CN110186970A - A kind of sewage treatment plant inflow toxicity on-line measuring device - Google Patents
A kind of sewage treatment plant inflow toxicity on-line measuring device Download PDFInfo
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- CN110186970A CN110186970A CN201910621507.1A CN201910621507A CN110186970A CN 110186970 A CN110186970 A CN 110186970A CN 201910621507 A CN201910621507 A CN 201910621507A CN 110186970 A CN110186970 A CN 110186970A
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- 231100000419 toxicity Toxicity 0.000 title claims abstract description 33
- 230000001988 toxicity Effects 0.000 title claims abstract description 33
- 239000010865 sewage Substances 0.000 title claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 101
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 73
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 239000010802 sludge Substances 0.000 claims abstract description 45
- 238000001514 detection method Methods 0.000 claims abstract description 33
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000001301 oxygen Substances 0.000 claims abstract description 31
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 31
- 238000004140 cleaning Methods 0.000 claims abstract description 25
- 235000015097 nutrients Nutrition 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 239000002699 waste material Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 18
- 238000005273 aeration Methods 0.000 claims description 16
- 239000012528 membrane Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 8
- 230000007797 corrosion Effects 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 6
- 238000013019 agitation Methods 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 5
- 238000003760 magnetic stirring Methods 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 4
- 238000001471 micro-filtration Methods 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 3
- 229920006351 engineering plastic Polymers 0.000 claims description 3
- 235000016709 nutrition Nutrition 0.000 claims description 3
- 230000035764 nutrition Effects 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 235000004458 antinutrient Nutrition 0.000 claims 1
- 238000005086 pumping Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 35
- 230000036387 respiratory rate Effects 0.000 description 12
- 244000005700 microbiome Species 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 231100000331 toxic Toxicity 0.000 description 8
- 230000002588 toxic effect Effects 0.000 description 8
- 231100000167 toxic agent Toxicity 0.000 description 7
- 239000003440 toxic substance Substances 0.000 description 7
- 230000010165 autogamy Effects 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 231100000252 nontoxic Toxicity 0.000 description 4
- 230000003000 nontoxic effect Effects 0.000 description 4
- 230000029058 respiratory gaseous exchange Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009897 systematic effect Effects 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000005064 physico chemical analysis method Methods 0.000 description 2
- 238000004445 quantitative analysis Methods 0.000 description 2
- 235000017281 sodium acetate Nutrition 0.000 description 2
- 239000001632 sodium acetate Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 208000036142 Viral infection Diseases 0.000 description 1
- 208000005735 Water intoxication Diseases 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 231100000584 environmental toxicity Toxicity 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 231100001234 toxic pollutant Toxicity 0.000 description 1
- 230000002110 toxicologic effect Effects 0.000 description 1
- 231100000027 toxicology Toxicity 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
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- Activated Sludge Processes (AREA)
Abstract
The invention discloses a kind of sewage treatment plant inflow toxicity detection devices, including reacting tank main body, reaction tank lid, dissolved oxygen DO electrode, reaction tank cover buckle is in the top of reaction tank, dissolved oxygen DO electrode passes through reaction tank lid and is inserted into reaction tank, sludge peristaltic pump is connect by pipeline with reaction tank and sludge-tank, water sample peristaltic pump is connect by pipeline with reaction tank and water sample pond, micro air pump is connect by pipeline with reaction tank and air filter, nutrient solution peristaltic pump, cleaning solution peristaltic pump is connected respectively at feeding solution with cleaning solution bottle by pipeline, emptying peristaltic pump is connect by pipeline with waste liquid barrel, reacting has agitating device below tank main body.The present invention has the characteristics that easy to operate, easy to maintain, high degree of automation, flexibly configurable, can be applied to the influent quality on-line monitoring of actual sewage factory.
Description
Technical field
The present invention relates to a kind of sewage treatment plant inflow toxicity detection device and detection methods.In real-time monitoring sewage treatment
In factory's secondary settling tank on the basis of the respiratory rate (OUR) of activated sludge, judge influent quality in activated sludge well support microorganism
Active influence belongs to environmental monitoring technology field to be based on real-time early warning to influent quality toxicity.
