CN103553180A - Ultrasonic pesticide wastewater degradation device with variable reaction volume - Google Patents
Ultrasonic pesticide wastewater degradation device with variable reaction volume Download PDFInfo
- Publication number
- CN103553180A CN103553180A CN201310556700.4A CN201310556700A CN103553180A CN 103553180 A CN103553180 A CN 103553180A CN 201310556700 A CN201310556700 A CN 201310556700A CN 103553180 A CN103553180 A CN 103553180A
- Authority
- CN
- China
- Prior art keywords
- ultrasonic
- module
- signal
- transverter
- liquid level
- Prior art date
Links
- 239000002351 wastewater Substances 0.000 title claims abstract description 27
- 238000006243 chemical reactions Methods 0.000 title claims abstract description 25
- 230000015556 catabolic process Effects 0.000 title abstract description 11
- 230000004059 degradation Effects 0.000 title abstract description 11
- 238000006731 degradation reactions Methods 0.000 title abstract description 11
- 239000000575 pesticides Substances 0.000 title abstract description 6
- 239000007788 liquids Substances 0.000 claims abstract description 28
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims abstract description 20
- 238000002955 isolation Methods 0.000 claims abstract description 17
- 230000003321 amplification Effects 0.000 claims abstract description 15
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 15
- 230000000875 corresponding Effects 0.000 claims description 24
- 239000003905 agrochemicals Substances 0.000 claims description 22
- 230000001808 coupling Effects 0.000 claims description 15
- 238000010168 coupling process Methods 0.000 claims description 15
- 238000005859 coupling reactions Methods 0.000 claims description 15
- 238000000354 decomposition reactions Methods 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 8
- 238000002604 ultrasonography Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000011901 water Substances 0.000 description 7
- 230000000593 degrading Effects 0.000 description 4
- 239000000447 pesticide residues Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering processes Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003000 nontoxic Effects 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- ACFVPYQFGCKHKH-UHFFFAOYSA-N C=NC1CCCC1 Chemical compound C=NC1CCCC1 ACFVPYQFGCKHKH-UHFFFAOYSA-N 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 238000010521 absorption reactions Methods 0.000 description 1
- 238000004458 analytical methods Methods 0.000 description 1
- 238000006065 biodegradation reactions Methods 0.000 description 1
- 238000001311 chemical methods and processes Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 238000010586 diagrams Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000006460 hydrolysis reactions Methods 0.000 description 1
- 238000000034 methods Methods 0.000 description 1
- 230000002906 microbiologic Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reactions Methods 0.000 description 1
- 238000000053 physical methods Methods 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 239000000376 reactants Substances 0.000 description 1
- 239000000126 substances Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
Technical field
The present invention relates to a kind of ultrasonic wave agricultural chemicals waste water decomposition apparatus of variable reactive capacity, belong to ultrasonic wave agricultural chemicals waste water degraded field.
Background technology
At present, a large amount of uses of traditional chemical agricultural chemicals have caused serious global environmental pollution and ecological damage.Along with the raising of people's living standard, the problem of environment and the eubiosis receives publicity day by day in recent years, how to eliminate the study hotspot that pesticide residue in environment have become countries in the world.In world wide, Methods of Degrading Pesticide Residues mainly contains at present:
The conventional physical methods such as 1, absorption, washing and irradiation.To the washing composition that the degraded removal effect of lower concentration remains of pesticide is thorough not, labour intensity is large, water loss is large and add, there is secondary pollution problem in this method in washing process.
2, the chemical process such as oxygenolysis, hydrolysis and photochemical degradation.Utilize this method degrading pesticide residues generally all more consuming time and cost is higher, effect is also not too obvious, and some intermediate products also can bring secondary pollution.
The biodegradation methods such as 3, microbiological deterioration, degrading enzyme and engineering bacteria.Current this method is applied less in actual production, and the stability of product and cost are often difficult to meet production practice requirement, need further research.
Therefore, develop a set of efficient, energy-conservation, water saving, nontoxic degrading pesticide residue method for enlivening processing of farm products market, save and utilize water resources, preserve the ecological environment and HUMAN HEALTH has important practical significance.At the beginning of the nineties, the advantage such as ultrasonic degradation technology is efficient with it, low consumption, equipment are simple, has caused researchist and stakeholder's concern, and Chinese scholars has been carried out more research in this respect.Although the existing correlative study that ultrasonic applications is degraded in agricultural chemicals waste water, but be mostly the qualitative analysis of the ultrasonic wave of research under certain fixed volume to the degraded of different concns different sorts agricultural chemicals waste water, all exist that complex structure, condition are fixed, degradation efficiency is low, the problems such as the wastewater flow rate of processing is immutable.
