CN103713027B - Vertical type columnar microorganism reactor - Google Patents
Vertical type columnar microorganism reactor Download PDFInfo
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- CN103713027B CN103713027B CN201410025738.3A CN201410025738A CN103713027B CN 103713027 B CN103713027 B CN 103713027B CN 201410025738 A CN201410025738 A CN 201410025738A CN 103713027 B CN103713027 B CN 103713027B
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Abstract
The invention discloses a vertical type columnar microorganism reactor which is a special sensor for measuring the biochemical oxygen demand (BOD). The vertical type columnar microorganism reactor comprises a reactor cavity body, a reactor base, a meshed microorganism bed, a dissolved-oxygen detection electrode, a temperature control system and a stirring system, wherein the reactor cavity body is arranged on the reactor base; the meshed microorganism bed, the dissolved-oxygen detection electrode and a temperature sensor of the temperature control system are arranged in the reactor cavity body; a semiconductor heater of the temperature control system and a magnetic stirring pump of the stirring system are arranged in the reactor base; a circulating pipeline of the stirring system is arranged on the outer side of the reactor cavity body; the bottom part and the upper part of the reactor cavity body are communicated by the circulating pipeline. The meshed microorganism bed which is of a meshed cylinder structure is arranged in the middle of the reactor cavity body, the upper part and the lower part of the reactor cavity body are communicated by mesh holes in the meshed microorganism bed, the diameter of each mesh hole of the meshed microorganism bed is 1.5-2.0mm. The vertical type columnar microorganism reactor disclosed by the invention has the advantages that the volume is shrunk, the power of the heating and stirring system is reduced and fast measurement of the BOD is realized.
Description
Technical field
The present invention relates to water quality monitoring instrument, the more particularly to measuring instrument of sea water mesophytization oxygen demand.
Background technology
Biochemical oxygen demand (bod) is one of leading indicator of seawater quality monitoring.The standard method of bod measurement is that scene takes
Sample lab analysis, water sample is cultivated 5 days under the conditions of 20 DEG C ± 1 DEG C, respectively the dissolved oxygen value before and after determination sample culture, and two
The difference of person is the dissolved oxygen that microbial degradation Organic substance is consumed, commonly referred to as biochemical oxygen demand in five days, with bod5Represent.This
Method complex operation, time-consuming, laborious, poor in timeliness, therefore, the technical research of the quick measurement of bod and on-line measurement constantly obtains
Progress.Existing bod method for fast measuring has microorganism film technique and microorganism reactor method.
Critical component using the bod instrument for quick measuring of microorganism reactor method is microorganism reactor.Existing bod is quick
The usual volume of microorganism reactor used by measuring instrument is larger, from 900 milliliters to 3 liters, and is to be formed by connecting by several parts,
Lack globality, be not the measurement sensor of integration.
Fig. 1 shows the cross section structure of annular microorganism reactor used by existing a bod instrument for quick measuring, and described annular is micro-
Bioreactor is the large-scale of annular reactor cavity a2, dissolved oxygen test chamber a8 and circulating pump a6 and connecting line a7 composition
Combination unit.
Many tubular microbial bed a4 are placed, tubular microbial bed a4 is in annular reactor chamber in annular reactor cavity a2
With water sample flowing in body a2, circulating pump a6 provides the power that water sample flows in annular reactor cavity a2.Dissolved oxygen test chamber
Body a8 is connected by connecting line a7 with annular reactor cavity a2, and dissolved oxygen detecting electrode a1 is arranged on dissolved oxygen test chamber a8
Interior.A large amount of microorganism species are adhered to, microorganism species are by water in annular reactor cavity a2 on the inwall of tubular microbial bed a4
The oxidation operation of sample, the pipeline that the water sample in annular reactor cavity a2 connects through circulating pump a6 enters circulating pump a6, then
The pipeline being connected with dissolved oxygen test chamber a8 through circulating pump a6 enters dissolved oxygen test chamber a8, finally again through dissolved oxygen
The pipeline that test chamber a8 is connected with reactor cavity a2 returns to annular reactor cavity a2, completes to circulate, simultaneously dissolved oxygen inspection
Survey the oxygen consumption in short-term that electrode a1 detects microorganism species, and calculate total oxygen consumption (oxygen consumption on the five).The mensure of bod needs
Carry out at a constant temperature, wire-wound resistor formula heater a5 is located at the central authorities of annular reactor cavity a2, temperature sensor a3 soaks
In the water sample of annular reactor cavity a2, they complete thermostatic control under the control of single-chip microcomputer.
