CN111003761A - Printing and dyeing wastewater treatment system and method - Google Patents
Printing and dyeing wastewater treatment system and method Download PDFInfo
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- CN111003761A CN111003761A CN202010162102.9A CN202010162102A CN111003761A CN 111003761 A CN111003761 A CN 111003761A CN 202010162102 A CN202010162102 A CN 202010162102A CN 111003761 A CN111003761 A CN 111003761A
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- printing
- dyeing wastewater
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/4618—Supplying or removing reactants or electrolyte
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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
- C02F2303/14—Maintenance of water treatment installations
Abstract
The invention relates to the technical field of printing and dyeing wastewater treatment, and discloses a printing and dyeing wastewater treatment system and method. The treatment system comprises a micro-electrolysis reactor for treating the printing and dyeing wastewater, wherein the micro-electrolysis reactor comprises a tank body, a sewage inlet pipe for leading the printing and dyeing wastewater into the tank body from top to bottom, a plurality of micro-electrolysis treatment components for carrying out electrolysis treatment on the printing and dyeing wastewater and a plurality of first gas distribution components for enabling oxidizing gas to uniformly pass through the micro-electrolysis treatment components; the processing method comprises the following steps: install liquid density sensor additional in the collecting vat to set for and sink wadding thing density standard value, detect liquid density data, compare it with sinking wadding thing density standard value, start the blowdown subassembly according to the contrast result and carry out the blowdown, can distribute gas through first gas distribution subassembly to the oxidizing gas who pours into the jar internal, can make the even little electrolytic treatment subassembly that passes through of oxidizing gas, when improving aeration effect, still can avoid sinking wadding thing easy accumulational problem in little electrolytic treatment subassembly.
Description
Technical Field
The invention relates to the technical field of printing and dyeing wastewater treatment, in particular to a printing and dyeing wastewater treatment system and method.
Background
With the continuous deepening of the industrialization process, global pollution increasingly destroys the ecological balance formed by the earth biosphere for hundreds of millions of years, and threatens the living environment of human beings, according to the statistics and investigation of the current situation of water environment pollution of China by the national general bureau of environmental protection, rivers, lakes and offshore basins of China are generally polluted in different degrees, and generally show an aggravating trend, and the main factors causing aggravation of pollution are industrial wastewater and domestic sewage. The textile printing and dyeing industry discharges a large amount of waste water and waste residues in the production process to pollute the environment, wherein the pollution of the waste water discharged in the production process of the printing and dyeing industry to the environment is the most serious.
The common treatment modes of the printing and dyeing wastewater comprise a biological method, an electrolytic method, an adsorption method and the like, when the acid printing and dyeing dye is treated by the electrolytic method at present, the printing and dyeing wastewater gradually passes through the micro-electrolytic filler from bottom to top, a certain amount of floccule can be generated after the micro-electrolytic filler is used for treating the acid printing and dyeing dye, and the generated floccule can easily fall into gaps of the micro-electrolytic filler in a long-time use process, so that the circulation of the printing and dyeing wastewater can be influenced, and the contact between the floccule and the printing and dyeing wastewater can be reduced by covering the surface of the micro-electrolytic filler, so that the wastewater treatment efficiency is greatly reduced.
Disclosure of Invention
Therefore, the embodiment of the invention provides a printing and dyeing wastewater treatment system and a printing and dyeing wastewater treatment method, which aim to solve the problems that floccules generated by printing and dyeing wastewater passing through micro-electrolysis filler in the prior art are easy to accumulate in gaps of the micro-electrolysis filler, the circulation of the printing and dyeing wastewater is influenced, and the floccules cover the surface of the micro-electrolysis filler, so that the wastewater treatment efficiency is greatly reduced.
