CN213085766U - Comprehensive printing and dyeing wastewater treatment system - Google Patents
Comprehensive printing and dyeing wastewater treatment system Download PDFInfo
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- CN213085766U CN213085766U CN202021279899.2U CN202021279899U CN213085766U CN 213085766 U CN213085766 U CN 213085766U CN 202021279899 U CN202021279899 U CN 202021279899U CN 213085766 U CN213085766 U CN 213085766U
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Abstract
The application discloses synthesize printing and dyeing effluent disposal system, including the grid canal, transfer acid vat, pipe chute sedimentation tank, dissolve gas air supporting pond, air supporting sedimentation tank, biochemical pond and two heavy ponds, the play liquid end of grid canal with the feed liquor end of transferring acid vat links to each other through the pipeline, the play liquid end of transferring acid vat pass through the pipeline with the feed liquor end of pipe chute sedimentation tank links to each other, the play liquid end of pipe chute sedimentation tank pass through the pipeline with the feed liquor end of dissolving gas air supporting pond links to each other, dissolve the play liquid end of gas air supporting pond with the feed liquor end of air supporting sedimentation tank links to each other, the play liquid end of air supporting sedimentation tank with the feed liquor end of biochemical pond links to each other, the play liquid end of biochemical pond with the feed liquor end of two heavy ponds links to each other. The scheme treats the printing and dyeing sewage by adopting a front-end chemical method, reduces the load of a subsequent biochemical pool, ensures the effluent stability rate and can reduce the production cost.
Description
Technical Field
The application relates to the technical field of printing and dyeing wastewater treatment, in particular to a comprehensive printing and dyeing wastewater treatment system.
Background
The printing and dyeing wastewater treatment process flow is coagulation sedimentation/air flotation + biochemical treatment generally, and the effluent index requirement is loose; in recent years, due to the development of chemical fiber fabrics, the rise of silk-like fabrics and the improvement of printing and dyeing after-finishing technology, a large amount of organic matters (lignin and terephthalic acid) which are difficult to be biochemically degraded enter printing and dyeing wastewater, so that the stable operation of a back-end biochemical system is impacted, and in addition, the proposal of a new wastewater discharge standard makes part of printing and dyeing enterprises face huge survival pressure.
On the other hand, oxidation processes are continuously applied in advanced treatment of printing and dyeing wastewater. The Fenton reagent oxidation method has the advantages of simple equipment, mild reaction conditions, simplicity in operation, high efficiency and the like, so that the Fenton reagent oxidation method is widely applied, dyeing wastewater is subjected to physicochemical and biochemical treatment and then is subjected to advanced treatment by adopting the Fenton oxidation method, the CODcr (chemical oxygen consumption measured by using potassium dichromate as an oxidant, namely the dichromate index) of effluent can be stably lower than 60mg/L, the effluent quality reaches the discharge standard, but the Fenton oxidation system has the ton wastewater treatment cost of 1.2 yuan and high treatment cost.
SUMMERY OF THE UTILITY MODEL
The utility model provides a main aim at provides a synthesize printing and dyeing wastewater treatment system to it is great that printing and dyeing wastewater treatment rear end biochemical system stability receives the impact among the solution correlation technique, and the higher problem of treatment cost.
