the grid is vertically or obliquely placed on the pipeline to remove coarse suspended matters and floating matters in the wastewater so as to prevent the subsequent devices from being blocked, and the screen is arranged below the grid to remove finer suspended matters.
3. The textile wastewater treatment method of claim 1, wherein in the step S3, sulfate is used in the hydrolysis acidification tank to perform hydrolysis acidification treatment on the wastewater.
4. The textile wastewater treatment method of claim 1, wherein powdered activated carbon is added to the activated sludge in the step S4, and a large amount of microorganisms are gathered on the surface of the activated sludge by utilizing the characteristics of high porosity and large specific surface area of the activated carbon, so that the microbial biomass is increased, the sedimentation performance of the sludge is improved, and the subsequent sludge-water separation is facilitated.
5. The textile sewage treatment method according to claim 1, wherein polyacrylamide is added into the flocculation sedimentation tank in the step S7, and the polyacrylamide and polyaluminium chloride act synergistically to reduce the dosage of polyaluminium chloride, and the characteristics of good treatment effect, low cost and the like can be achieved.
6. The textile wastewater treatment method according to claim 1, wherein a cavitation air flotation machine is adopted in the step S8, so that the miniaturization of equipment is realized, and the investment and the operation cost are also saved.
7. The textile wastewater treatment method of claim 1, wherein the separation equipment in the step S9 comprises a flow application separator and a centrifuge.
8. The textile wastewater treatment method of claim 1, wherein a chlorine dioxide generator is disposed in the disinfection tank in the step S10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911008525.9A CN110590082A (en) | 2019-10-22 | 2019-10-22 | Textile sewage treatment method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911008525.9A CN110590082A (en) | 2019-10-22 | 2019-10-22 | Textile sewage treatment method |
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| CN110590082A true CN110590082A (en) | 2019-12-20 |
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| CN201911008525.9A Pending CN110590082A (en) | 2019-10-22 | 2019-10-22 | Textile sewage treatment method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110369438A (en) * | 2018-12-26 | 2019-10-25 | 田城德 | A kind of kitchen garbage separation and recovery method |
| CN112876010A (en) * | 2021-04-29 | 2021-06-01 | 潍坊特钢集团有限公司 | Steelmaking waste water treatment facilities |
| CN113149369A (en) * | 2021-05-18 | 2021-07-23 | 张龙龙 | Environment-friendly sewage treatment method for textile production |
-
2019
- 2019-10-22 CN CN201911008525.9A patent/CN110590082A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110369438A (en) * | 2018-12-26 | 2019-10-25 | 田城德 | A kind of kitchen garbage separation and recovery method |
| CN110369438B (en) * | 2018-12-26 | 2022-05-31 | 田城德 | Kitchen waste separation and recovery method |
| CN112876010A (en) * | 2021-04-29 | 2021-06-01 | 潍坊特钢集团有限公司 | Steelmaking waste water treatment facilities |
| CN113149369A (en) * | 2021-05-18 | 2021-07-23 | 张龙龙 | Environment-friendly sewage treatment method for textile production |
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