CN101880100B - Water quality improving method by algae control of compound ecological environment-protection algae control agent - Google Patents
Water quality improving method by algae control of compound ecological environment-protection algae control agent Download PDFInfo
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- CN101880100B CN101880100B CN201010222906XA CN201010222906A CN101880100B CN 101880100 B CN101880100 B CN 101880100B CN 201010222906X A CN201010222906X A CN 201010222906XA CN 201010222906 A CN201010222906 A CN 201010222906A CN 101880100 B CN101880100 B CN 101880100B
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Abstract
The invention discloses a water quality improving method by algae control of a compound ecological environment-protection algae control agent, which comprises the following steps: A. area selection: girding an experimental zone; B. algicide preparation: diluting hydrogen peroxide with tap water and arranging the hydrogen peroxide in the shade; C. flocculant preparation: preparing industrial-grade polyferric sulfate into a solution and diluting with water; D. lake sediment preparation: taking pythmic sediments, drying and crushing the sediments, preparing a turbid liquid, and stirring silt sunk into the bottom to the upper layer; E, the dosage and spraying condition of the algicide: uniformly spraying the diluted H2O2 in proportion in an enclosure with surface water bloom and spraying; F. sediment turbid liquid spraying: spraying the turbid liquid in proportion on the water surface in an atomization mode; and G. flocculation sedimentation implementation: sprinkling the polyferric sulfate solution into the water, stirring, standing still and settling. The method is simple and convenient to operate, has low cost, increases transparency, has obvious substrate improvement effect, has zero pollution on the water remediation, and has high environmental, social and economic benefits.
Description
Technical field
The present invention relates to the removal and the water correction technical field of blue-green alga bloom in the eutrophic lake, more specifically relate to a kind of algae control of compound ecological environment-protection agent control algae and improve the method for water quality and substrate, blue-green alga bloom is assembled the serious weather shore or the water correction of arm of lake in the suitable eutrophic lake.
Background technology
Remove algae and its growth of control and be the lake and reservoir water body and recover a difficult problem with protection, the technology that adopts in the world mainly contains three classes at present: 1. engineering method: dredge bed mud, machinery and remove algae, diversion and dash and become silted up etc., but cure the symptoms, not the disease; 2. physical method: supersonic algae removing, but energy consumption is greatly and fundamentally do not suppress the activity of algae, and fragmentary colony and unicellular flocculating effect are poorer, and the multiplication capacity under the stormy waves behind the resuspending is stronger; 3. biological method: as planting high submerged plant and emergent at the weather shore in lake, water transparency and substrate anaerobic state do not improve, and surviving rate is very low, and it is slow to take effect though timeliness is long, and it is bigger influenced by natural climate.Add at present traditional chemical algicide, add molysite promote phosphorus precipitation, add lime denitrogenation etc., but dosing is big and easily cause secondary pollution and transparency to improve limited.This prosperity chemical reagent algicidal method for the moment was also once stranded.The present invention adopts that this oxidisability of hydrogen peroxide is strong, to pollute be that zero chemical reagent kills the blue-green algae cell, be equipped with a certain amount of poly-ferric flocculant and lake sediment again with killed blue-green algae body flocculating settling, thereby reduce the water column nutrient concentrations, improve water transparency, for the water ecology reparation provides condition.This invention is a kind of environmental protection, the economic benefit height, but big area, high-level efficiency are removed the method for algae, can control algae from provenance.
Summary of the invention
The present invention seeks to be to provide a kind of and utilize compound control algae agent to remove the method for polluting arm of lake algae and water wawter bloom, method is easy, and is easy to operate, and cost is low, and the removal effect of the algae in the water body is fairly obvious, has higher environment, society and economic benefit.And improve the water quality and the substrate in lake by the enforcement of this method, good, zero pollution of this method treatment effect, be applicable to that heavily contaminated lake region such as weather shore arm of lake water body is repaired and the improvement of the substrate state of oxidation, the bioremediation technology of transplanting (or sprouting naturally) for higher plant provides precondition.
