CN201662710U - Double-parameter aeration control system for sewage treatment system - Google Patents
Double-parameter aeration control system for sewage treatment system Download PDFInfo
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- CN201662710U CN201662710U CN2010202976951U CN201020297695U CN201662710U CN 201662710 U CN201662710 U CN 201662710U CN 2010202976951 U CN2010202976951 U CN 2010202976951U CN 201020297695 U CN201020297695 U CN 201020297695U CN 201662710 U CN201662710 U CN 201662710U
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Abstract
The utility model provides a double-parameter aeration control system for a sewage treatment system, which comprises a programmable logic controller, a dissolved oxygen sensor and a frequency conversion blower which are respectively connected with the programmable logic controller, wherein the dissolved oxygen sensor comprises a dissolved oxygen probe and a transmitter thereof, and the dissolved oxygen probe is arranged in a main reaction zone of the sewage treatment system, is used for collecting dissolved oxygen data and conveys the transmitter to the programmable logic controller; the frequency conversion blower comprises a blower and a frequency converter thereof, and the blower is used for supplying oxygen to the main reaction zone of the sewage treatment system; and the programmable logic controller is used for receiving the dissolved oxygen data collected by the dissolved oxygen probe and controlling the oxygen supply amount of the frequency conversion blower. In the utility model, the PLC can always control the air amount of the frequency conversion blower according to the received DO data, thereby ensuring that DO in the main reaction zone can keep in an appropriate level for microorganisms, and accordingly, the treatment effect of the control system is good.
Description
Technical field
The utility model relates to a kind of and the supporting use of sewage disposal system, the control system of control sewage treatment process.
Background technology
Circulating type active sludge is handled (Cyclic Activated Sludge Technology, abbreviation CAST) technology belongs to a kind of modification of sequencing batch active sludge treatment process (SBR), the nucleus equipment of this technology is a batch reactor, aeration and aeration alternate run not in this reactor concentrate on bioprocesses and mud-water separation process in the treatment pond and to finish.
As shown in Figure 1, CAST reaction tank system comprises treatment pond, is divided into biological selecting area 29 and main reaction region 30 in the treatment pond.Diving mixer 6 is installed in the biological selecting area 29, and is communicated with water inlet system.Water inlet system comprises: inlet pipeline, be installed in intake pump 1 on this inlet pipeline, non-return valve 2, manually dish valve 3, water inlet electromagnetic flowmeter 4, manual dish valve 5; Submersible agitator 6 fully mixes with the mud that is back to biological selecting area 29 in order to realize water inlet.In main reaction region 30, be provided with blower system, micro-pore aeration system, strain water system, backflow (spoil disposal) system.Blower system comprises the air blast pipeline, is installed in frequency converter 7, fan blower 8, Hand-operated butterfly valve 9, gas meter 10 on this air blast pipeline.Micro-pore aeration system comprise some be arranged on main reaction region 30 bottoms and with the aeration tube of air blast pipeline connection, several micro porous aeration heads 11 are installed on the every aeration tube, and micro porous aeration head 11 can be realized efficiently passing oxygen and satisfy mud, water, gas three-phase turbulent mixture even; Strain water system and comprise pontoon type decanting device 17 and discharge pipe line thereof and be installed in draining motorized valve 19 on this discharge pipe line that be communicated with water injection pipe on this discharge pipe line, water injection pipe is communicated with main reaction region 30, and water filling motorized valve 18 is installed on the water injection pipe.(spoil disposal) system that refluxes comprises: the return line that is communicated with main reaction region 30, be installed in backflow main valve 21, reflux pump 22, non-return valve 23, mud discharge meter 24 on this return line, mud through mud discharge meter 24 is divided into two-way, one the tunnel through 26 discharges of spoil disposal motorized valve, and another road is back to the biological selecting area 29 of treatment pond through returned sluge motorized valve 25.
CAST reaction tank system moves in its supporting control system and in conjunction with under the manual control, water inlet, aeration, precipitate, strain water, idle be a processing cycle.The successful operation of CAST can be with carbonaceous organic material in the waste water and the pollutant removal that comprises nitrogen, phosphorus, and the water outlet total nitrogen concentration is less than 5mg/L.The CAST reaction tank is invested and operating cost is low, handling property is high, has been widely used in the processing of municipal effluent and various industrial waste waters.
