CN102608283B - Method for rapidly determining biodegradale organic matter in inflow water and outflow water of biological filter - Google Patents
Method for rapidly determining biodegradale organic matter in inflow water and outflow water of biological filter Download PDFInfo
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- CN102608283B CN102608283B CN201110024547.1A CN201110024547A CN102608283B CN 102608283 B CN102608283 B CN 102608283B CN 201110024547 A CN201110024547 A CN 201110024547A CN 102608283 B CN102608283 B CN 102608283B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000005416 organic matter Substances 0.000 title abstract description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 10
- 239000001301 oxygen Substances 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims abstract description 8
- 239000000523 sample Substances 0.000 claims description 12
- 239000002028 Biomass Substances 0.000 claims description 3
- 238000003760 magnetic stirring Methods 0.000 claims description 2
- 230000015556 catabolic process Effects 0.000 abstract description 5
- 238000006731 degradation reaction Methods 0.000 abstract description 5
- 230000000813 microbial effect Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract 1
- 238000012805 post-processing Methods 0.000 abstract 1
- 241000894006 Bacteria Species 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 230000001580 bacterial effect Effects 0.000 description 3
- 239000003651 drinking water Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 210000005056 cell body Anatomy 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 230000036284 oxygen consumption Effects 0.000 description 2
- 239000000592 Artificial Cell Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 235000012206 bottled water Nutrition 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 238000006385 ozonation reaction Methods 0.000 description 1
- -1 poly tetrafluoroethylene Polymers 0.000 description 1
- 229940058401 polytetrafluoroethylene Drugs 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
Abstract
The invention relates to a method for rapidly determining a biodegradale organic matter (BOM) in inflow water and outflow water of a biological filter, which is characterized by: firstly, utilizing a filler in the biological filter to determine microbial activity (SOUR) of a water sample; secondly, determining chemical oxygen demand (COD) in water; and finally, deducing through a basic model of organic matter degradation kinetics and calculating the BOM in the water. The method comprises the following steps of: (1) feeing the filler in the biological filter into the water sample, utilizing a dissolved oxygen (DO) meter to record a DO value and time, and calculating to obtain an SOUR value; (2) determining a COD value of the water sample; and (3) calculating the BOM content in the water by utilizing the SOUR value and the COD value through a kinetics model. The method has short operation time, is simple and easy to realize, and can be used for simultaneously determining BOMs in the inflow water and the outflow water of the biological filter, so that the defects that in the prior art, during the determination of the BOM, the time consumption is long, the determination is easily influenced, and the like can be greatly overcome; the biodegradability of the inflow water and the outflow water in the biological filter can be accurately and timely reflected, and a guarantee is provided for post processing and stable operation of the process.
Description
Technical field
The present invention relates to the method in a kind of environmental monitoring technology field, particularly the method for biodegradable organic in a kind of Fast Measurement biological filter, belongs to water quality monitoring technical field.
Background technology
Biological filter refers in drinking water treatment technique: (1), before common process, is used the Biological Pretreatment filter tank of various fillers; (2) filling surface has formed the conventional filter tank of stabilate film; (3) with the grain active carbon of ozonation technology coupling and the biological filter of other filler.Biological filter is widely used in Drinking Water in China treatment process, and object is to remove ammonia nitrogen and organism in water.Biodegradable organic (Biodegradable Organic Matter in the water inlet of biological filter, BOM) concentration has determined that can filter tank well move, and BOM is the required nutrient matrix of heterotrophic bacteria growth and breeding in water outlet, can make not to be sterilized the bacterium that the bacterium that kills or other approach enter water supply network regrows, bacterial population increases, and causes the secondary pollution of water quality.Therefore the amount that, specifies biodegradable organic in the Inlet and outlet water of biological filter is for the optimization of technique and guarantee that water quality safety has great importance.
At present, the mensuration of BOM mainly can be assimilated organic carbon (Assimilable Organic Carbon with biology, AOC), biodegradable dissolved organic carbon (Biodegradable Dissolved Organic Carbon, BDOC) and bacterial growth potentiality (Bacterial Growth Potential, BGP) represent.AOC is the part that can be changed into by bacterium cell body in biodegradable organic, and the breeding with heterotroph in pipe network has close relationship, is that heterotrophic bacteria is directly in order to metabolic matter and energy source.The biodegradable dissolved organic carbon of BDOC is the part that can be utilized by heterotroph (inorganicization and synthetic cell body) in water body organism, is the matter and energy source of the bacteria metabolism of bacterium and other in water.BGP directly reflects the how many index of biodegradable organic matter in water.But these three kinds of methods require higher to test condition and operating personnel, and length consuming time, obtaining data needs the time in several days or several weeks, under so long test procedure, the result that obtains little to the directive significance of water quality monitoring early warning and actual process operational management.Therefore, be necessary to develop the assay method of BOM in a kind of accurate, consuming time biological filter short, simple to operate, for the operation of subsequent treatment and process stabilizing provides safeguard.
