JPH01287310A - Disposal and collection device of water bloom - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an apparatus for treating and recovering blue-green algae.

[Prior art]

Traditionally, algal blooms in lakes and marshes are collected by collecting the algae collected by the wind using a collection boat, or by sucking raw water into a tank, treating it with a purification device, and then returning the treated water to the lake.
There were two methods of gradually purifying the process by repeating the process, but with these conventional methods - the amount of treatment per day is determined by natural conditions and the size of the plant, and currently the results are not satisfactory. is not obtained.

Also, during surfacing, all the blue-green algae did not necessarily gather in a certain place, and collection was uneven.

C. Object of the Invention The object of the present invention is to obtain an apparatus for treating and recovering blue-green algae that eliminates the above-mentioned drawbacks.

[Structure of the invention]

The algae treatment and recovery apparatus of the present invention includes a catamaran disposed in a water area where the algae is to be treated and recovered, a pressurized water discharge mechanism disposed at the front of the catamaran, a treatment agent dispersion mechanism, and an agitation mechanism. , comprising a bottom plate disposed below the pressurized water discharge mechanism, treatment agent dispersion mechanism, and stirring mechanism, and an algal bloom collection mechanism disposed at the rear of the catamaran.

[Embodiments of the invention]

The present invention will be explained in detail below with reference to the drawings.

In the present invention, as shown in FIG. 1, an area at a depth of 3 m, for example, where algal blooms are to be collected is divided into a plurality of small parts, and these parts are surrounded by a silt protector 1 and divided into elongated areas of 20 m x 200 m, for example.

For example, as shown in Figs. 2 and 3, this silt protector 1 has an impermeable skirt 3 with a height of about 5 m and a float cover 4 attached to the bottom of a round rod-shaped float 2 made of expanded polystyrene with a diameter of 1 m and a length of 20 m. As shown in the first article, 10 weight chains 5 are fixed to the lower part of this skirt 3 and are connected to each other, each with a rope 6.
It is fixed to the bottom of the water with anchor 7.

Further, in the present invention, the processing and recovery device 8 is then floated in this area as shown in FIGS. 4 and 5.

As shown in FIG. 4, this processing and recovery device 8 connects two boats 11.11 separated from each other, a scaffold board 12 fixed between the boats 11.11, and the rear ends of boats II and 11. A collection box 13 provided at an intermediate point and the boat 1-
11. A pressurized water tank 14 provided on the 11, a compressor 15,
Processing agent tank 16, processing agent supply pump 17, and generator 19
, a dehydrator 20, a submersible pump 21 provided in the recovery box 13 so as to be connected to the dehydrator 20, a vacuum drainage pump 22, and a propulsion propeller 23 provided at the rear end of the boat 11.11. A pressurized water nozzle 25 provided at an intermediate point connecting the front end of the boat 1-11.11 and the front end of the collection box 13 so as to extend outward and a guide frame 24 extending outward. and treatment agent spray nozzle 1
8 and a stirrer 26.

The collection box 13 has an open front face, and has a weir (not shown) that is slightly lower than the water level, for example 80111, that closes the front face opening.

As shown in FIG. 5, the guide frame 24 includes a pipe 27 whose base end is rotatably supported on the front surface of the collection box 13 and the bows 11, 11, and a flexible pipe 27 attached to the lower part of the pipe 27. It is composed of a water-impermeable skirt 28, a weight chain 29 fixed to the lower part of the skirt 28, and a two-piece float 30 made of expanded polystyrene which is similarly attached to the lower part of the pipe 27 at a distance from each other.

Furthermore, in the present invention, a bottom plate 9 is disposed below the processing agent spray nozzle 18, pressurized water nozzle 25, and agitator 26, and this bottom plate 9 is suspended from the processing and recovery device 8 by a hanging member 1o, so that the lower surface of this bottom plate 9 is The position should be, for example, 10 to 30 cm away from the bottom of the water.