In order to achieve the above objects, the present application provides an integrated printing and dyeing wastewater treatment system comprising
The inner side of the grating channel is provided with a rotary grating, the side part of the grating channel is provided with a water pump, and the water inlet end of the water pump extends into the grating channel;
the acid adjusting tank is connected with the liquid outlet end of the water pump through a pipeline, a first stirrer is installed on the side of the acid adjusting tank, the stirring end of the first stirrer extends into the acid adjusting tank, a first liquid guide pipe is connected to the side of the acid adjusting tank, and the first liquid guide pipe is communicated with the interior of the acid adjusting tank;
the inclined tube sedimentation tank is communicated with the liquid outlet end of the first liquid guide tube, the upper side part of the inclined tube sedimentation tank is connected with a second liquid guide tube, and the second liquid guide tube is communicated with the inside of the inclined tube sedimentation tank;
the dissolved air flotation tank is internally provided with two clapboards, the middle parts of the two clapboards are respectively provided with a first electric gate valve, the clapboards divide the dissolved air flotation tank into a first treatment area, a second treatment area and a third treatment area, a second liquid guide pipe is communicated with the lateral part of the first treatment area, the lateral part of the dissolved air flotation tank is provided with an alkali adding pump, the liquid outlet end of the alkali adding pump extends into the first treatment area, the lateral part of the dissolved air flotation tank is provided with a second stirrer, the stirring end of the second stirrer extends into the first treatment area, the lateral part of the dissolved air flotation tank is provided with a first spiral conveyer, the discharge end of the first spiral conveyer extends into the second treatment area, the lateral part of the dissolved air flotation tank is provided with a third stirrer, and the stirring end of the third stirrer extends into the second treatment area, a second spiral material conveyer is installed on the side part of the dissolved air floatation tank, the discharge end of the second spiral material conveyer extends into the third treatment area, a fourth stirrer is installed on the side part of the dissolved air floatation tank, the stirring end of the fourth stirrer extends into the third treatment area, a third liquid guide pipe is installed on the side part of the dissolved air floatation tank, and the liquid inlet end of the third liquid guide pipe is communicated with the third treatment area;
the air flotation sedimentation tank is connected with the liquid outlet end of the third liquid guide pipe through a pipeline, a residue scraping machine is installed on the side portion of the air flotation sedimentation tank, a first sludge pump is installed on the side portion of the air flotation sedimentation tank, the feeding end of the first sludge pump extends into the lower portion of the inner side of the air flotation sedimentation tank, a fourth liquid guide pipe is connected to the side portion of the air flotation sedimentation tank, and the fourth liquid guide pipe is communicated with the interior of the air flotation sedimentation tank;
the side part of the biochemical tank is communicated with the fourth liquid guide pipe;
the secondary sedimentation tank is arranged on the side part of the biochemical tank, a second electric gate valve is arranged at the connecting part of the secondary sedimentation tank and the biochemical tank, a second sludge pump is arranged on the side part of the secondary sedimentation tank, the feeding end of the second sludge pump extends into the lower part of the inner side of the secondary sedimentation tank, and a fifth liquid guide pipe is arranged on the side part of the secondary sedimentation tank.
In an embodiment of the utility model, the first pH meter is installed to the lateral part of the accent sour pond, the sour liquid pump is installed to the lateral part of accent sour pond, the play liquid end of sour liquid pump stretches into the inside of accent sour pond.
In an embodiment of the present invention, two diversion holes are formed at a position of the partition board adjacent to the first electric gate valve.
In one embodiment of the present invention, the biochemical tank is configured as an anaerobic tank and a contact oxidation tank.
In an embodiment of the present invention, a fifth liquid guiding tube is connected between the biochemical tank and the secondary sedimentation tank, and the fifth liquid guiding tube is opposite to the side portion of the second electric gate valve.
In one embodiment of the present invention, the integrated dyeing wastewater treatment system further comprises a pasteurization tank, and the pasteurization tank is communicated with the sixth liquid guide tube.
The utility model discloses an in the embodiment, this synthesize printing and dyeing wastewater treatment system still include sludge thickening tank and fold spiral shell sludge dewaterer, sludge thickening tank with the discharge end of first sludge pump links to each other, sludge thickening tank with the discharge end of second sludge pump links to each other, sludge thickening tank's internally mounted has the third sludge pump, the feed end of third sludge pump stretches into sludge thickening tank's inboard lower part, the discharge end of third sludge pump pass through the pipeline with the feed end of folding spiral shell sludge dewaterer links to each other.
In an embodiment of the present invention, the drainage end of the sludge thickener is connected to the lateral part of the grid channel through a pipeline, and the drainage end of the spiral sludge dewatering machine is connected to the lateral part of the grid channel through a pipeline.
In an embodiment of the present invention, a second pH meter is installed at a side portion of the dissolved air flotation tank, and a detection end of the second pH meter extends into the first treatment area.