Summary of the invention
The object of this invention is to provide the method for biodegradable organic in a kind of Fast Measurement biological filter.The present invention utilizes instrument and operating conditions is required to all very simple microbial activity (Specific Oxygen Uptake Rate, SOUR) and chemical oxygen demand (COD) (COD), is derived and is calculated BOM in water outlet by the dynamic (dynamical) basic model of organic matter degradation.
The step of this method is as follows:
(1) get in the triangular flask that appropriate bio-filter stuffing adds respectively 2 built-in magnet rotors, with containing enough DO(>7 mg/L) biological filter water inlet and water outlet respectively bottle is full of, the rubber stopper of DO probe is installed gently beyond the Great Wall, guaranteeing does not have bubble and biomass not to run off in bottle, with film seal;
(2) open magnetic stirring apparatus, open DO analyzer simultaneously, after stable reading, record DO value and time, every one minute DO value of record and time until DO drops to 1mg/L;
(3) choose the DO value linearly part point at the whole story two that declines in time, the dissolved oxygen value that unit of account chronomere quality filler consumes, i.e. SOUR value, intakes and the SOUR value of water outlet is counted respectively SOUR
0and SOUR
1;
(4) COD of mensuration water inlet and water outlet, counts respectively COD
0and COD
1;
(5) calculate the biodegradable organic BOM of water sample to be measured according to computing formula
0and BOM
1.
Advantage of the present invention: the running time of the present invention is short, simple, has greatly overcome and has measured BOM length consuming time in the past, the shortcoming such as is easily disturbed, and can accurately and timely react the BOM of Inlet and outlet water in biological filter, for subsequent treatment and process parameter control provide safeguard.
Ultimate principle of the present invention is as follows:
In water, the dynamics of organic matter degradation can use formula (1) to represent.
In formula,
-organic matter degradation speed, mg/ (Lt)
In potable water, organic concentration is very low, can be reduced to first order reaction, so can represent to remove organic kinetic model with formula (2).
Because heterotrophic bacteria is to organic conversion process, namely bio-metabolic process, organic oxygenolysis need to consume dissolved oxygen DO.So the relation between oxygen consumption rate and organic matter removal speed can use formula (3) to represent.
In formula,
-related coefficient is constant
Can derive relation between oxygen consumption rate and biodegradable organic by formula (2), (3), obtain formula (4).
Microbial activity (SOUR) definition is that the biology of Board Lot is at the O of unit interval internal consumption
2amount, can be expressed as formula
, formula (4) can be written as formula (5), just obtains thus relation between SOUR and biodegradable organic
Proportion of utilization relation is removed some related coefficients that are difficult to ask for, and can obtain formula (6):
（6）
In formula, BOM
0, BOM
1biodegradable organic content in the water inlet of-biological filter, water outlet;
SOUR
0, SOUR
1microbial activity value in the water inlet of-biological filter, water outlet;
Organic indicator COD comprises two parts: BOM and not biodegradable organism, and in biological treatment process, biodegradable organic is not constant, i.e. the variation of BOM can represent with the variation of COD, therefore there is formula (7):
（7）
In formula, COD
0, COD
1the chemical oxygen demand (COD) of the water inlet of-biological filter, water outlet;
Formula (6) is the main formulas for calculating of this method with formula (7).
Embodiment
For a better understanding of the present invention, below in conjunction with specific embodiment, technical scheme of the present invention is described in further detail.
Take certain biological filter, waterworks Inlet and outlet water as water sample to be measured, preaeration to dissolved oxygen concentration is 9mg/L, getting 2 parts of 10g biofilter materials adds respectively in 2 100ml triangular flasks, with water inlet and water outlet, bottle is full of respectively, the rubber stopper of DO probe is installed gently beyond the Great Wall, guaranteeing does not have bubble and biomass not to run off in bottle, seals with poly tetrafluoroethylene.With magnetic agitation meter rapid stirring, open DO analyzer simultaneously, after stable reading, record DO value and time, read DO value until DO drops to 1mg/L every one minute, calculate the SOUR value of water inlet and water outlet, count SOUR
0and SOUR
1.Separately get Inlet and outlet water sample determination COD value, count COD
0and COD
1.Table 1 has provided water sample SOUR and COD measured value:
Table 1 water sample SOUR and COD measured value
| Title | Numerical value |
| SOUR 0 | 0.13（mgO 2·g -1Filler h -1） |
| SOUR 1 | 0.0356（mgO 2·g -1Filler h -1） |
| COD 0 | 4.87（mg/L） |
| COD 1 | 4.18（mg/L） |
Bring formula (6) and formula (7) into:
Calculate BOM
0=0.95mg/L, BOM
1=0.26mg/L
Can find out by embodiment, the present invention is simple, can draw very soon the numerical value of biodegradable organic in the Inlet and outlet water of biological filter.