In order to achieve the above object, the present invention is by the following technical solutions:
Littoral shallow water band in the lake deposits a large amount of higher plant seed banks, because blue algae bloom and the transparent reduction and the substrate anoxic condition of rotting to cause make that the seed bank sprouting condition is limited, make that the weather shore of ecotope health becomes the gathering decline zone of blue-green algae and then develops into naked bank originally, severe water and soil erosion, natural vegetation restoration succession difficulty, the system service of coastal lake bank ecological are worth rapidly and reduce.The applicant uses a kind of zero algicide (hydrogen peroxide, H that pollutes for this reason
2O
2) kill algae and with its flocculating settling, the transparency of water body is improved, for heavy water and the natural germination and growth of enduring the water vegetation seed or artificial growth make up appropriate condition.But experimental session, the blue-green algae throw out of sinking is loose is deposited on the bed mud surface, the ratio of resuspending big (about 34%) under wind wave action, transparency does not reach the improvement of expection.Improve at the experimental design emphasis under the guilding principle of flocculating settling effect, increased the use of lake sediment.Lake sediment can be done stable the combining of following formation of flocculation agent with frond at bodied ferric sulfate, lake sediment proportion is bigger, make the subsidence rate of whole flocs unit rise to 19.2cm/min, can reach the effect of enhancing the transparency in a short time by original 7.3cm/min.And flocs unit blue-green algae resuspending ratio under the disturbance of stormy waves is less, and is about 2%, stormy waves hour, the resuspending ratio is no more than 1%, can keep higher transparency in the long-term time like this, for sprouting and the transplantation rooting of higher plant provides temporal assurance.And contain the oxygen throw out and be deposited to oxygen-rich layer of bed mud surface formation, can effectively suppress the release of bad root phenomenon and the nutritive salt, particularly phosphorus nutrition of plant.
A kind of algae control of compound ecological environment-protection agent control algae is improved the method for water quality, the steps include:
The a-quadrant is selected: impale a trial plot or directly implement the control algae at little water body with soft enclosure (Solid Float Type Oil Containment rubber oil boom, market is on sale) earlier.The effect of enclosure is to build up the water correction district in the part of large-size lake, thereby the realization ecosystem progressively is from the state conversion of muddy water attitude to the clear water attitude;
B algicide preparation: hydrogen peroxide (H
2O
2, massfraction 30%, technical grade, market, various places is all on sale) with tap water or than 10 times of clear water dilutions, the water temperature of dilution water is unsuitable too high, degree centigrade be advisable with (23-26), H
2O
2Pour in the dilution water, gently mix even be placed on shady and cool place and timely the use;
The preparation of C flocculation agent: the bodied ferric sulfate of technical grade is mixed with the solution of 20～25g/L, dilute with water, water also is advisable with tap water, can not sneak into too much organic matter and suspended substance, in order to avoid influence flocculating effect;
The preparation of D lake sediment: get the settling (being bed mud) of Chaohu lakebed, dry or dry the back and pulverize, choose less tiny sedimentary particle through 80 purpose sub-sieves again with pulverizer.It is mixed with the suspension liquid of 10g/L, and fully stirs, the silt that sinks to the bottom is also stirred sneak into the upper strata;
The consumption of E algicide and spraying condition: with the H of above-mentioned steps B dilution
2O
2Be sprayed on equably in 1: 500 ratio in the enclosure of surperficial wawter bloom, spraying time is advisable so that afternoon, 1:00～2:00 was sunny, and the diameter of shower nozzle shunting water column is about 1mm, shortens the time that stops in air as far as possible, control H
2O
2Volatilization, note in the time of sprinkling stirring, mixing direction is a horizontal direction, makes the blue-green algae and the H of upper epidermis
2O
2Mix; Bloom blue algae photosynthetic activity F
v/ F
mJust drop to 0.014 after dropping to 0.037,2 hour rapidly by 0.411 after 1 hour, until completely losing photosynthetic activity, and photosynthetical system is irreversible inactivation, and photosynthetic activity is irrecoverable after the dark adatpation.