In order to achieve the above object, an embodiment of the present invention provides the following:
a printing and dyeing wastewater treatment system comprises a micro-electrolysis reactor for treating printing and dyeing wastewater, wherein the micro-electrolysis reactor comprises a tank body, a sewage inlet pipe for leading the printing and dyeing wastewater into the tank body from top to bottom, a plurality of micro-electrolysis treatment components for carrying out electrolysis treatment on the printing and dyeing wastewater and a plurality of first gas distribution components for enabling oxidizing gas to uniformly pass through the micro-electrolysis treatment components;
the micro-electrolysis treatment assembly and the first gas distribution assembly are arranged alternately, a second gas distribution assembly is arranged between the outlet end of the sewage inlet pipe and the micro-electrolysis treatment assembly at the lowest end of the tank body, the second gas distribution assembly is connected with an external air pump of an air pipe, a guide pipe is sleeved on the sewage inlet pipe, a collecting plate used for collecting floccules generated by printing and dyeing wastewater when passing through the micro-electrolysis treatment assembly is arranged on one side, opposite to the flowing direction of the printing and dyeing wastewater, of the first gas distribution assembly, a discharging assembly which is arranged under the guide pipe and used for discharging the floccules is arranged in the tank body.
As a preferable scheme of the invention, a water guide ring in an annular structure is connected to a water outlet end of the sewage inlet pipe, a plurality of water distribution pipes are arranged on one side of the water guide ring away from the sewage inlet pipe, the plurality of water distribution pipes are arranged in an annular array around the central axis of the water guide ring, and a plurality of water distribution holes are arranged on one side of the water distribution pipes facing the printing and dyeing wastewater in the flowing direction at equal intervals.
As a preferable scheme of the invention, the first gas distribution assembly comprises a gas guide tube with an annular structure, one side of the gas guide tube, which is opposite to the flowing direction of the printing and dyeing wastewater, is connected with a collecting ring which is used for collecting the oxidation gas discharged by the second gas distribution assembly and has an annular structure, a plurality of gas distribution tubes are connected on the gas guide tube at equal intervals along the transverse direction, and gas distribution holes for exhausting are arranged on the gas distribution tubes.
In a preferred embodiment of the present invention, the cross-section of the gas distribution pipe is gradually increased from the two ends toward the middle position.
As a preferable scheme of the present invention, the first air distribution assembly and the second air distribution assembly have the same structure, and the second air distribution assembly is not provided with a collecting ring.
In a preferred embodiment of the present invention, the collecting plate has a conical structure, and the width of the collecting ring is greater than the difference between the radius of the tank body and the maximum radius of the collecting plate.
As a preferable scheme of the invention, the micro-electrolysis processing assembly comprises a screen plate provided with dense through holes, a plurality of accommodating plates which are intersected to form a grid-shaped structure are arranged on the screen plate, micro-electrolysis fillers are filled in a grid-shaped space formed by the accommodating plates, and a diversion trench is further arranged on the accommodating plates.
According to a preferable scheme of the invention, the sewage discharge assembly comprises a collecting tank positioned below the guide pipe, a stirring rotor wing is rotatably connected to the bottom of the collecting tank through a hollow pipe, the hollow pipe penetrates through the stirring rotor wing and is driven by a driving motor, one end of the hollow pipe, far away from the stirring rotor wing, is connected with a pipeline connected with an external sewage discharge pump through a rotary joint, one end of the opening of the collecting tank is further provided with a vent pipe communicated with the outside through a one-way valve and used for relieving pressure during sewage discharge, and two sides of the opening of the collecting tank are further provided with sliding plates which are driven by electric push rods and used for sealing the collecting tank.
A printing and dyeing wastewater treatment method comprises the following steps:
s100, additionally arranging a liquid density sensor at a position, below the sealing plate, of the collecting tank, and setting a density standard value of the flocs;
s200, detecting density data of the printing and dyeing wastewater in the collecting tank through a liquid density sensor, and comparing the detected density data with a set density standard value of the flocs;
s300, judging the amount of the flocculates in the collecting tank according to the comparison result, starting the sewage discharge assembly according to the judgment result, and finishing the cleaning of the flocculates in the collecting tank
As a preferable scheme of the present invention, the conditions for starting the electric push rod to drive the sliding plate to seal the collecting groove are as follows: the detection data of the liquid density sensor is greater than a set density standard value of the flocs;
the conditions for starting the driving motor to drive the stirring rotor to stir the floccules in the collecting tank are as follows: the sliding plate seals the collecting groove;
the conditions for starting the external sewage pump to discharge sewage are as follows: the stirring rotor rotates for 5-10 seconds.