In the embodiment of the application, a comprehensive printing and dyeing wastewater treatment system is provided, and front-end chemical treatment of printing and dyeing wastewater is formed by an acid adjusting tank, an inclined tube sedimentation tank, a dissolved air floatation tank and an air floatation sedimentation tank, so that sodium ions in dissolved lignin are removed to form insoluble substances, and charged lignin particles destroy an electric double layer on the surface, the rejection energy peak is reduced, the stability of a colloidal state is destroyed, adsorption bridges form flocs, and finally the flocs are removed from water, so that the subsequent biochemical load is reduced, and the stability of effluent is ensured; the terephthalic acid contained in the alkali deweighting process of the terylene imitated silk can be treated, the slurry is separated out, and the treatment of organic matters is realized; the acid regulating tank and the inclined tube sedimentation tank are arranged at the front end of the dissolved air floatation tank, and the air floatation sedimentation tank before entering the biochemical tank is added, so that the COD removal efficiency is about twice of that of a single physicochemical system, the highest COD removal efficiency can reach 40%, and the stable operation of a subsequent biochemical tank is guaranteed; the overall production cost is lower compared to the existing fenton's reagent oxidation process.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is a schematic diagram of the overall structure of an integrated printing and dyeing wastewater treatment system provided according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a grid channel and an acid regulating tank part of an integrated printing and dyeing wastewater treatment system provided by an embodiment of the application;
FIG. 3 is a schematic sectional front view of a part of a dissolved air flotation tank of the integrated printing and dyeing wastewater treatment system according to an embodiment of the application;
FIG. 4 is a schematic top sectional view of a dissolved air flotation tank of an integrated printing and dyeing wastewater treatment system according to an embodiment of the present disclosure;
FIG. 5 is a schematic structural diagram of a part of an air flotation sedimentation tank, a biochemical tank and a secondary sedimentation tank of the integrated printing and dyeing wastewater treatment system provided by the embodiment of the application.
In the figure: 100. a grid channel; 110. a rotating grid; 120. a water pump; 200. an acid adjusting pool; 210. a first mixer; 220. a first catheter; 230. a first pH meter; 240. an acid liquid pump; 300. an inclined tube sedimentation tank; 310. a second catheter; 400. a dissolved air flotation tank; 410. a partition plate; 411. a flow guide hole; 420. a first electric gate valve; 430. a first treatment zone; 431. adding an alkali pump; 432. a second mixer; 433. a second pH meter; 440. a second treatment zone; 441. a first screw feeder; 442. a third stirrer; 450. a third treatment zone; 451. a second screw feeder; 452. a fourth mixer; 460. a third liquid guide tube; 500. an air flotation sedimentation tank; 510. a slag scraper; 520. a first sludge pump; 530. a fourth catheter; 600. a biochemical pool; 601. a sixth catheter; 700. a secondary sedimentation tank; 710. a second electric gate valve; 720. a second sludge pump; 730. a fifth liquid guide pipe; 800. a pasteurisation tank; 900. a sludge concentration tank; 910. a third sludge pump; 1000. fold spiral sludge dewaterer.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. 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 application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
Referring to fig. 1-5, the present application provides a comprehensive printing and dyeing wastewater treatment system, which comprises a grid channel 100, an acid adjusting tank 200, an inclined tube sedimentation tank 300, a dissolved air flotation tank 400, an air flotation sedimentation tank 500, a biochemical tank 600 and a secondary sedimentation tank 700, wherein a liquid outlet end of the grid channel 100 is connected with a liquid inlet end of the acid adjusting tank 200 through a pipeline, a liquid outlet end of the acid adjusting tank 200 is connected with a liquid inlet end of the inclined tube sedimentation tank 300 through a pipeline, a liquid outlet end of the inclined tube sedimentation tank 300 is connected with a liquid inlet end of the dissolved air flotation tank 400 through a pipeline, a liquid outlet end of the dissolved air flotation tank 400 is connected with a liquid inlet end of the air flotation sedimentation tank 500 through a pipeline, a liquid outlet end of the air flotation sedimentation tank 500 is connected with a liquid inlet end of the biochemical tank 600 through a pipeline, and a liquid outlet end of the biochemical tank 600 is connected with.
Referring to fig. 1 and 2, a rotary grating 110 is installed on the inner side of the grating channel 100, a water pump 120 is installed on the side of the grating channel 100, and a water inlet end of the water pump 120 extends into the grating channel 100.
Referring to fig. 1 and 2, an acid adjusting tank 200 is connected to a liquid outlet end of a water pump 120 through a pipeline, a first stirrer 210 is installed at a side portion of the acid adjusting tank 200, a stirring end of the first stirrer 210 extends into the acid adjusting tank 200, a first liquid guide pipe 220 is connected to the side portion of the acid adjusting tank, the first liquid guide pipe 220 is communicated with the interior of the acid adjusting tank 200, a first pH meter 230 is installed at a side portion of the acid adjusting tank 200, an acid pump 240 is installed at a side portion of the acid adjusting tank 200, and a liquid outlet end of the acid pump 240 extends into the acid adjusting tank 200 Single ring) organic contaminants.
