CN101786712B - Anti-wave emergency restoration process for polluted natural water body - Google Patents
Anti-wave emergency restoration process for polluted natural water body Download PDFInfo
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Abstract
The invention discloses an anti-wave emergency restoration process for a polluted natural water body. In a system for processing the water body by a flocculation method, short fibers accounting for 0.005 to 1 percent of the weight of the water body and a flocculating auxiliary agent accounting for 0.001 to 0.2 percent of the weight of the water body are added and the flocculating auxiliary agent can be cross-linked with a flocculating agent. The process comprises the following steps: firstly, adding the short fibers into the water body in advance or before the addition of the flocculating auxiliary agent and adding the flocculating auxiliary agent after the addition of the flocculating agent; secondly, generating microbubbles in the water body by using materials spontaneously generating gas to make compound flocs catch the microbubbles and achieve a compression compact effect during rising; and finally, catching the flocs and finishing the emergency restoration. The emergency restoration process can be suitable for performing restoration in the various natural water bodies with slight wind waves and complex hydrological conditions and fulfills the aim that the flocs cannot be easily destroyed by the wind waves within certain time, thereby effectively removing pollutants from the water body and solving the problem of effectively removing the pollutants from the water body in a low cost in the presence of wind waves.
Description
Technical field
But the present invention relates to a kind of polluted natural water body emergency repair process of wind and wave resistance.
Technical background
It is the important environmental issue that present countries in the world all face that natural water body pollutes, and is characterized in that pollutent is distributed in water, suspended substance and the bed mud unevenly.Polluting the final purpose of repairing is that pollutent is shifted out water body, recovers the water body standard state.Handling different key point with industrial sewage is: natural water body is handled and is wanted and can in slight stormy waves, carry out, and can not possess simultaneously with industrial sewage and handle the same perfect equipment.
Main in the world reparation type has at present:
One, bioremediation technology; Main high waterplant of use and mikrobe; Through artificial article floating island (seventies in 20th century is by German Besterman company initiative); The artificial swamp plantation, microorganism colonization (transplanting) from traditional Treatment of Industrial Water technology, methods such as biotechnological formulation input such as enzyme and phycovirus are carried out the water body in-situ reparation.
These class methods can be lentamente decomposed pollution substance in water, suspended substance, the bed mud or are transferred in the plant materials, thereby reach the reparation purpose, but polluted-water is emergent to be repaired because of processing speed can not be applied to slowly.Characteristics are that processing cost is very low, but as set up after the balance ecosystem then living things system and can in for a long time, repair water body, therefore become the topmost restorative procedure of present low-pollution water body.Shortcoming is that flexibility is relatively poor; Changing frequent area, river mouth such as deep water, high muddy water body, marine site, salinity; Temperature is crossed low when too high, and stormy waves is big, pollutes under the situations such as waters of especially severe; Because of particular organisms is difficult to existence or is difficult to form effective group, cause this type technology to be difficult to carry out reparation.
Two, physics recovery technique, pollutent is shifted in the measures such as artificial aeration, section dirty filter dirt, water transfer dirt removal, the training of channel that mainly contain, and rehabilitation cost is high, and processing speed is slow, can not use as technique for rapidly repairing usually, and is prone to cause leakage or secondary pollution.
Three, chemical recovery technique mainly through the method for chemical flocculation and absorption, is handled the pollutent in the natural water body, on processing severe contamination water body, incomparable advantage is arranged.
Its biggest advantage is that processing speed is fast, and the reparation of therefore can when pollution is incipient, meeting an urgent need is to reduce basin internal contamination loss.Shortcoming is to cause ecosystem unbalance easily, and pollutent sinks to bed mud easily and causes secondary pollution.The main research work of academia is at present concentrated and is to seek the method that ecosystem is not had toxic medicine and non-secondary pollution.For polluting comparatively serious water body, generally at present adopt reparations of meet an urgent need earlier of chemical repairing method, etc. pollution level drop to a certain degree after combination physics reparation and the biological prosthetic method of carrying out subsequent disposal solve.
Because present chemical repairing method still is difficult for accomplishing pollutent is shifted out fast the requirement of water body, thereby the enforcement and the development of the emergent recovery technique of water body have seriously been limited.
