CN102608283A - 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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- CN102608283A CN102608283A CN2011100245471A CN201110024547A CN102608283A CN 102608283 A CN102608283 A CN 102608283A CN 2011100245471 A CN2011100245471 A CN 2011100245471A CN 201110024547 A CN201110024547 A CN 201110024547A CN 102608283 A CN102608283 A CN 102608283A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 22
- 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 8
- 239000000945 filler Substances 0.000 claims abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 8
- 239000001301 oxygen 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
- 230000007547 defect Effects 0.000 abstract 1
- 238000012805 post-processing Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 241000894006 Bacteria Species 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000001580 bacterial effect Effects 0.000 description 3
- 239000003651 drinking water Substances 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
- 230000002503 metabolic effect 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
- 238000009795 derivation 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
- 244000005700 microbiome Species 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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- 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, the method for biodegradable organic belongs to the water quality monitoring technical field in particularly a kind of fast measuring biological filter.
Background technology
The biological filter refers in the drinking water treatment technology: the Biological Pretreatment filter tank of various fillers was used in (1) before common process; (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.The biological filter is widely used in the Drinking Water in China treatment process, and purpose is to remove ammonia nitrogen and organism in the water.Biodegradable organic (Biodegradable Organic Matter in the water inlet of biological filter; Can concentration BOM) have determined the filter tank well move; And BOM is the required nutrient matrix of heterotrophic bacteria growth and breeding in the water outlet; Can make not to be sterilized the bacterium that the bacterium that kills or other approach get into water supply network and to regrow, bacterial population increases, and causes the secondary pollution of water quality.Therefore, in the Inlet and outlet water of clear and definite biological filter the amount of biodegradable organic for the optimization of technology 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 the bacterial growth potentiality (Bacterial Growth Potential, BGP) expression.AOC is the part that can be changed into cell body in the biodegradable organic by bacterium, with the breeding of heterotroph in pipe network confidential relation is arranged, and 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 (inorganicization and synthetic cell body) in the water body organism by heterotroph, is bacterium and the metabolic matter and energy of other microorganism source in the water.BGP directly reflects what index of biodegradable organic matter in the water.But these three kinds of methods require than higher test condition and operating personnel; And length consuming time; Obtain that data needed several days or the time in several weeks, under the 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 weak point, the biological filter simple to operate, for subsequent treatment and process stabilizing operation provide safeguard.
Summary of the invention
The method that the purpose of this invention is to provide biodegradable organic in a kind of fast measuring biological filter.The present invention utilizes and instrument and operating conditions to be required all very simple microbial activity (Specific Oxygen Uptake Rate is SOUR) with COD (COD), through BOM in dynamic (dynamical) basic model derivation of organic matter degradation and the calculating water outlet.
The step of this method is following:
(1) gets in the triangular flask that an amount of bio-filter stuffing adds 2 built-in magnet rotors respectively; 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 the bottle, uses film seal;
(2) open magnetic stirring apparatus, open the DO analyzer simultaneously, record DO value and time after the stable reading, whenever drop to 1mg/L up to DO at a distance from DO value of one minute record and time;
(3) choose the DO value linearly part point at the whole story two that descends in time, the dissolved oxygen value that unit of account chronomere quality filler consumes, i.e. SOUR value is intake and the SOUR value of water outlet is counted SOUR respectively
0And SOUR
1
(4) COD of mensuration water inlet and water outlet counts COD respectively
0And COD
1
(5) according to the biodegradable organic BOM that computing formula is calculated water sample to be measured
0And BOM
1
Advantage of the present invention: running time of the present invention is short, and is simple, greatly overcome and measured BOM length consuming time in the past, is subject to shortcomings such as interferences, can accurately and timely react the BOM of Inlet and outlet water in the biological filter, controls for subsequent treatment and technological parameter to provide safeguard.
Ultimate principle of the present invention is following:
The dynamics of organic matter degradation can be used formula (1) expression in the water.
In the formula;
-organic matter degradation speed, mg/ (Lt)
-organic concentration, mg/L
Organic concentration is very low in the potable water, can be reduced to first order reaction, so can use formula (2) to represent to remove organic kinetic model.
Because heterotrophic bacteria is to organic conversion process, bio-metabolic process just, organic oxygenolysis need consume dissolved oxygen DO.So the relation between OUR and the organic matter removal speed can be used formula (3) expression.
In the formula;
-related coefficient is constant
Can derive between OUR and the biodegradable organic by formula (2), (3) and to concern, obtain formula (4).
Microbial activity (SOUR) definition is the O of the biology of Board Lot at the unit interval internal consumption
2Amount, promptly can be expressed as formula
, formula (4) can be written as formula (5), just obtains thus concerning between SOUR and the biodegradable organic
The proportion of utilization relation is removed some related coefficients that are difficult to ask for, and can obtain formula (6):
In the formula, BOM
0, BOM
1Biodegradable organic content in the water inlet of-biological filter, the water outlet;
SOUR
0, SOUR
1Microbial activity value in the water inlet of-biological filter, the water outlet;
Organic indicator COD comprises two parts: BOM and not biodegradable organism, and in biological treatment process, not biodegradable organism is constant, i.e. the variation of the available COD of variation of BOM is represented, so formula (7) is arranged:
In the formula, COD
0, COD
1The 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 concrete embodiment technical scheme of the present invention is described in further detail.
