CN101493471A - Water sample on-line monitoring and overproof sample holding apparatus and operation method thereof - Google Patents
Water sample on-line monitoring and overproof sample holding apparatus and operation method thereof Download PDFInfo
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- CN101493471A CN101493471A CN 200810033097 CN200810033097A CN101493471A CN 101493471 A CN101493471 A CN 101493471A CN 200810033097 CN200810033097 CN 200810033097 CN 200810033097 A CN200810033097 A CN 200810033097A CN 101493471 A CN101493471 A CN 101493471A
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Abstract
The invention discloses a water sample online monitoring and testing-overproof sample-remaining device, comprising a programmable controller (55), a PH device (52), an equal proportion sampling instrument (51), a PH sample-remaining tool (31) and a multi-parameter sample-remaining tool (32), wherein the PH sample-remaining tool is connected to the PH device (52), and the multi-parameter sample-remaining tool is connected to a measurement instrument; the PH sample-remaining tool and the multi-parameter sample-remaining tool are respectively connected to a water supply pipe (41) by a pump and a solenoid valve or three-way solenoid valve, and respectively connected with the equal proportion sampling instrument by a sampling pipe, and also respectively pass through the solenoid valve and a water sample outlet pipe. The programmable controller controls the inlet and outlet, measurement and sample-remaining operation of the water sample. The invention can simultaneously achieve the real-time monitoring and overproof sample-remaining operation of PH and other parameters with a certain measurement period; the collected overproof water sample has no time difference, good accuracy, and representativeness of real-time water sample, and can conduct continuous and accurate monitoring and overproof sample-remaining operation.
Description
Technical field
The present invention relates to a kind of environmental monitoring system, specifically is the water sample on-line monitoring and device and the using method thereof of keeping sample that exceed standard.
Background technology
In the existing water quality monitoring, need measure multiple index simultaneously, except pH value, also have COD, ammonia nitrogen, total phosphorus etc., the instrument of employing has PH meter, COD instrument, nh 3-n analyser and total phosphorus analyser etc.These instruments are controlled by central data processing system, every index in the analysis water-like, and keep sample for the water sample collection of superscalar data, so that carry out further assay determination.
The analytical cycle of these data such as COD, ammonia nitrogen, total phosphorus is long, generally needs more than 40 minutes, if find to exceed standard, in the time of will keeping sample operation again, the water sample of being measured has flowed out, and can't gather again; Even gathered and had very large time difference yet, collected water sample has not been original sample of measuring.
PH value generally can be implemented in the line The real time measure, can collect water sample immediately in case find superscalar data, but also has sampling time difference problem, and only the time difference is less.
In real work, need a kind of device, can be simultaneously other multiple parameters such as pH value and COD, ammonia nitrogen, total phosphorus be monitored, and get over jet lag, the operation that keeps sample accurately can exceed standard.
Summary of the invention
The object of the present invention is to provide a kind of water sample on-line monitoring and overproof sample holding apparatus, can overcome the time difference problem that exists in the prior art, the operation that keeps sample accurately exceeds standard.
Another object of the present invention is to provide the method for operating of this water sample on-line monitoring and overproof sample holding apparatus.
A kind of water sample on-line monitoring and overproof sample holding apparatus, comprise programmable controller (PLC) 55, PH meter 52, equal proportion sampling instrument 51, determining instrument, also comprise water sample water inlet pipe 41, water sample rising pipe 42, PH pond 31 and the multiparameter pond 32 that keeps sample that keeps sample, PH meter detection probe is connected to the PH pond that keeps sample, the detection probe of determining instrument is connected to the multiparameter pond that keeps sample, and determining instrument comprises such as COD analyzer, ammonia nitrogen-total phosphorus determination instrument etc.
Water sample water inlet pipe 41 is connected to the PH pond 31 that keeps sample by water-supply-pipe 43, and water-supply-pipe upper edge water (flow) direction sets gradually solenoid valve 11 and water pump 21; Multiparameter keeps sample and is connected with drainpipe 45 between pond and the water sample rising pipe, and drainpipe is provided with solenoid valve 12;
The water sample water inlet pipe is connected to the multiparameter pond that keeps sample by water-supply-pipe 46, and water-supply-pipe upper edge water (flow) direction sets gradually solenoid valve 13 and water pump 23; Multiparameter keeps sample and is connected with drainpipe 47 between pond and the water sample rising pipe, and drainpipe is provided with solenoid valve 14.
