CN103713027A - Vertical type columnar microorganism reactor - Google Patents

Vertical type columnar microorganism reactor Download PDF

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Publication number
CN103713027A
CN103713027A CN201410025738.3A CN201410025738A CN103713027A CN 103713027 A CN103713027 A CN 103713027A CN 201410025738 A CN201410025738 A CN 201410025738A CN 103713027 A CN103713027 A CN 103713027A
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reactor
microorganism
reactor cavity
cavity
netted
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CN201410025738.3A
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CN103713027B (en
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张世强
宋正超
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National Ocean Technology Center
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National Ocean Technology Center
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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

Vertical column microorganism reactor
Technical field
The present invention relates to water quality monitoring instrument, particularly relate to the surveying instrument of seawater mesophytization oxygen demand.
Background technology
Biochemical oxygen demand (BOD) is one of leading indicator of seawater quality monitoring.The standard method that BOD measures is on-site sampling lab analysis, water sample is cultivated 5 days under 20 ℃ ± 1 ℃ condition, and working sample is cultivated the dissolved oxygen value of front and back respectively, and the difference of the two is the dissolved oxygen DO that microbial degradation organism consumes, conventionally claim bod on the five, with BOD 5represent.This method complicated operation, consuming time, effort, poor in timeliness, therefore, the technical research of BOD Quick Measurement and on-line measurement constantly makes progress.Existing BOD method for fast measuring has microorganism film technique and microorganism reactor method.
Adopting the critical component of the BOD instrument for quick measuring of microorganism reactor method is microorganism reactor.The existing BOD instrument for quick measuring common volume of microorganism reactor used is larger, from 900 milliliters to 3 liters, and is to be formed by connecting by several parts, lacks globality, is not integrated survey sensor.
Fig. 1 shows the cross section structure of existing a BOD instrument for quick measuring annular microorganism reactor used, and described annular microorganism reactor is the large-scale combined device of annular reactor cavity A2, dissolved oxygen DO test chamber A8 and ebullator A6 and connecting line A7 formation.
In annular reactor cavity A2, place many tubular microbial bed A4, tubular microbial bed A4 flows with water sample in annular reactor cavity A2, and ebullator A6 provides water sample mobile power in annular reactor cavity A2.Dissolved oxygen DO test chamber A8 is communicated with by connecting line A7 with annular reactor cavity A2, and dissolved oxygen DO detecting electrode A1 is arranged in dissolved oxygen DO test chamber A8.On the inwall of tubular microbial bed A4, adhere to a large amount of microorganism species, microorganism species is by the oxidation operation of water sample in annular reactor cavity A2, the pipeline that water sample in annular reactor cavity A2 connects through ebullator A6 enters ebullator A6, the pipeline being connected with dissolved oxygen DO test chamber A8 through ebullator A6 again enters dissolved oxygen DO test chamber A8, the last pipeline being connected with reactor cavity A2 through dissolved oxygen DO test chamber A8 is again got back to annular reactor cavity A2, complete circulation, dissolved oxygen DO detecting electrode A1 detects the oxygen utilization in short-term of microorganism species simultaneously, and calculate total oxygen utilization (oxygen utilization on the five).The mensuration of BOD need to be carried out under steady temperature, and wire-wound resistor formula well heater A5 is positioned at the central authorities of annular reactor cavity A2, and temperature sensor A3 is immersed in the water sample of annular reactor cavity A2, and 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, tubular microbial bed A4 flows with water sample in annular reactor cavity A2, consumes reagent more, and energy consumption is also bigger than normal.And the large-scale combined device that this reactor is comprised of several parts, lacks globality, maintenance, replacing are very inconvenience, have affected actual use.
Summary of the invention
The existing problem of microorganism reactor for above-mentioned existing BOD fast measurement technique, the present invention releases novel microorganism reactor, fixed gauze bio bed, embedded mixing pump, dissolved oxygen DO detecting electrode are placed in same vertical cylindrical shell, realization response device small-sized integrated, reduced reactor volume, save amount of reagent and energy consumption, be more conducive to maintain and replace.
