JP2003117562A - Active cleaning equipment for water and bottom sediment of water area - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an equipment for performing an active cleaning treatment of water and bottom sediment in watersides existing nearby in living, such as ponds of shrines, temples and parks, moats, reservoirs, and lakes and ponds, or in water areas, such as ponds of golf courses. SOLUTION: This equipment for active cleaning of the water and bottom sediment of the water areas is used by injecting a water active cleaning agent O into raw water containing the pollutants of the water areas, such as the ponds, mixing and agitating the raw water to flocculate the organic matter and nutrient salts mainly suspended and dissolved in the water, injecting fine air bubbles to floc to float and separate the floc by the fine air bubbles onto the water surface and to separate an remove the pollutants from the inside of the water and recovering and treating the floc.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention mainly purifies water containing pollutants from water bodies such as ponds, moats, and reservoirs, and purifies bottom sediment such as sludge and suspended mud. Belongs to the field of processing technology.

[0002]

2. Description of the Related Art Wastewater treatment technologies include factory wastewater, domestic wastewater,
It is to remove pollutants from wastewater such as sewage so that the wastewater falls below the standard value. Pollutants include organic or inorganic substances, suspending or dissolving substances, presence or absence of harmfulness, inorganic nutrient salts, etc., depending on the nature and concentration of these pollutants, various, for example, Physicochemical treatment, biological treatment, or a combination of these treatments has been performed.

By these treatments, solid-liquid separation, oxidation of organic substances and reducing substances, adjustment of PH, removal of harmful substances and inorganic nutrient salts (mainly phosphorus and nitrogen compounds), treatment and disposal of produced sludge. Becomes For example, in organic wastewater, when a suspending substance is contained first, the suspending substance is removed by solid-liquid separation, and when the concentration of the pollutant substance exceeds the standard value after the removal, it is usually a biological substance. Biological processing. If the standard value is still exceeded, further physicochemical treatment is performed.
In any case, sterilization is performed so that the coliform bacteria will be below the standard value at the time of discharge.

In the case of inorganic waste water, solid-liquid separation is carried out when there is a suspended substance, and physicochemical treatment is further carried out when there is a harmful substance to separate the harmful substance as a solid substance or to render it harmless. To do. Further, when the pollutant exceeds the standard value, it is necessary to perform advanced treatment such as adsorption treatment or ion exchange. Ultimately, along with strengthening wastewater standards, we will expand the scope of wastewater treatment to remove trace amounts of harmful substances such as dioxins and environmental hormones.

As described above, in the wastewater treatment, the treatment is performed stepwise according to the concentration and type of the pollutant, and for convenience, it is called primary treatment, secondary treatment, or tertiary treatment (advanced treatment).
The primary treatment mainly removes suspended solids physically, the secondary treatment biologically decomposes organic substances, and the tertiary treatment cannot remove BO by the secondary treatment.
Aim to treat D, COD, phosphorus, nitrogen, etc. Since the treatment cost becomes higher as the higher-order treatment is performed, it is important to select the treatment process according to the discharge standard of the discharge destination. When selecting equipment, construction cost, equipment area,
It is necessary to consider the difficulty such as allowable installation area, operating cost, maintenance cost, and length of processing time. Even if a high-level treatment is aimed at, the cost and the input energy per removed pollutant may increase and the environmental load of the process may increase.

[0006]

In view of the above circumstances, the present invention provides a water device such as a pond, a moat, or a pond rich in organic matter with a simple device and quickly removes pollutants to improve the water quality. It is an object of the present invention to provide an apparatus for improving the water quality and bottom quality of a water area by improving the water quality and bottom quality of the pond.

