JPH0647207A - Waste water treatment device - Google Patents

Abstract

PURPOSE:To provide a device in which the generation of wear or clogging of equipments caused by a granular solid matter in a waste water to be treated is reduced and periodic cleaning of various treating vessels is eliminated and is easy in maintenance. CONSTITUTION:The granular solid matter in the waste water to be treated is separated by water flow generated by a vortex generation device 1 in a granular solid matter separation tank 2 and is scraped up to a recovering hole 11 and is allowed to fall into a granular solid matter storage tank 3. As a result, since the granular solid matter is easily separated and stored, the device does not necessitate laborious maintenance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wastewater treatment device for separating sand or the like.

[0002]

2. Description of the Related Art Sand separation in a conventional wastewater treatment equipment is carried out by using a gravity method using a sand settling tank, a mechanical centrifugal separation method using a device such as a centrifuge, and a liquid cyclone. There was a method of separating by centrifugal force.

A method using the above gravity will be described below with reference to FIG.

In FIG. 3, 11 is a sand settling tank, 12 is a receiving tank for receiving the overflow liquid from the sand settling tank 11, and 13 is a receiving tank 12
A vacuum pump for deodorizing the water and for vacuuming the sand settling tank 14,
Reference numeral 15 is a sand outlet, and 16 and 17 are flexible hoses.

The sediments settled in the settling tank 11 are sucked up by the vacuum pump 13 into the settling tank 14 via the flexible hose 16. The sucked earth and sand are washed with the washing water 8, and the washing treatment water 9 is sent to the receiving tank 12 via the flexible hose 17. The washed soil is taken out by opening the lid of the sand outlet 15.

[0006]

In the conventional wastewater treatment, sand and the like mixed in the liquid are worn by various pumps and equipment,
Sand, etc. that causes clogging and accumulates at the bottom of various treated water tanks requires periodic cleaning of the water tanks due to stoppage of operation, which requires a great deal of labor to maintain the equipment.

In order to solve the above-mentioned problems, the present invention proposes a new wastewater treatment apparatus utilizing the effect of gravity, centrifugal force, and the scraping effect by the water flow for removing the sand and the like mixed in when the treated water is received. is there.

[0008]

The wastewater treatment apparatus of the present invention is provided in a granular solids separation tank in which wastewater to be treated is introduced and a recovery hole for granular solids is provided in the center of the bottom, and the separation tank. And a granular solids storage tank provided below the granular solids separation tank.

[0009]

In the above description, the waste water to be treated put into the granular solids separation tank is subjected to centrifugal separation of the vortex-like water flow generated in the separation tank by the vortex generator to produce the granular solids contained in the waste water to be treated. Are separated and settle at the bottom of the separation tank by the settling action due to gravity.

The granular solid matter that has settled at the bottom of the separation tank is further attracted by the water flow, is attracted to the central portion of the bottom portion, and falls into the granular solid matter storage tank through the recovery hole. It is stored in the same storage tank.

As described above, the granular solid matter contained in the waste water to be treated is separated in the granular solid matter separation tank by the water flow generated by the vortex generator, and then scraped into the recovery hole to obtain the granular solid matter. Since the solid particles fall into the storage tank, the solid particles are easily separated and stored, and a device that does not require a lot of maintenance work is realized.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention is shown in FIGS. 1 (a) and 1 (b). In the present embodiment shown in FIGS. 1A and 1B, a sand separation tank 2 and a sand separation tank 2 in which a stirrer 1 is provided at an upper portion and a sand recovery hole 11 is provided at a central portion of a bottom and urine is input, A sand storage tank 3 provided on the lower side and provided with a sand removal port 12 at the lower part, and a separation liquid from the separation tank 2 which is provided together with the sand separation tank 2 and is connected to a residue removal device 6 via a pump 5. The receiving tank 4 is provided.

In the above, when human waste, which is the waste water to be treated, is put into the sand separation tank 2, sand, which is a granular solid contained in human waste, is generated by the water flow generated by the agitator 1 which is a vortex generator. It is centrifuged and settled by gravity, and deposited on the bottom of the sand separation tank 2.

On the other hand, the separated liquid from which the sands have been separated overflows into the receiving tank 4.

The sand accumulated on the bottom of the sand separation tank 2 is scraped to the center of the bottom by the vortex in the sand separation tank 2 generated by the stirrer 1 and drops from the sand recovery hole 11 into the sand storage tank 3. To do.

When the sand is fully filled in the sand storage tank 3, the slide lid 10 is closed and the washing water 8 is sprayed into the sand storage tank 3 to wash the sand. The washed sand is
It is recovered from the sand extraction port 12. Further, the used cleaning water 9 is discharged to the receiving tank 4.

According to the above, the sands in the human waste put in the sand separation tank are separated by the stirring of the stirrer, the centrifugal separation by the vortex water flow, and the sedimentation by gravity, so that the sands are treated as water. It separates easily and settles at the bottom of the sand separation tank. Since the precipitated sands are attracted by the water flow, they fall into the sand storage tank through the sand recovery holes at the bottom, and the sands are easily recovered.

The second embodiment of the present invention is shown in FIGS. 2 (a) and 2 (b).
Shown in. In this embodiment shown in FIGS. 2A and 2B, a receiving tank 4 is provided on the upstream side of the sand separating tank 2, a pump 5 is connected between the receiving tank 4 and the receiving tank 4, and In the first embodiment, the agitator 1 in the first embodiment is not provided, the pump 5 acts as a vortex generator, and the discharge force of the pump 5 generates a water flow in the sand separation tank 2. And the action and effect of the water flow are the same as in the first embodiment.

[0019]

According to the wastewater treatment apparatus of the present invention, the granular solid matter contained in the wastewater to be treated is separated in the granular solid matter separation tank by the water flow generated by the vortex generator, and then scraped into the recovery hole. Since the granular solid matter is easily separated and stored by dropping into the granular solid matter storage tank, an apparatus that does not require much labor for maintenance is realized.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a first embodiment of the present invention, (a) is a layout diagram, and (b) is a flow diagram.

FIG. 2 is an explanatory diagram of a second embodiment of the present invention, (a) is a layout diagram, and (b) is a flow diagram.

FIG. 3 is an explanatory diagram of a conventional device.

[Explanation of symbols]

 1 Stirrer 2 Sand Separation Tank 3 Sand Storage Tank 4 Receiving Tank 5 Pump 6 Removing Machine 11 Sand Recovery Hole

Claims (1)

[Claims] 1. A granular solids separation tank, into which waste water to be treated is introduced, and a recovery hole for granular solids is provided in the center of the bottom.
A wastewater treatment device comprising a vortex generator provided in the separation tank and a granular solids storage tank provided below the granular solids separation tank.