In the engineering reality, control mode to the CAST technological process generally only limits to artificial control to aeration time, adopt the fixed fan blower aeration oxygen supply mode of frequently controlling simultaneously, be that interior fan blower operating frequency of aeration period is fixed, this mode has very big limitation, can't guarantee the suitable DO level of microorganism in the CAST reaction tank system, if the aeration deficiency then suppresses the growth of heterotrophic bacteria, nitrifier; Then cause unnecessary energy consumption waste if aeration is excessive, and influence mud flco structure and synchronous nitration and denitrification (SND) action effect, thereby reduce denitrification effect.Along with the raising day by day of sewage drainage standard, the especially raising that control requires to nitrogen phosphorus, the traditional control mode of this kind has been difficult to reach the requirement of emission standard.
The utility model content
The purpose of this utility model is to provide a kind of control system that is used for sewage disposal system, to solve the technical matters of the DO level that can't guarantee in the existing sewage disposal system that microorganism is suitable.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
The two-parameter aeration control system that is used for sewage disposal system of the present utility model, comprise programmable logic controller (PLC) and dissolved oxygen sensor that links to each other with described programmable logic controller (PLC) respectively and frequency conversion fan blower, wherein, described dissolved oxygen sensor comprises dissolved oxygen probe and dissolved oxygen DO transmitter thereof, described dissolved oxygen probe is installed in the main reaction region of sewage disposal system, be used to gather the dissolved oxygen DO data of described main reaction region, and pass to programmable logic controller (PLC) through described dissolved oxygen DO transmitter; Described frequency conversion fan blower comprises fan blower and blower variable frequency device thereof, and described fan blower is used for providing oxygen to the main reaction region of sewage disposal system; Described programmable logic controller (PLC) is used to receive the dissolved oxygen DO data that described dissolved oxygen probe is gathered, and according to the frequency of the described frequency conversion fan blower of this dissolved oxygen DO Data Control, and then controls the oxygen-supplying amount of described frequency conversion fan blower.
Described control system also comprises the input block that links to each other with described programmable logic controller (PLC), is used for importing or revising the parameter value that described programmable logic controller (PLC) is set.
Described programmable logic controller (PLC) also comprises the intake pump control module, is used for controlling the opening and closing of the intake pump of sewage disposal system; The stirrer control module is used for controlling the opening and closing of the submersible agitator of sewage disposal system; The mud control module is used for controlling the opening and closing of the returned sluge motorized valve and the spoil disposal motorized valve of sewage disposal system.
Described control system also comprises the display that links to each other with described programmable logic controller (PLC), is used for the running status of display control program.
Described control system also comprises the water inlet electromagnetic flowmeter that links to each other with described programmable logic controller (PLC), this water inlet electromagnetic flowmeter is used to measure the flow of inlet water data of sewage disposal system, described programmable logic controller (PLC) receives the data on flows that this water inlet electromagnetic flowmeter records, and sends on the described display and show.
Described control system also comprises the static pressure liquid level gauge that links to each other with described programmable logic controller (PLC), this static pressure liquid level gauge is used to measure the liquid level data of the main reaction region of sewage disposal system, described programmable logic controller (PLC) receives the liquid level data that described static pressure liquid level gauge records, and whether stops into water according to the intake pump that this liquid level data is controlled described sewage disposal system.
Described control system also comprises the gas meter that links to each other with described programmable logic controller (PLC), be used to measure the data on flows of described frequency conversion fan blower, described programmable logic controller (PLC) receives the data on flows that this gas meter records, and sends on the described display and show.
Described control system also comprises the mud discharge meter that links to each other with described programmable logic controller (PLC), be used to measure the data on flows that described sewage disposal system is discharged mud, described programmable logic controller (PLC) receives the data on flows that this mud discharge instrumentation gets, and sends on the described display and show.