[0007]

The first aspect of the present invention for solving the problem is to provide a water quality active cleaning agent 0 , a water quality active cleaning agent injecting device 2, a mixing and stirring device 4, and a fine bubble generating device. 6 and a flotation / separation / aggregate collection device 9 at least, which is a water bottom active purification device for a water area such as a pond, wherein the water purification agent 0 is a precipitation purification agent 01 or a flocculation separation agent 0.
3, the water quality active purifying agent injecting device 2 includes a precipitation purifying agent 0
1 or the coagulation / separation agent 03 can be selectively or simultaneously injected, and depending on the water quality, one or both of the precipitation purification agent 01 or the coagulation / separation agent 03 can be injected simultaneously, or one after the other can be sequenced to pollute the water area. By injecting into raw water containing a substance and mixing and stirring with a mixing and stirring device 4, suspended particles such as water-bloom, organic matter, and soil particles, which are pollutants, are aggregated to dissolve dissolved organic matter and nutrient salts. Precipitated and agglomerated to form agglomerates (flocs) that are large lumps, and the fine bubble generator 6 generates fine bubbles and introduces the fine bubbles into the treated water in a direction to urge the fine bubbles toward the water surface to agglomerate. And the flotation separation flocculates 10 are floated and separated on the water surface to separate contaminants from the water, and the flotation separation flocculates recovery device 9 causes the flotation separation flocculates 10 to be separated. A water sediment activity purification device of water for recovering.

A second aspect of the present invention for solving the problem is a water activity purifying agent 0 and a water activity purifying agent injector 2.
A mixing and stirring device 4, a fine bubble generating device 6, a flotation and separation agglomerate collecting device 9, a raw water pumping device 81, a fresh water discharge device 82, a mixing and stirring tank 51, and a fine bubble adding tank 52.
And a flotation / separation tank 53, which is a water bottom active purification device for a water area such as a pond, wherein the water active purification agent 0 contains a precipitation purification agent 01 or a coagulation separation agent 03, and a raw water pumping apparatus Reference numeral 81 is capable of pumping raw water in a water area containing pollutants or other drainage into the mixing and stirring tank 51, and the water activity purifying agent injecting device 2 selectively uses the precipitation purifying agent 01 or the coagulation separating agent 03. It is possible to inject at the same time, and according to the water quality, one or both of the precipitation purification agent 01 and the aggregation / separation agent 03 are simultaneously or one after the other, and the other is ordered, and in the mixing and stirring tank 51, the raw water containing pollutants is added. By injecting into water and mixing and stirring with the mixing and stirring device 4, suspended particles such as water-bloom, organic matter, and soil particles, which are pollutants, are aggregated, and dissolved organic matter and nutrient salts are precipitated and aggregated into large particles. Chunk of Turned into some aggregates (flocs), fine bubble generator 6 generates microbubbles, mixing and stirring tank 5
In the micro-bubble adding tank 52 adjacent to No. 1, the micro-bubbles are introduced into the treated water in the direction of urging in the water surface direction to promote coagulation, and the flocculates are floated and separated.
As a result, the contaminants are separated from the treated water by being floated and separated on the water surface as 0, and the flotation separation aggregate collecting device 9
Is a floating separation collection tank 53 adjacent to the fine bubble addition tank 52.
In the above, the floating separation aggregate 10 is collected and removed from the treated water. It is a purification device.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention determines the water quality and bottom quality of water bodies existing in everyday life such as shrines, temples and parks, moats, reservoir ponds, lakes and marshes, or water areas such as golf course ponds. The present invention relates to a device for active purification treatment. Such water areas are relatively small, have little spring water, and are often closed from other areas. In a relatively large area such as Shinobazu Pond in Ueno, it is possible to partition into small blocks as appropriate and to process each small block continuously or batchwise. Since the partition has a high speed of the active purification treatment of the present invention, it is not always required to be hermetically sealed, and it may be partitioned so as to have a certain resistance to the water flow which is the movement of water.

The water in such a place is a stop water in which domestic wastewater easily flows in, and there is no flow. The depth of the water is shallow, and it is easily affected by the environment and the seasons. In addition, the concentration of suspended solids and dissolved substances of organic matter becomes high, and a large amount of soil particles, water-bloom, etc. are present or generated, so that the transparency is low and the appearance is spoiled. In addition, depending on the season, a large amount of microorganisms, a decrease in transparency, and a bad odor are often generated. Therefore, it is necessary to finish the treatment in a short period of time for the active purification treatment, and it is difficult to secure the installation location for the treatment equipment.Therefore, it is necessary to make it small and small, and it is necessary that the operating capital etc. be reasonable. . Further, it is more preferable that the collected substances such as the collected organic substances can be reused in soil, fertilizers and the like.