The embodiment of the invention has the following advantages:
when the device is used, the first gas distribution assembly can collect the oxidizing gas sprayed by the second gas distribution assembly, and the oxidizing gas can further uniformly pass through the micro-electrolysis treatment assembly, so that the aeration effect can be improved, the oxidizing gas can drive the surrounding water flow to move in the rising process, the floc covering the surface of the micro-electrolysis filler can be further rolled up, the floc can be collected through the collecting plate, and the problem that the floc covering the micro-electrolysis filler affects the wastewater treatment efficiency can be effectively avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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 should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of a water distribution pipe according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a first air distribution assembly according to an embodiment of the present invention;
FIG. 4 is a perspective view of a micro-electrolysis processing assembly in an embodiment of the present invention;
fig. 5 is a schematic structural view of an air distribution pipe in the embodiment of the present invention.
In the figure:
1-tank body; 2-sewage inlet pipe; 3-a micro-electrolysis treatment assembly; 4-a first gas distribution assembly; 5-a second gas distribution assembly; 6-a catheter; 7-a collection plate; 8-open slots; 9-a blowdown assembly;
201-water guide ring; 202-water distribution pipe; 203-water distribution holes;
301-mesh plate; 302-a containment plate; 303-micro-electrolysis filler; 304-a diversion trench;
401-airway tube; 402-a collection ring; 403-gas distribution pipe; 404-air distribution holes;
901-a collection tank; 902-stirring rotor; 903-a breather pipe; 904 — sliding plate.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 5, the present invention provides a printing and dyeing wastewater treatment system, which comprises a micro-electrolysis reactor for treating printing and dyeing wastewater, wherein the micro-electrolysis reactor comprises a tank body 1, a sewage inlet pipe 2 for guiding the printing and dyeing wastewater into the tank body 1 from top to bottom, a plurality of micro-electrolysis treatment components 3 for performing electrolysis treatment on the printing and dyeing wastewater, and a plurality of first gas distribution components 4 for enabling oxidizing gas to uniformly pass through the micro-electrolysis treatment components 3, and the inner wall of the tank body 1 is coated with anti-corrosion glass flake daub to ensure that the printing and dyeing wastewater cannot directly corrode the tank body 1 when purifying the printing and dyeing wastewater, so that the service life of the tank body 1 is greatly reduced.
The micro-electrolysis processing assembly 3 comprises a screen plate 301 with dense through holes, a plurality of accommodating plates 302 which are intersected into a grid-shaped structure are arranged on the screen plate 301, micro-electrolysis fillers 303 are filled in a grid-shaped space formed by the accommodating plates 302, and the height of the accommodating plates 302 is preferably not more than 30cm so as to prevent the problem that floccules are easy to accumulate in the electrolysis fillers 303.
As shown in fig. 4, the receiving plate 302 is further provided with a guiding groove 304, a grid-like structure formed by the receiving plate 302, which is mainly used for dividing the micro-electrolysis filler 303 into a plurality of purification blocks, thereby facilitating the subsequent replacement, the diameter of the through holes on the screen plate 301 is smaller than the size of the micro-electrolysis filler particles, so that the problem that the micro-electrolysis filler 303 falls from the through holes on the screen plate 301 is avoided, the flow guide grooves 304 are arranged, so that when the rising oxidizing gas passes through the micro-electrolysis filler 303, the water flow rolled by the gas rising can be guided by the diversion trench 304 to move towards the designated direction, and furthermore, the floc deposited on the surface of the micro-electrolysis filler 303 can be fed to the lower belt by the flow of the water flow, can effectively avoid the problem that the floccules are accumulated in the gaps of the micro-electrolysis filler 303 to cause gradual reduction of the treatment of the printing and dyeing wastewater.