Background technique
Currently, the most widely used technology of sewage treatment field is activated sludge process, it utilizes micro- life in activated sludge
The metabolism of object, conversion and the polluter in degrading waste water.But increasing industrial wastewater, makes to water environment
While at huge pollution, a large amount of toxicants of generation cause great punching to the normal operation of sewage treatment plant
It hits.When entering the sewage treatment plant using activated sludge process containing virose waste water, the microorganism in activated sludge can be produced
Raw inhibition and toxic action, may result in the unfavorable transformation of microbiologic population, and the bioactivity of inhibitory activity sludge reduces micro-
The treatment effeciency of biology, destroys the normal operation of sewage treatment plant, the effluent quality for eventually leading to sewage treatment plant is not up to standard.Have
Malicious waste water even can make the microorganism of sewage treatment plant lose activity completely.
The measuring method of sewage treatment plant inflow water quality toxicity feature mainly includes physicochemical analysis method and biology
Analysis method.Physicochemical analysis method mainly carries out quantitative analysis to main component in toxic contaminants, can accurately understand
The content of certain toxicant ingredient.But due to water intoxication object qualitative diversity, it is difficult to whole toxicant ingredients all
Quantitative analysis is carried out, unlikely considers the inhibition and synergistic effect between various toxicant ingredients, so can only quantitatively divide
The content for analysing major toxicity material composition in toxic pollutant, cannot reflect that various toxicant ingredients are to environment in pollutant
Combined influence.Biological analysis method as detection method of toxicity, is produced using the organism of environmental pollution or toxicity sensitivity
The evaluation to environmental quality is realized in raw reaction.Bio-toxicity detection method can quickly reflect that various toxicants produce environment
Raw combined influence is a kind of rapid detection method to environmental toxicity composite target.
Bio-toxicity detection method can classify according to the difference of used biological species.It mainly include toxicity in fish
Detection method, flea class detection method of toxicity, algae toxicity detection method, photobacteria detection method of toxicity and activated sludge
Respiratory rate detection method etc..Since the biological subject that activated sludge respiratory rate detection method uses is exactly to be used for sewage treatment
Biology, the result measured to sewage disposal process control have more practical directive significance, be for evaluate sewage plant intake
The ideal method of water quality toxicity.
In the open reactive device equipped with active sludge microorganism, excess substrate matrix is added, and carries out continuing aeration,
Active sludge microorganism is set to reach maximum breathing rate.When dissolved oxygen (DO) concentration of active sludge intermixture reaches stationary value
When, the oxygen transfer rate of mixed liquor is equal to total respiratory rate of active sludge microorganism, at this point, total respiratory rate can be by oxygen transfer
It indicates:
OURtot=KLa(DOs-DOt) (formula 1)
In formula, OURtotFor total respiratory rate of active sludge microorganism in reactor, unit: mg/ (Lmin)；DOtFor
Balance dissolved oxygen after excess substrate is added, unit: mg/L；DOsFor saturated dissolved oxygen；KLaFor oxygen mass transfer coefficients, unit: min-1。
At this point, toxicant is added into open reactive device, the activity of active sludge microorganism will be suppressed, and be caused
Respiratory rate reduces, and the oxygen transfer rate of mixed liquor is caused to be greater than total respiratory rate of active sludge microorganism.Reactor DO is dense
Therefore angle value increases, and reach balance again, and dissolved oxygen at this time is DOt'.Respiratory rate OUR after suppressedtot' calculating
Formula is identical as formula 1.Then the suppressed degree of the respiratory rate of active sludge microorganism indicates are as follows:
It currently, is most effective, phase as the method for sewage treatment plant inflow Toxicological Characterization based on sludge organism activity change
Closing property is best.But current research is mostly using continuous culture formula measuring system, and main problem includes: the 1. interior setting of system
2 dissolved oxygen electrodes, are placed in water inlet, the water outlet of reactor, and there are systematic errors between electrode；2. system can only measure
The water inlet toxicity variation of water quality mutation bring, can not evaluate the absolute toxicity of water sample, i.e., when sample has always the item of steady toxicity
Under part, system is unable to measure out；3. system is relative complex, each unit needs accurate control parameter that could obtain ideal in system
As a result.
Summary of the invention
It is an object of the invention to overcome problem of the prior art and defect, it is relatively easy to provide a kind of system, can be continuous
The sewage treatment plant inflow toxicity detection device and detection method based on OUR analysis of stable operation.It mainly includes 1 mixing
Reaction tank, 1 dissolved oxygen electrode etc., structure is simple, and can eliminate multi-electrode system bring systematic error, while flexible stream
Road combine the configuration of testing process may be implemented to obtain in single measurement period the maximum total respiratory rate of sludge and it is suppressed after
Sludge respiratory rate, index of the ratio as toxicity assessment between the two can evaluate the absolute toxicity rank of water inlet.
