CN115385481A - Processing device, system and control method for banknote printing wastewater - Google Patents
Processing device, system and control method for banknote printing wastewater Download PDFInfo
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- CN115385481A CN115385481A CN202211101439.4A CN202211101439A CN115385481A CN 115385481 A CN115385481 A CN 115385481A CN 202211101439 A CN202211101439 A CN 202211101439A CN 115385481 A CN115385481 A CN 115385481A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
Abstract
The invention relates to a treatment device of money printing wastewater, which comprises: the system comprises an acid tank storage tank, a flocculant storage tank, a reaction tank and a transition tank, wherein a chemical outlet of the flocculant storage tank is connected with a flocculant feeding end of the reaction tank; a flocculating agent storage tank stirrer is arranged on the flocculating agent storage tank; the medicine outlet of the acid tank storage tank is connected with the sulfuric acid feeding end of the reaction tank; the liquid inlet end of the reaction tank is connected with the outlet end of the wastewater concentrated liquid pool through a slurry pump; the liquid inlet end of the transition tank is connected with the drain outlet of the reaction tank, the drain outlet of the transition tank is communicated with the feed inlet of the dehydrator, and the main motor of the dehydrator is connected with the hydraulic station; the clear liquid outlet of the dehydrator is connected with the clear liquid tank; after adopting above-mentioned structure, its beneficial effect is: the integrated system for processing the banknote printing wastewater is suitable for processing the banknote printing wastewater, has higher organic pollutant content, is alkaline, has higher chromaticity, has high system integration, intellectualization and modularization degree, is beneficial to converting the technology into integrated equipment, and saves the space.
Description
Technical Field
The invention belongs to the technical field of wastewater treatment, and particularly relates to a treatment device, a treatment system and a control method for banknote printing wastewater.
Background
The banknote printing wastewater is a kind of industrial wastewater with high concentration of organic pollutants generated in the production process of the banknote printing industry, and comprises printing plate waste liquid, banknote printing wastewater, concentrated solution and other related cleaning wastewater. The gravure press printing waste liquid is one of main waste water of a bank note printing factory, and according to incomplete statistics, the discharge amount of the printing waste liquid in China is up to more than ten thousand tons every year at present. The waste wiping solution has complex components, contains various chemical substances which are difficult to treat, such as pigment, resin oil, wax, metal ions, surfactant, organic solvent and the like, has high COD, high pH value and high chroma, has high treatment difficulty, and can cause serious pollution to the natural environment if being discharged into the nature only after simple treatment or no treatment.
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention provides a treatment system and a control method for banknote printing wastewater.
In order to realize the purpose, the invention adopts the following technical scheme:
a treatment device for banknote printing wastewater comprises: an acid tank storage tank, a flocculating agent storage tank, a reaction tank and a transition tank,
a drug outlet of the flocculant storage tank is connected with a flocculant feed end of the reaction tank through a second flocculant adding centrifugal pump; the feeding end of the flocculant storage tank is connected with a first flocculant adding centrifugal pump, and a decolorizing agent enters the flocculant storage tank through the first flocculant adding centrifugal pump; a flocculating agent storage tank stirrer is arranged on the flocculating agent storage tank, and a stirring blade of the flocculating agent storage tank stirrer is positioned in the flocculating agent storage tank;
a medicine outlet of the acid tank storage tank is connected with a sulfuric acid feeding end of the reaction tank through a first sulfuric acid adding centrifugal pump; the medicine inlet end of the acid tank storage tank is connected with a second sulfuric acid adding centrifugal pump, and sulfuric acid enters the acid tank storage tank through the second sulfuric acid adding centrifugal pump;
the liquid inlet end of the reaction tank is connected with the outlet end of the wastewater concentrated liquid pool through a slurry pump; a reaction tank stirrer is arranged on the reaction tank, and a stirring blade of the reaction tank stirrer is positioned in the reaction tank;
the liquid inlet end of the transition tank is connected with a sewage outlet of the reaction tank through a reaction tank conveying screw pump, a transition tank stirrer is arranged on the transition tank, and a stirring blade of the transition tank stirrer is positioned in the transition tank;
the sewage draining outlet of the transition tank is communicated with the feed inlet of the dehydrator through a feeding screw pump,
the main motor of the dehydrator is connected with the hydraulic station, and the hydraulic station provides hydraulic power for the main motor of the dehydrator; a clear liquid outlet of the dehydrator is connected with the clear liquid tank, and a solid slag outlet of the dehydrator is connected with the conveyor and used for conveying dehydrated solid slag; and the outlet of the clear liquid tank is conveyed to the next step for treatment by a submersible pump.