(1) method that adopts conventional dispensing absorption or flocculate; Though can catch the pollution substance in the water body rapidly; But sorbent material and flocs unit are all loose frangible, generally can sink under water or become the water body suspended substance, even add SEPIGEL 305 (PAM); Chitosan (chitosan) etc. helps the flocs unit intensity increase of the crosslinked back of wadding agent also limited, is difficult to direct net and catches removal.These contain bed mud and the suspended substance of pollutent such as the source of pollution that untimely processing then can become slow release; Really do not reach water body and repair purpose (the chitin modified clay flocculating algae sinking of use during for example Taihu Lake in 2008 is administered; Discovery makes loose come-up behind throw out resuspension and the algae desorption because of the reason of medium tenacity stormy waves; The minority waters bed mud corruption occurs for a long time and causes the algae toxin simultaneously, and nutrition discharges again); As directly closely hang net to sorbent material pack and catch or build up the dam and catch that (for example chemical plant, Jilin in November, 2005 explosion time adopts activated carbon treatment benzene to pollute river; In June, 2008 Yunnan Province Wenshan Prefecture Funing County weighing apparatus elder brother motorway crude phenols incident of leakage, Sang He adopts lime dam, 10 road and gac dam, 2 road to carry out adsorption treatment; ), though then can avoid suspended substance to pollute, because of not being that the original position reparation can't stop riverbed bed mud absorb polluted matter matter.
(2) invention disclosed patented claim on August 6,2008 " 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 verivate and/or shrimp shell verivate 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 catch effect; When this algae flocculating material consumption was 0.1～10mg/L, the algae clearance reached more than 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 by fiber with help the wadding agent to form, help the wadding agent net of can only building bridge in theory to catch suspended substance, 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.And water body is handled in the experiment and also found: 1. a large amount of deep water places algae group can't 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, algae is not removed by the young; 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 and must carry out breakthrough improvement promptly to this: 1. introduce and possess charge neutrality ability and the novel material of catching dissolubility pollutant in the water or nutrition ability and to 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 basically 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.
(3) catch because of net and be difficult to thoroughly fish for flocs unit in the water; Present existing air-dissolving air-float/electric floating two class methods of using of industry are impelled to float to the water surface on flocs unit and the suspended substance and catch that (for example Ministry of Water Resources's 948 project demonstration projects---south, Beijing in 2003 moat spillway adopts algae in the flocculation/air floating method removing water to avoid secondary pollution; Environmental Science and Engineering institute of Tongji University in 2008 handles in the campuses practical examples such as view pond algae), this method advantage has been that off-the-shelf equipment transplants, use is very easy in the air supporting of small area shallow water body.The also method of useful magnetic flocculation is utilized magnetic field that flocs unit is caught from water and is avoided secondary pollution (for example Hefei material science research institute of the Chinese Academy of Sciences in 2009 adopts the method that high-intensity magnetic field is caught after the magnetic kind input to handle the Taihu Lake algae).But remain in defective at present be: 1. electric floating the needs can be conducted electricity by the reparation water body, is not suitable for freshwater and uses; 2. the magnetic separation technique requirement is a shallow water by repairing water body, otherwise equipment is difficult to install and provide magnetic field; 3. all these methods that comprise air-dissolving air-float all exist the fragile disadvantage of a. flocs unit to solve; Therefore in the natural Jiang Hai lake of medium stormy waves and complicated hydrologic condition is arranged flocs unit very easy by stormy waves or turbulent flow smash blow heavy, can't efficiently catch or on float to the water surface and cause repairing failure.B. big slightly dark slightly water body promptly need be set up air floating platform and collect the come-up throw out; Otherwise the airfloat equipment that needs enormous amount; Invest too highly, and the shortcoming that still exists behind the usage platform is to handle clean Polluted area and can flows contaminated once more because of the untreated areas polluted water.Administer in many tests in the Taihu Lake algae, utilize the Poly aluminum Chloride (PAC) PAC/PDM flocculation algae dephosphorization of holding concurrently, the algae flocculation method of come-up that produces oxygen voluntarily in the sun, but find that under the stormy waves of Taihu Lake flocs unit is dispelled the example of sinking in a large number.In seminar's research, find equally; Adopt ecological algae flocculating material (application number 200810020707), or only with conventional Poly aluminum Chloride (PAC) flocculation and auxiliary during with aeration air supporting, aeration time one long come-up flocs unit is promptly broken gradually or dissipate.
