CN202929506U - High density ammonia nitrogen waste water stripping treatment automatic control system - Google Patents
High density ammonia nitrogen waste water stripping treatment automatic control system Download PDFInfo
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- CN202929506U CN202929506U CN 201220602604 CN201220602604U CN202929506U CN 202929506 U CN202929506 U CN 202929506U CN 201220602604 CN201220602604 CN 201220602604 CN 201220602604 U CN201220602604 U CN 201220602604U CN 202929506 U CN202929506 U CN 202929506U
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- stripping tower
- control valve
- electric control
- ammonia nitrogen
- waste water
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Abstract
The utility model relates to a high density ammonia nitrogen waste water stripping processing automatic control system, comprising a stripper and a remote terminal control system. A waste water entry of the stripper is provided with an on-line pH meter; an alkaline pipeline at the waste water entry is provided with a first electric control valve. The remote terminal control system is employed to control the stripper. Compared with prior arts, the high density ammonia nitrogen waste water stripping treatment automatic control system employs the remote terminal control system as a basis, can perform automatic control on ammonia nitrogen waste water stripping processing processes, keeps temperature and pressure of the tripper constant, speeds up process response speed, reduces process operation fluctuation, avoids discharge of defective waste water and raises security of processing processes.
Description
Technical field
The utility model relates to the ammonia nitrogenous wastewater treatment technology field, particularly relates to the automatic control system that a kind of high-concentration ammonia nitrogenous wastewater stripping is processed.
Background technology
Ammonia nitrogen is one of pollutant main in China's water body, and its harm is can eutrophication, causes the deterioration of ecologic environment.Ammonia nitrogen pollutant in ammonia nitrogen waste water is present in waste water with ammonium root, free state amino molecule form, and the disposal route of having reported mainly comprises biochemical process and physico-chemical process.CN 1380260A discloses a kind of method that bioanalysis is processed the chemical fertilizer ammonia nitrogen waste water, by biological nitration, anti-nitration reaction, ammonia nitrogen waste water is processed to first discharge standard; CN 101229944A discloses a kind of method that bioanalysis is processed ammonia nitrogen waste water, adopts anaerobism-anoxic-aerobic combination PROCESS FOR TREATMENT ammonia nitrogen waste water.
The normal high-concentration ammonia nitrogenous wastewater that produces in chemical industry and hydrometallurgy process, more than its ammonia nitrogen concentration can reach 1000mg/L, the salt or the heavy metal that wherein often contain high concentration, for this type of waste water, normal employing vaporizing extract process removes ammonia nitrogen wherein, and CN 101161596A and CN 101525189A report this disposal route.Stripping process is a dynamic equilibrium process, wherein comprise for several times to tens of gas-liquid equilibrium processes, yet the variation of the water quality of waste water, the pressure of steam and environment temperature all may impact system, needs operating personnel to regulate at any time, to guarantee the stable of stripping process.In case because negligence of operation causes fluctuation, can cause system balancing destroyed, need the experience long period could recover normally, it is not up to standard that this will directly cause ammonia nitrogen waste water to be processed, and have risk of environmental pollution.Therefore, need a kind of reliable automatic control system that stripping process is controlled.
The utility model content
The purpose of this utility model is to provide a kind of automatic control system for high-concentration ammonia nitrogenous wastewater stripping processing procedure.
For reaching this purpose, the utility model by the following technical solutions:
The automatic control system that a kind of high-concentration ammonia nitrogenous wastewater stripping is processed, described system comprises stripping tower and remote terminal control system; Waterwater entrance at described stripping tower is installed online pH meter, in adding of waterwater entrance, the first electric control valve is installed on the alkali pipeline.When online pH meter shows that the pH of stripping tower waterwater entrance is too low or when too high, the remote terminal control system can be controlled the aperture that adds the first electric control valve on the alkali pipeline, changes to add alkali number, thereby controls the wastewater pH that enters stripping tower.The utility model can be realized the real-time control to entry pH value by online pH meter and the setting that adds electric control valve on the alkali pipeline.