FIG. 1 is a schematic diagram of a first embodiment of the present invention, which is of a type that is installed directly at an original position in a target water area and treated at that position. (A) is a process of adding and mixing the water quality active purifying agent 0 to the target water area. (B) is precipitation aggregation and aggregation process. (C) is a process of injecting fine bubbles, which is a process of promoting aggregation and causing the contaminants to float as flotation / separation aggregates 10 on the water surface. (D) is a process of collecting and disposing of the floating separated aggregate 10. Here, 0 is a water quality active purifying agent, and is composed of a precipitation purifying agent 01 and an aggregation separating agent 03. Reference numeral 2 is a water purification activator injection device such as a pump, 4 is a mixing and stirring device such as a pump, 6 is a fine bubble generating device, 9 is a flotation-separated aggregate collection device, and 10 is a flotation-separated aggregate.

The water activity purifying agent 0 includes a precipitation purifying agent 01 and an aggregating / separating agent 03. As the precipitation cleaning agent 01, for example, Cima Rocks (trade name) is used. Cima Rocks is a type of what is generally called Rock Water (or Rocks Water: Iwamizu). In other words, rock water is a generic name for chemicals that include seamarox and are eluted from rocks. Rockwater is a large number of metal salts obtained by dissolving mineral corrosive rocks containing various metal oxides and non-metal oxides (“sabbrolite”) or soils further weathered in inorganic acid solutions. It is mainly composed of an acidic additive containing a mineral component of a non-metal salt as a main component, and is widely used as a water activity purifying agent for water treatment (for example, JP-A-58-21670).
(See Japanese Patent Publication No. 5).

Rock water is an inorganic liquid obtained by extracting mineral elements from natural minerals, and it has been proved that it has no toxicity. The main components are Al, Fe, Mg, K, Ti,
They are Ca, Mn, Na, V, Rb, Si, Zn, W, Co, Li, Cu and the like. By containing this abundant inorganic substance, the water quality of the treated water can be activated and purified. The water to be treated, which is the target of use, is often wastewater in which spoilage components of natural substances are dissolved, and it cannot be expected to treat industrial wastewater such as petroleum products and plating. Specifically, it includes kitchen drainage, food industry drainage, livestock drainage, papermaking drainage, and the like. If an inorganic or polymeric flocculant is used as the pretreatment, the inorganic suspended substance or dissolved substance can also be subjected to the flocculation treatment.

As the flocculating and separating agent 03, for example, polyaluminum chloride is used. Polyaluminum chloride is a kind of popular inorganic coagulant, and is generally called simply as coagulant or sedimentation agent. It has the effect of aggregating inorganic or organic substances such as soil particles that are floating or dissolved, and can also be used as an inorganic pretreatment agent. The water-purifying agent 0 is injected by the water-purifying agent injecting device 2, but in view of the water quality of the treated water, the degree of pollution, the effect of the treatment, and the economical viewpoint, the precipitation purifying agent 01 and the coagulant separating agent 03 are treated. home,
Either one or both can be injected simultaneously, or one after the other, in sequence.

In the case of severely polluted water quality, an inexpensive coagulation / separation agent 03 is first used to coagulate inorganic or organic matter such as suspended or dissolved soil particles, and the coagulation is subjected to flotation as pretreatment. And then an expensive precipitation purification agent 0
By injecting 1, the substance that cannot be removed by the flocculating and separating agent 03 can be secondarily floated and separated. Of course, both can be injected at the same time. As for the effect of the treatment, although the precipitation purification agent 01 is expensive, it is possible to both activate and purify the water quality, and the aggregation separating agent 03 is inexpensive, but it is possible to purify the water quality and improve it. It is a thing.