Summary of the invention
Technical problem to be solved by this invention is the defect that overcomes prior art, a kind of ultrasonic wave agricultural chemicals waste water decomposition apparatus of variable reactive capacity is provided, it can meet the agricultural chemicals waste water degraded under co-content not, and there is equally degradation capability well, prevent that transverter from, because excessive accumulated heat causes damage, having accelerated the cleaning degraded to agricultural chemicals waste water simultaneously.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: a kind of ultrasonic wave agricultural chemicals waste water decomposition apparatus of variable reactive capacity, and it comprises reaction vessel, liquid level switch, controller, multi-channel switch group, driving isolation module, power amplifier module, impedance-matching transformer, ultrasonic signal generation module, coupling inductance and a plurality of transverter; Wherein,
Reaction vessel, it has reactive tank;
Liquid level switch, its signal output part is connected with controller, and is arranged in reactive tank for gathering the liquid level signal of liquid in reactive tank and being passed to controller;
A plurality of transverters, it is arranged on reaction vessel to drive liquid generation cavitation effect in reactive tank, and is along the shape that is arranged side by side in liquid level lifting direction;
Ultrasonic signal generation module, its output terminal is connected with driving isolation module, for generation of ultrasound drive signals;
Driving isolation module, its output terminal is connected with power amplifier module, for driving power amplification module, works;
Power amplifier module, its output terminal is connected with impedance-matching transformer;
Impedance-matching transformer, its output terminal is connected with coupling inductance, for converting the impedance of corresponding transverter, it is mated with information source impedance phase;
Coupling inductance, its output terminal is connected with corresponding transverter selectivity by multi-channel switch group respectively, for the transverter to corresponding, carries out resonance matching;
Controller, its signal output part is connected with the control signal input terminus of multi-channel switch group, for producing corresponding switch-over control signal according to corresponding liquid level signal, passes to multi-channel switch group; Its signal output part is also connected with ultrasonic signal generation module, for transmitting on-off control order, to ultrasonic signal generation module, controls its start and stop.
Multi-channel switch group, for receiving corresponding switch-over control signal and selecting to connect coupling inductance and corresponding transverter.
Further, described ultrasonic signal generation module has SG3525 control chip.
Further, described driving isolation module comprises full bridge inverter and isolating transformer, isolating transformer has an input terminus and two output terminals, and the coil winding direction of two output terminals is anti-phase, the input terminus of full bridge inverter is connected with the output terminal of supersonic signal generator, the input terminus of isolating transformer is connected with the output terminal of full bridge inverter, and two output terminals of isolating transformer are connected with ultrasonic power amplification module respectively.
Further, described ultrasonic power amplification module is semi-bridge type D class power amplification circuit.
Further, described transverter is three, described multi-channel switch Zu Wei tri-tunnel stand alone type change-over switches.
Further, described a plurality of transverters are bonded in a side of reactive tank on reaction vessel.
Adopted after technique scheme; this ultrasonic wave agricultural chemicals waste water decomposition apparatus can be realized the ultrasonic wave agricultural chemicals waste water degraded of variable volume; be conducive to water saving; strengthen cleaning performance; protection transverter; and this apparatus structure is simple, it is convenient to control, to finding out a kind of efficient, energy-conservation, water saving, nontoxic agricultural chemicals waste water degradation method is significant.
Accompanying drawing explanation
Fig. 1 is the functional block diagram of the ultrasonic wave agricultural chemicals waste water decomposition apparatus of variable reactive capacity of the present invention;
Fig. 2 is the structural representation of reaction vessel of the present invention.
Embodiment
For content of the present invention is more easily expressly understood, according to specific embodiment also by reference to the accompanying drawings, the present invention is further detailed explanation below.
