CN102866123A - 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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- CN102866123A CN102866123A CN2012103357897A CN201210335789A CN102866123A CN 102866123 A CN102866123 A CN 102866123A CN 2012103357897 A CN2012103357897 A CN 2012103357897A CN 201210335789 A CN201210335789 A CN 201210335789A CN 102866123 A CN102866123 A CN 102866123A
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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 the fast development of economy, environmental protection more and more is subject 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 New UV Spectrophotometric 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 is high, analyzes the data obtained 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 so that the result of monitoring is not active data the most; Required reagent cost is higher, so the cost of once analyzing is just higher, if monitor once at least according to present national requirements each hour, and monitoring cost costliness too then; Instrument for the scene also needs regularly to calibrate in addition.New UV Spectrophotometric 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 on line real-time monitoring truly, and need not extra chemical reagent.But New UV Spectrophotometric 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 so that measurement result is inaccurate.
This shows, the system monitoring cost that adopts potassium dichromate method to monitor in the monitoring system of waste water COD at present is expensive, the monitoring gap periods is longer, possibility is provided for " surprise attack steal row " of some enterprises in the realization short time, thereby so that monitoring effect is effective not; Adopt the system of New UV Spectrophotometric 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 expensive in the existing effluent monitoring system in order to overcome, can not effectively avoid the high concentration discharging of illegal enterprise in the realization short time so that the problem that Monitoring Data lost efficacy, and the problem that adopts New UV Spectrophotometric UV monitoring instrument often to proofread and correct and to demarcate, and the problem that the monitoring method workload is large, 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, the first solenoid valve, the 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 the first solenoid valve and the second solenoid valve, the other end of the first solenoid valve links to each other with the entrance of peak concentration waste water working storage, the other end of the 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 connects with outer sampling pipe; The action of intelligent controller control sampling of wastewater peristaltic pump, the first solenoid valve, the 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; The electric signal that described intelligent controller reception ﹠ disposal 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, the 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 the first solenoid valve, be stored in the peak concentration waste water working storage by sampling of wastewater peristaltic pump pumps water sample, storage is closed the first solenoid valve after finishing, and opens simultaneously the second solenoid valve;
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, during the larger waste water COD concentration of the characterization of monitoring when intelligent controller, open first the 4th solenoid valve, the emptying water sample that is stored in the peak concentration waste water working storage, close again the 4th solenoid valve, close the second solenoid valve when opening the first solenoid valve, extracting current water sample is stored in the peak concentration waste water working storage, storage is closed the first solenoid valve after finishing, and opens simultaneously the second solenoid valve;
Step C, repeating step B is until a monitoring periods end;
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, such as the scene COD online analytical instrument is arranged, then can open first the 5th solenoid valve, a part of water sample is delivered to on-the-spot COD online analytical instrument analyze, when closing the 5th solenoid valve, carry out again afterwards water sample among the step D process that keeps sample.
The monitoring periods of monitoring method of the present invention can also carry out remote setting by the environmental monitoring platform, the efforts at environmental protection personnel can carry out by the environmental monitoring platform modification in cycle 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 notice environmental protection staff is further analyzed sample retrieval, test.
The present invention has following technique effect:
Constantly continuous institute's waste discharge is monitored of apparatus of the present invention stolen row, discharge beyond standards so that discharge of wastewater unit can realize surprise attack 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, greatly reduced environmental protection warden or guard's workload, reduced greatly the cost of monitoring, 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 greatly reduce the investment construction of field apparatus; Apparatus of the present invention need not regularly to demarcate and calibrate in addition, have also greatly 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-enters 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-the first solenoid valve, 7-the second solenoid valve, 8-the 3rd solenoid valve, 9-the 4th solenoid valve, 10-the 5th solenoid valve, 11-the first outer delivery pipe, 12-the 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, the first solenoid valve 6, the 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 the first solenoid valve 6 and the second solenoid valve 7, the other end of the first solenoid valve 6 links to each other with the entrance of peak concentration waste water working storage 4, the other end of the 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 the second outer delivery pipe 12, the five solenoid valves 10 connects with outer sampling pipe 13; The action of intelligent controller 14 control sampling of wastewater peristaltic pumps 2, the first solenoid valve 6, the 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; The electric signal that described intelligent controller 14 reception ﹠ disposal detecting devices produce, and constantly send signal to intelligent controller 14.
