CN108479343B - Intelligent control method based on three-bin-body type organic waste gas treatment equipment - Google Patents
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- B01D53/34—Chemical or biological purification of waste gases
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- B01D53/34—Chemical or biological purification of waste gases
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Abstract
The invention provides an intelligent control method based on a three-bin organic waste gas treatment device, which is characterized in that the three bins of the device are transversely arranged, an upper air distribution plate and a lower air distribution plate are arranged in each bin, biological filler beneficial to microbial strain adsorption is filled between the two air distribution plates, a water distributor is arranged on the upper part of the upper air distribution plate, and three electric valves for controlling flow are arranged at the water inlet end of the water distributor. The intelligent control program is used for automatically regulating and controlling process parameters of each section and establishing a mathematical model by monitoring VOCs at an inlet and an outlet, oxidation-reduction potential of circulating water, pH value of the circulating water, VOCs value at an outlet of each bin body, pipeline pressure, air exhaust amount and other data. Three sets of standard control programs are arranged in the mathematical model, so that the waste gas treatment equipment runs according to the built-in programs, the labor consumption is reduced, the energy and material consumption is reduced, and meanwhile, the mathematical model is simple to operate and stable to control.
Description
Technical Field
The invention relates to the field of volatile organic waste gas treatment, in particular to an intelligent control method based on three-bin-body type organic waste gas treatment equipment.
Background
At the present stage, different places and industries have different requirements on the discharge standard of VOCs (volatile organic waste gas), most of the existing waste gas treatment engineering equipment is designed according to different discharge standards, however, the manual consumption in the process is high, the control is complex and unstable, the energy and material consumption is huge, special personnel is needed to watch, the automation degree is not high, and the improper parameter imbalance can be caused due to improper operation, the exhaust exceeding standard is slightly caused, the process parameter disorder is seriously caused, and the new debugging is needed to be used.
Disclosure of Invention
Aiming at the technical defects, the invention provides an intelligent control method based on three-bin-type organic waste gas treatment equipment, which comprises the following steps:
1. installing equipment: three-chamber organic waste gas treatment equipment is arranged, three chambers are transversely arranged, an upper air distribution plate and a lower air distribution plate are arranged in each chamber, biological filler which is beneficial to microbial strain adsorption is filled between the two air distribution plates, a water distributor is arranged at the upper part of the upper air distribution plate, an electric valve for controlling flow is arranged at the water inlet end of the water distributor, the electric valves are sequentially marked as an electric valve 1, an electric valve 2 and an electric valve 3 according to the path of organic waste gas flowing through the three chambers, a diversion trench is formed at the bottom of each chamber and used for receiving sprayed nutrient solution, the nutrient solution is collected into a circulating water tank and is connected with the electric valve through a circulating pump and a pipeline, air guide channels are communicated between the adjacent chambers, the positions of the air guide channels on the chambers are high and low, one air guide channel is higher than the position of the upper air distribution plate, and the other air guide channel is lower than the position of, organic waste gas enters the bin body through an air guide duct lower than the air distribution plate at the lower layer, the flow track of the organic waste gas in the three bin bodies is S-shaped, a low-inlet and high-outlet state is formed, the organic waste gas enters the first bin body through a pipeline, then sequentially passes through the three bin bodies for degradation such as spraying, contact oxidation, adsorption, bio-trickling filtration processes and the like, and is discharged through the air guide duct of the last bin body.
