CN102937637B - Water body experiment apparatus and method - Google Patents
Water body experiment apparatus and method Download PDFInfo
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- CN102937637B CN102937637B CN201210404633.XA CN201210404633A CN102937637B CN 102937637 B CN102937637 B CN 102937637B CN 201210404633 A CN201210404633 A CN 201210404633A CN 102937637 B CN102937637 B CN 102937637B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention relates to a water body experiment apparatus and a water body experiment method. The apparatus comprises a sediment release unit, a culture unit, a control unit, a water body controlling system, and a water quality monitoring system. The sediment release unit, the culture unit, and the control unit are sequentially arranged adjacently. Each two adjacent units are connected with a baffle, such that an experiment box body with the three units communicating with each other is formed. The water body controlling system is used for regulating physical and chemical indicators of water body in the experiment apparatus. The water quality monitoring system is used for detecting the physical and chemical indicator values of water body, sediment, plankton and/or submerged aquatic plants in the experiment apparatus. According to the invention, sediment sampling, sediment pollutant releasing, and algae and submerged plant growing are effectively combined. With the apparatus, sediment release effect of different water environments can be simulated, and influences of different ecological projects (environmental-protection dredging projects and submerged aquatic plant restoration projects) upon water body eutrophication and water body pollution can be quantitatively studied.
Description
Technical field
The present invention relates to experimental provision and the method in a kind of environmental protection and the field of improvement, particularly relate to a kind of water body experimental provision and the method for studying water-bed mud-hydrobiont system biological chemical process.
Background technology
Bed mud is one of three large elements of water body in lake, is important step and the interface of the geochemical cycle of Lakes in Nutrition material.The geochemical behavior of water-bed mud interface nutriment is to lake, and especially the quality of water environment of shallow lake and the ecosystem have very important impact.Research shows, heavy metal, organism, nitrogen and phosphorus pollutants etc. are when external condition (disturbance etc. as dissolved oxygen DO, pH value, oxidation-reduction potential, temperature, biology and water body) is suitable, polluter (as nitrogen, phosphorus, heavy metal, organism etc.) in bed mud again may be discharged in water body and cause secondary pollution, forms long-term threat to aquatic ecosystem.
For a long time, Chinese scholars has carried out many research to Lake Water-bed mud interface, is summed up, mainly concentrates on: the occurrence patterns of interfacial structure and feature, nutrient, absorption-desorption and the aspect such as dynamics and Environmental Factors thereof.And these researchs are carried out based on water-this basis of phase structure, bed mud interface two, considering less in this two alternate existence with effect to biological (especially algae and submerged plant), may there is deviation in the conclusion drawn.Submerged plant growth process and breakout of water bloom process are also with water-bed mud interface microbe colony structure and quantity simultaneously, the acute variation of interface dissolved oxygen DO (DO), pH value, Dissolved Organic Matter (DOM) (DOC), the change of these conditions changes directly causing water environment Middle nutrition salt, heavy metal and organic contaminant form, bioavailability, toxicity and biogeochemical cycle and home to return to.
Mostly current existing bed mud indoor simulation device is based on water-bed mud interface two-phase structural research, and these devices serve good reference function to the release action of research bed mud and influence factor thereof.But these devices all can not Simulated Water China generating process, submerged plant growth process and sediment contamination release Dynamic Coupling relation; Ecological engineering (environmental dredging engineering, the submerged plant restore engineering) impact on body eutrophication can not be studied in batches.Therefore still lack feature richness, in real time, fast, for studying biology (submerged plant, algae) and the interactional device of sediment release.
Because the defect that above-mentioned existing water body experimental provision exists, the present inventor is based on being engaged in this type of research practical experience abundant for many years and professional knowledge, actively in addition research and innovation, to founding a kind of water body experimental provision of new structure, general existing water body experimental provision and method can be improved, make it have more practicality.Through constantly research, design, and through repeatedly studying sample and after improving, finally creating the present invention had practical value.