The fine bubble generator 6 generates fine bubbles. When the fine bubbles (micro bubbles) are introduced into the treated water to act on the aggregate, the fine bubbles adhere to the aggregate,
Alternatively, agglomerates are attached around the fine bubbles, and the buoyancy lifts the agglomerates to the water surface, that is, floating separation. When the fine bubbles are introduced into the treated water, if a component that biases in the water surface direction is added, the floating separation will be performed more efficiently. If the jet of fine bubbles is introduced to stir the floating mud and sludge near the bottom of the water area, the mixing and stirring action of the water-purifying agent 0 can be promoted, and it can also have the function of a mixing stirrer. It is also possible to improve bottom sediment and purify activity. Here, the fine bubbles generated by the fine bubble generator 6 have a diameter of 5 μm or less.

As described above, by adding the water activity purifying agent 0 , suspended substances such as organic matter, soil particles, and water-blooms in the water to be treated are grown into non-dispersible large-sized agglomerates (flocs) and dissolved. It is possible to separate and remove the pollutants from the water by precipitating and aggregating the organic substances and nutrient salts present therein, or by aggregating with the agglomerates, and floating them as floating separation agglomerates 10 on the water surface by fine bubbles. Further, since mineral components and oxygen of fine bubbles are added to the water, the water and living organisms can be actively purified, and the ecosystem can be restored.

Further, the treated water in the bottom layer can be improved to be aerobic, the decomposition of the bottom mud can be promoted, and the elution of nutrient salts can be reduced. Due to the increase of dissolved oxygen and the action of minerals, not only the water quality but also the bottom mud is activated and purified, and the treated water is less likely to be polluted after the treatment. The flotation separation aggregate collection device 9 includes ropes, ropes, etc.
Alternatively, a rake (scraping tool), a silt protector, a vacuum pump, a scum collector, etc. are used as appropriate, and the flotation-separated aggregate 10 that has floated above the water surface can be easily collected. The collected product consisting of this aggregate can be easily dried by sun-drying, can be reused as an organic fertilizer, and can be sold depending on the conditions.

FIG. 2 shows a plant type which is a second embodiment of the present invention. It is a raw water pumping device 81, a fresh water discharge device 82, a mixing and stirring tank 51, a fine bubble addition tank 52, and a floater. It is provided with at least the separation and recovery tank 53, and is installed and operated near the target water area.
In addition, if it is installed on the vehicle, it can be easily moved, and the active purification treatment of the water bodies in various places can be planned cyclically. Here, 1 is a flow meter, 6 is a fine bubble injection nozzle, 7 is a fresh water suction port, 8 is a partition wall, 9 is a flotation / separation aggregate recovery device consisting of a scraping device, 11 is a recovery device, 12 is a recovery bag, Thirteen
Is a fresh water discharge port, 14 is a weir, 15 is an opening, 16 is a secondary flotation separation aggregate collection device, 51 is a mixing and stirring tank, 52 is a fine bubble addition tank, 53 is a floating separation collection tank, 54 is a fresh water discharge tank,
55 is a secondary flotation separation recovery tank.

This type has a raw water pumping device 81
Contaminated raw water is continuously or batchwise mixed by the stirring tank 5
1, the water quality active cleaning agent 0 is injected by the water quality active cleaning agent injecting device 2 in the same manner as in the first embodiment, and the same mixing and stirring device 4 such as a line mixer or a drop shaft is used. Can be mixed. Different from the first embodiment, each processing is performed in each processing tank that performs each processing partitioned by the partition wall 8, and each processing tank performs different processing almost at the same time. be able to.

The method of introducing the treated water into each treatment tank is carried out by an opening 15 provided at the bottom and a weir 14 provided at the top, depending on each partition wall 8. Weir 14 is a triangular weir, 4
There are various types such as a square weir and a full width weir, and the type and size of the opening 15 can be appropriately selected according to the flow rate, and the flow direction control of the treated water will be outlined with reference to FIG. Mixing and stirring tank 5
A partition wall 8 is provided between 1 and the fine bubble addition tank 52, and an opening 15 is formed below. The treated water to which the water activity purifying agent 0 is added to the raw water is agitated and mixed, and the contaminants are precipitated and aggregated to be aggregated, and introduced into the fine bubble addition tank 52 through the opening 15 below.

