CN101786745A - Emergent large and medium-sized natural water body algae pollution remediation technique capable of resisting light stormy waves - Google Patents
Emergent large and medium-sized natural water body algae pollution remediation technique capable of resisting light stormy waves Download PDFInfo
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Abstract
The invention discloses an emergent large and medium-sized natural water body algae pollution remediation technique capable of resisting light stormy waves. The steps are as follows: KMnO4 is first used in a water body, the dosage is required to ensure that the water body presents unfadable baby pink, and the organic matter in the oxidated water body pretreats the water body to be remedied; short fibers and flocculant are then added in the pretreated water body, so that flocculi are produced; hydrogen peroxide is then added in the water body, so that the flocculi can float up to the water surface, and flocculus assistant is added in the water body to strengthen the flocculi; and finally, the flocculi on the water surface are captured to finish emergent remediation. The invention can inhibit the activity of algae and flocculate algae, meanwhile, the invention can capture phosphorus and float flocculi to the water surface, the flocculi can resist the impact of normal stormy waves for hours and almost cannot sink and break, and during implementation, toxic and stinky substances in the water body can be treated at the same time. The technique can carry out in-situ water body remediation on a large scale.
Description
Technical field
The present invention relates to a kind of big-and-middle-sized natural water body algae pollution emergency repair process that resists slight stormy waves.
Technical background
Owing to pollute the discharging that exceeds standard, in China's water body nutritive element such as nitrogen phosphorus potassium particularly phosphorus the phenomenon that increases is year by year arranged, present part Jiang Hai lake, the phenomenon of the undue breeding of algae has appearred in landscape water body, has caused the financial loss and the social destabilization phenomenon of lasting for years especially on the outstanding Taihu Lake of wawter bloom phenomenon, Dian Chi and other places.The dead algae toxin that discharges of algae can cause the deterioration of tap water quality, breeding of a large amount of algae and the dead smelly phenomenon of anoxic of rotting to cause water body, the corresponding heavy losses that cause fishery.Anderson DM.Turning back the harmful red tide.Nature in 1997,1997,388:513-514 has summarized current latest developments of administering harmful algae pollution in the world, think in all multi-methods (as chemical method, biological process etc.) effective technology (Anderson, 1997) of perfect this pollution of improvement of none still.
Handle the algae pollution water body at present and mainly contain two class thinkings:
One, kills the algae algal control.Typical method has at present: natural water body---barley straw or the sense of straw corruption and microorganism kill algae, mantoquita or complexing mantoquita poisoning algae, and weedicide kills algae, and phycovirus kills algae.The heavy algae of modified clay flocculation absorption, microwave kills algae, and electricimpulse or hertzian wave kill algae, and algae etc. is killed in radiation; Tap water water source---dioxide peroxide or ozone, hydrogen peroxide kills algae, potassium permanganate kills algae (after the sixties in last century when algae-containing water source water is made tap water, factory usually adds in the water of algae-containing water source and is lower than 0.01% potassium permanganate, to reach deodorizing, help flocculation, reduce the effect of chlorination organism, but the removal of precipitation or air flotation pool need be set in post-order process contain the manganese throw out), utilize shading to suppress algae reproduction.These kill removing algae method purpose is to kill to remove algae and remove the algae toxin, but algal nutrient matter such as phosphorus etc. is not removed from water, and it is not very remarkable therefore water body being improved effect.
Two, remove algae and remove nutritive substance: machinery filter algae is dragged for the removing that algae only is suitable for shallow water or water surface algae; South, Beijing in 2003 moat spillway adopts algae in the flocculation/air floating method removing water in flocculation---air supporting catch algae (Ministry of Water Resources's 948 project demonstration projects for example---; Oldly wait using the poly-iron flocculation treatment blue-green algae of poly-aluminium etc. quietly at Dian Chi Cao Hai) can remove the algae dephosphorization of holding concurrently in theory, but find only to be fit to no stormy waves waters in actual the enforcement except that algae, find then at the medium-and-large-sized water body that stormy waves is arranged that flocs unit is destroyed and can't adopt; Planktonic organism, freshwater mussel, fish eat algae method and are well suited for using in the low-pollution water body, and the high pollution water body can't be implemented because of anoxic; Utilize waterplant competition to remove algae, effect more obviously but very slow.
