CN213865855U - Industrial park wastewater treatment system containing printing and dyeing wastewater - Google Patents
Industrial park wastewater treatment system containing printing and dyeing wastewater Download PDFInfo
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- CN213865855U CN213865855U CN202022982868.XU CN202022982868U CN213865855U CN 213865855 U CN213865855 U CN 213865855U CN 202022982868 U CN202022982868 U CN 202022982868U CN 213865855 U CN213865855 U CN 213865855U
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Abstract
The utility model discloses an industrial park wastewater treatment system containing printing and dyeing wastewater, which belongs to the technical field of wastewater treatment and comprises a pretreatment device, a wastewater adjusting tank, a hydrolysis acidification tank, an AAO treatment device, a sedimentation tank, a Fenton treatment tank, a high-efficiency sedimentation tank, an ultrafiltration device, a resin adsorption device and an ultraviolet sterilization disinfection device which are sequentially arranged; the wastewater enters a wastewater treatment system from the pretreatment device, is treated by the treatment systems arranged in sequence, and is discharged after being sterilized and disinfected by the ultraviolet sterilization and disinfection device. The utility model provides an industrial park effluent disposal system who contains printing and dyeing wastewater, this effluent disposal system regard resin adsorption equipment as waste water advanced treatment's core equipment, utilize adsorption resin's adsorption to carry out effective treatment to organic matter, partial inorganic matter, organic-inorganic complex, colourity etc. of aquatic, carry out effluent discharge standard to IV class waters of surface water.
Description
Technical Field
The utility model relates to a waste water treatment technical field especially relates to industrial park effluent disposal system who contains printing and dyeing wastewater.
Background
The printing and dyeing wastewater refers to wastewater discharged from the processes of pretreatment, dyeing, printing and finishing of cotton, wool, hemp, silk, chemical fiber or blended products. The composite material contains a large amount of complex components such as dye, slurry, surfactant and the like, has the characteristics of large chromaticity, high organic matter concentration, strong alkalinity, large change of water quality and water quantity and the like, and belongs to one of industrial wastewater difficult to treat.
At present, along with the continuous increase of the wastewater discharge amount in the park, the difficulty of the industrial park wastewater treatment containing printing and dyeing wastewater is increased. The treatment method of the printing and dyeing wastewater is mainly a biochemical method. However, the effluent, COD and chromaticity of the single biochemical treatment method are difficult to reach the standard due to the complex components of the wastewater in the park. This is because the refractory organic compounds in the wastewater are not readily degraded by microorganisms and are difficult to remove by conventional biological treatment processes. The single treatment method is difficult to ensure that the treated effluent can meet the national quality requirement.
SUMMERY OF THE UTILITY MODEL
For the problem that the processing of solving the industrial park waste water that contains printing and dyeing waste water is difficult to reach national quality requirement, the utility model provides an industrial park effluent disposal system who contains printing and dyeing waste water, this effluent disposal system can carry out effective treatment to printing and dyeing waste water, reduces waste water discharge capacity, has protected the environment.
The utility model adopts the technical proposal that:
the industrial park wastewater treatment system containing printing and dyeing wastewater comprises a pretreatment device, a wastewater adjusting tank, a hydrolysis acidification tank, an AAO treatment device, a sedimentation tank, a Fenton treatment tank, a high-efficiency sedimentation tank, an ultrafiltration device, a resin adsorption device and an ultraviolet sterilization disinfection device which are sequentially arranged;
the wastewater enters a wastewater treatment system from the pretreatment device, is treated by the treatment systems arranged in sequence, and is discharged after being sterilized and disinfected by the ultraviolet sterilization and disinfection device.
The wastewater treatment system takes the resin adsorption device as a core device for advanced wastewater treatment, effectively treats organic matters, partial inorganic matters, organic-inorganic compounds, chromaticity and the like in water by utilizing the adsorption effect of adsorption resin, and improves the effluent discharge standard to IV-class water of surface water.
In the industrial park wastewater treatment system containing printing and dyeing wastewater disclosed by the application, the pretreatment device comprises a grating tank and a rotational flow sand settling device, and the rotational flow sand settling device is arranged at the post-process position of the grating tank.
In the industrial park wastewater treatment system containing printing and dyeing wastewater disclosed by the application, a submersible plug flow stirrer is arranged in the wastewater regulating tank.