As shown in fig. 3, the first gas distribution assembly 4 includes a gas guide tube 401 having an annular structure, and one side of the gas guide tube 401, which is away from the flowing direction of the printing and dyeing wastewater, is connected with a collecting ring 402 having an annular structure and used for collecting the oxidizing gas discharged by the second gas distribution assembly 5, the gas guide tube 401 is connected with a plurality of gas distribution tubes 403 at equal intervals along the transverse direction, and gas distribution holes 404 for exhausting are formed in the gas distribution tubes 403, the gas distribution holes 404 formed in the gas distribution tubes 403 are arranged corresponding to the micro-electrolysis treatment assembly 3, so that the oxidizing gas introduced into the tank 1 can uniformly pass through the micro-electrolysis treatment assembly 3, and the efficiency of cleaning the surface deposited flocs of the micro-electrolysis filler 303 can be effectively improved while the oxidizing effect is improved.
It should be added that an isolation net with a grid-shaped structure is arranged between two adjacent air distribution pipes 403, so that the flow of the printing and dyeing wastewater above the second air distribution assembly 5 is isolated while the normal passing of the printing and dyeing wastewater and the deposited floccules is ensured, and the problem that the deposited floccules deposited below the second air distribution assembly 5 are rolled up again due to the fact that the flow of the printing and dyeing wastewater is driven by the oxidizing gas in the rising process is avoided.
As shown in fig. 5, the cross section of the gas distribution pipe 403 is gradually enlarged from the two ends to the middle position, that is, when the oxidizing gas enters the gas distribution pipe from the gas guide pipe 401, the bubbles move towards the middle position thereof due to the shape of the gas distribution pipe 403 under the action of pressure, and further in the moving process, the gas inside the gas distribution pipe 403 can be gradually released through the gas distribution holes 404, so that the problem of uneven gas distribution caused by the fact that the oxidizing gas is concentrated in a certain area when the gas distribution pipe is used can be effectively avoided.
As shown in fig. 1, the micro-electrolysis treatment assembly 3 and the first gas distribution assembly 4 are arranged alternately, the number of the micro-electrolysis treatment assembly 3 is preferably 3, a plurality of micro-electrolysis treatment assemblies 3 are matched, printing and dyeing wastewater can be treated step by step, a second gas distribution assembly 5 is arranged between the outlet end of the sewage inlet pipe 2 and the micro-electrolysis treatment assembly 3 at the lowest end of the tank body 1, the second gas distribution assembly 5 is connected with an external air pump through an air pipe, a guide pipe 6 is sleeved on the sewage inlet pipe 2, a collecting plate 7 used for collecting floccules generated by the printing and dyeing wastewater when passing through the micro-electrolysis treatment assembly is arranged on one side of the guide pipe 6, which is opposite to the flowing direction of the printing and dyeing wastewater, of the first gas distribution assembly 4 is arranged on the guide pipe 6, the first gas distribution assembly 4 is identical to the second gas distribution assembly 5 in structure, and the second gas distribution assembly 5 is not.
The difference in radius between the conduit 6 and the sewage inlet pipe 2 is preferably 3-6cm here, ensuring that there is enough space between them for the flocs to settle stably to the bottom of the tank 1.
The collecting plate 7 has a tapered structure, and the width of the collecting ring 402 is larger than the difference between the radius of the tank 1 and the maximum radius of the collecting plate 7, so that when the oxidizing gas rises, a part of the oxidizing gas cannot be collected by the collecting plate 402, and it should be noted that the outer side of the collecting ring 402 is preferably in close contact with the inner wall of the tank 1 when installed, thereby further improving the efficiency of collecting the oxidizing gas.