2. Data monitoring: the entrance of organic waste gas entering the first bin body, the air induction channels of the two bin bodies, the exit of the organic waste gas are respectively provided with a VOCs monitor, the monitored data of the organic waste gas are respectively marked as VOCs1, VOCs2, VOCs3 and VOCs4, the entrance of the organic waste gas entering the first bin body is provided with an air volume and pressure monitor for monitoring the air volume and the air pressure, a circulating water tank is provided with a pH meter, an ORP meter, an acid-base dosing pump and an oxidant dosing pump, the pH meter and the ORP meter are used for monitoring the pH value and the ORP value of nutrient solution, the air induction channel of the organic waste gas discharged from the last bin body is connected with an air draft fan, the air draft fan is regulated and controlled by a fan frequency converter, the three-bin type organic waste gas treatment equipment is provided with an intelligent control box, the intelligent control box collects and processes the monitoring data, and regulates and controls and connects an electric valve, a circulating pump, an, the air quantity and air pressure monitor monitors numerical feedback signals to control a fan frequency converter, an ORP meter feedback signal to control an oxidant dosing pump, and a pH meter feedback signal to control an acid-base dosing pump.
3. Starting the equipment: after the device is started, the device automatically records time, and the running time is 120 hours based on the actual running time. At this stage, the electric valve 1, the electric valve 2 and the electric valve 3 are all opened, domesticated microbial strains in the cabin body are rapidly propagated and grown under the supplement of nutrient solution, the wind pressure is controlled to be-10 Pa in standard atmosphere, and the pH value is controlled to be 7-9 in a standard mode.
4. A debugging stage: after the equipment starting stage is completed, the equipment debugging stage is started, the parameters are automatically selected or manually input according to VOCs1 by taking (VOCs3-VOCs 4)/VOCs 3 as the standard, the electric valve 1 and the electric valve 2 are opened in the stage, the electric valve 3 is closed, the ORP value is controlled between 300 and 400, the oxidation effect is ensured, meanwhile, the ORP value is also controlled by (VOCs1-VOCs3)/VOCs1, and the ORP value is also automatically selected or manually input according to VOCs 1.
5. And (3) a stabilization stage: when (VOCs3-VOCs 4)/VOCs 3 reach a certain value, the debugging stage is predicted to be finished, the stable stage is entered, based on (VOCs2-VOCs 3)/VOCs 2, the parameters are automatically selected or manually input according to VOCs1, the electric valve 1 is opened in the stage, the electric valve 2 and the electric valve 3 are closed, the ORP control is between 200 and 300, the oxidation effect is ensured, meanwhile, the ORP value is also controlled by (VOCs1-VOCs 2)/VOCs 1, and the ORP value is also automatically selected or manually input according to VOCs 1.
6. And (3) a normal operation stage: when (VOCs2-VOCs 3)/VOCs 2 reach a certain value, the stabilization stage is predicted to be finished, the normal operation stage is started, the electric valve 1, the electric valve 2 and the electric valve 3 are all closed in the stage, the circulating water pump is closed, the operation of the exhaust fan is regulated and controlled only through the monitoring value of the wind pressure, and the exhaust effect is guaranteed.
Preferably, an ORP meter is installed on each of the three cartridges, and the monitoring data of the organic waste gas entering the inlet of the first cartridge, i.e. the VOCs1, is divided into three data sections, namely, low concentration: and (3) carrying out downward cultivation at a concentration of less than 500 mg/m: 500-1000mg/m and high concentration: more than 1000mg/m, during thin film cultivation, when VOCs1 is under less than 500mg/m, ORP values of the three bin bodies are sequentially controlled at 800, 600 according to the air flow direction, during thin film cultivation, when VOCs1 is under 500 thin film cultivation, ORP values of the three bin bodies are sequentially controlled at 900, 700, 600 according to the air flow direction, during thin film cultivation, when VOCs1 is under more than 1000mg/m, ORP values of the three bin bodies are sequentially controlled at 900, 800, 600 according to the air flow direction.
Preferably, the range of values reached by (VOCs3-VOCs 4)/VOCs 3 during the stabilization phase is 50-60%, and the range of values reached by (VOCs2-VOCs 3)/VOCs 2 during the normal operation phase is 80-90%.