Summary of the invention
Fundamental purpose of the present invention is, provides a kind of new water body experimental provision and method, and technical matters to be solved to simulate water body sediment release and planktonic algae, submerged plant coupled relation, thus be more suitable for practicality.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of water body experimental provision that the present invention proposes, it comprises: sediment release unit, cultivation unit, control module, water body control system and water quality monitoring system; Described sediment release unit, cultivation unit are adjacent successively with control module, connect between unit adjacent between two with baffle plate, thus the test casing that formation three unit are interconnected; Described water body control system, for regulating the physical and chemical index of water body in experimental provision; Described water quality monitoring system, for the physical and chemical index numerical value of water body in test experience device, bed mud, planktonic organism and/or hydrophyte.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Further, aforesaid water body experimental provision, wherein said water body control system comprise in pH value control system, dissolved oxygen DO control system, water circulation system, illuminator and water temperature control system one or more; Described pH value control system is by pH electrode, pH controller, sour storage tank, alkali storage tank, sour volume pump, alkali volume pump and add soda acid mouth and form, pH electrode and add soda acid mouth and be arranged in control module; Described dissolved oxygen DO control system is made up of dissolved oxygen electrode, dissolved oxygen control instrument, welding bottle, nitrogen cylinder, flow controller and sudden and violent tracheae, dissolved oxygen electrode is used for detecting the dissolved oxygen value of water body, and measured value is fed back to dissolved oxygen control instrument, sudden and violent tracheae is used for providing oxygen or nitrogen; Water circulation system is made up of pump and water pipe, for the flowing of water body in circulation experiment device; Illuminator is made up of multiple light source, for providing the illumination of multiple intensity of illumination to experimental provision; Water temperature control system is made up of temperature controller, well heater and temp probe, the temperature be used in regulating and controlling experimental provision.
Further, aforesaid water body experimental provision, wherein said baffle plate is combined by drain bar and phytoplankton net; The bottom of cultivating the baffle plate between unit and sediment release unit is plankton net, and top is drain bar; The top of cultivating the baffle plate between unit and control module is plankton net, and bottom is drain bar, and described drain bar is poly (methyl methacrylate) plate or PVC board or glass plate.
Further, aforesaid water body experimental provision, wherein said sediment release unit arranges multiple base with bayonet socket and sampling pipe, sampling pipe can be connected and stably be fixed on base by described bayonet socket.
Further, aforesaid water body experimental provision, wherein said sampling pipe is column, and be provided with two symmetrical electrode holes at a certain distance from bottom, the electrode of its pore size and monitoring system matches.
Further, aforesaid water body experimental provision, wherein said water quality monitoring system is made up of electrode probe, Water Test Kits and data processor, and electrode probe is one or more, is arranged at sediment release unit and/or cultivates in unit.
Further, aforesaid water body experimental provision, it also comprises the stirrer be arranged in control module, and one from sediment release unit or can be cultivated the moveable siphon sampling pipe that unit gathers water sample.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.The present invention also proposes a kind of water body research experiment method, and adopt above-mentioned water body experimental provision, the method comprises the following steps: from studied lake or river, gather bed mud with sampling pipe, and retain overlying water on bed mud; Sampling pipe after gathering bed mud is arranged in sediment release unit; In the solution injection experiments device that the overlying water in studied lake or river or experimentally need is configured; The height of liquid level in whole device is made to exceed the height of cylindrical sample collection tube; Regulate the water temperature in experimental provision to be in the temperature range of setting, regulate the pH value of water body and/or the content of dissolved oxygen DO, regulating illumination time and intensity; At the algae kind of cultivating in unit needed for inoculation experiments or kind planting submerged plant; By water quality monitoring system, measure the physical and chemical index of water body in algae or submerged plant growth process and gap water body; Get the bed mud of cylindrical sample collection tube, research algal grown or the total amount of submerged plant growth process to pollutant in bed mud and the Changing Pattern of form thereof simultaneously.
Further, aforesaid water body research experiment method, if the research only carrying out Sediments release and planktonic algae, submerged plant growth coupled relation, then without the need to the content of the pH value and dissolved oxygen DO that regulate water body.Water body in experimental provision is in the state of circulating in experimentation.