In the industrial park wastewater treatment system containing printing and dyeing wastewater disclosed by the application, the hydrolytic acidification tank is internally provided with biological belt fillers.
In the industrial park wastewater treatment system containing printing and dyeing wastewater disclosed by the application, the AAO treatment device comprises an anaerobic tank, an anoxic tank and an aerobic tank;
wherein the anoxic tank is arranged between the anaerobic tank and the aerobic tank;
the anaerobic tank is connected with the hydrolysis acidification tank;
the aerobic tank is connected with the sedimentation tank.
In the industrial park wastewater treatment system containing printing and dyeing wastewater disclosed by the application, a return pipeline is also arranged between the anoxic tank and the aerobic tank.
In the industrial park wastewater treatment system containing printing and dyeing wastewater disclosed by the application, the anoxic pond and the aerobic pond are both internally provided with biological belt fillers.
In the industrial park wastewater treatment system containing printing and dyeing wastewater disclosed by the application, the sedimentation tank is a radial flow type sedimentation tank with a middle inlet and a middle outlet.
The utility model has the advantages that:
the utility model provides an industrial park wastewater treatment system containing printing and dyeing wastewater, which comprises a pretreatment device, a wastewater adjusting tank, a hydrolysis acidification tank, an AAO treatment device, a sedimentation tank, a Fenton treatment tank, a high-efficiency sedimentation tank, an ultrafiltration device, a resin adsorption device and an ultraviolet sterilization disinfection device which are sequentially arranged; the wastewater enters a wastewater treatment system from the pretreatment device, is treated by the treatment systems arranged in sequence, and is discharged after being sterilized and disinfected by the ultraviolet sterilization and disinfection device. The utility model discloses a waste water treatment system combines together biochemical method, physical method and chemical process, can carry out effective treatment to printing and dyeing waste water, reduces waste water discharge capacity, has protected the environment. Meanwhile, the resin adsorption device is used as a core device for advanced wastewater treatment in the wastewater treatment system, organic matters, partial inorganic matters, organic-inorganic compounds, chromaticity and the like in water are effectively treated by utilizing the adsorption effect of adsorption resin, and the effluent discharge standard is standardized to IV-class water of surface water.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the wastewater treatment system for an industrial park containing printing and dyeing wastewater of the present invention.
Reference numerals: the device comprises a pretreatment device 1, a wastewater adjusting tank 2, a hydrolysis acidification tank 3, an AAO treatment device 4, a sedimentation tank 5, a Fenton treatment tank 6, a high-efficiency sedimentation tank 7, an ultrafiltration device 8, a resin adsorption device 9, an ultraviolet sterilization disinfection device 10, a grating tank 11, a rotational flow sand settling device 12, a submersible plug flow stirrer 21, an anaerobic tank 41, an anoxic tank 42 and an aerobic tank 43.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the present invention, it is to be understood that the terms "longitudinal", "upper", "lower", "inner", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; they may be mechanically or electrically connected, directly or indirectly through intervening media, or may be interconnected within two elements or in an interactive relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The printing and dyeing wastewater refers to wastewater discharged from the processes of pretreatment, dyeing, printing and finishing of cotton, wool, hemp, silk, chemical fiber or blended products. The composite material contains a large amount of complex components such as dye, slurry, surfactant and the like, has the characteristics of large chromaticity, high organic matter concentration, strong alkalinity, large change of water quality and water quantity and the like, and belongs to one of industrial wastewater difficult to treat.
At present, along with the continuous increase of the wastewater discharge amount in the park, the difficulty of the industrial park wastewater treatment containing printing and dyeing wastewater is increased. The treatment method of the printing and dyeing wastewater is mainly a biochemical method. However, the effluent, COD and chromaticity of the single biochemical treatment method are difficult to reach the standard due to the complex components of the wastewater in the park. This is because the refractory organic compounds in the wastewater are not readily degraded by microorganisms and are difficult to remove by conventional biological treatment processes. The single treatment method is difficult to ensure that the treated effluent can meet the national quality requirement.
For the problem that the processing of solving the industrial park waste water that contains printing and dyeing waste water is difficult to reach national quality requirement, the utility model provides an industrial park waste water treatment system who contains printing and dyeing waste water, as shown in figure 1, this system includes according to the preface to arrange:
the pretreatment device 1 is a pretreatment process of a wastewater treatment system. Waste water gets into preprocessing device 1 through the inlet channel earlier, and most float and suspension debris in the waste water are detached through preprocessing device 1 for SS (solid suspended solid) concentration in the waste water reduces, protects the normal work of subsequent processing process.
