CN201553641U - Magnetic trap removing device for algae in eutrophic water body - Google Patents

Abstract

The utility model relates to a magnetic trap removing device for algae in eutrophic water body, which aims to remove algae, nitrogen and phosphorus by adding magnetic flocculant into algae water so as to be mixed and flocculated with the algae water into micro-structure network shaped floc, and removing the floc from the water body through algae/water separation. The utility model comprises an automatic adding system, a magnetic trapping system and an algae/water separating system which are all arranged on a mobile platform, and the utility model can drive freely in a lake by adopting the mobile platform as a carrier and supplying a power supplier. The utility model can absorb and trap the harmful substances in the water, concentrate algal cell rapidly under the action of external field, remove more than 90% of the total phosphorus with serious influence in eutrophication, and remove more than 95% of the algae and suspended substances.

Description

Algae substances magnetic is caught moving-out device in the eutrophication water

Technical field

The utility model belongs to suspended solid material moving-out device such as algae when blue-green algae breaks out in a kind of eutrophication water.

Background technology

In recent years, under the background that economy maintains sustained and rapid growth, deep variation has also taken place in ecological environment problem.Lake eutrophication becomes increasingly conspicuous, breakout of water bloom, and fishes and shrimps disappear substantially, and the color of water body, smell all have deterioration in various degree, and the sewage body is received in part lake even become.

Large-area algal bloom, havoc the balance and stability of aquatic ecosystem, not only influenced water landscape, influenced the development of culture fishery, and algae toxicity has constituted the threat to environment for human survival.Only red tide reaches more than billions of units for the coastal financial loss that causes every year, so breaking out of algae becomes a kind of disaster.Cause that main nutrient elements that algal tufa breaks out is that nitrogen, phosphorus, particularly phosphorus in the water body plays critical effect.Remove the algal bloom method than popular at present and roughly can be summed up as physics method, chemical method and biological process.

Physics method physical method mainly contains artificial or machinery is salvaged, crossed filtering algae, ultrasonic technique and removes algae, shading technology and aeration and wash away etc.Method that has such as ultrasonic technique and shading technology etc. can not shift out nitrogen phosphorus algae wherein, though can guarantee temporarily that body eutrophication does not break out, can not tackle the problem at its root; And manually salvage or machinery is salvaged and expended a large amount of manpower and materials, have little effect.

Chemical method mainly is to adopt various chemical algae removing agent, its most pronounced effects, but also have most danger, thus very prudent when using, in strict accordance with the consumption operation that requires, otherwise can cause serious consequence.Because the chemical ingredients of these algicide mostly is the copper compound of processable greatly, perhaps chelated copper class material, these compounds produce injury to a certain degree even cause death the Shui nationality such as fish pasture and water are biological, and carcinogenesis is arranged, also can produce other some uncertain bad sequela.Also just like coagulation method and electrochemical method etc.Coagulation method directly sprays coagulating agent in the lake body, and effect does not still have algae to shift out the lake body after all though have preferably, therefore can not well deal with problems.Electrochemical method is difficult to adapt to large-area water body in lake eutrophication control.

The mechanism one of the biological algae removal technology of biological process is to utilize the growth-inhibiting substance of the natural enemy of algae and generation thereof to suppress and kill algae.The 2nd, utilize plant class or fish to handle algae.Some method wants to utilize principle such as the eubiosis that algae grows and breeding are suppressed, but implements bigger difficulty from technological layer.Some method often needs to drop in advance huge artificial engineering, to create and control suppresses the condition of required waterplant of algal tufa (bottom low in transparency as submerged plant or that lack suitable bed mud is difficult to existence) or animal survival, thereby take effect slow, cost is high, the difficult improvement that generally is applicable to big area, sudden algal tufa.

Summary of the invention

At above-mentioned problems of the prior art, the purpose of this utility model is to provide in the eutrophication water algae substances magnetic to catch moving-out device, and it can adsorb net fast catches objectionable impurities in the water, improves water transparency, keeps water conditioning, acid base equilibrium.

