CN213012114U - Sewage treatment system and adjustable power supply - Google Patents
Sewage treatment system and adjustable power supply Download PDFInfo
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- CN213012114U CN213012114U CN202021778528.9U CN202021778528U CN213012114U CN 213012114 U CN213012114 U CN 213012114U CN 202021778528 U CN202021778528 U CN 202021778528U CN 213012114 U CN213012114 U CN 213012114U
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Abstract
The utility model discloses a sewage treatment system, including sewage treatment pond, set up at least a pair of electrode and mixing system in sewage treatment pond, with the power of electrode connection, the power can carry out positive, negative polarity exchange according to preset's time parameter. The polarities of the cathode and the anode of the two electrodes are intermittently exchanged, so that on one hand, part of solid particles originally adhered to the surfaces of the electrodes can fall off or the metal reduced on the surfaces of the original cathodes can be dissolved into sewage again, and on the other hand, the solid particles adhered to the surfaces of the diamond electrodes can be partially dissolved by acid in the area near the surfaces of the anodes. Therefore, the method regenerates the electrode by exchanging the cathode and the anode, prolongs the service life of the electrode, and reduces the acid washing frequency so as to improve the sewage treatment efficiency and reduce the cost. In the whole sewage treatment process, the method of output current attenuation is adopted, and different current intensities are adopted for different pollution degrees, so that the whole system effectively saves electric energy, and the effects of energy conservation and environmental protection are achieved.
Description
Technical Field
The utility model belongs to sewage treatment control system and method field, concretely relates to sewage treatment system and adjustable power.
Background
With the progress of industrialization in China, more and more industrial wastewater is discharged into the environment. Advanced oxidation technology is one of the important methods for treating refractory organic wastewater. Various chemical reactions are carried out on the surface of the electrode through certain electric power to generate a strong oxidant such as hydroxyl free radicals, and macromolecular organic substances in the water body are destroyed and mineralized into pollution-free carbon dioxide and water.
However, the effect of advanced oxidation technology on treating high-salt and high-hardness waste organic wastewater containing metal ions is not good in reality. The main reason is because solid particles such as calcium carbonate, magnesium carbonate, calcium phosphate, iron metal and the like are precipitated in the treatment of the wastewater. The solid particles are separated out and adhered to the surface of the electrode, so that the scaling phenomenon is generated. Resulting in the electrodes not being in direct contact with the contaminated water and the organic water not being further treated. This phenomenon is particularly severe on the cathode surface that is connected to the negative pole of the power supply during oxidation. The current common approach to this approach is to soak and wash the failed electrode in acid to dissolve and remove the solids covering the electrode surface. However, the method needs frequent acid washing and consumes a large amount of acid, which causes low sewage treatment rate and high cost of advanced oxidation technology in practical application.
Disclosure of Invention
The utility model discloses the technical problem that will solve is: the utility model provides a sewage treatment system and adjustable power, has solved among the prior art organic sewage treatment process electrode pickling frequency height, inefficiency, short-lived problem of electrode.
The utility model discloses a solve above-mentioned technical problem and adopt following technical scheme:
the utility model provides a sewage treatment system, includes sewage treatment pond, sets up at least a pair of electrode and mixing system in sewage treatment pond, the power of being connected with the electrode, the power can carry out positive negative exchange according to the time parameter that sets for in advance.
After the positive pole and the negative pole of the power supply are exchanged, the stirring system stops delaying for a period of time and then starts to work.
The bottom surface of the sewage treatment tank is provided with an inclined surface structure which inclines towards the water outlet direction.
The power supply can convert the output current intensity, and a current intensity conversion constant is set according to the pollution degree parameter of the sewage.
The output current intensity is attenuated according to the rule of exponential decrease or linear decrease.
The electrode can be at least one of a conductive diamond coating electrode, a graphite electrode, a carbon fiber electrode, a graphene electrode and a ruthenium-titanium coating titanium electrode.
An adjustable power supply can be used for a sewage treatment system, the adjustable power supply adjusts the output current intensity according to the parameters of a load, the initial value and the change speed of the output current intensity are controlled by a controller according to the sampling value of a sensor, and the sensor is connected with the load; and after the output current intensity is adjusted, the power supply works in a constant current output state.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. aiming at the difficult pain point of organic sewage treatment, the invention patent proposes that the polarities of the cathode and the anode of two electrodes are intermittently exchanged by exchanging the anode and the cathode of a power supply in the sewage treatment process. When the cathode and the anode of the electrode are exchanged, on one hand, part of the solid particles originally adhered to the surface of the electrode can fall off or the metal reduced on the surface of the original cathode can be dissolved into the sewage again, and on the other hand, the solid particles adhered to the surface of the electrode can be partially dissolved by the acid in the area near the surface of the anode. Therefore, the method regenerates the electrode by exchanging the cathode and the anode, prolongs the service life of the electrode, and reduces the acid washing frequency, thereby improving the sewage treatment efficiency and reducing the cost.