Described control system also comprises the water control unit of straining that links to each other with described programmable logic controller (PLC), be used to control described sewage disposal system is installed strain the water filling motorized valve on the water lines and the keying of draining motorized valve.As shown from the above technical solution, advantage and the good effect that is used for the two-parameter aeration control system of sewage disposal system of the present utility model is: the utility model adopts the frequency conversion fan blower, the air quantity size of fan blower can be changed by the variation of frequency, thereby the size that amount of oxygen is provided can be changed; The utility model is provided with dissolved oxygen sensor in the main reaction region of sewage disposal system simultaneously, dissolved oxygen sensor can be gathered the content of dissolved oxygen DO DO in the main reaction region, PLC can be according to the DO data that the receive size of control of conversion fan blower air quantity constantly, thereby guaranteed that the DO in the main reaction can maintain the suitable level of microorganism, therefore, use control system treatment effect of the present utility model good.
In addition, the ORP sensor can be gathered the interior ORP data of main reaction region of mud control system, PLC to the analysis-by-synthesis of DO data and ORP data, judgement, processing after, can be further the accurate oxygen-supplying amount of control of conversion fan blower, not only the DO data can be maintained on the accurate numerical value, and help reducing energy dissipation.
With reference to the accompanying drawing description of a preferred embodiment, above-mentioned and other purpose of the present utility model, feature and advantage will be more obvious by following.
Description of drawings
Fig. 1 represents existing sewage disposal system and the synoptic diagram that is used for the two-parameter aeration control system of sewage disposal system of the present utility model is installed;
Fig. 2 represents the synoptic diagram that ORP changes with DO in the sewage disposal system;
Fig. 3 represents the frame principle figure of control system of the present utility model;
Fig. 4 represents the synoptic diagram at one of them interface of the display in the control system of the present utility model;
Fig. 5 represents the control flow chart of control system of the present utility model.
Embodiment
Describe specific embodiment of the utility model in detail below in conjunction with accompanying drawing.Should be noted that the embodiments described herein only is used to illustrate, be not limited to the utility model.
Parameters such as dissolved oxygen DO DO, oxidation-reduction potential ORP have material impact for pollutant removal and system's operation etc.
DO has important effect in whole biological treatment process, its process that changes biological de-carbon and nutrient removal exerts an influence, so can be by the variation of DO in the sewage disposal process, the removal situation of organism and nitrogen phosphorus in the prediction reaction zone, and then control aeration intensity and aeration time, so DO is feasible as controlled variable in theory.
For the ORP parameter, biological treatment system is the synthesis result that multiple oxidation material and reducing substances carry out redox reaction, and is all influential to ORP from the various redox state materials of sewage and bacterial metabolism effect generation.As nitrated process (nitrate of oxidation state generates) ORP is increased gradually, and along with denitrifying carrying out (exhausting of oxidation state material) ORP reduces gradually, so ORP is a parameter index preferably, itself and whole biochemical reaction process have good correlationship.ORP is subjected to a plurality of parameter influences such as the DO of system, pH value, water temperature again simultaneously, so its Changing Pattern in the sewage process, can reflect the situation of microbial degradation pollutant, can be used as the parameter of control.By to DO, the regretional analysis of ORP dependence on parameter, determined that there is the association of forward logarithm in the two, as shown in Figure 2.This shows that ORP can reflect the confession oxygen consumption quality of balance of activated Sludge System indirectly, and in addition, therefore respective sustain had determined the feasibility of ORP as controlled variable in certain absolute value level when ORP changed at substrate concentration (as COD, TN etc.).
As shown in figures 1 and 3, the two-parameter aeration control system that is used for sewage disposal system of the present utility model comprises programmable logic controller (PLC) and the dissolved oxygen DO DO sensor that links to each other with programmable logic controller (PLC) respectively, frequency conversion fan blower, oxidation-reduction potential ORP sensor, water inlet electromagnetic flowmeter 4, static pressure liquid level gauge 14, gas meter 10, mud discharge meter 24, input block and display 28.Wherein:
The frequency conversion fan blower comprises fan blower 8 and blower variable frequency device 7 thereof, and fan blower 8 is used for providing oxygen to the main reaction region 30 of sewage disposal system; Frequency conversion fan blower in the utility model can adopt Root's blower, also can adopt the frequency conversion fan blower of other types.
The DO sensor comprises DO probe 12 and DO transmitter 15 thereof, and DO probe 12 is installed in the main reaction region 30 of sewage disposal system, is used to gather the DO data of main reaction region 30, and passes to programmable logic controller (PLC) through DO transmitter 15.