Vertical column microorganism reactor involved in the present invention is vertical column structure, comprise reactor cavity, reactor base, netted microorganism bed, dissolved oxygen DO detecting electrode, temperature-controlling system and stirring system, temperature-controlling system consists of temperature sensor and semiconductor heat booster, and stirring system consists of magnetic agitation pump and circulation line.Reactor cavity is placed in reactor base, the temperature sensor of netted microorganism bed, dissolved oxygen DO detecting electrode, temperature-controlling system is placed in reactor cavity, the magnetic agitation pump of the semiconductor heat booster of temperature-controlling system and stirring system is placed in reactor base, the circulation line of stirring system is placed in reactor cavity outside, and circulation line is communicated with reactor cavity bottom and top.
Reactor cavity is the container of containing seawater sample to be measured, is cylinder-like structure, is placed in reactor base.Reactor base is cylindrical structure, and top has depression uncovered, and the depression on top is uncovered to be communicated with reactor cavity bottom.The hickey at reactor base top is connected with reactor cavity circular cylindrical shell lower end, and reactor cavity and reactor base are connected to form the closed container that holds seawater sample to be measured up and down.
Netted microorganism bed is netted cylindrical structure, is placed in reactor cavity middle part, is fixed on reactor cavity circular cylindrical shell inwall, and mesh aperture is 1.5～2.0 millimeters.Netted microorganism bed is divided into upper and lower two parts by reactor cavity, and upper and lower two parts are communicated with by the mesh of netted microorganism bed, the cylindrical central axis of netted microorganism bed and reactor cavity central axes.
Magnetic agitation pump is embedded mixing pump, be arranged on the depression of reactor base uncovered in, and be placed in reactor cavity bottom seawater sample to be measured, the horizontal direction flow velocity of seawater sample can be directly provided.
Semiconductor heat booster be arranged on the depression of reactor base uncovered in, be positioned on magnetic agitation pump, be the seawater sample heating to be measured of reactor cavity bottom.Magnetic agitation pump stirs heating water sample and flows, and can comparatively fast dissipation of heat be gone out.
Circulation line is placed in reactor cavity circular cylindrical shell outside, reactor cavity top is inserted from reactor cavity circular cylindrical shell end cap in circulation line upper end, the depression that reactor base top is inserted in circulation line lower end is uncovered, and reactor cavity bottom and reactor base top are communicated with reactor cavity top.
Dissolved oxygen DO detecting electrode inserts in reactor cavity, through netted microorganism bed, and is fixed on the end cap of reactor cavity circular cylindrical shell by locking differential.
Temperature sensor is arranged on reactor cavity circular cylindrical shell end cap, and the measuring sonde of temperature sensor inserts in reactor cavity, contacts with seawater sample to be measured.
Temperature sensor, dissolved oxygen DO detecting electrode, semiconductor heat booster and magnetic agitation pump are connected with the single-chip microcomputer of the outside calculation control unit of microorganism reactor respectively.
Accompanying drawing explanation
Fig. 1 is the annular microorganism reactor cross section structure schematic diagram of prior art;
Fig. 2 is vertical column microorganism reactor structural representation of the present invention.
