CN106290217A - Multiparameter on-line computing model - Google Patents
Multiparameter on-line computing model Download PDFInfo
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- CN106290217A CN106290217A CN201510288821.4A CN201510288821A CN106290217A CN 106290217 A CN106290217 A CN 106290217A CN 201510288821 A CN201510288821 A CN 201510288821A CN 106290217 A CN106290217 A CN 106290217A
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Abstract
The invention discloses a kind of multiparameter on-line computing model, including water quality monitoring remote sampling device, acidifying solarization air cell, high-temp combustion oxidation unit, combined dryer, non-dispersive infrared gas detector, ozonator, chemiluminescence detector, depurator；High-temp combustion oxidation unit is high-temp combustion pyrolysis oxidization device；Further improvement is that: water quality monitoring remote sampling device includes sampling pump, main pipeline, branch pipe(tube), particle separator, level switch, banked direction control valves, syringe pump, discharge casing；After the port of export of acidifying solarization air cell is connected with high-temp combustion oxidation unit, depurator, combined dryer, non-dispersive infrared gas detector successively, the outlet with ozonator is connected with chemiluminescence detector entrance respectively.Ying Xingqiang of the present invention, reliable, safeguard simple, cost performance height, non-secondary pollution, multiparameter can be measured simultaneously.
Description
Technical field
The present invention relates to a kind of multi-parameter water-quality on-line monitoring instrument, be specifically for use in and use high-temp combustion oxidizing process synchronous detecting chemical oxygen consumption of sewage (COD), total organic carbon (TOC), the ambient water quality of total nitrogen (TN) three parameter automatically to monitor field.
Background technology
In recent years, along with expansion and the development of large-scale industry in city, the concern of problem of environmental pollution extremely people, and the discharge of organic pollution is the main cause causing river, lake pollution.In Monitoring And Analysis of The Quality, the important indicator evaluating water body organism pollution level includes chemical oxygen consumption (COC) (COD), total organic carbon (TOC) and total nitrogen (TN) etc..Therefore, it is achieved COD, TOC and TN content in various water sources or disposal of pollutants source is carried out on-line monitoring real-time, continuous, energy-saving and emission-reduction, the aspect such as preserve the ecological environment are had great significance.
In the prior art, the method for on-line measurement COD in water body is a lot, and conventional assay method has potassium dichromate resolution method, UV meter method, electrochemical measurements and high-temp combustion oxidation non-dispersive infrared method (TOC method) etc..
Potassium dichromate resolution method refers to use potassium dichromate to do oxidant, and the Organic substance in oxidation water sample, is calculated the amount consuming oxidant, converse COD value further, for traditional national standard method by photometer or electrode under certain condition.UV meter method is used for characterizing water-quality COD, and i.e. in water sample, the ultraviolet light of specific wavelength (254nm) is had and absorbs more by force by specific dissolved organic matter, is convertible into COD value by dependency again after measurement absorbance.Electrochemical process be contact with water sample according to electrode after cause redox reaction, the change of its electric current is relevant to organic concentration, indirectly measures COD value.High-temp combustion oxidation non-dispersive infrared method is the quantitative water sample burning after processing, and complete oxidation organic component therein re-uses non-dispersive infrared detector and measures its CO generated2Concentration, immediately arrives at TOC value, then is simultaneously converted into COD value by dependency.
In above-mentioned online COD automatic monitoring method, potassium dichromate resolution method due in water sample partial organic substances be difficult to oxidized dose of oxidation, have can not aoxidize the most at all.Therefore, such online COD instrument is dfficult to apply to high chlorine sewage, highly basic sewage, concentration significantly changes sewage and the automatic of surface water is monitored, and is only capable of meeting the needs of partial contamination source online auto monitoring.It addition, the analytical cycle of this quasi-instrument is the longest, need about 60 minutes, it is difficult to realize on-line monitoring truly.The reagent type used is more, and pump line system is more complicated, therefore more loaded down with trivial details in terms of the replacing of reagent and the replacing maintenance of pump line.There is also the secondary pollution of the heavy metal such as chromium, hydrargyrum, waste liquid needs special process problem.UV meter method, owing to not having the Organic substance of ultraviolet light absorption in numerous sewage containing ethanol, saccharide, organic acid etc., may be only available for, without particle, ingredient stability, water white water body, making the range of application of UV meter method be very limited.Electrochemical process apparatus structure is simple, reliable, after needing its analysis result and national standard method to be compared test and carries out suitable correction, indirectly measures COD value.But owing to its correction coefficient of different water quality is the most different, therefore, the instrument after correction can only fixation measuring same water quality.High-temp combustion oxidation non-dispersive infrared method utilizes high-temp combustion to aoxidize, and oxidation operation rate nearly reaches 100%, the most more can accurately express content of organics in water sample.The Monitoring lower-cut of such online COD instrument is relatively low, dependable performance, almost can meet the requirement of all source of sewage online auto monitorings.It addition, the shortest need of its analytical cycle 5 minutes.In addition to adding DIC removal unit, pipe-line system COD more online than the electrochemical process instrument of this quasi-instrument is simpler, and reliability is the most also greatly improved, and additionally its reagent used is the most less, and operating cost is low, again non-secondary pollution.
