CN208500473U - A kind of wastewater pH intelligent regulating device - Google Patents

Abstract

The utility model discloses a kind of wastewater pH intelligent regulating devices, including reaction tank, the reaction tank side, which is connected with into waste pipe and the other side, is provided with outlet pipe, it is provided at the top of the reaction tank into acid and is responsible for, it is described be provided with first into acid supervisor side and be in charge of be in charge of with second, it is described to be responsible for into acid, first is in charge of and is in charge of junction with second and is provided with threeway, and it is connected by threeway, control valve is provided on the outlet pipe, reaction tank side outer wall is provided with PID controller, the reaction tank intracavity bottom is vertically equipped with partition, the partition includes first partition and second partition.The utility model passes through the multistage reaction tank adjusted of design, and hydrochloric acid is added according to pH and flow automatically using PID controller, it solves because the detected value of the online instrument of pH has certain hysteresis quality, wastewater pH after causing neutralization reaction to adjust fluctuates frequent occurrence, or even the waste problem of medicament is be easy to cause beyond required pH range.

Description

A kind of wastewater pH intelligent regulating device

Technical field

The utility model relates to technical field of waste water purification, in particular to a kind of wastewater pH intelligent regulating device.

Background technique

Sour (alkali) property waste water is a kind of common industrial wastewater, if although unprocessed direct emission or process processing The not up to discharge standard of national regulation is to environmental emission, it will causes seriously to pollute and destroy to human environment, at present acid (alkali) property wastewater processing technology generallys use two methods of the mutual neutralisation of acidic and alkaline wastewater and dispensing neutralisation, both sides The common ground of method is that neutralization reaction occurs in neutralization pond by acidic materials and alkaline matter, and required facility includes neutralizing Reaction tank, mechanical agitator, chemicals dosing plant, PLC control device, the online instrument of pH that neutralization reaction pond end is set, and foundation PH detects value of feedback, and the added amount of chemical of dosing pump is controlled to adjust by PLC.

In terms of structure type, the neutralization pond reactor of the above method belongs to plug flow reactor.Due to acid-base neutralization reaction Reaction time and waste water is needed to have certain residence time in plug flow reactor, so that the detected value of the online instrument of pH has There is certain hysteresis quality, the wastewater pH after causing neutralization reaction to adjust fluctuates frequent occurrence, or even beyond required pH range, It is easy to cause the waste of medicament.

Therefore, it is necessary to solve the above problems to invent a kind of wastewater pH intelligent regulating device.

Utility model content

The purpose of this utility model is to provide a kind of wastewater pH intelligent regulating devices, pass through the multistage reaction adjusted of design Pond, and hydrochloric acid is added according to pH and flow automatically using PID controller, it is mentioned above in the background art because pH is online to solve The detected value of instrument has certain hysteresis quality, and the wastewater pH after causing neutralization reaction to adjust fluctuates frequent occurrence, or even exceeds institute It is required that pH range and be easy to cause the waste problem of medicament.

To achieve the above object, the utility model provides the following technical solutions: a kind of wastewater pH intelligent regulating device, including Reaction tank, the reaction tank side are connected with into waste pipe and the other side and are provided with outlet pipe, setting at the top of the reaction tank Have into acid and be responsible for, it is described be provided with first into acid supervisor side and be in charge of be in charge of with second, it is described to be in charge of and the into acid supervisor, first Two, which are in charge of junction, is provided with threeway, and is connected by threeway, and control valve, the reaction tank one are provided on the outlet pipe Side outer wall is provided with PID controller, and the reaction tank intracavity bottom is vertically equipped with partition, and the partition includes first partition and Reaction tank inner cavity is divided into level-one regulatory region, second level regulatory region and clean water area by two partitions, the first partition and second partition, The second level regulatory region is set between level-one regulatory region and clean water area, described to adjust into waste pipe inner cavity top and level-one Area, second level regulatory region and clean water area intracavity bottom are provided with pH meter, the level-one regulatory region and second level regulatory region bottom outer wall It is provided with motor, the motor output shaft end is connected with agitating shaft, and the clean water area intracavity bottom is provided with circulating pump, described Circulating pump end is connected with return pipe.

