CN102175825A - Biological monitoring system and method for monitoring sudden change of high-turbidity and low-temperature water quality - Google Patents

Biological monitoring system and method for monitoring sudden change of high-turbidity and low-temperature water quality Download PDF

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Publication number
CN102175825A
CN102175825A CN2010106206870A CN201010620687A CN102175825A CN 102175825 A CN102175825 A CN 102175825A CN 2010106206870 A CN2010106206870 A CN 2010106206870A CN 201010620687 A CN201010620687 A CN 201010620687A CN 102175825 A CN102175825 A CN 102175825A
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water
monitoring
turbidity
biological
signal
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邵泽舫
李红敏
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YANTAI KAISI ENVIRONMENTAL TECHNOLOGY Co Ltd
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YANTAI KAISI ENVIRONMENTAL TECHNOLOGY Co Ltd
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Abstract

The invention discloses a biological monitoring system and a biological monitoring method for monitoring a sudden change of high-turbidity and low-temperature water quality. The system is characterized by comprising a water pretreatment system, a signal acquisition and analysis system and a signal transmission system; by internally-designed turbidity-removing and temperature-raising measurements, the technology and the system can ensure that the monitored water is a normal living environment for an indicating creature under a high-turbidity and low-temperature condition; on a basis of detecting and analyzing biologic behavior, on-line monitoring for comprehensive toxicity of the water can be realized; and according to a built-in standard change trend of the biologic behavior, the behavior change of the indicating creature is analyzed, the biologic behavior in the monitored water is ensured to be true, the change condition of the water quality is accurately represented, and the requirements of different monitoring departments for a stable long-time monitoring are met.

Description

The biological monitoring system and the monitoring method that are used for high turbidity, low temperature water quality mutation
Technical field
The invention belongs to the environmental monitoring technology field, specifically relate to a kind of biological monitoring system and monitoring method that can be applied to high turbidity, low temperature water quality mutation.
Background technology
Much more very the widespread use of chemicals brings the serious problems of environmental pollution, simultaneously the same hidden danger that exists in chemical substance production, transportation and storage process.Poisonous and hazardous chemical not only can cause great harm to the mankind to the accidental release of water environment, the existence of biology is formed threaten, and more can destroy the aquatic ecosystem balance.Can be in moment or the short time a large amount of exhaust emission materials of water body burst Pollution accident cause severe contamination and destruction to water environment, cause heavy losses for the people's life and national wealth.It is different from general environmental pollution, has characteristics such as generation is unexpected, diffusion is rapid, harm is serious, and some even pollutant are failed to understand.In view of the present situation that state, inside and outside water body burst Pollution accident take place frequently, the online biological monitoring technology of water quality of carrying out at water body burst Pollution accident is in flourish period.
Biological behavior reaction is biological under the situation that environment changes, the biological adaptation mechanism of self taking in order to keep homoiostasis.By the adjusting of self behavioral mechanism, hydrobiont keeps the stable of internal milieu in a short time, and progressively conforms, and avoids the contaminant water environment that health is caused acute injury to a great extent.Therefore, to change the online biological monitoring of carrying out the sudden variation of water body be effective comprehensive water-body toxicity monitoring means to the behavior by monitoring bio.At present, the online biological monitoring technology based on bioluminescence behavior and motor behavior variation has appearred, comprising Microtox toxotest system, plane camera monitoring system, MFB monitoring system and BEWs monitoring system both at home and abroad.Microtox toxotest system can only carry out periodic monitoring in key point, can not realize the real-time monitoring of water body; The plane camera system can change by the behavior of real time record biology in a plane, changes but lack three dimensions, can not contain the rule trend that biological behavioral ecology changes; The MFB monitoring system can reach the purpose of on-line monitoring by regular variation of monitoring bio behavior, but can not reflect accurately that the motor behavior of different times biological subject changes; BEWs changes by the biological behavior of on-line monitoring to realize monitoring water quality on line, but this system needs external water flow control system, delays to monitor the real-time monitoring time of water body, simultaneously, this system can not well solve water body contrast problem, is difficult to satisfy long-term on-line monitoring needs.
