CN113716769A - Equipment for treating unsymmetrical dimethylhydrazine-containing wastewater - Google Patents
Equipment for treating unsymmetrical dimethylhydrazine-containing wastewater Download PDFInfo
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- CN113716769A CN113716769A CN202111079681.1A CN202111079681A CN113716769A CN 113716769 A CN113716769 A CN 113716769A CN 202111079681 A CN202111079681 A CN 202111079681A CN 113716769 A CN113716769 A CN 113716769A
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
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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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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2101/34—Organic compounds containing oxygen
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- 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
- C02F2101/38—Organic compounds containing nitrogen
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- 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
- C02F2201/008—Mobile apparatus and plants, e.g. mounted on a vehicle
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- 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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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
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Abstract
The application relates to equipment for treating waste water containing unsymmetrical dimethylhydrazine, which comprises a waste water conveying mechanism, a flow detection mechanism, a concentration detection mechanism, a catalyst sampling mechanism, a degradation reaction mechanism and a control mechanism. The degradation reaction mechanism is respectively communicated with the wastewater conveying mechanism and the catalyst sample injection mechanism through pipelines, and is used for degrading unsymmetrical dimethylhydrazine in the wastewater; the control mechanism is respectively and electrically connected with and controls the wastewater conveying mechanism and the catalyst sample injection mechanism and is used for adjusting the flow rate of the wastewater and the sample injection amount of the catalyst according to the concentration of the unsymmetrical dimethylhydrazine in the wastewater. When the concentration of unsymmetrical dimethylhydrazine in the waste water is larger, the flow rate of the waste water can be properly reduced and the sample amount of the catalyst can be increased, otherwise, the flow rate of the waste water can be properly increased and the sample amount of the catalyst can be reduced. Therefore, the unsymmetrical dimethylhydrazine treated in a single unit time in the degradation reaction mechanism is relatively stable, and the fluctuation of each discharge index of the treated wastewater is relatively small.
Description
Technical Field
The invention relates to the field of wastewater treatment, in particular to equipment for treating unsymmetrical dimethylhydrazine-containing wastewater.
Background
The propellant is the energy of a rocket engine and is the material basis for developing the aerospace industry. Propellants can be divided into two types, liquid and solid, depending on their state. The propellant applied in China at present is mainly a binary liquid propellant, and the propellant removes liquid H2Liquid O2The toxicity of different degrees exists outside, if the treatment is not proper, the protection and treatment measures are not sufficient, and the propellant is manufactured, stored, transported and re-injected; in the processes of test run of a rocket engine, launching of a rocket and the like, the rocket propellant, decomposition products, combination products and waste gas and waste water generated by combustion products of the rocket propellant can cause serious influence on operators and the environment. Therefore, the waste gas and waste water of satellite launching center and space engine test field must be treated according to the relevant regulations of environmental protection to prevent pollution.
However, when the existing wastewater treatment device is used for treating wastewater of different batches, various discharge indexes of the treated wastewater have certain differences.
Disclosure of Invention
The embodiment of the application provides an equipment for handling waste water that contains uns-dimethylhydrazine, reduces current effluent treatment plant when handling different batches of waste water, the difference that each item emission index of waste water after handling exists.
In a first aspect, an embodiment of the present application provides an apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater, comprising:
the waste water conveying mechanism is used for conveying waste water;
the flow detection mechanism is used for detecting the flow of the wastewater conveyed by the wastewater conveying mechanism;
the concentration detection mechanism is used for detecting the concentration of unsymmetrical dimethylhydrazine in the wastewater;
the catalyst sample injection mechanism is used for conveying a catalyst;
the control mechanism is respectively and electrically connected with and controls the wastewater conveying mechanism and the catalyst sample injection mechanism and is used for adjusting the flow rate of the wastewater and the sample injection amount of the catalyst according to the concentration of the unsymmetrical dimethylhydrazine in the wastewater;
and the degradation reaction mechanism is communicated with the wastewater conveying mechanism and the catalyst sampling mechanism respectively through pipelines and is used for degrading unsymmetrical dimethylhydrazine in wastewater.
According to some embodiments, in the flowing direction of the wastewater, a sampling detection port is arranged on a pipeline in front of and/or behind the wastewater conveying mechanism.