The equal proportion sampling instrument is connected to three-way solenoid valve 15, and the other two ends of three-way solenoid valve are connected to PH pond and the multiparameter pond that keeps sample that keeps sample by sampling pipe 48,49 respectively.
Programmable controller is connected respectively to determining instrument, PH meter, equal proportion sampling instrument by the serial communication data line.
Programmable controller is connected respectively to solenoid valve 12,13,14, three- way solenoid valve 17,15 and water pump 21,22,23 by signal translating system.
Programmable controller can also be connected with display screen with monitoring host computer respectively.
Water sample because PH keeps sample in the pond is uninterrupted supply, can cause than lossy water pump, therefore can adopt two water pumps to realize PH sampling double-loop pump, its structure is: the water sample water inlet pipe is connected to a three-way solenoid valve 17, the two ends in addition of this three-way solenoid valve connect the water-supply- pipe 43,44 and the water pump 21,22 of two groups of parallel connections respectively, above-mentioned two groups of water-supply-pipes and water pump and the PH pond that keeps sample is connected PH and keeps sample and be connected with drainpipe 45 between pond and the water sample rising pipe, and drainpipe is provided with solenoid valve 12.One of them water pump can be used as stand-by pump, if having one to break down in the water pump 21,22, programmable controller can start another one, and system normally moves with assurance.In addition, original water pump of opening need cut out after PH exceeded standard, stop to carry water sample so that keep sample operation, may produce lagging influence like this, can utilize two water pumps can carry out blocked operation, as: switch off the pump 21, finish PH and keep sample and can open water pump 22 immediately and carry out next step operation after the operation.
The method of operating of this water sample on-line monitoring and overproof sample holding apparatus is that programmable controller is carried out following operation:
A) the PH step that keeps sample that exceeds standard:
1) sends instruction unpack three-way solenoid valve 17 or solenoid valve 11, open water pump 21 or water pump 22, make water sample enter the PH pond that keeps sample;
2) read the PH data from the PH meter,
3) judge whether the PH data exceed standard, if do not exceed standard, then execution in step 2), if exceed standard then execution in step 4);
4) PH superscalar data sends the PH control signal that exceeds standard, and closes solenoid valve 12, close water pump 21 or the water pump 22 opened in institute's step 1), switch three-way solenoid valve 15, the equal proportion sampling instrument is gathered water sample and record from PH keeps sample the pond, closes three-way solenoid valve 15 after finishing the action that keeps sample;
5) open solenoid valve 12, discharge the PH remaining water sample in the pond that keeps sample, and get back to step 1).
B) the multiparameter step that keeps sample that exceeds standard:
1) sends instruction unpack solenoid valve 13 and water pump 23, close solenoid valve 14, make water sample enter multiparameter and keep sample and close solenoid valve 13 and water pump 23 behind the pond;
2) start determining instrument, read the numerical value of mensuration and judge whether to exceed standard, if do not exceed standard then execution in step 4);
3) numerical value of Ce Dinging exceeds standard, and sends the control signal that exceeds standard, and switches three-way solenoid valve 15, and the equal proportion sampling instrument is gathered water sample and made the corresponding parameter tags that exceed standard from multiparameter keeps sample the pond, closes three-way solenoid valve 15 after finishing the action that keeps sample;
4) open solenoid valve 14, discharge the multiparameter remaining water sample in the pond that keeps sample, and get back to step 1).
Water sample on-line monitoring and overproof sample holding apparatus of the present invention, can realize the real-time PH of water sample simultaneously and other parameter monitorings in certain mensuration cycle and the operation that keeps sample that exceeds standard are arranged, the water sample of being gathered that exceeds standard does not have the time difference, the accuracy height, has real-time water sample representativeness, the operation that keeps sample of carrying out continuously, monitor accurately and exceed standard.