The ORP sensor comprises ORP probe 13 and ORP transmitter 16 thereof, and ORP probe 13 is installed in the main reaction region 30 of sewage disposal system, is used to gather the ORP data of main reaction region 30, and passes to programmable logic controller (PLC) through ORP transmitter 16.
Programmable logic controller (PLC), be used to receive the DO data of DO probe 12 collections and the ORP data that ORP probe 13 is gathered, and the ORP data, the DO data that are received are analyzed, judge, handle, again according to the frequency of the Data Control frequency conversion fan blower after handling, and then the oxygen-supplying amount of control of conversion fan blower.
Input block is used for importing or revising the parameter value that programmable logic controller (PLC) is set.
Water inlet electromagnetic flowmeter 4 is used to measure the flow of inlet water data of sewage disposal system, is installed on the inlet pipeline of sewage disposal system, and programmable logic controller (PLC) receives the data on flows that water inlet electromagnetic flowmeter 4 records, and sends to demonstration on the display 28.According to the flow size, but the manual dish valve 3 of manual adjustment is controlled at scope of design with flow of inlet water, guarantees evenly water inlet.
Static pressure liquid level gauge 14 is used to measure the liquid level data of the main reaction region 30 of sewage disposal system, be installed in the main reaction region 30 of sewage disposal system, programmable logic controller (PLC) receives the liquid level data that static pressure liquid level gauge 14 records, and whether stops into water according to the intake pump 1 of this liquid level data control sewage disposal system.
Gas meter 10 is used to measure the data on flows of frequency conversion fan blower, is installed on the fan blower pipeline of sewage disposal system, and the data on flows that programmable logic controller (PLC) receiver gases flowmeter 10 records, and send to demonstration on the display 28.Gas meter 10 can adopt the gas vortex shedding flow meter, also can adopt the gas meter of other types.
Mud discharge meter 24 is used to measure the data on flows that sewage disposal system is discharged mud, is installed on the spoil disposal pipeline of sewage disposal system, and programmable logic controller (PLC) receives the data on flows that mud discharge meter 24 records, and sends to demonstration on the display 28.
In addition, programmable logic controller (PLC) can also comprise intake pump control module, stirrer control module and mud device control module.The intake pump control module is used for controlling the opening and closing of the intake pump 1 of sewage disposal system; The stirrer control module is used for controlling the opening and closing of the submersible agitator 6 of sewage disposal system; Mud device control module is used for controlling the opening and closing of the returned sluge motorized valve 25 and the spoil disposal motorized valve 26 of sewage disposal system.
In the utility model, PLC and other control sections can be concentrated to be arranged in the switch board 27, display 28 and input block can be provided with separately, also can be arranged in the switch board 27.
The utility model promptly is provided with three corresponding DO levels in the different periods of aeration at first with the parameter of DO as the control aeration, and for example, in the 120min aeration time, preceding 30min, middle 60min, back 30min keep DO1, DO2, DO3 level respectively.By the variation of contrast DO setting value and real signal value, the operating frequency of corresponding adjustment fan blower makes frequency with the DO positive change, thus the consolidation system pollutant removal.Show that by the data analysis result during the stable operation of ORP control aeration ORP control aeration mode has been realized denitrogenation dephosphorizing preferably equally, and parameter area is set, realized the saving of fan blower oxygen supply power consumption to a certain extent by optimizing ORP.
Comprehensive treatment effect and energy consumption are considered, preferential operating mode (70mV, 9mV, 20mV) the ORP controlling level of selecting, by keeping the ORP of aeration phase system at this optimum range, the relative optimum control of feasible system denitrogenation, and help reducing the energy consumption of frequency conversion fan blower.