With certain biological filter, waterworks Inlet and outlet water is water sample to be measured; Preaeration to dissolved oxygen concentration is 9mg/L; Get 2 parts of 10g biofilter materials and add 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 the bottle, seals with poly tetrafluoroethylene.Stir fast with the magnetic agitation meter, open the DO analyzer simultaneously, record DO value and time after the stable reading, whenever read the DO value and drop to 1mg/L until DO at a distance from one minute, calculate the SOUR value of water inlet and water outlet, count SOUR
0And SOUR
1Other gets Inlet and outlet water sample determination COD value, counts COD
0And COD
1Table 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 that through embodiment the present invention is simple, can draw the numerical value of biodegradable organic in the Inlet and outlet water of biological filter very soon.
In order further to verify this method of testing and the conventional consistance that reflects labile organic compound method of testing in the water, its BGP of water determination and biologically active SOUR value that the biological filter differing heights is chosen in experiment contrast, and the result is as shown in Figure 1.
Can know by Fig. 1, but the BGP test has reflected the variation tendency of BOM in the height water sample of different filter tanks that the heterotrophic bacteria biologically active (SOUR) of different filter tanks height water sample has very high correlativity (R with different filter tank height water sample BGP tests
2=0.97).
Claims (3)
1. the method for biodegradable organic in the fast measuring biological filter Inlet and outlet water is characterized in that comprising following concrete steps:
(1) gets in the triangular flask that an amount of bio-filter stuffing adds 2 built-in magnet rotors respectively; 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 the bottle, uses film seal;
(2) open magnetic stirring apparatus, open the DO analyzer simultaneously, record DO value and time after the stable reading, whenever drop to 1mg/L up to DO at a distance from DO value of one minute record and time;
(3) choose the DO value linearly part point at the whole story two that descends in time, the dissolved oxygen value that unit of account chronomere quality filler consumes, i.e. SOUR value is intake and the SOUR value of water outlet is counted SOUR respectively
0And SOUR
1
(4) COD of mensuration water inlet and water outlet counts COD respectively
0And COD
1
(5) according to the biodegradable organic BOM that computing formula is calculated water sample to be measured
0And BOM
1
2. the method for biodegradable organic is characterized in that the bio-filter stuffing of getting is: 5-20g in the Inlet and outlet water of a kind of fast measuring according to claim 1 biological filter; The volume of the triangular flask of built-in magnet rotor is: 100-500mL.
3. the method for biodegradable organic in the Inlet and outlet water of a kind of fast measuring according to claim 1 biological filter is characterized in that said computing formula is:
.
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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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|---|---|---|---|
| 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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| CN102608283A true CN102608283A (en) | 2012-07-25 |
| CN102608283B CN102608283B (en) | 2014-06-18 |
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|---|---|---|---|
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278495A (en) * | 2013-05-17 | 2013-09-04 | 中国人民大学 | Online measuring device and method for specific oxygen uptake rate (SOUR) of activated sludge in sewage treatment system |
| CN104450587A (en) * | 2014-12-22 | 2015-03-25 | 中国科学院城市环境研究所 | Mixed bactericide capable of being applied to monitoring pollution of biodegradable organic matters and microorganisms in water and preparation method thereof |
| CN104498347A (en) * | 2014-12-22 | 2015-04-08 | 中国科学院城市环境研究所 | Biological oxidation reaction column for monitoring pollution of biodegradable organic matters and microorganisms 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 |
| CN115636499A (en) * | 2022-10-24 | 2023-01-24 | 苏州清初环境科技有限公司 | Biodegradability determination method without constant temperature condition |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278495A (en) * | 2013-05-17 | 2013-09-04 | 中国人民大学 | Online measuring device and method for specific oxygen uptake rate (SOUR) of activated sludge in sewage treatment system |
| 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 |
| CN104450587A (en) * | 2014-12-22 | 2015-03-25 | 中国科学院城市环境研究所 | Mixed bactericide capable of being applied to monitoring pollution of biodegradable organic matters and microorganisms in water and preparation method thereof |
| CN104498347A (en) * | 2014-12-22 | 2015-04-08 | 中国科学院城市环境研究所 | Biological oxidation reaction column for monitoring pollution of biodegradable organic matters and microorganisms in water |
| 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 |
| 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 |
| CN115636499A (en) * | 2022-10-24 | 2023-01-24 | 苏州清初环境科技有限公司 | Biodegradability determination method without constant temperature condition |
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|---|---|
| CN102608283B (en) | 2014-06-18 |
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