Further, a flocculant flowmeter is arranged between the second flocculant adding centrifugal pump and the reaction tank; and a flocculating agent storage tank liquid level meter is arranged on the flocculating agent storage tank and used for displaying the liquid level of the flocculating agent storage tank.
Further, a sulfuric acid flow meter is arranged between the first sulfuric acid adding centrifugal pump and the reaction tank; and the acid tank storage tank is provided with an acid tank storage tank liquid level meter for displaying the liquid level of the acid tank storage tank.
Further, a slurry flow meter is arranged between the slurry pump and the reaction tank; the reaction tank is connected with a reaction tank vent pipe, and a reaction tank circulating pump is arranged between the reaction tank vent pipe and the reaction tank and is used for circulating a medium in the reaction tank vent pipe into the reaction tank; the reaction tank is provided with a tap water inlet end of the reaction tank, and the tap water inlet end is communicated with a tap water pipe; the reaction tank is provided with a reaction tank overflow port for overflow, and the reaction tank is provided with a reaction tank liquid level meter and a reaction tank PH meter for detecting the liquid level and the PH value in the reaction tank.
Furthermore, a reaction tank outlet electric valve is arranged between the sewage outlet of the reaction tank and the reaction tank conveying screw pump; the transition tank is provided with a tap water inlet end of the transition tank, and the tap water inlet end of the transition tank is communicated with a tap water pipe; the transition tank is provided with a transition tank overflow port for overflow; and the transition tank liquid level meter is arranged on the transition tank and used for detecting the liquid level in the transition tank.
Further, be connected with transition jar blow-down pipe on the transition jar, be equipped with transition jar circulating pump between transition jar blow-down pipe and the transition jar for in sending the medium in the transition jar blow-down pipe back to the transition jar.
Further, a clear liquid tank liquid level meter is arranged on the clear liquid tank and used for displaying the liquid level of the clear liquid tank; a centrifugal machine flowmeter is arranged between the feeding screw pump and the dehydrator; and the sewage outlet of the transition tank is connected with an electric valve at the outlet of the transition tank.
Furthermore, the acid tank storage tank, the flocculating agent storage tank, the reaction tank, the transition tank, the clear liquid tank and the dehydrator are respectively provided with a water inlet end for clear water to enter so as to be cleaned.
The utility model provides a processing system of printing money waste water, includes the processing apparatus of host computer, preliminary treatment the control unit, centrifuge the control unit and printing money waste water, the host computer is connected with preliminary treatment the control unit and centrifuge the control unit through the ethernet, hydraulic pressure station, hydroextractor, conveyer and washing water valve are connected with centrifuge the control unit respectively, jar storage tank, flocculating agent storage tank, retort, transition jar and clear liquid tank are connected with preliminary treatment the control unit respectively.