Description of symbols in figure:
A1, dissolved oxygen DO detecting electrode A2, annular reactor cavity
A3, temperature sensor A4, tubular microbial bed
A5, resistance type heater A6, ebullator
A7, connecting line A8, dissolved oxygen DO test chamber
1, dissolved oxygen DO detecting electrode 2, locking differential
3, temperature sensor 4, water delivering orifice
5, netted microorganism bed 6, reactor cavity
7, semiconductor heat booster 8, water inlet
9, magnetic agitation pump 10, reactor base
11, circulation line
Embodiment
By reference to the accompanying drawings technical scheme of the present invention is described further.As shown in Figure 2, vertical column microorganism reactor involved in the present invention is vertical column structure, comprise reactor cavity 6, reactor base 10, netted microorganism bed 5, dissolved oxygen DO detecting electrode 1, temperature-controlling system and stirring system, temperature-controlling system consists of temperature sensor 3 and semiconductor heat booster 7, and stirring system consists of magnetic agitation pump 9 and circulation line 11.Reactor cavity 6 is placed in reactor base 10, netted microorganism bed 5, dissolved oxygen DO detecting electrode 1, temperature-controlling system temperature sensor 3 are placed in reactor cavity 6, the semiconductor heat booster 7 of temperature-controlling system and the magnetic agitation pump 9 of stirring system are placed in reactor base 10, the circulation line 11 of stirring system is placed in the outside of reactor cavity 6, and circulation line 11 is communicated with the bottom of reactor cavity 6 and top.
Reactor cavity 6 is containers of containing seawater sample to be measured, is cylinder-like structure, is placed in reactor base 10.Reactor base 10 is cylindrical structure, and top has depression uncovered, and the depression on top is uncovered to be communicated with reactor cavity 6 bottoms.The hickey at reactor base 10 tops is connected with the circular cylindrical shell lower end of reactor cavity 6, and reactor cavity 6 is connected to form with reactor base 10 closed container that holds seawater sample to be measured up and down.The internal diameter of reactor cavity 6 is 60 millimeters, and the degree of depth is 100 millimeters, and useful volume is 280 milliliters.Seawater sample to be measured enters from the water inlet 8 on reactor base 10 tops, after reactor balance and water sample measurement, from being positioned at the water delivering orifice 4 on reactor cavity 6 tops, flows out.
Netted microorganism bed 5 is netted cylindrical structure, is placed in the middle part of reactor cavity 6, is fixed on the circular cylindrical shell inwall of reactor cavity 6, and mesh aperture is 1.5～2.0 millimeters.Netted microorganism bed 5 is divided into upper and lower two parts by reactor cavity 6, and upper and lower two parts are communicated with by the mesh of netted microorganism bed 6, the right cylinder central axis of netted microorganism bed 6 and reactor cavity central axes.
Magnetic agitation pump 9 is embedded mixing pump, be arranged on the depression of reactor base 10 uncovered in, and be placed in reactor cavity 6 bottom seawater samples to be measured, the horizontal direction flow velocity of seawater sample can be directly provided.
Semiconductor heat booster 7 be arranged on the depression of reactor base 10 uncovered in, be positioned on magnetic agitation pump 9, be reactor cavity 6 bottom seawater samples heating to be measured.The heating water sample current that magnetic agitation pump 9 stirs can comparatively fast be gone out dissipation of heat.Semiconductor heat booster 7 surfaces are with insulating waterproof layer.
Circulation line 11 is placed in the circular cylindrical shell outside of reactor cavity 6, reactor cavity 6 tops are inserted from the circular cylindrical shell end cap of reactor cavity 6 in circulation line 11 upper ends, the top that reactor base 10 is inserted in circulation line 11 lower ends, is communicated with reactor cavity 6 bottoms and reactor base 10 tops with the top of reactor cavity 6.Magnetic agitation pump 9 stirs the lower mobile seawater sample of horizontal direction, circulates from bottom to top by circulation line 11 simultaneously.
Dissolved oxygen DO detecting electrode 1 inserts in reactor cavity 6, and is fixed on the end cap of reactor cavity 6 circular cylindrical shells by locking differential 2.
Temperature sensor 3 is arranged on the circular cylindrical shell end cap of reactor cavity 6, and the measuring sonde of temperature sensor 3 inserts in reactor cavity 6, contacts with seawater sample to be measured.