The basic structure of stripping tower described in the utility model, design as waste water import and export, steam inlet, overhead condenser, return tank etc. can be known from prior art by those skilled in the art, specifically can process stripping tower with reference to disclosed ammonia nitrogen waste water in CN202430030U.
It is below preferred form of the present utility model.
At the top and bottom of stripping tower, the first pressure transducer and the second pressure transducer are installed respectively; Mounting safety valve in the non-condensable gas outlet of described stripping tower overhead condenser.When the tower top pressure of stripping tower was excessive, the non-condensable gas of overhead condenser outlet safety valve was opened automatically, and the control tower pressure on top surface is in normal range.The second pressure transducer of stripping tower bottom is not participated in control directly, is the normal indication parameter of judgement stripping tower internal circulation, when this pressure shows greater than 0.2MPa, should automatically cut off steam, close the ammonia nitrogen waste water intake pump.
At the top and bottom of described stripping tower, the first temperature sensor and the second temperature sensor are installed respectively; Low-pressure steam import installation the second electric control valve in the stripping tower bottom is installed the 3rd electric control valve on the recirculated cooling water inlet pipeline of stripping tower overhead condenser.When too low or column bottom temperature does not meet technological requirement when the tower top temperature of stripping tower, automatically control the second motorized adjustment valve opening of stripping tower low-pressure steam import, controlling steam flow, thereby reach the purpose of controlling column bottom temperature.Because the second electric control valve of low-pressure steam inflow point can be controlled steam flow, this is unique thermal source of stripping tower, is no matter therefore tower top or column bottom temperature when too low, all should open large this electrically operated valve; If column bottom temperature is too high, should reduce this valve opening; If tower top temperature is too high, should increase cooling water flow.When the tower top temperature of stripping tower is too high or too low, automatically control cooling water inlet the 3rd motorized adjustment valve opening of overhead condenser, thereby control cooling water flow, to control condenser phegma temperature, reach the purpose of regulating tower top temperature.
At the bottom of described stripping tower liquid outlet, the ammonia nitrogen in-line analyzer is installed; Described ammonia nitrogen in-line analyzer is connected with threeway, and the 4th electric control valve and the 5th electric control valve are installed respectively in two outlets of described threeway.When at the bottom of the stripping tower tower, the fluid ammonia nitrogen concentration is up to standard, automatically open the 4th electric control valve gone on the qualified discharge pipeline, close the 5th electric control valve of going to accident pool, qualified water is effluxed; When the ammonia nitrogen concentration of fluid at the bottom of the stripping tower tower is not up to standard, automatically open the 5th electric control valve gone on the accident pool pipeline, close the 4th electric control valve of going to the qualified discharge pipeline, make waste water not up to standard flow into accident pool.
The automatic control system that the most preferred a kind of high-concentration ammonia nitrogenous wastewater stripping of the utility model is processed comprises stripping tower and remote terminal control system; Waterwater entrance at described stripping tower is installed online pH meter, in adding of waterwater entrance, the first electric control valve is installed on the alkali pipeline; At the top and bottom of stripping tower, the first pressure transducer and the second pressure transducer are installed respectively, mounting safety valve in the non-condensable gas outlet of described stripping tower overhead condenser; At the top and bottom of described stripping tower, the first temperature sensor and the second temperature sensor are installed respectively, low-pressure steam import installation the second electric control valve in the stripping tower bottom is installed the 3rd electric control valve on the recirculated cooling water inlet pipeline of stripping tower overhead condenser; At the bottom of described stripping tower liquid outlet, the ammonia nitrogen in-line analyzer is installed, described ammonia nitrogen in-line analyzer is connected with threeway, and the 4th electric control valve and the 5th electric control valve are installed respectively in two outlets of described threeway.Described the 4th electric control valve connects the qualified discharge pipeline, and the 5th electric control valve connects the accident pool pipeline.
Remote terminal control system described in the utility model, its English full name are Remote Terminal Unit, and its English is referred to as RTU, can be in temperature-20 ~ 90 ℃ normal operation, and possess simultaneously monitoring and control function.