A control method of a money printing wastewater treatment system is characterized in that an upper computer carries out monitoring and remote operation to realize data storage of historical alarm;
the upper computer sends an instruction to control the pretreatment control unit to perform acid addition, pH regulation, flocculating agent flocculation and mixing, slurry regulation and injection into the transition tank for standby, and when the instantaneous liquid level value in the current tank exceeds a set H (stopping feeding) value, the instantaneous liquid level value can automatically close a related valve or pump; the pretreatment control unit has three control modes of operation, shutdown and remote control;
the centrifugal machine control unit is responsible for the operation and monitoring of the hydraulic station, the dehydrator, the conveyer and the cleaning water valve;
the automatic pretreatment process comprises the following steps:
starting a slurry pump, injecting the slurry into a reaction tank through a slurry flowmeter, adding stock solution from a wastewater concentrated solution pool → when a liquid level meter of the reaction tank reaches a set high level, closing the slurry pump → starting a first sulfuric acid addition centrifugal pump, performing acidification PH blending, and intermittently adding acid, automatically closing the first sulfuric acid addition centrifugal pump when the measurement value of the PH meter of the reaction tank is 9, stopping adding acid, completing PH precise blending → starting a second flocculant addition centrifugal pump, automatically adding a flocculant according to the raw material ratio, closing the second flocculant addition centrifugal pump → starting a reaction tank stirrer → stirring for 30-60 seconds → starting a reaction tank conveying screw pump, and injecting the flocculant into a transition tank for standby; when the liquid level of the reaction tank reaches a set low level, automatically finishing the next round of pretreatment process;
the automatic start sequence of the centrifugal machine control unit: starting a hydraulic station → starting a dewatering machine → starting a conveyor → starting a feeding screw pump, and carrying out a separation process by the dewatering machine;
automatic shutdown sequence of the purge water valve (purge): closing the feed screw pump → slowing down the speed of the dehydrator to the cleaning speed → opening the cleaning water valve for 5-10 minutes → closing the cleaning water valve → closing the conveyor → closing the dehydrator → restarting the dehydrator to the cleaning speed → opening the cleaning water valve for 5-10 minutes → closing the cleaning water valve → closing the dehydrator → closing the hydraulic station.
The treatment system and the control method of the banknote printing wastewater have the beneficial effects that: 1. the integrated system for processing the banknote printing wastewater is suitable for processing the banknote printing wastewater, has higher organic pollutant content, is alkaline, has higher chromaticity, has high system integration, intellectualization and modularization degree, is beneficial to converting the technology into integrated equipment, and saves the space.
2. The outlet water of the banknote printing wastewater treatment integrated system can be recycled, and the integrated process is simple and smooth, is convenient to operate and has wide popularization value.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a control schematic diagram of the present invention.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
The banknote printing wastewater treatment device according to an embodiment of the present invention, as shown in fig. 1, includes: an acid tank storage tank 7, a flocculating agent storage tank 10, a reaction tank 14 and a transition tank 27,
a drug outlet of the flocculant storage tank 10 is connected with a flocculant feeding end of the reaction tank 14 through a second flocculant adding centrifugal pump 17; the second flocculant adding centrifugal pump 17 is composed of two flocculant adding centrifugal pumps which are connected in parallel, so that the two flocculant adding centrifugal pumps are convenient to replace, and if one flocculant adding centrifugal pump is damaged, the other flocculant adding centrifugal pump can be started to work, and the production is not delayed; a flocculant flowmeter 18 is arranged between the second flocculant adding centrifugal pump 17 and the reaction tank 14; the feeding end of the flocculant storage tank 10 is connected with a first flocculant adding centrifugal pump 11, the first flocculant adding centrifugal pump 11 is composed of two flocculant adding centrifugal pumps which are connected in parallel, replacement is convenient, if one flocculant adding centrifugal pump is damaged, the other flocculant adding centrifugal pump can be started to work, production is not delayed, and a decolorizing agent enters the flocculant storage tank 10 through the first flocculant adding centrifugal pump 11; a flocculating agent storage tank stirrer 13 is arranged on the flocculating agent storage tank 10, and a stirring blade of the flocculating agent storage tank stirrer 13 is positioned in the flocculating agent storage tank 10 and used for stirring a flocculating agent; a flocculating agent storage tank liquid level meter 12 is arranged on the flocculating agent storage tank 10 and used for displaying the liquid level of the flocculating agent storage tank 10;