That is, when the gas rises to the position of the collecting plate 7 in use, the rising oxidation gas can be guided to the edge position of the collecting plate 7 due to the shape of the gas, the gas can rise from the edge position of the collecting plate 7, and then the collection ring 402 in the second gas distribution assembly 5 can collect the oxidation gas into the gas distribution pipe 403, so that the oxidation gas is further distributed again, and the oxidation gas can uniformly pass through each micro-electrolysis treatment assembly 3.
Offer the open slot 8 corresponding with the collecting plate 7 on the pipe 6, and still be provided with in the jar body 1 under the pipe 6 and be used for discharging the blowdown subassembly 9 of sinking the wadding thing, mix the wadding thing that sinks that rivers drove and can progressively subside when the oxidized gas rises, when subsiding to collecting plate 7, it can be along the slope that collecting plate 7 had, progressively landing to being in the pipe 6 of central point department of putting, and then accessible pipe 6 carries out progressively subsides to being located the blowdown subassembly 9 of jar body 1 bottom, can make things convenient for follow-up to carry out unified clearance to it.
As shown in fig. 2, a water guide ring 201 with an annular structure is connected to the water outlet end of the sewage inlet pipe 2, a plurality of water distribution pipes 202 are arranged on one side of the water guide ring 201 away from the sewage inlet pipe 2, the plurality of water distribution pipes 202 are arranged in an annular array around the central axis of the water guide ring 201, a plurality of water distribution holes 203 are arranged on one side of the water distribution pipes 202 facing the printing and dyeing wastewater in the flowing direction at equal intervals, the arranged water distribution pipes 202 can enable the printing and dyeing wastewater to uniformly enter the tank body 1, and meanwhile, when the printing and dyeing wastewater is discharged from the water distribution holes 203, the printing and dyeing wastewater can be fully aerated by matching with a second gas distribution assembly 5 arranged above the water distribution pipes 202, so that the treatment effect of the printing and dyeing wastewater when the printing and dyeing wastewater passes.
As shown in fig. 1, the drainage assembly 9 includes a collection tank 901 located below the conduit 6, and a stirring rotor 902 is rotatably connected to the bottom of the collection tank 901 through a hollow tube, the hollow tube is disposed to penetrate through the stirring rotor 902 and is driven by a driving motor, and one end of the hollow tube, which is far away from the stirring rotor 902, is connected to a pipeline connected to an external drainage pump through a rotary joint, so as to ensure that the deposited flocs in the collection tank 901 can be cleaned up by the hollow tube when the external drainage pump is started, a vent pipe 903, which is communicated with the outside through a one-way valve and is used for relieving pressure during drainage, is further provided at one end of an opening of the collection tank 901, sliding plates 904, which are driven by an electric push rod and are used for sealing the collection tank 901, may be provided at opposite sides of the two sliding plates 904, i.e. when it, it can be judged that the collection gutter 901 has been sealed by the sliding plate 904.
During the use, the heavy wadding thing of collecting through the collecting plate can directly get into to the collecting vat in through the pipe, when needs are cleared up the heavy wadding thing in the collecting vat, at first need start electric putter, promote the motion of sliding plate 904 by electric promotion push rod, make two sliding plates 904 can seal up collecting vat 901, further then drive the hollow tube motion through driving motor, drive the motion of stirring rotor 902 by the hollow tube, thereby accessible stirring rotor 902 stirs heavy wadding thing and printing and dyeing wastewater in the collecting vat, make its even slow and together, later when starting external dredge pump, then can be with smooth will sink the wadding thing clean up, avoid when the blowdown, it piles up and the problem that can't arrange the clean to appear in the corner department of collecting vat easily to sink the wadding thing.
Here, in the in-process of blowdown, breather pipe 903 can be connected through the check valve and external, make external air can get into in the collecting vat 901, guarantee that collecting vat 901 can be in relative balanced state with external atmospheric pressure, in order to avoid when the heavy wadding thing in the collecting vat 901 is got through external blowdown pump extraction, can be difficult to the problem of taking it out, and under the condition of the heavy wadding thing of normal collection, breather pipe 903 can be sealed to its check valve, in order to avoid printing and dyeing wastewater can pass through the problem that the breather pipe reveals, and the rotary joint who is connected with the hollow tube then is used for under rotatory state, guarantee the normal clear of blowdown.