But, the quick measurement microorganism used therefor reactor volume of above-mentioned bod is larger, more than 900 milliliters, the micro- life of tubulose
Thing bed a4 flows with water sample in annular reactor cavity a2, and consumption reagent is more, and energy consumption is also bigger than normal.And, this reactor
The large-scale combined device being made up of several parts, lacks globality, maintenance, replacing are very inconvenience, have impact on actually used.
Content of the invention
The problems of microorganism reactor for above-mentioned existing bod fast measurement technique, the present invention releases new
Microorganism reactor, fixed gauze bio bed, embedded mixing pump, dissolved oxygen detecting electrode are placed in same column shape
In housing, realize the small-sized integrated of reactor, decrease reactor volume, save amount of reagent and energy consumption, more conducively keep in repair more
Change.
Vertical type columnar microorganism reactor involved in the present invention is in vertical column structure, including reactor cavity, reactor
Base, netted microorganism bed, dissolved oxygen detecting electrode, temperature-controlling system and stirring system, temperature-controlling system is by temperature sensor and half
Conductor heater is constituted, and stirring system is made up of magnetic agitation pump and circulation line.Reactor cavity is placed in reactor base,
Netted microorganism bed, dissolved oxygen detecting electrode, the temperature sensor of temperature-controlling system are placed in reactor cavity body, and the half of temperature-controlling system
The magnetic agitation pump of conductor heater and stirring system is placed in reactor base, and the circulation line of stirring system is placed in reactor
Outside cavity, reactor cavity bottom is connected by circulation line with top.
Reactor cavity is the container containing seawater sample to be measured, is cylinder-like structure, is placed in reactor base.Reactor
Base be cylindrical structure, top have depression uncovered, the depression on top is uncovered to be connected with reactor cavity bottom.Reactor base
The hickey at top is connected with reactor cavity circular cylindrical shell lower end, and reactor cavity is vertically connected with reactor base and is formed
Accommodate the hermetic container of seawater sample to be measured.
Netted microorganism bed is netted cylindrical structure, is placed in the middle part of reactor cavity, is fixed on reactor cavity cylinder
In inner walls, mesh aperture is 1.5～2.0 millimeters.Reactor cavity is divided into upper and lower two parts, up and down by netted microorganism bed
Two parts are connected by the mesh of netted microorganism bed, the cylindrical central axis of netted microorganism bed and reactor cavity center
Dead in line.
Magnetic agitation pump is embedded mixing pump, and the depression being arranged on reactor base is uncovered interior, is placed in reactor cavity
In the seawater sample to be measured of body bottom, it is straightforward to provide the horizontal direction flow velocity of seawater sample.
The depression that semiconductor heat booster is arranged on reactor base is uncovered interior, on magnetic agitation pump, is reactor
The seawater sample to be measured heating of cavity bottom.Heat can comparatively fast be distributed by the agitation heating water sample flowing of magnetic agitation pump.
Circulation line is placed in outside reactor cavity circular cylindrical shell, and circulation line upper end is from reactor cavity cylinder cover body end
Lid insertion reaction device cavity top, the depression on circulation line lower end insertion reaction device base top is uncovered, by reactor cavity bottom
Portion and reactor base top are connected with reactor cavity top.
In dissolved oxygen detecting electrode insertion reaction device cavity, through netted microorganism bed, and it is fixed on instead by locking differential
Answer on the end cap of device cavity circular cylindrical shell.
Temperature sensor is arranged on reactor cavity circular cylindrical shell end cap, the measuring probe insertion reaction of temperature sensor
In device cavity, contact with seawater sample to be measured.
Temperature sensor, dissolved oxygen detecting electrode, semiconductor heat booster and magnetic agitation pump respectively with microorganism reactor
The single-chip microcomputer of outside calculation control unit connects.
Brief description
Fig. 1 is the annular microorganism reactor cross section structure schematic diagram of prior art；
Fig. 2 is the vertical type columnar microorganism reactor structural representation of the present invention.