the medicine outlet of the acid tank storage tank 7 is connected with the sulfuric acid feeding end of the reaction tank 14 through a first sulfuric acid adding centrifugal pump 15; a sulfuric acid flowmeter 16 is arranged between the first sulfuric acid adding centrifugal pump 15 and the reaction tank 14; the first sulfuric acid adding centrifugal pump 15 consists of two sulfuric acid adding centrifugal pumps which are connected in parallel, so that the replacement is convenient, and if one sulfuric acid adding centrifugal pump is damaged, the other sulfuric acid adding centrifugal pump can be started to work, and the production is not delayed; the chemical inlet end of the acid tank storage tank 7 is connected with a second sulfuric acid adding centrifugal pump 8, the second sulfuric acid adding centrifugal pump 8 is composed of two sulfuric acid adding centrifugal pumps which are connected in parallel, replacement is convenient, if one sulfuric acid adding centrifugal pump is damaged, the other sulfuric acid adding centrifugal pump can be started to work, and production is not delayed; the sulfuric acid enters an acid tank storage tank 7 through a second sulfuric acid adding centrifugal pump 8, and an acid tank storage tank liquid level meter 9 is arranged on the acid tank storage tank 7 and used for displaying the liquid level of the acid tank storage tank 7;
the liquid inlet end of the reaction tank 14 is connected with the outlet end of the wastewater concentrated liquid pool 41 through a slurry pump 19; a slurry flowmeter 20 is arranged between the slurry pump 19 and the reaction tank 14; a reaction tank vent pipe 42 is connected to the reaction tank 14, and a reaction tank circulating pump 21 is arranged between the reaction tank vent pipe 42 and the reaction tank 14 and used for circulating a medium in the reaction tank vent pipe 42 to the reaction tank 14; a reaction tank tap water inlet end 141 is arranged on the reaction tank 14 and is communicated with a tap water pipe; a reaction tank overflow port 142 is formed in the reaction tank 14 and used for overflowing, and a reaction tank liquid level meter 22 and a reaction tank PH meter 23 are arranged on the reaction tank 14 and used for detecting the liquid level and the PH value in the reaction tank 14; a reaction tank stirrer 25 is arranged on the reaction tank 14, and a stirring blade of the reaction tank stirrer 25 is positioned in the reaction tank 14 and is used for stirring to accelerate the reaction;
the liquid inlet end of the transition tank 27 is connected with the sewage outlet of the reaction tank 14 through a reaction tank conveying screw pump 24, the reaction tank conveying screw pump 24 consists of two reaction tank conveying screw pumps which are connected in parallel, the replacement is convenient, and if one screw pump is damaged, the other screw pump can be started to work without delaying the production; a reaction tank outlet electric valve 26 is arranged between the sewage outlet of the reaction tank 14 and the reaction tank conveying screw pump 24; the transition tank 27 is provided with a transition tank tap water inlet end 271 communicated with a tap water pipe; a transition tank overflow port 272 is arranged on the transition tank 27 and is used for overflowing; a transition tank liquid level meter 29 arranged on the transition tank 27 and used for detecting the liquid level in the transition tank; a transition tank stirrer 31 is arranged on the transition tank 27, and a stirring blade of the transition tank stirrer 31 is positioned in the transition tank 27 and is used for stirring to accelerate the reaction; a transition tank vent pipe 273 is connected to the transition tank 27, and a transition tank circulating pump 28 is arranged between the transition tank vent pipe 273 and the transition tank 27 and used for feeding the medium in the transition tank vent pipe 273 back to the transition tank 27; the sewage discharge outlet of the transition tank 27 is communicated with the feed inlet of the dehydrator 4 through a feed screw pump 30, the feed screw pump 30 consists of two feed screw pumps which are connected in parallel, the replacement is convenient, and if one feed screw pump is damaged, the other feed screw pump can be started to work, so that the production is not delayed; a centrifugal flowmeter 34 is arranged between the feeding screw pump 30 and the dehydrator 4; a sewage outlet of the transition tank 27 is connected with an electrically operated valve 32 of a transition tank outlet;
a main dehydrator motor of the dehydrator 4 is connected with the hydraulic station 3, and the hydraulic station 3 provides hydraulic power for the main dehydrator motor; a clear liquid outlet of the dehydrator 4 is connected with the clear liquid tank 35, and a solid slag outlet of the dehydrator 4 is connected with the conveyor 5 and used for conveying dehydrated solid slag; the outlet of the clear liquid tank 35 is sent to further processing by means of a submersible pump 36.