As shown in Figure 1, a ultrasonic wave agricultural chemicals waste water decomposition apparatus for capacity, it comprises reaction vessel 1, liquid level switch, controller, multi-channel switch group, driving isolation module, power amplifier module, impedance-matching transformer, ultrasonic signal generation module, coupling inductance and a plurality of transverter 2; Wherein,
Reaction vessel 1, it has reactive tank 1-1;
Liquid level switch, its signal output part is connected with controller, and is arranged in reactive tank 1-1 for gathering the liquid level signal of liquid in reactive tank 1-1 and being passed to controller;
A plurality of transverters 2, it is arranged on reaction vessel 1 to drive liquid generation cavitation effect in reactive tank 1-1, and is along the shape that is arranged side by side in liquid level lifting direction;
Ultrasonic signal generation module, its output terminal is connected with driving isolation module, for generation of ultrasound drive signals;
Driving isolation module, its output terminal is connected with power amplifier module, for driving power amplification module, works;
Power amplifier module, its output terminal is connected with impedance-matching transformer; For ultrasound drive signals is carried out to power magnification;
Impedance-matching transformer, its output terminal is connected with coupling inductance, for converting the impedance of corresponding transverter 2, it is mated with information source impedance phase;
Coupling inductance, its output terminal is connected with corresponding transverter 2 selectivity by multi-channel switch group respectively, for the transverter 2 to corresponding, carries out resonance matching; Coupling inductance and transverter 2 direct capacitance C 0realize resonance matching, coupling inductance can manual switchover sense value, in order to mate different direct capacitance C under different liquid level working ordeies 0;
Controller, its signal output part is connected with the control signal input terminus of multi-channel switch group, for producing corresponding switch-over control signal according to corresponding liquid level signal, passes to multi-channel switch group; Its signal output part is also connected with ultrasonic signal generation module, for transmitting on-off control order, to ultrasonic signal generation module, controls its start and stop.
Multi-channel switch group, for receiving corresponding switch-over control signal and selecting to connect coupling inductance and corresponding transverter 2.
Ultrasonic signal generation module has SG3525 control chip.By changing the 6th pin resistance value, produce ultrasonic wave actuate signal, output is connected with driving isolation module.
Controller adopts MSP430F149 micro-chip, controls the work of ultrasonic signal generation module, controls the break-make of three tunnel stand alone type electronics switches select corresponding transverter 2 work according to the feedback information of water level switch.
In order to improve the driving force of signal, be beneficial to and drive follow-up ultrasonic power amplification module, driving isolation circuit, for isolating ultrasonic signal generation module and power amplifier module, it comprises full bridge inverter and isolating transformer, wherein, the upper pipe of each half-bridge of full bridge inverter is NPN Darlington power transistor TIP122, and lower pipe is PNP Darlington power transistor TIP127, increases the power of ultrasonic signal, improve the driving force of signal, be beneficial to and drive follow-up ultrasonic power amplifier; The former sw turn ratio of isolating transformer is 1:1, isolating transformer has an input terminus and two output terminals, and the coil winding direction of two output terminals is anti-phase, the input terminus of full bridge inverter is connected with the output terminal of supersonic signal generator, the input terminus of isolating transformer is connected with the output terminal of full bridge inverter, and two output terminals of isolating transformer are connected with ultrasonic power amplification module respectively.
Ultrasonic power amplification module is semi-bridge type D class power amplification circuit, and the signal that front end is produced is converted to high voltage power signal, and output is connected to impedance-matching transformer.
As shown in Figure 2, the transverter 2 of reaction vessel 1 is three, multi-channel switch Zu Wei tri-tunnel stand alone type change-over switches, and transverter 2 is all bonded in a side of reactive tank 1-1 on reaction vessel 1.
The principle of work of the present embodiment is as follows:
First determine the ultrasonic frequency that experiment needs, in corresponding reaction vessel 1, add appropriate deionized water and reactant, suppose that experiment water level is at second transverter 2 place, controller detects the information that obtains height of liquid level after the signal of liquid level switch, two row's transverters 2 work below the group selection of control multi-channel switch, ultrasonic signal generation module produces the one pole square-wave signal that two-way with same frequency and reversed-phase peak value is 5V, be sent to the full bridge inverter in driving isolation module, the one pole square-wave signal that two-way with same frequency and reversed-phase peak value is 5V is exaggerated and is shaped as the bipolar square wave signal that a road peak value is 12V, signal is divided into two-way with same frequency and reversed-phase signal via isolating transformer, drive coupled power amplifier module, power amplifier module output terminal connects impedance-matching transformer, the source voltage of power amplifier module is the filtered voltage of 220V AC rectification (340V left and right), after being amplified, at power amplifier module output terminal, connect impedance-matching transformer, for realizing the impedance matching with transverter 2 circuit, impedance-matching transformer output terminal matching connection inductance, for realizing the resonance matching with transverter 2, coupling inductance output end connects three tunnel stand alone type change-over switches, be used for selecting corresponding transverter 2 work, under the effect of ultrasonic electric signal, transverter 2 is converted into high-frequency mechanical vibration by the ultrasonic electric signal of input and drives reaction vessel 1 vibration, thereby make the liquid generation ultrasonic cavitation effect in reaction vessel 1, agricultural chemicals waste water is cleaned and degraded, experiment finishes laggard row data gathering and analysis.
