JPH11221593A - Device for purifying waste water or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently dissipate and exclude oils and fats contained in the waste water discharged from a restaurant, etc. SOLUTION: An inlet 2 and an outlet 3 are provided to a treating tank 1, an air discharge pipe 10 is furnished at the lower part in the tank 1, and a current generating piece 17 is arranged at the upper part. A net box 15 contg. many chips 16 on which a microorganism is adsorbed is set above the pipe 10. The water having washed tableware, etc., flows into the treating tank 1 from the inlet 2. The air discharged from the pipe 10 agitates water, ascends and hits against the current generating piece 17. The current is turned to a different direction due to the current generating piece 17 and flows in a fixed direction, and a water current is also generated. Since the microorganisms in the chips 16 are brought into constant contact with the oils and fats, the oils and fats are continuously decomposed and dissipated by the microorganisms.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for purifying waste water and the like for purifying waste water discharged from restaurants and the like and sewage discharged from factories and the like.

[0002]

2. Description of the Related Art FIGS. 1 and 2 are a plan view and a longitudinal sectional view, respectively, showing an embodiment of the present invention. The prior art will be described with reference to FIGS. In restaurants and cafeterias, it is forbidden to flush and discard the water from washing dishes and the like. For example, oils and fats are discarded after being separated by a drainage purification device as shown in FIGS. This device is as follows. FIG.
In 2, 1 indicates a rectangular processing tank having only the upper part opened. An inflow port 2 is provided above one end of the processing tank 1, and an outflow port 3 is provided above the other end. The outlet 3 is slightly lower than the inlet 2. In the processing tank 1, two first dams 4 and a second dam 5 are spaced apart from each other.
, But gaps are provided between the lower ends of the first and second weir plates 4 and 5 and the lower surface in the processing tank 1. The first inlet 6 is closer to the inlet 2 than the first dam 4, the second tank 7 is between the first dam 4 and the second dam 5, and the third outlet 8 is closer to the outlet 3 from the second dam 5. Become. The above is a conventional apparatus.

[0003] Water for washing dishes and the like is supplied from an inlet 2 to a first tank 6.
It flows into the inside. The water flows from below the first dam 4
It flows into the tank 7. In addition, the third
It flows into the tank 8 and flows out from the outlet 3. During such a flow, the fats and oils lighter than the water contained in the water first float upward in the first tank 6 and hardly flow into the second tank 7. Nevertheless, although they slightly flow, they float upward in the second tank 7 and accumulate. The amount of oils and fats flowing into the third tank 8 further decreases, but the oils and fats flowing in still accumulate in the third tank 8 upward. Since the outlet 3 is below the liquid level, the oil and the like floating above hardly flows out from the outlet 3. First
Oils and the like that accumulate in the upper part of the tank 6, the second tank 7, and the third tank 8
Remove by occasionally scooping.

[0004]

In the above-mentioned conventional apparatus, fats and oils are removed by floating and removing fats and oils by focusing on the difference in specific gravity. However, this method is not sufficient, and at present, fine oils and fats are flowing without being separated from water. The problem to be solved by the present invention is to provide a device for purifying waste water and the like which can sufficiently eliminate and eliminate oils and fats contained in the waste water and the like.

[0005]

According to the first, second and third aspects of the present invention, the rising air bubbles from the lower air discharge port hit the inclined surface of the lower surface of the wake piece in a predetermined direction. Liquid flow occurs. As the air is constantly blown and agitated, and while being agitated by the liquid flow, the drainage and the like are purified. According to the second aspect of the present invention, since the circulating liquid flow occurs, the agitation proceeds effectively, and the effective purification is performed. According to the third aspect of the present invention, the net box 15 is raised by rising bubbles or liquid flow.
While the inside chips 16 and the like and the wastewater and the like are stirred, the fats and oils in the wastewater and the like are decomposed and disappear by microorganisms in the chips 16 and the like.

[0006] According to the fourth, fifth and sixth aspects,
While the treatment liquid is sprayed from the upper nozzle 18 and is stirred with the waste water and the like by the rising bubbles from the lower air discharge port 13, the waste water and the like are subjected to a purification treatment. According to the fifth aspect, the supply of the processing liquid and the stirring of the bubbles can be automatically performed by automatically and alternately switching the electromagnetic valves A and B. According to the sixth aspect of the present invention, not only can the supply of the processing liquid and the stirring of the bubbles be performed automatically and alternately, but also when the electromagnetic valve B is closed and the electromagnetic valve A is opened, the air from the blower 12 or the like is supplied to the tank 19. The processing liquid can be supplied to the processing tank 1 by pushing the processing liquid into the upper part of the inside.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The waste water purifying apparatus according to the first aspect of the present invention is provided with an inlet 2 and an outlet 3 for drainage and the like, and a treatment tank 1 in which drainage and the like can be retained. And an air discharge port 13 for discharging air is provided below the processing tank 1, and the lower surface has an inclined surface on which a rising air bubble from the lower air discharge port 13 hits and causes a liquid flow in a predetermined direction. The piece 17 is arranged above the air discharge port 13.
According to a second aspect, in the first aspect, a plurality of the starting pieces 17 are arranged so as to generate a circulating liquid flow in the processing tank 1. According to a third aspect, in the first and second aspects, a net box 15 is disposed between the air discharge port 13 and the wake piece 17, and countless microorganisms that dissolve and eliminate fats and oils are cultivated therein. The chip 16 and the like are housed in the net box 15.