2. The stirring system is stopped for a period of time after the electrode is exchanged, so that the scaling substances attached to the original cathode electrode are effectively dissolved and fully sink, and then the stirring system is started, thereby improving the sewage treatment efficiency.
3. In the whole sewage treatment process, the method of output current intensity attenuation is adopted, sewage with different pollution degrees adopts different initial current intensities, and the current intensities are gradually attenuated along with the reduction of the pollution degree in water, so that the whole system effectively saves electric energy, and the effects of energy conservation and environmental protection are achieved.
Drawings
FIG. 1 is a schematic diagram of the module connection of the sewage treatment system of the present invention.
FIG. 2 is a power supply circuit diagram of the sewage treatment system of the present invention.
Fig. 3 is a circuit diagram of a part of the output relay in fig. 2.
FIG. 4 is a waveform diagram of the current intensity linear attenuation operation of the sewage treatment method of the present invention.
FIG. 5 is a waveform diagram of the current intensity exponential decay operation of the sewage treatment method of the present invention.
Fig. 6 is a first flowchart of the adjustable power supply of the present invention.
Fig. 7 is a second flowchart of the present invention.
Fig. 8 is a third flowchart of the present invention.
Wherein, the labels in the figure are: 1-a first electrode; 2-a second electrode; 3-organic sewage; 4-fouling material coming off the electrodes.
Detailed Description
The structure and working process of the present invention will be further explained with reference to the accompanying drawings.
The utility model provides a sewage treatment system, includes sewage treatment pond, sets up at least a pair of electrode and mixing system in sewage treatment pond, the power of being connected with the electrode, the power can carry out positive negative exchange according to the time parameter that sets for in advance.
The power supply can change the polarity of the electrodes and the output current intensity, the initial value and the change speed of a current intensity change constant are set according to the pollution degree parameter of the sewage, and the power supply works in a constant current state after the output current intensity is changed in each working period.
The output current intensity is attenuated according to the rule of exponential decrease or linear decrease.
In one embodiment, as shown in FIGS. 1 to 3,
a sewage treatment system comprises a sewage treatment tank, a first electrode 1 and a second electrode 2 which are arranged in the sewage treatment tank, a stirring system and a power supply which is connected with the first electrode 1 and the second electrode 2, wherein organic sewage 3 is filled in the sewage treatment tank, the upper end of the electrode extends out of the upper surface of the organic sewage 3, and the power supply comprises a rectifying part, a filtering part, a voltage stabilizing part, an integrated controller, a time control system and an output relay; after passing through a transformer BK, alternating current passes through a rectifier bridge consisting of four diodes VT 1-VT 4, then passes through primary filtering, secondary filtering and voltage stabilization, and then passes through a time relay JT to reach an output end, wherein the output end is provided with an output relay J, and the polarity of the output end of a power supply is controlled through the output relay; the integrated controller is used for displaying and setting control state information, the time relay is used for adjusting polarity switching time, and the output relay is used for controlling polarity switching of a power supply.
The current attenuation constant can be realized through the adjustable resistor R2, the main function of the current attenuation constant is used for adjusting the output voltage, the adjustable range is 0-25 v, when the voltage changes, the power of the voltage does not change, the current is increased, and the intensity of the output current is expected to change in an exponential adjustable attenuation mode. Two important parameters are the initial current intensity and the speed of change, denoted by "K", which can be directly controlled and adjusted. The load is sampled by the module and plc implements the control function. .
The time control system may be controlled by: time relay or PLC and other controllers.
In this example, the time control system is implemented by a time relay.
Capacitors C1 and C2 are adopted in primary filtering and secondary filtering of the embodiment, a three-terminal voltage-stabilizing 78-series voltage stabilizer is adopted in a voltage stabilizing part, and the voltage of an output end can be adjusted within the range of DC 2-25V.
The integrated controller comprises a touch screen, seven-segment (or eight-segment) nixie tube display or a PLC programmable controller, and is used for integrally controlling two or more groups of time controllers.
Controllable time relay: the time of the constant current power supply is controlled, and the adjusting range of the time control system is second: 0.01-99.99 s, and is divided into: 1-99M 99S, hour: 1 to 99H 99M.