The device is arranged near the wastewater conveying mechanism for sampling, and can truly reflect the concentration of unsymmetrical dimethylhydrazine in wastewater
According to some embodiments, the wastewater delivery mechanism comprises a first delivery pump, and the control mechanism is connected with and controls the first delivery pump;
the catalyst sampling mechanism comprises a second delivery pump, and the control mechanism is connected with and controls the second delivery pump.
According to some embodiments, the pipeline between the degradation reaction mechanism and the wastewater conveying mechanism is further provided with a temperature control mechanism, and the temperature control mechanism comprises a water temperature sensor for monitoring the temperature of the wastewater and a temperature adjusting mechanism for controlling the temperature of the wastewater according to the water temperature.
According to some embodiments, the degradation reaction mechanism comprises an aeration mechanism, a reaction assembly and an exhaust mechanism, the reaction assembly comprises a housing, and a solution cavity and a plurality of reaction units which are arranged in the housing, the solution cavity is communicated with the wastewater conveying mechanism and the catalyst sampling mechanism and is used for containing and mixing the wastewater and the catalyst, and the plurality of reaction units are connected in parallel, in series or in series-parallel;
the reaction unit comprises unit shells, spiral reaction tubes and ultraviolet lamps, the spiral reaction tubes and the ultraviolet lamps are arranged in the unit shells, the ultraviolet lamps are arranged in spaces surrounded by the spiral reaction tubes, the spiral reaction tubes of the unit shells are communicated with the solution cavity or with spiral reaction tubes of other unit shells, the unit shells are provided with exhaust holes, the air outlet end of the aeration mechanism is communicated with the unit shells and extends to the position near the spiral reaction tubes, one end of the exhaust mechanism is communicated with the unit shells, and the other end of the exhaust mechanism is communicated with the outside.
According to some embodiments, a quartz tube is disposed in a space surrounded by the spiral reaction tube, and the ultraviolet lamp is disposed in the quartz tube.
According to some embodiments, the ultraviolet lamp is a microwave electrodeless ultraviolet lamp.
According to some embodiments, the apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater further comprises a wastewater pretreatment apparatus for at least one of filtering, dedusting and settling the wastewater, the wastewater pretreatment apparatus being disposed in front of the wastewater transport mechanism in a flow direction of the wastewater.
According to some embodiments, the apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater further comprises a first adsorption mechanism, a pH adjustment mechanism and a second adsorption mechanism which are sequentially arranged and communicated after the degradation reaction mechanism in the flowing direction of the wastewater.
According to some embodiments, the apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater further comprises a movable transfer platform, wherein the wastewater conveying mechanism, the concentration detection mechanism, the catalyst sampling mechanism, the degradation reaction mechanism and the control mechanism are all arranged on the transfer platform.
According to the equipment for treating the unsymmetrical dimethylhydrazine-containing wastewater disclosed by the embodiment of the invention, through a large amount of researches, the applicant finds that the wastewater is generally diluted and then treated, the concentration of the diluted wastewater is not constant, so that the concentration difference of the unsymmetrical dimethylhydrazine in the wastewater of different batches is large, and the conventional wastewater treatment device cannot be properly treated. According to the equipment for treating the unsymmetrical dimethylhydrazine-containing wastewater, disclosed by the embodiment of the invention, the concentration detection mechanism is arranged for detecting the concentration of unsymmetrical dimethylhydrazine in the wastewater, and the control mechanism is used for adjusting the flow rate of the wastewater and the sample injection amount of the catalyst according to the concentration of the unsymmetrical dimethylhydrazine in the wastewater. When the concentration of unsymmetrical dimethylhydrazine in the waste water is larger, the flow rate of the waste water can be properly reduced and the sample amount of the catalyst can be increased, otherwise, the flow rate of the waste water can be properly increased and the sample amount of the catalyst can be reduced. Therefore, the unsymmetrical dimethylhydrazine amount processed in the degradation reaction mechanism per unit time is stable, and the sample injection amount of the catalyst can meet the requirement of the unsymmetrical dimethylhydrazine amount processed in the degradation reaction mechanism per unit time. Therefore, the equipment for treating the unsymmetrical dimethylhydrazine-containing wastewater can be used for treating wastewater of different batches, and can ensure that the unsymmetrical dimethylhydrazine in the wastewater is effectively treated, thereby ensuring that the fluctuation of various discharge indexes of the treated wastewater is small.
