CN108675439A - A method of selection sewage disposal process regulation measure - Google Patents
A method of selection sewage disposal process regulation measure Download PDFInfo
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- CN108675439A CN108675439A CN201810482068.6A CN201810482068A CN108675439A CN 108675439 A CN108675439 A CN 108675439A CN 201810482068 A CN201810482068 A CN 201810482068A CN 108675439 A CN108675439 A CN 108675439A
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- sludge
- respiratory rate
- temperature
- selection
- sewage disposal
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/10—Temperature conditions for biological treatment
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention discloses a kind of methods of selection sewage disposal process regulation measure, including：(1) to carrying out breathing collection of illustrative plates test under the conditions of activated sludge at the scene temperature and normal temperature (20 DEG C), live respiratory rate is respectively obtainedWith standard respiratory rate(2) live respiratory rate is obtained by calculationPredicted value at 20 DEG C(3) it calculates
Description
Technical field
The invention belongs to sewage treatment fields, are related to a kind of by measuring practical respiratory rate value to sludge and calculating prediction
Respiratory rate value, and analyze it, to which selection is suitble to the regulation measure of sewage treatment plant.
Background technology
Temperature is an important factor for influencing activity of activated sludge and microbial biomass, and many researchs before this also indicate that it to nitrification
The influence of effect is particularly important.When being run in the case of low temperature and seasonal variations, sludge occurs in system for sewage treatment plant
The case where deterioration, such as from autumn to winter, sewage treatment plant encounters cold shock, activated Sludge System deteriorates, and leads to effluent
The case where fluctuation of concentration, happens occasionally.However due to hydraulic detention time long enough etc., water outlet pollutant concentration is not
This deterioration can be reflected in time.Therefore, the feedback control based on effluent characteristics is insecure, because long-term delay is covered
The deterioration of sludge.
To cope with the challenge of seasonal variations, many sewage treatment plants in China can be when selecting to extend sludge retention in winter
Between.However inappropriate extended sludge retention time not only deteriorates the operating environment of sedimentation basin, but also due to substantial increase
Biomass also results in oxygen insufficient supply.Therefore it provides it is a kind of efficiently, easy can find sludge in sludge system in time
Active variation, and suitable regulation measure is selected so that sewage treatment plant is high in the environment of season and temperature change whereby
Even running is imitated, current this field technical problem urgently to be resolved hurrily is become.
Invention content
To solve drawbacks described above existing in the prior art, the purpose of the present invention is to provide a kind of selection sewage disposals
The method of journey regulation measure.In conventional activated sludge system, collection of illustrative plates is breathed by measuring sludge, sludge respiratory rate is carried out
Analysis establishes a kind of method of selection sewage disposal process regulation measure.This method can find dirty in sludge system in time
The active variation of mud, and suitable regulation measure is selected to make sewage treatment plant in the environment of season and temperature change whereby
It is efficiently and smoothly operated.
The present invention is realized by following technical proposals.
A method of selection sewage disposal process regulation measure includes the following steps：
1) it takes the sludge in sludge of sewage treatment plant system as sample, is divided into two parts of equivalent；
2) under the conditions of at the scene, breathing collection of illustrative plates is surveyed to a copy of it mud sample, obtains live respiratory rate
3) breathing collection of illustrative plates at the standard conditions, is surveyed to another mud sample, obtains standard respiratory rate
4) by live respiratory rateIt is updated to Arrhenius equations
It is middle calculate standard respiratory rate predicted value
5) standard respiratory rate is definedWith the predicted value of standard respiratory rateDifference be b,
Work as b<0, then it represents that after sludge system is influenced by temperature change, sludge system is irrecoverable, is dropped at this time to make up
Low bioactivity should preferentially extend hydraulic detention time (HRT) under the limitation of limited biomass；
Work as b>0, then it represents that after sludge system is influenced by temperature change, the bioactivity of activated sludge be it is recoverable, this
When should improve oxygen concentration to improve bioactivity.
Further, the step 2) and the detailed process that 3) middle breathing collection of illustrative plates is tested are：Take sludge in sewage plant aeration tank
0.3L is simultaneously diluted to 1.2L with tap water, measures scene OURs；Later by mud sample by stirring 15s, precipitation 10min, going
Supernatant is settled to 0.6L, and mud is washed 3 times with buffer solution (PBS), measures the endogenous OURq of standard of sludge；It then will be anti-with tap water
It answers active sludge intermixture in device to be settled to 1.2L, measures its endogenous OURe by being aerated 2h to mud sample, add 50g/L
Ammonium chloride survey OURen=OURe+OURn, be eventually adding the anhydrous sodium acetate of 200g/L, ensure that matrix is sufficient, measure total breathing
Rate OURenc=OURe+OURc+OURn.