F sediment turbid liquid spraying method: suspension liquid is sprayed on the water surface in 1: 25 ratio spray painting formula, in time stir in the time of spray, the residual body of bloom blue algae and the suspension liquid that make water body top layer buoyant lose photosynthetic activity mix, stir angle and be the inclination attitude, guarantee water body level and vertical mixing, also prevent the sedimentation that suspension liquid is too fast;
The method that the G flocculation sediment is implemented: the ratio of polymeric ferrous sulphate solution with 1: 1000 is spilled into the water, and in time stirs, fully leave standstill behind the mixing, make its natural subsidence.After leaving standstill 10 minutes, the water quality of water body promptly is improved.Before suspension chlorophyll reduces to and handles in this moment water column 5.3%, before turbidity is reduced to and handles 5.5%, transparency is by being increased to more than the 1.5m less than 10cm, the ratio that the inactivation frond is deposited to water sludge interface reaches 93.1%, after the simulation high sea disturbance in the water chlorophyll, turbidity ratio increased by 0.8% and 1.0% respectively, this explanation flocculation is in conjunction with stable, and the possibility of resuspending is very little; And frustule sedimentation ratio reaches 96.8%, and than having increased by 3.7% before the disturbance, this shows wave disturbance even has promoted the further sedimentation of the residual body of the floating algae in top layer.
H, when blue-green algae concentration is excessive, can be again when transparency does not reach requiring of expection add reagent as one feels fit and repeat algae flocculation extremely once by above-mentioned steps.
The present invention has following advantage and effect compared with the prior art:
1, build up removable soft enclosure, can shift recycling and kill algae, the algae sedimentation is easy to operate extremely, instant effect;
2, H
2O
2Can be decomposed into H after killing algae
2O and O
2, can not cause the secondary pollution of water body, the Fe element is the macroelement in the earth's crust, can participate in the geochemistry circulation, and consumption is little, can not form the lake region iron pollution;
3, algae speed is fast extremely, and bloom blue algae photosynthetic activity Fv/Fm just drops to 0.014 after dropping to 0.037,2 hour rapidly after 1 hour, completely lose photosynthetic activity, and photosynthetic activity is irrecoverable after the dark adatpation.Blue-green algae colony has lost cytoactive, and the not depolymerization of microscopic examination colony, and cell does not break, and the irreversible inactivation of photosynthetic tissue is even resuspending can not be multiplied as germ plasm resource;
4, lake sediment and blue-green algae form stable complex body under the flocculation agent effect, have not only quickened the sinking velocity of loss of activity frond, and have stoped the resuspending of sedimentation blue-green alga bloom effectively;
5, the very effective transparency that improves water body makes water body so clear that you can see the bottom, and the vegetation that helps the later stage is repaired;
6, the flocculation complex body of lake sediment and frond is deposited in the substrate, and part is the H of complete reaction not
2O
2Fe with strong oxidizing property
3+Can effectively improve the redox state of substrate, make that super eutrophication pollution district mud---the anoxic condition of water termination is transformed into the oxygen enrichment state, effectively stop the continuation of nutritive salt in the heavy substrate of nutrition load to discharge.
7, according to after the control algae flow operations of killing the algae flocculation, leave standstill 10 minutes after, the water quality of water body promptly is improved.Before suspension chlorophyll reduces to and handles in this moment water column 5.3%, before turbidity is reduced to and handles 5.5%, transparency is by being increased to more than the 1.5m less than 10cm, the ratio that the inactivation frond is deposited to water sludge interface reaches 93.1%, after the simulation high sea disturbance in the water chlorophyll, turbidity ratio increased by 0.8% and 1.0% respectively, this explanation flocculation is in conjunction with stable, and the possibility of resuspending is very little; And frustule sedimentation ratio reaches 96.8%, and than having increased by 3.7% before the disturbance, this shows wave disturbance even has promoted the further sedimentation of the residual body of the floating algae in top layer.
Embodiment
Below the present invention is done and describe in further detail.
