CN104569455A - Water quality monitoring method - Google Patents
Water quality monitoring method Download PDFInfo
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- CN104569455A CN104569455A CN201410856164.4A CN201410856164A CN104569455A CN 104569455 A CN104569455 A CN 104569455A CN 201410856164 A CN201410856164 A CN 201410856164A CN 104569455 A CN104569455 A CN 104569455A
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Abstract
The invention relates to a water quality monitoring method which comprises the following steps: (A1), a control unit controls a sampling period, the sampling period starts, a water sample to be detected is continuously and uninterruptedly collected from a sampling port to a mixed unit; (A2), the sampling period ends, the control unit controls to stop sampling while receiving high liquid level and low liquid level signals, the water sample to be detected reaches a high liquid level point, the control unit gives out a signal to enable the water sample to be detected of the mixed unit to be transferred to a buffer unit; (A3), the water sample to be detected is subjected to homogenizing and mixing of the buffer unit, the control unit receives the high liquid level and low liquid level signals, the water sample to be detected reaches a high liquid level point, the water sample to be detected of the buffer unit is output to an analytical unit to be analyzed; (A4), the analytic unit analyzes the water sample to be detected, if the analysis result conform to related provisions, then the water sample to be detected is discharged through a drainage valve. The water quality monitoring method has the advantages of high reliability and good representativeness.
Description
Technical field
The present invention relates to monitoring water quality on line field, particularly a kind of water sample mixes the device and method of collection continuously.
Background technology
In monitoring water quality on line industry, water quality monitoring system is made up of water sampling unit, instrumental analysis unit, Data acquisition and transmit unit and Surveillance center four part.Wherein, water sampling unit many employings self-priming pump or submersible pump, minority adopts peristaltic pump to sample, and its water sample supplies water to after once filtering settling pit or sample cup, after mechanical homogeneous or ultrasound wave homogenize, is analyzed by instrumental analysis unit.In general, water quality monitoring system needs per hour or every two hours provides the indices data of monitored water quality, and the mode generally adopted at present carried out water sampling every 1 or 2 hour exactly, and water sampling generally completes within a few minutes.Therefore, in current water quality monitoring system, water sampling generally adopts batch (-type) sampling pattern, its analysis result only represents the water sample concentration in the time period (a few minutes) of water sampling, if have water sample or other undesirable water samples of the row's of stealing content overproof within the time period not gathering water sample, all can not monitor.That is, the average water sample concentration of (as two hours) in one period of cycle can not be reflected, lack representative, the actual nature of water quality can not be monitored.
Summary of the invention
In order to solve the deficiency in above-mentioned prior art, the invention provides the water quality monitoring method that a kind of reliability is high, representative good.
A kind of water quality monitoring method, comprises the following steps:
(A1) control module controls the sampling period, and in the sampling period, uninterrupted sampling continuous from sample tap water sample to be measured is to mixed cell;
(A2) described mixed cell arranges high and low liquid level, at the end of the sampling period, described control module receives described high and low liquid level signal, and water sample to be measured arrives high liquid level point, control module provides signal, and the water sample to be measured of mixed cell is transferred to buffer unit;
(A3) described buffer unit arranges high and low liquid level, described water sample to be measured is through the homogeneous of described buffer unit, mixing, described control module receives described high and low liquid level signal, and water sample to be measured arrives high liquid level point, and the water sample to be measured of buffer unit is outputted to analytic unit analysis;
(A4) described analytic unit is analyzed described water sample to be measured, if analysis result water quality meets relevant regulations, is then discharged by described draining valve by the water sample of buffer unit; If find that there is index to there is the phenomenon that exceeds standard, then export water sample and keep sample to the unit that keeps sample.
Further, in described step (A2), if described control module receives treat that water sample liquid level is for arriving high liquid level (HLL), then by the draining valve of described mixed cell, water sample is emptying, resampling.
Further, after described step (A2) terminates, continue repeating said steps (A1).
Further, described water quality monitoring method also comprises the dilution step of water sample to be measured:
(B1) control module provides dilution order, opens buffer unit draining valve, closes draining valve while low liquid level signal disappears;
(B2) open buffer unit tap water water intaking valve, close tap water water intaking valve while high liquid level signal occurs, buffer unit homogeneous, exports to analytic unit.
