JPH1015543A - Oil-and-fat component removing device for that containing water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely remove oils and fats in that containing water by a comparatively simple equipment by draining the oil-and-fat containing water flowed from an inflow section and then passing the water through a filter section filled with a powdery oil and fat absorbent to remove oils and fats. SOLUTION: Oil-and-fat containing water flowed in from an inflow pipe 3 is dispersed from a nozzle 3b on an inner end of the inflow pipe 3 toward a filtration equipment 4, and at the time before flowing the water into the filtration equipment 4, solid impurities are removed by a filter 11. The water flowed into the filtration equipment 4 is passed through a powdery oil and fat absorbent 41 and oils and fats absorbed therein and removed primarily. Primarily treated water thus prepared is guided close to the center by a flowing- down guide tilted frame 25 and flowed down into a filtration equipment 5, and during the process of passing through the absorbent 41, the remaining oils and fats are absorbed and removed. Then treated water is collected into a central section by a tilted section 7a of a bottom cover 7 and drained out of a drain pipe 7b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to oils and fats containing oils and fats which release oil after removal of oils and fats containing oils and fats such as wastewater containing oil and chemical wastewater discharged from factories. The present invention relates to a component removal processing device.

[0002]

2. Description of the Related Art Sewage containing fats and oils (water containing fats and oils) discharged from restaurants and factories directly into the sea or rivers may cause environmental destruction and pollution. When flowing into a river or the like, usually, the content of oil and fat in the oil and fat component-containing water is set to a reference value (for example, 30% in animal and vegetable oils).
ppm, 5 ppm for mineral oil).

As a device for removing a fat component, there are generally known a fat component removing device for separating and removing the fat component using the specific gravity difference between water and water, and a fat component removing device for separating by heating and removing. Have been.

[0004] Recently, a separation device utilizing a microbial decomposition effect is also known.

[0005]

However, in the above-mentioned conventional apparatus, the equipment becomes large-scale and a great deal of cost is required, or the processing time for separating and removing the fat and oil component-containing water is long, or In addition, there is a problem that the separation and removal of fats and oils are incomplete.

The present invention has been made in order to solve the above-mentioned problems, and it is possible to remove the fat component of water containing fat component with relatively simple equipment in a short time and reliably. It is a further object of the present invention to provide an apparatus for removing oil and fat components, which can effectively use the separated oil and fat components.

[0007]

According to a first aspect of the present invention, there is provided an apparatus for removing a fat component from water containing fat component and discharging the water, wherein the water containing fat component is removed. An inflow portion (for example, the inflow pipe 3), a discharge portion (for example, the nozzle 3b) for releasing the oil and fat component-containing water flowing from the inflow portion, and the oil and fat component-containing water discharged from the discharge portion. A filtration unit (filters 4 and 5) filled with a granular or powdery oil and fat component absorbing material (41) for inflowing and absorbing the oil and fat component, and discharging water from which the oil and fat component has been removed through the filtration unit And a discharge unit (for example, a discharge pipe 7b) for removing oil and fat component-containing water.

According to the first aspect of the present invention, the oil-containing water which has flowed in from the inflow portion is discharged from the discharge portion and discharged to the outside in a state where the oil-and-fat component has been removed by the filtration portion. The water content is released by the discharge part and only passes through the filtration part, so that the fat and oil component is absorbed by the fat and oil component absorbent, and with a relatively simple facility, the fat and oil component is reliably removed in a short time, and after the removal. Water can be discharged.

[0009] If necessary, a plurality of filtration units may be provided.
If a plurality of oil and fat components are provided, removal of the oil and fat components in the oil and fat component-containing water becomes more reliable.

When a plurality of filtration units are provided, they may not be provided in the vertical direction but may be provided in any direction such as being provided in a horizontal direction.

According to a second aspect of the present invention, in the oil / fat component removal treatment apparatus (1) of the first aspect,
The inflow portion is provided with a dispersing means (for example, a nozzle 3b) for dispersing and discharging the oil-and-fat component-containing water.

According to the second aspect of the present invention,
Since the oil and fat component-containing water is diffused and released to the filtration unit by the dispersing means provided in the inflow unit, the oil and fat component-containing water released to the filtration unit is dispersed by that amount, and The fat component in the fat component-containing water is more reliably removed by the fat component absorbent.

According to a third aspect of the present invention, in the oil / fat component removal treatment apparatus according to the second aspect, the dispersing means is constituted by a nozzle.

According to the third aspect of the present invention, since the dispersing means is constituted by the nozzle, the oil-containing water discharged from the dispersing means of the discharging section is surely diffused and discharged to the filtering section. Accordingly, the fat component in the fat component-containing water is more reliably removed by the fat component absorbent in the filtration unit.