Embodiment 1:
The flocculation of this kind control algae improve water quality method as follows:
A kind of algae control of compound ecological environment-protection agent control algae is improved the method for water quality, the steps include:
A, zone are selected: at the with serious pollution arm of lake of algal bloom, select its weather shore zone, impale an about district of 200 mu or directly implement the control algae at little water body with soft enclosure (Solid Float Type Oil Containment rubber oil boom, market is on sale) earlier.The effect of enclosure is to build up the water correction district in the part of large-size lake, thereby the realization ecosystem progressively is from the state conversion of muddy water attitude to the clear water attitude;
B, algicide preparation: hydrogen peroxide (by every cubic metre of lake water 0.2L configuration) (H
2O
2, massfraction 30%, technical grade, market, various places is all on sale) with tap water or than 10 times of clear water dilutions, the water temperature of dilution water is unsuitable too high, degree centigrade be advisable with (23 or 24 or 25 or 26), H
2O
2Pour in the dilution water, gently mix even be placed on shady and cool place and timely the use;
The preparation of C, flocculation agent: the bodied ferric sulfate of technical grade is mixed with the solution of 20～25g/L, dilute with water, water also is advisable with tap water, can not sneak into too much organic matter and suspended substance, in order to avoid influence flocculating effect;
The preparation of D, lake sediment suspension liquid: get the settling (being bed mud) of Chaohu lakebed, dry or dry the back and pulverize, choose less tiny sedimentary particle (about water content 8%) through 80 purpose sub-sieves again with pulverizer.It is mixed with the suspension liquid of 10g/L, and fully stirs, the silt that sinks to the bottom is also stirred sneak into the upper strata;
The consumption of E, algicide and spraying condition: with the H of above-mentioned steps (B) dilution
2O
2Be sprayed on equably in 1: 500 ratio in the enclosure of surperficial wawter bloom, sprinkling should select that stormy waves is little opportunity, wind speed is less than sun-drenched afternoon of 3m/s between 1:00～2:00, the diameter of shower nozzle shunting water column is about 1mm, shortens the time that stops in air as far as possible, control H
2O
2Volatilization, note in the time of sprinkling stirring, mixing direction is a horizontal direction, makes the blue-green algae and the H of upper epidermis
2O
2Mixing, can also the eolian circulation in water body top layer be nature mixing power simultaneously; The sunlight direct projection was killed algae two hours down.Bloom blue algae photosynthetic activity Fv/Fm just drops to 0.014 after dropping to 0.037,2 hour rapidly after 1 hour, completely lose photosynthetic activity, and photosynthetic activity is irrecoverable after the dark adatpation;
F, sediment turbid liquid spraying method: kill algae after two hours visible top layer frond show slightly albefaction, add the lake sediment suspension liquid of preparation this moment.Suspension liquid is sprayed on the water surface in 1: 25 ratio spray painting formula, in time stir in the time of spray, the residual body of bloom blue algae and the suspension liquid that make the water body top layer lose photosynthetic activity mix, and stir angle and are the inclination attitude, guarantee water body level and vertical mixing, also prevent the sedimentation that suspension liquid is too fast;
The method that G, flocculation sediment are implemented: in the process that adds lake sediment suspension liquid thorough mixing, stirs, can add polymeric ferric sulfate flocculant solution.The ratio of polymeric ferrous sulphate solution with 1: 1000 is spilled into the water, and in time stirs, fully leave standstill behind the mixing, make its natural subsidence.After leaving standstill 10 minutes, the water quality of water body promptly is improved.Before suspension chlorophyll reduces to and handles in this moment water column 5.3%, before turbidity is reduced to and handles 5.5%, transparency is by being increased to more than the 1.5m less than 10cm, the ratio that the inactivation frond is deposited to water sludge interface reaches 93.1%, after the simulation high sea disturbance in the water chlorophyll, turbidity ratio increased by 0.8% and 1.0% respectively, this explanation flocculation is in conjunction with stable, and the possibility of resuspending is very little; And frustule sedimentation ratio reaches 96.8%, and than having increased by 3.7% before the disturbance, this shows wave disturbance even has promoted the further sedimentation of the residual body of the floating algae in top layer.The improvement of the anoxic condition in the bed mud is longer relatively, needs the reaction of several hrs;
F, when blue-green algae concentration is excessive, can be again when transparency reaches requiring of expection not repeat algae flocculation extremely once by above-mentioned steps E, F, G.