According to a fourth aspect, there is provided an inflow port 2 for drainage or the like.
A treatment tank 1 in which drainage and the like can be retained therein, and an air discharge port 13 for releasing air is provided below the treatment tank 1 to provide a blower 12 and the like. The discharge port 13 is connected with a pipe 11 or the like, and a nozzle 18 is provided above the processing tank 1 and a tank 19 containing a processing liquid and the nozzle 18 are connected with a pipe or the like. Claim 5 relates to claim 4,
Pipe 1 connecting blower 12 etc. and air outlet 13
Attach the electromagnetic valve B to the tank 19 and the nozzle 1
An electromagnetic valve A is attached to a pipe or the like connecting the electromagnetic valve 8 and the electromagnetic valve A and the electromagnetic valve B are alternately opened and closed. According to a sixth aspect, in the fifth aspect, the tank 19 is a sealed tank,
Between the blower 12 and the electromagnetic valve B in the pipe 11 and the like connecting the air discharge port 13 to the tank 1
9 is communicated with the upper part by a pipe or the like.

In the above arrangement, the air discharge port 13 may be provided by arranging a pipe below the processing tank 1 and making a hole in the pipe. A plate or the like may be provided below the processing tank 1, and a hole may be formed in the plate or the like to provide the air discharge port 13. And these air discharge ports 13
Air is blown by a blower 12 or a compressor. According to the first, second and third aspects, the wake piece 17 is provided.
It is sufficient that the inclined surface on the lower surface is formed during operation. The wake piece 17 having the inclined surface may be fixed and attached, or one end may be attached and the other end left free, and the inclined surface may be formed by lifting the other side by bubbles from below during operation. You may do so. In the case of the third aspect, the wood chips 16 may be replaced with porous ones such as carbonized coffee grounds, sawdust, activated carbon, charcoal, foamed urethane chips, and porous chips. In the fourth, fifth and sixth aspects, the tank 19 is generally provided at a position above the processing tank 1.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment will be described with reference to FIGS.
This embodiment has all the above-described configurations described as a conventional device. Further, a basket 9 is arranged at an upper portion in the first tank 6. First tank 6 / second tank 7
A pipe 10 in a rectangular shape is arranged on the lower surface of the third tank 8, and the pipe 10 is connected to a blower 12 arranged outside via a pipe 11. An electromagnetic valve B is mounted in the middle of the pipe 11. In the upper part of the pipe 10, a plurality of air discharge ports 13 are provided at predetermined intervals. Three cubic net boxes 15 with legs 14 provided on the bottom are prepared and arranged on the pipes 10 in the first tank 6, the second tank 7, and the third tank 8, respectively. A large number of chips 16 made of wood pieces are put in the net box 15. The chip 16 is extremely porous, and has a myriad of microorganisms that can eliminate fats and oils cultivated therein. Then, the net boxes 15 in the second tank 7 and the third tank 8 are located above the air discharge ports 13 of the pipe 10.
The wake pieces 17 are respectively mounted on the top. Wake piece 17
Has a shape in which a rectangular plate is curved like an arc, as clearly shown in FIGS. Each of the wake pieces 17 is attached to the net box 15 only at one end and is free at the other end.
In the third tank 8, the rear side of each of the wake pieces 17 is attached in a counterclockwise direction.

A nozzle 18 is provided above the center of each of the second tank 7 and the third tank 8 so as to extend downward. Processing tank 1
A tank 19 that can be hermetically sealed is provided above the
A processing liquid containing a microorganism that can eliminate fats and oils is contained therein. The tank 19 and each nozzle 18 are connected by a pipe or the like, and an electromagnetic valve A is attached in the middle of the pipe or the like. Further, the blower 12 is moved from the electromagnetic valve B of the pipe 11.
A lower end of a pipe or the like is attached to a closer position, and an upper end of the pipe or the like is attached above the inside of the tank 19. The blower 12 is constantly driven, and the electromagnetic valves A and B are alternately opened. That is, the electromagnetic valve B is opened for a certain long time, the electromagnetic valve A is closed during that time, and the electromagnetic valve A is opened at the same time as the electromagnetic valve B is closed. When a short period of time elapses, the electromagnetic valve A
Is closed and the electromagnetic valve B is opened.

