CN102866123B - Wastewater sampler/sample reserving device capable of continuously monitoring water sample with chemical oxygen demand (COD) concentration peak value - Google Patents
Wastewater sampler/sample reserving device capable of continuously monitoring water sample with chemical oxygen demand (COD) concentration peak value Download PDFInfo
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- CN102866123B CN102866123B CN 201210335789 CN201210335789A CN102866123B CN 102866123 B CN102866123 B CN 102866123B CN 201210335789 CN201210335789 CN 201210335789 CN 201210335789 A CN201210335789 A CN 201210335789A CN 102866123 B CN102866123 B CN 102866123B
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Abstract
The invention discloses a wastewater sampler/sample reserving device capable of continuously monitoring a water sample with a chemical oxygen demand (COD) concentration peak value and a monitoring method. The wastewater sampler/sample reserving device comprises a wastewater sampling peristaltic pump, a COD concentration ultraviolet (UV) measurement unit, a concentration peak value wastewater temporary storage device, a sample reserving device, an intelligent controller, a plurality of outer discharge pipes, an outer inlet pipe, an outer sampling pipe and a plurality of electromagnetic valves, wherein the intelligent controller controls the actions of the wastewater sampling peristaltic pump and the electromagnetic valves, and receives a signal from the COD concentration UV measurement unit. A wastewater discharge site is continuously monitored, only a wastewater sample with maximum COD content is stored within a monitoring cycle, and an analytical test is only required to be performed once, so that the workload of environmental protection staff is greatly reduced, and test cost is greatly reduced; an analytical tester is not required to be arranged on a pollution discharge site, so that the investment and construction of field equipment can be greatly reduced; and periodical field calibration and correction are not required, so that the workload is also greatly reduced.
Description
Technical field
The present invention relates to waste water on-Line Monitor Device technical field, relate in particular to a kind of can continuous monitoring the waste water of COD peak concentration water sample adopt/sample leaving device, the invention still further relates to and a kind ofly adopt this waste water to adopt/monitoring method of sample leaving device.
Background technology
Along with rapid economy development, environmental protection more and more is subjected to everybody attention.Discharge of wastewater unit to be realized that online monitoring is exactly to discharge enterprise for the discharging up to standard, reasonable of waste water in order retraining, thereby to realize environmental protection, be conducive to the sustainable development of society.
Chemistry oxygen level (COD) has reflected the degree that water body is polluted by reducing substances, is an important indicator of water quality monitoring.China mainly contains two kinds for waste water COD on-line monitoring instrument at present, and a kind of is the potassium dichromate method analytical instrument, and a kind of is ultraviolet luminosity UV method monitoring instrument.Potassium dichromate method is national standard method to the waste water COD analytical test, and measurement result is the result of COD content, belongs to the direct method of measurement.Potassium dichromate method monitoring instrument automaticity height is analyzed the gained data accurately, reliably.But the analytical cycle of potassium dichromate method analytical instrument is generally longer, this just give the discharging unit realize " row is stolen in surprise attack " in the short time provide may, thereby make that the result of monitoring is not active data the most; Required reagent cost is higher, thus the cost of once analyzing just than higher, if monitor once at least according to present national requirements each hour, it is too expensive then to monitor cost; Instrument for the scene also needs regularly to calibrate in addition.Ultraviolet luminosity UV method monitoring instrument utilizes in the waste water organism to ultraviolet absorption, the ultraviolet absorptivity value that obtains is set up regression equation with COD again, obtain the numerical value of COD in the waste water, this kind method speed is fast, real-time is good, so can realize online real-time monitoring truly, and need not extra chemical reagent.But ultraviolet luminosity UV method monitoring instrument needs often to demarcate, proofread and correct with the data of potassium dichromate method monitoring instrument, thereby sometimes can not realize well proofreading and correct makes measurement result inaccurate.