In the engineering, can be 4 days in the employing cycle, be i.e. typical cycle of operation of T=4h, according to water inlet/aeration 2h, precipitate 1h, strain water/spoil disposal and idle 1h quadravalence section is carried out successively, work every day in 6 cycles.By the design of PLC, change control fan blower operation in real time with DO, realize the variable frequency adjustment air quantity, pre-set the corresponding operation duration and the equipment operation frequency on the interface by being provided with in the input block parameter.For ease of according to DO level control fan blower operating frequency, the aeration period is divided into three boundary's points, comprise the aeration initial setting period, as t1-t0 among Fig. 4; Aeration is set the period in mid-term, as t2-t1 among Fig. 4; The aeration later stage is set the period, and as t3-t2 among Fig. 4, generally, t1-t0 is 0.5 hour, and t2-t1 is 1 hour, and t3-t2 is 0.5 hour, according to different quality, water yield situation, can adjust the time set of different periods, all can set in PLC.Control system will be finished whole loop cycle process voluntarily according to the parameter command that presets.In addition, display is carried out round-the-clock display system operation, equipment operation good situations, parameter variation tendency such as DO, ORP, so that grasp running situation at any time.
To be divided into two step-lengths on the technology controlling and process program cycle and carry out, the global cycle period can adjust accordingly according to actual influent quality, water yield fluctuation, specifies as follows:
(1) water inlet, aeration
The executive component of water inlet is an intake pump 1.Under the control of PLC, this intake pump 1 timing automatic starts, pump trip after the working time that arrival is set.Simultaneously can also carry out interlocked control with static pressure liquid level gauge 14, promptly when liquid level reached setting height in the main reaction region 30, intake pump 1 stopped into water.Can be in the practical operation according to the aperture of the corresponding adjusting inlet pipeline of reading Hand-operated butterfly valve 3 of water inlet electromagnetic flowmeter 4.
The executive component of air feed is a Root's blower 8, under the control of PLC, can change operating frequency by frequency converter 7, optimizes the regulation and control wind supply quantity, and aeration time can be undertaken by setting the period.When inflation, according to the oxygen level of the three phases that can be provided with, can select for use DO/ORP to feed back as the scene, control fan blower work, realize different aeration intensities.
(2) precipitate and strain water
Straining the water start time carries out after precipitation finishes by setting value.Before straining water, because the water emptying in the drainpipe of last cycle, under buoyancy, the weir crest of water decanter of pontoon type decanting device 17 floats on more than the liquid level, can effectively avoid non-bleeding stage scum silica frost and mixed liquor to enter in the drainpipe.To setting and straining water during the time, then under the control of PLC, water filling motorized valve 18 is opened automatically, at first mend full water to straining in the mill weir bucket of pontoon type decanting device 17, make crest of weir be lower than liquid level by action of gravity, after this draining motorized valve 19 is opened automatically, and water filling motorized valve 18 cuts out, and starts pontoon type decanting device 17 and starts working.Knocking-off time is by setting the minimum liquid level decision.Simultaneously can also utilize 14 pairs of pontoon type decanting devices 17 of static pressure liquid level gauge to control, promptly when liquid level was reduced to minimum liquid level in the main reaction region 30, pontoon type decanting device 17 promptly quit work.
Need to prove that pontoon type decanting device 17 is applicable to the drainage arrangement in the middle-size and small-size wastewater treatment, heavy construction then can be used rotary-type water decanter instead.
(3) backflow and excess sludge discharge
Period of refluxing sets in advance in PLC, and when needing to reflux, PLC control starts returned sluge motorized valve 25 and reflux pump 22, according to the reading of mud discharge meter 24 manual adjustments backflow main valve 21 correspondingly, moves the size of required sludge back flow quantity to satisfy technology.
Spoil disposal generally carries out before straining water regularly by the input block setting.During spoil disposal, then start spoil disposal motorized valve 26 and reflux pump 22,, determine the sludge volume of every day according to corresponding mud length in age according to the reading of mud discharge meter 24 manual adjustments backflow main valve 21 correspondingly.
As shown in Figure 4, on DO control model basis,, determine the feasibility of ORP control mode by DO, ORP data are carried out analyzing and processing.When clicking " selecting the ORP pattern ", require in 3 periods of aeration setting, the control blower variable frequency is to keep ORP respectively in 3 level fluctuations setting (according to ORP signal feedback regulation and control blower frequency).
DO one-parameter control model is as follows:
(t1-t0) in the period, DO is in the x1 level in control; (t2-t1) in the period, DO is in the x2 level in control; (t3-t2) in the period, DO is in the x3 level in control.X1, x2, x3 are the DO value, and unit is mg/l, and generally x1 is 0.5～1.0mg/l, and x2 is 1.0～1.5mg/l, x3 is 1.5～2.5mg/l.According to different quality, water yield situation, can revise setting value.