Temperature sensor 3, dissolved oxygen DO detecting electrode 1, semiconductor heat booster 7 and magnetic agitation pump 9 are connected with the single-chip microcomputer of the outside calculation control unit of microorganism reactor respectively.
The critical component that the vertical column microorganism reactor the present invention relates to is BOD instrument for quick measuring, is connected to form complete BOD measuring system with volume pump, permanent oxygen device and single-chip microcomputer.
The determination step of BOD measuring instrument comprises reactor balance, water sample measurement, measurement result calculating and reactor balance again, realizes automatic measurement.
While measuring, under the control of the calculation control unit with single-chip microcomputer, volume pump, first by BOD titer (as 2mg/L), with constant flow process permanent oxygen device, then enters reactor through injection port 8.The stirring system that magnetic agitation pump 9 in reactor and circulation line 11 forms is transported to gauze bio bed 5 places by the titer entering in reactor, and makes that in reactor cavity, the concentration of water body is even everywhere.Semiconductor heat booster 7 in reactor, temperature sensor 3 and the single-chip microcomputer being located at outside reactor have formed constant temperature system, and constant temperature system and stirring system are jointly for reactor provides stable reaction environment.The titer reacting in reactor overflows from water delivering orifice 4 automatically, and through after a while, because sample rate is constant, internal-response condition is constant, and oxidation rate is constant, the measured value of the dissolved oxygen DO detecting electrode 1 in the reactor balance that also tends towards stability.Dissolved oxygen DO measured value is now designated as to DO 0.
After system balancing, volume pump switches and enters water sample to be measured, water sample to be measured be also with constant flow through permanent oxygen device, then enter reactor through injection port 8, after reaction and overflow from water delivering orifice 4.Because organic concentration in water sample to be measured is different from BOD titer, the concentration that is entering organic matter of water changes, just there is variation in reaction rate, original equilibrium state is just broken, the increased content of dissolved oxygen DO or reduction, dissolved oxygen DO detecting electrode 1 measured value in reactor also just changes, by switching water sample to be measured after 20 minutes dissolved oxygen DO detecting electrode 1 measured value be designated as DO 1, can be according to variable quantity (the Δ DO=DO of dissolved oxygen DO in 20 minutes reactors 1-DO 0) calculate BOD 5.There is experiment to confirm organic concentration (B0D 5) with the relation of initial oxidation speed (Δ DO) be linear relationship within the specific limits, as shown in the formula:
BOD 5=k△DO+b
In formula, △ DO is the variable quantity of dissolved oxygen DO in 20 minutes reactors; B is intercept, is the B0D of BOD titer 5value; Slope k is the oxidation efficiency coefficient relevant to reactor and reaction conditions.
Complete after one-shot measurement, water sample need be switched to BOD titer again, instrument need be restored to stability, to measure next time.
More than narrate the course of work of the present invention and automatically complete under Single-chip Controlling, the storage of the acquisition of data, calculating, processing and measurement result is all robotization.
The integrated cramped construction of vertical column microorganism reactor the present invention relates to, the specific surface area of gauze bio bed is large, it is large to adhere to flora density, reduced reactor volume, reactor volume only has 280 milliliters, reagent dosage and energy resource consumption have been reduced, there is the features such as volume is little, lightweight, easy and simple to handle, realized the Quick Measurement of BOD, greatly improved the ageing of work efficiency and measurement.Meet the needs of marine environmental monitoring, there is significant practicality.

Claims (9)

1. a vertical column microorganism reactor, it is characterized in that: comprise reactor cavity, reactor base, netted microorganism bed, dissolved oxygen DO detecting electrode, temperature-controlling system and stirring system, temperature-controlling system consists of temperature sensor and semiconductor heat booster, and stirring system consists of magnetic agitation pump and circulation line; Reactor cavity is placed in reactor base, netted microorganism bed, dissolved oxygen DO detecting electrode, temperature-controlling system temperature sensor are placed in reactor cavity, the magnetic agitation pump of the semiconductor heat booster of temperature-controlling system and stirring system is placed in reactor base, the circulation line of stirring system is placed in reactor cavity outside, and circulation line is communicated with reactor cavity bottom and top; Reactor cavity is to be cylinder-like structure, and reactor base is cylindrical structure, and the depression on reactor base top is uncovered to be communicated with reactor cavity bottom, and reactor cavity and reactor base are connected to form the closed container that holds seawater sample to be measured up and down.