This two classes technology is not because above-mentioned defective all is suitable for the emergent reparation of natural water body algae pollution.
At present just like Ecological Envionment Research Centre, Chinese Academy of Sciences at the problems referred to above application patent of invention " a kind of ship-type air float algae-removing device and method ", application number 00124828, it is to the effect that: a kind of ship-type air float algae-removing method, adopt the air-dissolved air-float method, comprise and extract former water, mix, flocculation reaction, air supporting, operations such as emission treatment water, it is characterized in that: above-mentioned a whole set of flow process is installed on the ship to be moved, extract former water conservancy project preface and emission treatment water conservancy project preface is to carry out in same waters, after the dissolved air flotation operation, water after the partially disposed is back to the dissolved air flotation operation.This method is easy, can once remove the eutrophication material, reaches the purpose of water body treating.The device that is used for aforesaid method is arranged at ship, and its device layout and compact construction are convenient to automatic control.This technology comes down to a mobile sewage work, the air floatation alga removing step limitation finite space aboard ship, the destruction of wave of avoiding dexterously blowing in to flocs unit, polluted-water is mobile to be polluted but water body can be untreated after defective was to handle, cause needing to water body repetitive decontamination repeatedly, efficient is not high.And comparing nothing with the flocculation-air floating method that Korea S initiates obviously improves.
2008 invention disclosed patent application on August 6, " a kind of ecological algae flocculating material " (application number 200810020707) caused domestic expert's concern, the inventor proposes a kind of ecological algae flocculating material, and natural fiber material by 5～70% and 30～95% natural macromolecular material are formed.Natural fiber material is selected from vegetable fibre and/or animal fibre, and natural macromolecular material is selected from the sticking juice of crab shell derivative and/or shrimp shell derivative and plant, and the sticking juice of plant is no less than 5% in the natural macromolecular material component.The inventor thinks that this algae flocculating material is crude substance, all nontoxic to people, animal, environment and aquatic animals and plants, and algae is had cohesion, absorption, entanglement and net catches effect, and when this algae flocculating material consumption was 0.1～10mg/L, the algae clearance reached on 95%.And the algae that obtains of flocculation coagulates that the body cohesive force is strong, floatability and drainability are good, and algae mud is few, and aftertreatment is very convenient, the red tide of sea that can be used to break out, the emergency processing of fresh water bloom.It is investigated that this invention pilot experiment of rope and postorder establishment method are to set up workplatform, in the localized area, handle that net is caught except that algae then.
But the inventor carries out finding in the repeated experiment to it, this material can be caught the maturation reunion algae about 90% really, but can't remove the algae spore and the scattered young stage single-cell algae that are colloidal state, more can not remove eutrophication material such as phosphorus in the water, this just causes the water body after the reparation that more algae and breeding are rapidly still arranged.Simultaneously only be used for oils with this material, it is all infeasible that the heavy metal class is polluted processing.Its major defect is: this material is by fiber and help the wadding agent to form, helps the wadding agent net of can only building bridge in theory to catch suspended substance, and flocculation ability is poor, so invalid to colloid and dissolved substance; The effect that fiber here plays mainly is to adsorb to contain to help wadding agent algae group, also plays and strengthens the coacervate effect.The inventor repeats in the pilot experiment also to find: 1. a large amount of deep water places algae group is difficult to fish for or sink to the bottom with net, after tens of hours or the stormy waves impact number after ten minutes because uncrosslinked polymer substance rolls into a ball large-scale algae in soluble in water dribbles; 2. nutritive substance and algae spore in the water, the algae young is not removed and causes reappearing a large amount of algae after a couple of days; 3. handling rear region is polluted by the untreated areas drainage flow rapidly.Therefore the inventor thinks, this scheme can not really solve the emergent reparation problem of natural water body.
