WO2017147807A1

WO2017147807A1 - Novel sewage treatment system based on feedback control technology

Info

Publication number: WO2017147807A1
Application number: PCT/CN2016/075298
Authority: WO
Inventors: 马骏
Original assignee: 马骏
Priority date: 2016-03-02
Filing date: 2016-03-02
Publication date: 2017-09-08

Abstract

A sewage treatment system based on feedback control technology. The sewage treatment system comprises a primary sewage filtering mechanism, a primary switch control mechanism, a secondary sewage filtering mechanism, a secondary switch control mechanism and a central control device. The primary sewage filtering mechanism and the secondary sewage filtering mechanism are provided with detection mechanisms. The system monitors in real time flow volumes of each system position via a detection mechanism of a flow sensor (7), feeds data back to the central control device, and then ensures the filtering effect of each filtering mechanism is maximized via control of a low-pressure switch (4) and a high-pressure switch (10), thereby increasing filtering efficacy of the system. By adding an optical coupler (N1) to a flow-volume monitoring circuit and a transistor (Q1) to a valve control circuit, the reliability of the system is enhanced.

Description

A new type of wastewater treatment system based on feedback control technology

Technical field

The invention relates to a novel wastewater treatment system based on feedback control technology.

Background technique

With the acceleration of modern urban construction, the accompanying pollution problems have become more and more serious, and people have begun to treat polluted wastewater in order to reduce environmental pollution.

In the prior art, the wastewater treatment system adopts various filtering mechanisms for filtering, but in the process of filtering, due to insufficient control precision of the flow rate, the filtering effect of each filtering mechanism is easily reduced, and the filtering effect of the system is reduced; Not only that, in the detection circuit of the flow, due to the lack of good isolation protection for the circuit, the internal circuit is often damaged by external interference, thereby reducing the reliability of the system.

Summary of the invention

The technical problem to be solved by the present invention is to provide a novel wastewater treatment system based on feedback control technology in order to overcome the lack of flow monitoring feedback in the prior art and the lack of isolation protection of the detection circuit.

The technical solution adopted by the present invention to solve the technical problem thereof is: a novel wastewater treatment system based on feedback control technology, which is characterized in that it comprises a primary wastewater filtering mechanism, a primary switch control mechanism, a secondary wastewater filtration mechanism, and a secondary a switch control mechanism and a central control device, the first-stage wastewater filtering mechanism and the secondary wastewater filtering mechanism are provided with a detecting mechanism, the first-stage wastewater filtering mechanism, the first-stage switch control mechanism, the secondary wastewater filtering mechanism, and the second-stage The switch control mechanism and the detecting mechanism are electrically connected to the central control device;

The primary wastewater filtration mechanism includes a first wastewater filtration unit, a second wastewater filtration unit, and a third wastewater filtration unit that are sequentially connected, and the primary switch control mechanism includes a low pressure switch, a first valve, and a boost pump that are sequentially connected The first valve is connected to the first wastewater filtering unit through a low pressure switch. Said first valve is connected to the secondary waste water filtering mechanism by a booster pump;

The secondary wastewater filtration mechanism includes a reverse osmosis membrane filter and a post-activated carbon filter, the secondary switch control mechanism includes a high-pressure switch and a pressure tank, and the reverse osmosis membrane filter is connected to the post-activated carbon filter through a high-pressure switch, The pressure tank is connected to the high pressure switch, and the reverse osmosis membrane filter is connected with the second valve;

The detecting mechanism includes a flow sensor, and the post-activated carbon filter and the third wastewater filtering unit are both connected to a flow sensor. The central control device is provided with a flow monitoring module, and the flow sensor is electrically connected with the flow monitoring module. The flow monitoring module includes a flow monitoring circuit including a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first diode, and an optocoupler, the first of the optocouplers The second terminal is connected to the first resistor and the second resistor, and the second end of the optocoupler is connected to the first resistor and the second resistor respectively, and the first end of the optocoupler passes through a series circuit of a fourth resistor, a third resistor and a first diode is connected to the second end of the optocoupler, the cathode of the first diode is connected to the second end of the optocoupler, and the third end of the optocoupler The terminal is grounded, and the fourth end of the optocoupler is externally connected to a 5V DC voltage source through a fifth resistor.

Specifically, the PP cotton filter has the characteristics of small volume, large filtration area and high precision. The granular activated carbon filter has the characteristics of decolorization and odor removal, and the compressed activated carbon filter has the characteristics of high filtration effect, thereby ensuring the filtration effect of the water treatment system. The first wastewater filtration unit comprises a PP cotton filter element, the second wastewater filtration unit comprises a granular activated carbon filter element, and the third wastewater filtration unit comprises a compressed activated carbon filter element.