Referring to fig. 1, the inclined tube sedimentation tank 300 is connected to the liquid outlet end of the first liquid guide tube 220, and the upper side of the inclined tube sedimentation tank 300 is connected to the second liquid guide tube 310, when in use, the first liquid guide tube 220 is used for guiding the sewage in the acid liquid tank into the inclined tube sedimentation tank 300, the inclined parallel tubes or parallel tubes (sometimes honeycomb fillers can be used) are used for dividing the sewage into a series of shallow sedimentation layers, the treated and settled sludge moves and separates from each other in each shallow sedimentation layer, so as to realize the primary sedimentation and separation of the sewage, and the second liquid guide tube 310 is used for guiding the clean sewage after the sedimentation and separation into the subsequent dissolved air flotation tank 400.
Referring to fig. 1, 3 and 4, two partition plates 410 are installed inside the dissolved air floatation tank 400, a first electric gate valve 420 is installed in the middle of each partition plate 410, guide holes 411 are formed in the portions, adjacent to the first electric gate valve 420, of the two partition plates 410, the dissolved air floatation tank 400 is divided into a first treatment area 430, a second treatment area 440 and a third treatment area 450 by the two partition plates 410, a second guide pipe 310 is communicated with the side portion of the first treatment area 430, an alkali adding pump 431 is installed on the side portion of the dissolved air floatation tank 400, the liquid outlet end of the alkali adding pump 431 extends into the first treatment area 430, a second stirrer 432 is installed on the side portion of the dissolved air floatation tank 400, the stirring end of the second stirrer 432 extends into the first treatment area 430, a second pH meter 433 is installed on the side portion of the dissolved air floatation tank 400, the detection end of the second pH meter 433 extends into the first treatment area 430, a first spiral material conveyor 441 is installed on the side portion of the dissolved air floatation tank 400, the discharge end of the first spiral material conveyor 441 extends into the second treatment area 440, the side of the dissolved air flotation tank 400 is provided with a third stirrer 442, the stirring end of the third stirrer 442 extends into the second treatment area 440, the side of the dissolved air flotation tank 400 is provided with a second spiral material conveyor 451, the discharge end of the second spiral material conveyor 451 extends into the third treatment area 450, the side of the dissolved air flotation tank 400 is provided with a fourth stirrer 452, the stirring end of the fourth stirrer 452 extends into the third treatment area 450, the side of the dissolved air flotation tank 400 is provided with a third liquid guide pipe 460, the liquid inlet end of the third liquid guide pipe 460 is communicated with the third treatment area 450, and when in specific use, liquid alkali is added into the first treatment area 430 through an alkali adding pump 431, and is fully stirred by the second stirrer 432, so that the wastewater is neutral; operating a first electric gate valve 420 to enable the sewage in the first treatment area 430 to enter a second treatment area 440, adding a coagulant into the second treatment area 440 through a first spiral feeder 441, and stirring and mixing by using a third stirrer 442 to perform a preliminary flocculation reaction; then, another first electric gate valve 420 is opened to enable the primarily flocculated sewage to enter a third treatment area 450, a polymeric flocculant is added into the third treatment area 450 through a second spiral conveyor 451, stirring and mixing are carried out by a fourth stirrer 452, flocculation reaction is carried out again to enable sodium ions to be removed from lignin, charged lignin particles damage an electric double layer on the surface, a repulsive energy peak is reduced, colloidal stability is damaged, and terephthalic acid is separated out.
Referring to fig. 1 and 5, an air flotation sedimentation tank 500 is connected with a liquid outlet end of a third liquid guide pipe 460 through a pipeline, a slag scraping machine 510 is installed on a side portion of the air flotation sedimentation tank 500, a first sludge pump 520 is installed on a side portion of the air flotation sedimentation tank 500, a feed end of the first sludge pump 520 extends into a lower portion of an inner side of the air flotation sedimentation tank 500, a fourth liquid guide pipe 530 is connected with the side portion of the air flotation sedimentation tank 500, the fourth liquid guide pipe 530 is communicated with the inside of the air flotation sedimentation tank, when the air flotation sedimentation tank is used in a concrete mode, residues floating on the upper portion of the air flotation sedimentation tank 500 are scraped through the slag scraping machine 510, the settled sludge is discharged through the first sludge pump 520, and the fourth liquid.
Referring to fig. 1 and 5, the side of the biochemical tank 600 is communicated with the fourth liquid guide tube 530, the biochemical tank 600 is configured as an anaerobic tank or a contact oxidation tank, and the biochemical tank 600 is used for performing biochemical treatment on sewage to better decompose organic matters.