In figure description of symbols:
A1, dissolved oxygen detecting electrode a2, annular reactor cavity
A3, temperature sensor a4, tubular microbial bed
A5, resistance type heater a6, circulating pump
A7, connecting line a8, dissolved oxygen test chamber
1st, dissolved oxygen detecting electrode 2, locking differential
3rd, temperature sensor 4, outlet
5th, netted microorganism bed 6, reactor cavity
7th, semiconductor heat booster 8, water inlet
9th, magnetic agitation pump 10, reactor base
11st, circulation line
Specific embodiment
In conjunction with accompanying drawing, technical scheme is described further.As shown in Fig. 2 vertical post involved in the present invention
Shape microorganism reactor is in vertical column structure, including reactor cavity 6, reactor base 10, netted microorganism bed 5, dissolved oxygen
Detecting electrode 1, temperature-controlling system and stirring system, temperature-controlling system is made up of temperature sensor 3 and semiconductor heat booster 7, stirring system
System is made up of magnetic agitation pump 9 and circulation line 11.Reactor cavity 6 is placed in reactor base 10, netted microorganism bed 5,
Dissolved oxygen detecting electrode 1, temperature-controlling system temperature sensor 3 are placed in reactor cavity 6, the semiconductor heat booster 7 of temperature-controlling system
It is placed in reactor base 10 with the magnetic agitation pump 9 of stirring system, the circulation line 11 of stirring system is placed in reactor cavity 6
Outside, the bottom of reactor cavity 6 connects by circulation line 11 with top.
Reactor cavity 6 is the container containing seawater sample to be measured, is cylinder-like structure, is placed in reactor base 10.Instead
Answer device base 10 be cylindrical structure, top have depression uncovered, the depression on top is uncovered to be connected with reactor cavity 6 bottom.Instead
The hickey at device base 10 top is answered to be connected with the circular cylindrical shell lower end of reactor cavity 6, reactor cavity 6 and reactor bottom
Seat 10 is vertically connected with and forms the hermetic container accommodating seawater sample to be measured.The internal diameter of reactor cavity 6 is 60 millimeters, and depth is
100 millimeters, dischargeable capacity is 280 milliliters.The water inlet 8 from reactor base 10 top for the seawater sample to be measured enters, reacted
After device balance and water sample measurement, flow out from the outlet 4 positioned at reactor cavity 6 top.
Netted microorganism bed 5 is netted cylindrical structure, is placed in the middle part of reactor cavity 6, is fixed on reactor cavity 6
Circular cylindrical shell inwall on, mesh aperture be 1.5～2.0 millimeters.Reactor cavity 6 is divided into upper and lower two by netted microorganism bed 5
Part, upper and lower two parts are connected by the mesh of netted microorganism bed 6, its center axis of netted microorganism bed 6 with anti-
Answer device chamber central dead in line.
Magnetic agitation pump 9 is embedded mixing pump, and the depression being arranged on reactor base 10 is uncovered interior, is placed in reactor
In the seawater sample to be measured of cavity 6 bottom, it is straightforward to provide the horizontal direction flow velocity of seawater sample.
The depression that semiconductor heat booster 7 is arranged on reactor base 10 is uncovered interior, on magnetic agitation pump 9, for anti-
Answer the seawater sample to be measured heating of device cavity 6 bottom.Heat can comparatively fast be distributed by the heating water sample current of magnetic agitation pump 9 agitation
Go out.Semiconductor heat booster 7 surface has insulating waterproof layer.
Circulation line 11 is placed in outside the circular cylindrical shell of reactor cavity 6, and circulation line 11 upper end is from reactor cavity 6
Circular cylindrical shell end cap insertion reaction device cavity 6 top, the top of circulation line 11 lower end insertion reaction device base 10, by reactor
Cavity 6 bottom and reactor base 10 top are connected with the top of reactor cavity 6.The lower level side of magnetic agitation pump 9 stirring
To the seawater sample of flowing, circulated from bottom to top by circulation line 11 simultaneously.
In dissolved oxygen detecting electrode 1 insertion reaction device cavity 6, and reactor cavity 6 cylinder cover is fixed on by locking differential 2
On the end cap of body.
Temperature sensor 3 is arranged on the circular cylindrical shell end cap of reactor cavity 6, and the measuring probe of temperature sensor 3 is inserted
Enter in reactor cavity 6, contact with seawater sample to be measured.
Temperature sensor 3, dissolved oxygen detecting electrode 1, semiconductor heat booster 7 and magnetic agitation pump 9 are anti-with microorganism respectively
The single-chip microcomputer answering the outside calculation control unit of device connects.
