CN1562777A - Method for restraining consumed speed rate of oxygen dissolved in polluted water and water quality acidified - Google Patents
Method for restraining consumed speed rate of oxygen dissolved in polluted water and water quality acidified Download PDFInfo
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- CN1562777A CN1562777A CN 200410031173 CN200410031173A CN1562777A CN 1562777 A CN1562777 A CN 1562777A CN 200410031173 CN200410031173 CN 200410031173 CN 200410031173 A CN200410031173 A CN 200410031173A CN 1562777 A CN1562777 A CN 1562777A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 100
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 239000001301 oxygen Substances 0.000 title claims abstract description 47
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000000452 restraining effect Effects 0.000 title 1
- 150000007524 organic acids Chemical class 0.000 claims abstract description 5
- 238000009825 accumulation Methods 0.000 claims abstract description 3
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 claims description 22
- 230000005764 inhibitory process Effects 0.000 claims description 6
- 230000004060 metabolic process Effects 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 4
- 244000005700 microbiome Species 0.000 claims description 4
- 239000000567 combustion gas Substances 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims 1
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 238000000746 purification Methods 0.000 abstract description 2
- 230000001678 irradiating effect Effects 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 8
- 230000006866 deterioration Effects 0.000 description 6
- 230000002906 microbiologic effect Effects 0.000 description 5
- 230000020477 pH reduction Effects 0.000 description 4
- 238000005273 aeration Methods 0.000 description 3
- 238000009395 breeding Methods 0.000 description 3
- 230000001488 breeding effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- JYYOBHFYCIDXHH-UHFFFAOYSA-N carbonic acid;hydrate Chemical compound O.OC(O)=O JYYOBHFYCIDXHH-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002417 nutraceutical Substances 0.000 description 1
- 235000021436 nutraceutical agent Nutrition 0.000 description 1
- 230000004783 oxidative metabolism Effects 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 238000002640 oxygen therapy Methods 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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- Physical Water Treatments (AREA)
Abstract
The invention provides a method for restoring polluted water body of river, lake and reservoir as well as for controlling oxygen consume rate of polluted water body dissolving and water quality acidation. It is to do low-strength large quantity ultraviolet rays irradiating to water body to restrain life action of aerobic and facultative oxygen microbe in in to delay water body dissolving oxygen consume and accumulation of organic acid in metabolizing process, but to ensure them growing and metabolizing in lower rate to make water body keeping self-purification function, thus to increase pollutant load-bearing capacity of water body and delay water quality worsen. The ultraviolet irradiating equipment has flowability and can be operated in continuous type or batch-type.
Description
Technical field
The invention belongs to the technical scope that suppresses water quality deterioration in the environmental improvement, a kind of inhibition polluted water body oxygen update rate and the water quality acidifying method that particularly can repair polluted river, lake and reservoir water body.
Background technology
The water environment pollution of China is very serious, and according to investigation, China has the urban river more than 90% to be subjected to severe contamination.And most urban river has lost the characteristic of natural river, and current are very slow, even water body is immobilized, the river natural reaeration ability non-constant that becomes; On the other hand, because thick population is lived in the urban river two sides, large amount of organic enters the urban river water body in the mode in point source or face source, causes the stream's self-purification ability drop thus, and pollution level increases.
Because city rivers pollution is serious, common waterplant and hydrocoles can't survive therein, and microorganism becomes the dominant in the urban river water body, roughly is divided into aerobic microbiological and anaerobion.The growth and decline of this two quasi-microorganism are determining the conversion characteristic of water quality of river.Under the situation about being polluted in the river, aerobic microbiological utilizes the dissolved oxygen in the water body, decomposes organism in the water body by oxidative metabolism, converts it into to be carbonic acid gas and water, keeps the cleaning of water body; Simultaneously, dissolved oxygen has also suppressed the growth and breeding of anaerobion.After the river was polluted, large amount of organic entered water body, and for aerobic microbiological provides nutraceutical matrix, the aerobic microbiological raised growth causes dissolved oxygen sharply to be consumed.When the wear rate of dissolved oxygen during greater than the reoxygenation speed in river, the water body dissolved oxygen is consumed totally gradually, and aerobic microbiological begins death, and anaerobion begins breeding growth fast.At this moment, the hydrocoles that the dependence dissolved oxygen is breathed in the river water begins death, and river ecological is damaged.The rapid breeding of anaerobic bacterium also produces a series of poisonous and hazardous meta-bolitess, further causes the death of river aquatic macrophyte.The death of river hydrocoles and waterplant causes the destructiveness of river ecological to be damaged.Thereby under the situation that water body is polluted, the key that suppresses water quality deterioration is to manage to keep or improves dissolved oxygen concentration in the water, generally adopts the mode of aeration to the water bottom oxygen supply contaminated water surrounding to be repaired in the world at present.But because this technology is to carry out aeration to whole water body, and the coverage of water of river, lake and reservoir is generally very big, makes that aerator consumption mechanical power is very big, and the cost of building and moving is very high; , water condition complicated river, lake and reservoir big for area, its actually operating is difficult to realize.What is more important, the aeration aerating technology is cured the symptoms, not the disease, and is the remedial measures of taking under the situation that dissolved oxygen has reduced, and this moment, water quality descended, the local forfeiture of function of water body.Therefore, develop simple and easy to doly, with low cost, and can just can slow down the technology that dissolved oxygen reduces at the contaminated initial stage of water body and have very important engineering significance.