The realization of the object of the invention is completed by a series of technical solutions.The sewage treatment plant inflow toxicity inspection
Device is surveyed as shown in Figure 1, detection device includes reaction tank, magnetic agitation module, dissolved oxygen DO electrode, sludge peristaltic pump, water sample
Peristaltic pump, cleaning solution peristaltic pump, emptying peristaltic pump, micro air pump, water sample filter, air filter, gives up at nutrient solution peristaltic pump
Liquid bucket, feeding solution, cleaning solution bottle, signal picker and master control upper computer and a series of pipeline of specifications etc..
Detection device includes reaction tank main body, reaction tank lid, dissolved oxygen DO electrode, and reaction tank cover buckle is in the upper of reaction tank
Side, dissolved oxygen DO electrode pass through reaction tank lid and are inserted into reaction tank, and sludge peristaltic pump passes through pipeline and reaction tank and sludge-tank
Connection, water sample peristaltic pump are connect by pipeline with reaction tank and water sample pond, and micro air pump passes through pipeline and reaction tank and air mistake
Filter connection, nutrient solution peristaltic pump, cleaning solution peristaltic pump are connected with cleaning solution bottle respectively at feeding solution by pipeline, are emptied compacted
Dynamic pump is connect by pipeline with waste liquid barrel, has agitating device below reaction tank main body.
The sludge peristaltic pump connects sludge-tank by pipeline one end, and the other end accesses reaction tank, and sludge end surfaces
The bottom section of reaction tank is sunk to, a certain amount of sludge can be pumped into reaction tank；The water sample peristaltic pump passes through pipeline one
End connection water sample filter, the other end access reaction tank, and water sample filter sinks to the liquid level in water sample pond hereinafter, water sample peristaltic pump
It can will be pumped into reaction tank after a certain amount of water sample filtering to be measured；Described nutrient solution peristaltic pump one end connects feeding solution, separately
Reaction tank is accessed in one end, a certain amount of nutrient solution can be pumped into reaction tank；Described cleaning solution peristaltic pump one end connects cleaning
Bottle, the other end access reaction tank, a certain amount of cleaning solution can be pumped into reaction tank；Emptying peristaltic pump one end connection is useless
Liquid bucket, the other end access the bottom section of reaction tank, can all pump out the medium in reaction tank；Described micro air pump one end
Air filter is connected, the other end is linked into reaction tank, and the end face of tracheae sinks to the bottom section of reaction tank, can be by one
Quantitative clean air is pumped into reaction tank
The agitating device includes magnetic stirring apparatus and sub- power stirrer, and the DO electrode contains temperature sensor, can basis
The medium temperature value of the real time measure carries out temperature correction automatically, and dissolved oxygen DO electrode is inserted into the bottom of reaction tank main body, electrode
Top is connect with signal picker and master control upper computer, and DO electrode is placed in reaction tank, and electrode sensing end face is close to reaction tank
The conducting wire of bottom, electrode accesses signal picker, and the signal after acquisition accesses master control upper computer, has water sample filtering in water sample pond
Device, water sample filter are that hollow-fibre membrane, plane microfiltration membranes or ceramic membrane are constituted.It include control program in master control upper computer, it can
Testing process is edited, and each automatically controlled device according to timing carries out sequential working in control device, and can carry out to the data of acquisition
The functions such as preservation, analysis, processing.
The pipeline of micro air pump connection passes through the bottom that reaction tank lid is inserted into reaction tank main body, water sample peristaltic pump, nutrition
The pipeline that liquid peristaltic pump is connected with cleaning solution peristaltic pump passes through its end of reaction tank lid on the top of reaction tank main body, and emptying is wriggled
Pump is mounted on the lower part of reaction tank main body.
The material of the reaction tank main body is corrosion-resistant engineering transparent plastic or quartz glass, the material of the reaction tank lid
Material is corrosion resistant engineering plastics, is sealed with tank main body junction is reacted.