Drawings
Features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of an apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a series structure of reaction units of an apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater disclosed in an embodiment of the present application;
FIG. 3 is a schematic diagram of a parallel structure of reaction units of an apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater according to an embodiment of the present application.
In the drawings, the drawings are not necessarily drawn to scale.
100. A wastewater conveying mechanism; 200. a concentration detection mechanism; 300. a catalyst sample introduction mechanism; 400. a degradation reaction mechanism; 500. a control mechanism; 600. a flow rate detection mechanism; 510. a temperature adjustment mechanism; 700. a first adsorption mechanism; 800. a pH adjusting mechanism; 900. a second adsorption mechanism; 210. a sampling detection port; 410. an aeration mechanism; 411. an air outlet end; 412. an air inlet end; 413. an air pump; 420. a reaction assembly; 421. a housing; 430. a reaction unit; 431. a unit case; 432. a spiral reaction tube; 433. an ultraviolet lamp; 434. a quartz tube; 440. a solution chamber; 450. an exhaust mechanism; 451. and (7) an exhaust port.
Detailed Description
Embodiments of the present application will be described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the application and are not intended to limit the scope of the application, i.e., the application is not limited to the described embodiments.
In the description of the present application, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicate an orientation or positional relationship that is merely for convenience in describing the application and to simplify the description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. "vertical" is not strictly vertical, but is within the tolerance of the error. "parallel" is not strictly parallel but within the tolerance of the error.
In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood as appropriate by one of ordinary skill in the art.
The applicant has made a targeted study after paying attention to the fact that when the conventional wastewater treatment device treats wastewater of different batches, each discharge index of the treated wastewater has a certain difference, and further finds that the concentration of the wastewater of different batches has a large difference. According to GJB3485A-2011 'requirements on wastewater treatment and discharge of hydrazine fuels and nitroxide oxidants', the unsymmetrical dimethylhydrazine wastewater at the rocket launching site is generally diluted and then treated, and the dilution concentration of the wastewater of each batch is indefinite. The concentration of unsymmetrical dimethylhydrazine in the wastewater is distributed between 20 and 250 mg/L. The treatment capacity of the existing wastewater treatment device in unit time is relatively fixed, and when wastewater with different dilution concentrations is treated, the problem that the treated wastewater discharge indexes are different exists. When the wastewater with low unsymmetrical dimethylhydrazine concentration is treated, the unsymmetrical dimethylhydrazine is treated more thoroughly, the discharge index after treatment is low, and the treatment capability of the wastewater treatment device is not fully exerted. When the wastewater with high unsymmetrical dimethylhydrazine concentration is treated, the unsymmetrical dimethylhydrazine is not completely treated, so that the unsymmetrical dimethylhydrazine remains in the wastewater, and the treated discharge index is relatively high.
Based on this, the applicant has designed an apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater.
For a better understanding of the present application, embodiments of the present application are described below with reference to fig. 1 to 3.
An embodiment of the present application provides an apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater, please refer to fig. 1, which includes a wastewater conveying mechanism 100, a flow rate detecting mechanism 600, a concentration detecting mechanism 200, a catalyst sampling mechanism 300, a degradation reaction mechanism 400, and a control mechanism 500. The wastewater conveying mechanism 100 is used for conveying wastewater; the flow detection mechanism 600 is used for detecting the flow of the wastewater conveyed by the wastewater conveying mechanism 100; the concentration detection mechanism 200 is used for detecting the concentration of unsymmetrical dimethylhydrazine in the wastewater; the catalyst sample injection mechanism 300 is used for conveying a catalyst; the degradation reaction mechanism 400 is respectively communicated with the wastewater conveying mechanism 100 and the catalyst sampling mechanism 300 through pipelines, and the degradation reaction mechanism 400 is used for degrading unsymmetrical dimethylhydrazine in wastewater; the control mechanism 500 is respectively electrically connected with and controls the wastewater conveying mechanism 100 and the catalyst sample injection mechanism 300, and is used for adjusting the flow rate of the wastewater and the sample injection amount of the catalyst according to the concentration of the unsymmetrical dimethylhydrazine in the wastewater.