Summary of the invention
But the object of the present invention is to provide a kind of polluted natural water body emergency repair process of wind and wave resistance, flocs unit can not keeping in several hours not broken in slight stormy waves, is convenient to fish for reparation.
In order to reach above-mentioned purpose, solution of the present invention is:
Handle in the system of water body at the conventional flocculence of usefulness, that replenishes the staple fibre that adds water body weight 0.005～1% and 0.001～0.2% helps the wadding agent, help wadding agent requirement must with the contained metal ion crosslinked of flocculation agent.Staple fibre adds in advance in water body or before helping the wadding agent to add, adds; Help the wadding agent after adding flocculation agent, to add again; The result who adds is flocs unit and the staple fibre and the loose composite flocculation body that helps the certain intensity of the common composition of wadding agent that makes generation; Then in water body the material through dropping into or broadcast sowing spontaneous generation gas (as adding MAGNESIUM METAL 99 and matrix material thereof, hydroborate etc. produce the hydrogen material, and hydrogen peroxide/decomposition catalyst etc. produce oxygen species; Aquation aerogenesis materials such as calcium carbide, acid or hydrolysis are the product CO such as embedding sheet that tart salt/carbonate matrix material is a major pharmaceutical
2Material is dissolved with the water of high pressure gas etc.) produce microbubble, make the composite flocculation body catch microbubble, and the compressive action that in uphill process, relies on bubble buoyancy and the bridge formation that helps the wadding agent and crosslinked reach fine and close effect; At last, fish for flocs unit, accomplish emergent the reparation.Flocs unit after come-up additional sprinkling aluminium salt or molysite are crosslinked in case of necessity, with further raising flocs unit intensity.
The length of said staple fibre is 0.1～10cm; Common employing hydrophilic inorganic and mineral fibre when handling the wetting ability pollutent (like aluminum silicate fiber, fibrous magnesium silicate, sapphire whisker; Spun glass etc.) effect is better, also can use natural plant fibre and organic fibre; When handling non-wetting ability pollutent, adopt amphiphatic organic fibre of profit and natural plant fibre effect better usually; Also can use inorganic and mineral fibre; Effect was best when wherein bombax cotton (pure oleophylic fiber) was used in the handling oil leakage pollution with other blending in of fibers; The dirt that oils of the existing bombax cotton absorption water surface also has other kind fiber reinforcements flocculations to catch oil droplet in water.
Saidly help the wadding agent to adopt SEPIGEL 305 and Polymer Synthesizings such as verivate or grafts thereof to help the wadding agent; Also can use natural biologicals such as chitosan, activated silica gel, gelatine to help the wadding agent; Also can adopt microbial flocculant, technical requirements is to have than the viaduct ability, and can be crosslinked with flocculation agent.
After adopting such scheme, the present invention helps the wadding agent through adding staple fibre and routine on conventional chemical flocculation process basis; Be aided with can big area broadcast sowing get angry from the air supporting material; Make flocs unit be converted into the fiber reinforcement flocs unit, simultaneously bubble be wrapped in the flocs unit, with floating to the water surface on the flocs unit so that catch; The compressive action that flocs unit relies on bubble buoyancy and the bridge formation that helps the wadding agent or crosslinked reaches fine and close effect, can pollutent be converged to the water surface like this and drag for away.
If adopt fiber reinforcement flocs unit technology, but substitute from air-float method with conventional air-float method general in the present industry, then needing to be isolated into the zonule to water body in advance can use; Otherwise the water body of having cleared up is polluted by the mobile polluted water rapidly; Causing in big area natural water body or general current water must repetitive decontamination, and cost is very high, and from the air supporting material because of can in water body, big area broadcasting sowing; The full waters air supporting and the certain hour of can getting angry; Therefore generally do not need to isolate in advance water body, also do not need a large amount of aerators and pipeline or processing platform, it is quite cheap to purify cost.
Among the present invention floccule body show at microscopically inner for short fiber interlocks, contains the structure of bubble, floccule body can be in slight stormy waves maintenance a few hours do not sink not broken.As on flocs unit, spraying aluminium salt molysite further enhanced flocculation body extension steady time.
