JPH06170356A - Purification mechanism of lake and swamp water - Google Patents

Abstract

PURPOSE:To provide a purification mechanism capable of efficiently removing algae which is difficult to exterminate and being applied even in general lakes and swamps. CONSTITUTION:The purification mechanism includes a water intake means 12, a discharge means 20 and a means 18 for adding a drug to the water taken in. The discharge means 20 can be arranged at several spots around the peripheral area of a lake or a swamp W.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a purification mechanism for lakes (including ponds and other reservoirs), and more particularly to a purification mechanism capable of effectively purifying lakes contaminated with algae such as water-bloom.

[0002]

2. Description of the Related Art In response to increasing awareness of environmental problems in recent years, various technologies have been developed for water purification.
Here, it is the most difficult to purify water to remove algae such as water-bloom. This is because algae such as blue-green algae are minute and pass through the filter, so that they cannot be removed by filtration, and they are not killed even when they are irradiated with ultraviolet rays.
Therefore, conventionally, it was difficult to effectively remove algae such as water-bloom.

Here, even in the conventional technique, algae such as water-bloom are sufficiently removed in the purification equipment in the water purification process of water supply. In the purification facility for water purification treatment of water, water is taken from a water storage source, but algae such as water-bloom may be generated at the water storage source. In such a case, a chlorine-based agent and a coagulant (for example, a sulfuric acid band) are put into the taken water, and a flow velocity of 1-2 m / se in the water channel meandering the water into which the agent is put.
c. Pass it in about a degree and introduce it into the pool. In the pool, algae such as water-bloom mixed in water are killed by the chlorine-based drug and become a mass called "floc" by the coagulant. Removal of algae such as water-bloom is effectively performed by removing flocs from the pool. And
It is no exaggeration to say that the above-described method of removing algae such as water-bloom as flocs and removing them is currently the only technology for removing algae such as water-bloom.

[0004]

However, the above-mentioned method is a technology applicable only because it is a purification facility for water purification treatment of tap water, and it includes general lakes (including ponds and other water storage facilities:
The same shall apply hereafter). Flock formed by algae such as water-bloom is very fragile and easily collapses. Therefore, the flow rate of water charged with a drug or the like is sufficiently slow, for example, a flow rate of 1-2 m / sec. This is because it is necessary to flow through the channel and then introduce it into the pool or the like, but it is impossible to provide the channel or the pool in a general lake or marsh.

The present invention has been proposed in view of the above-mentioned problems of the prior art, and can effectively eliminate algae such as water-bloom which is difficult to remove, and can be applied to general lakes and marshes. The purpose is to provide a lake purification system.

[0006]

The lake purification mechanism of the present invention connects and takes in water intake means for taking in water from the lake, discharge means for returning the treated water to the lake, and water intake means and drainage means. The discharge means includes a piping system for mixing the chemicals into the water, a pump for taking in the water from the water intake means, and a drive source for the pump, and the discharge means is arranged at a plurality of locations on the peripheral edge of the lake.

As described above, in this specification, the word "lake" is used as a broad concept including a pond and other water storage means.

In the practice of the present invention, the plurality of discharge means discharge the water mixed with the chemicals in a manner that the water is concentrated in one place of the lake where the purification treatment is performed, and the discharged water (the chemicals are It is preferable that a floc discharging means such as an underwater pump for removing flocs is provided at a location (in the lake) where the mixed water) is concentrated.

Here, as the above-mentioned chemicals, chlorine-based chemicals and coagulants (for example, sulfuric acid band) are preferable.

[0010]

According to the lake purification system of the present invention having the above-mentioned structure, when the pump and its driving source actuate the water intake means to take in water from the lake and the taken water flows through the pipe system. The water mixed with the chemicals is returned to the lake from a plurality of locations on the periphery of the lake by the discharging means. When the water mixed with the chemicals is returned to the lake, it forms flocs composed of algae such as blue-green algae as in the meandering flow path and pool in the purification facility on the water supply side of the water supply. Then, by removing the formed flocs, the removal of algae such as blue-green algae, which was difficult in the past, is achieved.