Current state-of-the-art TN measuring method is high-temp combustion oxidation chemistry luminescence method.The method is after high-temperature sample burning, oxidation reaction will to occur, and wherein the nitride in sample is quantitatively converted into NO, NO and ozone reacts and is converted into the NO of excited state2*, as the NO of excited state2* transit to launch photon during ground state, detect chemiluminescent intensity by Semiconductor Chemistry luminescence detector and measure the total nitrogen content in sample.It is interior to the analysis of total nitrogen in liquid, gaseous state or solid sample that the instrument of current domestic utilization the method exploitation is applied substantially to laboratory, although minority foreign country on-line monitoring instrument has used high-temp combustion oxidation chemistry luminescence method to survey TN, but can measure simultaneously COD, TOC, TN tri-the water quality online automatic monitor of parameter have not yet to see report.
Along with people's raising to environmental consciousness, control to environmental pollutants is increasingly stricter, and the requirement to detection technique is more and more higher.At present, the assay method of various water pollution aggregative indicator just develops towards automatization, multiparameter and Instrumental Analysis direction.How research improves representativeness and the verity of analysis water-like, develop a kind of strong adaptability, reliable, safeguard simple, cost performance height, non-secondary pollution, the water quality online automatic monitor that can simultaneously measure multiparameter has become the task of top priority.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, propose a kind of strong adaptability, reliable, safeguard simple, cost performance height, non-secondary pollution, the multiparameter on-line computing model of multiparameter can be measured simultaneously.
The present invention is achieved through the following technical solutions technical goal.
Multiparameter on-line computing model, including water quality monitoring remote sampling device, acidifying solarization air cell, high-temp combustion oxidation unit, combined dryer, non-dispersive infrared gas detector, ozonator, chemiluminescence detector；It thes improvement is that: also include depurator；Described high-temp combustion oxidation unit is high-temp combustion pyrolysis oxidization device.
In said structure, described water quality monitoring remote sampling device includes sampling pump, main pipeline, branch pipe(tube), particle separator, level switch, banked direction control valves, syringe pump, discharge casing.
In said structure, described sampling pump is connected with main pipeline；The opposite side of described main pipeline is connected to shunt water sample with branch pipe(tube)；The porch horizontal positioned particle separator of described branch pipe(tube)；It is provided with a sample tap in branch pipe(tube) water (flow) direction section from top to bottom, level switch and the probe tube being connected with one input port of banked direction control valves stretch in branch pipe(tube) at sample tap, it stretches into direction from top to bottom, it is ensured that it is contrary with water (flow) direction in branch pipe(tube) that sampling sucks direction；Other several ports of described banked direction control valves are connected with syringe pump, two standard sample reservoirs, discharging tube and acidifying solarization air cell arrival end respectively.
In said structure, after the port of export of described acidifying solarization air cell is connected with high-temp combustion oxidation unit, depurator, combined dryer, non-dispersive infrared gas detector successively, the outlet with ozonator is connected with chemiluminescence detector entrance respectively.
In said structure, described sampling pump, level switch, syringe pump, banked direction control valves, high-temp combustion oxidation unit, non-dispersive infrared gas detector, chemiluminescence detector etc. are connected with the control module of instrument respectively.
The present invention compared with prior art, has the positive effect that:
The present invention can carry out remote online to the water quality of various complicated components and automatically monitor, not only detection process quick and precisely (one-shot measurement process about 5 minutes), operating cost is low, maintenance is simple, outside non-secondary pollution, can also synchronous detecting COD, TOC, TN tri-parameter, expand range.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
1-sampling pump in figure, 2-main pipeline, 3-branch pipe(tube), 4-particle separator, 5-level switch, 6-syringe pump, 7-banked direction control valves, 8,9-standard sample reservoir, 10-discharge casing, 11-is acidified solarization air cell, 12-high-temp combustion oxidation unit, 13-depurator, 14-combined dryer, 15-non-dispersive infrared gas detector, 16-ozonator, 17-chemiluminescence detector, 18-sample tap, 19-probe tube, 20-discharging tube.
Detailed description of the invention
Below according to accompanying drawing and the invention will be further described in conjunction with the embodiments.