The inventor thinks must carry out breakthrough improvement to this, that is: 1. introduce and to possess the charge neutrality ability and to catch dissolubility pollutant in the water or the novel material of nutrition ability and require this material can be separately and above-mentioned pollutent formation flocs unit, to eliminate the rapid regenerated condition of algae, this material must be able to make the crosslinked insoluble substance that becomes of polymer substance sex change dissipate to avoid flocs unit simultaneously; 2. make algae after the flocculation float to the water surface and compression voluntarily on can be substantially voluntarily,, reduce sludge volume simultaneously and fish for workload to avoid drainage flow to pollute and the problem of sinking to the bottom is caught in leakage; 3. the come-up flocs unit is difficult for breaing up so that operation easier reduces under stormy waves; Respective handling technology should expand as easily by plant seeds by airplane, ship broadcast, pumping, the contour efficacious prescriptions method of water inlet river direct sending, in water body on a large scale, original position, slightly algae is implemented to remove in wind and wave resistance ground, do not need or only need small number of devices just can really repair at big-and-middle-sized water body, otherwise it is big not only to implement difficulty, and water body flows repair need repeatedly be repeated.
Summary of the invention
The object of the present invention is to provide a kind of big-and-middle-sized natural water body algae pollution emergency repair process that resists slight stormy waves, be applicable to general landscape water body, use in the Jiang Hai lake, can carry out original position water body reparation on a large scale.
In order to reach above-mentioned purpose, solution of the present invention is:
A kind of big-and-middle-sized natural water body algae pollution emergency repair process that resists slight stormy waves the steps include:
The first step is used potassium permanganate KMnO in water body
4, consumption requires to satisfy that water body presents baby pink and continuity is not moved back, and the organism in the oxidation water body carries out pre-treatment to the water body reparation;
Second step added staple fibre and flocculation agent in pretreated water body, produce the fiber reinforcement flocs unit;
The 3rd step added in water body and helps the wadding agent, the fiber reinforcement flocs unit was maximized and because of crosslinked raising intensity; And in water body, adding hydrogen peroxide, decomposition generation gas makes on the fiber reinforcement flocs unit and floats to the water surface; Add and help the order of wadding agent and hydrogen peroxide to exchange;
The 4th step, catch the flocs unit on the water surface, promptly finish emergent the reparation.
The concrete reparation was when described water body was pool, relative immobilized lake: press 0.001%～0.05% of water body weight in advance and add KMnO
4Oxidation of organic compounds makes water body present baby pink and continuity is not moved back; After 30～720 minutes, in pretreated water body, press 0.01～1% of water body weight and add staple fibre, press 0.01～0.1% of water body weight then and add flocculation agent, produce the fiber reinforcement flocs unit by pipeline; Water intaking body weight 0.001～0.2% help wadding agent (available various routines help wadding agent) water in advance blending dispersion (also water in advance blending dispersion not, but need levigately after conveniently broadcasting sowing, be dissolved in water), then with pump or broadcast sowing and be distributed in the water, this moment, more broken fiber reinforcement flocs unit crosslinkedly was combined into large-scale fiber reinforcement flocs unit; Add concentration expressed in percentage by weight again and be 0.5%～10% aqueous hydrogen peroxide solution, amount to H
2O
20.005～0.05% of consumption water intaking body weight is carried out with the pump stirring; The Manganse Dioxide particulate catalysis decomposing hydrogen dioxide solution of fiber reinforcement flocs unit absorption this moment produces a large amount of small oxygen bubbles, floats to the water surface in 1～120 minute; Fish for the come-up flocs unit, finish emergent the reparation.Come-up flocs unit tight thickness can be broken in general stormy waves situation following a few hours, and shearing following a few hours of fishing at the string bag can be broken.Aluminium salt can be sprayed in case of necessity or molysite is crosslinked to improve the water surface shelf time on the come-up flocs unit.