By technique scheme, water body experimental provision of the present invention and method at least have following advantages:
The feature of apparatus of the present invention is by the release of bed mud sample collection, pollutants in sediments and algae, submerged plant growth being organically combined, be convenient to simulate the release action of different water environment conditions change to bed mud, can artificial disturbance be reduced simultaneously, keep the original traits of overlying water and bed mud.By sediment release unit and algae culture unit associations, can in simulated water bloom breakout process water environment factors process with meet the Dynamic Coupling relation polluting contaminant transportation conversion process, explain the response mechanism of combined pollutant Transport And Transformation in eutrophication Water Under environment.By physical agents such as adjustment pH, dissolved oxygen DO, temperature, illumination, the impact that the change can simulating water body physical and chemical factor discharges sediment pollution.By sediment release unit and submerged culture unit associations, the change procedure of Water Factors in submerged plant growth process and the Dynamic Coupling relation of combined pollutant Transport And Transformation can be simulated, the purification mechanism of explaination submerged plant on water body and the impact of ecological factor.Submerged plant planting and Vertical Sampling duct ligation can be closed, study the restoration of the ecosystem of variety classes submerged plant to the form of pollutant in water body-bed mud and the impact of release, for the selection of restoration of the ecosystem submerged plant provides scientific basis.Can use the bed mud that cylindrical sample collection tube gathers different levels or the bed mud gathered before and after dredging, batch studies the impact of different environment-friendly dredging depth on overlying water, thus provides technical support for the determination of polluted bed mud environmental protection degree of deepening by dredging.In sum, this device can be simulated pollutant in bed mud preferably and be discharged the Dynamic Coupling relation with wawter bloom generating process, submerged plant growth process, can multiple processes of the migration of pollutant in water-bed mud-biosystem, conversion be attached in a device, the multifunction of implement device simultaneously; The small volume of this device, arbitrarily can be placed in each corner of experimental site, is convenient to carry out various simulated experiment, and this device adopts modular design in addition, and it is convenient that parts are changed in mounting or dismounting, can constantly operate for a long time, long service life.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of instructions, coordinates accompanying drawing to be described in detail as follows below with preferred embodiment of the present invention.
Accompanying drawing explanation
Fig. 1 is the water body experimental provision structural representation of the embodiment of the present invention.
Fig. 2 is column collection tube structural representation.
Embodiment
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to the water body experimental provision proposed according to the present invention and its embodiment of method, structure, feature and effect thereof, be described in detail as follows.
Refer to shown in Fig. 1 and Fig. 2, Fig. 1 is the water body experimental provision structural representation of the embodiment of the present invention, and Fig. 2 is column collection tube structural representation in embodiment.The present invention propose a kind of be applied to simulation water body sediment release and planktonic algae, submerged plant coupled relation device, the release of bed mud sample collection, pollutants in sediments and algae, submerged plant growth are organically combined, for simulating the release action of different water environment conditions bed mud, simultaneously can quantitative examination different ecological engineering (environmental dredging engineering, submerged plant restore engineering) on the impact of body eutrophication and water pollution.The water body experimental provision of present pre-ferred embodiments comprises sediment release unit 1, cultivates unit 2, control module 3, pH value control system 13, dissolved oxygen DO control system 6, water circulation system 21, illuminator 22, water temperature control system 24 and water quality monitoring system 29.
Described sediment release unit 1, cultivation unit 2, control module 3 are rectangular box body respectively, are made up of respectively methacrylate sheet (or glass board material).Sediment release unit 1, cultivation unit 2 are adjacent successively with control module 3, connect between unit adjacent between two with baffle plate, thus the rectangular parallelepiped test casing that formation three unit are interconnected.Described baffle plate is combined by drain bar and phytoplankton net (4).
The base plate of described sediment release unit 1 is arranged multiple base 37 with bayonet socket, be preferably 20, this bayonet socket can directly be connected with cylindrical sample collection tube and stably be fixed on base, and can arbitrarily dismantle.The cylindrical sample collection tube 5 of many band plugs being also set in described sediment release unit 1, being preferably 20 sampling pipes, for studying the physical and chemical properties change of different levels bed mud.The outer diameter of cylindrical sample collection tube is 9cm, can directly be connected with columnar sampler, and it is highly 10 ~ 40cm, and preferred version is 20cm-30cm.