According to a fourth aspect of the present invention, there is provided the oil / fat component removing treatment apparatus according to the first, second, or third aspect, wherein the fat / oil component absorbing material has a porous structure in which oil and water are removed by heat treatment. It is composed of sawdust-like wood having

According to the fourth aspect of the present invention,
The oil and fat component absorbent in the filtration section, which is made of sawdust-like wood having a porous structure from which oil and moisture have been removed by heat treatment, has high lipophilicity (oil absorbing property) and impermeability to water Therefore, the fat and oil component-absorbing material ensures that the fat and oil component in the fat and oil component-containing water is reliably removed and almost only the removed water component is discharged, which is compared with a conventional device utilizing a microbial decomposition action. The oil and fat component-containing water is reliably removed in a short period of time.

The heat treatment is performed in the state of a woody material having a porous structure formed in a sawdust shape.

[0018] Further, since the oil-absorbing material is composed only of woody material and does not contain chemicals or biological additives, the absorbent which has absorbed the oil-and-fat component after use can be used as a fuel for animal and vegetable oils. In the case of, organic matter and water can be mixed and effectively used as compost.

A fifth aspect of the present invention relates to the oil / fat component removal treatment apparatus according to any one of the first to fourth aspects,
The fat / oil component absorbent is housed in a container having a water-permeable portion, and is configured as a cartridge type that can be attached and detached in the filtration unit.

According to the fifth aspect of the present invention, especially when the absorption rate of the fat and oil component by the fat and oil component absorbent decreases due to use, the fat and oil component absorbent is stored in the fat and oil component absorbent. It can be easily and easily replaced with a new fat and oil component absorbent together with the used container.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an apparatus for removing oil and fat components according to the present invention will be described below with reference to FIGS.

FIGS. 1 and 2 are a front view and a vertical sectional side view, respectively, of an oil / fat component removal treatment apparatus to which the present invention is applied.

First, the structure of the oil / fat component removal treatment apparatus 1 for oil / fat-containing water will be described.

The oil / fat component removal treatment apparatus 1 has a hollow cylindrical main body 2 having an open top and bottom, and an inflow as an inflow section which is attached to the main body 2 and guides the oil / fat component-containing water into the main body 2 from outside. A pipe 3; first and second filters (filtration units) 4, 5 housed removably in the main body 2; an upper lid 6 attached to an upper end opening of the main body 1; A bottom cover 7 attached to the opening and a gantry 8 supporting the main body 2 are provided.

One side of the body 1 has two openings
1, 22 are provided, and detachable lids 21a, 22a are attached to the openings 21, 22, respectively. In addition, net shelves 23 and 24 on which the first and second filters 4 and 5 are placed are provided at partial positions in the main body 2 corresponding to the lower ends of the openings 21 and 22, respectively.
The lower end 22 is substantially flush with the lower end.

Between the inflow pipe 3 and the first filter 4 in the main body 2, solid impurities (for example, fine dust and the like) in the oil and fat component-containing water discharged from the inflow pipe 3 can be captured. The filter 11 is detachably disposed, and the upper
Immediately below 3 is attached a downflow guide inclined frame 25 for guiding the oil / fat component-containing water, from which the grease component is primarily removed by the first filter 4 and which flows down from the mesh of the net rack 23 toward the center, to flow down.

Each of the first and second filters 4, 5 has an opening at the upper end and a bottom at the bottom, and has handles 4a, 5a for pull-out operation attached to one side thereof. I have. Each of the filters 4 and 5 contains a particulate or powdery fat / oil component absorbing material 41. The fat and oil component absorbent 41 may be filled in a state where it is deposited as it does not overflow into the filters 4 and 5, or may be filled in a container having an open upper end and a lower mesh bottom. It may be accommodated in a state. In addition, any manner of storage may be used, such as storage in a bag-like container having an open upper end and a water-permeable bottom. Replacement is simple and easy if it is accommodated in a state filled in a container or a bag-like container. The fat / oil component absorbent 41 will be described later.

A flange 3a for connecting another pipe is attached to the outer end of the inflow pipe 3, and the oil-containing water is diffused and discharged to the first filter 4 at the inner end. A nozzle 3b as a dispersing means is detachably attached. The discharge angle (φ in FIG. 1) of the nozzle 3b can be freely changed.

The upper lid 6 has a handle 6a for attaching and detaching the upper lid 6, and a gas vent pipe 6b for letting the gas inside the main body 2 flow outside. The lids 21a and 22a have the lids 21a and 21a,
Handles 21b and 22b for attaching and detaching 2a are respectively attached.