According to the equipment for treating the unsymmetrical dimethylhydrazine-containing wastewater disclosed by the embodiment of the invention, through a large amount of researches, the applicant finds that the wastewater is generally diluted and then treated, the concentration of the diluted wastewater is not constant, so that the concentration difference of the unsymmetrical dimethylhydrazine in the wastewater of different batches is large, and the conventional wastewater treatment device cannot be properly treated. According to the equipment for treating the unsymmetrical dimethylhydrazine-containing wastewater, provided by the embodiment of the invention, the concentration detection mechanism 200 is arranged for detecting the concentration of the unsymmetrical dimethylhydrazine in the wastewater, and the control mechanism 500 is used for adjusting the flow rate of the wastewater and the sample injection amount of the catalyst according to the concentration of the unsymmetrical dimethylhydrazine in the wastewater. When the concentration of unsymmetrical dimethylhydrazine in the waste water is larger, the flow rate of the waste water can be properly reduced and the sample amount of the catalyst can be increased, otherwise, the flow rate of the waste water can be properly increased and the sample amount of the catalyst can be reduced. Therefore, the unsymmetrical dimethylhydrazine amount processed in the degradation reaction mechanism 400 per unit time is stable, and the sample injection amount of the catalyst can meet the requirement of the unsymmetrical dimethylhydrazine amount processed in the degradation reaction mechanism 400 per unit time. Therefore, the equipment for treating the unsymmetrical dimethylhydrazine-containing wastewater can be used for treating wastewater of different batches, and can ensure that the unsymmetrical dimethylhydrazine in the wastewater is effectively treated, thereby ensuring that the fluctuation of various discharge indexes of the treated wastewater is small.
The unsymmetrical dimethylhydrazine-containing wastewater is typically stored in a wastewater reservoir, and the wastewater delivery mechanism 100 is in communication with the wastewater reservoir, such as being disposed in the wastewater reservoir, or in communication with the wastewater reservoir via a conduit.
For convenience of description, the front or rear description of the present application is defined by the flowing direction of the wastewater, for example, the mechanism through which the wastewater flows first is located in front of the mechanism through which the wastewater flows later. The concentration detection mechanism 200 may be disposed in front of or behind the wastewater transport mechanism 100, and detects the concentration of unsymmetrical dimethylhydrazine in the wastewater. The flow rate detection mechanism 600 detects the concentration of unsymmetrical dimethylhydrazine in the wastewater, and may be disposed on the wastewater transport mechanism 100, or disposed in a pipe near the wastewater transport mechanism 100, such as in front of and behind the wastewater transport mechanism 100.
And the catalyst sample feeding mechanism 300 is used for conveying the catalyst required by the degradation of unsymmetrical dimethylhydrazine. The dosage of the catalyst is positively correlated with the amount of the unsymmetrical dimethylhydrazine for degradation.
The control mechanism 500 may be provided with a plurality of control terminals, one of which is electrically connected to the wastewater delivery mechanism 100 and controls the wastewater delivery mechanism 100. The other control terminal is electrically connected to the concentration detection mechanism 200 and controls the concentration detection mechanism 200.
After knowing the concentration of unsymmetrical dimethylhydrazine in the wastewater, the control mechanism 500 can control the wastewater conveying mechanism 100 to adjust the flow rate of the wastewater, so as to make the total amount of unsymmetrical dimethylhydrazine entering the degradation reaction mechanism 400 in a unit time within a relatively stable fixed value range, for example, make the total amount of unsymmetrical dimethylhydrazine reach or approach the maximum treatment capacity of the degradation reaction mechanism 400, so as to improve the treatment efficiency. When the concentration of unsymmetrical dimethylhydrazine in the waste water is higher, the flow rate of the waste water can be properly reduced, otherwise, the flow rate of the waste water can be properly increased. Accordingly, after the concentration of unsymmetrical dimethylhydrazine in the wastewater is known, the control mechanism 500 can control the catalyst sampling mechanism 300 to adjust the sampling amount of the catalyst. The purpose is to match the amount of catalyst that enters the degradation reaction mechanism 400 per unit time to the total amount of unsymmetrical dimethylhydrazine that enters it.
It will be appreciated that the control mechanism 500 may be programmed with several operating modes in which the flow rate of the wastewater and the amount of catalyst to be sampled are set. According to the different concentration in the unsymmetrical dimethylhydrazine in the waste water, the corresponding operation mode is selected, thereby realizing automatic control and adjustment.