ORP one-parameter control model is as follows:
(t1-t0) in the period, ORP is in the y1 level in control; (t2-t1) in the period, ORP is in the y2 level in control; (t3-t2) in the period, ORP is in the y3 level in control.Y1, y2, y3 are the ORP value, and unit is mV, and generally y1 is-70mV, and y2 is 9mV, y3 is 20mV.According to different quality, water yield situation, can revise setting value.
DO, the two-parameter interlock control model of ORP is as follows:
(t1-t0) in the period, ORP is in the y1 level in control; (t2-t1) in the period, ORP is in the y2 level in control; (t3-t2) in the period, DO is in the x3 level in control.Including DO in controlled variable in this stage, mainly is the DO level requirement of considering when circulating active sludge technology main reaction region 30 aerations finish.Can also select following combination in addition: (t1-t0) in the period, DO is in the x1 level in control, includes DO in controlled variable in this stage, mainly is the DO level requirement of considering the circulating active sludge technology main reaction region initial period of 30 aerations; (t2-t1) in the period, ORP is in the y2 level in control; (t3-t2) in the period, ORP is in the y3 level in control.In the same period, DO, ORP parameter can according to circumstances be selected one arbitrarily, to keep the optimum condition operation.In like manner, at DO, under the two-parameter interlock control model of ORP, the combination that can also have other parameters to select, wherein identical under x1, x2, x3, y1, y2, y3 numerical value and the one-parameter control model, according to different quality water yield situation, can revise the setting value of above x1, x2, x3, y1, y2, y3.
As shown in Figure 5, DO, ORP and frequency conversion fan blower are as follows by the PLC control program:
Activating DO(or ORP) after the control model, at the DO or the ORP of each section of holding time, as the actual DO(or the ORP of instrument feedback) data are in the permissible variation interval of setting the time, fan blower is then only controlled by the pid loop in the PLC.
When if DO concentration value in the main reaction region 30 or ORP concentration value are increased to deviation upper control limit point, the frequency conversion blower speed will be reduced to minimum speed and be kept operation, if when DO or ORP value do not drop to its deviation limit interval yet in delay time, the frequency conversion fan blower will stop, fall back to deviation range once more up to DO concentration (or ORP value), the interior pid control circuit of PLC this moment is activated and starts fan blower.
When if DO concentration value in the main reaction region 30 or ORP concentration value are reduced to the lower limit of variation, the frequency conversion fan blower will be with full rotation speed operation, after DO concentration value or ORP concentration value rise to deviation range, program will activate pid control circuit in the PLC once more to adjust the frequency of frequency conversion fan blower.
Along with the raising of automation degree of equipment, on-line analysis instrument in application in engineering, circulating active sludge technology is subjected to extensive concern, by the control of DO, ORP interlock parameter, changed limitation and deficiency on traditional aeration method of operation, will bring into play great potential and unique advantage at aspects such as denitrification dephosphorization technique optimization from now on and operating cost saving.
Though described the utility model with reference to several exemplary embodiments, should be appreciated that used term is explanation and exemplary and nonrestrictive term.The spirit or the essence that do not break away from utility model because the utility model can specifically be implemented in a variety of forms, so be to be understood that, the foregoing description is not limited to any aforesaid details, and should be in the spirit and scope that claim limited of enclosing explain widely, therefore fall into whole variations in claim or its equivalent scope and remodeling and all should be the claim of enclosing and contain.
Claims (10)
1. two-parameter aeration control system that is used for sewage disposal system is characterized in that: comprise programmable logic controller (PLC) and dissolved oxygen sensor that links to each other with described programmable logic controller (PLC) respectively and frequency conversion fan blower, wherein,
Described dissolved oxygen sensor comprises dissolved oxygen probe (12) and dissolved oxygen DO transmitter (15) thereof, described dissolved oxygen probe (12) is installed in the main reaction region (30) of sewage disposal system, be used to gather the dissolved oxygen DO data of described main reaction region (30), and pass to programmable logic controller (PLC) through described dissolved oxygen DO transmitter (15);
Described frequency conversion fan blower comprises fan blower (8) and blower variable frequency device (7) thereof, and the main reaction region (30) that described fan blower (8) is used for to sewage disposal system provides oxygen;
Described programmable logic controller (PLC) is used to receive the dissolved oxygen DO data that described dissolved oxygen probe (12) is gathered, and according to the frequency of the described frequency conversion fan blower of this dissolved oxygen DO Data Control, and then controls the oxygen-supplying amount of described frequency conversion fan blower.