Referring to fig. 1 and 5, a secondary sedimentation tank 700 is installed at a side portion of a biochemical tank 600, a sixth liquid guide pipe 601 is installed at a connection portion of the biochemical tank 600 and the secondary sedimentation tank 700, a second electric gate valve 710 is installed at a connection portion of the secondary sedimentation tank 700 and the biochemical tank 600, the sixth liquid guide pipe 601 is opposite to a side portion of the second electric gate valve 710, a second sludge pump 720 is installed at a side portion of the secondary sedimentation tank 700, a feed end of the second sludge pump 720 extends into a lower portion of an inner side of the secondary sedimentation tank 700, and a fifth liquid guide pipe 730 is installed at a side portion of the secondary sedimentation tank 700.
Referring to fig. 1, in the present embodiment, the integrated printing and dyeing wastewater treatment system further includes a pasteur metering tank 800, a sludge concentration tank 900 and a spiral shell stacking sludge dewatering machine 1000, the pasteur metering tank 800 is communicated with a fifth liquid guide tube 730, the sludge concentration tank 900 is connected with the discharge end of the first sludge pump 520, the sludge concentration tank 900 is connected with the discharge end of the second sludge pump 720, a third sludge pump 910 is installed inside the sludge concentration tank 900, the feed end of the third sludge pump 910 extends into the lower portion of the inner side of the sludge concentration tank 900, the discharge end of the third sludge pump 910 is connected with the feed end of the spiral shell stacking sludge dewatering machine 1000 through a pipeline, the drain end of the sludge concentration tank 900 is connected with the lateral portion of the grid channel 100 through a pipeline, the drain end of the spiral shell stacking sludge dewatering machine 1000 is connected with the lateral portion of the grid channel 100 through a pipeline, when in use, the pasteur metering tank 800 meters the discharged up-to-standard water, the sludge concentration tank 900 concentrates the sludge, and the sewage generated by concentration is introduced into the grid channel 100 again, the sludge is dehydrated through the spiral-stacked sludge dehydrator 1000, the sewage generated in the dehydration process is introduced into the grid channel 100 again, the treatment of the sludge is integrally realized, and the sewage in the sludge is introduced into the grid channel 100 again for the next treatment.
In summary, the front end chemical treatment of the printing and dyeing wastewater is formed by the acid adjusting tank 200, the inclined tube sedimentation tank 300, the dissolved air flotation tank 400 and the air flotation sedimentation tank 500, so that the dissolved lignin is subjected to sodium ion removal to form insoluble substances, the charged lignin particles destroy the electric double layer on the surface, the repulsive energy peak is reduced, the colloidal stability is destroyed, the adsorption bridge is formed into flocs, and finally the flocs are removed from the water, the subsequent biochemical load is reduced, and the stable water outlet is ensured; the terephthalic acid contained in the alkali deweighting process of the terylene imitated silk can be treated, the slurry is separated out, and the treatment of organic matters is realized; the acid regulating tank 200 and the inclined tube sedimentation tank 300 are arranged at the front end of the dissolved air floatation tank 400, and the air floatation sedimentation tank 500 before entering the biochemical tank 600 is added, so that the COD removal efficiency is about twice of that of a single physicochemical system and can reach 40% at most, and the stable operation of a subsequent biochemical tank is guaranteed; through actual measurement and calculation, the integral ton treatment cost of the technical scheme is 0.8 yuan/ton to 1.0 yuan/ton, and is lower than that of the existing Fenton reagent oxidation method (the cost is 1.2 yuan/ton).