Description of drawings
Fig. 1 is the structural representation of embodiment 1 water sample on-line monitoring and overproof sample holding apparatus
Fig. 2 is the structural representation of embodiment 2 water sample on-line monitoring and overproof sample holding apparatus
The process flow diagram that Fig. 3 exceeds standard and keeps sample and move for PH among the embodiment 1
The process flow diagram that Fig. 4 exceeds standard and keeps sample and move for PH among the embodiment 2
The process flow diagram that Fig. 5 keeps sample for multiparameter exceeds standard and moves
11,12,13, the 14-solenoid valve, 15, the 17-three-way solenoid valve,
21,22, the 23-water pump, the 31-PH pond that keeps sample, the 32-multiparameter pond that keeps sample,
41-water sample water inlet pipe, 42-water sample rising pipe, 43,44, the 46-water-supply-pipe,
45,47-drainpipe, 48, the 49-sampling pipe,
51-equal proportion sampling instrument, 52-PH meter, 53-COD instrument, 54-ammonia nitrogen total phosphorus determination instrument, 55-programmable controller
Embodiment
Embodiment 1
A kind of water sample on-line monitoring and overproof sample holding apparatus as shown in Figure 1, comprises water sample water inlet pipe 41, water sample rising pipe 42, multiparameter pond and the PH pond that keeps sample that keeps sample,
The detection probe of PH meter is connected to the PH pond that keeps sample, and can measure pH value; The detection probe of COD instrument and ammonia nitrogen-total phosphorus determination instrument is connected to the multiparameter pond that keeps sample, and can measure COD/ ammonia nitrogen/total phosphorus numerical value; PH keeps sample and is connected with drainpipe 45 between pond and the water sample rising pipe, and drainpipe is provided with solenoid valve 12;
The water sample water inlet pipe is connected to the multiparameter pond that keeps sample by water-supply-pipe 46, and water-supply-pipe upper edge water (flow) direction sets gradually solenoid valve 13 and water pump 23; Multiparameter keeps sample and is connected with drainpipe 47 between pond and the water sample rising pipe, and drainpipe is provided with solenoid valve 14;
The equal proportion sampling instrument is connected to three-way solenoid valve 15, and the other two ends of three-way solenoid valve are connected to PH pond and the multiparameter pond that keeps sample that keeps sample by sampling pipe 48,49 respectively;
PH meter, COD instrument and ammonia nitrogen-total phosphorus determination instrument are connected with the RS322 serial data line with programmable controller (PLC) 51 respectively;
Programmable controller is connected respectively to solenoid valve 11,12,13,14, three-way solenoid valve 15 and water pump 21,23 by signal translating system.
The programmable controller action that keeps sample to exceeding standard is controlled, and carries out the action that keeps sample that exceeds standard of PH and COD/ ammonia nitrogen/total phosphorus respectively.
PH exceeds standard and keeps sample the motion action process as shown in Figure 3, may further comprise the steps:
1) programmable controller sends instruction unpack solenoid valve 11 and water pump 21, and water sample is from the water sample water inlet pipe, enters the PH pond that keeps sample from water-supply-pipe 43 under the effect of water pump 21;
2) read the PH data from the PH meter,
3) judge whether the PH data exceed standard, if do not exceed standard, then execution in step 2), if exceed standard then execution in step 4);
4) PH superscalar data, programmable controller sends the PH control signal that exceeds standard, close solenoid valve 12, close the water pump of opening in institute's step 1) 21, switch three-way solenoid valve 15, the equal proportion sampling instrument keeps sample water sample the pond in sampling pipe 48 is drawn into the water sample bottle from PH, by the programmable controller record, make the PH mark and feed back remaining water sample bottle number, closes three-way solenoid valve 15 after finishing the action that keeps sample;
5) programmable controller is opened solenoid valve 12, and the PH remaining water sample that keeps sample in the pond is discharged from water sample rising pipe 42, and got back to step 1) through drainpipe 45.
COD/ ammonia nitrogen/total phosphorus exceeds standard and keeps sample operating process as shown in Figure 3, may further comprise the steps:
1) programmable controller sends instruction unpack solenoid valve 13 and water pump 23, closes solenoid valve 14, and make water sample enter multiparameter and keep sample and close solenoid valve 13 and water pump 23 behind the pond,
2) programmable controller starts COD instrument and ammonia nitrogen-total phosphorus determination instrument, and reads COD/ ammonia nitrogen/total phosphorus numerical value, judges whether to exceed standard, if do not exceed standard then execution in step 4);
3) numerical value of Ce Dinging exceeds standard, programmable controller sends the control signal that exceeds standard, switch three-way solenoid valve 15, the equal proportion sampling instrument is from adopting water sample sampling pipe 49 and be drawn in the water sample bottle from the multiparameter Chi Zhongjing that keeps sample, by programmable controller record, make corresponding mark and feed back remaining water sample bottle number, close three-way solenoid valve 15 after finishing the action that keeps sample;
4) open solenoid valve 14, step 1) is discharged and got back to the multiparameter remaining water sample that keeps sample in the pond through drainpipe 47 from water sample rising pipe 42.