2. the two-parameter aeration control system that is used for sewage disposal system as claimed in claim 1, it is characterized in that: described control system also comprises the oxidation-reduction potential sensor that links to each other with described programmable logic controller (PLC), described oxidation-reduction potential sensor comprises oxidation-reduction potential probe (13) and oxidation-reduction potential transmitter (16) thereof, described oxidation-reduction potential probe (13) is installed in the main reaction region (30) of sewage disposal system, be used to gather the oxidation-reduction potential data of described main reaction region (30), and pass to programmable logic controller (PLC) through described oxidation-reduction potential transmitter (16); Described programmable logic controller (PLC) is used to receive the oxidation-reduction potential data that described oxidation-reduction potential probe (13) is gathered, and described oxidation-reduction potential data, dissolved oxygen DO data are analyzed, judge, handle, again according to the frequency of the described frequency conversion fan blower of Data Control after handling, and then control the oxygen-supplying amount of described frequency conversion fan blower.
3. the two-parameter aeration control system that is used for sewage disposal system as claimed in claim 2, it is characterized in that: described control system also comprises the input block that links to each other with described programmable logic controller (PLC), is used for importing or revising the parameter value that described programmable logic controller (PLC) is set.
4. the two-parameter aeration control system that is used for sewage disposal system as claimed in claim 3, it is characterized in that: described programmable logic controller (PLC) also comprises
The intake pump control module is used for controlling the opening and closing of the intake pump (1) of sewage disposal system;
The stirrer control module is used for controlling the opening and closing of the submersible agitator (6) of sewage disposal system;
The mud control module is used for controlling the opening and closing of the returned sluge motorized valve (25) and the spoil disposal motorized valve (26) of sewage disposal system.
5. as each described two-parameter aeration control system that is used for sewage disposal system of claim 1-4, it is characterized in that: described control system also comprises the display (28) that links to each other with described programmable logic controller (PLC), is used for the running status of display control program.
6. the two-parameter aeration control system that is used for sewage disposal system as claimed in claim 5, it is characterized in that: described control system also comprises the water inlet electromagnetic flowmeter (4) that links to each other with described programmable logic controller (PLC), this water inlet electromagnetic flowmeter (4) is used to measure the flow of inlet water data of sewage disposal system, described programmable logic controller (PLC) receives the data on flows that this water inlet electromagnetic flowmeter (4) records, and sends to upward demonstration of described display (28).
7. the two-parameter aeration control system that is used for sewage disposal system as claimed in claim 6, it is characterized in that: described control system also comprises the static pressure liquid level gauge (14) that links to each other with described programmable logic controller (PLC), this static pressure liquid level gauge (14) is used to measure the liquid level data of the main reaction region (30) of sewage disposal system, described programmable logic controller (PLC) receives the liquid level data that described static pressure liquid level gauge (14) records, and whether stops into water according to the intake pump (1) that this liquid level data is controlled described sewage disposal system.
8. the two-parameter aeration control system that is used for sewage disposal system as claimed in claim 7, it is characterized in that: described control system also comprises the gas meter (10) that links to each other with described programmable logic controller (PLC), be used to measure the data on flows of described frequency conversion fan blower, described programmable logic controller (PLC) receives the data on flows that this gas meter (10) records, and sends to upward demonstration of described display (28).
9. the two-parameter aeration control system that is used for sewage disposal system as claimed in claim 8, it is characterized in that: described control system also comprises the mud discharge meter (24) that links to each other with described programmable logic controller (PLC), be used to measure the data on flows that described sewage disposal system is discharged mud, described programmable logic controller (PLC) receives the data on flows that this mud discharge meter (24) records, and sends to upward demonstration of described display (28).
10. the two-parameter aeration control system that is used for sewage disposal system as claimed in claim 9, it is characterized in that: described control system also comprises the water control unit of straining that links to each other with described programmable logic controller (PLC), be used to control described sewage disposal system is installed strain the water filling motorized valve (18) on the water lines and the keying of draining motorized valve (19).