Concrete control method is as follows:
1) at first set the sampling period of online pH meter, temperature sensor, pressure transducer and ammonia nitrogen in-line analyzer;
2) set at the bottom of tower wastewater pH, column bottom temperature, tower top temperature, tower top pressure, tower the technological parameter such as draining ammonia nitrogen concentration;
3) after ammonia nitrogen waste water mixes by line mixer with alkaline solution, use online pH meter monitoring pH, be failure to actuate during in setting value as pH, control the first motorized adjustment valve opening that adds on the alkali pipeline during less than setting value increases as pH, controls the first motorized adjustment valve opening that adds on the alkali pipeline as pH during greater than setting value and reduces;
4) after stripping tower passes into steam, use the second temperature sensor measurement column bottom temperature, be failure to actuate during in setting value when temperature, the second motorized adjustment valve opening of controlling during less than setting value when temperature on the low pressure steam pipe road increases, and the second motorized adjustment valve opening of controlling during greater than setting value when temperature on the low pressure steam pipe road reduces;
5) after stripping tower passes into steam, use the first pressure transducer to measure tower top pressure, when pressure is failure to actuate, open safety valve (PSV) when pressure during greater than setting value when setting value is following, safety valve is autoshutdown after pressure drops to below setting value;
6) use the first temperature sensor monitors tower top temperature, when being setting value, temperature is failure to actuate, the 3rd motorized adjustment valve opening of controlling during greater than setting value on the circulating water intake pipeline when temperature increases, and the electrically operated valve aperture of controlling on the circulating water intake pipeline during less than setting value when temperature reduces;
7) use the ammonia nitrogen concentration of discharging water at the bottom of ammonia nitrogen in-line analyzer monitoring tower,, open the 4th electric control valve on the qualified discharge pipeline, close the 5th electric control valve of going on the accident pool pipeline when setting value is following when ammonia nitrogen concentration; When ammonia nitrogen concentration during greater than setting value, open the 5th electric control valve gone on the accident pool pipeline, close the 4th electric control valve on the qualified discharge pipeline.
Compare with the prior art scheme, the utlity model has following beneficial effect:
The utility model is take the remote terminal control system as the basis, can automatically control ammonia nitrogen waste water stripping processing procedure, make temperature, the pressure of pH value of waste water, stripping tower keep constant, accelerated the technique response speed, reduced the fluctuation of technological operation, avoid defective waste water to efflux, improved the security for the treatment of process.
Description of drawings
Fig. 1 is high-concentration ammonia nitrogenous wastewater stripping processing procedure control system structural drawing described in the utility model.
In figure: the 1-stripping tower; The online pH meter of 2-; 3-the first electric control valve; 4-the first pressure transducer; The 5-overhead condenser; The 6-safety valve; 7-the second electric control valve; 8-the 3rd electric control valve; 9-ammonia nitrogen in-line analyzer; 10-the 4th electric control valve; 11-the 5th electric control valve; 12-the first temperature sensor; 13-the second temperature sensor; 14-the second pressure transducer.
The below further describes the utility model.But following example is only simple and easy example of the present utility model, does not represent or limits rights protection scope of the present utility model, and interest field of the present utility model is as the criterion with claims.
Embodiment
For the utility model is described better, be convenient to understand the technical solution of the utility model, typical but non-limiting embodiment of the present utility model is as follows:
See Fig. 1, the automatic control system that a kind of high-concentration ammonia nitrogenous wastewater stripping is processed, its composition comprises signal collecting device, actuating equipment and three parts of control loop.Described signal collecting device comprise temperature sensor (with
The expression), pressure transducer (with
Expression), online pH meter (with
Represent) and the ammonia nitrogen in-line analyzer (with
Expression); Described actuating equipment refers to electrically operated valve, operated pneumatic valve or pressure control valve;
Described control loop refers to that the technological parameter that the data measured by signal collecting device and high-concentration ammonia nitrogenous wastewater stripping are processed controls corresponding valve.