And the wastewater adjusting tank 2 is connected with the pretreatment device 1, and wastewater treated by the pretreatment device 1 enters the wastewater adjusting tank 2 through a water inlet pipeline. Because the amounts of the wastewater discharged at different time intervals are different, the wastewater adjusting tank 2 is arranged to store the wastewater discharged at different time intervals, and the temperature of the wastewater is reduced. In order to ensure the normal operation of the subsequent treatment process, the wastewater needs to be regulated, the water quality is balanced, the wastewater can uniformly enter the subsequent treatment process, and the treatment effect is improved.
And the hydrolysis acidification pool 3 is arranged behind the wastewater adjusting pool 2, and wastewater treated by the wastewater adjusting pool 2 enters the hydrolysis acidification pool 3 through a water inlet pipeline. The hydrolytic acidification tank 3 can convert some macromolecular substances which are difficult to degrade into micromolecular substances (such as organic acid and the like) which are easy to biodegrade, so that the biodegradability and the degradation speed of the wastewater are greatly improved, the higher CODcr (dichromate index, which refers to the chemical oxygen consumption measured by using potassium dichromate as an oxidant) removal rate in the biological tank is achieved, and the subsequent biochemical treatment effect is ensured.
And the AAO treatment device 4 is connected with the hydrolysis acidification tank 3, and the wastewater degraded by the hydrolysis acidification tank 3 enters the AAO treatment device 4 through a water inlet pipeline for biochemical treatment. The biochemical treatment is to degrade organic matters and nitrify ammonia nitrogen in the waste water by utilizing the metabolism of microorganisms.
The sedimentation tank 5 is connected to the AAO treatment apparatus 4. The wastewater treated by the AAO treatment device 4 flows into a sedimentation tank 5 through a water inlet pipeline for solid-liquid separation.
The Fenton treatment tank 6, which is normally used only as an intermediate water tank, is arranged behind the sedimentation tank 5. When the quality of the biochemical effluent is poor, a Fenton reagent is added to quickly oxidize the biochemical tail water so as to ensure that the effluent is discharged after reaching the standard.
The high-efficiency sedimentation tank 7 is connected with the Fenton treatment tank 6. After the wastewater enters a high-efficiency sedimentation tank 7, PAC (polyaluminium chloride) and PAM (polyacrylamide) are added. PAC is a common inorganic salt coagulant, and can rapidly precipitate colloids in sewage or sludge by its or its hydrolysis products. PAM is a high-molecular flocculant and can form larger flocs between particles, thereby generating huge surface adsorption. PAC and PAM are added into the high-efficiency sedimentation tank 7, so that the waste water is subjected to coagulation reaction, phosphorus in the waste water is precipitated and separated, and the effluent is ensured to reach the standard and be discharged.
The ultrafiltration device 8 is connected with the high-efficiency sedimentation tank 7. When the wastewater flows through the ultrafiltration device 8, the wastewater flows through the surface of the ultrafiltration membrane under the pushing of pressure, molecules smaller than membrane pores pass through the membrane, molecules larger than the membrane pores are intercepted, substances such as colloid and the like in the wastewater can be removed through the ultrafiltration device 8, and the service life of the subsequent resin adsorption device 9 is protected.
And the resin adsorption device 9 is arranged behind the ultrafiltration device 8 and is a core device for advanced wastewater treatment. The resin adsorption device 9 effectively treats organic matter, partial inorganic matter, organic-inorganic composite, color, etc. in water by utilizing the adsorption action of the adsorption resin.
The ultraviolet sterilization and disinfection device 10 is the last process of a wastewater treatment system. The ultraviolet belongs to broad-spectrum sterilization rays, and most pathogenic microorganisms in water can be killed under enough irradiation dose. After biochemical treatment, the wastewater is disinfected to make the number of colibacillus in the wastewater reach the effluent standard.
Wherein, the wastewater enters the wastewater treatment system from the pretreatment device 1, is treated by the treatment systems arranged in sequence, and is discharged after being sterilized and disinfected by the ultraviolet sterilization and disinfection device 10.