Since the apparatus of the present invention is as described above, during operation, the treatment agent tank 1
6, a treatment agent consisting of a powdered reaction product of clay minerals and inorganic acids such as Ah03 and FezO is spouted from the spray nozzle 18 via the supply pump 17 into the water in the treatment area, and the spouted portion is Stirring is performed using the stirrer 26, and pressurized water is jetted from the pressurized water tank 14 into the stirring portion through the pressurized water nozzle 25 to create fine air.
It is attached to the flocculated blue-green algae and floated to the surface.

The catamaran consisting of the boats 11 and 11 moves forward at a speed of about 1 to 2 m/min, and continuously performs the above-mentioned spraying, stirring, and surfacing of algal blooms. Further, the floating blue-green algae is guided by a front guiding frame 24 provided at the tip of the shaft of the catamaran, and the floating blue-green algae is guided to the rear guiding frame 24 and dropped into a recovery box 13 provided at the stern.

The algae collected in the collection box 13 is sent to a dehydrator 20 by a submersible pump 21, where it is dehydrated, and the clear water is returned to its original state by a vacuum drainage pump 22.

The treatment agent dispersion nozzle, pressurized water nozzle 25, stirrer and bottom plate are combined with an elevating device so that they can respond to changes in water depth.

The boat 11 constituting the catamaran in the above embodiment may be a mere floating body, and the silt protector 1 may be omitted.

〔Effect of the invention〕

As described above, the apparatus of the present invention has the advantage of being able to efficiently process and recover blue-green algae.

In addition, in the apparatus of the present invention, when the treatment agent spray nozzle 18, the pressurized water nozzle 25, or the agitator 26 is operated, the bottom plate 9 may disturb the bottom of the water, causing floating mud on the bottom to fly up and mix with the algae, reducing the treatment efficiency. Since it is provided, it is possible to prevent disturbance of the water bottom.

[Brief explanation of the drawing]

Fig. 1 is an explanatory plan view of the recovery area, Fig. 2 is a perspective view of the silt protector, Fig. 3 is its front view, Fig. 4 is an explanatory perspective view of the device of the present invention, and Fig. 5 is the guide frame. FIG. 1...Silt Prochiku-12...Float, 3...
・Skirt, 4... Float cover, 5... Chain, 6... Rope, 7... Anchor, 8... Processing and recovery device, 9... Bottom plate, 10... Hanging member, 11・
... Boat, 12 ... Scaffolding board, 13 ... Collection box, 1
4... Pressurized water tank, 15... Compressor, 16... Treatment agent tank, 17... Treatment agent supply pump, 18... Treatment agent spray nozzle, 19... Generator, 20...・Dehydrator, 2
1... Submersible pump, 22... Vacuum drainage pump, 23
... Propulsion propeller, 24 ... Guidance frame, 25 ... Pressurized water nozzle, 26 ... Stirrer, 27 ... Pipe, 2
8...Skirt, 29...Chain 30...Float. Bird 1511 3F, 31R i4 group

Claims (4)

[Claims] (1) A catamaran disposed in a body of water where blue-green algae is to be treated and collected, a pressurized water discharge mechanism disposed at the front of the catamaran, a treatment agent spraying mechanism, an agitation mechanism, and the pressurized water discharge mechanism. A blue-green algae treatment and recovery device comprising: a bottom plate disposed below a treatment agent dispersion mechanism and an agitation mechanism; and a blue-green algae recovery mechanism disposed at the rear of the catamaran. (2) The algae treatment and recovery apparatus according to claim 1, wherein each mechanism and the bottom plate arranged at the front part of the catamaran are movable up and down by a lifting device. (3) The algae treatment and recovery apparatus according to claim 1, further comprising an impermeable member surrounding a water area in which the algae is to be treated and recovered. (4) The algae treatment and recovery circuit according to claim 1 or 2, wherein the recovery mechanism has a guide frame extending forward and outward from the front portion thereof.