Preferably, it is described be in charge of to be in charge of with second into waste pipe, first be provided with variable frequency pump and flowmeter, the stream Meter is set to the inside of variable frequency pump.

Preferably, the first partition and second partition are arranged in staged, and first partition is short in second partition.

Preferably, the first partition and second partition side are provided with liquid level sensor, the first partition and Through discharge outlet is equipped on two partitions, the liquid level sensor is set at the top of discharge outlet.

Preferably, described first is in charge of the level-one regulatory region inside the connected reaction pond of end, and described second is in charge of and flows back Tube end is connected to second level regulatory region.

Preferably, the reaction tank inner cavity top is provided with fixing buckle, and the return pipe is fixed button and is fixed on inner cavity top Portion.

Preferably, the agitating shaft is vertically arranged between the horizontal axis and the longitudinal axis by horizontally and vertically forming, and on horizontal axis There are the remaining length of the longitudinal axis, the longitudinal axis two sides are provided with groove for lower end.

Preferably, the PID controller is made of proportional unit P, integral unit I and differentiation element D, the pH frequency conversion Pump, flowmeter, pH meter, liquid level sensor and circulating pump are electrically connected with PID controller.

The technical effect and advantage of the utility model:

1, by the multistage reaction tank adjusted of design, and hydrochloric acid is added according to pH and flow using PID controller automatically, solved It has determined because the detected value of the online instrument of pH has certain hysteresis quality, the wastewater pH wave frequent occurrence after causing neutralization reaction to adjust It moves, or even be easy to cause the waste problem of medicament beyond required pH range；

2, by being equipped with return pipe, so that can recycled if the liquid pH value after reacting in clean water area is not still up to standard Third time is carried out in the liquid reflux to second level regulatory region for making it internal under the action of pump and neutralizes adjusting, can be arranged until up to standard Out, it ensure that the pH of discharge of wastewater meets environmental requirement；

3, by being equipped with fixing buckle, a towing force can be provided to return pipe, to reduce itself weight bearing of return pipe, it is ensured that liquid Stablizing for body reflux course carries out；

4, be conducive to increase agitating shaft just to contact in rotation direction with reaction solution by being equipped with groove in longitudinal axis two sides Area accelerates the rate of neutralization reaction to improve the stirring effect to reaction solution.

Detailed description of the invention

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is the diaphragm structure schematic diagram of the utility model；

Fig. 3 is the agitating shaft top view of the utility model；

Fig. 4 is the PID control schematic diagram of the utility model；

In figure: 1 reaction tank, 2 into waste pipe, 3 into acid supervisor, 4 first be in charge of, 5 second be in charge of, 6 threeways, 7 variable frequency pumps, 8 Flowmeter, 9 outlet pipes, 10 control valves, 11 PID controllers, 12 partitions, 13 first partitions, 14 second partitions, 15 level-ones are adjusted Area, 16 second level regulatory regions, 17 clean water areas, 18 pH meters, 19 motors, 20 agitating shafts, 21 liquid level sensors, 22 circulating pumps, 23 reflux Pipe, 24 fixing buckles, 25 discharge outlet, 26 horizontal axis, 27 longitudinal axis.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