Concrete structure is as follows:
The automatic control system that a kind of high-concentration ammonia nitrogenous wastewater stripping is processed, described system comprises stripping tower 1 and remote terminal control system; Waterwater entrance at described stripping tower 1 is installed online pH meter 2, in adding of waterwater entrance, the first electric control valve 3 is installed on the alkali pipeline; At the top and bottom of stripping tower 1, the first pressure transducer 4 and the second pressure transducer 14 are installed respectively; Mounting safety valve 6 in the non-condensable gas outlet of described stripping tower 1 overhead condenser 5; At the top and bottom of described stripping tower 1, the first temperature sensor 12 and the second temperature sensor 13 are installed respectively; Low-pressure steam import installation the second electric control valve 7 in stripping tower 1 bottom is installed the 3rd electric control valve 8 on the recirculated cooling water inlet pipeline of stripping tower 1 overhead condenser 5; At the bottom of described stripping tower 1 liquid outlet, ammonia nitrogen in-line analyzer 9 is installed; Described ammonia nitrogen in-line analyzer 9 is connected with threeway, and the 4th electric control valve 10 and the 5th electric control valve 11 are installed respectively in two outlets of described threeway.
Specific embodiment:
Adopt the concrete control step of the automatic control system of the utility model high-concentration ammonia nitrogenous wastewater stripping processing to be:
1) sampling period of setting pH, temperature, pressure is 5s, and the ammonia nitrogen in-line analyzer sampling period is 5min;
2) the setting technological parameter is as follows: advancing the tower wastewater pH is 11, and column bottom temperature is 103 ℃, and tower top temperature is 93 ℃, and tower top pressure is 20kPa, and at the bottom of tower, the draining ammonia nitrogen concentration is 15mg/L, and the total data permissible error is ± 1%;
2) after ammonia nitrogen waste water mixes by line mixer with NaOH solution, use online pH meter monitoring pH, be failure to actuate 11 the time as pH, the first motorized adjustment valve opening of controlling on the NaOH pipeline when pH＜11 increases, and the first motorized adjustment valve opening of controlling on the NaOH pipeline when pH＞11 reduces;
3) after stripping tower passes into steam, use the second temperature sensor measurement column bottom temperature, be failure to actuate during at 103 ℃ when temperature, the second motorized adjustment valve opening of controlling when temperature＜103 ℃ on the low pressure steam pipe road increases, and the second motorized adjustment valve opening of controlling when temperature＞103 ℃ on the low pressure steam pipe road reduces;
4) after stripping tower passes into steam, use the first pressure transducer to measure tower top pressure, be failure to actuate when pressure≤20kPa, open safety valve (PSV) when pressure＞20kPa, safety valve is autoshutdown after pressure＜20kPa;
5) use the first temperature sensor monitors tower top temperature, when equaling 93 ℃, temperature is failure to actuate, the 3rd motorized adjustment valve opening of controlling when temperature＞93 ℃ on the circulating water intake pipeline increases, and the 3rd motorized adjustment valve opening of controlling on the circulating water intake pipeline when temperature＜93 ℃ reduces;
6) use the ammonia nitrogen concentration of discharging water at the bottom of ammonia nitrogen in-line analyzer monitoring tower, when ammonia nitrogen concentration≤15mg/L, open the 4th electric control valve on the qualified discharge pipeline, close the 5th electric control valve of going on the accident pool pipeline; When ammonia nitrogen concentration＞15mg/L, open the 5th electric control valve gone on the accident pool pipeline, close the 4th electric control valve on the qualified discharge pipeline.
Applicant's statement, the utility model illustrates detailed construction feature of the present utility model and control method by above-described embodiment, but the utility model is not limited to above-mentioned detailed construction feature and control method, does not mean that namely the utility model must rely on above-mentioned detailed construction feature and control method could be implemented.The person of ordinary skill in the field should understand; to any improvement of the present utility model; to the increase of the equivalence replacement of the selected parts of the utility model and accessory, the selection of concrete mode etc., within all dropping on protection domain of the present utility model and open scope.
Claims (5)
1. the automatic control system that the high-concentration ammonia nitrogenous wastewater stripping is processed, is characterized in that, described system comprises stripping tower (1) and remote terminal control system; Waterwater entrance at described stripping tower (1) is installed online pH meter (2), in adding of waterwater entrance, the first electric control valve (3) is installed on the alkali pipeline.