Summary of the invention
The purpose of this invention is to provide a kind of inhibition polluted water body oxygen update rate and water quality acidifying method, it is characterized in that: this employing prevention property of method measure, the uv irradiation technology is applied to the water body reparation, by the ultraviolet device to water body with the heavy dose of uv irradiation of low strength, the vital movement that suppresses the aerobic and oxygen animalcule of holding concurrently in the water body is with organic acid accumulation in the consumption that slows down the water body dissolved oxygen and the metabolic process, but guarantees that they make water body keep the function of self-cleaning with lower speed growth metabolism.Thereby improve the pollutant load ability of water body, delay the deterioration of water quality.In addition, the ultraviolet device can flow, also can batch operation, thus strengthened the handiness that water body is repaired means.The concrete practice is:
1) be that the adjustable ultraviolet lamp tube array of intensity of 254nm places portable hull bottom with emission wavelength, utilize clean energies such as sun power that hull power is provided, adopt the gps satellite station-keeping system to realize the hull navigation, implement uv irradiation to zone or the higher zone of oxygen update rate that the water body dissolved oxygen concentration is lower.Regulate the rotating speed of hull bottom agitating vane so that microorganism is fully accepted ultraviolet irradiation according to the turbidity of water body simultaneously.
2) uv irradiation intensity is at 0.5～6mW/cm
2, irradiation time is between 8～50min.Make the water body that is subjected to bigger pollution under the support of any other oxygen therapy technology, the concentration of dissolved oxygen still can remain on more than the 2.0mg/L behind the 8h, and water acidification speed is slowed down.
The invention has the beneficial effects as follows: utilize ultraviolet irradiation to suppress the growth metabolism of aerobic and double oxygen animalcule in the polluted water body, thereby slow down the speed of dissolved oxygen depletion and the fall off rate of water pH value, can not produce secondary pollution, thereby can not destroy the ecosystem of water body yet.And ultraviolet irradiation device carries with hull, has flowability, also can look the water pollution situation and adopt continuously or batch operation, operate more flexible, after input once promptly with lower operation cost.After aerobic and double oxygen animalcule is subjected to the low strength uv irradiation, the metabolism behavior slows down, the wear rate of water oxygen gas reduces greatly, the degradation time of pollutent distributes more even simultaneously, the water acidification phenomenon that is caused by the organic acid that produces in the degradation process is delayed, and has suppressed the deterioration of water quality.
Embodiment
The present invention is a kind of inhibition polluted water body oxygen update rate and water quality acidifying method.This employing prevention property of method measure, the uv irradiation technology is applied to the water body reparation, by the low strength uv irradiation, suppress the aerobic and vital movement of oxygen animalcule of holding concurrently in the water body, pollutent is degraded in mode comparatively slowly, make water body that adequate time reoxygenation comparatively be arranged and delay the fall off rate of dissolved oxygen concentration, avoid simultaneously because the water quality rapid acidification that the organic acid run-up causes.But guarantee that aerobic and anaerobion makes the function of water body maintenance self-cleaning with lower speed growth, thereby the pollutant load ability of raising water body delays the deterioration of water quality.The concrete practice is: with emission wavelength is that the adjustable ultraviolet lamp tube array of intensity of 254nm places portable hull bottom, utilize clean energies such as sun power, electric energy or combustion gas that hull power is provided, adopt the gps satellite station-keeping system to realize the hull navigation, implement uv irradiation to zone or the higher zone of oxygen update rate that the water body dissolved oxygen concentration is lower.Irradiation intensity 1～6mW/cm
2In the irradiation process, regulate the rotating speed of hull bottom agitating vane so that microorganism is fully accepted ultraviolet irradiation according to the turbidity of water body, thereby can within 8min～50min, select uv irradiation time control irradiation dose, and at 2～5mW/cm according to the concentration and the wear rate of irradiation zone dissolved oxygen
2Scope in select irradiation intensity to suppress effect to strengthen.Make the water body that is subjected to bigger pollution under the support of any other oxygenation technology, the concentration of dissolved oxygen still can remain on behind the 8h more than the 2.0mg/L, and the acidification rate of water body is retarded simultaneously, thus the rapid deterioration of the water quality that suppresses.