This shows, the system monitoring cost costliness that adopts potassium dichromate method to monitor in the monitoring system of present waste water COD, the monitoring gap periods is longer, possibility is provided for " surprise attack steal row " of some enterprises in the realization short time, thereby makes monitoring effect effective inadequately; Adopt the system of ultraviolet luminosity UV method monitoring instrument then to need often to proofread and correct and demarcate, otherwise can not obtain very accurate measurement result, it is also more loaded down with trivial details to work.
Summary of the invention
The objective of the invention is to use potassium dichromate method monitoring instrument monitoring cost costliness in the existing effluent monitoring system in order to overcome, can not effectively avoid illegal enterprise to realize the problem that the high concentration discharging in the short time makes the Monitoring Data inefficacy, and the problem that adopts ultraviolet luminosity UV monitoring instrument often to proofread and correct and to demarcate, and the problem that the monitoring method workload is big, efficient is not high.For this reason, the present invention proposes a kind of can continuous monitoring the waste water of COD peak concentration water sample adopt/sample leaving device, and adopt this waste water to adopt/monitoring method of sample leaving device.
In order to address the above problem, the present invention by the following technical solutions:
The waste water that the invention provides a kind of energy continuous monitoring COD peak concentration water sample is adopted/sample leaving device, comprise the sampling of wastewater peristaltic pump, COD concentration UV measuring unit, peak concentration waste water working storage, sample leaving device, intelligent controller, the first outer delivery pipe, the second outer delivery pipe, outer inlet tube, outer sampling pipe, first solenoid valve, second solenoid valve, the 3rd solenoid valve, the 4th solenoid valve and the 5th solenoid valve, the import of sampling of wastewater peristaltic pump links to each other with the entrance of outer inlet tube with COD concentration UV measuring unit respectively with outlet, the outlet of COD concentration UV measuring unit is connected in parallel to first solenoid valve and second solenoid valve, the other end of first solenoid valve links to each other with the entrance of peak concentration waste water working storage, the other end of second solenoid valve connects the first outer delivery pipe, the outlet of peak concentration waste water working storage is connected in parallel to the 3rd solenoid valve, the 4th solenoid valve and the 5th solenoid valve, the other end of the 3rd solenoid valve is connected with sample leaving device, the other end of the 4th solenoid valve connects the second outer delivery pipe, and the other end of the 5th solenoid valve is connected with outer sampling pipe; The action of intelligent controller control sampling of wastewater peristaltic pump, first solenoid valve, second solenoid valve, the 3rd solenoid valve, the 4th solenoid valve and the 5th solenoid valve, and receiving the signal that COD concentration UV measuring unit is exported, intelligent controller is provided with wireless GPRS module or cdma network module.
Further, described COD concentration UV measuring unit comprises light source, absorption cell and detecting device; Described detecting device can produce the electric signal that characterizes waste water COD content size; Described intelligent controller receives handles the electric signal that detecting device produces.
Further, described peak concentration waste water working storage and sample leaving device all are installed in the energy-saving refrigerator of low-power consumption, and described sample leaving device is at least one or more.
Further, outer sampling pipe is connected with the COD online analytical instrument.
Further, connecting pipe central shaft between the described first outer delivery pipe, second solenoid valve, COD concentration UV measuring unit and the outlet of sampling of wastewater peristaltic pump forms the angle of 5-15 degree successively from low to high with horizontal line, the connecting pipe central shaft between the outlet of described outer sampling pipe, the 5th solenoid valve and peak concentration waste water working storage forms the angle of 5-15 degree successively from low to high with horizontal line.