In one embodiment, the pretreatment device 1 includes a grating tank 11 and a cyclone sand trap 12. The cyclone sand settling vessel 12 is provided at a post-process of the grating tank 11. The grid pond 11 comprises a coarse grid and a fine grid, and is composed of one or more groups of parallel metal grid bars and a frame. The printing and dyeing wastewater has large water volume and large suspended sundries, and the grid pond 11 can effectively intercept the large suspended sundries, is not easy to block a pipeline, improves the treatment capacity and lightens the treatment load of subsequent procedures. The printing and dyeing wastewater also contains a large amount of silt substances, and the silt substances need to be separated by the cyclone sand settling device 12, so that the treatment load of the subsequent process is reduced.
In one embodiment, a submersible plug flow agitator 21 is provided within the wastewater conditioning tank 2. The submersible plug flow agitator 21 prevents sludge from the wastewater from settling at the bottom of the wastewater conditioning tank 2 and mixes the wastewater with the return and recirculation water streams to evenly distribute suspended solids.
In one embodiment, the hydrolysis acidification tank 3 is filled with biological belt packing. The biological belt filler is a carrier for a microorganism biofilm culturing on which microorganisms can attach and grow. The biological belt filler has larger specific surface area, can provide larger attachment space for microorganisms, increases the contact area of the wastewater and the biological film, and improves the wastewater purification effect of the microorganisms.
In one embodiment, the AAO treatment device 4 includes an anaerobic tank 41, an anoxic tank 42, and an aerobic tank 43. The anoxic tank 42 is disposed between the anaerobic tank 41 and the aerobic tank 43. A return pipeline is also arranged between the anoxic tank 42 and the aerobic tank 43. The anaerobic tank 41 is connected with the hydrolysis acidification tank 3. The aerobic tank 43 is connected with the sedimentation tank 5. The anaerobic tank 41 is mainly used for releasing phosphorus by phosphorus releasing bacteria and ammoniating part of organic matters at the same time. The anoxic tank 42 mainly performs deamination to convert the nitrate and nitrite brought back by reflux into nitrogen gas through biological denitrification and discharges the nitrogen gas into the air. In the aerobic tank 43, nitrifying bacteria convert the inflowing ammonia nitrogen into nitrate and nitrite through biological nitrification.
In one embodiment, the anoxic tank 42 and the aerobic tank 43 are filled with biological belt fillers, which can improve the wastewater purification effect by microorganisms.
In one embodiment, the sedimentation tank 5 is a radial sedimentation tank with a middle inlet and a middle outlet, and can remove sludge settled in the sedimentation tank and floating materials on the surface layer of the water surface. The center of the radial sedimentation tank with the middle inlet and the periphery of the radial sedimentation tank is used for feeding water and discharging sludge, and the periphery of the radial sedimentation tank is used for discharging water, so that the stirring force on a water body is small, and the sludge is favorably removed.
In a specific embodiment, the scale upgrading project of a certain sewage treatment plant comprises the following treatment scales: 2.0 ten thousand meters3And d, the designed effluent quality is standardized from the first-class standard of the textile dyeing and finishing industry water pollutant discharge standard to IV-class (except total nitrogen) in the surface water environment quality standard. After the printing and dyeing enterprise is moved, the resin adsorption device 9 is removed, and the actual effluent is class III in the environmental quality standard of surface water.
The utility model discloses an industrial park effluent disposal system who contains printing and dyeing wastewater flows into preprocessing device 1 through the inlet channel at the during operation, waste water through grid pond 11 interception great suspension debris earlier, and rethread cyclone desilting ware 12 carries out the separation of silt. After the pretreatment is finished, the wastewater flows into a wastewater adjusting tank 2 to adjust the quality and quantity of the water. Then the wastewater flows into a hydrolytic acidification tank 3 to convert some difficultly degradable macromolecular substances into easily biodegradable micromolecular substances. After the hydrolysis acidification treatment is finished, the treated water enters an AAO treatment device 4 for biochemical treatment, and organic matter degradation and ammonia nitrogen nitration are carried out. After the biochemical treatment is finished, the wastewater flows into a sedimentation tank 5 for solid-liquid separation. When the quality of the biochemical effluent is poor, a Fenton reagent is added into the Fenton treatment tank 6 to quickly oxidize the biochemical tail water so as to ensure that the effluent is discharged after reaching the standard. Then enters a high-efficiency sedimentation tank 7, a flocculating agent is added to enable the waste water to have coagulation reaction, and phosphorus in the waste water is precipitated and separated. In order to protect the operation life of the subsequent resin adsorption device 9, the wastewater firstly flows through the ultrafiltration device 8 to remove substances such as colloid and the like in the wastewater, and then flows into the resin adsorption device 9, and organic substances, partial inorganic substances, organic-inorganic compounds, chromaticity and the like in the wastewater are effectively treated by utilizing the adsorption effect of the adsorption resin. Finally, the wastewater flows into the ultraviolet sterilization device 10 for sterilization, so that the index of coliform group number in the obtained water reaches the effluent standard.
