JPH059590B2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> The present invention relates to a method for purifying swimming pool water, and more specifically, the present invention relates to a method for purifying swimming pool water, and more specifically, the present invention relates to a method for purifying swimming pool water, and more specifically, for purifying water overflowing from a swimming pool to a pretreatment filter in a pretreatment tank. The water is then filtered to remove oil.
The present invention relates to a method for purifying swimming pool water by sterilizing it and returning it to the pool.

≪Conventional technology≫ Conventionally, purification of swimming pool water has been carried out using methods such as the
59-80865, water overflowing from a swimming pool is sent into a first tank equipped with a pre-treatment filter, and this first tank is connected to a drain pipe or a first tank via a pump and a switching valve. The water stored in the second tank is connected to the second tank, and after being passed through a filter and a sterilizer by a pump, it is returned to the pool. In this method, oil, dirt, etc. that have not been removed by the pretreatment filter float on the water surface in the first tank and accumulate for a while, and when this accumulated amount reaches a predetermined amount, the switching valve The tank is connected to a drain pipe so that the water can be disposed of outside the pool.

≪Problems to be solved by the invention≫ However, with such conventional methods, the first
Not only is it extremely difficult to detect when oil, dirt, etc. that have accumulated floating on the water surface in the tank have reached a certain level, but it is also very difficult to detect when the oil, etc. that has accumulated on the water surface has been sucked up by a pump. It was necessary to stop the flow of overflow water while the pump was being discharged, and a vortex was generated near the suction port, causing floating oil and other substances to be dispersed, resulting in poor discharge efficiency.

The present invention was made in view of the above-mentioned problems, and its purpose is to provide a swimming pool that can continuously and efficiently discharge oil, dirt, etc. that have surfaced on the water surface in a pretreatment tank. To provide a water purification method.

≪Means for Solving the Problems≫ In order to solve the above problems, in the present invention, water discharged from a swimming pool is passed through a pretreatment filter in a pretreatment tank to remove dust, oil, etc. In a swimming pool water purification method in which water is filtered and sterilized and returned to the pool, a gutter-like gutter is provided at the upper inner periphery of the pretreatment tank and downstream of the pretreatment filter; By overflowing water into the side gutter, floating matter that has not been removed by the pretreatment filter is discharged from the side gutter along with the water.

<<Example>> A pool water purification method according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows an embodiment according to the present invention. According to this embodiment, water overflowing from a predetermined level of a swimming pool 1 is introduced into a pretreatment tank 2, where oil, dirt, etc. After the water is removed, chlorine is added and clean water is replenished, and the water in the tank 2 is then pumped up by a pump 3 and returned to the pool 1 via a hair catcher 4 and a filter 5. ing.

The above-mentioned pre-treatment tank 2 will be explained with reference to FIG. 2. The upper end surface of the tank 2 is open, and the overflow water from the pool 1 is divided into four parts in the illustrated example, and the lower end of each division pipe 6 is divided into four parts. The water is supplied into the tank 2 from the tank 2. In the upper part of this tank 2, a rectifying plate 7 is provided with a large number of small holes at approximately equal intervals corresponding to each of the branch pipes 6.
Four filter units are housed in a wire mesh casing with the oil mat 8 as a filter placed one above the other, and are removably attached in close contact with each other.

A gutter-like side groove 9 is annularly provided in the inner peripheral part of the tank 2 downstream of the oil mat 8, and the bottom surface of this side groove 9 is connected to a drainage pipe 10.
penetrates the side wall of the tank 2 downstream from this and extends to the outside. The horizontal area of this gutter is provided so as to be a predetermined ratio (usually 30%) to the horizontal area of the tank. In addition, in the lower part of the tank 2, a clean water supply pipe 11, which penetrates the side wall of the tank 2, is provided.
A sterilizing/disinfectant injection pipe 12 and an air introduction pipe 13 are each installed separately. This sterilization
Hypochlorous acid-based sterilizing/disinfectant and air are supplied into the tank from the disinfectant injection pipe 12 and the air introduction pipe 13, and the air introduction pipe 13 is provided with many small holes through which the air becomes bubbles. It is starting to rise.