The present invention also provide a kind of based on can continuous monitoring the waste water of COD peak concentration water sample adopt/monitoring method of sample leaving device, may further comprise the steps:
Steps A, when monitoring periods began, all solenoid valve initial states were in closed condition, open first solenoid valve earlier, be stored in the peak concentration waste water working storage by sampling of wastewater peristaltic pump pumps water sample, storage is closed first solenoid valve after finishing, and opens second solenoid valve simultaneously;
Step B, the sampling of wastewater peristaltic pump constantly extracts water sample by COD concentration UV measuring unit, intelligent controller is monitored detector signal in the COD concentration UV measuring unit constantly, when intelligent controller institute monitored signal characterizes bigger waste water COD concentration, open the 4th solenoid valve earlier, emptying is stored in the water sample in the peak concentration waste water working storage, close the 4th solenoid valve again, close second solenoid valve when opening first solenoid valve, extracting current water sample is stored in the peak concentration waste water working storage, storage is closed first solenoid valve after finishing, and opens second solenoid valve simultaneously;
Step C, repeating step B finishes until a monitoring periods;
Step D opens the 3rd solenoid valve, and the waste water sample in the peak concentration waste water working storage is kept sample to the sample leaving device of sky, and the waste water that keeps sample is the waste water COD peak concentration sample in this monitoring periods, returns steps A and begins new monitoring periods.
Further, as the scene COD online analytical instrument is arranged, then can open the 5th solenoid valve earlier, a part of water sample is delivered to on-the-spot COD online analytical instrument analyze, when closing the 5th solenoid valve, carry out water sample among the step D process that keeps sample afterwards again.
The monitoring periods of monitoring method of the present invention can also carry out long-range setting by the environmental monitoring platform, the efforts at environmental protection personnel can carry out the modification in cycle by the environmental monitoring platform before a monitoring periods finished, after a monitoring periods finishes, intelligent controller can send corresponding announcement information and be sent to the environmental monitoring platform by wireless network, and the notice efforts at environmental protection personnel further analyze sample retrieval, test.
The present invention has following technique effect:
Apparatus of the present invention continuous institute's waste discharge is monitored constantly makes discharge of wastewater unit can realize attacking suddenly the discharging of arranging steathily, exceed standard at no time; Apparatus of the present invention are only preserved the water sample of waste water COD content maximum in a monitoring periods, the preservation water sample is few, significantly reduced environmental protection warden or guard's workload, reduced the cost of monitoring greatly, and only need analytical test once just can access the interior maximum COD content value of this monitoring periods, as the monitoring foundation, the supervision effect is more effective with this peak value; Because the final analysis testing time of one-period for once, lab analysis after the environmental protection warden or guard fetches enough draws test result, then can be without the test analytical instrument of erecting stage at the blowdown scene, thus significantly reduce the investment construction of field apparatus; Apparatus of the present invention need not regularly to demarcate and calibrate in addition, have also significantly reduced workload.
Description of drawings
Fig. 1 be the present invention a kind of can continuous monitoring the waste water of COD peak concentration water sample adopt/theory diagram of sample leaving device;
Fig. 2 be the present invention a kind of can continuous monitoring the waste water of COD peak concentration water sample adopt/structural representation of sample leaving device.
Number in the figure is explained: 1-goes into skirt outward, 2-sampling of wastewater peristaltic pump, 3-COD concentration UV measuring unit, 4-peak concentration waste water working storage, the 5-sample leaving device, 6-first solenoid valve, 7-second solenoid valve, 8-the 3rd solenoid valve, 9-the 4th solenoid valve, 10-the 5th solenoid valve, the 11-first outer delivery pipe, the 12-second outer delivery pipe, the outer sampling pipe of 13-, the 14-intelligent controller.
Embodiment
Describe the preferred embodiments of the present invention in detail below in conjunction with accompanying drawing.
Embodiment as shown in Figure 1, 2, present embodiment provides a kind of waste water of energy continuous monitoring COD peak concentration water sample to adopt/sample leaving device, comprises sampling of wastewater peristaltic pump 2, COD concentration UV measuring unit 3, peak concentration waste water working storage 4, sample leaving device 5, intelligent controller 14, the first outer delivery pipe 11, the second outer delivery pipe 12, outer inlet tube 1, outer sampling pipe 13, first solenoid valve 6, second solenoid valve 7, the 3rd solenoid valve 8, the 4th solenoid valve 9 and the 5th solenoid valve 10.