The bottom cover 7 has an inclined portion 7a for collecting filtered water flowing down after the oil and fat component is secondarily removed by the second filter 5 toward the center, and allows the filtered water collected by the inclined portion 7a to flow outside. An outflow pipe 7b as a discharge section is attached.

The oil / fat component absorbing material 41 is formed in a granular or powdery form. However, in consideration of scattering and oil absorbability, it is desirable that the size is in the shape of sawdust.

As the fat / oil component absorbent, for example, a woody fat / oil component absorbent having a porous structure in which heat treatment is performed to remove oil and moisture (trade name: SEA SWEEP)
And U.S. Pat. No. 5,110,785 describes a manufacturing method thereof. The characteristics of the fat and oil component absorbent described in this publication are described below.

(1) Raw material Mainly soft wood, for example, made of pine or poplar as raw material, formed in the shape of sawdust-like particles or powder,
No chemicals or biological additives are used.

(2) The heat treatment removes oil and water to form a porous (cellulose) structure like a sparrow's honeycomb.

(3) 280 ° C to less than 380 ° C for the heat treatment;
Desirably, it is performed at about 300 ° C. to 360 ° C.

(4) Characteristics It has a lipophilic property that absorbs hydrocarbons such as oils and chemicals three to four times its own weight into the cells of cellulose and a hydrophobic property that does not allow water to pass through. Absorbs hydrocarbons within minutes. After absorbing oil, it can be used as fuel or fertilizer.

As a characteristic based on the results of other experiments, the amount of oil absorbed per minute by the present fat and oil component absorbent having the size of a sawdust is, for example, 1.6 liters of fuel oil residue and heavy oil 1.5 liters, 1.1 liters for gasoline, 1 liter for light crude oil, 1 liter for medium crude oil,
Absorb 0.9 liters each with vegetable oil. In addition, 1-1.
7 liters, absorb 0.5 to 0.9 liters with linseed oil, ethylene glycol, propylene glycol, hexane, acetone, isobutyl alcohol, ethylene acetone, ethanol, toluene, benzene, isopropyl alcohol, chlorobenzene, methanol, XYLENE, etc.

Next, the process of removing the fat component in the fat component-containing water by the fat component removing treatment apparatus according to the present invention configured as described above will be described step by step.

First, the oil / fat component-containing water that has flowed in through the inflow pipe 3 is supplied to the nozzle 3 b serving as a discharge section at the inner end of the inflow pipe 3.
It is further diffused into the first filtration unit 4.

At this time, the emission angle (φ) radiated is
The diffusion and discharge angle (φ) can be changed according to the flow rate, flow rate, nozzle diameter, diffusion discharge distance (L), and the like of the oil- and fat-containing water. The divergence angle is not particularly limited, but is preferably about 75 °.

Before the discharged oil-and-fat-containing water flows into the first filter 4, solid impurities (for example, fine trash) are removed by the filter 11.

Subsequently, the oil / fat-containing water flowing into the first filter 4 is removed by the oil / fat component absorbing material 4 in the first filter 4.
While passing through 1, the fat and oil component is absorbed by the fat and oil component absorbent 41 and is primarily removed.

The primary treated water that has passed through the first filter 4 and has been subjected to the oil / fat component removal treatment is supplied to the immediately downstream falling guide inclined frame 25.
In the process of being guided toward the center and flowing into the second filter 5 and passing through the fat and oil component absorbent 41 in the second filter 5, the fat and oil component absorbent in the first filter 4 The fat component that could not be removed in 41 is absorbed and removed.

The oil and fat component absorbing material 4 in the second filter 5
1, the treated water after the oil and fat components have been removed is collected at the center by the inclined portion 7a of the bottom cover 7, and is discharged to the discharge pipe 7
b to the outside.

During the above operation, the first filter 4 or the second filter
When the fat and oil component absorbent 41 in the filter 5 of the above has become saturated with the absorption of fat and oil, the lid 21a or 22a is opened, the first filter 4 or the second filter 5 is pulled out, and the first filter 5 is pulled out.
Oil component absorbing material 4 in the filter 4 or the second filter 5
After replacing the first filter 4 with a new one, the first filter 4 or the second filter 5 is returned to the original position in the main body 2 again, and then the lid 2
Close 1a or 22a.

The oil / fat component absorbing material 41 that has become saturated is
As described above, since it does not contain any chemicals or biological additives, it can be used as a fuel as it is if no harmful substance is contained in the oil and fat component-containing component to be filtered. Also,
When vegetable oil or the like is absorbed, organic matter and water can be mixed and used as compost.