Simultaneously, because the latitude difference of living in different basins, the regional ground flora coverage rate difference of flowing through can cause the greatest differences of different basins water body in Various Seasonal turbidity and temperature.Between the wet season of the Yangtze river basin, the highest meeting of water body turbidity reaches 2000NTU, but relies on reservoir and lake to maintain below the 20NTU as the water body turbidity of water head site throughout the year; And to the north of the Changjiang river regional water body the whole year temperature variation between 0-28 ℃, and southern province, as Guangdong, the water temperature on ground such as Fujian changes and is between the 10-30.Therefore, in based on the online biological monitoring technique construction of the water body of bioanalysis process, water body turbidity and temperature variation should be considered biogenic influence, otherwise can directly cause monitoring result unusual.Above-mentioned biological monitoring technology causes in application process because all there is not effective measure at water body turbidity and temperature variation, makes indicator organism be subjected to the influence of envirment factor too much, has directly influenced the operation stability of monitoring technology and system.
In conjunction with the requirement of " People's Republic of China's surface water standard " GB3838-2002, the water body physical and chemical factor is as temperature, turbidity, pH, dissolved oxygen DO, ammonia nitrogen, COD, total phosphorus, physical and chemical factors such as total nitrogen, except that the variation of temperature and turbidity is not clearly stipulated, the physical and chemical index of all the other water bodys all has clear and definite ultimate value, and therefore, the online biological monitoring technology that can adapt to high turbidity and low temperature water body can satisfy the requirement of GB3838-2002.Be difficult to reach under the situation about requiring with existing online biological monitoring technology in classic method, press for and develop the online biological monitoring technology and the system that can be applied to high turbidity, the sudden variation of low temperature water quality that moves efficient, economic, accurate and steady in a long-term with the online early warning of satisfying the sudden variation of different water qualities.
Summary of the invention
The objective of the invention is to overcome the defective that prior art exists, a kind of online biological monitoring system and monitoring method that can be applied to high turbidity, the sudden variation of low temperature water quality is provided.
Technical scheme of the present invention is: a kind of biological monitoring system that is used for high turbidity, low temperature water quality mutation, characteristics be, it comprises water body pretreatment system, signals collecting and analytic system and signal transmission system, wherein,
The water body pretreatment system comprises: the water body filtration unit of bringing the mouth of a river into, water delivering orifice place at the water body filtration unit connects the water body heating arrangement by pipeline, the other end of water body heating arrangement connects water body mean allocation system, and water body mean allocation system is provided with biology sensor;
Signals collecting and analytic system comprise signal acquiring system and Signal Analysis System, and signal acquiring system is connected with biology sensor by circuit, and signal acquiring system is connected with Signal Analysis System, and Signal Analysis System is connected with signal transmission system.
A kind of monitoring method of utilizing above-mentioned biological monitoring system comprises the following steps:
A) cultivation of indicator organism and selection;
B) utilize the water body pretreatment system to carry out the water body pre-service;
C) adopt biology sensor to gather biological behavior signal;
D) the biological behavior signal that biology sensor is collected is sent to Signal Analysis System by signal acquiring system, carries out analysis and judgement;
E) result of Fen Xiing is sent to the supvr by signal transmission system.
Compared with the prior art, the invention provides a kind of more convenient, quick and can be applied to high turbidity accurately, the online biological monitoring technology of the sudden variation of low temperature water quality, this technology and system can be by the turbidity removals of inherent design, heat measure, guarantee that monitored water body is high turbidity, the normal existence environment of indicator organism under the low temperature conditions, on based on biological behavior detection analysis basis, can satisfy the on-line monitoring of comprehensive water-body toxicity, and the standard biological behavior variation tendency built-in according to system, the behavior of analyzing indicator organism changes, guarantee that biological behavior is true in the monitored water body, react the change of water quality situation accurately, satisfy the stability running needs of different monitoring department long term monitoring.
Below in conjunction with accompanying drawing and example the present invention is elaborated.