Here, in the present invention, the flow rate of water mixed with the chemical agent is 1-2 m / sec. There is no need for a special flow path or pool to control the degree. This is because by returning the water mixed with the chemical to the original lake, the flow velocity of the water is sufficiently slowed and the formed flocs are not destroyed. Therefore, the lake purification mechanism of the present invention can be easily applied to a natural lake or the like simply by providing a piping system. This means that the present invention is very effective especially in cleaning a golf course pond.

[0012] If the water mixed with the chemicals is discharged in such a manner that the water is concentrated at one place in the lake where the purification treatment is performed, the flocs will be precipitated at the place where the water is concentrated. And
If a floc discharging means such as a submersible pump for removing flocs is provided at a place where flocs settle in the lake, that is, a place where water mixed with a chemical concentrates, the flocs that have settled can be immediately removed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the lake purifying mechanism of the present invention will be described below with reference to the accompanying drawings.

In FIGS. 1 and 2, a lake or marsh to be purified, for example, a pond W on a golf course, is provided with a purification mechanism of the present invention, which is generally designated by reference numeral 10. To explain mainly with reference to FIG. 1, the purification mechanism 10 is for taking in water means 12 for taking water from the pond W, a pipe L1 continuous to the water intake means 12, a drive pump 14 interposed in the pipe L1, and for driving the same. The motor 16 and the chemical mixing mechanism 18 that joins the pipe L1 and mixes the chlorine-based chemical and the sulfuric acid band (coagulant) with the water flowing through the pipe L1.

The pipe L1 is connected to an annular pipe L2 arranged so as to surround the pond W, and the pipe L2 is connected to the pipe L2.
A plurality of (five in FIG. 1) injection nozzles 20 that constitute a discharging unit that returns the water mixed with the chemicals to the pond W are provided. Then, the pipes L1 and L2 and the medicine mixing mechanism 18 constitute a piping system for connecting the water intake means and the drainage means and mixing the medicine into the taken-in water.

The plurality of jet nozzles 20 ... The water jetted from the jet nozzles 20 (the water mixed with the chemicals) is one of the ponds W as shown by streamlines T1-T5 (dotted arrows) in FIG. It is installed in a manner that concentrates on the location. And streamline T1
A submersible pump WP for removing flock is provided at a location where -T5 is concentrated.

As shown in FIG. 2, the pump 14 is buried in the ground, but the drug mixing mechanism 18 is exposed above the ground. Then, the necessary chemicals (chlorine chemical and sulfuric acid band) are supplied through the exposed areas on the ground.

Next, the operation of the embodiment shown in FIGS. 1 and 2 will be described. The water in the pond W to be purified is taken in from the water intake means 12 (see arrow S in FIG. 2), and the chlorine-based chemicals and the sulfuric acid band are mixed by the chemical mixing mechanism 18 when flowing through the pipe L1. The water mixed with the chemical is jetted into the pond W from the plurality of jet nozzles 20 through the pipe L2, and the jetted water is the submersible pump WP as shown by the flow lines T1-T5.
It flows so that it concentrates on the installation location of.

Here, when the water mixed with the chemical is injected into the pond W, the flow velocity sharply decreases. As a result, algae such as blue-green algae that have been killed by the chlorine-based drug are coagulated by the sulfuric acid band and form flocs without disintegration. When the water concentrates in the pond W as shown by the flow lines T1 to T5, the flocs also gather at the installation location of the submersible pump WP. Since the submersible pump WP is located in the center of the pond W, the flow velocity of the jet flow from the jet nozzle 20 is also extremely low, and the flocs settle. In addition, the flocs that have settled through the drainage system (not shown) by the submersible pump WP.
It is discharged outside.