And a clear liquid tank liquid level meter 37 is arranged on the clear liquid tank 35 and used for displaying the liquid level of the clear liquid tank 35.
And the acid tank storage tank 7, the flocculating agent storage tank 10, the reaction tank 14, the transition tank 27, the clear liquid tank 35 and the dehydrator 4 are respectively provided with a water inlet end for clear water to enter so as to be cleaned.
And a cleaning water valve 40 is arranged at the water inlet end of the dehydrator 4 for opening or closing the inlet of the clear water.
In this embodiment, each connection pipeline is provided with a corresponding stop valve, so as to open or close the circulation of the medium.
The utility model provides a processing system of printing money waste water, as shown in figure 2, includes the processing apparatus of host computer, preliminary treatment the control unit, centrifuge the control unit and printing money waste water, the host computer is connected with preliminary treatment the control unit and centrifuge the control unit through the ethernet, hydraulic pressure station 3, hydroextractor 4, conveyer 5 and washing water valve 40 are connected with centrifuge the control unit respectively, jar storage tank 7, flocculating agent storage tank 10, retort 14, transition jar 27 and clear liquid pond jar 35 are connected with preliminary treatment the control unit respectively.
A control method of a processing system of money printing wastewater is disclosed, as shown in fig. 1 and fig. 2, an upper computer performs monitoring and remote operation, and queries of historical alarm and data storage are realized, wherein the data storage includes but is not limited to data executed in the processing system; the device has the function of storing historical alarm values, and is convenient for maintenance and overhaul of the device at the later stage;
the upper computer sends an instruction to control the pretreatment control unit to perform acid pH blending, flocculating agent flocculation mixing, slurry conditioning and injecting into the transition tank for standby, and when the instantaneous liquid level value in the current tank exceeds a set H stop feeding value, the instantaneous liquid level value can automatically close a related valve or pump; the pretreatment control unit has three control modes of operation, shutdown and remote control;
the centrifugal machine control unit is responsible for the operation and monitoring of the hydraulic station 3, the dehydrator 4, the conveyer 5 and the cleaning water valve 40;
the automatic pretreatment process comprises the following steps:
starting a slurry pump 19, injecting the slurry into a reaction tank 25 through a slurry flowmeter 20, adding stock solution from a wastewater concentrated solution tank 41 → adding a liquid level meter 22 into the reaction tank to reach a set high level, closing the slurry pump 19 → starting a first sulfuric acid addition centrifugal pump 15, performing acid addition pH blending, and intermittently adding acid, automatically closing the first sulfuric acid addition centrifugal pump 15 when a measured value of a pH meter 23 of the reaction tank shows that the measured value is 9, stopping adding acid, completing pH accurate blending → opening a second flocculant addition centrifugal pump 17, automatically calculating and accurately adding a proper amount of flocculant according to a raw material ratio, after the addition of the flocculant is completed, closing the second flocculant addition centrifugal pump 17 → starting a reaction tank stirrer 25 → stirring for 30-60 seconds → starting a reaction tank conveying screw pump 24, and injecting the flocculant into a transition tank 27 for standby; when the liquid level of the reaction tank 14 reaches a set low level, the next round of pretreatment process is automatically completed; the automatic start sequence of the centrifugal machine control unit: the hydraulic pressure starting station 3 → the water boiling and dehydrating machine 4 → the conveyor 5 → the feed screw pump 30 is started, and the dehydrating machine 4 performs the separation process.