If the concentration of unsymmetrical dimethylhydrazine is detected to be more than 100mg/L, the control mechanism 500 adopts the operation mode 1, and the flow rate of the waste water is 1m3The catalyst was sampled in an amount of 2.5 g/L.
When the concentration of the unsymmetrical dimethylhydrazine is detected to be 50-100 mg/L, the control mechanism 500 adopts the operation mode 2 to control the flow of the wastewater to be 1.5m3The catalyst was sampled at 1.5 g/L.
When the concentration of the unsymmetrical dimethylhydrazine is detected to be lower than 50mg/L, the control mechanism 500 adopts the operation mode 3 to control the flow of the wastewater to be 2m3The catalyst was sampled in an amount of 1 g/L.
The degradation reaction mechanism 400 is a product of the degradation unsymmetrical dimethylhydrazine reaction. The degradation reaction mechanism 400 is respectively communicated with the wastewater conveying mechanism 100 and the concentration detection mechanism 200 through pipelines to receive wastewater and corresponding catalysts. Under the action of the control mechanism 500, the total amount of the catalyst entering the degradation reaction mechanism 400 per unit time is relatively fixed regardless of the concentration of the unsymmetrical dimethylhydrazine in the wastewater, and the sample amount of the catalyst is adapted to the total amount of the catalyst entering the degradation reaction mechanism 400 per unit time. Therefore, the degradation reaction mechanism 400 can meet the requirement of the total amount of unsymmetrical dimethylhydrazine processed by the degradation reaction mechanism 400 in unit time. Therefore, the equipment for treating the unsymmetrical dimethylhydrazine-containing wastewater can be used for treating wastewater of different batches, and can ensure that the unsymmetrical dimethylhydrazine in the wastewater is effectively treated, thereby ensuring that the fluctuation of various discharge indexes of the treated wastewater is small.
In addition, the flow rate detection mechanism 600 and the concentration detection mechanism 200 may be respectively electrically connected to the control mechanism 500, and transmit the detected flow rate and concentration data to the control mechanism 500 in real time, but of course, the flow rate detection mechanism 600 and the concentration detection mechanism 200 may not be electrically connected to the control mechanism 500, only display the detected flow rate and concentration data, and input the flow rate and concentration data into the control mechanism 500 by manual input or other means.
In some embodiments, referring to fig. 1, in the flowing direction of the wastewater, a sampling detection port 210 is disposed in a pipeline in front of and/or behind the wastewater conveying mechanism 100.
The pipeline in front of the wastewater conveying mechanism 100 and/or the pipeline behind the wastewater conveying mechanism 100 are/is provided with a sampling detection port 210, so that a sample can be sampled near the wastewater conveying mechanism 100, and then the sample is used for detecting the concentration in the concentration detection mechanism 200, so that the concentration in the unsymmetrical dimethylhydrazine in the wastewater can be reflected more truly. After the test is completed, the sample is returned to the channel through the sample test port 210.
In some embodiments, referring to fig. 1, the wastewater delivery mechanism 100 includes a first delivery pump, and the control mechanism 500 is connected to and controls the first delivery pump; the catalyst sampling mechanism 300 comprises a second delivery pump, and the control mechanism 500 is connected with and controls the second delivery pump.
The first delivery pump can be different types of liquid pumps, such as a vane pump, a centrifugal pump, a mixed flow pump or an axial flow pump submersible pump, and a displacement pump, a reciprocating pump, a rotor pump, a gear pump or a screw pump. In order to enhance the filtering effect, the water outlet end of the first delivery pump can be provided with a filter screen for filtering impurities with larger particles. The second delivery pump has relatively accurate requirement on the sample amount of the catalyst and can be a liquid pump with a dosage function. The control mechanism 500 adjusts the flow rate of the wastewater and the sample injection amount of the catalyst through the first delivery pump and the second delivery pump respectively, and the adjustment speed is high and the adjustment is convenient.
In some embodiments, referring to fig. 1, a temperature control mechanism 500 is further disposed in a pipeline between the degradation reaction mechanism 400 and the wastewater delivery mechanism 100, and the temperature control mechanism 500 includes a water temperature sensor for monitoring a temperature of the wastewater and a temperature adjusting mechanism 510 for controlling a temperature of the wastewater according to the temperature of the water.