The utility model is the technical scheme that its purpose of realization is taked: algae substances magnetic is caught moving-out device in the eutrophication water, is used for removing large-area waters and has algae substances when the water body in lake algal tufa breaks out.The mobile platform of this device dependence particular design is as carrier and power is provided, and can freely travel in the lake.Device is placed on the mobile platform, and device mainly contains three parts, is respectively: automatic dosing system, magnetic is caught system and algae/water separating system.Described automatic dosing system comprises volume pump, dissolving tank and magnetic flocculant supply cabin; The described magnetic system of catching comprises stirring rake, conduit and dividing plate; Described conduit is arranged on the mobile platform mid-way, can establish 6-10 conduit, and each is wide to be about 3-5m, dark 0.5-1.0m, described stirring rake is arranged on the conduit front portion, and described conduit rear portion is a flocculation zone, long is 6-10m, and its bottom is for gradient shape and be provided with dividing plate and baffle plate.Described algae/water separating system comprises permanent magnetism disk body separator, scraper plate and auger.This device can be assisted and be established after-treatment system, comprises magnetic separate chamber, magnetic recovery capsule, flco filter-press dehydration device and mud cake storing chamber.

This device travels on lake with mobile platform, the corresponding access to plant of algae water, after tested, automatically dosing system will quantitatively add the water body of the magnetic flocculant of development voluntarily to access to plant, catch in the system material such as algae through magnetic and flocculate into big throw out at short notice, and this throw out has magnetic.Pass through algae/water separating system at last, the magnetic throw out is shifted out the water surface by after the catching of magnetic separator, thereby reaches the purpose that particulate matters such as algae in the nutrition-enriched water of lake are removed on noresidue ground.

Principle of work of the present utility model: dosing system is added to magnetic flocculant in the algae water automatically, utilize magnetic to catch the flco that system becomes magnetic flocculant and algae water mixed flocculation micro-nano network form, by algae/water separating system flco is shifted out water body again, reach purpose except that algae, nitrogen and phosphorus.

The beneficial effects of the utility model are: can adsorb net fast and catch objectionable impurities in the water, improve water transparency, keep water conditioning, acid base equilibrium.Fast enriching frustule under the outside magnetic field effect has solved and has removed algae salvaging problem afterwards, has stopped may taking place of secondary pollution.And magnetic flocculant can recycling, and use cost significantly reduces.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is further described.

Fig. 1 is the mobile platform floor map;

Fig. 2 is the mobile platform diagrammatic cross-section.

Embodiment

As shown in Figure 1, whole mobile platform 13 can freely travel at lake by rearmounted motivating force 12, and eight conduits, each roomy being about about 4m, dark nearly 0.7m are arranged in the middle of the mobile platform.Mobile platform to overtake, according to relative motion principle, water body can enter into intermediate channel with a relative platform speed.On conduit, three basic systems are set: automatic dosing system, magnetic is caught system and algae/water separating system.Automatically dosing system mainly is made up of volume pump 1, dissolving tank 3 solid magnetic flocculation agents supply cabin 5.In dissolving tank, dispose 10%～20% magnetic flocculant solution, quantitatively add magnetic flocculant to the water body that enters conduit by volume pump.Magnetic is caught system and mainly is made up of stirring rake 2, conduit 4 and dividing plate 16.The magnetic flocculant that dosing system adds is caught system through magnetic, by mixed flocculation algae isocolloid material was condensed into big bulk flco in two minutes, and this flco has magnetic.Algae/water separating system mainly is made up of disk body separator 6, scraper plate 14, auger 15.The bulk flco that has magnetic is through algae/water separating system, and the magnetic flco is scraped in the screw feeder by scraper plate by 6 absorption of permanent magnetism disk body separator, and clean water flows out disk.Behind conduit, can establish after-treatment system, mainly form by magnetic separate chamber 10, magnetic recovery capsule 11, flco filter-press dehydration device 7 and mud cake storing chamber 8.The flco of scraping in the screw feeder enters the magnetic recovery capsule, and is centrifugal by high strength, and the most of magnetic in the flco is separated in the recovery capsule, and the residue flco is pumped to the filter-press dehydration device, and through filter-press dehydration, it is temporary that the mud cake that obtains is put into the mud cake storing chamber.