As shown in Figure 2, described cylindrical sample collection tube 5 is provided with two symmetrical electrode holes 34 at a certain distance from bottom, its pore size should match with the electrode of monitoring system.Described electrode 35 can comprise pH electrode, dissolved oxygen DO (DO) electrode, oxidation-reduction potential (Eh) electrode, sulfuretted hydrogen microelectrode, ammonia nitrogen electrode etc.When not electrode insertion, adopt rubber plug 36 by electrode hole 34 shutoff, preventing the bed mud 39 in collection tube from revealing, is aqueous phase 38 on the bed mud 39 in collection tube.
Described cultivation unit 2 is that planktonic algae and/or submerged plant cultivate unit 2, for cultivating planktonic algae and/or submerged plant.This cultivation unit is connected with the sediment release unit in left side by baffle plate, and the top of this baffle plate is poly (methyl methacrylate) plate or PVC board or glass plate, and bottom is plankton net 4.The height of this plankton net is 5-20cm, is preferably 10-15cm; The height of the poly (methyl methacrylate) plate on top or PVC board or glass plate is that the overall height of cultivating unit 2 deducts plankton net 4 height.
The right side of described cultivation unit 2 is also connected with control module 3 by another baffle plate, and the top of this baffle plate is plankton net 4, and bottom is poly (methyl methacrylate) plate or PVC board or glass plate.The height of this plankton net is 5-20cm, is preferably 10-15cm.The height of the poly (methyl methacrylate) plate on top or PVC board or glass plate is that the overall height of cultivating unit 2 deducts plankton net 4 height.
Above-mentioned plankton net 4 is No. 25 plankton nets (mesh 0.064mm), and can directly be fixed on the inwall of the both sides of cultivating unit, its underpart and/or top are arranged on methacrylate sheet.
Described control module 3, is regulate or the place of water quality needed for preparation experiment, is mainly used in pH value and/or the dissolved oxygen content of water body in Control release device.
Described pH value control system 13 is by pH electrode 19, pH controller 16, sour storage tank 14, alkali storage tank 15, sour volume pump 17, alkali volume pump 18 and add soda acid mouth 20 and form.The pH electrode 19 of pH value control system 13 and add soda acid mouth 20 and be arranged in control module, and slip in the water body of casing, other equipment can be arranged on outside water body.The available hydrochloric acid of acid in acid storage tank 14 and/or sulfuric acid preparation, the alkali available hydrogen sodium oxide molybdena preparation in alkali storage tank 15, its concentration is determined by actual needs.PH value control system 13 is detected the pH value of water body in control module 3 by the probe of pH electrode 19, feed back to pH controller 16, the range of control of pH is set according to pH controller 16, if pH detected value is more than pH setting value, pH controller 16 will provide a logical signal, thus start pH adjusting agent and add acid in sour storage tank 14 or alkali storage tank 15 or alkali in control module by sour volume pump 17 or alkali volume pump 18, within the scope that in adjustment control module, the pH value of water body extremely sets, then stop volume pump.
Described dissolved oxygen DO control system 6, for the dissolved oxygen content of water body in Control release device, it is made up of dissolved oxygen electrode 12, dissolved oxygen control instrument 7, welding bottle 8, nitrogen cylinder 9, flow controller 10 and sudden and violent tracheae (11).This system sets the value range of dissolved oxygen DO by dissolved oxygen control instrument 7, detected by the dissolved oxygen value of water body in probe 12 pairs of control modules of dissolved oxygen electrode, and measured value is fed back to dissolved oxygen control instrument 7, if dissolved oxygen DO detected value is lower than the value range of aforementioned setting dissolved oxygen DO, dissolved oxygen control instrument will provide a logical signal adjust flux controller 10 and provide oxygen to aeration tube 11; If dissolved oxygen DO detected value is higher than the value range of setting dissolved oxygen DO, dissolved oxygen control instrument will provide a logical signal adjust flux controller 10 and provide nitrogen to aeration tube 11, thus the dissolved oxygen DO of water body in control module is within the scope of setting.