When fine bubbles are jetted from the fine bubble jet nozzle 5 to the above, the fine bubbles are adhered, and the fine bubbles are attached to the floating separation aggregate 10 depending on the components in the floating direction and the traveling direction. While levitating, proceed to the next tank. Since the partition wall 8 is provided between the fine bubble addition tank 52 and the floating separation collection tank 53, and the weir 14 is formed above, the flow of the treated water is controlled in that direction.
It is introduced into the floating separation recovery tank 53 over the weir 14. Here, in the treated water, contaminants are floated and separated on the surface of the water, and the agglomerate 10 is present, and thus, fresh water is present below. The floating separation aggregates 10 on the water surface are collected by the floating separation aggregates collecting device 9 such as a scraping device, and the collecting bag 12 is collected via the collecting device 11.
Is stored in.

The flotation separated agglomerates 10 recovered by the flotation separated agglomerate recovery apparatus 9 may be treated in the same manner as in the first embodiment of the present invention. The fresh water below is introduced into the secondary separation floating tank 55 through the opening 15 below the partition wall 8 which is the boundary with the adjacent secondary separation floating tank 55. The contaminant, which takes a long time for precipitation and aggregation, can be floated and separated in this tank and collected by the secondary separation floating flocculent collection device 16. Part of the lower fresh water is introduced from the fresh water suction port 7 to the fine bubble generator 6, and the fine water is used to generate fine bubbles. Most of the fresh water is introduced into the fresh water discharge tank 54 and discharged into the original pond or discharge channel by the fresh water discharge device 82.

FIG. 4 shows a processing flow of this plant type. That is, pumping raw water, injecting water-purifying agent 0 , mixing and agitation, precipitation agglomeration, injection of fine bubbles, flotation separation of precipitation agglomerates, separation and collection, bagging dehydration, secondary separation flotation, (10) discharge of fresh water, (11) It becomes organic fertilizer and waste treatment. In addition, in consideration of the size-equal relationship of the mixing and stirring tank 51, and because various measuring devices such as the flow meter 1 can be easily used, a drip pump, the flow meter 1 or the like is used to form the aggregate. Then, the quantitative relationship and the current system state can be easily grasped, and each process can be controlled to the optimum value.

The relationship between the agglomerates generated and the fine bubbles is the same as in the first embodiment, but can be controlled to an optimum value by the quantitative relationship between the introduction direction and the bubbles. It is possible to easily collect the agglomerates floating on the water surface by using the same device as in the first embodiment. If the collected agglomerates are packed in a bag, the agglomerates can be simultaneously dehydrated during the recovery process. Will also be carried out, and it will be easier to turn it into an organic fertilizer in a shorter time.

[0026]

[Table 1] Table 1 shows the experimental results of the treatment in Ueno Shinobazuike.
Here, "SS" Suspended Solid: An organic or inorganic substance suspended in water, which is an index indicating dirt. Does not include large items that can be removed with a screen. "Turbidity": An index showing the degree of turbidity of water. "Chlorophyll": Indicates the dissolved amount of phytoplankton. It is determined by measuring the amount of chlorophyll in water. "COD" Chemical Oxygen Demand: Chemical oxygen demand. The amount of oxygen required to oxidize oxidizable substances in wastewater with an oxidizer, which is an index of contamination by organic substances. As the reference value, an analysis value by the potassium permanganate method is usually used. "TN" Total Nitrogen: Total nitrogen content. It represents the total amount of inorganic nitrogen (ammonia nitrogen, nitrite and nitrate nitrogen) and organic nitrogen (nitrogen of proteins and various organic compounds). "TP" Total Phosphorus: Total phosphorus content. The total amount of phosphorus compounds in water is represented by the amount of phosphorus.

Looking at the operation status below, in the case of FIG. 1, for example, when 20 tons of polluted water is processed by the 5 kW fine bubble generator 6, the processing status is as follows. Since the equipment such as materials and equipment is compact and simple, it is possible to start the activity purification treatment work in about 30 minutes after the equipment is loaded. When the water purification agent for water treatment 0 for water treatment is injected into the target water area, coagulation starts in about 10 minutes, and when water in the target water area is circulated and mixed by the submersible pump, the pollutant is converted into coagulated material in about 10 minutes. .