Magnetic flocculant joins eight conduit stirring rake positions in the conduit by water quality condition, as shown in Figure 1.The laying in eight septulum roads is in full accord, because the magnetic flocculant that adds has magnetic, have coagulation efficiently, can net catch the suspended matters such as blue algae in the water, therefore be called as magnetic and catch system, the magnetic system of catching is divided into and mixes district and special dividing plate flocculation zone.Flocculation agent is added to the stirring rake position and also promptly mixes the district, is made up of eight stirring rakes, and the effect of stirring rake is to allow flocculation agent and the algae water thorough mixing that enters conduit, and the whole district that mixes is controlled automatically by centralized monitoring system 9.As shown in Figure 2, special dividing plate flocculation zone is about about 8m, and certain gradient 17 is arranged at the bottom, form by seven dividing plates 16 and polylith baffle plate, the effect of special dividing plate flocculation zone is to allow magnetic flocculant bring into play the effect that magnetic is caught, and assembles net and catches suspended substances such as blue-green algae, making flocculation produce thing and having magnetic.

Algae/water separating system is to allow in the water body to catch the throw out that the flocculation back produces through magnetic and be moved out of water body.Because of the throw out that forms has magnetic, so the disk that uses the rubidium Fe-Mn magnetism material to make reclaims algae throw out (also can use electro-magnet).As Fig. 2, there is a baffle plate 18 permanent magnetism disk body separator 6 back, and this baffle plate is in order to stop that the little flco of part by disk is provided with, when being less than or equal to metal line 19 during the disk operation, and the processing efficiency maximum of disk.Exactly because the existence of algae/water separating system, the precipitation that reassociates that does not need to wait for throw out is collected, and the throw out of suspended state can direct separated system be separated, and can significantly save the treatment time, improves processing efficiency.

The utility model has following characteristics through practice:

1) treatment effect is good, and the serious total phosphorus clearance of impact in the body eutrophication is reached more than 90%, and algae and removal efficiency are reached more than 95%.

2) processing time weak point, efficient height, about 2～3min of whole flow processing time. Day output reaches 1 ten thousand stere.

3) cleanliness without any pollution is a kind of physicochemical method, extremely is fit to the body eutrophication Emergency management. The water outlet indices that detects is fully up to standard.

4) processing cost is lower, and the main component of magnetic flocculant is flyash and magnetic. Flyash is cheap, and magnetic can reclaim use.

5) water body in lake is carried out online the detection, the strict guarantee flocculant dosage is in optimal value. No flocculant residual enters the lake.

6) the mobile platform freedom is travelled at the water surface, and water body enters platform with speed of relative movement, does not need power to provide and draws water, and is fit to large-scale water body in lake algal tufa and handles.

7) adaptability to water body in lake eutrophication degree difference and suspended matter value volume and range of product is strong, and can the self-adaptation adjustment.

Claims (3)

1. algae substances magnetic is caught moving-out device in the eutrophication water, it is characterized in that this device comprises automatic dosing system, magnetic is caught system and algae/water separating system, and each system is arranged on the mobile platform,, as carrier and being provided, power in the lake, can freely travel with mobile platform.

2. device according to claim 1 is characterized in that described automatic dosing system comprises volume pump, dissolving tank and magnetic flocculant supply cabin; The described magnetic system of catching comprises stirring rake, conduit and dividing plate; Described algae/water separating system comprises permanent magnetism disk body separator, scraper plate and auger; Described conduit is arranged on the mobile platform mid-way, can establish 6-10 conduit, and each is wide to be about 3-5m, dark 0.5-1.0m, described stirring rake is arranged on the conduit front portion, and described conduit rear portion is a flocculation zone, long is 6-10m, and its bottom is for gradient shape and be provided with dividing plate and baffle plate.

3. device according to claim 1 and 2 is characterized in that this device can be assisted to establish after-treatment system, comprises magnetic separate chamber, magnetic recovery capsule, flco filter-press dehydration device and mud cake storing chamber.

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