According to the invention, through monitoring VOCs at an inlet and an outlet, oxidation-reduction potential of circulating water, pH value of the circulating water, VOCs values at outlets of all bin bodies, pipeline pressure, air exhaust amount and other data, process parameters of all sections are automatically regulated and controlled, and a mathematical model is established. Three sets of standard control programs are arranged in the mathematical model, so that the waste gas treatment equipment runs according to the built-in programs, the labor consumption is reduced, the energy and material consumption is reduced, and meanwhile, the mathematical model is simple to operate and stable to control. Compared with the prior art, the intelligent control technology is adopted to control the waste gas treatment process, unattended operation can be realized, the system automatically and stably operates, the medicament cost is saved by more than 20%, and the standard reaching rate of equipment operation is more than 95%.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a schematic structural diagram of a three-chamber organic waste gas treatment apparatus according to the present invention;
in the figure: 1-a cabin body; 2-air distribution plate; 3-a water distributor; 4-an air guide channel; 5-circulating water tank.
Detailed Description
The invention is further described with reference to the accompanying drawings, and as shown in fig. 1 and 2, the invention provides an intelligent control method based on a three-bin organic waste gas treatment device, which comprises the steps of firstly arranging the three-bin organic waste gas treatment device, arranging three bins 1 of the device transversely, arranging an upper air distribution plate and a lower air distribution plate 2 in each bin 1, filling biological filler beneficial to microbial strain adsorption between the two air distribution plates 2, arranging a water distributor 3 on the upper part of the upper air distribution plate 2, installing an electric valve for controlling flow at the water inlet end of the water distributor 3, sequentially marking the electric valve 1, the electric valve 2 and the electric valve 3 according to the path of organic waste gas flowing through the three bins 1, arranging a diversion trench at the bottom of the bin 1 for receiving sprayed nutrient solution, collecting the nutrient solution into a circulating water tank 5, and then is connected with an electric valve through a circulating pump and a pipeline, an air guide channel is arranged between adjacent bin bodies 1 and is communicated with each other, organic waste gas enters a first bin body through the pipeline, then sequentially passes through the three bin bodies for degradation such as spraying, contact oxidation, adsorption, biological trickling filtration and the like, and is discharged through the air guide channel 4 of the last bin body.
Furthermore, the positions of the air guide channels 4 on the bin body 1 are one high and one low, one air guide channel is higher than the position of the upper air distribution plate 2, the other air guide channel is lower than the position of the lower air distribution plate 2, the organic waste gas enters the bin body 1 through the air guide channel lower than the position of the lower air distribution plate 2, the flow tracks of the organic waste gas in the three bin bodies 1 are S-shaped, and a low-in and high-out state is formed.
In order to effectively monitor data, VOCs monitors are respectively arranged at the inlet of organic waste gas entering a first bin body and the air guide channels of two bin bodies, VOCs outlets of the organic waste gas are respectively provided, the monitored organic waste gas data are respectively marked as VOCs1, VOCs2, VOCs3 and VOCs4, an air quantity and air pressure monitor is arranged at the inlet of the organic waste gas entering the first bin body to monitor air quantity and air pressure, a pH meter, an ORP meter, an acid-base dosing pump and an oxidant dosing pump are arranged on a circulating water tank and are used for monitoring the pH value and the ORP value of nutrient solution, an air draft fan is connected at the air guide channel of the last bin body for discharging the organic waste gas, the air draft fan is regulated and controlled by a fan frequency converter, a three-bin type organic waste gas treatment device is provided with an intelligent control box, the intelligent control box collects and processes the monitored data, and then regulates and controls and connects an electric valve, a circulating pump, an acid-base dosing, the air quantity and air pressure monitor monitors numerical feedback signals to control a fan frequency converter, an ORP meter feedback signal to control an oxidant dosing pump, and a pH meter feedback signal to control an acid-base dosing pump.
The method is divided into three types through standard control programs adopted by an intelligent control box: a low concentration organic waste gas control program, a medium concentration organic waste gas control program and a high concentration organic waste gas control program.