The mensuration cycle of COD instrument and ammonia nitrogen-total phosphorus determination instrument was generally more than 40 minutes, will guarantee in the time of before each the mensuration that enough water samples enter multiparameter and keep sample in the pond, was generally 2000ml; By the opening and closing may command interval time volume of water sample of water pump 23 is set.The PH meter can be realized online instant mensuration.Therefore adopt device of the present invention can realize simultaneously to the monitoring of PH, COD/ ammonia nitrogen/total phosphorus parameter and the operation that keeps sample that exceeds standard.
When COD/ ammonia nitrogen/total phosphorus and PH exceed standard simultaneously, only stay the water sample that exceeded standard at that time, and by the PLC mark that exceeds standard simultaneously.
As required, programmable controller can also be connected to monitoring host computer by Ethernet, is connected with touch LCD screen by data line.
Embodiment 2
As shown in Figure 2, water sample water inlet pipe 41 is connected to a three-way solenoid valve 17, and the in addition two ends of this three-way solenoid valve connect the water-supply- pipe 43,44 and the water pump 21,22 of two groups of parallel connections respectively, and above-mentioned two groups of water-supply-pipes and water pump and the PH pond that keeps sample is connected; PH keeps sample and is connected with drainpipe 45 between pond and the water sample rising pipe 42, and drainpipe is provided with solenoid valve 12;
Programmable controller is connected respectively to solenoid valve 12,13,14, three- way solenoid valve 17,15 and water pump 21,22,23 by signal translating system.All the other structures are with embodiment 1.
PH exceeds standard and keeps sample the motion action process as shown in Figure 4, may further comprise the steps:
1) send instruction unpack three-way solenoid valve 17 and water pump 21, water sample is from the water sample water inlet pipe, by three-way solenoid valve 17, enters the PH pond that keeps sample from water-supply-pipe 43 under the effect of water pump 21; Perhaps open three-way solenoid valve 17 and water pump 22, water sample is from the water sample water inlet pipe, by three-way solenoid valve 17, enters the PH pond that keeps sample from water-supply-pipe 44 under the effect of water pump 22;
2) read the PH data from the PH meter,
3) judge whether the PH data exceed standard, if do not exceed standard, then execution in step 2), if exceed standard then execution in step 4);
4) PH superscalar data, programmable controller sends the PH control signal that exceeds standard, close solenoid valve 12, close water pump 21 or the water pump 22 opened in institute's step 1), switch three-way solenoid valve 15, the equal proportion sampling instrument keeps sample water sample the pond in sampling pipe 48 is drawn into the water sample bottle from PH, by the programmable controller record, make the PH mark and feed back remaining water sample bottle number, closes three-way solenoid valve 15 after finishing the action that keeps sample;
5) programmable controller is opened solenoid valve 12, and the PH remaining water sample that keeps sample in the pond is discharged from water sample rising pipe 42, and got back to step 1) through drainpipe 45.
All the other operations exceed standard as multiparameter and keep sample operation with embodiment 1.
Claims (7)
1, a kind of water sample on-line monitoring and overproof sample holding apparatus, comprise programmable controller (55), PH meter (52), equal proportion sampling instrument (51), determining instrument, water sample water inlet pipe (41) and water sample rising pipe (42), it is characterized in that, PH in parallel pond (31) and the multiparameter pond (32) that keeps sample that keeps sample is set between water sample water inlet pipe (41) and water sample rising pipe (42);
PH meter detection probe is connected to the PH pond that keeps sample, and the detection probe of determining instrument is connected to the multiparameter pond that keeps sample.
2, the described a kind of water sample on-line monitoring and overproof sample holding apparatus of claim 1, it is characterized in that, water sample water inlet pipe (41) is connected to the PH pond (31) that keeps sample by water-supply-pipe (43), and water-supply-pipe upper edge water (flow) direction sets gradually solenoid valve (11) and water pump (21); Multiparameter keeps sample and is connected with drainpipe (45) between pond and the water sample rising pipe, and drainpipe is provided with solenoid valve (12);
Water sample water inlet pipe (41) is connected to the multiparameter pond that keeps sample by water-supply-pipe (46), and water-supply-pipe upper edge water (flow) direction sets gradually solenoid valve (13) and water pump (23); Multiparameter keeps sample and is connected with drainpipe (47) between pond and the water sample rising pipe, and drainpipe is provided with solenoid valve (14);
The equal proportion sampling instrument is connected to three-way solenoid valve (15), and the other two ends of three-way solenoid valve are connected to PH pond and the multiparameter pond that keeps sample that keeps sample by sampling pipe (48,49) respectively;
Programmable controller is connected respectively to determining instrument, PH meter, equal proportion sampling instrument by the serial communication data line;
Programmable controller is connected respectively to solenoid valve (11,12,13,14), three-way solenoid valve (15) and water pump (21,23) by signal translating system.