Hydrogen peroxide also can add prior to helping the wadding agent during operation.
Described water body is a river small stream etc. fast during flowing water, can directly press 0.001%～0.05% adding KMnO of water body weight in water body
4, press 0.01～1% of water body weight and add staple fibre, to press 0.01～0.1% of water body weight and add flocculation agent, the adding concentration expressed in percentage by weight is 0.5%～10% aqueous hydrogen peroxide solution, amounts to H
2O
20.005～0.05% of consumption water intaking body weight adds by 0.001～0.2% of water body weight and to help the wadding agent; Requiring said medicine is to add continuously or add simultaneously with different pipelines substantially, causes handling failure to avoid current to take away the part medicine; Treat to fish for after the flocs unit come-up, finish emergent the reparation.
The length of described staple fibre is 0.1～10cm.The easy conglomeration of long fiber or stick in the pasture and water is also caught the water fish class easily when flocculation, too short then reinforced effects is poor.
Described flocculation agent is aluminium salt or molysite.As one of Tai-Ace S 150, polymerize aluminum chloride, double-acid ferro-aluminum, bodied ferric sulfate and poly-ferric chloride or multiple mixture, also extensible is the anodised method of electricity consumption, the anode that will contain aluminium or ferrous components carries out electrooxidation, the stripping metal ion flocculates, and metal ion is with measuring 0.01%～0.1%.If need can not use magnesium salts/lime combination yet,, make it to generate magnesium hydroxide flocculation algae and toxic substance, cost and better effects if with pH regulator to 11～12 with respect to the other biological problem of death.
After adopting such scheme, the present invention adds KMnO in advance in water body
4Effect be to eliminate portion C OD, deodorizing and change the zeta current potential of algae is to improve follow-up flocculating effect.Because KMnO
4Reduzate be Manganse Dioxide, as catalyzer decomposing hydrogen dioxide solution is speeded up, air supporting speed obviously increases.The effect of flocculation agent is to make the interior nutritive substance dissolved phosphorus of water body be converted into the phosphoric acid salt suspended substance, and algae, suspended substance are flocculated together simultaneously; The effect of hydrogen peroxide is to kill algae and spore thereof by allelopathy, algae physiologically active remaining in the algae of come-up and the water is descended, reduce water body COD,, and meet that catalytic decomposition is that oxygen causes flocs unit air supporting behind manganese in the flocs unit, the iron ion to the emergent oxygenation of polluted-water.
Water surface come-up algae obviously descended in microscopically observation activity and procreation speed after the present invention made and handles, and avoided it to leak other water bodys of after stain; Its activity of the remaining algae spore and the algae young and procreation speed also increase decline rapidly with the dioxygen water yield that adds in the treated water body.The hydrogen peroxide consumption generally must not be greater than 0.1%, otherwise the fish a small amount of phenomena of mortality in rollover back earlier often occur.
Need to prove, add KMnO separately
4Carry out the water body pre-treatment and be prior art (use the waterworks, and the big examination of algal control was also carried out with this in the Michigan, United States lake), but the excessive muddy band of the water body look that causes often occurs adding, the divalent manganesetion phenomenon that exceeds standard.Through after the process modification of the present invention, excessive KMnO
4Can be converted into MnO by hydrogen peroxide with divalent manganesetion
2Be adsorbed onto on the flocculation agent, thereby expanded its operability.