The output relay controls the polarity of the constant current power supply, the model is CDZ9-62PL, and the control end of the output time control system is respectively connected with an indicator light LED1, an LED2 and current-limiting resistors R11 and R12.
The power supply can exchange positive and negative polarities according to preset time parameters.
After the positive electrode and the negative electrode of the power supply are exchanged, the stirring system stops delaying for a period of time and then starts to work, so that the scale 4 falling off from the electrodes can effectively sink, and the sewage treatment efficiency is improved.
The electrodes are arranged in pairs, at least one pair is arranged, and the number of the electrodes is 2, 4, 6 and the like according to the specific size of the sewage treatment tank.
In order to further quickly discharge the precipitated scale substances out of the sewage treatment tank, the bottom surface of the sewage treatment tank is provided with an inclined surface structure inclined towards the water outlet direction.
The pollution degree can be calibrated for parameters such as sewage concentration, Chemical Oxygen Demand (COD) and the like, for example, when the COD is 1000mg/L, the current intensity output by the power supply is controlled to be 1A.
As the water purifying time is prolonged, when COD is reduced from 1000mg/L to 800mg/L, the current intensity output by the control power supply is attenuated to 0.8A, and when the COD is 200mg/L, the current intensity output by the control power supply is 0.2A.
In the above embodiment, the electrode is at least one of a conductive diamond coating electrode, a graphite electrode, a carbon fiber electrode, a graphene electrode, and a ruthenium-titanium coating titanium electrode.
In the scheme, the power supply has the characteristics of small volume, light weight, attractive appearance and the like. On the circuit, a small-scale integrated circuit design is adopted, and the circuit has the advantages of simple structure, few components, convenience in debugging and low production cost. In the aspect of display, seven-segment digital display is adopted. In the aspect of time control, binary coding is adopted, so that the operation is more convenient, the periodic setting can be carried out at regular time or irregular time, the setting time range is wide, and the setting can be carried out in units of milliseconds. Therefore, the device not only can be used for sewage treatment, but also can be widely applied to the aspects of electric appliance control such as small household appliances, universities and colleges, laboratories, test instruments and the like.
Based on the sewage treatment system of the embodiment, the sewage treatment method is described in detail, and the method specifically comprises the following steps:
the method comprises the following steps of obtaining system working parameters of a working period in advance, setting and storing the working parameters through a controller of a power supply, wherein the working parameters comprise positive and negative electrode switching time of the power supply, stirring system stirring stopping time, initial current intensity and a current decay rate constant, and the specific control process comprises the following steps:
and 5, repeatedly executing the step 3 and the step 4 until the sewage treatment is finished.
In the second embodiment, as shown in fig. 4,
the method comprises the following steps of taking the process of exchanging a positive electrode and a negative electrode of a power supply as a working cycle, taking a sewage treatment process comprising n working cycles, obtaining system working parameters of all the working cycles in advance according to methods such as experiments, detection, observation and the like, setting and storing the working parameters through a controller of the power supply, wherein the working parameters comprise the switching time of the positive electrode and the negative electrode of the power supply, the stirring time of a stirring system, initial current intensity, a current attenuation rate constant and the like, working parameters work in a linear attenuation mode for the output current intensity, and the specific control process comprises the following steps:
step 5, switching the working states of the anode and the cathode of the power supply after a time relay connected with the cathode of the power supply output end acts;
and 6, repeatedly executing the steps to the step 5 until the sewage treatment is finished.
In the third embodiment, as shown in fig. 5,
the specific operation of this embodiment is substantially the same as that of the third embodiment, except that the current intensity of this embodiment operates according to an exponential decreasing rule.
The stop time of the stirring system is set according to the following rule:
after the positive electrode and the negative electrode of the power supply are exchanged, the scaling substances attached to the original cathode electrode begin to fall off, and the stirring system is started to work after the scaling substances fall off and sink.
In the fourth embodiment, the first embodiment of the present invention,
an adjustable power supply, the specific circuit of which is shown in fig. 3 and 4, can be used in a sewage treatment system, the adjustable power supply adjusts the output current intensity according to the parameters of a load, the initial value and the change speed of the output current intensity are controlled by a controller according to the sampling value of a sensor, and the sensor is connected with the load; and after the output current intensity is adjusted, the power supply works in a constant current output state. The working principle and the working process of the power supply of the embodiment are shown in fig. 6 to 8.