2. the system as claimed in claim 1, is characterized in that, at the top and bottom of stripping tower (1), the first pressure transducer (4) and the second pressure transducer (14) is installed respectively; The upper mounting safety valve (6) of non-condensable gas outlet at described stripping tower (1) overhead condenser (5).
3. system as claimed in claim 1 or 2, is characterized in that, at the top and bottom of described stripping tower (1), the first temperature sensor (12) and the second temperature sensor (13) is installed respectively; Low-pressure steam import installation the second electric control valve (7) in stripping tower (1) bottom is installed the 3rd electric control valve (8) on the recirculated cooling water inlet pipeline of stripping tower (1) overhead condenser (5).
4. system as claimed in claim 3, is characterized in that, at the bottom of described stripping tower (1) liquid outlet, ammonia nitrogen in-line analyzer (9) is installed; Described ammonia nitrogen in-line analyzer (9) is connected with threeway, and the 4th electric control valve (10) and the 5th electric control valve (11) are installed respectively in two outlets of described threeway.
5. the system as claimed in claim 1, is characterized in that, described system comprises stripping tower (1) and remote terminal control system;
Waterwater entrance at described stripping tower (1) is installed online pH meter (2), in adding of waterwater entrance, the first electric control valve (3) is installed on the alkali pipeline;
At the top and bottom of stripping tower (1), the first pressure transducer (4) and the second pressure transducer (14) are installed respectively; The upper mounting safety valve (6) of non-condensable gas outlet at described stripping tower (1) overhead condenser (5);
At the top and bottom of described stripping tower (1), the first temperature sensor (12) and the second temperature sensor (13) are installed respectively; Low-pressure steam import installation the second electric control valve (7) in stripping tower (1) bottom is installed the 3rd electric control valve (8) on the recirculated cooling water inlet pipeline of stripping tower (1) overhead condenser (5);
At the bottom of described stripping tower (1) liquid outlet, ammonia nitrogen in-line analyzer (9) is installed; Described ammonia nitrogen in-line analyzer (9) is connected with threeway, and the 4th electric control valve (10) and the 5th electric control valve (11) are installed respectively in two outlets of described threeway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220602604 CN202929506U (en) | 2012-11-14 | 2012-11-14 | High density ammonia nitrogen waste water stripping treatment automatic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220602604 CN202929506U (en) | 2012-11-14 | 2012-11-14 | High density ammonia nitrogen waste water stripping treatment automatic control system |
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| CN202929506U true CN202929506U (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220602604 Expired - Lifetime CN202929506U (en) | 2012-11-14 | 2012-11-14 | High density ammonia nitrogen waste water stripping treatment automatic control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104860464A (en) * | 2015-05-22 | 2015-08-26 | 江西明兴环境工程有限公司 | Energy-saving ammonia-nitrogen wastewater treatment method and device |
| CN106277146A (en) * | 2016-09-09 | 2017-01-04 | 深圳市源禹环保科技有限公司 | The stripper temperature control method that a kind of ammonia reclaims |
| CN114873679A (en) * | 2021-02-05 | 2022-08-09 | 陕西青朗万城环保科技有限公司 | Industrial waste stripping treatment method and control system thereof |
-
2012
- 2012-11-14 CN CN 201220602604 patent/CN202929506U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104860464A (en) * | 2015-05-22 | 2015-08-26 | 江西明兴环境工程有限公司 | Energy-saving ammonia-nitrogen wastewater treatment method and device |
| CN104860464B (en) * | 2015-05-22 | 2017-05-03 | 江西耐可化工设备填料有限公司 | Energy-saving ammonia-nitrogen wastewater treatment method and device |
| CN106277146A (en) * | 2016-09-09 | 2017-01-04 | 深圳市源禹环保科技有限公司 | The stripper temperature control method that a kind of ammonia reclaims |
| CN114873679A (en) * | 2021-02-05 | 2022-08-09 | 陕西青朗万城环保科技有限公司 | Industrial waste stripping treatment method and control system thereof |
| CN114873679B (en) * | 2021-02-05 | 2023-10-27 | 陕西青朗万城环保科技有限公司 | Industrial waste stripping treatment method and control system thereof |
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Granted publication date: 20130508 |
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| CX01 | Expiry of patent term |