Further, in the step 2), field condition is the running temperature phase of the temperature and sewage plant that measure breathing collection of illustrative plates
Together.
Further, in the step 3), standard conditions are that the temperature of measurement breathing collection of illustrative plates is 20 DEG C.
Further, in the step 5), sludge system is influenced by temperature change, i.e., temperature is in the range of 5 DEG C~20 DEG C
The influence that sludge is generated when variation.
Further, in the step 5), the common measure of bioactivity for making up reduction has：Introduce additional biological growth
System extends sludge retention time (SRT) or biology addition.
The present invention has the following advantages：
1) easy to operate
Since operating procedure is few and simple, addition medicament is few, has using suitable instrument, such as the green mark water environment science and technology in Xi'an
The WBM400 types sewage treatment plant operating status intellectualized analysis platform that limit company provides, you can automatic in the case of unattended
Change is detected sludge to be detected, can obtain foundation of the enough information as early warning, such asIt can be used as sludge
The alarm signal of the contaminant removal capacity variation of system.
2) rapid efficient, make up the hysteresis quality of existing water factory's regulation index.
The present invention with parameter be not water quality it is this it is non-intuitive characterization sewage plant operating condition index, but pay close attention to
On the core main body sludge of sewage disposal.The oneself state of sludge is only the key for really influencing sewage plant operation.The present invention
The respiratory rate of the sludge used is quicker than effluent quality, and reaction sewage treatment plant that can be more comprehensive was running
The possibility that the sludge corruptions occurred in journey occur, the respiratory rate index based on sludge can be selected accurately accordingly
Regulation measure.
Since OUR is index that is a kind of simple and facilitating monitoring so that present invention may apply in most of operations
Sewage treatment plant.And the present invention can have found the sludge deterioration in the sludge system run at low temperature, for related skill
The method that art personnel provide regulation measure selection.In general, it is a kind of effective method for helping sewage plant management operating.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, not
Inappropriate limitation of the present invention is constituted, in the accompanying drawings：
Fig. 1 is the respiratory rate value under scene and normal temperature；
Fig. 2 is the measured value and predicted value of normal temperature respiratory rate.
Specific implementation mode
Below in conjunction with attached drawing and specific embodiment, the present invention will be described in detail, herein illustrative examples of the invention
And explanation is used for explaining the present invention, but it is not as a limitation of the invention.
It is right that the present invention passes throughWithRelative size analyzed react sludge be subject to it is unfavorable
It influences, and then selects suitable regulation measure, include the following steps：
1) it takes the sludge in sludge of sewage treatment plant system as sample, is divided into two parts of equivalent；
2) at the scene under condition (temperature for measuring breathing collection of illustrative plates is identical as the running temperature of sewage plant), to a copy of it dirt
Mud sample product survey scene breathing collection of illustrative plates
It takes sludge 0.3L in sewage plant aeration tank and is diluted to 1.2L with tap water, measure scene OURs；Later by sludge
Sample washes mud 3 times with buffer solution (PBS), measures sludge by stirring 15s, precipitating 10min, supernatant is gone to be settled to 0.6L
The endogenous OURq of standard；Then active sludge intermixture in reactor is settled to 1.2L with tap water, by being exposed to mud sample
Gas 2h measures its endogenous OURe, and the ammonium chloride for adding 50g/L surveys OURen=OURe+OURn, is eventually adding the anhydrous of 200g/L
Sodium acetate ensures that matrix is sufficient, measures total respiratory rate OURenc=OURe+OURc+OURn.It will be above mentioned all kinds of
OUR primary systems one are denoted as live respiratory rate
3) under standard conditions (temperature for measuring breathing collection of illustrative plates is 20 DEG C), with step 2 to another mud sample mark
Quasi- breathing collection of illustrative platesObtain standard respiratory rate
4) willIt is updated to Arrhenius equationsIn calculate existing
The estimated value of field respiratory rate
5) it definesValue is b, according to b<0 or b>0 is suitable under 5 DEG C~20 DEG C low temperature to select to be suitble to
Close the regulation measure of sewage treatment plant.