Carry out the algae water pre-treatment and handle natural algae polluted-water prior art at present and add hydrogen peroxide separately, but only be used for conductization sense algal control effect.After process combination improvement of the present invention, add hydrogen peroxide and increased the function of generation air supporting with gas, can avoid sea, the natural river of large volume lake pollution to administer in the operation very inconvenient airfloat equipment installs and uses, increased the fiber reinforcement flocs unit/air-float technology that has not yet to see report simultaneously, made really practicability of combination of the present invention.
2～3 grades and wind in natural pond, high about 0.1 meter of wave is under the about 25 degrees centigrade of situations of water temperature in summer, big test result shows: at chrysotile asbestos fibre consumption 0.05%, help wadding agent (cationic PAM polyacrylamide) consumption 0.01%, flocculation agent (polymerize aluminum chloride PAC) consumption 0.05%, KMnO
4Consumption 0.005%, H
2O
2During consumption 0.01% (each material consumption is all based on water body weight), can be more than 6 hours greater than 95% come-up flocs unit in the stable reservation of the water surface, the come-up flocs unit sprayed small amount of aluminum salt or molysite are crosslinked to can further improve more than water surface residence time to 12 hour, there is the enough time to be fished for, handle back water body clarity and rise to 2m from 0.1m, naked eyes can be seen at the bottom of the pond substantially.When ining contrast to without fiber reinforcement+air flotation technology, though under burning sun flocs unit come-up less than 30%, the flocs unit of come-up is quite fragile, at stormy waves or fish for fragmentation immediately off the net and sink to being difficult to again to fish for; Only take the fiber reinforcement flocculation technique, then have a large amount of bulk throw outs in the water body, it is huge and be difficult to drag for clean to fish for workload.Common ground after above-mentioned both of these case is handled is that the water body clarity rises to 0.5m from 0.1cm, and 1m depths water sampling is found a large amount of throw outs.In several days after fiber reinforcement flocculation/air supporting is handled, it is dead that the water body sampling finds that remaining algae continues, but the water body dissolved oxygen is still higher, should be due to the change sense bacteriostatic action of remaining hydrogen peroxide in water body.
This characteristic feature of an invention has used hydrogen peroxide to kill algae for changing sense on the basis of original potassium permanganate pre-treatment algae pollution water body, removes the COD aerogenesis material of holding concurrently, and has used fiber reinforcement flocs unit/air flotation technology to reach simultaneously and has removed the throw out purpose.Big test result finds that this technology in contrast to existing other and variously removes algae and remove the emergent recovery technique of nutritive substance water body, advantage do not need substantially to be use equipment, not disturbed by general stormy waves, fast and can stablize longer timeliness to the removing speed of pollution substance, this technology is invented has very high reference value and exploitativeness for the improvement such as lakes such as Taihu Lake, Dian Chi.
In a word, the present invention can suppress and flocculation algae is active, capture phosphorus simultaneously and will flocculate on float to the water surface, flocs unit can resist conventional stormy waves a few hours to impact the fragmentation of not sinking substantially, poisonous in the water body in the enforcement have sordes matter to obtain processing simultaneously.This technology can be carried out original position water body reparation on a large scale.
Embodiment
Embodiment one
In natural pond, Quanzhou, Fujian Province, carry out the reparation of algae pollution water body.
Use the conventional diving pump, medicine all enters the place of water body near the bottom by pump.Use rope in advance on the water surface, plastic cloth makes things convenient for different methods relatively with the area of isolation that heavy heavy stone used as an anchor is divided into 3 meters of spacings.During operation, 0.005%KMnO
4Add in advance in the water body, the aqueous dispersions of the chrysotile asbestos fibre of elder generation's adding 0.05% in 120 minutes, the back adds 0.05% polymerize aluminum chloride (PAC) flocculation.This moment, water was extremely rose pink.Add 5% aqueous hydrogen peroxide solution subsequently, add-on is amounted to into pure H
2O
2Be 0.01% of water body gross weight, use another dosing pump following adding polyacrylamide (PAM), the PAM consumption is 0.01% of a water body gross weight, and this moment, rising phenomenon appearred in flocs unit very soon.After 1 hour the algae that rises to the water surface is fished for.