The import of sampling of wastewater peristaltic pump 2 links to each other with the entrance of outer inlet tube 1 with COD concentration UV measuring unit 3 respectively with outlet, the outlet of COD concentration UV measuring unit 3 is connected in parallel to first solenoid valve 6 and second solenoid valve 7, the other end of first solenoid valve 6 links to each other with the entrance of peak concentration waste water working storage 4, the other end of second solenoid valve 7 connects the first outer delivery pipe 11, the outlet of peak concentration waste water working storage 4 is connected in parallel to the 3rd solenoid valve 8, the 4th solenoid valve 9 and the 5th solenoid valve 10, the other end of the 3rd solenoid valve 8 is connected with a sample leaving device 5, perhaps also can be connected to a plurality of sample leaving devices 5, the other end that the other end of the 4th solenoid valve 9 connects second outer delivery pipe 12, the five solenoid valves 10 is connected with outer sampling pipe 13; The action of intelligent controller 14 control sampling of wastewater peristaltic pumps 2, first solenoid valve 6, second solenoid valve 7, the 3rd solenoid valve 8, the 4th solenoid valve 9 and the 5th solenoid valve 10, and the signal of reception COD concentration UV measuring unit 3 outputs, intelligent controller 14 is provided with the wireless GPRS module, perhaps also the cdma network module can be set, convenient and long-range environmental monitoring platform carries out the mutual of information.
Described COD concentration UV measuring unit 3 comprises light source, absorption cell and detecting device; Described detecting device can produce the electric signal that characterizes waste water COD content size; Described intelligent controller 14 receives handles the electric signal that detecting device produces, and constantly sends signal to intelligent controller 14.
Connecting pipe central shaft between the described first outer delivery pipe 11, second solenoid valve 7, COD concentration UV measuring unit 3 and 2 outlets of sampling of wastewater peristaltic pump forms the angle of 10 degree successively from low to high with horizontal line, the connecting pipe central shaft between the outlet of described outer sampling pipe 13, the 5th solenoid valve 10 and peak concentration waste water working storage 4 forms the angle of 10 degree successively from low to high with horizontal line.
Described peak concentration waste water working storage and sample leaving device all are installed in the energy-saving refrigerator of low-power consumption of setting, improve the holding time.
The concrete course of work of embodiment monitoring method is as follows:
Steps A, when monitoring periods began, all solenoid valve initial states were in closed condition, open first solenoid valve 6 earlier, extract water sample by sampling of wastewater peristaltic pump 2 and be stored in the peak concentration waste water working storage 4, storage is closed first solenoid valve 6 after finishing, and opens second solenoid valve 7 simultaneously;
Step B, sampling of wastewater peristaltic pump 2 constantly extracts water sample by COD concentration UV measuring unit 3, intelligent controller 14 is monitored detector signal in the COD concentration UV measuring unit 3 constantly, when 14 monitored signal of intelligent controller characterize bigger waste water COD concentration, open the 4th solenoid valve 9 earlier, emptying is stored in the water sample in the peak concentration waste water working storage 4, close the 4th solenoid valve 9 again, close second solenoid valve 7 when opening first solenoid valve 6, extracting current water sample is stored in the peak concentration waste water working storage 4, storage is closed first solenoid valve 6 after finishing, and opens second solenoid valve 7 simultaneously;
Step C, repeating step B finishes until a monitoring periods;
Step D opens the 3rd solenoid valve 8, and the waste water sample in the peak concentration waste water working storage 4 is kept sample to the sample leaving device 5 of sky, and the waste water that keeps sample is the waste water COD peak concentration sample in this monitoring periods, returns steps A and begins new monitoring periods.
When conventional COD online analytical instrument perhaps also can be arranged at the scene, then can open the 5th solenoid valve 10 earlier, a part of water sample is delivered to on-the-spot COD online analytical instrument analyze, when closing the 5th solenoid valve 10, carry out water sample among the step D process that keeps sample afterwards again.