The low-concentration organic waste gas control program is suitable for organic waste gas with the total VOCs content of less than 500mg/m, the program can be manually selected, after the program is selected, the system is controlled by an intelligent control system control mode according to feedback data, the automatic operation is realized, and the process is adjusted. The program can also automatically select by detecting the concentration of the imported VOCs, and automatically run under the control of an intelligent control system control mode according to feedback data.
The principle of the control mode of the intelligent control system is as follows:
1. setting monitoring parameters: air volume, air pressure, VOCs1, VOCs2, VOCs3, VOCs4, ORP value and pH value. The control mode is as follows: 1. the wind pressure value is controlled to be-10 Pa under the standard atmospheric pressure, and the feedback signal controls the fan frequency converter; 2. controlling the ORP value in the circulating water tank to be 200-400, and feeding back a signal to control the oxidant dosing pump; 3. and controlling the pH value to be 7-9 in a standard mode, and feeding back a signal to control the acid-base dosing pump.
2. Starting the equipment: after the device is started, the device automatically records time, and the running time is 120 hours based on the actual running time. At this stage, the electric valve 1, the electric valve 2 and the electric valve 3 are all opened, domesticated microbial strains in the cabin body are rapidly propagated and grown under the supplement of nutrient solution, the wind pressure is controlled to be-10 Pa in standard atmosphere, and the pH value is controlled to be 7-9 in a standard mode.
3. A debugging stage: after the equipment starting stage is completed, the equipment debugging stage is started, the parameters are automatically selected or manually input according to VOCs1 by taking (VOCs3-VOCs 4)/VOCs 3 as the standard, the electric valve 1 and the electric valve 2 are opened in the stage, the electric valve 3 is closed, the ORP value is controlled between 300 and 400, the oxidation effect is ensured, meanwhile, the ORP value is also controlled by (VOCs1-VOCs3)/VOCs1, and the ORP value is also automatically selected or manually input according to VOCs 1.
4. And (3) a stabilization stage: when the content of (VOCs3-VOCs 4)/VOCs 3 reaches 50-60%, indicating that the debugging stage is finished, entering a stable stage, taking (VOCs2-VOCs 3)/VOCs 2 as a standard, automatically selecting or manually inputting the parameters according to VOCs1, opening the electric valve 1 at the stage, closing the electric valve 2 and the electric valve 3, controlling the ORP between 200-300 at the same time, ensuring the oxidation effect, controlling the ORP value by (VOCs1-VOCs 2)/VOCs 1, and automatically selecting or manually inputting the ORP value according to VOCs 1.
5. And (3) a normal operation stage: when the (VOCs2-VOCs 3)/VOCs 2 reaches 80-90%, the stabilization phase is predicted to be finished, the normal operation phase is started, the electric valve 1, the electric valve 2 and the electric valve 3 are all closed in the phase, the circulating water pump is closed, the operation of the exhaust fan is regulated and controlled only through the monitoring value of the wind pressure, and the exhaust effect is guaranteed.
The control mode of the intelligent control system of the medium-concentration organic waste gas control program and the high-concentration organic waste gas control program is the same as that of the low-concentration organic waste gas control program, and the difference is that the control values of ORP values of three cabin bodies under different concentrations are different, and the control values are shown in the following table:
when the ORP values of the three bin bodies are not at the set value, nutrient solution in the circulating water tank is regulated and controlled by the circulating pump to be lifted to the water distributor to regulate the ORP values in the bin bodies.