Vertical type columnar microorganism reactor according to the present invention is the critical component of bod instrument for quick measuring, with dosing pump, perseverance
Oxygen device and single-chip microcomputer are connected to form complete bod measuring system.
The determination step of bod measuring instrument includes reactor balance, water sample measurement, measurement result calculates and reactor is put down again
Weighing apparatus, realizes automatic measurement.
When measuring, under the control with the calculation control unit of single-chip microcomputer, dosing pump is first by bod titer (such as
2mg/l), with constant flow through permanent oxygen device, then enter reactor through injection port 8.Magnetic agitation pump 9 He in reactor
The stirring system that circulation line 11 is constituted is transported to entering the titer in reactor at gauze bio bed 5, and makes reactor
The even concentration of water body everywhere in cavity.Semiconductor heat booster 7 in reactor, temperature sensor 3 and be located at outside reactor
Single-chip microcomputer constitutes constant temperature system, and constant temperature system and stirring system provide stable reaction environment for reactor jointly.Anti-
The titer reacting in device is answered automatically to overflow from outlet 4, through after a while, because sample rate is constant, internal-response
Conditions constant, oxidation rate is constant, and the measured value of the dissolved oxygen detecting electrode 1 in reactor also tends to stable equilibrium.By now
Dissolved oxygen measured value is designated as do0.
After system balancing, dosing pump switches into water sample to be measured again, and water sample to be measured is also through permanent oxygen with constant flow
Device, then enter reactor through injection port 8, overflow after reaction and from outlet 4.Due in water sample to be measured the concentration of Organic substance with
Bod titer is different, and that is, the concentration of entering organic matter of water changes, and reaction rate just there occurs change, original poised state just by
Break, the content of dissolved oxygen increases or reduces, dissolved oxygen detecting electrode 1 measured value in reactor also just changes, and will switch
Water sample to be measured after 20 minutes dissolved oxygen detecting electrode 1 measured value be designated as do1, can be according to the variable quantity of dissolved oxygen in 20 minutes reactors
(δ do=do1-do0) calculate bod5.Experiment is had to confirm organic concentration (b0d5) with the relation of initial oxidation speed (δ do)
It is linear relationship within the specific limits, such as following formula:
bod5=k△do+b
In formula, △ do is the variable quantity of dissolved oxygen in 20 minutes reactors；B is intercept, is the b0d of bod titer5Value；
Slope k is the oxidation efficiency coefficient related to reactor and reaction condition.
After completing one-shot measurement, water sample need to be switched to again bod titer, instrument need to be restored to shape stable equilibrium
State, to be measured next time.
The work process of the present invention described above is automatically performed under Single-chip Controlling, the acquisition of data, calculating, place
The storage Dou Shi automatization of reason and measurement result.
The integrated cramped construction of vertical type columnar microorganism reactor according to the present invention, the specific surface of gauze bio bed
Long-pending big, attachment population density is big, decreases reactor volume, reactor volume only has 280 milliliters, decreases reagent dosage and energy
Source consume, have small volume, lightweight, easy and simple to handle the features such as it is achieved that the quick measurement of bod, drastically increase work
Efficiency is ageing with measurement.Meet the needs of marine environmental monitoring, there is significant practicality.
Claims (8)
1. a kind of vertical type columnar microorganism reactor it is characterised in that: include reactor cavity, reactor base, netted micro- life
Thing bed, dissolved oxygen detecting electrode, temperature-controlling system and stirring system, temperature-controlling system is by temperature sensor and semiconductor heat booster structure
Become, stirring system is made up of magnetic agitation pump and circulation line；Reactor cavity is placed in reactor base, netted microorganism
Bed, dissolved oxygen detecting electrode, temperature-controlling system temperature sensor are placed in reactor cavity body, the semiconductor heat booster of temperature-controlling system and
The magnetic agitation pump of stirring system is placed in reactor base, and the circulation line of stirring system is placed in the cylinder cover of reactor cavity
External side, described circulation line upper end is from the circular cylindrical shell end cap insertion reaction device cavity top of described reactor cavity, described
The top of circulation line lower end insertion reaction device base, reactor cavity bottom is connected by circulation line with top；Reactor cavity
Body is for cylinder-like structure, and reactor base is cylindrical structure, and the depression on reactor base top is uncovered and reactor cavity
Bottom connects, and reactor cavity and reactor base are vertically connected with and form the hermetic container accommodating seawater sample to be measured, described net
Shape microorganism bed is netted cylindrical structure, is placed in the middle part of reactor cavity, is fixed on circular cylindrical shell inwall, netted microorganism
Reactor cavity is divided into upper and lower two parts by bed, and upper and lower two parts are connected by the mesh of netted microorganism bed, netted microorganism
The cylindrical central axis of bed and reactor cavity central axes, the whole cylindrical wall of described netted microorganism bed with anti-
Device cavity circular cylindrical shell contact internal walls are answered to connect.