Specifically, the first valve is a water inlet solenoid valve.

Specifically, the second valve is a belt waste water ratio solenoid valve.

Specifically, in order to improve the reliability of the system control valve, the central control device is provided with a valve control module, the valve control module includes a valve control circuit, and the valve control circuit includes a sixth a resistor, a seventh resistor, a capacitor, a second diode, a relay, and a triode, wherein an emitter of the triode is grounded, and a base of the triode is grounded through a series circuit of a seventh resistor, a sixth resistor, and a capacitor The collector of the triode is externally connected to a 5V DC voltage source via a coil of the relay, the second diode is connected in parallel with the coil of the relay, and the cathode of the second diode is externally connected to a 5V DC voltage source.

Specifically, the triode is an NPN triode.

Specifically, the first valve and the second valve are both electrically connected to the valve control module.

The invention has the beneficial effects that the novel wastewater treatment system based on the feedback control technology monitors the flow in the system in real time through the flow sensor, and then feeds back to the central control device, and controls each filter mechanism by controlling the low pressure switch and the high voltage switch. Maximize the filtration effect, thus improving the filtration effect of the wastewater treatment system; not only that, by adding optocoupler in the flow monitoring circuit, the circuit is safely isolated, thereby improving the reliability of the system, and the triode is used in the valve control circuit. The fast response and reduced pressure ensure the reliability of the valve control and further improve the reliability of the system.

DRAWINGS

The invention will now be further described with reference to the drawings and embodiments.

1 is a schematic structural view of a novel wastewater treatment system based on feedback control technology of the present invention;

2 is a circuit schematic diagram of a flow rate monitoring circuit of a novel wastewater treatment system based on feedback control technology of the present invention;

3 is a circuit schematic diagram of a valve control circuit of a novel wastewater treatment system based on feedback control technology of the present invention;

In the figure: 1. The first wastewater filtration unit, 2. The second wastewater filtration unit, 3. The third wastewater filtration unit, 4. The low pressure switch, 5. The first valve, 6. The booster pump, 7. The flow sensor, 8 Reverse osmosis membrane filter, 9. Second valve, 10. High pressure switch, 11. Pressure tank, 12. Rear activated carbon filter, R1. First resistance, R2. Two resistors, R3. Third resistor, R4. Fourth resistor, R5. Fifth resistor, R6. Sixth resistor, R7. Seventh resistor, D1. First diode, D2. Second diode, N1 Optocoupler, C1. Capacitor, Q1. Transistor, K1. Relay.

detailed description

The invention will now be described in further detail with reference to the drawings. The drawings are simplified schematic diagrams, and only the basic structure of the present invention is illustrated in a schematic manner, and thus only the configurations related to the present invention are shown.

As shown in FIG. 1 to FIG. 3, a novel wastewater treatment system based on feedback control technology is characterized in that it comprises a primary wastewater filtration mechanism, a primary switch control mechanism, a secondary wastewater filtration mechanism, a secondary switch control mechanism, and The central control device, the first-stage wastewater filtering mechanism and the secondary wastewater filtering mechanism are provided with a detecting mechanism, the first-stage wastewater filtering mechanism, the primary switch control mechanism, the secondary wastewater filtering mechanism, the secondary switch control mechanism, and The detecting mechanism is electrically connected to the central control device;

The primary wastewater filtering mechanism includes a first wastewater filtration unit 1, a second wastewater filtration unit 2, and a third wastewater filtration unit 3 that are sequentially connected, and the primary switch control mechanism includes a low pressure switch 4 and a first valve that are sequentially connected. 5 and a booster pump 6, the first valve 5 is in communication with the first waste water filtration unit 1 through the low pressure switch 4, and the first valve 5 is connected to the secondary waste water filtration mechanism through the booster pump 6;

The secondary waste water filtering mechanism comprises a reverse osmosis membrane filter 8 and a post-activated carbon filter 12, the secondary switch control mechanism comprises a high-pressure switch 10 and a pressure tank 11, and the reverse osmosis membrane filter 8 passes through the high-pressure switch 10 and the rear The pressure activated carbon filter 12 is connected to the high pressure switch 10, the reverse osmosis membrane filter 8 is connected to the second valve 9;

The detecting mechanism comprises a flow sensor 7, wherein the post-activated activated carbon filter 12 and the third wastewater filtering unit 3 are connected to a flow sensor 7, wherein the central control device is provided with a flow monitoring module, the flow sensor 7 and flow monitoring The module is electrically connected, and the flow monitoring module includes a flow monitoring circuit, and the flow monitoring circuit includes a first resistor R1, a second resistor R2, a third resistor R3, and a fourth resistor R4. a fifth resistor R5, a first diode D1, and an optocoupler N1. The first end of the optocoupler N1 is connected to a series circuit of a fourth resistor R4, a first resistor R1 and a second resistor R2. The optocoupler N1 The second end of the photocoupler N1 is connected to the first resistor R1 and the second resistor R2, and the first end of the optocoupler N1 is connected through a series circuit of a fourth resistor R4, a third resistor R3 and a first diode D1. The second end of the optocoupler N1 is connected to the second end of the optocoupler N1, the third end of the optocoupler N1 is grounded, and the fourth end of the optocoupler N1 is The fifth resistor R5 is externally connected to a 5V DC voltage source.