Connecting pipe central shaft between the described first outer delivery pipe 11, the 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 specific works process of embodiment monitoring method is as follows:
Steps A, when monitoring periods began, all solenoid valve initial states were in closed condition, open first the first solenoid valve 6, 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 the first solenoid valve 6 after finishing, and opens simultaneously the second solenoid valve 7;
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, during the larger waste water COD concentration of the characterization of monitoring when intelligent controller 14, open first the 4th solenoid valve 9, the emptying water sample that is stored in the peak concentration waste water working storage 4, close again the 4th solenoid valve 9, close the second solenoid valve 7 when opening the first solenoid valve 6, extracting current water sample is stored in the peak concentration waste water working storage 4, storage is closed the first solenoid valve 6 after finishing, and opens simultaneously the second solenoid valve 7;
Step C, repeating step B is until a monitoring periods end;
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 first the 5th solenoid valve 10, 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 again afterwards water sample among the step D process that keeps sample.
Present embodiment has been realized the continuous monitoring to discharge of wastewater, so that discharge of wastewater unit all can not attack discharging and discharge beyond standards 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, greatly reduced environmental protection warden or guard's workload, reduced greatly the cost of monitoring, 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 so that monitoring periods can be set as 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 greatly 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 greatly workload, 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, the first solenoid valve, the 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 the first solenoid valve and the second solenoid valve, the other end of the first solenoid valve links to each other with the entrance of peak concentration waste water working storage, the other end of the 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 connects with outer sampling pipe; The action of intelligent controller control sampling of wastewater peristaltic pump, the first solenoid valve, the 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; The electric signal that described intelligent controller reception ﹠ disposal detecting device produces.
3. the waste water of described a kind of energy continuous monitoring COD peak concentration water sample is adopted/sample leaving device according to claim 1 and 2, 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. the waste water of described a kind of energy continuous monitoring COD peak concentration water sample is adopted/sample leaving device according to claim 3, and it is characterized in that: outer sampling pipe is connected with the COD online analytical instrument.
5. the waste water of described a kind of energy continuous monitoring COD peak concentration water sample is adopted/sample leaving device according to claim 1, it is characterized in that: the connecting pipe central shaft between the described first outer delivery pipe, the 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 the first solenoid valve, be stored in the peak concentration waste water working storage by sampling of wastewater peristaltic pump pumps water sample, storage is closed the first solenoid valve after finishing, and opens simultaneously the second solenoid valve;
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, during the larger waste water COD concentration of the characterization of monitoring when intelligent controller, open first the 4th solenoid valve, the emptying water sample that is stored in the peak concentration waste water working storage, close again the 4th solenoid valve, close the second solenoid valve when opening the first solenoid valve, extracting current water sample is stored in the peak concentration waste water working storage, storage is closed the first solenoid valve after finishing, and opens simultaneously the second solenoid valve;
Step C, repeating step B is until a monitoring periods end;
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: such as the scene COD online analytical instrument is arranged, then can open first the 5th solenoid valve, a part of water sample is delivered to on-the-spot COD online analytical instrument analyze, when closing the 5th solenoid valve, carry out again afterwards water sample among the step D process that keeps sample.
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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 |
CN107741342A (en) * | 2017-11-14 | 2018-02-27 | 河南省产品质量监督检验院 | A kind of oil loading automatic sampling device |
CN107907644A (en) * | 2017-11-24 | 2018-04-13 | 江苏海德环境科技有限公司 | With anti-oxidation and exclusion air interference COD water samples metering device and method |
CN110308016A (en) * | 2019-06-28 | 2019-10-08 | 浙江小桥流水环境科技有限公司 | Multi parameter analysis sample leaving device |
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