Description of drawings
Fig. 1: the structural representation of biological monitoring of the present invention system:
Fig. 2: the structural representation of the water body filtration unit among the present invention;
Fig. 3: the structural representation of the water body heating arrangement among the present invention;
Fig. 4: different turbidity water bodys are to biological behavioral implications;
Fig. 5: the different temperatures water body is to biological behavioral implications;
Fig. 6: different turbidity water bodys are through pretreated change of water quality;
Fig. 7: the different temperatures water body is through pretreated change of water quality;
Fig. 8: the monitoring result synoptic diagram under the water body burst Pollution.
The explanation of accompanying drawing drawing:
1 water inlet, 2 sealing valves, 3 water body filtration units, 4 water body heating arrangements, 5 water body mean allocation systems, 6 biology sensors, 8 water body overflow mechanisms, 9 water delivering orifices, 10 signal acquiring systems, 11 Signal Analysis Systems, 12 signal transmission systems, 13 water distributors, 14 filter sands, 15 connect water pipe, 16 water delivering orifices (17 backwashing waters inlet), the outlet of 18 backwashing waters, 19 back flush control device, 20 solenoid valves, 21 Filter columns, 22 water delivering orifices, 23 water body well heaters, 24 well heater stationary installations, 25 water inlets, 26 heater power sources, 27 temperature inductors.
Embodiment
One, indicator organism is cultivated and selects
At the characteristics of water quality burst Pollution, the biology that can select comprises fresh water hydrobiont and seawater hydrobiont.Wherein, limnobios and seawater hydrobiont are mainly selected the strong fish of kinetic force, arthropod class, the end annelids etc. of dwelling, during fish are selected, the main individuality of selecting is little, the kind that susceptibility is strong, the arthropod class mainly selects Magna class and shrimps etc. to have the strong animal of kinetic force, the end annelids of dwelling to comprise water silk earthworm etc.
The selection of above-mentioned biology is mainly the adult biology after cultivating under standard conditions.In addition,, also can carry out standard conditions then and cultivate the above biology of three generations, carry out online biological monitoring by gathering local above-mentioned species as indicator organism at the water body burst Pollution accident monitoring of zones of different.
Two, carry out the water body pre-service
As shown in Figure 1, this biological monitoring system comprises water body pretreatment system, signals collecting and analytic system and signal transmission system, wherein,
The water body pretreatment system comprises: the water body filtration unit 3 of bringing the mouth of a river 1 into, water delivering orifice place at water body filtration unit 3 connects water body heating arrangement 4 by pipeline (being provided with sealing valve 2 on the pipeline), the other end of water body heating arrangement 4 connects water body mean allocation system 5, on the pipeline of water body mean allocation system 5, be provided with a plurality of water distributors 13 and biological thing sensor 6, be connected with water body overflow mechanism 8 and water delivering orifice 9 on the biology sensor 6.
Signals collecting and analytic system comprise signal acquiring system 10 and Signal Analysis System 11, and signal acquiring system 10 is connected with biology sensor 6 by circuit, signal acquiring system 10 be connected with signal transmission system 12 again after Signal Analysis System 11 is connected.
Referring to Fig. 2, water body filtration unit 3 can be composed in series by a plurality of Filter columns 21 (glass fibre jar), the filter sand 14 that different size is arranged in the Filter column 21, be communicated with by connecting water pipe 15 between the adjacent Filter column 21, afterbody Filter column 21 is provided with water delivering orifice 16 and communicates with the pipeline of water body heating arrangement 4, is provided with solenoid valve 20 in the pipeline that connects water pipe 15.On the water body filtration unit 3 back purge system can be set, as shown in the figure, back purge system comprises backwashing water inlet 17 (being water delivering orifice 16), backwashing water outlet 18 and back flush control device 19, its effect is a reply ultra body, reduce the water body turbidity, avoid the too high influence of water body turbidity biology.
Shown in Figure 3 is the structure of water body heating arrangement 4, form by water inlet 25, water delivering orifice 22, water body well heater 23, well heater stationary installation 24, heater power source 26 and temperature inductor 27, water inlet 25 communicates with the water delivering orifice 16 of water body filtration unit 3, and water delivering orifice 22 links to each other with the pipeline of water body mean allocation system 5.