The specific circuit parameters are as follows:
BK control transformer, VT 1-4: rectifier diodes forming a set of bridge rectifiers; c1: primary filtering, 1000 uf; : secondary filtering, 220 uf; r1; fixed resistance, 220 Ω; r2; adjustable resistance, 1k Ω; r11: the current limiting resistor is 1k omega, and the resistor is an adjustable resistor; r12: the current limiting resistor is 1k omega, and the resistor is an adjustable resistor; LED1 indicator light (light emitting diode); LED2 indicates a light (light emitting diode).
An integrated controller: the touch screen, seven-segment (or eight-segment) nixie tube display or PLC programmable controller, and two or more groups of time controllers are integrated.
Y0: and integrating the output of the controller.
JT controllable time relay: and controlling the time of the constant current power supply. Adjustable range: second: 0.01S-99.99S; dividing into: 1S-99M 99S; the method comprises the following steps: 1M to 99H99M or more.
J: and the output relay controls the polarity of the constant current power supply.
The output current intensity is adjusted through a variable resistor, and the controller is a PLC.
The adjustable power supply has the following advantages:
the appearance of the device has the characteristics of small volume, light weight, beautiful appearance and the like.
On the circuit, a small-scale integrated circuit design is adopted, and the circuit has the advantages of simple structure, few components, convenience in debugging and low production cost.
In the aspect of display, seven-segment digital display is adopted.
In the aspect of time control, binary coding is adopted, so that the operation is more convenient, the periodic setting can be carried out at regular time or irregular time, the adjustment time range is wide, and the setting can be carried out in units of milliseconds.
Therefore, the method can be widely applied to the aspects of electric appliance control such as water treatment, small household appliances, universities and colleges, laboratories, test instruments and the like.
Those skilled in the art will appreciate that variations may be implemented by those skilled in the art in combination with the prior art and the above-described embodiments, and will not be described herein in detail. Such variations do not affect the essence of the present invention, and are not described herein.
The above description is directed to the preferred embodiment of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that devices and structures not described in detail are understood to be implemented in a manner common in the art; without departing from the scope of the invention, it is intended that the present invention shall not be limited to the above-described embodiments, but that the present invention shall include all the modifications and variations of the embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still belong to the protection scope of the technical solution of the present invention, where the technical entity does not depart from the content of the technical solution of the present invention.
Claims (7)
1. The utility model provides a sewage treatment system, includes sewage treatment pond, sets up at least a pair of electrode and mixing system in sewage treatment pond, with the power of electrode connection, its characterized in that: the power supply can exchange positive and negative polarities according to preset time parameters.
2. The wastewater treatment system according to claim 1, wherein: after the positive pole and the negative pole of the power supply are exchanged, the stirring system stops delaying for a period of time and then starts to work.
3. The wastewater treatment system according to claim 2, wherein: the bottom surface of the sewage treatment tank is provided with an inclined surface structure which inclines towards the water outlet direction.
4. The wastewater treatment system according to claim 1, wherein: the power supply can convert the output current intensity, and a current intensity conversion constant is set according to the pollution degree parameter of the sewage.
5. The wastewater treatment system according to claim 4, wherein: the output current intensity is attenuated according to the rule of exponential decrease or linear decrease.
6. The wastewater treatment system according to any of claims 1 to 5, wherein: the electrode can be at least one of a conductive diamond coating electrode, a graphite electrode, a carbon fiber electrode, a graphene electrode and a ruthenium-titanium coating titanium electrode.
7. An adjustable power supply for use in the wastewater treatment system of any of claims 1 to 5, wherein: the adjustable power supply adjusts the output current intensity according to the parameters of the load, the initial value and the change speed of the output current intensity are controlled by the controller according to the sampling value of the sensor, and the sensor is connected with the load; and after the output current intensity is adjusted, the power supply works in a constant current output state.
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| CN111875005A (en) * | 2020-08-24 | 2020-11-03 | 太仓市盛达风机制造有限公司 | Sewage treatment system, sewage treatment method and adjustable power supply |
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| CN111875005A (en) * | 2020-08-24 | 2020-11-03 | 太仓市盛达风机制造有限公司 | Sewage treatment system, sewage treatment method and adjustable power supply |
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Effective date of registration: 20221213 Address after: 550081 No. 1, 1st Floor, Administration and R&D Building, No. 30, Duyun Road, Changling Street, Guiyang National Hi tech Industrial Development Zone, Guiyang City, Guizhou Province Patentee after: Guizhou Sidate Equipment Manufacturing Co.,Ltd. Address before: 215421 Songnan Industrial Development Zone, Shaxi Town, Taicang City, Suzhou City, Jiangsu Province Patentee before: Taicang Shengda Fan Manufacturing Co.,Ltd. |
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