When the air volume changes sharply or the change range of the processing efficiency (removal rate) of each stage is large, the system enters an adjustment state to correct, and the system is divided into the following three states according to the change range:
| status of state | General changes | Large variation | Malignant transformation |
| Range of variation | 0~10% | 10~20% | Over 20 percent |
| Program default entry phase | Stage of normal operation | Stabilization phase | Debugging phase |
The pretreatment process of the method is mainly based on physical oxidation and is assisted by biological oxidation, biological bacterial colonies are formed along with the process, the biological oxidation effect achieves a certain effect, and then the process parameters are adjusted to the biological oxidation position and the physical oxidation is assisted; finally, the equipment is close to biological oxidation, and the processing capacity meets the requirement.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention; any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. An intelligent control method based on three-bin organic waste gas treatment equipment is characterized in that: the method comprises the following steps:
installing equipment: three-chamber organic waste gas treatment equipment is arranged, three chambers are transversely arranged, an upper air distribution plate and a lower air distribution plate are arranged in each chamber, biological filler which is beneficial to microbial strain adsorption is filled between the two air distribution plates, a water distributor is arranged at the upper part of the upper air distribution plate, an electric valve for controlling flow is arranged at the water inlet end of the water distributor, the electric valves are sequentially marked as an electric valve 1, an electric valve 2 and an electric valve 3 according to the path of organic waste gas flowing through the three chambers, a diversion trench is formed at the bottom of each chamber and used for receiving sprayed nutrient solution, the nutrient solution is collected into a circulating water tank and is connected with the electric valve through a circulating pump and a pipeline, air guide channels are communicated between the adjacent chambers, the positions of the air guide channels on the chambers are high and low, one air guide channel is higher than the position of the upper air distribution plate, and the other air guide channel is lower than the position of the, organic waste gas enters the bin bodies through the air guide channels lower than the lower air distribution plate, the flow tracks of the organic waste gas in the three bin bodies are S-shaped, a low-in and high-out state is formed, the organic waste gas enters the first bin body through the pipeline, then sequentially passes through the three bin bodies to be subjected to spraying, contact oxidation, adsorption and biological trickling filtration process degradation, and is discharged through the air guide channels of the last bin body;
data monitoring: the entrance of organic waste gas entering the first bin body, the air induction channels of the two bin bodies, the exit of the organic waste gas are respectively provided with a VOCs monitor, the monitored data of the organic waste gas are respectively marked as VOCs1, VOCs2, VOCs3 and VOCs4, the entrance of the organic waste gas entering the first bin body is provided with an air volume and pressure monitor for monitoring the air volume and the air pressure, a circulating water tank is provided with a pH meter, an ORP meter, an acid-base dosing pump and an oxidant dosing pump, the pH meter and the ORP meter are used for monitoring the pH value and the ORP value of nutrient solution, the air induction channel of the organic waste gas discharged from the last bin body is connected with an air draft fan, the air draft fan is regulated and controlled by a fan frequency converter, the three-bin type organic waste gas treatment equipment is provided with an intelligent control box, the intelligent control box collects and processes the monitoring data, and regulates and controls and connects an electric valve, a circulating pump, an, the air quantity and air pressure monitor monitors numerical feedback signals to control a fan frequency converter, an ORP meter feeds back signals to control an oxidant dosing pump, and a pH meter feeds back signals to control an acid-base dosing pump;
starting the equipment: after starting the device, automatically recording time by the device, wherein the actual operation time is taken as the standard, the operation time is 120 hours, at this stage, all the electric valves 1, 2 and 3 are opened, domesticated microbial strains in the cabin body are rapidly propagated and grown under the supplement of nutrient solution, the air pressure is controlled to be-10 Pa under the standard atmospheric pressure, and the pH value standard mode is controlled to be 7-9;
a debugging stage: after the equipment starting stage is finished, entering an equipment debugging stage, taking (VOCs3-VOCs 4)/VOCs 3 as reference, automatically selecting or manually inputting the parameters according to VOCs1, opening the electric valve 1 and the electric valve 2 in the stage, closing the electric valve 3, controlling the ORP value to be 300-400, ensuring the oxidation effect, controlling the ORP value by (VOCs1-VOCs3)/VOCs1, and automatically selecting or manually inputting the ORP value according to VOCs 1;
and (3) a stabilization stage: when (VOCs3-VOCs 4)/VOCs 3 reach a certain value, indicating that the debugging stage is finished, entering a stable stage, taking (VOCs2-VOCs 3)/VOCs 2 as a standard, automatically selecting or manually inputting the parameters according to VOCs1, opening the electric valve 1, closing the electric valve 2 and the electric valve 3 at the stage, controlling ORP between 200 and 300 to ensure the oxidation effect, controlling the ORP value by (VOCs1-VOCs 2)/VOCs 1, and automatically selecting or manually inputting the ORP value according to VOCs 1;
and (3) a normal operation stage: when (VOCs2-VOCs 3)/VOCs 2 reach a certain value, the stabilization stage is predicted to be finished, the normal operation stage is started, the electric valve 1, the electric valve 2 and the electric valve 3 are all closed in the stage, the circulating water pump is closed, the operation of the exhaust fan is regulated and controlled only through the monitoring value of the wind pressure, and the exhaust effect is guaranteed.