Further, described water quality monitoring method also comprises scaling step:
(C1) control module provides focus command, opens buffer unit draining valve, closes draining valve while high liquid level signal disappears;
(C2) open calibration pump, add set amount mark liquid toward buffer unit;
(C3) close calibration pump, buffer unit homogeneous, exports to analytic unit.
Further, described water quality monitoring method also comprises cleaning step:
(D1) control module provides signal, and open the rinse water interface that described mixed cell or buffer unit are arranged, tap water enters, and the water after cleaning is discharged by the draining valve of respective unit.
The present invention compared with prior art, has following beneficial effect:
1, realize uninterruptedly adopting water continuously, there is not sampling blind area, water sample has more representativeness.
2, realize automatically mixing sampling, by the continuous working of mixed cell, buffer unit, analytic unit, while realizing this water sample analysis, the uninterrupted sampling of water sample next time.
3, water quality monitoring method flow process provided by the invention is simple, controls simple.
4, there is self-cleaning, from air emptying function, greatly reduce maintenance cost, extend maintenance period.
5, water sample can be realized to dilute at high proportion, also can use in high chlorine, high concentration occasion.
Accompanying drawing explanation
Fig. 1 is a kind of schematic flow sheet mixing the method for sampling.
Embodiment
Embodiment 1
Refer to Fig. 1, the present embodiment provides a kind of water quality monitoring method, comprises the following steps:
(A1) control module controls the sampling period, and in the sampling period, uninterrupted sampling continuous from sample tap water sample to be measured is to mixed cell;
(A2) described mixed cell arranges high and low liquid level, at the end of the sampling period, described control module receives described high and low liquid level signal, and water sample to be measured arrives high liquid level point, control module provides signal, and the water sample to be measured of mixed cell is transferred to buffer unit;
Water sample to be measured does not arrive high liquid level, then illustrate in this sampling process seepage to occur or sampling process goes wrong, by the draining valve of mixed cell, water sample is emptying, resampling.
(A3) described buffer unit arranges high and low liquid level, described water sample to be measured is through the homogeneous of described buffer unit, mixing, described control module receives described high and low liquid level signal, and water sample to be measured arrives high liquid level point, and the water sample to be measured of buffer unit is outputted to analytic unit analysis;
(A4) described analytic unit is analyzed described water sample to be measured, if analysis result water quality meets relevant regulations, is then discharged by described draining valve by the water sample of buffer unit; If find that there is index to there is the phenomenon that exceeds standard, then export water sample and keep sample to the unit that keeps sample.
Further, after described step (A2) terminates, continue repeating said steps (A1).
Further, described water quality monitoring method also comprises the dilution step of water sample to be measured:
(B1) control module provides dilution order, opens buffer unit draining valve, closes draining valve while low liquid level signal disappears;
(B2) open buffer unit tap water water intaking valve, close tap water water intaking valve while high liquid level signal occurs, buffer unit homogeneous, exports to analytic unit.
Further, described water quality monitoring method also comprises scaling step:
(C1) control module provides focus command, opens buffer unit draining valve, closes draining valve while high liquid level signal disappears;
(C2) open calibration pump, add set amount mark liquid toward buffer unit;
(C3) close calibration pump, buffer unit homogeneous, exports to analytic unit.
Further, described water quality monitoring method also comprises cleaning step:
When mixed cell or buffer unit are in idle condition, control module provides signal, and open the rinse water interface that described mixed cell or buffer unit are arranged, tap water enters, and the water after cleaning is discharged by the draining valve of respective unit.
Control module controls sample frequency, a sampling period, mixed cell by the pump compared with large discharge by water sampling to nearly mixed cell place, then with the pump compared with low discharge by water sampling in mixed cell, connect draining valve compared with the pump of low discharge, unnecessary water sample is discharged from draining valve; Mixed cell is sampled continuously, uninterruptedly; Sampling period terminates, and control module receives the high and low liquid level signal of mixed cell, judges whether to analyze this water sample; Control module gives the signal of analysis water-like, via pump, water sample is transferred to buffer unit, and after homogeneous, mixing, export water sample to be measured for analysis meter analysis, mixed cell continues the water sample collection work in next cycle simultaneously.