Connect monitored water body by water inlet 1, after sealing valve 2, enter water body filtration unit 3, behind water body heating arrangement 4, enter water body mean allocation system 5, and the biology sensor 6 of flowing through, and by biological behavior mutation analysis water quality condition in the sensor.Through the later water body process water body overflow mechanism 8 of sensor, go out from water delivering orifice 9 overflows.Place the equivalent amount indicator organism in each biology sensor, in observation process, do not give the indicator organism feeding.
Three, the collection analysis of coherent signal
By biology sensor 6, adopt four utmost point impedance principles, carry out the collection of biological behavior in conjunction with biological behavior target signal filter technology, and signal is sent to Signal Analysis System through signal acquiring system, and change and the contrast of embedded biological behavior variation model by biological behavior in the water body, the indicator organism behavior is analyzed, and make water analysis and judgement: normal, unusually, or extremely unusual? the binding signal transmission system realizes the long-range shared of monitoring result again.
Different with the online biological monitoring technology of other water quality, the present invention realizes the online biological monitoring to high turbidity, low temperature water quality at first by rational water body preconditioning technique; Secondly, the invention provides the hyperchannel biology sensor, adopt probability calculation, change of water quality is analyzed, under the higher prerequisite of sensitivity for analysis, guarantee the accuracy of monitoring result, avoid false positive warnings as far as possible; The 3rd, the present invention is in the water volume flow rate control procedure, in order to keep the unanimity of water volume flow rate in the different sensors, adopt the brand-new water volume flow rate control device mean allocation to come water, the influence of having avoided using the current velocity controller operation stability problem in use of peristaltic pump one class to cause to monitoring result.
Experimental example 1
Different turbidity, temperature water body be water body turbidity and variation of temperature to Japan's blue or green Medaka behavior variable effect and after passing through pre-service of the present invention:
The turbidity of water body and temperature are very obvious to the influence of biology, be the quantitative relationship between further clear and definite behavior variation and turbidity and the temperature, and this experimental example has at first been tested the behavioral implications to the blue or green Medaka of Japan of different temperatures, turbidity.On this basis, verified the treatment effect of pretreatment system of the present invention to water body turbidity and temperature.
Indicator organism: Japanese blue or green Medaka, about the long 3cm of body, biology sensor adopts diameter 5cm, and long 5cm size is used 3 tails in each sensor.
Before the experiment beginning, at first the bio-sensor signal to no biological subject makes zero, and begins then in turn by variable concentrations pollutant water body.Mode by the different frequency behavior of formation after fast Flourier (Fast Fourier) conversion shows.Adopt 0,5,10,15,20,25, the water body of 30NTU carries out the influence test of turbidity, adopts 0,5,10,15,20,25,30 ℃ water body to carry out the Temperature Influence test.
The water body turbidity influences the result as shown in Figure 4 to the blue or green Medaka behavior of Japan, and transverse axis is represented exposure duration among the figure, and vertical pivot is represented Japanese blue or green Medaka intensity of performance.
The result shows that in monitoring periods the water body that is lower than 20NTU is not obvious to the blue or green Medaka behavioral implications of Japan, but in the 30NTU water body, the behavior in Japanese blue or green Medaka later stage variation obviously differs from the normal behaviour reaction, produces irregular change, shows that water quality is unusual.
Water temperature influences the result as shown in Figure 5 to the blue or green Medaka behavior of Japan, and transverse axis is represented exposure duration among the figure, and vertical pivot is represented Japanese blue or green Medaka intensity of performance.
The result shows that in monitoring periods the water body that is lower than 5 ℃ is very obvious to the blue or green Medaka behavioral implications of Japan, and especially in 0 ℃ of water body, the Japanese blue or green Medaka less than of surviving was therein just lost capacity in 4 hours.And in being higher than 15 ℃ of water bodys, Japanese blue or green Medaka behavior is normal.
In order to eliminate the influence of different turbidity and temperature water body to monitoring result, water body pretreatment system among the present invention carries out online treatment to the water body of different temperatures and turbidity, result as shown in Figure 6 and Figure 7, transverse axis is represented the water treatment number of times among Fig. 6, vertical pivot is represented turbidity, transverse axis express time among Fig. 7 (minute), vertical pivot represent temperature (℃).