The utility model provides a kind of wastewater pH intelligent regulating device as shown in Figs 1-4, including reaction tank 1, described 1 side of reaction tank is connected with into waste pipe 2 and the other side and is provided with outlet pipe 9, is provided at the top of the reaction tank 1 main into acid Pipe 3, it is described 3 sides of acid supervisor be provided with first be in charge of 4 and second be in charge of 5, it is described to be in charge of 4 and second into acid supervisor 3, first It is in charge of 5 junctions and is provided with threeway 6, and be connected by threeway 6, control valve 10, the reaction is provided on the outlet pipe 9 1 side outer wall of pond is provided with PID controller 11, and 1 intracavity bottom of reaction tank is vertically equipped with partition 12, and the partition 12 includes 1 inner cavity of reaction tank is divided into level-one and adjusted by first partition 13 and second partition 14, the first partition 13 and second partition 14 Area 15, second level regulatory region 16 and clean water area 17, the second level regulatory region 16 are set between level-one regulatory region 15 and clean water area 17, It is described to be provided with into 2 inner cavity top of waste pipe and level-one regulatory region 15, second level regulatory region 16 and 17 intracavity bottom of clean water area PH meter 18, the level-one regulatory region 15 and 16 bottom outer wall of second level regulatory region are provided with motor 19,19 output shaft end of motor Portion is connected with agitating shaft 20, and 17 intracavity bottom of clean water area is provided with circulating pump 22, and 22 end of circulating pump is connected with back Flow tube 23 can make inside it if the liquid pH value in clean water area 17 after reaction is not still up to standard under the action of circulating pump 22 Liquid reflux to second level regulatory region 16 in carry out third time and neutralize to adjust, until up to standard can be discharged.

Further, in the above-mentioned technical solutions, described to be in charge of 4 and second into waste pipe 2, first and be in charge of on 6 and be respectively provided with There are variable frequency pump 7 and flowmeter 8, the flowmeter 8 is set to the inside of variable frequency pump 7, can be according to the data and knot that pH meter 18 is fed back The data for collaborating meter 8, the frequency of variable frequency pump 7 is controlled by PID controller 11, so that control reaction solution is automatically injected speed Degree.

Further, in the above-mentioned technical solutions, the first partition 13 is arranged with second partition 14 in staged, and the One partition 13 is short in second partition 14, carries out to neutralize system subregion, to accelerate the neutralization rate of reaction solution.

Further, in the above-mentioned technical solutions, the first partition 13 and 14 side of second partition are provided with liquid level Sensor 21, the liquid level variation where can be used for real-time monitoring in conversion zone, so that pan feeding speed is adjusted, avoids not having It crosses the partition 12 of region and leads to the confusion of neutralization system, through being equipped in the first partition 13 and second partition 14 Discharge outlet 25, the liquid level sensor 21 are set to 25 top of discharge outlet, so that the reaction residue in the conversion zone of place can be saturating Discharge outlet 25 is crossed to be flowed into next region.

Further, in the above-mentioned technical solutions, the described first level-one for being in charge of inside 4 end connected reaction ponds 1 is adjusted Area 15, described second, which is in charge of 16, is connected to second level regulatory region 16 with 23 end of return pipe,.

Further, in the above-mentioned technical solutions, 1 inner cavity top of reaction tank is provided with fixing buckle 24, the reflux Pipe 23 is fixed button 24 and is fixed on inner cavity top, a towing force can be provided to return pipe 23, to reduce bearing certainly for return pipe 23 Weight, it is ensured that stablizing for liquid reflux process carries out.

Further, in the above-mentioned technical solutions, the agitating shaft 20 is made of horizontal axis 26 and the longitudinal axis 27, the horizontal axis 26 It is vertically arranged between the longitudinal axis 27, and 26 upper and lower side of horizontal axis, there are the remaining length of the longitudinal axis 27,27 two sides of the longitudinal axis are provided with Groove is conducive to increase agitating shaft 20 in rotation direction with the positive contact surface of reaction solution product, stirs to improve reaction solution Dynamic effect, accelerates the rate of neutralization reaction.