Work as b<0, then it represents that after sludge system is influenced by temperature change, sludge system is irrecoverable, is dropped at this time to make up
Low bioactivity should preferentially extend hydraulic detention time (HRT) under the limitation of limited biomass；Make up the biology of reduction
Active common measure has：It introduces additional biological growth system, extend sludge retention time SRT or biology addition；
Work as b>0, then it represents that after sludge system is influenced by temperature change, the bioactivity of activated sludge be it is recoverable, this
When should improve oxygen concentration to improve bioactivity.
Effect is further illustrated the present invention below by specific embodiment.
1) sludge in Xi'an City Sewage Treatment Plant aeration tank is taken, is divided into two parts；
2) the WBM400 type sewage disposal wisdom that selection Xi'an Lv Biao water environments Science and Technology Ltd. provides runs work station
Instrument as detection sludge OUR；
3) test temperature of setting work station is identical as the running temperature of sewage plant, takes sludge 0.3L in sewage plant aeration tank
It is used in combination tap water to be diluted to 1.2L, measures scene OURs；Later by mud sample by stirring 15s, precipitating 10min, remove supernatant
Liquid is settled to 0.6L, and mud is washed 3 times with buffer solution (PBS), measures the endogenous OURq of standard of sludge；Then with tap water by reactor
Interior active sludge intermixture is settled to 1.2L, measures its endogenous OURe by being aerated 2h to mud sample, adds the chlorine of 50g/L
Change ammonium and survey OURen=OURe+OURn, be eventually adding the anhydrous sodium acetate of 200g/L, ensures that matrix is sufficient, measure total respiratory rate
OURenc=OURe+OURc+OURn..Above mentioned all kinds of OUR values can be uniformly denoted as live respiratory rate
4) test temperature of work station is set as 20 DEG C, and the spirogram of mud sample is surveyed with the step identical as step 3)
Spectrum, obtains standard respiratory rate
5) willIt is updated to Arrhenius equationsIn calculate to obtain standard
The predicted value of respiratory rate
6) it calculatesValue is denoted as b, according to b<0 or b>0 come select be suitble to low temperature under be suitble to sewage
The regulation measure for the treatment of plant.
Embodiment is analyzed：
After being monitored breathing collection of illustrative plates to the sludge of the acquirement in the sludge system that runs at different temperatures, scene is obtained
Respiratory rateWith standard respiratory rateAnd by Arrhenius equations
Correction coefficient θ critical-temperature temperature settings be 8 DEG C after, substitute into live respiratory rateCalculate to obtain standard respiratory rate
Predicted valueShown in Temperature Distribution table 1 when wherein sampling when operation of sewage disposal system, corresponding breathing
The variation of rate is as shown in the picture.
Table 1
As shown in Figure 1, although temperature continuously decreases, P3 the and P4 stagesBut it is higher than P1 or P2 stages, institute
After being restored to 20 DEG C of normal temperature by low temperature, sludge can also improve the removal ability of pollutant therewith.In P3 latter stages in stage,Apparent reduction occurs, especiallyShow that apparent deteriorate occurs for the nitrification ability of sludge system.Simultaneously
As shown in Fig. 2, P3 the and P4 stagesIt is relatively low,For positive value.This is because at low temperature,
By thermal stimulus, bioactivity can be restored the active parts of more biologies after temperature recovery to normal temperature, therefore pass through
Such as increase oxygen concentration or raising MLSS carrys out enriched biological matter and can effectively improve the performance of activated Sludge System.
And in the P5 stages, when temperature is less than 8 DEG C of critical-temperature,Increase suddenly, although this is because micro- life
Bioactivity is higher at low temperature for object, but be in a kind of not educable state, while show temperature recovery to normally after,
The amount of recovery of bioactivity is less.At this timeFor negative value, this is reasonable phenomenon, because of some bacteriums
It can not restore in a short time or death can lead to the measured value of respiratory rate in temperature change dramatically
Less than its predicted valueIn this case, when taking the method for increasing biomass, be added to sludge system
Biology can only survive a generation, will not breed the next generation, therefore its enhancement effect can disappear with the discharge of excess sludge.Therefore
Extend hydraulic detention time so that the microorganism of sludge and biology addition can come into full contact with reaction, to remove pollutant.
Therefore, it is better choice that preferential selection, which extends HRT, at this time.
The invention is not limited in above-described embodiments, on the basis of technical solution disclosed by the invention, the skill of this field
For art personnel according to disclosed technology contents, one can be made to some of which technical characteristic by not needing performing creative labour
A little to replace and deform, these are replaced and deformation is within the scope of the invention.