The present invention uses fiber reinforcement flocs unit/from the air-float method advantage to be to be useful in the complicated various natural waters of slight stormy waves, hydrologic condition and repairs; Meaning of the present invention is through invention fiber reinforcement flocs unit/from this gordian technique of air supporting; Reach and be difficult in the flocs unit certain hour by stormy waves destructive purpose; Thereby can pollutent effectively be migrated out the water surface, solve a threshold of the emergent recovery technique development of present puzzlement water body---having under the stormy waves situation how to shift out the water surface to the water pollutant high efficiency, low cost.The corresponding birth the invention of the medium-and-large-sized water pollution of a series of emergent reparations on this core technology basis; Repair as the algae eutrophic water body is emergent; Greasy dirt or suspension polluted-water or beach are emergent to be repaired; The COD polluted-water is emergent to be repaired; Heavy metal-polluted water and bed mud, the emergent reparation of beach.
Embodiment
The technique for rapidly repairing of embodiment 1 landscape water body algae and phosphorus (is got angry with ydrogen peroxide 50, or is used KMnO
4/ H
2O
2Bicomponent system is handled algae water, does not retrieve at present)
In containing the landscape water body of algae, pass through the chrysotile asbestos fibre that pipeline adds water body weight 0.01～1%; Add commercial Poly aluminum Chloride (PAC) (flocculation agent again; The product that contains a large amount of poly-ferric chloride impurity) aqueous solution; Consumption water intaking body weight 0.01～0.1% with the aqueous hydrogen peroxide solution of another pipeline adding 0.5%～10% concentration, is amounted to H then
2O
2With measuring 0.005～0.05%.The effect of Poly aluminum Chloride (PAC) is to make that dissolved phosphorus is converted into the phosphagel phosphaljel suspended substance in the water body, eliminates main nutrient matter phosphorus in the water, algae simultaneously, and spore and other suspended substances are by preliminary flocculation together.The effect of hydrogen peroxide is to kill algae and spore thereof through allelopathy, reduces water body COD, to the emergent oxygenation of water body, meets simultaneously that catalytically decomposed is that oxygen causes flocs unit air supporting behind the impurity iron ion in the flocs unit.
After above-mentioned medicament adds; The cationic PAM of adding 0.001～0.2% (helping the wadding agent) is in the water body that will administer; With submersible pump stirring carrying out fiber flocs unit enhancing/air supporting; This moment is crosslinked because of cationic PAM and alite hydrolyzate, flocs unit volume and intensity increase, and on after 120 minutes, float to the water surface usually.Come-up back flocs unit progressively compresses, apparent tight thickness, under general stormy waves situation and under the shearing that the string bag is fished for several hours can be broken.The remaining micro-algae of water body obviously descends in microscopically observation activity and procreation speed, and its activity and procreation speed increase decline rapidly and even death with the dioxygen water yield that adds.The ydrogen peroxide 50 consumption generally must not be greater than 0.1%, otherwise the fish rollover rear section phenomena of mortality earlier often occur.
When the water body dissolved organic matter, when the more or water body of algae is smelly, then should add KMnO earlier
4Eliminate organism in advance, consumption water intaking body weight 0.005%～0.05%, add-on require to satisfy that water body presents baby pink and continuity is not moved back.Generally after 30 minutes, continue the program that present embodiment is write again.Additional KMnO is arranged
4The time, owing to generate manganese dioxide-catalyst, decomposing hydrogen dioxide solution speeds up, air supporting speed obviously increases.Usually all have in force and use KMnO earlier
4Carry out preoxidation.
Flocculation agent can be used Tai-Ace S 150, Poly aluminum Chloride (PAC), double-acid ferro-aluminum, sal epsom/lime, one of magnesium chloride/lime etc. or multiple mixture, consumption water intaking body weight 0.01%～0.2%.