Specifically, the PP cotton filter has the characteristics of small volume, large filtration area and high precision. The granular activated carbon filter has the characteristics of decolorization and odor removal, and the compressed activated carbon filter has the characteristics of high filtration effect, thereby ensuring the filtration effect of the water treatment system. The first wastewater filtration unit 1 comprises a PP cotton filter element, the second wastewater filtration unit 2 comprises a granular activated carbon filter element, and the third wastewater filtration unit 3 comprises a compressed activated carbon filter element.

Specifically, the first valve 5 is a water inlet solenoid valve.

Specifically, the second valve 9 is a belt waste water ratio solenoid valve.

Specifically, in order to improve the reliability of the system control valve, the central control device is provided with a valve control module, the valve control module includes a valve control circuit, and the valve control circuit includes a sixth resistor R6 and a seventh resistor R7. Capacitor C1, second diode D2, relay K1 and transistor Q1, the emitter of the transistor Q1 is grounded, and the base of the transistor Q1 is grounded through a series circuit composed of a seventh resistor R7, a sixth resistor R6 and a capacitor C1. The collector of the transistor Q1 is externally connected to a 5V DC voltage source via a coil of the relay K1, the second diode D2 is connected in parallel with the coil of the relay K1, and the cathode of the second diode D2 is externally connected to a 5V DC voltage source.

Specifically, the transistor Q1 is an NPN transistor.

Specifically, the first valve 5 and the second valve 9 are both electrically connected to the valve control module.

The working principle of the new wastewater treatment system based on feedback control technology is: first, the wastewater passes through A wastewater filtration unit 1, a second wastewater filtration unit 2 and a third wastewater filtration unit 3 are filtered, wherein the first wastewater filtration unit 1 comprises a PP cotton filter core, and the PP cotton filter core has the characteristics of small volume, large filtration area and high precision; The second wastewater filtration unit 2 comprises a granular activated carbon filter element, which utilizes the granular activated carbon filter element to have the characteristics of decolorization and odor removal; the third wastewater filtration unit 3 comprises a compressed activated carbon filter element, and the compressed activated carbon filter element has the characteristics of high-efficiency filtration effect, thereby ensuring water treatment. The filtering effect of the system. The first-stage switch control mechanism ensures that the wastewater enters the secondary wastewater filtering mechanism for filtration, wherein the reverse osmosis membrane filter 8 separates the water from the impurities by using the principle of reverse osmosis, wherein the treated water enters the post-activated activated carbon filter 12 for treatment. The processed impurities are discharged through the second valve 9, and in order to ensure the reliability of the filtration, a high-pressure switch 10 is added behind the reverse osmosis membrane filter 8 to ensure smooth reverse osmosis filtration; the rear activated carbon filter 12 will be reversed. The water after the permeable membrane filter 8 is treated to soften, improve the mouthfeel, and ensure the reliability and practicability of the water treatment system; not only, the rear end of the rear activated carbon filter 12 and the rear end of the third wastewater filtration unit 3 are provided through The flow sensor 7 monitors the flow in all parts of the system in real time, and then feeds back to the central control device. By controlling the low pressure switch 4 and the high pressure switch 10, the filtering effect of each filter mechanism is maximized, thereby improving the filtration effect of the wastewater treatment system.

In order to ensure the reliability of the flow detection, the circuit is safely isolated by adding the optocoupler N1 in the flow monitoring circuit, thereby improving the reliability of the system.

In order to ensure the reliability of the valve control, the switch of the relay K1 is controlled by the on/off of the triode Q1, thereby ensuring the switch of the valve, wherein the reliability of the valve control is ensured by the characteristics of the quick response and the pressure drop of the triode Q1.

Compared with the prior art, the new wastewater treatment system based on the feedback control technology monitors the flow in the system through the flow sensor 7 in real time, and then feeds back to the central control device, and controls the low pressure switch 4 and the high voltage switch 10 to ensure Each filter mechanism maximizes filtration, thereby increasing wastewater The filtering effect of the processing system; not only that, by adding the optocoupler N1 in the flow monitoring circuit, the circuit is safely isolated, thereby improving the reliability of the system, and the valve control circuit utilizes the transistor Q1 to have a fast response speed and a reduced voltage. Features ensure the reliability of the valve control and further improve the reliability of the system.