Multiparameter on-line computing model shown in accompanying drawing, sampling pump 1 is connected with main pipeline 2, and the opposite side of main pipeline 2 is connected to shunt water sample with branch pipe(tube) 3.The porch horizontal positioned particle separator 4 of branch pipe(tube) 3, it is ensured that the particle that in water sample, external diameter is less can enter branch pipe(tube), the foreign material of larger particles continue to drain into discharge casing 10 with main pipeline.It is provided with a sample tap 18 in branch pipe(tube) 3 water (flow) direction section from top to bottom, level switch 5 and the probe tube 19 being connected with 7 one input ports of banked direction control valves stretch in branch pipe(tube) at sample tap, it stretches into direction from top to bottom, it is ensured that it is contrary with water (flow) direction in branch pipe(tube) that sampling sucks direction.Other several ports of banked direction control valves are connected with syringe pump 6, two standard sample reservoir 8,9, discharging tube 20 and acidifying solarization air cell 11 arrival end respectively.After the port of export of acidifying solarization air cell 11 is connected with high-temp combustion oxidation unit 12, depurator 13, combined dryer 14, non-dispersive infrared gas detector 15 successively, the outlet with ozonator 16 is connected with chemiluminescence detector 17 entrance respectively.Above-mentioned sampling pump, level switch, syringe pump, banked direction control valves, high-temp combustion oxidation unit, non-dispersive infrared gas detector, chemiluminescence detector etc. are connected with the control module of instrument respectively.
Under instrument runs programme-control, before instrument judges that the measurement time is at hand, first shift to an earlier date arranging of time a few minutes depending on the distance at water source to instrumented site, control the water quality monitoring remote sampling device fresh water sample of collection, after carrying out sample pretreatment, syringe pump extracts representative water sample by banked direction control valves quantitative sample injection automatically to being acidified solarization air cell, the gas generated after the acidified aeration of water sample is delivered to high-temp combustion oxidation unit successively by carrier gas, depurator, combined dryer etc., COD is detected respectively again by non-dispersive infrared gas detector and chemiluminescence detector, TOC, the content of TN, thus complete remote sampling, sample pretreatment, quantitative sample injection, high-temperature sample combustion oxidation, gas cool drying processes and the full process automatization of detection controls.
Claims (5)
1. a multi-parameter water-quality on-line computing model, including water quality monitoring remote sampling device, acidifying solarization air cell, high-temp combustion oxidation unit, combined dryer, non-dispersive infrared gas detector, ozonator, chemiluminescence detector；It is characterized in that: also include depurator；Described high-temp combustion oxidation unit is high-temp combustion pyrolysis oxidization device.
Multiparameter on-line computing model the most according to claim 1, it is characterised in that: described water quality monitoring remote sampling device includes sampling pump, main pipeline, branch pipe(tube), particle separator, level switch, banked direction control valves, syringe pump, discharge casing.
Multiparameter on-line computing model the most according to claim 2, it is characterised in that: described sampling pump is connected with main pipeline；The opposite side of described main pipeline is connected to shunt water sample with branch pipe(tube)；The porch horizontal positioned particle separator of described branch pipe(tube)；It is provided with a sample tap in branch pipe(tube) water (flow) direction section from top to bottom, level switch and the probe tube being connected with one input port of banked direction control valves stretch in branch pipe(tube) at sample tap, it stretches into direction from top to bottom, it is ensured that it is contrary with water (flow) direction in branch pipe(tube) that sampling sucks direction；Other several ports of described banked direction control valves are connected with syringe pump, two standard sample reservoirs, discharging tube and acidifying solarization air cell arrival end respectively.
Multiparameter on-line computing model the most according to claim 3, it is characterized in that: after the port of export of described acidifying solarization air cell is connected with high-temp combustion oxidation unit, depurator, combined dryer, non-dispersive infrared gas detector successively, the outlet with ozonator is connected with chemiluminescence detector entrance respectively.
Multiparameter on-line computing model the most according to claim 4, it is characterised in that: described sampling pump, level switch, syringe pump, banked direction control valves, high-temp combustion oxidation unit, non-dispersive infrared gas detector, chemiluminescence detector etc. are connected with the control module of instrument respectively.
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| CN201510288821.4A CN106290217A (en) | 2015-06-01 | 2015-06-01 | Multiparameter on-line computing model |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107632108A (en) * | 2017-08-30 | 2018-01-26 | 广东上风环保科技有限公司 | A kind of method for determining water chemical oxygen demand |
| CN109702752A (en) * | 2018-03-23 | 2019-05-03 | 浙江索奥环境技术有限公司 | Syringe type mark-on reclaims water quality monitoring quality control machine people |
| CN112362833A (en) * | 2020-10-28 | 2021-02-12 | 福建省吉龙德环保科技有限公司 | Continuous flow analysis system applied to unmanned ship |
-
2015
- 2015-06-01 CN CN201510288821.4A patent/CN106290217A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107632108A (en) * | 2017-08-30 | 2018-01-26 | 广东上风环保科技有限公司 | A kind of method for determining water chemical oxygen demand |
| CN109702752A (en) * | 2018-03-23 | 2019-05-03 | 浙江索奥环境技术有限公司 | Syringe type mark-on reclaims water quality monitoring quality control machine people |
| CN112362833A (en) * | 2020-10-28 | 2021-02-12 | 福建省吉龙德环保科技有限公司 | Continuous flow analysis system applied to unmanned ship |
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