At natural pond 2-3 level and wind, wave is high 0.1 meter, under water temperature 25 degrees celsius, can effectively be fished for greater than 95% come-up flocs unit, handles back water body clarity and rises to 2m from 0.1m, and naked eyes can be seen at the bottom of the pond substantially.In contrast to without fiber reinforcement+when the air flotation technology, even flocs unit come-up less than 30% under burning sun, the flocs unit of come-up is quite fragile, fishing for fragmentation immediately off the net at stormy waves or 50 orders sinks again and can't fish for, the water body clarity rises to 0.5m from 0.1cm, and 1m depths water sampling is found a large amount of throw outs.In after treatment several days, it is dead that water body sampling finds that remaining algae continues, but the water body dissolved oxygen is still higher, should be due to the change sense bacteriostatic action of remaining hydrogen peroxide in water body.Do not fish for the area of observation coverage of algae flocs unit after the come-up and find, the phenomenon that sinks under water does not appear in throw out substantially in 6 hours, has enough and fishes for the time.
Pilot experiment is then found under the above-mentioned condition of simulation, flocs unit intensity, the water surface residence time increases with fiber and PAM consumption, carries out crosslinkedly if flocs unit is sprayed aluminium salt or molysite, then can further improve more than the flocs unit intensity and the water surface residence time to 12 hour.
Embodiment two
Carry out the reparation of algae pollution water body in suburb, Quanzhou irrigation canals and ditches section.2 meters of irrigation canals and ditches width, dark about 0.8 meter, bed mud black, about 0.3 meter per second of flow velocity, 4-5 level wind, 29 degrees centigrade of water temperatures.Medicine adds in the irrigation canals and ditches upstream.0.02%KMnO during operation
4Add in advance in the upstream, divide different pipelines to add 0.06%PAC simultaneously in red pool after 1 minute, purity 5% hydrogen peroxide 0.1%, aluminum silicate fiber 0.1%, PAM0.01%.(pure aluminium silicate and PAM mix the back water in advance and disperse).Produce the flocs unit rising phenomenon this moment rapidly.Flocs unit floats to the nearly water surface on being carried secretly downstream while flowing by current, and flocs unit volume and intensity are bigger, can be tackled by the 50 order string bags that nearly water surface place is provided with.Former water body breen is smelly, and it is obviously so clear that you can see the bottom to handle the back water body, and stink obviously reduces, and observation is fished for flocs unit and contained a large amount of algae mud and atrament.In contrast to and only add KMnO
4With the traditional method that PAC handles, though appearring in water body, a large amount of tiny flocs units can not be caught by the string bag, the flocs unit rising phenomenon does not appear yet.
Claims (5)
1. big-and-middle-sized natural water body algae pollution emergency repair process that can resist slight stormy waves is characterized in that step is:
The first step is used potassium permanganate KMnO in water body
4, consumption requires to satisfy that water body presents baby pink and continuity is not moved back, and the organism in the oxidation water body carries out pre-treatment to the water body reparation;
Second step added staple fibre and flocculation agent in pretreated water body, produce the fiber reinforcement flocs unit;
The 3rd step added in water body and helps the wadding agent, and the fiber reinforcement flocs unit is maximized and crosslinked raising intensity; And in water body, adding hydrogen peroxide, decomposition generation gas makes on the fiber reinforcement flocs unit and floats to the water surface;
The 4th step, catch the flocs unit on the water surface, promptly finish emergent the reparation.