Automatic shutdown sequence cleaning of the cleaning water valve 40: closing the feed screw pump 30 → decelerating the dehydrator 4 to the cleaning speed → opening the cleaning water valve 40 for 5-10 minutes → closing the cleaning water valve 40 → closing the conveyor 5 → closing the dehydrator 4 → restarting the dehydrator 4 to the cleaning speed → opening the cleaning water valve 40 for 5-10 minutes → closing the cleaning water valve 40 → closing the dehydrator 4 → closing the hydraulic station 3.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the pretreatment control unit and the centrifuge control unit in the separation process are combined together, the automatic centrifuge differential control process has the advantages of automation degree, convenience in operation, automatic PH accurate blending process, automatic flocculating agent accurate adding process, maximized reduction of manual intervention, continuous and closed operation conditions of the centrifuge, great improvement on the operation environment of a factory, and great reduction of operation cost by combining the accurate adding process.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (10)
1. A processing apparatus of paper money printing waste water, characterized by that, it includes: an acid tank storage tank, a flocculating agent storage tank, a reaction tank and a transition tank,
a chemical outlet of the flocculant storage tank is connected with a flocculant feeding end of the reaction tank through a second flocculant adding centrifugal pump; the feeding end of the flocculant storage tank is connected with a first flocculant adding centrifugal pump, and the decolorizing agent enters the flocculant storage tank through the first flocculant adding centrifugal pump; a flocculating agent storage tank stirrer is arranged on the flocculating agent storage tank, and a stirring blade of the flocculating agent storage tank stirrer is positioned in the flocculating agent storage tank;
a medicine outlet of the acid tank storage tank is connected with a sulfuric acid feeding end of the reaction tank through a first sulfuric acid adding centrifugal pump; the medicine inlet end of the acid tank storage tank is connected with a second sulfuric acid adding centrifugal pump, and sulfuric acid enters the acid tank storage tank through the second sulfuric acid adding centrifugal pump;
the liquid inlet end of the reaction tank is connected with the outlet end of the wastewater concentrated liquid pool through a slurry pump; a reaction tank stirrer is arranged on the reaction tank, and a stirring blade of the reaction tank stirrer is positioned in the reaction tank;
the liquid inlet end of the transition tank is connected with the drain outlet of the reaction tank through a conveying screw pump of the reaction tank, a transition tank stirrer is arranged on the transition tank, and a stirring blade of the transition tank stirrer is positioned in the transition tank;
the sewage outlet of the transition tank is communicated with the feed inlet of the dehydrator through a feeding screw pump;
the main motor of the dehydrator is connected with the hydraulic station, and the hydraulic station provides hydraulic power for the main motor of the dehydrator; a clear liquid outlet of the dehydrator is connected with the clear liquid tank, and a solid slag outlet of the dehydrator is connected with the conveyor and used for conveying dehydrated solid slag; and the outlet of the clear liquid tank is conveyed to the next step for treatment by a submersible pump.
2. The money printing wastewater treatment device according to claim 1, wherein a flocculant flow meter is arranged between the second flocculant adding centrifugal pump and the reaction tank; and a flocculating agent storage tank liquid level meter is arranged on the flocculating agent storage tank and used for displaying the liquid level of the flocculating agent storage tank.
3. The apparatus for treating banknote printing wastewater according to claim 1, wherein a sulfuric acid flow meter is provided between the first sulfuric acid-adding centrifugal pump and the reaction tank; and the acid tank storage tank is provided with an acid tank storage tank liquid level meter for displaying the liquid level of the acid tank storage tank.
4. The apparatus for treating banknote printing wastewater according to claim 1, wherein a slurry flow meter is provided between the slurry pump and the reaction tank; the reaction tank is connected with a reaction tank vent pipe, and a reaction tank circulating pump is arranged between the reaction tank vent pipe and the reaction tank and is used for circulating a medium in the reaction tank vent pipe into the reaction tank; the reaction tank is provided with a tap water inlet end of the reaction tank, and the tap water inlet end is communicated with a tap water pipe; the reaction tank is provided with a reaction tank overflow port for overflow, and the reaction tank is provided with a reaction tank liquid level meter and a reaction tank PH meter for detecting the liquid level and the PH value in the reaction tank.