Present embodiment has been realized the continuous monitoring to discharge of wastewater, makes discharge of wastewater unit all can not attack discharging and the discharging that exceeds standard at any time suddenly; In a monitoring periods, only preserve the water sample of waste water COD content maximum, the preservation water sample is few, significantly reduced environmental protection warden or guard's workload, reduced the cost of monitoring greatly, and only need analytical test once just can access the interior maximum COD content value of this monitoring periods, as the monitoring foundation, the supervision effect is more effective with this COD peak value; The low temperature of waste water is preserved and is made monitoring periods to be set at several days, because workload is few, then the lab analysis of waste water water sample test enough draws test result, then can be without the installing analysis testing tool at the blowdown scene, thus can significantly reduce investment construction to field apparatus; Apparatus of the present invention need not to carry out on-the-spot periodic calibrating, correction, have also reduced workload greatly, also realize the easy of monitoring method simultaneously.
Claims (7)
1. the waste water of an energy continuous monitoring COD peak concentration water sample is adopted/sample leaving device, comprise the sampling of wastewater peristaltic pump, COD concentration UV measuring unit, peak concentration waste water working storage, sample leaving device, intelligent controller, the first outer delivery pipe, the second outer delivery pipe, outer inlet tube, outer sampling pipe, first solenoid valve, second solenoid valve, the 3rd solenoid valve, the 4th solenoid valve and the 5th solenoid valve, it is characterized in that: the import of sampling of wastewater peristaltic pump links to each other with the entrance of outer inlet tube with COD concentration UV measuring unit respectively with outlet, the outlet of COD concentration UV measuring unit is connected in parallel to first solenoid valve and second solenoid valve, the other end of first solenoid valve links to each other with the entrance of peak concentration waste water working storage, the other end of second solenoid valve connects the first outer delivery pipe, the outlet of peak concentration waste water working storage is connected in parallel to the 3rd solenoid valve, the 4th solenoid valve and the 5th solenoid valve, the other end of the 3rd solenoid valve is connected with sample leaving device, the other end of the 4th solenoid valve connects the second outer delivery pipe, and the other end of the 5th solenoid valve is connected with outer sampling pipe; The action of intelligent controller control sampling of wastewater peristaltic pump, first solenoid valve, second solenoid valve, the 3rd solenoid valve, the 4th solenoid valve and the 5th solenoid valve, and receiving the signal that COD concentration UV measuring unit is exported, intelligent controller is provided with wireless GPRS module or cdma network module.
2. the waste water of a kind of energy continuous monitoring COD peak concentration water sample according to claim 1 is adopted/sample leaving device, and it is characterized in that: described COD concentration UV measuring unit comprises light source, absorption cell and detecting device; Described detecting device can produce the electric signal that characterizes waste water COD content size; Described intelligent controller receives handles the electric signal that detecting device produces.
3. adopt/sample leaving device according to the waste water of claim 1 or 2 described a kind of energy continuous monitoring COD peak concentration water samples, it is characterized in that: described peak concentration waste water working storage and sample leaving device all are installed in the energy-saving refrigerator of low-power consumption, and described sample leaving device is at least one or more.
4. adopt/sample leaving device according to the waste water of the described a kind of energy continuous monitoring COD peak concentration water sample of claim 3, it is characterized in that: outer sampling pipe is connected with the COD online analytical instrument.
5. adopt/sample leaving device according to the waste water of the described a kind of energy continuous monitoring COD peak concentration water sample of claim 1, it is characterized in that: the connecting pipe central shaft between the described first outer delivery pipe, second solenoid valve, COD concentration UV measuring unit and the outlet of sampling of wastewater peristaltic pump forms the angle of 5-15 degree successively from low to high with horizontal line, the connecting pipe central shaft between the outlet of described outer sampling pipe, the 5th solenoid valve and peak concentration waste water working storage forms the angle of 5-15 degree successively from low to high with horizontal line.