The applicant has also found that because mobile satellite launch site rockets are typically located in remote fields, in such environments the diurnal temperature differences are large. So that the temperature of the wastewater in the wastewater storage tank also varies greatly. The water temperature of the wastewater can affect the efficiency of the degradation reaction. Thus, the temperature control mechanism 500 is provided. The temperature control mechanism 500 includes a water temperature sensor and a temperature adjustment mechanism 510. A water temperature sensor monitors the wastewater water temperature. When the temperature of the wastewater is too high or too low, the temperature adjustment mechanism 510 adjusts the temperature of the wastewater. The temperature adjustment mechanism 510 may be provided with heating and cooling components. The heating and cooling module heats or cools the wastewater to adjust the temperature of the wastewater, so that the degradation reaction in the degradation reaction mechanism 400 operates with high reaction efficiency.
In some embodiments, referring to fig. 1, the degradation reaction mechanism 400 includes an aeration mechanism 410, a reaction assembly 420 and an exhaust mechanism 450, the reaction assembly 420 includes a housing 421, and a solution chamber 440 and a plurality of reaction units 430 which are disposed in the housing 421, the solution chamber 440 is communicated with the wastewater conveying mechanism 100 and the catalyst injection mechanism 300 for accommodating and mixing the wastewater and the catalyst, and the plurality of reaction units 430 are connected in parallel, in series or in series-parallel. The reaction unit 430 comprises a unit shell 431, a spiral reaction pipe 432 and an ultraviolet lamp 433, wherein the spiral reaction pipe 432 and the ultraviolet lamp 433 are arranged in the unit shell 431, the ultraviolet lamp 433 is arranged in a space surrounded by the spiral reaction pipe 432, the spiral reaction pipe 432 of each unit shell 431 is communicated with the solution cavity 440 or is communicated with the spiral reaction pipe 432 of other unit shells 431, the air outlet end 411 of the aeration mechanism 410 is communicated with the unit shell 431 and extends to the vicinity of the spiral reaction pipe 432, one end of the exhaust mechanism 450 is communicated with the unit shell 431, and the other end of the exhaust mechanism is communicated with the outside.
The degradation reaction mechanism 400 may be a microwave ultraviolet degradation device. The solution chamber 440 receives and mixes the wastewater and the catalyst to obtain a mixed solution, and the mixed solution is carried into the reaction unit 430. The number of the reaction units 430 is plural, for example, 9 or more. The reaction units 430 of the plurality of reaction units 430 are connected in parallel, series, or series-parallel. The parallel connection, i.e., the plurality of reaction units 430, includes both the reaction units 430 connected in parallel and the reaction units 430 connected in series. Referring to fig. 2 and 3, the spiral reaction tubes 432 of the parallel reaction units 430 may be directly communicated with the solution chamber 440 or the spiral reaction tube 432 of the previous reaction unit 430, and the spiral reaction tubes 432 of the series reaction units 430 are communicated with the spiral reaction tube 432 of the previous reaction unit 430. The air outlet 411 of the aeration mechanism 410 is communicated with the unit housing 431 and extends to the vicinity of the spiral reaction tube 432 to provide air required for the degradation reaction. The air inlet 412 of the aeration mechanism 410 may be provided with an air pump 413. Air enters the reaction unit 430 from the air outlet 411 under the action of the air pump 413, and micropore aeration and microwave irradiation photocatalytic reaction are performed in the reaction unit 430. The reaction channel is a spiral reaction tube 432 disposed in the extending direction of the unit housing 431. The spiral reaction tube 432 can increase the retention time of the mixed solution in the reaction unit 430 and increase the contact area of the mixed solution and the gas, thereby achieving a better reaction effect. The exhaust mechanism 450 has one end communicating with the unit case 431 and the other end communicating with the outside through the exhaust port 451, and discharges the gas after the reaction from the degradation reaction mechanism 400.
It is understood that the degradation reaction mechanism 400 may also be preset with different operation modes. For different operation modes, the aeration amount of the aeration mechanism 410 and the power of the ultraviolet lamp 433 are different. And manually selecting a corresponding operation mode according to the detected concentration of the waste liquid. Of course, the degradation reaction unit 400 may be connected to the control unit 500, and the control unit 500 may automatically select the reaction mode according to the detected concentration of the waste liquid.
In some of these embodiments, the catalyst is TiO2。TiO2The catalyst has the advantages of no photo-corrosion after illumination, good acid and alkali resistance, stable chemical property, low cost, high activity and the like, and does not cause secondary pollution to the environment after catalytic reaction.