The embodiment of the invention also provides a printing and dyeing wastewater treatment method implemented by applying the printing and dyeing wastewater treatment device, which comprises the following steps:
s100, additionally arranging a liquid density sensor at a position, below the sealing plate, of the collecting tank, and setting a density standard value of the flocs;
s200, detecting density data of the printing and dyeing wastewater in the collecting tank through a liquid density sensor, and comparing the detected density data with a set density standard value of the flocs;
s300, judging the amount of the flocculates in the collecting tank according to the comparison result, and starting the sewage discharge assembly according to the judgment result to finish cleaning the flocculates in the collecting tank.
In order to facilitate the real-time observation of the accumulation condition of the flocs in the collecting tank 903 by the user, when the liquid density sensor is additionally arranged, a plurality of flocs can be arranged at equal intervals from bottom to top, namely, the accommodating condition of the flocs in the collecting tank is judged by detecting the liquid density change at different positions, so that the user can make corresponding adjustment on the whole sewage discharge assembly 9 according to the judgment result.
The conditions for starting the electric push rod to drive the sliding plate to seal the collecting tank are as follows: the detection data of the liquid density sensor is greater than a set density standard value of the flocs;
the conditions of the flocs in the collecting tank are that the driving motor is started to drive the stirring rotor to stir: the sliding plate seals the collecting groove;
the conditions for starting the external sewage pump to discharge sewage are as follows: the stirring rotor rotates for 5-10 seconds.
The external sewage pump is started after the stirring rotor 902 rotates for 5-10 seconds, and sufficient time is reserved mainly to enable the floccule to be uniformly mixed with the printing and dyeing waste liquid, so that the whole waste liquid is conveniently discharged subsequently.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. A printing and dyeing wastewater treatment system comprises a micro-electrolysis reactor for treating printing and dyeing wastewater, and is characterized in that the micro-electrolysis reactor comprises a tank body (1), a sewage inlet pipe (2) which is used for leading the printing and dyeing wastewater into the tank body (1) from top to bottom, a plurality of micro-electrolysis treatment components (3) for carrying out electrolysis treatment on the printing and dyeing wastewater, and a plurality of first gas distribution components (4) for enabling oxidizing gas to uniformly pass through the micro-electrolysis treatment components (3);
the micro-electrolysis processing component (3) and the first gas distribution component (4) are arranged at intervals, and a second gas distribution component (5) is arranged between the outlet end of the sewage inlet pipe (2) and the micro-electrolysis treatment component (3) at the lowest end of the tank body (1), the second gas distribution component (5) is connected with an air pump outside the air pipe, a guide pipe (6) is sleeved on the sewage inlet pipe (2), a collecting plate (7) used for collecting floccules generated when the printing and dyeing wastewater passes through the micro-electrolysis treatment component (3) is arranged on one side of the first gas distribution component (4) opposite to the flowing direction of the printing and dyeing sewage on the guide pipe (6), an open slot (8) corresponding to the collecting plate (7) is arranged on the conduit (6), and a sewage discharging assembly (9) which is arranged under the guide pipe (6) and is used for discharging the flocculated substances is also arranged in the tank body (1).
2. The printing and dyeing wastewater treatment system according to claim 1, characterized in that a water guide ring (201) with an annular structure is connected to the water outlet end of the wastewater inlet pipe (2), a plurality of water distribution pipes (202) are arranged on one side of the water guide ring (201) far away from the wastewater inlet pipe (2), the plurality of water distribution pipes (202) are arranged in an annular array around the central axis of the water guide ring (201), and a plurality of water distribution holes (203) are arranged on one side of the water distribution pipes (202) facing the printing and dyeing wastewater flow direction at equal intervals.