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. The comprehensive printing and dyeing wastewater treatment system is characterized by comprising
The inner side of the grating channel is provided with a rotary grating, the side part of the grating channel is provided with a water pump, and the water inlet end of the water pump extends into the grating channel;
the acid adjusting tank is connected with the liquid outlet end of the water pump through a pipeline, a first stirrer is installed on the side of the acid adjusting tank, the stirring end of the first stirrer extends into the acid adjusting tank, a first liquid guide pipe is connected to the side of the acid adjusting tank, and the first liquid guide pipe is communicated with the interior of the acid adjusting tank;
the inclined tube sedimentation tank is communicated with the liquid outlet end of the first liquid guide tube, the upper side part of the inclined tube sedimentation tank is connected with a second liquid guide tube, and the second liquid guide tube is communicated with the inside of the inclined tube sedimentation tank;
the dissolved air flotation tank is internally provided with two clapboards, the middle parts of the two clapboards are respectively provided with a first electric gate valve, the clapboards divide the dissolved air flotation tank into a first treatment area, a second treatment area and a third treatment area, a second liquid guide pipe is communicated with the lateral part of the first treatment area, the lateral part of the dissolved air flotation tank is provided with an alkali adding pump, the liquid outlet end of the alkali adding pump extends into the first treatment area, the lateral part of the dissolved air flotation tank is provided with a second stirrer, the stirring end of the second stirrer extends into the first treatment area, the lateral part of the dissolved air flotation tank is provided with a first spiral conveyer, the discharge end of the first spiral conveyer extends into the second treatment area, the lateral part of the dissolved air flotation tank is provided with a third stirrer, and the stirring end of the third stirrer extends into the second treatment area, a second spiral material conveyer is installed on the side part of the dissolved air floatation tank, the discharge end of the second spiral material conveyer extends into the third treatment area, a fourth stirrer is installed on the side part of the dissolved air floatation tank, the stirring end of the fourth stirrer extends into the third treatment area, a third liquid guide pipe is installed on the side part of the dissolved air floatation tank, and the liquid inlet end of the third liquid guide pipe is communicated with the third treatment area;
the air flotation sedimentation tank is connected with the liquid outlet end of the third liquid guide pipe through a pipeline, a residue scraping machine is installed on the side portion of the air flotation sedimentation tank, a first sludge pump is installed on the side portion of the air flotation sedimentation tank, the feeding end of the first sludge pump extends into the lower portion of the inner side of the air flotation sedimentation tank, a fourth liquid guide pipe is connected to the side portion of the air flotation sedimentation tank, and the fourth liquid guide pipe is communicated with the interior of the air flotation sedimentation tank;
the side part of the biochemical tank is communicated with the fourth liquid guide pipe;
the secondary sedimentation tank is arranged on the side part of the biochemical tank, a second electric gate valve is arranged at the connecting part of the secondary sedimentation tank and the biochemical tank, a second sludge pump is arranged on the side part of the secondary sedimentation tank, the feeding end of the second sludge pump extends into the lower part of the inner side of the secondary sedimentation tank, and a fifth liquid guide pipe is arranged on the side part of the secondary sedimentation tank.
2. The integrated printing and dyeing wastewater treatment system according to claim 1, wherein a first pH meter is installed on the side of the acid adjusting tank, an acid liquid pump is installed on the side of the acid adjusting tank, and the liquid outlet end of the acid liquid pump extends into the acid adjusting tank.
3. The integrated printing and dyeing wastewater treatment system according to claim 1, wherein diversion holes are formed in the parts of the two partition plates adjacent to the first electric gate valve.
4. The integrated printing and dyeing wastewater treatment system according to claim 1, wherein the biochemical tank is configured as an anaerobic tank and a contact oxidation tank.
5. The integrated printing and dyeing wastewater treatment system according to claim 1, wherein a fifth liquid guide pipe is connected between the biochemical tank and the secondary sedimentation tank, and the fifth liquid guide pipe is opposite to the side part of the second electric gate valve.
6. The integrated printing and dyeing wastewater treatment system of claim 5, further comprising a pasteurization tank in communication with the sixth liquid conduit.
7. The comprehensive printing and dyeing wastewater treatment system according to claim 1, further comprising a sludge concentration tank and a screw-stacking sludge dewatering machine, wherein the sludge concentration tank is connected with the discharge end of the first sludge pump, the sludge concentration tank is connected with the discharge end of the second sludge pump, a third sludge pump is installed inside the sludge concentration tank, the feed end of the third sludge pump extends into the lower part of the inner side of the sludge concentration tank, and the discharge end of the third sludge pump is connected with the feed end of the screw-stacking sludge dewatering machine through a pipeline.
8. The integrated printing and dyeing wastewater treatment system according to claim 7, wherein the discharge end of the sludge thickener is connected with the side part of the grid channel through a pipeline, and the discharge end of the spiral sludge dehydrator is connected with the side part of the grid channel through a pipeline.
9. The integrated printing and dyeing wastewater treatment system according to claim 1, characterized in that a second pH meter is installed on the side of the dissolved air floatation tank, and the detection end of the second pH meter extends into the first treatment area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202021279899.2U CN213085766U (en) | 2020-07-04 | 2020-07-04 | Comprehensive printing and dyeing wastewater treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021279899.2U CN213085766U (en) | 2020-07-04 | 2020-07-04 | Comprehensive printing and dyeing wastewater treatment system |
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| CN213085766U true CN213085766U (en) | 2021-04-30 |
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