Lifting specific embodiment is below illustrated the present invention.
The present invention tests the water body of Shenzhen's polluted river.Institute's water sampling is after gentle agitation, and oxygen in water concentration is about 5.2～5.3mg/L, and the pH value is about 7.5～7.6, and the water sample turbidity is about 20～30NTU.
Experiment 1: at 1.0mW/cm
2Irradiation intensity under, to water sample respectively irradiation 1min, 2min, 4min, 8min, 16min and 32min, with the water sample that do not have uv irradiation sample in contrast, the results are shown in Table 1 and table 2 shown in.Do not carrying out under the situation of uv irradiation, the DO of contrast water sample just reduced to 2.0mg/L between 3～4 hours, and water sample enters anaerobic state.And when UV irradiation dose only was 1min or 2min, the DO wear rate descended at double, dropped to below the 2.0mg/L behind 6h and 7h respectively, but did not reach optimal control effect.And irradiation time is when reaching 8min, and the dissolved oxygen in the water sample is still maintaining more than the 2.0mg/L behind the 8h.But after irradiation time was brought up to 32min, it is very slow that the decline of dissolved oxygen becomes, and only reduced 0.98mg/L than initial value behind 8h, and the consumption of dissolved oxygen almost completely stops.
The changing down of water sample pH value is also significantly suppressed.Unirradiated sample pH value behind 8h has descended 0.56, the uv irradiation time is respectively 1,2,4,8,16, six samples of 32min, the decline of pH value is respectively 0.34,0.32,0.21,0.18,0.18 and 0.14, is respectively the former 60.725%, 57.125%, 35.725%, 32.125%, 32.1 and 25%.
The changing conditions unit of water sample dissolved oxygen (DO) concentration: mg/L under the different irradiation doses of table 1
| The uv irradiation time (min) | Experimental period (h) |
| ??0??????1??????2??????3??????4??????5??????6??????7??????8 | |
| ????0 ????1 ????2 ????4 ????8 ????16 ????32 | ?5.24???4.64???3.89???2.87???1.55???0.81???0.32???0.03???0.03 ?5.16???4.59???4.15???3.74???3.3????2.8????2.31???1.61???0.86 ?5.13???4.8????4.38???3.98???3.67???3.24???2.83???2.34???1.71 ?5.32???4.95???4.58???4.25???3.99???3.67???3.25???2.61???1.69 ?5.33???4.93???4.57???4.26???4.04???3.78???3.42???2.92???2.11 ?5.25???4.71???4.6????4.53???4.48???4.44???4.38???4.33???4.23 ?5.28???4.88???4.73???4.69???4.63???4.57???4.52???4.44???4.36 |
The changing conditions of water sample pH value under the different irradiation doses of table 2
| The uv irradiation time (min) | Experimental period (h) |
| ???0???????1???????2???????3???????4???????5???????6???????7???????8 | |
| ????0 ????1 ????2 ????4 ????8 ????16 ????32 | ??7.6?????7.54????7.44????7.32????7.16????7.11????7.07????7.05????7.04 ??7.6?????7.54????7.5?????7.45????7.43????7.39????7.35????7.31????7.26 ??7.6?????7.57????7.5?????7.46????7.42????7.38????7.35????7.32????7.28 ??7.51????7.47????7.44????7.42????7.41????7.39????7.38????7.35????7.3 ??7.51????7.48????7.45????7.42????7.41????7.4?????7.39????7.37????7.33 ??7.54????7.47????7.43????7.39????7.38????7.37????7.37????7.36????7.36 ??7.54????7.48????7.46????7.43????7.43????7.42????7.41????7.41????7.4 |
Experiment 2: UV irradiation dose is fixed as 720mWs/cm
2, select 0.5mW/cm respectively
2And 1.0mW/cm
2, 2.0mW/cm
2And 4.0mW/cm
2Two groups of irradiation powers of height, corresponding irradiation time is 24min, 12min, 6min and 3min.Experimental result shown in table 3, the table 4 shows that irradiation power is 0.5mW/cm
2Slightly to be better than irradiation power be 1.0mW/cm and irradiation time is the effect of 24min
2And irradiation time is the effect of 12min; Irradiation power is 2.0mW/cm
2Slightly to be better than irradiation power be 4.0mW/cm and irradiation time is the effect of 6min
2And irradiation time is the effect of 3min.But because control group water sample oxygen consumption rate is very fast, so the effect, the especially irradiation power that adopt the inhibition effect of higher-wattage uv irradiation to be better than the lower-wattage uv irradiation are 2.0mW/cm
2Water sample, though irradiation time has only 6.0min, dissolved oxygen concentration still remains on more than the 2.0mg/L behind the 8h, it is minimum that the reduction of pH value also is that youngster organizes in the sample, this is the effect of having taken into account behind irradiation intensity and the irradiation dose.