Claims (1)
1. an algae control of compound ecological environment-protection agent control algae is improved the method for water quality, the steps include:
A, zone are selected: impale a trial plot or directly implement the control algae at little water body with soft enclosure earlier;
B, algicide preparation: hydrogen peroxide dilutes 10 times with tap water, and the water temperature of dilution water is 23-26 degree centigrade, and hydrogen peroxide is poured in the dilution water, mixes the even shady and cool place that is placed on;
The preparation of C, flocculation agent: the bodied ferric sulfate of technical grade is mixed with the solution of 20～25g/L, dilute with water;
The preparation of D, lake sediment: settling or the bed mud of getting lakebed, dry or dry the back and pulverize, choose tiny sedimentary particle through 80 purpose sub-sieves again, it is mixed with the suspension liquid of 10g/L with pulverizer, and fully stir, the silt that sinks to the bottom is also stirred sneak into the upper strata;
The consumption of E, algicide and spraying condition: the hydrogen peroxide of above-mentioned steps (B) the dilution ratio in 1: 500 is sprayed in the enclosure of surperficial wawter bloom equably, spraying time is with 1:00～be advisable at 2:00 o'clock in afternoon, the diameter of shower nozzle shunting water column is 1mm, the time that shortening stops in air, H in the control hydrogen peroxide
2O
2Volatilization, stir in the time of sprinkling, mixing direction is a horizontal direction, and the blue-green algae of upper epidermis and hydrogen peroxide are mixed; Bloom blue algae photosynthetic activity F
v/ F
mAfter dropping to 0.037,2 hour by 0.411 after 1 hour, drop to 0.014, until completely losing photosynthetic activity;
F, sediment turbid liquid spraying method: suspension liquid is sprayed on the water surface in 1: 25 ratio spray painting formula, in time stir in the time of spray, the residual body of bloom blue algae and the suspension liquid that make water body top layer buoyant lose photosynthetic activity mix, stir angle and be the inclination attitude, water body level and vertical mixing prevent the sedimentation that suspension liquid is too fast;
The method that G, flocculation sediment are implemented: the ratio of polymeric ferrous sulphate solution with 1: 1000 is spilled into the water, and stirs, fully leave standstill behind the mixing, make its natural subsidence.
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| CN101880100B true CN101880100B (en) | 2011-11-16 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103588380A (en) * | 2013-11-15 | 2014-02-19 | 江苏绿威环保科技有限公司 | Algae mud deep dehydration method by utilizing strong oxidizing agent |
| CN104926000B (en) * | 2015-07-08 | 2017-07-07 | 中国科学院水生生物研究所 | A kind of continuous method of quick removing floating green alga water |
| CN105016524B (en) * | 2015-07-08 | 2017-06-16 | 中国科学院水生生物研究所 | A kind of method for removing floating bristle algae |
| CN105174404A (en) * | 2015-09-28 | 2015-12-23 | 四川鑫淼环保科技有限责任公司 | Water quality improvement method in water ecology restoration |
| CN105152505A (en) * | 2015-09-28 | 2015-12-16 | 四川鑫淼环保科技有限责任公司 | Method for improving basic condition of water ecosystem |
| CN107098480B (en) * | 2017-03-23 | 2020-11-03 | 西安建筑科技大学 | Method for assisting algae dissolving bacteria to dissolve algae and in-situ mixing algae dissolving device |
| CN108409047B (en) | 2018-04-16 | 2020-05-05 | 中国科学院南京地理与湖泊研究所 | Method for systematically controlling rapid proliferation of blue algae cells in lake spring |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1594135A (en) * | 2004-07-02 | 2005-03-16 | 王培军 | Method for eliminating algae hazard in water body |
| CN101139129A (en) * | 2007-08-13 | 2008-03-12 | 袁玉平 | Method for processing blue algae in pool, riverway or lake |
| DE202008012818U1 (en) * | 2008-09-26 | 2010-03-04 | Dynamics Gesellschaft für Umweltschutz u. biologische Verfahrenstechnik mbH & Co.KG | Flocculant for the removal of algae and turbid substances from garden ponds and aquariums |
-
2010
- 2010-07-06 CN CN201010222906XA patent/CN101880100B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1594135A (en) * | 2004-07-02 | 2005-03-16 | 王培军 | Method for eliminating algae hazard in water body |
| CN101139129A (en) * | 2007-08-13 | 2008-03-12 | 袁玉平 | Method for processing blue algae in pool, riverway or lake |
| DE202008012818U1 (en) * | 2008-09-26 | 2010-03-04 | Dynamics Gesellschaft für Umweltschutz u. biologische Verfahrenstechnik mbH & Co.KG | Flocculant for the removal of algae and turbid substances from garden ponds and aquariums |
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