The present invention also provides the detection method for using above-mentioned sewage treatment plant inflow toxicity detection device, the detection methods
Comprising the process that multiple sequences execute, first starting sludge peristaltic pump, a certain amount of activated sludge is taken out from sludge-tank and is pumped
Enter reaction tank；Then start nutrient solution peristaltic pump, a certain amount of pre-configured carbon and nitrogen sources nutrient solution is taken out from feeding solution
And it is pumped into reaction tank；Start magnetic stirring apparatus, mixed solution under the action of stirrer, while starting micro air pump, to mixing
Liquid carries out high-intensitive aeration；DO value continues to increase in aeration process, the DO value of mixed liquor is read in real time, when DO is worth change in 30 seconds
When change≤0.1mg/L, record current data is DO1, and stops being aerated；The DO value for stopping persistently reading mixed liquor after being aerated continues
The DO value of mixed liquor is read in decline in real time, and when DO was worth variation≤0.1mg/L in 30 seconds, record current data is DO2；It opens
Dynamic emptying peristaltic pump for a period of time, will stop this peristaltic pump after the mixing liquid emptying in reaction tank；It is again started up sludge wriggling
Pump, a certain amount of activated sludge is taken out from sludge-tank and is pumped into reaction tank；Start nutrient solution peristaltic pump simultaneously and water sample is wriggled
A certain amount of nutrient solution and a certain amount of, filtered water sample are pumped into reaction tank by pump simultaneously；Magnetic stirring apparatus is again started up,
Mixed solution under the action of stirrer, while starting micro air pump, high-intensitive aeration is carried out to mixed liquor；DO in aeration process
Value continues to increase, and reads the DO value of mixed liquor in real time, and when DO was worth variation≤0.1mg/L in 30 seconds, record current data is
DO3, and stop being aerated；The DO value for stopping persistently reading mixed liquor after being aerated continues to decline, and reads the DO value of mixed liquor in real time, when
When DO is worth variation≤0.1mg/L in 30 seconds, record current data is DO4；It is again started up emptying peristaltic pump for a period of time, it will be anti-
Stop this peristaltic pump after mixing liquid emptying in Ying Chi；Start cleaning solution peristaltic pump, slight excess of cleaning solution is pumped into instead
Ying Chi after being stirred cleaning to reaction tank, restarts emptying peristaltic pump for cleaning solution and reaction tank is discharged；Finally to the number of acquisition
According to the toxicity value for being handled and being exported water inlet water sample.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of sewage treatment plant inflow toxicity on-line measuring device of the present invention.
Fig. 2 is the detection method schematic diagram of cooperation detection device of the invention.
Fig. 3 is the DO change curve of apparatus of the present invention unitary determination process.
Fig. 4 is the toxicity detection figure of the device of the invention METHOD FOR CONTINUOUS DETERMINATION autogamy water sample.
Specific embodiment
Only invention is further described in detail for following examples, but does not constitute any limitation of the invention.
Embodiment 1
A kind of sewage treatment plant inflow toxicity on-line measuring device, detection device include reaction tank main body 101, reaction tank lid
102, dissolved oxygen DO electrode 3, reaction tank lid 102 are buckled in the top of reaction tank 101, and dissolved oxygen DO electrode 3 passes through reaction tank lid 102
It is inserted into reaction tank 101, sludge peristaltic pump 5 is connect by pipeline with reaction tank 101 and sludge-tank, and water sample peristaltic pump 4 passes through
Pipeline is connect with reaction tank 101 and water sample pond, and micro air pump 6 is connect by pipeline with reaction tank 101 and air filter 13, is sought
Nutrient solution peristaltic pump 7, cleaning solution peristaltic pump 8 are connected by pipeline respectively at feeding solution 16 and cleaning solution bottle 15, and peristaltic pump 9 is emptied
It is connect by pipeline with waste liquid barrel 14, reacting has agitating device below tank main body 101.
The agitating device includes magnetic stirring apparatus 201 and sub- power stirrer 202, and the DO electrode 3 contains temperature sensor,
Temperature correction can be carried out automatically according to the medium temperature value of the real time measure, dissolved oxygen DO electrode 3 is inserted into reaction tank main body 101
Bottom, 3 top of electrode are connect with signal picker 10 and master control upper computer 11, have water sample filter 12, water sample in water sample pond
Filter is that hollow-fibre membrane, plane microfiltration membranes or ceramic membrane are constituted.