Table 3 irradiation power is to the variable effect unit of water sample dissolved oxygen (DO) concentration: mg/L
| Uv irradiation power (mW/cm 2) | Experimental period (h) | |
| ??0??????1??????2??????3??????4??????5??????6??????7??????8 | ||
| Low | ?????0 ????0.5 ????1.0 | ??4.25???2.71???1.38???0.63???0.14???0.03???0.03???0.03???0.03 ??4.27???3.73???2.87???2.31???1.53???0.58???0.18???0.03???0.03 ??4.25???3.38???2.17???1.45???0.64???0.25???0.03???0.03???0.03 |
| High | ????2.0 ????4.0 ????5.0 | ??4.28???3.46???2.26???1.41???0.41???0.03???0.03???0.03???0.03 ??4.28???4.03???3.84???3.53???3.33???3.16???2.97???2.61???2.12 ??4.26???4.06???3.72???3.45???3.09???2.84???2.54???2.06???1.46 |
Table 4 irradiation power is to the variable effect unit of water sample pH value: mg/L
| Uv irradiation power (mW/cm 2) | Experimental period (h) | |
| ??0??????1??????2??????3??????4??????5??????6??????7?????8 | ||
| Low | ?????0 ????0.5 ????1.0 | ?7.5???7.42???7.32???7.26???7.25???7.24???7.24???7.24???7.24 ?7.5???7.45???7.39???7.36???7.33???7.3????7.28???7.26???7.25 ?7.5???7.45???7.38???7.34???7.28???7.26???7.25???7.24???7.24 |
| High | ????2.0 ????4.0 ????5.0 | ?7.5???7.44???7.37???7.3????7.23???7.21???7.2????7.2????7.2 ?7.5???7.48???7.46???7.44???7.41???7.4????7.39???7.38???7.37 ?7.5???7.48???7.45???7.42???7.41???7.39???7.37???7.33???7.31 |
Claims (3)
1. one kind is suppressed polluted water body oxygen update rate and water quality acidifying method, it is characterized in that: this method is to pass through ultraviolet irradiation, the vital movement that suppresses the aerobic and oxygen animalcule of holding concurrently in the water body is with organic acid accumulation in the consumption that slows down the water body dissolved oxygen and the metabolic process, but guarantees that they make water body keep the function of self-cleaning with lower speed growth metabolism; The concrete practice is: with emission wavelength is that the adjustable ultraviolet lamp tube array of intensity of 254nm places portable hull bottom, utilize clean energy that hull power is provided, adopt the gps satellite station-keeping system to realize the hull navigation, implement uv irradiation to zone or the higher zone of oxygen update rate that the water body dissolved oxygen concentration is lower; The rotating speed of regulating the hull bottom agitating vane guarantees that the concentration of oxygen in water still can remain on more than the 2.0mg/L behind the 8h so that microorganism is fully accepted ultraviolet irradiation.
2. according to claim 1 described inhibition polluted water body oxygen update rate and water quality acidifying method, it is characterized in that: described uv irradiation intensity is chosen in 0.5～6mW/cm
2In, irradiation time is between 8～50min.
3. according to claim 1 described inhibition polluted water body oxygen update rate and water quality acidifying method, it is characterized in that: described clean energy is sun power, electric energy or combustion gas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200410031173 CN1259248C (en) | 2004-04-14 | 2004-04-14 | Method for restraining consumed speed rate of oxygen dissolved in polluted water and water quality acidified |
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|---|---|---|---|
| CN 200410031173 CN1259248C (en) | 2004-04-14 | 2004-04-14 | Method for restraining consumed speed rate of oxygen dissolved in polluted water and water quality acidified |
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| CN1562777A true CN1562777A (en) | 2005-01-12 |
| CN1259248C CN1259248C (en) | 2006-06-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102311155A (en) * | 2010-07-05 | 2012-01-11 | 中国科学院城市环境研究所 | Device for inhibiting growth of microbes in water treatment test nutrient liquid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102311155A (en) * | 2010-07-05 | 2012-01-11 | 中国科学院城市环境研究所 | Device for inhibiting growth of microbes in water treatment test nutrient liquid |
| CN102311155B (en) * | 2010-07-05 | 2014-06-11 | 中国科学院城市环境研究所 | Device for inhibiting growth of microbes in water treatment test nutrient liquid |
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| CN1259248C (en) | 2006-06-14 |
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