2. a kind of according to claim 1 big-and-middle-sized natural water body algae pollution emergency repair process that resists slight stormy waves is characterized in that: the concrete reparation was when described water body was pool, relative immobilized lake: press 0.001%～0.05% of water body weight in advance and add KMnO
4Oxidation of organic compounds makes water body present baby pink and continuity is not moved back; After 30～720 minutes, in pretreated water body, press 0.01～1% of water body weight and add staple fibre, press 0.01～0.1% of water body weight then and add flocculation agent, produce the fiber reinforcement flocs unit by pipeline; Water intaking body weight 0.001～0.2% help wadding agent water in advance blending dispersion, add in the water body then, disperse with pump, maybe will help wadding agent levigate broadcasting sowing to be dissolved in water fast in water, this moment, fiber reinforcement flocs unit more in small, broken bits crosslinkedly was combined into large-scale fiber reinforcement flocs unit; Add concentration expressed in percentage by weight again and be 0.5%～10% aqueous hydrogen peroxide solution, amount to H
2O
20.005～0.05% of consumption water intaking body weight stirs entry with pump; The oxygen bubble that fiber reinforcement flocs unit absorption this moment hydrogen peroxide catalytic decomposition is come out floats to the water surface in 1～120 minute; Fish for the come-up flocs unit, finish emergent the reparation.
3. a kind of according to claim 1 big-and-middle-sized natural water body algae pollution emergency repair process that resists slight stormy waves, it is characterized in that: described water body is that river small stream etc. is fast during flowing water, do not follow order, directly in water body, press 0.001%～0.05% of water body weight by different pipelines and add KMnO
4, press 0.01～1% of water body weight and add staple fibre, to press 0.01～0.1% of water body weight and add flocculation agent, the adding concentration expressed in percentage by weight is 0.5%～10% aqueous hydrogen peroxide solution, amounts to H
2O
20.005～0.05% of consumption water intaking body weight adds by 0.001～0.2% of water body weight and to help the wadding agent; Requiring said medicine is to add continuously or add simultaneously with different pipelines by above-mentioned order substantially; Treat to fish for after the flocs unit come-up, finish emergent the reparation.
4. a kind of according to claim 1 big-and-middle-sized natural water body algae pollution emergency repair process that resists slight stormy waves, it is characterized in that: the length of described staple fibre is 0.1～10cm.
5. a kind of according to claim 1 big-and-middle-sized natural water body algae pollution emergency repair process that resists slight stormy waves, it is characterized in that: described flocculation agent is aluminium salt, magnesium salts or molysite.
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| CN102295363A (en) * | 2011-06-13 | 2011-12-28 | 哈尔滨工业大学 | Water treatment method for permanganate pre-oxidation and air floatation combined alga removal |
| CN104211226A (en) * | 2014-09-16 | 2014-12-17 | 上海交通大学 | Method for removing alga in water body by using nano iron material |
| CN104211226B (en) * | 2014-09-16 | 2016-02-10 | 上海交通大学 | A kind of method utilizing nano-iron material to remove Measures of Algae in Water Body |
| CN105776660A (en) * | 2016-04-11 | 2016-07-20 | 杭州普而环境科技有限公司 | Method for reinforcing water alga removal |
| CN105753126A (en) * | 2016-05-18 | 2016-07-13 | 路林茫 | Surface water body total-condensation in-situ purification method |
| CN106396170A (en) * | 2016-10-19 | 2017-02-15 | 浙江省农业科学院 | Aeration-free waste water air floatation complexing agent and its preparation method, use method and use device |
| CN106395935A (en) * | 2016-11-18 | 2017-02-15 | 泉州师范学院 | Microcystis bloom treatment process depending on aluminous cement-short fiber system based algae sinking and bottom mud passivation |
| CN106395935B (en) * | 2016-11-18 | 2019-05-07 | 泉州师范学院 | A kind of microcystis waterbloom Processing tecchnics by algae and bed mud passivation heavy in high alumina cement-staple fiber system-based |
| CN109845703A (en) * | 2019-01-14 | 2019-06-07 | 海南海壹水产种苗有限公司 | A kind of separation method of artemia nauplii |
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