Here, it is not always necessary to discharge the flocs by the submersible pump WP. It is possible to set the period when the amount of sedimentation of flocs is more than a certain level, and intermittently dispose of the flocs by the submersible pump.

In the embodiment described with reference to FIGS. 1 and 2, the formation and removal of the flocs of algae such as water-bloom are performed only in the pond W, but before the water mixed with the chemicals is returned to the pond W. It is also possible to form and remove flocs. In FIG. 3, flocs are formed and removed before returning to the pond W.

In FIG. 3, the water to be treated which has been taken in from the water intake means 12 is sent to the water tank 26 via the pipe L1. The water tank 26 is of a type that generates a so-called "double jet flow", and is configured such that the chlorine-based drug and the sulfuric acid band are supplied from the drug mixing mechanism 18.

The water that is sufficiently stirred and mixed with the medicine in the water tank 26 flows through the pipe L4. A flock forming mechanism 28 is interposed in the pipe L4, and a plurality of baffle plates are provided in the mechanism 28, which have the function of causing the water mixed with the medicine to meander and delaying the flow velocity thereof. Then, as a result of the delayed flow rate, flocs are formed from algae in the mechanism 28. Flock and water flow through the pipe L5 in which the pump 32 is interposed, and the pipe L2 and the injection nozzle 20.
It is returned to the pond W via (not shown in FIG. 3). Then, the flocs settle in the pond W as indicated by the symbol F.
The precipitated flocs F are discharged to the outside of the system (arrow D) via the recovery means 34 and the pipe L6. The discharge of the precipitated flocs F is based on the operation of the pump 36.

FIG. 4 shows the flock forming mechanism 2 in FIG.
8 shows an example. In FIG. 4, the mechanism 28 is composed of three parts 28-1, 28-2, 28-3, and each part has a plurality of baffles 30-1, 30 respectively.
-2, 30-3 are provided. And part 30-
3 (inner diameter φ3 portion) has a cross-sectional area of portion 30-2 (inner diameter φ3
2) and the cross section of the portion 30-2 is twice as large as that of the portion 30-1 (portion of inner diameter φ1). The action of the baffle causes the flow of water mixed with the drug to meander, and the cross-sectional area increases, so that the flow velocity becomes gentle. The flock is preferably formed by the synergistic effect of these two types of actions.

It should be noted that the illustrated embodiment is merely an example and is not intended to limit the technical scope of the present invention.

[0026]

The effects of the present invention are listed below.

(1) Algae such as water-bloom are easily and effectively removed.

(2) There is no need for a special channel or pool for forming flocs.

(3) It can be easily applied to natural lakes and marshes simply by installing a piping system.

(4) In particular, it is very effective for purification of algae such as water-bloom in ponds of golf courses.

[Brief description of drawings]

FIG. 1 is a block diagram showing in plan a structure of one embodiment of the present invention.

2 is a side view of the embodiment of FIG.

FIG. 3 is a diagram showing a structure of another embodiment of the present invention as viewed from the side.

4 is a cross-sectional view showing a flock forming mechanism used in the embodiment of FIG.

[Explanation of symbols]

 W ... (Golf course pond) W 10 ... Purification mechanism 12 ... Water intake means L1, L2, L4, L5, L6 ... Piping 14, 32, 36 ... Pump 16 ... Motor 18 ... A drug mixing mechanism 18 is provided. 20 ... Injection nozzle T1-T5 ... Streamline WP ... Submersible pump 26 ... Water tank 28 ... Flock forming mechanism 34 ... Collection means

Claims (1)

[Claims] 1. A water intake means for taking in water from a lake, a discharge means for returning the treated water to the lake, a piping system for connecting the water intake means and a drainage means and for mixing a chemical into the taken water, and water intake. A purifying mechanism for a lake, comprising: a pump for taking in water from the means; and a drive source thereof, wherein the discharging means is arranged at a plurality of locations on the periphery of the lake.