2. The intelligent control method based on the three-chamber organic waste gas treatment equipment according to claim 1, characterized in that: an ORP meter is respectively arranged on the three cabin bodies, monitoring data of organic waste gas entering the inlet of the first cabin body, namely VOCs1, is divided into three data sections, namely low concentration: and (3) carrying out downward cultivation at a concentration of less than 500 mg/m: 500-1000mg/m and high concentration: more than 1000mg/m, during thin film cultivation, when VOCs1 is under less than 500mg/m, ORP values of the three bin bodies are sequentially controlled at 800, 600 according to the air flow direction, during thin film cultivation, when VOCs1 is under 500 thin film cultivation, ORP values of the three bin bodies are sequentially controlled at 900, 700, 600 according to the air flow direction, during thin film cultivation, when VOCs1 is under more than 1000mg/m, ORP values of the three bin bodies are sequentially controlled at 900, 800, 600 according to the air flow direction.
3. The intelligent control method based on the three-chamber organic waste gas treatment equipment according to claim 2, characterized in that: in the stable stage, the value range of (VOCs3-VOCs 4)/VOCs 3 is 50-60%, and in the normal operation stage (VOCs2-VOCs 3)/VOCs 2 is 80-90%.
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| CN111773917A (en) * | 2020-07-17 | 2020-10-16 | 广东中微环保生物科技有限公司 | Nutrient solution automatic compensation system for waste gas biological treatment device |
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| JPH0316617A (en) * | 1989-06-13 | 1991-01-24 | Daikin Ind Ltd | Air cleaner |
| JPH11128648A (en) * | 1997-11-04 | 1999-05-18 | Matsushita Electric Ind Co Ltd | Air purifying device |
| US20050196330A1 (en) * | 2004-03-05 | 2005-09-08 | Ronald Garnett | Abatement device |
| CN2768882Y (en) * | 2004-11-16 | 2006-04-05 | 天津创业环保股份有限公司 | Boilogical trickling filtering device for treating foul smell |
| CN204166470U (en) * | 2014-10-29 | 2015-02-18 | 杭芝机电有限公司 | A kind of have air-cleaning function and make PC stabilize the servicing unit of operation |
| CN204865333U (en) * | 2015-06-11 | 2015-12-16 | 深圳市丰绿环保科技有限公司 | Dust -laden organic waste gas dry -type purifier |
| CN205019951U (en) * | 2015-09-23 | 2016-02-10 | 广州市新之地环保产业有限公司 | Modular biological deodorization equipment |
| CN206549402U (en) * | 2017-03-15 | 2017-10-13 | 汤原县海瑞特工程塑料有限公司 | A kind of collection of diphenyl sulphone (DPS) sublimate and retracting device |
| CN207365233U (en) * | 2017-10-10 | 2018-05-15 | 适家（北京）科技有限公司 | A kind of more air purifiers |
| CN107824041A (en) * | 2017-12-11 | 2018-03-23 | 黑龙江省能源环境研究院 | A kind of bio-trickling filter of the variable up-hole plate anti-rollover of packing volume |
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