In some embodiments, referring to fig. 2 and 3, a quartz tube 434 is disposed in a space surrounded by the spiral reaction tube 432, and the ultraviolet lamp 433 is disposed in the quartz tube 434.
In this way, the quartz tube 434 may provide a degree of protection to the ultraviolet lamp 433, thereby extending the life of the ultraviolet lamp 433.
In some embodiments, referring to fig. 2 and 3, the ultraviolet lamps 433 are microwave electrodeless ultraviolet lamps 433.
The spectrum energy concentration of the microwave electrodeless ultraviolet lamp 433 has higher photocatalytic activity, the manufacturing process is simple, the service life is longer, the reaction unit 430 can be simplified, the safety and reliability of the equipment are improved, the power density is high, the radiation efficiency is higher, and the spectrum and the light intensity are adjustable, so that the equipment can adjust the microwave electrodeless ultraviolet lamp 433 more flexibly according to the requirements.
In some embodiments, referring to fig. 1, the apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater further comprises a wastewater pretreatment apparatus for at least one of filtering, dedusting and settling the wastewater, wherein the wastewater pretreatment apparatus is disposed in front of the wastewater delivery mechanism 100 in a flowing direction of the wastewater.
Before the waste water is degraded, one or more processes of filtering, dedusting and sedimentation can be selected as required, most of particles in the waste water are removed, and then the waste water is conveyed to a corresponding mechanism through the waste water conveying mechanism 100, so that the influence of the solid impurities on blocking pipelines of other mechanisms is reduced, on the one hand, the waste water is relatively clarified, the light of the ultraviolet lamp 433 can well penetrate through the waste water, and the effect of the solid impurities on refraction or scattering of the light is reduced to weaken the reaction effect.
In some embodiments, referring to fig. 1, the apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater further comprises a first adsorption mechanism 700 behind the degradation reaction mechanism 400.
The first adsorption mechanism 700 is communicated with the degradation reaction mechanism 400, and mainly adsorbs refractory organic matters in part of the wastewater and catalysts introduced into the degradation reaction mechanism 400. The first adsorption mechanism 700 may mainly place activated carbon as an adsorbent, which has a strong adsorption capacity due to its special surface structure characteristics, and mainly adsorbs some oxidation impurities after the microwave ultraviolet catalytic reaction.
In some embodiments, referring to fig. 1, the apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater further comprises a pH adjusting mechanism 800 after the degradation reaction mechanism 400.
The pH adjusting mechanism 800 is communicated with the first adsorption mechanism 700 and is used for adjusting the pH value of the wastewater. The pH value of the discharged wastewater needs to reach the discharge standard. The pH adjusting mechanism 800 may include a first pH meter, a pH adjusting tank, and a second pH meter sequentially arranged in a wastewater flowing direction. The pH value of the wastewater is measured by a first pH detector, if the wastewater does not meet the discharge requirement, the wastewater enters a pH adjusting tank to adjust the pH value, and the wastewater discharged from the pH adjusting tank is subjected to pH value detection by a second pH detector.
In some embodiments, referring to fig. 1, the apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater further comprises a second adsorption mechanism 900 after the degradation reaction mechanism 400.
The second adsorption mechanism 900 can adsorb the reacted solid impurities, and finally returns to the wastewater tank through the wastewater outlet 10 to perform multiple cyclic degradation treatment until the detected concentration reaches the discharge standard.
In some embodiments, referring to fig. 1, the apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater comprises a first adsorption mechanism 700, a pH adjustment mechanism 800, and a second adsorption mechanism 900, which are sequentially disposed and communicated behind the degradation reaction mechanism 400.
The first adsorption mechanism 700, the pH adjustment mechanism 800 and the second adsorption mechanism 900 are sequentially arranged to improve the wastewater treatment effect.
In some embodiments, the apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater further comprises a movable transfer platform, wherein the wastewater conveying mechanism 100, the concentration detection mechanism 200, the catalyst sample injection mechanism 300, the degradation reaction mechanism 400 and the control mechanism 500 are disposed on the transfer platform.
The transfer platform can be a vehicle-mounted platform or other mobile devices, so that equipment for treating the waste water containing the unsymmetrical dimethylhydrazine can be moved to a required waste water treatment site, movable waste water treatment is realized, and the waste water treatment cost and the equipment cost are reduced.
