JPH04187281A - Garbage treating device - Google Patents

Abstract

PURPOSE:To diminish the size of a pressurizing tank having the draft tube of a pressurized water producing device and to miniaturize the treating device by supplying air to this pressurizing tank from right below the draft tube. CONSTITUTION:The water which is made by the pressurized water producing device 3 and is dissolved with the air is bubbled by a reduced pressure and is admitted into the water tank 2 into which the garbage crushed by a disposer 1 flows. The garbage is oxidized and decomposed by microorganisms and is reduced in weight. The air rises in the draft tube 11 by including the water therein in the pressurizing tank 10 of the pressurized water producing device 3. In addition, the air accelerates the convectional motion of the water in the pressurizing tank 10 and speeds up the gas exchange on the water surface and, therefore, the stagnation time of the water in the pressurizing tank 10 is shortened. The size of the pressurizing tank 10 is diminished in this way and the size over the entire part of the device is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a general household kitchen waste processing device, and more particularly to a processing device for kitchen waste crushed by a disposer.

Conventional technology The pressurized float method is an industrially widely used solid-liquid separation method.

This method creates pressurized water by dissolving air in water under pressure, and by reducing the pressure of the pressurized water, the microbubbles generated are attached to suspended solids in the water, and the suspended solids are floated to the water surface of the water tank and separated. This method has the function of solid-liquid separation as well as supplying oxygen into water, and is advantageous for biological oxidation treatment of organic waste or wastewater, so it can be used as a post-treatment for kitchen waste in household disposers to separate shredded kitchen waste. Attempts have been made to apply this method to kitchen waste processing equipment for the purpose of reducing the amount of waste through biooxidation and purifying the water after separating crushed kitchen waste through biological oxidation.

Problems to be Solved by the Invention In such kitchen waste processing equipment, the dissolution of air into water during the process of producing pressurized water is slow, and as a result, the pressurized tank that receives and pressurizes air and water has to be large. There was a problem in that the entire device became large and unsuitable for home use.

The present invention solves the above-mentioned problems, and aims to downsize a kitchen waste processing device by reducing the pressure drop.

Means for Solving the Problems In order to achieve the above object, the present invention provides a pressurized water production device including a pressurized tank having a traft tube inside, a water supply pump and water supply piping that supply water to the pressurized tank, It is composed of an air pump and air piping that supply air into the pressurized tank from directly below the draft tube, and a pressurized water piping that sends water from the pressurized tank via a pressure reducing valve.

Effects According to the present invention, the number of times air and water come into contact with each other is increased due to the above-described configuration, and the dissolution rate of air into water can therefore be increased, so that the pressurized water tank can be downsized.

EXAMPLES Hereinafter, examples of the present invention will be described with reference to FIGS. 1 and 2.

In FIG. 1, kitchen waste crushed by a disposer 1 flows into a water tank 2. Water produced by a pressurized water production device 3 and containing dissolved air foams and flows into the water tank 2 under reduced pressure. Microbubbles due to foaming adhere to the crushed kitchen waste, and the buoyant kitchen waste is separated into a floating scum layer 5. Here, the kitchen waste is oxidized and decomposed by microorganisms to reduce its weight. During this process, the microorganisms consume large amounts of oxygen, which is supplied in particular by air bubbles. The water from which the crushed kitchen waste has been removed flows into the water treatment bag W6. Microorganisms attached to the fixed bed 7 of the water treatment device 6 decompose organic contaminants dissolved in the water. The purified water is then discharged from the water pipe 9. The oxygen consumed by microorganisms in this process is supplied by water in which air has been dissolved to a saturation concentration even after foaming. Further, some of the water returns to the pressurized water production device 3 through the water pipe 8 and becomes a raw material for pressurized water. Air, which is a raw material for pressurized water, is supplied from an air pipe (not shown).

In this way, water tank 2. Water treatment equipment6. The pressurized water production device 3 is connected to a loop, and crushed kitchen waste flows from the disposer 1 into the water tank 2.

FIG. 2 shows the pressurized water production device 3, and the pressurized tank 10 is filled with water that is a raw material for pressurized water through the water supply pipe 15 shown in FIG.
．． It is supplied by a water pump 14.

Air, which is a raw material for pressurized water, is supplied from the atmosphere through an air pipe 13 and an air pump 12. Pressure for producing pressurized water is applied by the water supply pump 14 and the air pump 12. Pressurized water obtained by gas-liquid contact inside the pressurized tank 10 is depressurized by the pressure reducing valve 16 and foams, and flows into the water tank 2 through the pressurized water pipe 17.

The draft tube 11 faces directly above the air pipe 13, and the air pipe 13 is connected to the bottom surface of the pressurized tank 10 and is open. Due to this draft tube 11, air entrains water and rises inside the draft tube 11,
Since convective movement of water in the pressurized tank 10 is promoted and gas exchange on the water surface is accelerated, the residence time of water in the pressurized tank 10 can be shortened. Thereby, the pressurized water tank can be downsized.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, the configuration described in the claims increases the number of times air and water come into contact in the pressurized tank, and therefore the air Since the rate of dissolution in water becomes faster, the pressurized tank can be made smaller, and a kitchen waste processing apparatus with a smaller overall size can be provided.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of a kitchen waste processing apparatus according to an embodiment of the present invention, and FIG. 2 is a configuration diagram of a pressurized water production device of the same kitchen waste processing apparatus. 1... Disposer, 2... Water tank, 3... Pressurized water production device, 6... Water treatment device, 10... Pressurized Tank, 11...
・Draft tube, 12...Air pump, 1
3... Air piping, 14... Water supply pump, 15... Water supply piping, 16... Pressure reducing valve, 17... Pressurized water piping.

Claims (1)

[Claims] A water tank for oxidizing and decomposing kitchen waste crushed by a disposer, a water treatment device for treating water after the kitchen waste has been removed, and a pressurized water production device for sending pressurized water to the water tank are connected in a loop to produce the pressurized water. The device includes a pressurized tank having a draft tube inside, a water pump and water supply piping that supply water to the pressurized tank, and an air pump and air piping that supplies air into the pressurized tank from directly below the draft tube. and a pressurized water pipe that sends water from the pressurized tank via a pressure reducing valve.