Further, in the above-mentioned technical solutions, the PID controller 11 is by proportional unit P, integral unit I and differential Cells D composition, wherein ratio control is the basis of PID control, and integration control can eliminate steady-state error, but can increase super It adjusts, differential control can then accelerate Great inertia system response speed and weaken overshoot trend, the variable frequency pump 7, flowmeter 8, pH Meter 18, liquid level sensor 21 and circulating pump 22 are electrically connected with PID controller 11, the model that the liquid level sensor 21 is selected For JYB-KO-L, what the flowmeter 8 was selected is EXQ41W fluid flowmeter.

This practical working principle:

Referring to Figure of description 1, in use, by injecting waste water to be processed into reaction tank 1 into waste pipe 2, Meanwhile by injecting hydrochloric acid into reaction tank 1 into acid supervisor 3, and start motor 19, makes it that agitating shaft 20 be driven to rotate, allow useless It coming into full contact between water and hydrochloric acid, during neutralization reaction carries out, pH meter 18 is in real time monitored the pH value of reaction solution, And pH fluctuation information is transferred to PID controller 11, the letter that PID controller 11 is then fed back according to pH meter 18 and flowmeter 8 in time Breath is to be adjusted the frequency of variable frequency pump 7, to control the speed of automatic plus hydrochloric acid, to reduce the pH fluctuation model of reaction solution It encloses, avoids the serious overshoot of controlled volume, and as reaction carries out, the liquid level in the conversion zone of place is gradually increasing, once do not have Discharge outlet 25 is crossed, the reaction residue in conversion zone can be flowed into next region through discharge outlet 25, if clean water area 17 Liquid pH value after interior reaction is not still up to standard, then its internal liquid can be back to second level adjusting under the action of circulating pump 22 Third time is carried out in area 16 and neutralizes adjusting, can be discharged until up to standard；

Referring to Figure of description 2, during reaction solution transregional flowing, as reaction carries out, in the conversion zone of place Liquid level be gradually increasing, once do not had discharge outlet 25, the reaction residue in conversion zone can through discharge outlet 25 be flowed into it is next In a region；

Referring to Figure of description 3, during being stirred using agitating shaft 26 to reaction solution, and agitating shaft 20 is by cross Axis 26 and the longitudinal axis 27 form, and are vertically arranged between horizontal axis 26 and the longitudinal axis 27, and there are the longitudinal axis 27 in 26 upper and lower side of horizontal axis Remaining length greatly accelerated with to complete to stir the reaction solution of 26 upper and lower of horizontal axis simultaneously under the drive of motor 19 And reaction rate, 27 two sides of the longitudinal axis are provided with groove, be conducive to increase agitating shaft 20 in rotation direction with reaction solution just Contact area accelerates the rate of neutralization reaction to improve the stirring effect to reaction solution；

Referring to Figure of description 4, PID controller 11 is exactly the error according to system in the process of work, using than Example, integral, difference gauge calculate what control amount was controlled, wherein ratio control is a kind of simplest control mode, control The output of device relationship proportional to input error signal, when only proportional control, there are steady-state errors for system output；It is integrating In control, the output of controller and the integral of input error signal are proportional, to an automatic control system, if into Enter after stable state that there are steady-state errors, then claiming this control system is to have steady-state error or referred to as have poor system, steady in order to eliminate State error must be introduced into " integral term " in the controller, and integral term depends on the integral of time to error, with the increasing of time Add, integral term will increase, even if it pushes controller in this way, error very little, integral term can also increase as time increases Output increase further decrease steady-state error, until be equal to zero；In differential control, the output of controller and error originated from input The differential (i.e. the change rate of error) of signal is proportional, and automatic control system may in the adjustment process for overcoming error There is oscillation even unstability, the reason is that having due to there are larger inertia component (link) or having lag module and inhibiting to miss The effect of difference, variation always lag behind the variation of error, and solution is the variation " advanced " for making to inhibit the effect of error, I.e. when error is close to zero, inhibiting the effect of error should be just zero, this is to say, it is past only introduce " ratio " item in the controller Toward be it is inadequate, the effect of proportional is only the amplitude of fault in enlargement, and needs increased to be " differential term ", it can predict error The trend of variation, in this way, having ratio+differential controller, it will be able to make the control action for inhibiting error be equal to zero in advance, very Most negative value, so as to avoid the serious overshoot of controlled volume.

Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic It is equivalently replaced, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on, It should be included within the scope of protection of this utility model.

Claims (8)

1. a kind of wastewater pH intelligent regulating device, including reaction tank (1), it is characterised in that: reaction tank (1) side is connected with It is provided with outlet pipe (9) into waste pipe (2) and the other side, is provided at the top of the reaction tank (1) into acid and is responsible for (3), it is described It is provided with first into acid supervisor (3) side and is in charge of (4) and second and be in charge of (5), it is described to be in charge of (4) and the into acid supervisor (3), first Two, which are in charge of (5) junction, is provided with threeway (6), and is connected by threeway (6), is provided with control valve on the outlet pipe (9) (10), reaction tank (1) side outer wall is provided with PID controller (11), reaction tank (1) intracavity bottom be vertically equipped with every Plate (12), the partition (12) include first partition (13) and second partition (14), the first partition (13) and second partition (14) reaction tank (1) inner cavity is divided into level-one regulatory region (15), second level regulatory region (16) and clean water area (17), the second level tune Section area (16) is set between level-one regulatory region (15) and clean water area (17), described into waste pipe (2) inner cavity top and level-one Regulatory region (15), second level regulatory region (16) and clean water area (17) intracavity bottom are provided with pH meter (18), the level-one regulatory region (15) it is provided with motor (19) with second level regulatory region (16) bottom outer wall, motor (19) output shaft end is connected with agitating shaft (20), clean water area (17) intracavity bottom is provided with circulating pump (22), and circulating pump (22) end is connected with return pipe (23).

2. a kind of wastewater pH intelligent regulating device according to claim 1, it is characterised in that: described into waste pipe (2), One, which is in charge of (4) and second, is in charge of on (6) and is provided with variable frequency pump (7) and flowmeter (8), and the flowmeter (8) is set to frequency conversion Pump the inside of (7).

3. a kind of wastewater pH intelligent regulating device according to claim 1, it is characterised in that: the first partition (13) with Second partition (14) is arranged in staged, and first partition (13) is short in second partition (14).

4. a kind of wastewater pH intelligent regulating device according to claim 1, it is characterised in that: the first partition (13) and Second partition (14) side is provided with liquid level sensor (21), is run through on the first partition (13) and second partition (14) Equipped with discharge outlet (25), the liquid level sensor (21) is set at the top of discharge outlet (25).

5. a kind of wastewater pH intelligent regulating device according to claim 1, it is characterised in that: described first is in charge of (4) end The internal level-one regulatory region (15) of portion's connected reaction pond (1), described second, which is in charge of (16), is connected to two with return pipe (23) end Grade regulatory region (16).

6. a kind of wastewater pH intelligent regulating device according to claim 1, it is characterised in that: reaction tank (1) inner cavity Top is provided with fixing buckle (24), and the return pipe (23) is fixed button (24) and is fixed on inner cavity top.

7. a kind of wastewater pH intelligent regulating device according to claim 1, it is characterised in that: the agitating shaft (20) is by cross Axis (26) and the longitudinal axis (27) composition, are vertically arranged, and horizontal axis (26) upper and lower side stays between the horizontal axis (26) and the longitudinal axis (27) There is the remaining length of the longitudinal axis (27), the longitudinal axis (27) two sides are provided with groove.

8. a kind of wastewater pH intelligent regulating device according to claim 1, it is characterised in that: the PID controller (11) It is made of proportional unit P, integral unit I and differentiation element D, the pH variable frequency pump (7), flowmeter (8), pH meter (18), liquid level Sensor (21) and circulating pump (22) are electrically connected with PID controller (11).