Then, when fine bubbles are injected, the aggregates float and separate in about 50 minutes. This flotation-separated aggregate is 1
It can be collected in about 0 minutes, dried and used as organic fertilizer or treated as waste. Even if it is dried in the sun, 1
One day is enough. Since the transparency of the processing status improves during viewing, it is immediately effective and easy to see.

[0029]

EFFECTS OF THE INVENTION Oxidizing action of the water quality active purifying agent 0 can remove pollutants such as water-soluble organic substances and nutrient salts to the outside of the system. Minerals and active oxygen contained in the water quality purification agent 0
Actively purifies water and bottom sediment. The water purification agent 0 and fine bubbles are used to deposit and aggregate pollutants to separate them, so that the purification treatment can be carried out in a short time, and the transparency is improved during viewing. In addition, it is possible to flexibly respond to changes in pollutants of raw water and quantitative changes.

Actively purified water contains a large amount of minerals and greatly contributes to the restoration of the ecosystem. In addition, since the sediment quality is improved, the growth of benthic organisms such as rotifers is actively purified.
Due to the effect of the water quality active purifying agent 0, an unpleasant odor is removed, and an offensive odor is less likely to occur during work. The bottom water layer is improved to be aerobic to reduce the elution of nutrients from the bottom layer. Further, in particular, in the first embodiment, it is possible to stir the floating mud and sludge in the bottom layer, float and separate them, and remove them outside the system.

In the second embodiment, since various measuring devices are mounted and the quantitative relationship between the respective elements can be grasped, the controlled operation in the optimum state is possible. Both of them are compact in size, so they can be installed and processed even in a narrow space, and they do not impair the landscape. Further, since it can be moved, it is possible to easily work at a golf course pond or the like for a short time and to withdraw it after the work. In the car,
Work in a wide range of places can be patroled regularly. In addition, when introducing fine air bubbles into the treated water, a component that urges them toward the water surface is added,
Float separation is performed more efficiently, which is also convenient for stirring and mixing.

[Brief description of drawings]

FIG. 1 is a schematic diagram of an original position of a water area according to a first embodiment of the present invention. (A) Injecting the water activity purifier 0 and mixing and stirring process, (b) Precipitating and condensing process of pollutants, (c) Injecting fine bubbles and floating separation process of condensate, (d) Collecting and disposing process of aggregates.

FIG. 2 is a perspective view of an entire plant according to a second embodiment of the present invention.

FIG. 3 is a diagram illustrating an outline of flow direction control of treated water inside a plant.

FIG. 4 is a diagram showing a flow of processing in a plant according to a second embodiment of the present invention.

[Explanation of Codes] 0 ... Water purification agent 01 ... Precipitation purification agent 03 ... Aggregation / separation agent 1 ... Flowmeter 2 ... Water activation agent injection device 4 ... Mixing stirring Device 5 ... Fine bubble injection nozzle 6 ... Fine bubble generator 7 ... Fresh water suction port 8 ... Partition wall 9 ... Flotation separated aggregate collection device 10 ... Flotation separated aggregate 11 ... ..Recovery device 112 ... recovery bag 13 ... fresh water outlet 14 ... weir 15 ... opening 16 ... secondary flotation separated aggregate collection device 51 ... mixing stirring tank 52 ...・ Fine bubble addition tank 53 ・ ・ ・ Floating separation recovery tank 55 ・ ・ ・ Secondary separation floating tank 54 ・ ・ ・ Clean water discharge tank 81 ・ ・ ・ Raw water pumping device 82 ・ ・ ・ Clean water discharge device