In control module 3, be provided with stirrer 33, be preferably adjustable speed stirrer, realized the Homogeneous phase mixing of pH value and/or dissolved oxygen DO in control module by stirrer 33.
Water circulation system 21, for the flowing of water body in circulation experiment device, it is made up of adjustable speed peristaltic pump 21 and water pipe.The sidewall of sediment release unit 1 is provided with water inlet, the sidewall of control module sets out the mouth of a river, the water inlet of the water delivering orifice of control module with sediment release unit is connected with water pipe by adjustable speed constant flow pump 21, water delivering orifice slightly lower than water inlet, concrete flow velocity experimentally situation is controlled by adjustable speed constant flow pump 21.
Illuminator 22, for providing illumination to experimental provision, it is arranged on the top of whole device, be connected with four angles of device by four columniform pillars, light source is that the light source board be made up of four daylight lamps is side by side formed, and controls each daylight lamp respectively and regulating illumination intensity by switch.The height of described four columniform pillars is 5-20cm, and in order to prevent light source irradiation from causing water temperature to raise, the height preferred version of pillar is 10cm.
Water temperature control system 24, the water temperature be used in controlling and regulating system, it is made up of temperature controller 25, temperature display meter 26, well heater 27 and temp probe 28, according to specific experiment situation, described well heater 27 and temp probe 28 can be arranged on sediment release unit 1, cultivate a place in unit 2 and control module 3 or a few place.Set the water temperature scope of experimental provision by temperature controller 25, preferable temperature range of control is 5-40 DEG C.Temp probe 28 is for the temperature of water body in test experience device, and the temperature value of detection is fed back to temperature controller 25, if water temperature is lower than set temperature controlling range, then temperature controller startup well heater 27 pairs of water bodys heat, until water temperature reaches in temperature setting range.
Water quality monitoring system 29 is made up of electrode probe 32, Water Test Kits 31 and data processor 30 3 part, electrode probe 32 can be multiple, is arranged at sediment release unit 1 respectively and/or cultivates in the overlying water of unit 2 and the electrode hole 34 of cylindrical sample collection tube.Can arrange a transportable siphon sampling pipe respectively in sediment release unit 1 and cultivation unit 2, this sampling pipe depth and place can change as required, and sampling pipe can take water sample, to measure the not measurable physical and chemical index of Water Test Kits.
The present invention also proposes a kind of water body research experiment method, and the method comprises the following steps:
1, collecting sample from natural water, for the lake of carrying out studying or river, cylindrical sample collection tube is connected with sampling thief, and gathers undisturbed sediment sample from research object water body, cylindrical sample collection tube top retains overlying water slightly, to reduce the disturbance of bed mud sample.The sample size gathered is multiple, such as, be 20.Then Stochastic choice 5 is with cylindrical sample collection tube, is arranged in sampling pipe by electrode needed for analytical test.After above-mentioned steps completes, be stably fixed on 20 on the base of sediment release unit with cylindrical sample collection tube.
2, collection in worksite overlying water or experimentally need is configured solution to inject and cultivate unit and control module, make the height of liquid level in whole device exceed more than the height 10cm of cylindrical sample collection tube.
3, experimentally object, serviceability temperature control system controls the water temperature of whole device, uses illumination system to control the intensity of illumination of whole device, uses control module to control pH value and the dissolved oxygen DO of whole device water body.After the indices in this device reaches requirement of experiment, the water circulation system of starter gear, allows the water body of three unit in device be in commutative state.
4, experimentally object, in the algae kind of cultivating in unit needed for inoculation experiments or plant planting submerged plant.If only carry out the research of Sediments release and planktonic algae, submerged plant growth coupled relation, can pH and/or the DO control system of temporary close device.
5, by water quality monitoring system, the physical and chemical index of water body in algae or submerged plant growth process and gap water body is measured; The bed mud of cylindrical sample collection tube can be got, research algal grown or the total amount of submerged plant growth process to pollutant in bed mud and the Changing Pattern of form thereof simultaneously.