If water quality indices all conforms with the regulations after water sample analysis, do not find the phenomenon that exceeds standard, then the water sample of buffer unit is disposed to sample tap by draining valve; If there is index exceeding standard phenomenon in discovery water quality, then the water sample of buffer unit is transferred to the unit that keeps sample.
The beneficial effect that the present invention has compared to prior art: realize uninterruptedly adopting water continuously, there is not sampling blind area, water sample has more representativeness; Realize automatically mixing sampling, by two unit, realize while this instrument measurement, next time the lasting preparation of analysis water-like; There is self-cleaning, from air emptying function, reduce the maintenance cost of device, extend maintenance period; Increase and to exceed standard unit, the function that keeps sample of the sample that realizes exceeding standard; Increase dilution unit, realize the analysis of high concentration water sample, it is more accurate that water sample is measured.
Embodiment 2
The present embodiment is the application examples of embodiment 1.
Present embodiments provide a kind of water quality monitoring method, comprise the following steps:
(A1) control module controls the sampling period is 1 hour, sampling period starts, water sample to be measured is taken near mixed cell from thief hatch by the self-priming pump compared with large discharge by mixed cell, again by compared with the peristaltic pump of low discharge by water sampling to be measured to mixed cell, meanwhile, unnecessary water sample is discharged from the draining valve connecting described peristaltic pump;
(A2) mixed cell is sampled continuously, uninterruptedly within the sampling period, the sampling period of 1 hour terminates, described control module receives the high and low liquid level signal that described mixed cell is arranged, water sample to be measured arrives high liquid level point, described control module provides signal, and the water sample to be measured of described mixed cell is transferred to buffer unit;
Water sample transfer to be measured terminates, and described control module controls the sampling that described mixed cell starts next cycle.
(A3) described water sample to be measured is through the homogeneous of described buffer unit, mixing, and the water sample to be measured of buffer unit is outputted to analytic unit analysis;
If water sample excessive concentration to be measured, then described control module controls to carry out homogeneous after dilution step, mixing, exports analytic unit analysis to.
Described buffer unit is provided with refluxing opening, the water sample unnecessary to be measured exporting analytic unit to can be returned.
(A4) analytic unit analysis water-like, after analytic process terminates, have index to exceed standard in analysis result display water sample, described control module provides signal, water sample is transferred to the unit that keeps sample via peristaltic pump by the water sample of buffer unit, and unnecessary water sample is discharged by the draining valve of buffer unit.
Above-mentioned embodiment should not be construed as limiting the scope of the invention.Key of the present invention is: realize water sample to be measured in water quality monitoring system continuous, uninterruptedly sample.Without departing from the spirit of the invention, all should fall within protection scope of the present invention any type of change that the present invention makes.
Claims (6)
1. a water quality monitoring method, comprises the following steps:
(A1) control module controls the sampling period, and in the sampling period, uninterrupted sampling continuous from sample tap water sample to be measured is to mixed cell;
(A2) sampling period terminates, described control module controls described mixed cell and stops sampling, described control module receives the high and low liquid level signal on described mixed cell, water sample to be measured arrives high liquid level point, then control module provides signal, and the water sample to be measured of mixed cell is transferred to buffer unit;
(A3) described water sample to be measured is through the homogeneous of described buffer unit, mixing, described control module receives the high and low liquid level signal on described buffer unit, water sample to be measured arrives high liquid level point, and the water sample to be measured of buffer unit is outputted to analytic unit analysis;
(A4) described analytic unit is analyzed described water sample to be measured, if analysis result water quality meets relevant regulations, is then discharged by described draining valve by the water sample of buffer unit; If find that there is index to there is the phenomenon that exceeds standard, then export water sample and keep sample to the unit that keeps sample.
2. water quality monitoring method according to claim 1, it is characterized in that: in described step (A2), if described control module receives water sample liquid level to be measured and do not arrive high liquid level (HLL), then by the draining valve of described mixed cell, water sample is emptying, resampling.
3. water quality monitoring method according to claim 1, is characterized in that: after described step (A2) terminates, and continues repeating said steps (A1).