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) C02F 1/40 C02F 1/40 CE E 1/68 510 1/68 510Z 520 520K 540 540Z 3/20 3 / 20 Z 11/02 11/02 11/14 11/14 B (72) Inventor Masayoshi Yoshida 1-10 Kojimachi, Chiyoda-ku, Tokyo Within Toyo Construction Co., Ltd. (72) Koji Yokoyama 1-chome, Kojimachi, Chiyoda-ku, Tokyo 10 Toyo Construction Co., Ltd. (72) Inventor Ichiro Osugi 1-10 Kojimachi, Chiyoda-ku, Tokyo Toyo Construction Co., Ltd. (72) Inventor Kenji Naegi 1-10 Kojimachi, Chiyoda-ku, Tokyo Toyo Construction Co., Ltd. F Term (reference) 4D015 BA19 BA22 BB05 BB08 BB09 CA20 DA03 DA31 DC02 DC04 EA33 4D029 AA01 AB05 BB11 4D037 AA05 AB02 AB04 BA03 CA07 CA08 CA13 4D051 AA04 AB07 CA01 CA02 EB08 4D059 AA30 BA03 BJ09 DA51 DA70

Claims (2)

[Claims] 1. An active water purification agent ( 0 ), an active water purification agent injecting device (2), a mixing and stirring device (4), a fine bubble generating device (6), and a flotation separation aggregate collecting device (9). ) Is provided at least in a water body such as a pond, wherein the water-purifying agent ( 0 ) contains a precipitation purifying agent (01) or a coagulation separating agent (03). The injection device (2) is a precipitation purification agent (01).
Alternatively, the coagulation-separating agent (03) can be selectively or simultaneously injected, and one or both of the precipitation purification agent (01) and the coagulation-separating agent (03) can be injected simultaneously or one after the other, depending on the water quality. By ordering and injecting into raw water containing pollutants in the water area, and mixing and stirring with a mixing and stirring device (4), suspended particles such as water-bloom, organic matter, and soil particles in water that are pollutants are aggregated and dissolved. Agglomerates (flocs) that are large-sized lumps by precipitating and aggregating organic substances and nutrient salts that are present, and the fine bubble generator (6) generates fine bubbles, and urges the fine bubbles toward the water surface. Is introduced into the treated water to promote coagulation, and at the same time, the agglomerates are floated and separated on the surface of the water as flotation and separation agglomerates (10) to separate pollutants from the water. ) To Ri, the flotation aggregate (10) Water sediment activity purification device of water for recovering. 2. A water activity purifying agent ( 0 ), a water activity purifying agent injection device (2), a mixing and stirring device (4), a fine bubble generating device (6), and a flotation separation aggregate collecting device (9). )When,
A raw water pumping device (81), a fresh water discharge device (82),
An apparatus for purifying water bottom sediment in a water area such as a pond, which comprises at least a mixing and stirring tank (51), a fine air bubble addition tank (52), and a flotation separation recovery tank (53), the water activity purifying agent ( 0 ) Contains a precipitation purification agent (01) or a coagulation separation agent (03), and a raw water pumping device (81) pumps raw water in a water area containing pollutants or other waste water into a mixing stirring tank (51). It is possible that the water activity purifying agent injection device (2)
Alternatively, the coagulation-separating agent (03) can be selectively or simultaneously injected, and one or both of the precipitation purification agent (01) and the coagulation-separating agent (03) can be injected simultaneously or one after the other, depending on the water quality. By ordering and pouring into raw water containing pollutants in the mixing and stirring tank (51) and mixing and stirring with the mixing and stirring device (4), suspended water such as water-bloom, organic matter, and soil particles, which are pollutants, are suspended. The turbid particles are aggregated, and dissolved organic substances and nutrient salts are precipitated and aggregated to form aggregates (flocs) that are large lumps, and the fine bubble generator (6) generates fine bubbles, and mixes and stirs the tank ( In the fine bubble addition tank (52) adjacent to 51), the fine bubbles are introduced into the treated water in a direction of urging them toward the water surface to promote aggregation, and at the same time, the aggregates are floated and separated aggregates (10). On the water surface By floating and separating, contaminants are separated from the treated water, and the flotation and separation agglomerate recovery device (9) includes a fine bubble addition tank (5
In the flotation separation recovery tank (53) adjacent to 2), the flotation separation aggregate (10) is recovered and removed from the treated water, and the fresh water discharge device (82) returns the fresh water from which the pollutants have been removed to the original water. An active purification device for water bottom sediment in water areas such as ponds and water areas that are discharged into discharge channels.