The pipeline that micro air pump 6 connects passes through the bottom that reaction tank lid 102 is inserted into reaction tank main body 101, and water sample is wriggled
The pipeline that pump 4, nutrient solution peristaltic pump 7 and cleaning solution peristaltic pump 8 connect passes through its end of reaction tank lid 102 in reaction tank main body
101 top, emptying peristaltic pump 9 are mounted on the lower part of reaction tank main body 101.
The material of the reaction tank main body 101 is corrosion-resistant engineering transparent plastic or quartz glass, the reaction tank lid
102 material is corrosion resistant engineering plastics, is sealed with 101 junction of tank main body is reacted.
Sludge peristaltic pump 5, water sample peristaltic pump 4, nutrient solution peristaltic pump 7, cleaning solution peristaltic pump 8, emptying 9 flow model of peristaltic pump
It encloses for 0.5mL/min~500mL/min, connect with master control upper computer for adjusting flow velocity and runing time.
The gas flow range of the micro air pump 6 is 0.5L/min~1000L/min, and can pass through master control upper computer
Adjust flow path and runing time；The air filter is copper sintered filter core, ceramic element or polyurethane filter core, through aperture
Between 0.2um-100um；The water sample filter is that hollow-fibre membrane, plane microfiltration membranes or ceramic membrane are constituted, wherein film
Through aperture between 0.2 μm~200 μm.
Embodiment 2
This example provides detection means measure activated sludge maximum breathing rate OUR of the present invention and water inlet water sample poison
The measuring method of property I.The first step is starting sludge peristaltic pump 5, and about 15mL sludge is pumped into reaction tank 1, then starts nutrition
Liquid peristaltic pump 7 is pumped into the nutrient solution of about 5mL into reaction tank 1, starts magnetic agitation 2 and micro air pump 6, while acquiring DO electricity
The signal of pole 3；After starting aeration after about 400 seconds, recording current dissolved oxygen value is DO1, is simultaneously stopped aeration, stops aeration about
After 200 seconds, recording current dissolved oxygen value is DO2；Starting emptying peristaltic pump 9 about 30 seconds, the mixed liquor in reaction tank 1 is emptied；
It is again started up sludge peristaltic pump 5, about 15mL sludge is pumped into reaction tank 1, then starts nutrient solution peristaltic pump 7 and water sample simultaneously
Peristaltic pump 4, the toxic water sample of autogamy of the nutrient solution and about 10mL of about 5mL is pumped into reaction tank 1, and autogamy water sample contains 4.0mg/L
Cu2+；Start magnetic agitation 2 and micro air pump 6, while acquiring the signal of DO electrode 3；After starting aeration after about 400 seconds, note
Recording current dissolved oxygen value is DO3, is simultaneously stopped aeration, stops aeration after about 200 seconds, and recording current dissolved oxygen value is DO4；Again
Starting emptying peristaltic pump 9 about 30 seconds, the mixed liquor in reaction tank 1 is emptied.In this process, the dissolved oxygen data of record are bent
Line is as shown in figure 3, DO1 ≈ 12.0mg/L；DO2≈3.7mg/L；DO3≈10.3mg/L；DO4≈5.5mg/L.It can by calculating
Obtain maximum breathing rate OUR=149.40mg/ (Lh).Toxicity value I=42.17%.Illustrate that device that this patent is related to can be with
It is quickly obtained the maximum breathing rate of activated sludge, to evaluate the bioactivity of sludge, while there can also be spirit to toxic water sample
Quick reaction can evaluate the water quality toxicity of water inlet.
The sewage treatment plant inflow toxicity on-line measuring device being related to using this patent, and the detection of the invention according to cooperation
The detection method of device has carried out METHOD FOR CONTINUOUS DETERMINATION to the nontoxic water sample and toxic water sample of autogamy.Wherein the nontoxic water sample of autogamy is
The sodium acetate solution of 0.5g/L, toxic water sample are the mixed sample of the sodium acetate of 0.5g/L and the Cu2+ of 4.0mg/L.Every 30 points
Clock measures a data, wherein 9 groups of nontoxic water determination, 9 groups of toxic water determination.It is as shown in Fig. 4 the reality of METHOD FOR CONTINUOUS DETERMINATION
Data are tested, as it can be seen that the toxicity value I of nontoxic water sample is approximately equal to 11.5% in figure；The toxicity value of toxic water sample is approximately equal to 42.5%, tool
There is significant otherness；And the data deviation of single water determination illustrates that device is stable, does not go out between ± 5%
Now apparent systematic error and measured deviation.