2. vertical type columnar microorganism reactor according to claim 1 is it is characterised in that the net of described netted microorganism bed
Hole aperture is 1.5～2.0 millimeters.
3. vertical type columnar microorganism reactor according to claim 1 is it is characterised in that the internal diameter of described reactor cavity
For 60 millimeters, depth is 100 millimeters, and dischargeable capacity is 280 milliliters.
4. vertical type columnar microorganism reactor according to claim 1 is it is characterised in that described dissolved oxygen detecting electrode is inserted
Enter in reactor cavity body and pass through netted microorganism bed, dissolved oxygen detecting electrode is fixed on circular cylindrical shell end cap by locking differential
On；Described dissolved oxygen detecting electrode is connected with the single-chip microcomputer of outside calculation control unit.
5. vertical type columnar microorganism reactor according to claim 1 is it is characterised in that described circulation line is placed in reaction
Outside device cavity circular cylindrical shell, circulation line upper end, from reactor cavity circular cylindrical shell end cap insertion reaction device cavity top, is followed
The depression on endless tube road lower end insertion reaction device base top is uncovered, by reactor cavity bottom and reactor base top with anti-
Device cavity top is answered to connect.
6. vertical type columnar microorganism reactor according to claim 1 is it is characterised in that described magnetic agitation pump is embedded
Formula mixing pump, the depression being arranged on reactor base is uncovered interior；Described semiconductor heat booster is arranged on the depression of reactor base
Uncovered interior, on magnetic agitation pump, it is the seawater sample to be measured heating of reactor cavity bottom, what magnetic agitation pump stirred adds
Heat can comparatively fast be distributed by hot water sample current.
7. vertical type columnar microorganism reactor according to claim 1 is it is characterised in that described semiconductor heat booster surface
With insulating waterproof layer.
8. vertical type columnar microorganism reactor according to claim 1 is it is characterised in that described temperature sensor is arranged on
On reactor cavity circular cylindrical shell end cap, in the measuring probe insertion reaction device cavity of temperature sensor, with seawater sample to be measured
Contact；Described temperature sensor is connected with the single-chip microcomputer of outside calculation control unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410025738.3A CN103713027B (en) | 2014-01-20 | 2014-01-20 | Vertical type columnar microorganism reactor |
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| CN201410025738.3A CN103713027B (en) | 2014-01-20 | 2014-01-20 | Vertical type columnar microorganism reactor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105738589A (en) * | 2016-02-03 | 2016-07-06 | 华北水利水电大学 | Calibration liquid tank of SEBA-UnilogCom on-line water quality monitoring system |
| CN105842315B (en) * | 2016-03-17 | 2018-09-11 | 中国科学院电子学研究所 | A kind of electrode sensitive layer for biochemical oxygen demand (BOD) detection |
| CN105784943B (en) * | 2016-03-31 | 2018-03-27 | 中国科学院重庆绿色智能技术研究院 | A kind of device and method for simulating rotary biofilm reactor running status |
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| JP3664888B2 (en) * | 1998-08-28 | 2005-06-29 | 富士電機ホールディングス株式会社 | BOD biosensor measuring device |
| CN101029891A (en) * | 2007-03-27 | 2007-09-05 | 国家海洋技术中心 | Float plant primary production measuring equipment and its determination |
| CN201707312U (en) * | 2010-05-27 | 2011-01-12 | 江苏同和涂装机械有限公司 | Fast BOD determinator of reactor type biosensor |
| CN203249892U (en) * | 2013-04-17 | 2013-10-23 | 陈威 | Biochemical oxygen demand measuring device |
| CN203672825U (en) * | 2014-01-20 | 2014-06-25 | 国家海洋技术中心 | Vertical columnar microbial reactor |
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