Since the oil / fat removal processing apparatus according to the embodiment of the present invention is configured as described above, it is relatively simple equipment and can be used in a short time and surely with the oil / fat component-containing water as compared with the conventional apparatus. Oil and fat can be removed.

The fat / oil absorbent 41 is not limited to the cited absorbent (trade name: SEA SWEEP), but may be any substance that can efficiently absorb fat / oil components. .

Further, the filter of the oil and fat component removing treatment apparatus according to the embodiment of the present invention is arranged in two stages, but it is needless to say that one stage or three or more stages may be provided.

Further, the filters of the oil and fat component removal treatment device are not necessarily arranged vertically, but may be arranged on the same plane.

The dispersing means is not limited to a nozzle, but may be any type of means capable of uniformly dispersing the oil-and-fat-containing water flowing from the inflow pipe into the oil-and-fat absorbing material in the first filter. May be used.

The material of the main body, lid, filter, net rack, etc. of the oil and fat component removing apparatus according to the present invention is not particularly limited,
SUS304 or the like having excellent corrosion resistance may be used.

[0053]

According to the first aspect of the present invention, the water containing the fat and oil component flowing from the inflow portion is discharged from the discharge portion and discharged to the outside with the fat and oil component removed by the filtration portion. The component-containing water is released by the discharge section and only passes through the filtration section, so that the fat component is absorbed by the fat component absorbing material. With a relatively simple facility, the fat component is reliably removed in a short time and removed. Later water can be drained.

According to the second aspect of the present invention, in particular, since the oil-containing water is diffused and discharged to the filtration unit by the dispersing means provided in the inflow unit, the fat and oil component discharged to the filtration unit accordingly. Since the water content is dispersed, the fat component in the fat component water is more reliably removed by the fat component absorbent in the filtration unit.

According to the third aspect of the present invention, since the dissipating means is constituted by the nozzle, it is possible to surely disperse the oil and fat component-containing water discharged from the dispersing means of the discharging section and discharge the water into the filtering section. Accordingly, the fat component in the fat component-containing water is more reliably removed by the fat component absorbent in the filtration unit.

According to the fourth aspect of the present invention, the oil and fat component absorbing material in the filtering section made of a saw-like wood having a porous structure which has been heat-treated to remove oil and moisture is particularly high. Because of the lipophilicity (the property of absorbing oil) and the property of impervious to water, the fat and oil component absorbing material reliably removes the fat and oil component in the fat and oil component-containing water, and almost only the removed water component is discharged. As a result, the removal of the fat component in the fat component-containing water can be carried out in a shorter time and more reliably than in a conventional device utilizing the microbial decomposition action.

According to the invention described in claim 5, in particular,
If the absorption rate of the fat and oil component by the fat and oil component absorbent decreases due to use, the fat and oil component absorbent is easily and easily replaced with a new fat and oil component absorbent together with the container in which the fat and oil component absorbent is stored. can do.

[Brief description of the drawings]

FIG. 1 is a front view of an oil / fat component removal treatment apparatus to which the present invention is applied.

FIG. 2 is a vertical sectional side view of an oil / fat component removal treatment apparatus to which the present invention is applied.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 fat and oil component removal treatment device 2 main body 4 first filter (filtration unit) 5 second filter (filtration unit) 3 inflow pipe (inflow section) 7b discharge pipe (discharge section) 3b nozzle (dissipating means) 41 fat and oil Minute absorber

Claims (5)

[Claims] 1. An apparatus for removing oils and fats in oil- and fats-containing water and discharging the water, comprising: an inflow section through which the oils and fats-containing water flows; and an inflow section that releases the oils and fats-containing water flowing from the inflow section. A filtration unit filled with a particulate or powdery fat and oil component absorbing material into which the fat and oil component-containing water released from the discharge unit flows and absorbs the fat and oil component, and a fat and oil through the filtration unit An oil / fat component removal treatment apparatus, comprising: a discharge unit for discharging water from which the components have been removed. 2. The apparatus according to claim 1, wherein the inflow section includes a dispersing means for dispersing and discharging the oil-containing water. 3. An apparatus according to claim 2, wherein said dissipating means is constituted by a nozzle. 4. The fat and oil component-containing material according to claim 1, wherein the fat and oil component absorbent is a sawdust-like wood having a porous structure from which oil and moisture have been removed by heat treatment. Equipment for removing oil and fat components from water. 5. The cartridge according to claim 1, wherein said fat / oil component absorbing material is housed in a container having a water-permeable portion, and is configured as a cartridge type which can be detachably exchanged in said filtering portion. The oil / fat component removal treatment apparatus according to any one of the oil / fat component-containing waters.