One kind adopt claim 1 to 5 any described a kind of can continuous monitoring the waste water of COD peak concentration water sample adopt/monitoring method that sample leaving device carries out, it is characterized in that may further comprise the steps:
Steps A, when monitoring periods began, all solenoid valve initial states were in closed condition, open first solenoid valve earlier, be stored in the peak concentration waste water working storage by sampling of wastewater peristaltic pump pumps water sample, storage is closed first solenoid valve after finishing, and opens second solenoid valve simultaneously;
Step B, the sampling of wastewater peristaltic pump constantly extracts water sample by COD concentration UV measuring unit, intelligent controller is monitored detector signal in the COD concentration UV measuring unit constantly, when intelligent controller institute monitored signal characterizes bigger waste water COD concentration, open the 4th solenoid valve earlier, emptying is stored in the water sample in the peak concentration waste water working storage, close the 4th solenoid valve again, close second solenoid valve when opening first solenoid valve, extracting current water sample is stored in the peak concentration waste water working storage, storage is closed first solenoid valve after finishing, and opens second solenoid valve simultaneously;
Step C, repeating step B finishes until a monitoring periods;
Step D opens the 3rd solenoid valve, and the waste water sample in the peak concentration waste water working storage is kept sample to the sample leaving device of sky, and the waste water that keeps sample is the waste water COD peak concentration sample in this monitoring periods, returns steps A and begins new monitoring periods.
7. monitoring method according to claim 6, it is characterized in that: as the scene COD online analytical instrument is arranged, then can open the 5th solenoid valve earlier, a part of water sample is delivered to on-the-spot COD online analytical instrument analyze, when closing the 5th solenoid valve, carry out water sample among the step D process that keeps sample afterwards again.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210335789 CN102866123B (en) | 2012-09-12 | 2012-09-12 | Wastewater sampler/sample reserving device capable of continuously monitoring water sample with chemical oxygen demand (COD) concentration peak value |
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| CN 201210335789 CN102866123B (en) | 2012-09-12 | 2012-09-12 | Wastewater sampler/sample reserving device capable of continuously monitoring water sample with chemical oxygen demand (COD) concentration peak value |
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| CN102866123A CN102866123A (en) | 2013-01-09 |
| CN102866123B true CN102866123B (en) | 2013-08-07 |
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| CN 201210335789 Expired - Fee Related CN102866123B (en) | 2012-09-12 | 2012-09-12 | Wastewater sampler/sample reserving device capable of continuously monitoring water sample with chemical oxygen demand (COD) concentration peak value |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105223039A (en) * | 2015-09-28 | 2016-01-06 | 苏州工业园区清源华衍水务有限公司 | A kind of water sample automatic sampling apparatus |
| CN107741342B (en) * | 2017-11-14 | 2023-12-26 | 河南省产品质量监督检验院 | Automatic sampling device for oil loading and unloading |
| CN107907644B (en) * | 2017-11-24 | 2024-03-22 | 江苏海德环境科技有限公司 | COD water sample metering device and method with functions of preventing oxidization and eliminating air interference |
| CN110308016B (en) * | 2019-06-28 | 2020-12-08 | 浙江小桥流水环境科技有限公司 | Multi-parameter analysis sample retention device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5552319A (en) * | 1993-07-20 | 1996-09-03 | Biochem Technology, Inc. | Apparatus and method for monitoring and controlling biological activity in wastewater and controlling the treatment thereof |
| EP1957662A4 (en) * | 2005-11-14 | 2013-06-05 | Predect Ab | Method for monitoring water quality |
| 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 |
| CN101493471B (en) * | 2008-01-25 | 2013-07-17 | 衣学文 | Water sample on-line monitoring and overproof sample holding apparatus and operation method thereof |
| CN201251568Y (en) * | 2008-08-26 | 2009-06-03 | 上海雷磁环保工程有限公司 | Wastewater on-line monitoring and sampling system |
| CN102435462A (en) * | 2011-09-21 | 2012-05-02 | 东南大学 | Intelligent waste water sampling control system and sampling control method thereof |
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