4. water quality monitoring method according to claim 1, is characterized in that: described water quality monitoring method comprises the dilution step of water sample to be measured further:
(B1) control module provides dilution order, opens buffer unit draining valve, closes draining valve while low liquid level signal disappears;
(B2) open buffer unit tap water water intaking valve, close tap water water intaking valve while high liquid level signal occurs, buffer unit homogeneous, exports to analytic unit.
5. water quality monitoring method according to claim 1, is characterized in that: described water quality monitoring method comprises scaling step further:
(C1) control module provides focus command, opens buffer unit draining valve, closes draining valve while high liquid level signal disappears;
(C2) open calibration pump, add set amount mark liquid toward buffer unit;
(C3) close calibration pump, buffer unit homogeneous, exports to analytic unit.
6. water quality monitoring method according to claim 1, is characterized in that: described water quality monitoring method comprises cleaning step further:
(D1) control module provides signal, and open the rinse water interface that described mixed cell or buffer unit are arranged, tap water enters, and the water after cleaning is discharged by the draining valve of respective unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410856164.4A CN104569455A (en) | 2014-12-31 | 2014-12-31 | Water quality monitoring method |
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| CN201410856164.4A CN104569455A (en) | 2014-12-31 | 2014-12-31 | Water quality monitoring method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105466982A (en) * | 2015-12-31 | 2016-04-06 | 聚光科技(杭州)股份有限公司 | Method for detecting heavy metal in water |
| CN105527128A (en) * | 2015-12-31 | 2016-04-27 | 聚光科技(杭州)股份有限公司 | Automatic water quality sampling device and method |
| CN106840764A (en) * | 2016-12-30 | 2017-06-13 | 聚光科技(杭州)股份有限公司 | The automatic method of sampling of water quality and device |
| CN107966411A (en) * | 2017-12-27 | 2018-04-27 | 北京东方园林环境股份有限公司 | A kind of miniature automatic water quality monitoring quality control system and mark-on reclaims method |
| CN108333317A (en) * | 2017-12-30 | 2018-07-27 | 聚光科技(杭州)股份有限公司 | The monitoring method in random exhaust emission source |
| CN108398537A (en) * | 2018-05-30 | 2018-08-14 | 中国城市规划设计研究院 | Urban water supply mobile laboratory with online water quality monitoring function and its working method |
| CN108827713A (en) * | 2018-08-17 | 2018-11-16 | 郑州富铭环保科技股份有限公司 | Water sample mixing system and method is adopted for the automatic measuring station of outdoor water quality |
| CN113188834A (en) * | 2021-06-11 | 2021-07-30 | 江苏汇环环保科技有限公司 | Automatic water quality sampler suitable for multiple types of water pollution sources |
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| CN101324487A (en) * | 2007-06-13 | 2008-12-17 | 赵铭辉 | Quantitative sampling and dilution analysis apparatus |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466982A (en) * | 2015-12-31 | 2016-04-06 | 聚光科技(杭州)股份有限公司 | Method for detecting heavy metal in water |
| CN105527128A (en) * | 2015-12-31 | 2016-04-27 | 聚光科技(杭州)股份有限公司 | Automatic water quality sampling device and method |
| CN105466982B (en) * | 2015-12-31 | 2019-02-05 | 聚光科技(杭州)股份有限公司 | Heavy metal detection method in water |
| CN106840764A (en) * | 2016-12-30 | 2017-06-13 | 聚光科技(杭州)股份有限公司 | The automatic method of sampling of water quality and device |
| CN107966411A (en) * | 2017-12-27 | 2018-04-27 | 北京东方园林环境股份有限公司 | A kind of miniature automatic water quality monitoring quality control system and mark-on reclaims method |
| CN108333317A (en) * | 2017-12-30 | 2018-07-27 | 聚光科技(杭州)股份有限公司 | The monitoring method in random exhaust emission source |
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| CN108827713A (en) * | 2018-08-17 | 2018-11-16 | 郑州富铭环保科技股份有限公司 | Water sample mixing system and method is adopted for the automatic measuring station of outdoor water quality |
| CN113188834A (en) * | 2021-06-11 | 2021-07-30 | 江苏汇环环保科技有限公司 | Automatic water quality sampler suitable for multiple types of water pollution sources |
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Application publication date: 20150429 |