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183910A (en) * | 2010-12-03 | 2011-09-14 | 北京工业大学 | Method for detecting specific oxygen utilization rate of activated sludge microorganism online based on frequency control |
| CN102557282A (en) * | 2012-01-13 | 2012-07-11 | 同济大学 | Mud-water interface oxidation reduction electric potential regulating and control method of urban heavy pollution water body |
| CN104102255A (en) * | 2014-07-17 | 2014-10-15 | 北京城市排水集团有限责任公司 | Ammonia nitrogen coupling dissolved oxygen aeration energy-saving control system and control method |
| CN104111618A (en) * | 2014-05-28 | 2014-10-22 | 河北科技大学 | Activated sludge sewage processing aeration link model, sliding mode controller and control method |
| CN105549519A (en) * | 2014-10-28 | 2016-05-04 | 兰州理工大学 | Automation control system of liming process in production process of gelatin |
| CN105565608A (en) * | 2016-02-03 | 2016-05-11 | 中北大学 | Data mining based sewage treatment system |
| CN109354156A (en) * | 2018-12-12 | 2019-02-19 | 辽宁科技学院 | A kind of aerating system of biochemical sewage processing pond |
| CN111470617A (en) * | 2020-04-19 | 2020-07-31 | 重庆成峰水务工程有限责任公司 | Flora control system of integrated sewage treatment device |
| CN111533246A (en) * | 2020-04-20 | 2020-08-14 | 中麒赋能水务科技股份有限公司 | Synchronous denitrification accurate aeration system |
| CN112076638A (en) * | 2020-09-14 | 2020-12-15 | 江苏泓润生物质能科技有限公司 | Simple sludge slurrying system and method |
-
2010
- 2010-08-19 CN CN2010202976951U patent/CN201662710U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183910B (en) * | 2010-12-03 | 2012-10-24 | 北京工业大学 | Method for detecting specific oxygen utilization rate of activated sludge microorganism online based on frequency control |
| CN102183910A (en) * | 2010-12-03 | 2011-09-14 | 北京工业大学 | Method for detecting specific oxygen utilization rate of activated sludge microorganism online based on frequency control |
| CN102557282A (en) * | 2012-01-13 | 2012-07-11 | 同济大学 | Mud-water interface oxidation reduction electric potential regulating and control method of urban heavy pollution water body |
| CN104111618A (en) * | 2014-05-28 | 2014-10-22 | 河北科技大学 | Activated sludge sewage processing aeration link model, sliding mode controller and control method |
| CN104102255B (en) * | 2014-07-17 | 2017-05-31 | 北京城市排水集团有限责任公司 | Ammonia nitrogen couples dissolved oxygen aeration energy-saving control system and control method |
| CN104102255A (en) * | 2014-07-17 | 2014-10-15 | 北京城市排水集团有限责任公司 | Ammonia nitrogen coupling dissolved oxygen aeration energy-saving control system and control method |
| CN105549519A (en) * | 2014-10-28 | 2016-05-04 | 兰州理工大学 | Automation control system of liming process in production process of gelatin |
| CN105565608A (en) * | 2016-02-03 | 2016-05-11 | 中北大学 | Data mining based sewage treatment system |
| CN105565608B (en) * | 2016-02-03 | 2017-11-10 | 中北大学 | A kind of sewage disposal system based on data mining |
| CN109354156A (en) * | 2018-12-12 | 2019-02-19 | 辽宁科技学院 | A kind of aerating system of biochemical sewage processing pond |
| CN109354156B (en) * | 2018-12-12 | 2021-08-06 | 辽宁科技学院 | Aeration system of biochemical sewage treatment tank |
| CN111470617A (en) * | 2020-04-19 | 2020-07-31 | 重庆成峰水务工程有限责任公司 | Flora control system of integrated sewage treatment device |
| CN111533246A (en) * | 2020-04-20 | 2020-08-14 | 中麒赋能水务科技股份有限公司 | Synchronous denitrification accurate aeration system |
| CN112076638A (en) * | 2020-09-14 | 2020-12-15 | 江苏泓润生物质能科技有限公司 | Simple sludge slurrying system and method |
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