2. vertical column microorganism reactor according to claim 1, it is characterized in that, described netted microorganism bed is netted cylindrical structure, be placed in reactor cavity middle part, be fixed on circular cylindrical shell inwall, netted microorganism bed is divided into upper and lower two parts by reactor cavity, and upper and lower two parts are communicated with by the mesh of netted microorganism bed, the cylindrical central axis of netted microorganism bed and reactor cavity central axes.
3. vertical column microorganism reactor according to claim 2, is characterized in that, the mesh aperture of described netted microorganism bed is 1.5～2.0 millimeters.
4. vertical column microorganism reactor according to claim 1, is characterized in that, the internal diameter of described reactor cavity is 60 millimeters, and the degree of depth is 100 millimeters, and useful volume is 280 milliliters.
5. vertical column microorganism reactor according to claim 1, is characterized in that, described dissolved oxygen DO detecting electrode inserts in reactor cavity and through netted microorganism bed, and dissolved oxygen DO detecting electrode is fixed on circular cylindrical shell end cap by locking differential; Described dissolved oxygen DO detecting electrode is connected with the single-chip microcomputer of outside calculation control unit.
6. vertical column microorganism reactor according to claim 1, it is characterized in that, described circulation line is placed in reactor cavity circular cylindrical shell outside, reactor cavity top is inserted from reactor cavity circular cylindrical shell end cap in circulation line upper end, the depression that reactor base top is inserted in circulation line lower end is uncovered, and reactor cavity bottom and reactor base top are communicated with reactor cavity top.
7. vertical column microorganism reactor according to claim 1, is characterized in that, described magnetic agitation pump is embedded mixing pump, be arranged on the depression of reactor base uncovered in; Described semiconductor heat booster be arranged on the depression of reactor base uncovered in, be positioned on magnetic agitation pump, be the seawater sample heating to be measured of reactor cavity bottom, the heating water sample current that magnetic agitation pump stirs can comparatively fast be gone out dissipation of heat.
8. vertical column microorganism reactor according to claim 1, is characterized in that, described semiconductor heat booster surface is with insulating waterproof layer.
9. vertical column microorganism reactor according to claim 1, is characterized in that, described temperature sensor is arranged on reactor cavity circular cylindrical shell end cap, and the measuring sonde of temperature sensor inserts in reactor cavity, contacts with seawater sample to be measured; Described temperature sensor is connected with the single-chip microcomputer of outside calculation control unit.
CN201410025738.3A 2014-01-20 2014-01-20 Vertical type columnar microorganism reactor Expired - Fee Related CN103713027B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN105784943A (en) * 2016-03-31 2016-07-20 中国科学院重庆绿色智能技术研究院 Device and method for simulating operation state of rotary type bio-membrane reactor
CN105842315A (en) * 2016-03-17 2016-08-10 中国科学院电子学研究所 Electrode sensitive layer used for detecting biochemical oxygen demand

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Publication number Priority date Publication date Assignee Title
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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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000074870A (en) * 1998-08-28 2000-03-14 Fuji Electric Co Ltd 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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN105842315A (en) * 2016-03-17 2016-08-10 中国科学院电子学研究所 Electrode sensitive layer used for detecting biochemical oxygen demand
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
CN105784943A (en) * 2016-03-31 2016-07-20 中国科学院重庆绿色智能技术研究院 Device and method for simulating operation state of rotary type bio-membrane reactor
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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