Based on above-mentioned each embodiment, the utility model discloses an industrial park effluent disposal system who contains printing and dyeing wastewater has following advantage: the utility model discloses well effluent disposal system combines together biochemical method, physical method and chemical process, can carry out effective treatment to printing and dyeing waste water, reduces waste water discharge capacity, environmental protection. Wastewater sequentially passes through the pretreatment device 1, the wastewater adjusting tank 2, the hydrolysis acidification tank 3, the AAO treatment device 4, the sedimentation tank 5, the Fenton treatment tank 6, the efficient sedimentation tank 7, the ultrafiltration device 8 and the resin adsorption device 9 to be treated, and is finally sterilized and disinfected by the ultraviolet sterilization and disinfection device 10 and then discharged. The wastewater treatment system takes the resin adsorption device 9 as a core device for advanced wastewater treatment, effectively treats organic matters, partial inorganic matters, organic-inorganic compounds, chromaticity and the like in water by utilizing the adsorption effect of adsorption resin, and can improve the effluent discharge standard to IV-class water of surface water.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The industrial park wastewater treatment system containing printing and dyeing wastewater is characterized by comprising a pretreatment device (1), a wastewater adjusting tank (2), a hydrolysis acidification tank (3), an AAO treatment device (4), a sedimentation tank (5), a Fenton treatment tank (6), a high-efficiency sedimentation tank (7), an ultrafiltration device (8), a resin adsorption device (9) and an ultraviolet sterilization disinfection device (10) which are sequentially arranged;
wherein, the wastewater enters a wastewater treatment system from the pretreatment device (1), is treated by the treatment systems arranged in sequence, and is discharged after being sterilized and disinfected by an ultraviolet sterilization and disinfection device (10).
2. The industrial park wastewater treatment system containing printing and dyeing wastewater according to claim 1, characterized in that the pretreatment device (1) comprises a grating basin (11) and a cyclone sand settler (12), and the cyclone sand settler (12) is disposed at a post-process of the grating basin (11).
3. The industrial park wastewater treatment system containing printing and dyeing wastewater according to claim 1, characterized in that a submersible plug flow agitator (21) is arranged in the wastewater conditioning tank (2).
4. The industrial park wastewater treatment system containing printing and dyeing wastewater according to claim 1, characterized in that the hydrolytic acidification tank (3) is internally provided with biological belt packing.
5. The industrial park wastewater treatment system containing printing and dyeing wastewater according to claim 1, characterized in that the AAO treatment device (4) includes an anaerobic tank (41), an anoxic tank (42) and an aerobic tank (43);
wherein the anoxic tank (42) is arranged between the anaerobic tank (41) and the aerobic tank (43);
the anaerobic tank (41) is connected with the hydrolysis acidification tank (3);
the aerobic tank (43) is connected with the sedimentation tank (5).
6. The system for treating industrial park wastewater containing printing and dyeing wastewater according to claim 5, characterized in that a return pipeline is further provided between the anoxic tank (42) and the aerobic tank (43).
7. The industrial park wastewater treatment system containing printing and dyeing wastewater according to claim 5, characterized in that the anoxic tank (42) and the aerobic tank (43) are both provided with biological belt packing.
8. The industrial park wastewater treatment system containing printing and dyeing wastewater according to claim 1, characterized in that the sedimentation tank (5) is a radial flow type sedimentation tank with a middle-in and a week-out.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114085009A (en) * | 2021-12-07 | 2022-02-25 | 广州博睿水处理科技有限公司 | Organic waste water disinfection system that disinfects |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114085009A (en) * | 2021-12-07 | 2022-02-25 | 广州博睿水处理科技有限公司 | Organic waste water disinfection system that disinfects |
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