A trap partition plate 1 is also provided on one side of the tank 2, that is, on the left side of the filter unit in the illustrated example.
A circulating water outlet 16 is provided at the lower left end of the tank 2 partitioned by the partition plate 15, and this outlet 16 is connected to the hair catcher mentioned above via the pump 4. The trap partition plate 15 prevents turbulent water from being sucked into the pump 4. Further, a drain port 17 is provided at the lower end of the side wall of the tank 2, through which water and frogs accumulated in the lower layer of the tank 2 can be drained as necessary.

In the swimming pool water purification method using the pre-treatment tank 2 as described above, waste water overflowing from the pool 1 is supplied to the upper opening of the tank 2 from four locations through the diversion pipe 6. This water is dispersed by the rectifying plate 7, flows down through the small holes, and reaches the oil mat 8, where oil, dirt, etc. are removed from the water.

The water that has passed through the oil mat 8 is stored in the lower part of the tank 2, but a part of it directly enters the annular side groove 9 below the oil mat 8 and is discharged from there. During normal operation, the water level in the tank is set to a level that slightly exceeds the inner upper end of the annular side gutter 9, so that oil, dirt, etc. that float on the top surface of the water in the tank 2 without being filtered by the oil mat 8 are removed. It passes over the inner upper end of the side gutter 9, enters the side gutter 9, and is discharged from there. At this time, since many small air bubbles are supplied into the water in the tank through the air introduction pipe 13, the air bubbles float dirt and the like, making it easier for them to enter the side gutter. The amount of water discharged from this annular side gutter 9 is equal to the amount of circulating water.
By setting the discharge amount to 30%, an amount of fresh water corresponding to this discharge amount is supplied from the clean water supply pipe 11 into the tank 2.

Also, during normal operation, the water level in the tank can be adjusted to the gutter 9.
When the pool water circulation is stopped, such as late at night, a large amount of fresh water is supplied into the tank 2 from the clean water supply pipe 11, and the water level in the tank 2 is set to a level lower than the inner upper end of the tank. is raised to a greater extent than during normal operation, so that floating objects such as oil and dirt that have floated and accumulated on the water surface inside the tank 2 overflow into the annular gutter 9 all at once and are discharged to the outside through the drain pipe 10. It's okay.

Incidentally, as mentioned above, the floes and the like that have settled in the tank 2 are drained from the drain port 17 at the lower end of the tank 2, and the water in the tank 2 is purified in this way, and the purified water is sent to the pump 3. The circulating water exits the pretreatment tank 2 through the circulating water outlet 18, passes through the hair catcher 4 and the filter 5, and is returned to the swimming pool 1.

<<Effects>> As described above, according to the pool water purification method of the present invention, water discharged from a swimming pool is passed through the pretreatment filter at the top of the pretreatment tank to remove dirt, oil, etc. Since a gutter above the gutter is provided downstream of the pretreatment filter, it is possible to continuously float water that overflows from the pool and recycle and reuse a certain percentage of the water. The water in the tank overflows into the gutter, and the floating matter that was not removed by the pre-treatment filter is discharged from the gutter together with the water, so oil, dirt, etc. that have surfaced on the water surface in the pre-treatment tank are It becomes possible to discharge continuously and efficiently.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view showing the entire pool water purification apparatus and swimming pool for carrying out the method of the present invention, and FIG. 2 is a sectional view of a pretreatment tank in the purification apparatus. 1...Swimming pool, 2...Pretreatment tank, 8
...Oil mat, 9...Gutter.

Claims (1)

[Claims] 1. A swimming pool water purification method in which water discharged from a swimming pool is passed through a pretreatment filter of a pretreatment tank to remove dirt, oil, etc., and then the water is filtered and sterilized and returned to the pool, A gutter-like gutter is provided at the upper inner peripheral edge of the pretreatment tank and downstream of the pretreatment filter, and water in the tank is removed by the pretreatment filter by overflowing into the gutter. A method for purifying water in a swimming pool, characterized in that floating matter is discharged from the gutter along with the water.