Example 1
The response mechanism research that in breakout of water bloom process, contaminant transportation transforms
1) utilize the bed mud of the different pollution level of samplers sample in cylindrical sample collection tube, the electrode of pH electrode, oxidation-reduction potential (Eh) electrode, ammonia nitrogen is arranged in the electrode hole of cylindrical sample collection tube, is then fixed on the base of sediment release unit.
2) collection in worksite overlying water is slowly injected this device, make the liquid level of water body exceed cylindrical sample collection tube 10cm.
3) open water temperature control system, setting device water temperature is 27 ± 1 DEG C; Open illumination system, make the ratio of the illumination of system be 12/12, i.e. 12 h light, 12 h dark.Close pH and/or DO control system simultaneously.
4) inoculate.The algae kind of the microcystic aeruginosa being in growth logarithmic phase is inoculated in algae culture unit, makes the algae density of water body be in 5 × 10
4individual/L.
5) water circulation system of starter gear, the water body of sediment release unit and the water body of algae culture unit are in the state of circulating.
6) in conjunction with water quality monitoring system, the content of the indexs such as breakout of water bloom process (measuring the biomass cultivating unit) water-bed mud interface environments factor (pH, Eh and DO), sulfide, algae bio amount, total nitrogen, total phosphorus, ammonia nitrogen, nitre nitrogen, Phos, organic carbon (TOC), heavy metal (chromium, nickel, copper, zinc, arsenic, cadmium, lead, mercury) is measured.
7) pollutant water-bed mud interface diffusion flux is with reference to the model formation of Fick First Law:
in formula: F is the diffusion flux by overlying water; For the factor of porosity of sediments; For the nutritive salt gradient at overlying water-bed mud interface; Ds is the actual molecules coefficient of diffusion considering bed mud effect.
8) in conjunction with different pollution level bed mud test, the dynamic change of water-bed mud interface pollution thing in the whole process of research breakout of water bloom, inquire into body eutrophication to coerce down, how the contaminant transportation conversion behavior such as nitrogen phosphorus, heavy metal respond, whether Water Environment Nitrogen phosphorus, heavy metal pollution are inhibited or strengthen, thus disclose Dynamic Coupling relation between breakout of water bloom process and contaminant transportation conversion process.
Example 2
The change of pH value and/or dissolved oxygen DO is on the impact of pollutant release in bed mud
1) utilize the bed mud of the different pollution level of samplers sample in cylindrical sample collection tube, pH, electrode such as oxidation-reduction potential (Eh) electrode, ammonia nitrogen etc. are arranged in the electrode hole of cylindrical sample collection tube, are then fixed on the base of sediment release unit.
2) collection in worksite overlying water is slowly injected this device, make the liquid level of water body exceed cylindrical sample collection tube 10cm.
3) open water temperature control system, setting device water temperature is 27 ± 1 DEG C; Close and open illumination system.
4) the pH serial experiment of different gradient and/or different gradient DO serial experiment are set, carry out the influence research of pH and/or DO change to pollutant release in bed mud.
5) water circulation system of starter gear, the water body of sediment release unit and the water body of pH and/or DO control module are in the state of circulating.
6) in conjunction with water quality monitoring system, the content of the indexs such as total nitrogen, total phosphorus, ammonia nitrogen, nitre nitrogen, Phos, organic carbon (TOC), heavy metal (chromium, nickel, copper, zinc, arsenic, cadmium, lead, mercury) in water body and bed mud is measured.
7) in conjunction with control test, the impact of the research environment factor (pH and/or DO) change on contaminant transportation conversion behavior such as water-bed mud interfacial nitrogen phosphorus, heavy metals.