Claims (6)
1. a kind of sewage treatment plant inflow toxicity on-line measuring device, which is characterized in that detection device includes reaction tank main body
(101), reaction tank lid (102), dissolved oxygen DO electrode (3), reaction tank lid (102) are buckled in the top of reaction tank (101), dissolved oxygen
DO electrode (3) passes through reaction tank lid (102) and is inserted into reaction tank (101), and sludge peristaltic pump (5) passes through pipeline and reaction tank
(101) it is connected with sludge-tank, water sample peristaltic pump (4) is connect by pipeline with reaction tank (101) and water sample pond, micro air pump (6)
It is connect by pipeline with reaction tank (101) and air filter (13), nutrient solution peristaltic pump (7), cleaning solution peristaltic pump (8) pass through
Pipeline is connected respectively at feeding solution (16) and cleaning solution bottle (15), and emptying peristaltic pump (9) is connected by pipeline and waste liquid barrel (14)
It connects, there is agitating device below reaction tank main body (101).
2. detection device according to claim 1, which is characterized in that the agitating device includes magnetic stirring apparatus (201)
With sub- power stirrer (202), the DO electrode (3) contains temperature sensor, can according to the medium temperature value of the real time measure automatically into
Trip temperature correction, dissolved oxygen DO electrode (3) are inserted into the bottom of reaction tank main body (101), electrode (3) top and signal picker
(10) and master control upper computer (11) connects, and has water sample filter (12) in water sample pond, and water sample filter is hollow-fibre membrane, puts down
Face microfiltration membranes or ceramic membrane are constituted.
3. detection device according to claim 1, which is characterized in that the pipeline of micro air pump (6) connection passes through reaction tank
Lid (102) is inserted into the bottom of reaction tank main body (101), and water sample peristaltic pump (4), nutrient solution peristaltic pump (7) and cleaning solution are wriggled
The pipeline for pumping (8) connection passes through reaction tank lid (102) its end in the top of reaction tank main body (101), emptying peristaltic pump (9) peace
Mounted in the lower part of reaction tank main body (101).
4. detection device according to claim 1, which is characterized in that the material of reaction tank main body (101) is corrosion resistant
Engineering transparent plastic or quartz glass are lost, the material of the reaction tank lid (102) is corrosion resistant engineering plastics, and is reacted
The sealing of tank main body (101) junction.
5. detection device according to claim 1, which is characterized in that sludge peristaltic pump (5), water sample peristaltic pump (4), nutrition
Liquid peristaltic pump (7), cleaning solution peristaltic pump (8), emptying peristaltic pump (9) range of flow be 0.5mL/min~500mL/min, with
Master control upper computer is connected for adjusting flow velocity and runing time.
6. a kind of detection method of sewage treatment plant inflow toxicity on-line measuring device, which is characterized in that this method includes following
Step: 1. starting sludge peristaltic pump (5), is pumped into sludge into reaction tank (1)；2. then starting nutrient solution peristaltic pump (7), to anti-
Nutrient solution is pumped into Ying Chi (1)；3. starting magnetic agitation (2) and micro air pump (6), after starting aeration after about 400 seconds, record is worked as
Preceding dissolved oxygen value is DO1；4. stopping aeration, stop aeration after about 200 seconds, recording current dissolved oxygen value is DO2；5. starting emptying
Peristaltic pump (9) empties the mixed liquor in reaction tank (1)；6. being again started up sludge peristaltic pump (5), it is pumped into reaction tank (1)
Sludge；7. starting nutrient solution peristaltic pump (7) and water sample peristaltic pump (4) simultaneously, nutrient solution and water sample are pumped into reaction tank (1)；
8. starting magnetic agitation (2) and micro air pump (6), after starting aeration after about 400 seconds, recording current dissolved oxygen value is DO3；9. stopping
It is only aerated, stops aeration after about 200 seconds, recording current dissolved oxygen value is DO4；10. being again started up emptying peristaltic pump (9) will react
Mixed liquor emptying in pond (1)；After starting cleaning solution peristaltic pump (7) is stirred cleaning to reaction tank, it is compacted to restart emptying
Reaction tank (1) is discharged in cleaning solution by dynamic pump (9)；Measurement result calculates and result output.
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