3. The printing and dyeing wastewater treatment system according to claim 1, characterized in that the first gas distribution assembly (4) comprises a gas guide pipe (401) with an annular structure, a collecting ring (402) which is used for collecting the oxidizing gas discharged by the second gas distribution assembly (5) and has an annular structure is connected to one side of the gas guide pipe (401) opposite to the flowing direction of the printing and dyeing wastewater, a plurality of gas distribution pipes (403) are connected to the gas guide pipe (401) at equal intervals along the transverse direction, and gas distribution holes (404) used for exhausting are arranged on the gas distribution pipes (403).
4. The printing and dyeing wastewater treatment system according to claim 3, characterized in that the cross section of the gas distribution pipe (403) is gradually increased toward the middle position.
5. A printing and dyeing wastewater treatment system according to claim 3, characterized in that the first gas distribution unit (4) and the second gas distribution unit (5) are identical in structure, and the second gas distribution unit (5) is not provided with a collecting ring (402).
6. A printing and dyeing wastewater treatment system according to claim 3, characterized in that the collecting plate (7) is of conical configuration and the width of the collecting ring (402) is greater than the difference between the radius of the tank (1) and the maximum radius of the collecting plate (7).
7. The printing and dyeing wastewater treatment system according to claim 1, characterized in that the micro-electrolysis treatment assembly (3) comprises a screen plate (301) with dense through holes, a plurality of accommodating plates (302) which are intersected into a grid-shaped structure are arranged on the screen plate (301), micro-electrolysis fillers (303) are filled in a grid-shaped space formed by the accommodating plates (302), and a diversion trench (304) is further arranged on the accommodating plates (302).
8. The printing and dyeing wastewater treatment system according to claim 1, characterized in that the sewage discharge assembly (9) comprises a collecting tank (901) located below the conduit (6), a stirring rotor (902) is rotatably connected to the bottom of the collecting tank (901) through a hollow pipe, the hollow pipe is arranged to penetrate through the stirring rotor (902) and driven by a driving motor, one end of the hollow pipe, far away from the stirring rotor (902), is connected with a pipeline connected with an external sewage discharge pump through a rotary joint, a vent pipe (903) communicated with the outside through a one-way valve and used for relieving pressure during sewage discharge is further arranged at one end of the opening of the collecting tank (901), and sliding plates (904) driven by electric push rods and used for sealing the collecting tank (901) are further arranged on two sides of the opening of the collecting tank (901).
9. A printing and dyeing wastewater treatment method applied to the printing and dyeing wastewater treatment apparatus according to claim 8, comprising the steps of:
s100, additionally arranging a liquid density sensor at a position, below the sealing plate, of the collecting tank, and setting a density standard value of the flocs;
s200, detecting density data of the printing and dyeing wastewater in the collecting tank through a liquid density sensor, and comparing the detected density data with a set density standard value of the flocs;
s300, judging the amount of the flocculates in the collecting tank according to the comparison result, and starting the sewage discharge assembly according to the judgment result to finish cleaning the flocculates in the collecting tank.
10. The printing and dyeing wastewater treatment method according to claim 9, characterized in that the conditions for starting the electric push rod to drive the sliding plate to seal the collecting tank are as follows: the detection data of the liquid density sensor is greater than a set density standard value of the flocs;
the conditions for starting the driving motor to drive the stirring rotor to stir the floccules in the collecting tank are as follows: the sliding plate seals the collecting groove;
the conditions for starting the external sewage pump to discharge sewage are as follows: the stirring rotor rotates for 5-10 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010162102.9A CN111003761B (en) | 2020-03-10 | 2020-03-10 | Printing and dyeing wastewater treatment system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010162102.9A CN111003761B (en) | 2020-03-10 | 2020-03-10 | Printing and dyeing wastewater treatment system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111003761A true CN111003761A (en) | 2020-04-14 |
| CN111003761B CN111003761B (en) | 2020-06-05 |
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