At the about 1 mu natural pond 2～moderate breeze of area, high about 0.1 meter of wave is under the about 25 degree situations of water temperature in summer; Big test result shows: at the chrysotile asbestos fibre consumption is 0.05% of water body weight; The cationic PAM consumption is 0.01% of a water body weight, and the PAC consumption is 0.05% of a water body weight, KMnO
4Be 0.005% of water body weight, H
2O
2For 0.01% o'clock of water body weight, can effectively be fished for greater than 95% come-up flocs unit, to handle back water body clarity and rise to 2m from 0.1m, naked eyes can be seen at the bottom of the pond basically.Basically occur sinking and broken phenomenon in the come-up flocs unit 6 hours, as the flocs unit that floats is sprayed 1% molysite then water surface RT rise to more than 12 hours, have the enough time to fish for.In contrast to test site water body without fiber reinforcement/air flotation technology; Even flocs unit come-up less than 30% under burning sun, the flocs unit of come-up are quite fragile, at stormy waves or fish for fragmentation immediately off the net and sink again; The water body clarity rises to 0.5m from 0.1cm, and 1m place water sampling is found a large amount of throw outs.
The emergency repair process of embodiment 2 Organic pollutants water bodys
In the benzene polluted-water, the aqeous suspension that drops into coke powder in advance adsorbs, and input amount is generally 50～1000 times of benzene content, and the adsorption treatment time was generally more than 1 hour.Drop into 0.02～0.1% conventional aluminium salt then as flocculation agent.Produce great quantity of small black throw out this moment in the water body, phenyl originally is trapped in the black throw out, and water body black is muddy.
Aluminium silicate fiber peacekeeping 0.001～0.2%PAM water in advance of water intaking body weight 0.01～1% is mixed; Add then in the water body that will administer, high pressure dissolved air water (on the gram air dissolving system of pula, make in advance and be stored in the dissolving) is discharged to and carries out fiber reinforcement flocs unit/air supporting in the water body.This moment, the water body of black became limpid, formed large-scale flocs unit floating upward quickly to the water surface, the tight thickness of come-up flocs unit, general stormy waves situation and under the shearing that the string bag is fished for several hours can fragmentation.Then intensity is higher like the aluminium salt to its volume 1% of come-up flocs unit sprinkling, and sustainable 24 hours are not broken.
Substitute the high pressure dissolved air water as from the air supporting medicament with Mg/Fe matrix material (magnesium powder and iron powder mill 1 hour in stirring mill, meet and get along well produce a large amount of tiny hydrogen gas bubbles rapidly with water), treatment effect is similar, and advantage is broadcasted sowing use at water body entirely.
At 1m
3The pilot scale of volume adopts the eddy oscillating device to be put in the wave that shakes in the water with plastics bag, and with hair dryer adjoined water surface simulation wind-force, it is 10g/l that the aqeous suspension of coke is amounted to the coke consumption, Poly aluminum Chloride (PAC) consumption 0.05%.High at 0.02～0.05 meter wave; Under the about 4 grades situation of wind-force, when using staple fibre 0.2%, PAM consumption 0.01%; The total consumption 250g of Mg/Fe matrix material; Greater than 97% throw out come-up, the come-up throw out can be fished for by 100 eye mesh screens greater than 99%, and dissolving benzene content drops to from untreated 138mg/l and is lower than 25mg/l in the water.Water body is limpid, and sinking does not appear in 9 hours in flocs unit basically, fragmentation, as the come-up flocs unit is sprayed 1% Tai-Ace S 150 then the water surface shelf time be increased to about 24 hours, have enough and fish for the time.Fiber reinforcement flocs unit/from air-float technology and directly with the air supporting of Poly aluminum Chloride (PAC) flocculation/high pressure dissolved air water is not used in contrast; It is still muddy then to handle the back water body; Throw out can't float basically when stormy waves was arranged, 15% of the quantity not sufficient flocs unit total amount of 100 eye mesh screens seizure flocs unit.Directly with fiber+chitosan/high pressure dissolved air water air supporting, it is slightly muddy to handle back water quality, and flocs unit is about 3 hours of RT on the water.Only build bridge and catch then 100 order nets and fish for, handle in the water of back dissolving benzene content up to 67mg/l with fiber+chitosan.
The paint polluted-water, phenol water polluted-water 5L lab scale test-results and above-mentioned experiment are similar, confirm that all the present invention is feasible.Sorbent material can be selected activity charcoal powder, coke or semi-coke powder, wood powder, straw fiber etc., and general consumption is 50～1000 times of pollutent consumption.