Above-described specific embodiment; technical problem, technical scheme and beneficial effect that the present invention is solved further describe; institute is understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310556700.4A CN103553180B (en) | 2013-11-11 | 2013-11-11 | Ultrasonic pesticide wastewater degradation device with variable reaction volume |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310556700.4A CN103553180B (en) | 2013-11-11 | 2013-11-11 | Ultrasonic pesticide wastewater degradation device with variable reaction volume |
Publications (2)
Publication Number | Publication Date |
---|---|
CN103553180A true CN103553180A (en) | 2014-02-05 |
CN103553180B CN103553180B (en) | 2015-02-11 |
Family
ID=50007602
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201310556700.4A CN103553180B (en) | 2013-11-11 | 2013-11-11 | Ultrasonic pesticide wastewater degradation device with variable reaction volume |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN103553180B (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102398959A (en) * | 2011-11-18 | 2012-04-04 | 江苏大学 | Method for degrading organophosphorus pesticide based on sweep-frequency double-frequency ultrasonic technology |
CN103252314A (en) * | 2013-05-13 | 2013-08-21 | 河海大学常州校区 | Dynamic matching device of ultrasonic power supply and method thereof |
CN103341466A (en) * | 2013-07-29 | 2013-10-09 | 河海大学常州校区 | Multi-frequency switchable underwater construction cleaning and maintenance device |
-
2013
- 2013-11-11 CN CN201310556700.4A patent/CN103553180B/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102398959A (en) * | 2011-11-18 | 2012-04-04 | 江苏大学 | Method for degrading organophosphorus pesticide based on sweep-frequency double-frequency ultrasonic technology |
CN103252314A (en) * | 2013-05-13 | 2013-08-21 | 河海大学常州校区 | Dynamic matching device of ultrasonic power supply and method thereof |
CN103341466A (en) * | 2013-07-29 | 2013-10-09 | 河海大学常州校区 | Multi-frequency switchable underwater construction cleaning and maintenance device |
Also Published As
Publication number | Publication date |
---|---|
CN103553180B (en) | 2015-02-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN104578345B (en) | Electromagnetic resonance type wireless charging device and control method based on CLL resonant transformation | |
CN100490294C (en) | Series resonant high-frequency chain sinusoidal wave inverse power supply circuit | |
CN101819184B (en) | Pulse ultrasonic wave transmitting circuit | |
CN101767061B (en) | Novel high-frequency and high-voltage power supply for electrostatic precipitation | |
CN202034903U (en) | Soft switching pressure rising direct current to direct current (DC-DC) convertor | |
CN1321911C (en) | Process and apparatus for removing ferromanganese from underground water | |
CN105915095A (en) | LC series resonance high frequency chain matrix-type inverter topology and resonance modulation method thereof | |
CN103638800B (en) | Utilize the device and method of hydrate continuous batch divided gas flow | |
CN104709241B (en) | Energy-saving ultrasonic wave Concealed automobile Wiper system | |
CN202830024U (en) | Anaerobic digestion integrated device for organic household garbage | |
CN105186892A (en) | Digital AD/DC power converter | |
CN206341145U (en) | A kind of dual transformer series parallel structure LLC resonant converter applied to electric automobile battery charger | |
CN101791733A (en) | Aluminium alloy twin-wire dipulse welding method and welding power supply thereof | |
CN200997000Y (en) | Water-exploring transmitter of ground nuclear magnetic resonant | |
CN203327305U (en) | Bridge-free PFC plus T type three-level inversion frequency-conversion light modulator | |
CN203370681U (en) | Solar small music fountain | |
CN101854089B (en) | Multi-winding motor and intelligent controller thereof | |
CN102398959B (en) | Method for degrading organophosphorus pesticide based on sweep-frequency double-frequency ultrasonic technology | |
CN101870722A (en) | Process for concentrating protein in soy protein wastewater by two-stage foam separation method | |
CN101345487A (en) | Primary sampling current controlled synchronous commutation driving circuit | |
CN103199727A (en) | Zero current switching full-bridge type non-isolated photovoltaic grid-connected inverter | |
CN103944402A (en) | Control method of excited push-pull converter with zero-voltage switching and excited push-pull converter | |
CN103051233A (en) | Non-isolated single-phase photovoltaic grid-connected inverter and on-off control timing sequence thereof | |
CN102480221B (en) | Application method of PFC (power factor correction) controller in Buck circuit | |
CN202379973U (en) | Air cooler for brewing spirit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
C14 | Grant of patent or utility model | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 Termination date: 20181111 |