3, the described a kind of water sample on-line monitoring and overproof sample holding apparatus of claim 1, it is characterized in that, water sample water inlet pipe (41) is connected to a three-way solenoid valve (17), the in addition two ends of this three-way solenoid valve connect the water-supply-pipe (43,44) and the water pump (21,22) of two groups of parallel connections respectively, and above-mentioned two groups of water-supply-pipes and water pump and the PH pond that keeps sample is connected; PH keeps sample and is connected with drainpipe (45) between pond and the water sample rising pipe, and drainpipe is provided with solenoid valve (12);
Water sample water inlet pipe (41) is connected to the multiparameter pond that keeps sample by water-supply-pipe (46), and water-supply-pipe upper edge water (flow) direction sets gradually solenoid valve (13) and water pump (23); Multiparameter keeps sample and is connected with drainpipe (47) between pond and the water sample rising pipe, and drainpipe is provided with solenoid valve (14);
The equal proportion sampling instrument is connected to three-way solenoid valve (15), and the other two ends of three-way solenoid valve are connected to PH pond and the multiparameter pond that keeps sample that keeps sample by sampling pipe (48,49) respectively;
Programmable controller is connected respectively to determining instrument, PH meter, equal proportion sampling instrument by the serial communication data line;
Programmable controller is connected respectively to solenoid valve (12,13,14), three-way solenoid valve (17,15) and water pump (21,22,23) by signal translating system.
4, the described a kind of water sample on-line monitoring and overproof sample holding apparatus of claim 1 is characterized in that, described determining instrument comprises COD instrument and ammonia nitrogen-total phosphorus determination instrument.
5, the described a kind of water sample on-line monitoring and overproof sample holding apparatus of claim 1 is characterized in that described programmable controller is connected to monitoring host computer by Ethernet.
6, the described a kind of water sample on-line monitoring and overproof sample holding apparatus of claim 1 is characterized in that described programmable controller is connected to display screen by serial data line.
7, the method for operating of the described a kind of many water sample on-line monitoring and overproof sample holding apparatus of claim 1 is characterized in that, programmable controller is carried out following operation:
A) the PH operation that keeps sample that exceeds standard:
1) sends instruction unpack three-way solenoid valve (17) or solenoid valve (11), open water pump (21) or water pump (22), make water sample enter the PH pond that keeps sample;
2) read the PH data from the PH meter,
3) judge whether the PH data exceed standard, if do not exceed standard, then execution in step 2), if exceed standard then execution in step 4);
4) PH superscalar data, send the PH control signal that exceeds standard, close solenoid valve (12), the water pump (21) or the water pump (22) of closing in the step 1) to be opened, switch three-way solenoid valve (15), the equal proportion sampling instrument keeps sample from PH and gathers water sample the pond and as the PH mark that exceeds standard, and closes three-way solenoid valve (15) after finishing the action that keeps sample;
5) open solenoid valve (12), discharge the PH remaining water sample in the pond that keeps sample, and get back to step 1);
B) the multiparameter step that keeps sample that exceeds standard:
1) sends instruction unpack solenoid valve (13), close solenoid valve (14), open water pump (23), make water sample enter multiparameter and keep sample and close solenoid valve (13) and water pump (23) behind the pond;
2) start determining instrument, read the numerical value of mensuration and judge whether to exceed standard, if do not exceed standard then execution in step 4);
3) numerical value of Ce Dinging exceeds standard, and sends the control signal that exceeds standard, and switches three-way solenoid valve (15), and the equal proportion sampling instrument is gathered water sample and made the corresponding parameter tags that exceed standard from multiparameter keeps sample the pond, closes three-way solenoid valve (15) after finishing the action that keeps sample;
4) open solenoid valve (14), discharge the multiparameter remaining water sample in the pond that keeps sample, and get back to step 1).