In some of these embodiments, the apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater further comprises a power generation device. The power generation device supplies power for other mechanisms, so that the equipment for treating the unsymmetrical dimethylhydrazine-containing wastewater can be suitable for the treatment of degraded wastewater which is inconvenient to electrify in remote areas.
While the present application has been described with reference to preferred embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the present application, and in particular, features shown in the various embodiments may be combined in any manner as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.
Claims (10)
1. An apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater, comprising:
the waste water conveying mechanism is used for conveying waste water;
the flow detection mechanism is used for detecting the flow of the wastewater conveyed by the wastewater conveying mechanism;
the concentration detection mechanism is used for detecting the concentration of unsymmetrical dimethylhydrazine in the wastewater;
the catalyst sample injection mechanism is used for conveying a catalyst;
the control mechanism is respectively and electrically connected with and controls the wastewater conveying mechanism and the catalyst sample injection mechanism and is used for adjusting the flow rate of the wastewater and the sample injection amount of the catalyst according to the concentration of the unsymmetrical dimethylhydrazine in the wastewater;
and the degradation reaction mechanism is communicated with the wastewater conveying mechanism and the catalyst sampling mechanism respectively through pipelines and is used for degrading unsymmetrical dimethylhydrazine in wastewater.
2. The apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater as set forth in claim 1, wherein a sampling detection port is provided in a pipe passing through the front and/or a pipe passing through the rear of the wastewater transport mechanism in the direction of flow of the wastewater.
3. The apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater according to claim 1, wherein the wastewater delivery mechanism comprises a first delivery pump, and the control mechanism is connected with and controls the first delivery pump;
the catalyst sampling mechanism comprises a second delivery pump, and the control mechanism is connected with and controls the second delivery pump.
4. The apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater according to claim 1, wherein a pipeline between the degradation reaction means and the wastewater delivery means is further provided with a temperature control means, and the temperature control means comprises a water temperature sensor for monitoring the temperature of the wastewater and a temperature adjustment means for controlling the temperature of the wastewater according to the water temperature.
5. The apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater according to claim 1, wherein the degradation reaction means comprises an aeration means, a reaction assembly and an exhaust means, the reaction assembly comprises a housing, and a solution chamber and a plurality of reaction units arranged in the housing, the solution chamber is communicated with the wastewater delivery means and the catalyst injection means for containing and mixing the wastewater and the catalyst, and the plurality of reaction units are connected in parallel, in series or in series-parallel;
the reaction unit comprises unit shells, spiral reaction tubes and ultraviolet lamps, the spiral reaction tubes and the ultraviolet lamps are arranged in the unit shells, the ultraviolet lamps are arranged in spaces surrounded by the spiral reaction tubes, the spiral reaction tubes of the unit shells are communicated with the solution cavity or with spiral reaction tubes of other unit shells, the unit shells are provided with exhaust holes, the air outlet end of the aeration mechanism is communicated with the unit shells and extends to the position near the spiral reaction tubes, one end of the exhaust mechanism is communicated with the unit shells, and the other end of the exhaust mechanism is communicated with the outside.
6. The apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater according to claim 5, wherein a quartz tube is provided in a space surrounded by the spiral reaction tube, and the ultraviolet lamp is provided in the quartz tube.
7. The apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater according to claim 1, wherein the ultraviolet lamp is a microwave electrodeless ultraviolet lamp.
8. The apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater as set forth in claim 1, wherein said apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater further comprises a wastewater pretreatment apparatus for at least one of filtration, dust removal and sedimentation of wastewater, said wastewater pretreatment apparatus being disposed in front of said wastewater transport mechanism in a flow direction of said wastewater.
9. The apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater as set forth in claim 1, wherein said apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater further comprises a first adsorption means, a pH adjustment means, a second adsorption means disposed in this order after and in communication with said degradation reaction means in the direction of flow of said wastewater.
10. The apparatus for treating unsymmetrical dimethylhydrazine-containing wastewater according to any one of claims 1 to 9, further comprising a movable transfer platform, wherein the wastewater conveying mechanism, the concentration detection mechanism, the catalyst sampling mechanism, the degradation reaction mechanism and the control mechanism are disposed on the transfer platform.
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Application publication date: 20211130 |