In experiment at the water body turbidity removal, even turbidity reaches more than the 280NTU, after through 3 grades of processing, the water body turbidity also is lower than 20NTU, satisfy the water body environment of biological existence in the online biological monitoring, and in other were handled than the low turbidity water body, some only can reach requirement through 1 grade of processing.
Show that at the water temperature result 2 ℃ water body can satisfy Japanese blue or green Medaka existence requirement, and reached stable after 5 minutes after through online heating in 2 minutes.Even heat for a long time again, because the temperature control system work of heating system can not make the water temperature of processing higher yet, just maintain about 21 ℃, reach the biological existence condition fully.
Experimental example 2
The online biological monitoring that the sudden Methomyl of water body pollutes
Adopting the variable concentrations Methomyl to carry out water body in the case and expose, is 25mL/min by the water volume flow rate of low discharge water volume flow rate automatic controlling system by each biology sensor.Adopt 8 groups of sensors to carry out biological behavioral indicator altogether and change experiment.
Indicator organism: Japanese blue or green Medaka, about the long 3cm of body, biology sensor adopts diameter 5cm, and long 5cm size is used 3 tails in each sensor.
Before the experiment beginning, at first the bio-sensor signal to no biological subject makes zero, and begins then in turn by variable concentrations pollutant water body.Mode by the different frequency behavior of formation after fast Flourier (Fast Fourier) conversion shows.Adopt 0.1,1,5, Methomyl (1TU=0.2mg/L) water body of 10TU (toxic unit) carries out online biosafety pre-alarming.
Online biological monitoring result as shown in Figure 8, transverse axis is represented exposure duration among the figure, vertical pivot is represented Japanese blue or green Medaka intensity of performance.
The result shows that after exposing certain hour, the behavior of Japanese blue or green Medaka changes very obvious, and shows the behavioral toxicity effect gradually.And the behavior intensity of variation is directly related with exposure duration and exposure concentrations.In 1TU exposed, the realization in 17 hours of online biological monitoring system was reported to the police, and the result is water pollution; In 5TU exposed, the realization in 8 hours of online biological monitoring system was reported to the police, and the result is water pollution, and after 14 hours, the result is a severe contamination; In 10TU exposed, the realization in 1.3 hours of online biological monitoring system was reported to the police, and the result is water pollution, and after 3 hours, the result is a severe contamination.

Claims (4)

1. a biological monitoring system that is used for high turbidity, low temperature water quality mutation is characterized in that, comprises water body pretreatment system, signals collecting and analytic system and signal transmission system, wherein,
The water body pretreatment system comprises: the water body filtration unit (3) of bringing the mouth of a river (1) into, water delivering orifice place at water body filtration unit (3) connects water body heating arrangement (4) by pipeline, the other end of water body heating arrangement (4) connects water body mean allocation system (5), and water body mean allocation system (5) is provided with biology sensor (6);
Signals collecting and analytic system comprise signal acquiring system (10) and Signal Analysis System (11), signal acquiring system (10) is connected with biology sensor (6) by circuit, signal acquiring system (10) is connected with Signal Analysis System (11), and Signal Analysis System (11) is connected with signal transmission system (12).
2. the biological monitoring system that is used for high turbidity, low temperature water quality mutation according to claim 1 is characterized in that, described water body filtration unit (3) is to be composed in series by a plurality of Filter columns (21).
3. the biological monitoring system that is used for high turbidity, low temperature water quality mutation according to claim 1 is characterized in that described water body filtration unit (3) is provided with back purge system.
4. utilize the described monitoring method that is used for the biological monitoring system of high turbidity, low temperature water quality mutation of claim 1, comprise the following steps:
A) cultivation of indicator organism and selection;
B) utilize the water body pretreatment system to carry out the water body pre-service;
C) adopt biology sensor to gather biological behavior signal;
D) the biological behavior signal that biology sensor is collected is sent to Signal Analysis System by signal acquiring system, carries out analysis and judgement;
E) result of Fen Xiing is sent to the supvr by signal transmission system.
CN2010106206870A 2010-12-24 2010-12-24 Biological monitoring system and method for monitoring sudden change of high-turbidity and low-temperature water quality Pending CN102175825A (en)

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