5. The apparatus for treating banknote printing wastewater according to claim 1, wherein an electric valve for the outlet of the reaction tank is arranged between the sewage outlet of the reaction tank and the screw pump for conveying the reaction tank; the transition tank is provided with a tap water inlet end of the transition tank, and the transition tank is communicated with a tap water pipe; the transition tank is provided with a transition tank overflow port for overflow; and the transition tank liquid level meter is arranged on the transition tank and used for detecting the liquid level in the transition tank.
6. The apparatus for treating banknote printing wastewater according to claim 1, wherein the transition tank is connected with a transition tank vent pipe, and a transition tank circulating pump is arranged between the transition tank vent pipe and the transition tank and used for returning the medium in the transition tank vent pipe to the transition tank.
7. The apparatus for treating banknote printing wastewater according to claim 1, wherein a clear liquid tank level meter is disposed on the clear liquid tank for displaying the liquid level of the clear liquid tank; a centrifugal machine flowmeter is arranged between the feeding screw pump and the dehydrator; and the sewage outlet of the transition tank is connected with an electric valve at the outlet of the transition tank.
8. The apparatus for treating banknote printing wastewater according to claim 1, wherein the acid tank storage tank, the flocculating agent storage tank, the reaction tank, the transition tank, the clear liquid tank and the dewatering machine are respectively provided with a water inlet end for clear water to enter so as to clean the clear water.
9. The treatment system of the banknote printing wastewater according to any one of claims 1 to 8, comprising an upper computer, a pretreatment control unit, a centrifuge control unit and a treatment device of the banknote printing wastewater, wherein the upper computer is connected with the pretreatment control unit and the centrifuge control unit through an Ethernet, the hydraulic station, the dehydrator, the conveyor and the cleaning water valve are respectively connected with the centrifuge control unit, and the tank storage tank, the flocculant storage tank, the reaction tank, the transition tank and the clear liquid tank are respectively connected with the pretreatment control unit.
10. The control method of the banknote printing wastewater treatment system according to claim 9, wherein the upper computer performs monitoring and remote operation to realize data storage of historical alarm;
the upper computer sends an instruction to control the pretreatment control unit to perform acid addition, pH regulation, flocculating agent flocculation and mixing, slurry regulation and injection into the transition tank for standby, and when the instantaneous liquid level value in the current tank exceeds a set H (stopping feeding) value, the instantaneous liquid level value can automatically close a related valve or pump; the pretreatment control unit has three control modes of operation, shutdown and remote control;
the centrifugal machine control unit is responsible for the operation and monitoring of the hydraulic station, the dehydrator, the conveyer and the cleaning water valve;
the automatic pretreatment process comprises the following steps:
starting a slurry pump, injecting the slurry into a reaction tank through a slurry flowmeter, adding stock solution from a wastewater concentrated solution pool → when a liquid level meter of the reaction tank reaches a set high level, closing the slurry pump → starting a first sulfuric acid addition centrifugal pump, performing acidification PH blending, and intermittently adding acid, automatically closing the first sulfuric acid addition centrifugal pump when the measurement value of the PH meter of the reaction tank is 9, stopping adding acid, completing PH precise blending → starting a second flocculant addition centrifugal pump, automatically adding a flocculant according to the raw material ratio, closing the second flocculant addition centrifugal pump → starting a reaction tank stirrer → stirring for 30-60 seconds → starting a reaction tank conveying screw pump, and injecting the flocculant into a transition tank for standby; when the liquid level of the reaction tank reaches a set low level, automatically completing the next round of pretreatment process;
automatic start-up sequence of the centrifuge control unit: starting a hydraulic station → starting a dewatering machine → starting a conveyor → starting a feeding screw pump, and carrying out a separation process by the dewatering machine;
automatic shutdown sequence of rinse water valve (rinse): closing the feed screw pump → slowing down the speed of the dehydrator to the cleaning speed → opening the cleaning water valve for 5-10 minutes → closing the cleaning water valve → closing the conveyor → closing the dehydrator → restarting the dehydrator to the cleaning speed → opening the cleaning water valve for 5-10 minutes → closing the cleaning water valve → closing the dehydrator → closing the hydraulic station.
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