In view of the above-described embodiments of the present invention, various changes and modifications may be made by those skilled in the art without departing from the scope of the invention. The technical scope of the present invention is not limited to the contents of the specification, and the technical scope thereof must be determined according to the scope of the claims.

Claims

A novel wastewater treatment system based on feedback control technology, characterized in that it comprises a first-stage wastewater filtering mechanism, a primary switch control mechanism, a secondary wastewater filtering mechanism, a secondary switch control mechanism and a central control device, and the primary wastewater A filtering mechanism is disposed on the filtering mechanism and the secondary wastewater filtering mechanism, and the first-stage wastewater filtering mechanism, the primary switching control mechanism, the secondary wastewater filtering mechanism, the secondary switch control mechanism, and the detecting mechanism are electrically connected to the central control device. ;

The primary wastewater filtration mechanism includes a first wastewater filtration unit (1), a second wastewater filtration unit (2), and a third wastewater filtration unit (3) that are sequentially connected, and the primary switch control mechanism includes a low pressure that is sequentially connected a switch (4), a first valve (5) and a booster pump (6), the first valve (5) being in communication with the first wastewater filtration unit (1) via a low pressure switch (4), the first valve ( 5) communicating with the secondary wastewater filtering mechanism through the booster pump (6);

The secondary wastewater filtering mechanism comprises a reverse osmosis membrane filter (8) and a post-activated carbon filter (12), the secondary switch control mechanism comprising a high pressure switch (10) and a pressure tank (11), the reverse osmosis membrane filter (8) communicating with a post-activated carbon filter (12) through a high-pressure switch (10), the pressure tank (11) is connected to a high-pressure switch (10), and the reverse osmosis membrane filter (8) is connected to a second valve (9) );

The detecting mechanism includes a flow sensor (7), and the post-activated carbon filter (12) and the third wastewater filtering unit (3) are both connected to a flow sensor (7), and the central control device is provided with a flow monitoring module. The flow sensor (7) is electrically connected to the flow monitoring module, the flow monitoring module includes a flow monitoring circuit, and the flow monitoring circuit includes a first resistor (R1), a second resistor (R2), and a third resistor (R3). a fourth resistor (R4), a fifth resistor (R5), a first diode (D1), and an optocoupler (N1), the first end and the fourth resistor (R4) of the optocoupler (N1), first a series circuit comprising a resistor (R1) and a second resistor (R2), wherein the second end of the optocoupler (N1) is respectively connected to the first resistor (R1) and the second resistor (R2), the light The first end of the coupling (N1) is connected to the second end of the optocoupler (N1) through a series circuit composed of a fourth resistor (R4), a third resistor (R3) and a first diode (D1), a cathode of the first diode (D1) is connected to a second end of the optocoupler (N1), a third end of the optocoupler (N1) is grounded, and a fourth end of the optocoupler (N1) is passed through a fifth resistor (R5) External 5V DC voltage power supply.
A novel wastewater treatment system based on feedback control technology according to claim 1, wherein said first wastewater filtration unit (1) comprises a PP cotton filter element, and said second wastewater filtration unit (2) comprises a granular activated carbon filter element The third wastewater filtration unit (3) comprises a compressed activated carbon filter element.
A novel wastewater treatment system based on feedback control technology according to claim 1, wherein said first valve (5) is a water inlet solenoid valve.
A novel wastewater treatment system based on feedback control technology according to claim 1, wherein said second valve (9) is a waste water ratio solenoid valve.
A novel wastewater treatment system based on feedback control technology according to claim 1, wherein said central control device is provided with a valve control module, said valve control module comprising a valve control circuit, said valve control circuit comprising a six resistor (R6), a seventh resistor (R7), a capacitor (C1), a second diode (D2), a relay (K1), and a triode (Q1), the emitter of the triode (Q1) being grounded, The base of the transistor (Q1) is grounded through a series circuit composed of a seventh resistor (R7), a sixth resistor (R6), and a capacitor (C1), and the collector of the transistor (Q1) is externally connected to the coil of the relay (K1) by 5V. The DC voltage source, the second diode (D2) is connected in parallel with the coil of the relay (K1), and the cathode of the second diode (D2) is externally connected to a 5V DC voltage source.
A novel wastewater treatment system based on feedback control technology according to claim 5, wherein said triode (Q1) is an NPN triode.
A novel wastewater treatment system based on feedback control technology according to claim 5, wherein said first valve (5) and said second valve (9) are both electrically connected to a valve control module.