Claims (6)
1. a kind of method of selection sewage disposal process regulation measure, which is characterized in that include the following steps：
1) it takes the sludge in sludge of sewage treatment plant system as sample, is divided into two parts of equivalent；
2) under the conditions of at the scene, breathing collection of illustrative plates is surveyed to a copy of it mud sample, obtains live respiratory rate
3) breathing collection of illustrative plates at the standard conditions, is surveyed to another mud sample, obtains standard respiratory rate
4) by live respiratory rateIt is updated to Arrhenius equationsIt falls into a trap
Calculate standard respiratory rate predicted value
5) standard respiratory rate is definedWith the predicted value of standard respiratory rateDifference be b,
Work as b<0, then it represents that after sludge system is influenced by temperature change, sludge system is irrecoverable, at this time to make up reduction
Bioactivity should preferentially extend hydraulic detention time HRT under the limitation of limited biomass；
Work as b>0, then it represents that after sludge system is influenced by temperature change, the bioactivity of activated sludge is recoverable, is answered at this time
Oxygen concentration is improved to improve bioactivity.
2. a kind of method of selection sewage disposal process regulation measure according to claim 1, which is characterized in that the step
It is rapid 2) to be with 3) the middle detailed process for breathing collection of illustrative plates test：It takes sludge 0.3L in sewage plant aeration tank and is diluted to tap water
1.2L measures scene OURs；Later by mud sample by stirring 15s, precipitating 10min, supernatant is gone to be settled to 0.6L, with slow
It rushes solution PBS and washes mud 3 times, measure the endogenous OURq of standard of sludge；Then active sludge intermixture in reactor is determined with tap water
Hold to 1.2L, measures its endogenous OURe by being aerated 2h to mud sample, the ammonium chloride for adding 50g/L surveys OURen=OURe+
OURn is eventually adding the anhydrous sodium acetate of 200g/L, ensures that matrix is sufficient, measures total respiratory rate OURenc=OURe+OURc+
OURn。
3. a kind of method of selection sewage disposal process regulation measure according to claim 1, which is characterized in that the step
It is rapid 2) in, field condition be measure breathing collection of illustrative plates temperature it is identical as the running temperature of sewage plant.
4. a kind of method of selection sewage disposal process regulation measure according to claim 1, which is characterized in that the step
It is rapid 3) in, standard conditions be measure breathing collection of illustrative plates temperature be 20 DEG C.
5. a kind of method of selection sewage disposal process regulation measure according to claim 1, which is characterized in that the step
It is rapid 5) in, sludge system is influenced by temperature change, i.e., when temperature changes in the range of 5 DEG C~20 DEG C to sludge generate shadow
It rings.
6. a kind of method of selection sewage disposal process regulation measure according to claim 1, which is characterized in that the step
It is rapid 5) in, the common measure of bioactivity for making up reduction has：It introduces additional biological growth system, extend sludge retention time
SRT or biology addition.
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| CN201810482068.6A CN108675439B (en) | 2018-05-18 | 2018-05-18 | Method for selecting regulation and control measures in sewage treatment process |
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| CN201810482068.6A CN108675439B (en) | 2018-05-18 | 2018-05-18 | Method for selecting regulation and control measures in sewage treatment process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113860493A (en) * | 2021-11-22 | 2021-12-31 | 北京工业大学 | Method for promoting starting process of anaerobic ammonia oxidation process at low temperature |
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| CN106745822A (en) * | 2017-02-23 | 2017-05-31 | 西安建筑科技大学 | It is a kind of that method of the active sludge microorganism dormancy with being lost in is differentiated based on breathing collection of illustrative plates |
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2018
- 2018-05-18 CN CN201810482068.6A patent/CN108675439B/en active Active
Patent Citations (3)
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| CN102520016A (en) * | 2011-11-25 | 2012-06-27 | 清华大学 | System and method for monitoring municipal saprobia inhibitive ability in real time based on oxygen uptake rate (OUR) |
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| CN106745822A (en) * | 2017-02-23 | 2017-05-31 | 西安建筑科技大学 | It is a kind of that method of the active sludge microorganism dormancy with being lost in is differentiated based on breathing collection of illustrative plates |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113860493A (en) * | 2021-11-22 | 2021-12-31 | 北京工业大学 | Method for promoting starting process of anaerobic ammonia oxidation process at low temperature |
| CN113860493B (en) * | 2021-11-22 | 2023-09-19 | 北京工业大学 | Method for promoting start-up process of anaerobic ammonia oxidation process at low temperature |
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