(present technology is not reported Mg/Fe to 3 one kinds of emergency repair process from the air supporting heavy metal-polluted water of embodiment yet
3O
4Matrix material is synthetic, and is used in the example in the water body reparation)
Be configured to simulate heavy metal-polluted water 1000L with copper sulfate 20g with muddy band mud river, place 72 hours subsequent use.Record the about 2mg/l of free copper content in the water after the filtration.The about 61mg/l of copper content in the suspended substance, bed mud copper contains 135mg/l.
In water body, add Hydrocerol A and make it the about 100mg/l of concentration, make the cupric ion that is adsorbed on water body suspended impurity and the bed mud be converted into the citric acid complex cupric ion and get in the water.The rock wool fibers of water intaking body weight 0.05～0.1% drops in the water and mixes; Amount according to 5 times of copper mole numbers drops into Na3T-15 (a kind of heavy metal chelating agent then; Korea S open country KCC produces) make complex copper ion be converted into small suspended substance, the bodied ferric sulfate that drops into water body weight 0.05% after 10 minutes flocculates.
The water intaking body weight 0.01% PAM in advance with water-dispersion, add in the entry then.
Stir mill with iron ore and the mixing of magnesium powder, make Mg/Fe
3O
4Matrix material also drops into it in water.This moment, matrix material produced a large amount of hydrogen microbubbles with the water reaction in water, produced Mg (OH) simultaneously
2Stablize water pH value.This air supporting medicament and the acting in conjunction of fiber reinforcement medicament are with floating to the water surface on the flocs unit.Handle the residual copper of back water body and be lower than 0.5mg/l, suspended substance disappears, and bed mud copper content reduces significantly.
At 1m
3The pilot scale of volume adopts the eddy oscillating device to be put in the wave that shakes in the water with plastics bag, and with hair dryer adjoined water surface simulation wind-force; The water body that use fiber reinforcement/air-float technology is arranged; Discovery is greater than 95% flocs unit come-up and do not dispelled heavyly in 8 hours basically by stormy waves, and available mesh screen is fished for, and does not use the water body of fiber reinforcement/air-float technology; Mesh screen is caught 10% of flocs unit quantity not sufficient total amount, Mg/Fe
3O
4Matrix material can be fished for recovery with magnet.
Claims (5)
1. but the polluted natural water body emergency repair process of a wind and wave resistance; It is characterized in that: in a system with flocculence processing water body; Replenish to add water body weight 0.005～1% staple fibre and 0.001～0.2% help the wadding agent; Seeking help the wadding agent must can be crosslinked with flocculation agent, and staple fibre adds in advance in water body or before helping the wadding agent to add, adds, and helps wadding agent adding again after adding flocculation agent; Material through spontaneous generation gas produces microbubble in water body then, makes the composite flocculation body catch the microbubble come-up; At last, fish for flocs unit, accomplish emergent the reparation.
2. but a kind of polluted natural water body emergency repair process of wind and wave resistance according to claim 1 is characterized in that: the flocs unit after come-up spray aluminium salt or molysite crosslinked, with further raising flocs unit intensity.
3. but a kind of polluted natural water body emergency repair process of wind and wave resistance according to claim 1, it is characterized in that: the length of said staple fibre is 0.1～10cm.
4. but a kind of polluted natural water body emergency repair process of wind and wave resistance according to claim 1 is characterized in that: adopt hydrophilic inorganic and mineral fibre when handling the wetting ability pollutent; Adopt amphiphilic organic fibre of profit or natural plant fibre when handling non-wetting ability pollutent.
5. but a kind of polluted natural water body emergency repair process of wind and wave resistance according to claim 1 is characterized in that: help the wadding agent to adopt SEPIGEL 305 and verivate or grafts, or chitosan, activated silica gel, gelatine, or microbial flocculant.
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| CN106745581B (en) * | 2016-11-18 | 2020-07-31 | 泉州师范学院 | Rapid river channel purification ecological cycle process |
| CN108128870B (en) * | 2018-01-30 | 2021-10-22 | 云南大学 | Method for removing arsenic in drinking water |
| CN112194230A (en) * | 2020-09-27 | 2021-01-08 | 水之清环保科技(上海)有限公司 | Composite flocculant for wastewater treatment |
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