Studied water body described herein comprises water, bed mud and hydrobiont.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (9)
1. a water body experimental provision, is characterized in that it comprises: sediment release unit, cultivation unit, control module, water body control system and water quality monitoring system;
Described sediment release unit, cultivation unit are adjacent successively with control module, connect between unit adjacent between two with baffle plate, thus the test casing that formation three unit are interconnected; Described cultivation unit is for cultivating planktonic algae and/or submerged plant; Described baffle plate is combined by drain bar and phytoplankton net;
Described water body control system, for regulating physical and chemical index and the water body flow of water body in experimental provision;
Described water quality monitoring system, for the physical and chemical index numerical value of water body in test experience device, bed mud, planktonic organism and/or hydrophyte;
Wherein, the base plate of sediment release unit is arranged multiple base with bayonet socket and cylindrical sample collection tube, cylindrical sample collection tube can be connected by described bayonet socket and stably be fixed on base.
2. water body experimental provision according to claim 1, is characterized in that, described water body control system comprise in pH value control system, dissolved oxygen DO control system, water circulation system, illuminator and water temperature control system one or more;
Described pH value control system is by pH electrode, pH controller, sour storage tank, alkali storage tank, sour volume pump, alkali volume pump and add soda acid mouth and form, pH electrode and add soda acid mouth and be arranged in control module;
Described dissolved oxygen DO control system is made up of dissolved oxygen electrode, dissolved oxygen control instrument, welding bottle, nitrogen cylinder, flow controller and sudden and violent tracheae, dissolved oxygen electrode is used for detecting the dissolved oxygen value of water body, and measured value is fed back to dissolved oxygen control instrument, sudden and violent tracheae is used for providing oxygen or nitrogen;
Water circulation system is made up of pump and water pipe, for the flowing of water body in circulation experiment device;
Illuminator is made up of multiple light source, for providing the illumination of multiple intensity of illumination to experimental provision;
Water temperature control system is made up of temperature controller, temperature display meter, well heater and temp probe, the temperature be used in regulating and controlling experimental provision.
3. water body experimental provision according to claim 1, is characterized in that,
The bottom of cultivating the baffle plate between unit and sediment release unit is plankton net, and top is drain bar;
The top of cultivating the baffle plate between unit and control module is plankton net, and bottom is drain bar.
4. water body experimental provision according to claim 1, is characterized in that, described sampling pipe is provided with two symmetrical electrode holes at a certain distance from bottom, the electrode of its pore size and monitoring system matches.
5. water body experimental provision according to claim 1, is characterized in that, described water quality monitoring system is made up of electrode probe, Water Test Kits and data processor, and electrode probe is one or more, is arranged at sediment release unit and/or cultivates in unit.
6. the water body experimental provision according to any one of claim 1-5, is characterized in that, also comprises the stirrer be arranged in control module, and one from sediment release unit or can be cultivated the moveable siphon sampling pipe that unit gathers water sample.
7. a water body research experiment method, is characterized in that, adopt the water body experimental provision described in the claims 1-6, the method comprises the following steps:
From studied lake or river, gather bed mud with sampling pipe, and retain overlying water on bed mud;
Sampling pipe after gathering bed mud is arranged in sediment release unit;
In the solution injection experiments device that the overlying water in studied lake or river or experimentally need is configured; The height of liquid level in whole device is made to exceed the height of cylindrical sample collection tube;
Regulate the water temperature in experimental provision to be in the temperature range of setting, regulate the pH value of water body and/or the content of dissolved oxygen DO, regulating illumination time and intensity;
At the algae kind of cultivating in unit needed for inoculation experiments or kind planting submerged plant;
By water quality monitoring system, measure the physical and chemical index of water body in algae or submerged plant growth process and gap water body; Get the bed mud of cylindrical sample collection tube, research algal grown or the total amount of submerged plant growth process to pollutant in bed mud and the Changing Pattern of form thereof simultaneously.
8. water body research experiment method according to claim 7, is characterized in that, if only carry out the research of Sediments release and planktonic algae, submerged plant growth coupled relation, then without the need to the content of the pH value and dissolved oxygen DO that regulate water body.
9. the water body research experiment method according to claim 7 or 8, it is characterized in that, the water body in experimental provision is in the state of circulating in experimentation.
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| CN103364473A (en) * | 2013-07-26 | 2013-10-23 | 中国环境科学研究院 | Device and method for study on release of heavy metals and/or phosphate in sediments |
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