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| CN 200810033097 CN101493471B (en) | 2008-01-25 | 2008-01-25 | Water sample on-line monitoring and overproof sample holding apparatus and operation method thereof |
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| CN102590119A (en) * | 2012-02-28 | 2012-07-18 | 江苏大学 | Harmful bacterium real-time detecting method and detecting device in water environment for fish-farming based on micro-fluidic chip |
| CN102866123A (en) * | 2012-09-12 | 2013-01-09 | 南京新思维自动化科技有限公司 | Wastewater sampler/sample reserving device capable of continuously monitoring water sample with chemical oxygen demand (COD) concentration peak value |
| CN103245533A (en) * | 2013-05-02 | 2013-08-14 | 中国科学院合肥物质科学研究院 | Water sample collector for heavy metal online analyzer in water |
| CN103293028A (en) * | 2012-03-05 | 2013-09-11 | 福州智元仪器设备有限公司 | On-line over-standard sample retention device |
| CN104062325A (en) * | 2014-06-16 | 2014-09-24 | 厦门华厦职业学院 | Heavy metal industrial wastewater exceeding emission prejudging and sample reserving system |
| CN105004761A (en) * | 2015-06-26 | 2015-10-28 | 华电电力科学研究院 | Denitration system escaping ammonia on-line continuous monitoring device and method |
| CN105301270A (en) * | 2015-11-26 | 2016-02-03 | 上海歆峥智能科技有限公司 | Water quality online monitoring intelligent control system |
| CN105424898A (en) * | 2015-11-04 | 2016-03-23 | 张萍 | Fixed water quality automatic monitoring system with continuous work capacity |
| CN107036845A (en) * | 2017-06-05 | 2017-08-11 | 苏州天信德环保科技有限公司 | A kind of water quality sampling pretreatment system |
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| US3930798A (en) * | 1973-05-09 | 1976-01-06 | Gunter Schierjott | Method and apparatus for testing aqueous samples |
| JP3291879B2 (en) * | 1993-11-30 | 2002-06-17 | 株式会社島津製作所 | Photo-oxidative decomposition apparatus, method and apparatus for analyzing nitrogen compounds and phosphorus compounds in water using the same |
| CN2890887Y (en) * | 2006-01-20 | 2007-04-18 | 上海市环境监测中心 | Overflow type automatic updating waste water sample reserving groove |
| CN100483100C (en) * | 2006-01-20 | 2009-04-29 | 上海市环境监测中心 | Waste-water on-line monitoring synchronous sampling sample-leaving system |
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| CN102590119A (en) * | 2012-02-28 | 2012-07-18 | 江苏大学 | Harmful bacterium real-time detecting method and detecting device in water environment for fish-farming based on micro-fluidic chip |
| CN103293028A (en) * | 2012-03-05 | 2013-09-11 | 福州智元仪器设备有限公司 | On-line over-standard sample retention device |
| CN102866123A (en) * | 2012-09-12 | 2013-01-09 | 南京新思维自动化科技有限公司 | Wastewater sampler/sample reserving device capable of continuously monitoring water sample with chemical oxygen demand (COD) concentration peak value |
| CN103245533A (en) * | 2013-05-02 | 2013-08-14 | 中国科学院合肥物质科学研究院 | Water sample collector for heavy metal online analyzer in water |
| CN103245533B (en) * | 2013-05-02 | 2015-09-02 | 中国科学院合肥物质科学研究院 | The water sample acquisition device of heavy metal online analyzer in a kind of water |
| CN104062325A (en) * | 2014-06-16 | 2014-09-24 | 厦门华厦职业学院 | Heavy metal industrial wastewater exceeding emission prejudging and sample reserving system |
| CN105004761A (en) * | 2015-06-26 | 2015-10-28 | 华电电力科学研究院 | Denitration system escaping ammonia on-line continuous monitoring device and method |
| CN105424898A (en) * | 2015-11-04 | 2016-03-23 | 张萍 | Fixed water quality automatic monitoring system with continuous work capacity |
| CN105301270A (en) * | 2015-11-26 | 2016-02-03 | 上海歆峥智能科技有限公司 | Water quality online monitoring intelligent control system |
| CN107036845A (en) * | 2017-06-05 | 2017-08-11 | 苏州天信德环保科技有限公司 | A kind of water quality sampling pretreatment system |
| CN108225848A (en) * | 2017-12-22 | 2018-06-29 | 河海大学 | One kind is according to discharge process equal proportion continuous sampling system |
| CN108225848B (en) * | 2017-12-22 | 2020-05-22 | 河海大学 | Continuous sampling device in equal proportion according to flow process |
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