In order further to verify this method of testing and the conventional consistance that reflects labile organic compound method of testing in water, its BGP of water determination and biologically active SOUR value that biological filter differing heights is chosen in experiment contrast, and result as shown in Figure 1.
Can be known by Fig. 1, BGP test has reflected in the height water sample of different filter tanks variation tendency that can BOM, and the heterotrophic bacteria biologically active (SOUR) of different filter tanks height water sample and different filter tank height water sample BGP test very high correlativity (R
2=0.97).
Claims (2)
1. measure a method for biodegradable organic in the Inlet and outlet water of biological filter, it is characterized in that comprising following concrete steps:
(1) get in the triangular flask that appropriate bio-filter stuffing adds respectively 2 built-in magnet rotors, with containing enough DO(>7 mg/L) biological filter water inlet, water outlet respectively bottle is full of, the rubber stopper of DO probe is installed gently beyond the Great Wall, guaranteeing does not have bubble and biomass not to run off in bottle, with film seal;
(2) open magnetic stirring apparatus, open DO analyzer simultaneously, after stable reading, record DO value and time, every one minute DO value of record and time until DO drops to 1mg/L;
(3) choose the DO value linearly part point at the whole story two that declines in time, the dissolved oxygen value that unit of account chronomere quality filler consumes, i.e. SOUR value, intakes and the SOUR value of water outlet is counted respectively SOUR
0and SOUR
1;
(4) COD of mensuration water inlet and water outlet, counts respectively COD
0and COD
1;
(5) calculate the biodegradable organic BOM of water sample to be measured according to computing formula
0and BOM
1, described computing formula is:
with
.
2. a kind of method of measuring biodegradable organic in the Inlet and outlet water of biological filter according to claim 1, is characterized in that got bio-filter stuffing is: 5-20g; The volume of the triangular flask of built-in magnet rotor is: 100-500mL.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110024547.1A CN102608283B (en) | 2011-01-24 | 2011-01-24 | Method for rapidly determining biodegradale organic matter in inflow water and outflow water of biological filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110024547.1A CN102608283B (en) | 2011-01-24 | 2011-01-24 | Method for rapidly determining biodegradale organic matter in inflow water and outflow water of biological filter |
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| Publication Number | Publication Date |
|---|---|
| CN102608283A CN102608283A (en) | 2012-07-25 |
| CN102608283B true CN102608283B (en) | 2014-06-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110208458A (en) * | 2019-05-16 | 2019-09-06 | 四川大学 | For studying the experimental rig and method that Degradation Coefficients of Organic Pollutants In A changes under hydrodynamic conditions |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278495B (en) * | 2013-05-17 | 2015-12-09 | 中国人民大学 | Active sludge specific oxygen utilization rate on-line determination device and method in sewage disposal system |
| CN104498347B (en) * | 2014-12-22 | 2016-08-24 | 中国科学院城市环境研究所 | A kind of biooxidation reactions post that can be used for biodegradable organic and microorganism pollution monitoring in water |
| CN104450587B (en) * | 2014-12-22 | 2018-03-23 | 中国科学院城市环境研究所 | It is a kind of to can be applied to biodegradable organic and the mix bacterium agent of microorganism pollution monitoring and preparation method thereof in water |
| CN105158429A (en) * | 2015-09-17 | 2015-12-16 | 哈尔滨工业大学 | Method for measuring content of biodegradable organic carbon (BDOC) in water |
| CN106645612A (en) * | 2016-11-07 | 2017-05-10 | 中国科学院城市环境研究所 | Method for detecting biodegradable dissolved organic carbon based on dissolved oxygen consumption |
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2011
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Patent Citations (5)
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| CN1212053A (en) * | 1996-01-22 | 1999-03-24 | 美商生化科技公司 | Method for monitoring biological activity in fluids |
| US5873997A (en) * | 1996-10-18 | 1999-02-23 | The Academy Of Natural Sciences Of Philadelphia | Bioreactor and method of measuring contaminants in an aqueous environment |
| US6033568A (en) * | 1996-10-18 | 2000-03-07 | Stroud Water Research Center, Inc. | Bioreactor and method of measuring contaminants in an aqueous environment |
| WO2001038869A2 (en) * | 1999-11-22 | 2001-05-31 | Jes Vollertsen | System for determination of wastewater biodegradability |
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Non-Patent Citations (4)
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|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110208458A (en) * | 2019-05-16 | 2019-09-06 | 四川大学 | For studying the experimental rig and method that Degradation Coefficients of Organic Pollutants In A changes under hydrodynamic conditions |
| CN110208458B (en) * | 2019-05-16 | 2021-08-03 | 四川大学 | Test device and method for researching organic matter degradation coefficient change under hydrodynamic condition |
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| CN102608283A (en) | 2012-07-25 |
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