Water after washing dishes and the like flows into the first tank 6 from the inflow port 2. After the oil or the like that is lighter than water floats above and solids are captured in the basket 9, the water flows into the second tank 7 from below the first dam 4. In the second tank 7, oils and fats float in the same manner, and water flows into the third tank 8 from below the second dam 5. While the electromagnetic valve B is open, the air from the blower 12 passes through the pipe 11 and discharges the air upward from many air discharge ports 13 of the pipe 10. The released air rises while stirring the water, and hits each of the upwardly-moving pieces 17. Since each of the wake pieces 17 is attached to the net box 15 only at one end and is free at the other end, the free side is slightly lifted by bubbles rising from below. For this reason, the air bubbles that have hit each of the wakeup pieces 17 change their direction in the direction in which each of the wakeup pieces 17 rise, and flow counterclockwise. (Fig. 3
4)

In the second tank 7 and the third tank 8, counterclockwise water flows are generated, and the inside of the tank is kept stirred. During the stirring, the microorganisms in many chips 16 come into constant contact with the fats and oils, so that the microorganisms continue to decompose and eliminate the fats and oils. After a certain period of time, the solenoid valve B closes and the solenoid valve A opens at the same time. The air from the blower 12 flows into the upper part of the tank 19 and presses the processing liquid in the tank 19. The pushed processing liquid is sprayed from the nozzle 18 to the upper part of the second tank 7 and the third tank 8 through the electromagnetic valve A. Then, after a short period of time, the electromagnetic valve A closes and the electromagnetic valve B opens, so that the air from the blower 12 is discharged from the air discharge port 13. While repeating such a cycle, fats and oils disappear. In the above,
The electromagnetic valve B may be a direction switching valve, and the electromagnetic valve B may be connected to the upper part in the tank 19 as shown by a two-dot chain line in FIG. Alternatively, a blower different from the blower 12 may be provided, and the blower may be used to supply air to the upper part of the tank 19.

[0014]

According to the apparatus for purifying waste water and the like according to the present invention, fats and oils in the waste water and the like can be sufficiently eliminated and eliminated, and the final waste water and the like are harmless. Also,
Water flow is generated by using rising bubbles, and no special device for generating water flow is used. For this reason, the apparatus can be simplified and the cost can be kept low.

[Brief description of the drawings]

FIG. 1 is a plan view showing one embodiment.

FIG. 2 is a longitudinal sectional view of that of FIG.

FIG. 3 is a partially omitted sectional view showing a main part of the embodiment.

FIG. 4 is a partially omitted cross-sectional view of FIG. 3 viewed from a right angle direction.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Processing tank 2 Inflow port 3 Outflow port 12 Blower 13 Air discharge port 15 Net box 16 Chip 17 Starting piece
18 Nozzle 19 Tank A Solenoid valve B Solenoid valve

Claims (6)

[Claims] An inflow port (2) and an outflow port (3) for drainage and the like are provided with a treatment tank (1) in which drainage and the like can be retained therein, and an air discharger for releasing air is provided. An outlet (13) is provided below in the processing tank (1), and a rising piece having an inclined surface on its lower surface, on the lower surface of which an upward bubble from the lower air discharge port (13) hits and causes a liquid flow in a predetermined direction. 17) A device for purifying waste water or the like, wherein the device is disposed above the air discharge port (13). 2. Purification of waste water or the like according to claim 1, wherein the wake pieces (17) are a plurality of pieces arranged so as to generate a circulating liquid flow in the treatment tank (1). apparatus. 3. A countless chip (16) in which a net box (15) is arranged between an air discharge port (13) and a wake piece (17), and microorganisms for dissolving and eliminating fats and oils are cultivated therein.
The apparatus for purifying drainage or the like according to claim 1 or 2, wherein the apparatus is housed in a net box (15). 4. A treatment tank (1) which has an inflow port (2) and an outflow port (3) for drainage and the like, in which drainage and the like can be retained, and an air discharger for discharging air. An outlet (13) is provided below the processing tank (1) to provide a blower (1).
2) and the like and the air discharge port (13) are connected by a pipe (11) or the like, and a nozzle (18) is provided above the processing tank (1) to form a tank (19) containing a processing liquid and a nozzle (18). ) Is connected by a pipe etc. 5. An air outlet (1) and a blower (12).
3) solenoid valve (B) on pipe (11) etc.
The electromagnetic valve (A) is attached to a pipe or the like connecting the tank (19) and the nozzle (18), and the electromagnetic valve (A) and the electromagnetic valve (B) are alternately opened and closed. The wastewater purifying apparatus according to claim 4, wherein 6. The tank (19) is a closed tank, and is provided between a blower (12) and the like and a solenoid valve (B) in a pipe (11) and the like connecting the blower (12) and the air discharge port (13). The apparatus for purifying drainage or the like according to claim 5, characterized in that the part (2) and the upper part in the tank (19) are communicated by a pipe or the like.