JPH09201587A - Solid and oil component flocculation and separation apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solid and oil component flocculation and separation apparatus capable of efficiently flocculate and separate fine solid particles or fine oil droplets from a liquid to be treated without using a chemical agent and capable of being constituted as relatively small-sized equipment. SOLUTION: A solid and oil component flocculation and separation apparatus has a treatment tank 1 into which a liquid to be treated is introduced, a plurality of far infrared generators 8 arranged in a treated liquid so as to leave an interval and a heating device 6 heating the liquid to be treated and air is generated from an air discharge device. Solid particles are flocculated and separated from the liquid to be treated by weak electric energy generated when the liquid to be treated is stirred, far infrared rays generated by bio-ceramic as the far infrared generators and fine granular shell fossil becoming nuclei of flocculated lumps.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid and oil aggregating and separating apparatus for aggregating and separating fine solid particles and fine oil particles contained in industrial waste liquid.

[0002]

2. Description of the Related Art For example, very small solid particles are mixed in a cleaning waste liquid discharged from a cleaning step in coating industrial products. In order to separate solid particles from this type of waste liquid, conventionally, a coagulant such as aluminum sulfate or iron sulfate or a neutralizing agent is generally added to the waste liquid to coagulate / precipitate the particles in the liquid, and Separated from waste liquid.

[0003]

However, in the case of aggregating and separating solid particles by using a flocculant or a neutralizing agent, a large-scale facility such as a flocculant charging tank, a neutralizing agent charging tank, and a precipitation tank is required. It was necessary to install multiple tanks in the above, and there was a problem that the installation space and equipment were bulky.

In addition, when the coagulant is put into the waste liquid and subjected to the coagulation treatment, the coagulant itself may change into sludge in the tank. There was a problem that a much larger amount was generated and a more frequent removal process was required to remove the sludge.

Although a device for filtering solid particles and fine oil droplets from waste liquid by using a special filter is also used, the separation efficiency is poor and it is necessary to frequently replace the filter.

The present invention has been made in view of the above points, and it is possible to efficiently agglomerate and separate fine solid particles, fine oil droplets and the like from a liquid to be treated without using chemicals. An object of the present invention is to provide a solid and oil flocculation / separation device that can be configured as a relatively small facility.

[0007]

In order to achieve the above object, the apparatus for coagulating and separating solids and oils according to the present invention comprises a treatment tank for containing a liquid to be treated and a heating unit installed near the lower portion of the treatment tank. An apparatus, a gas generator installed near the lower part of the treatment tank, a far infrared ray generator installed above the gas generator, and a microshell fossil added to the tank. Is. In the above structure, the far infrared ray generating means is made of bioceramic and is provided with a plurality of tanks for storing the liquid to be treated, and the waste liquid treated in the tank is sequentially introduced into other tanks.

[0008]

According to the solid and oil coagulation / separation device thus constructed, when the liquid to be treated is aerated by the gas generator installed in the tank, the heating device installed in the tank. The thermal energy is applied to the liquid to be treated and the far infrared ray generator above the gas generator, and the far infrared rays generated from the far infrared ray generator promote the activation of water molecules in the liquid to be treated, and the fine particle shellfish. With fossils as nuclei, they aggregate while entraining solid matter in the liquid and minute oil droplets, and flocs or aggregates precipitate and separate from the liquid. Further, in the present invention, above the gas generator, a far-infrared ray generating device, in particular, a bioceramic is arranged. Even if there is a part where the detailed mechanism is unknown, the far-infrared ray causes water in the liquid to be treated. It changes the molecule and promotes agglomeration and coarsening.

As described above, in order to coagulate and separate the fine solid particles in the liquid to be treated and the fine oil droplets of the emulsion, the equipment such as the tank is downsized as compared with the case where the chemical is used for the coagulation and separation. It can be easily treated without producing sludge, and even in the case of highly stable colloidal particles, the particles in the liquid can be efficiently aggregated and separated.

[0011]

EXAMPLES Examples of the present invention are shown below with conceptual side views.

FIG. 1 is a conceptual side view showing an example of the implementation of the apparatus for coagulating and separating solids and oils according to the present invention. In FIG. 1, reference numeral 1 is a tank for storing a liquid to be treated, which is discharged from a painting process of an automobile maintenance factory and contains fine oil droplets of the emulsion, fine solid particles, and the like. Reference numeral 1 is a partition plate, which is separated by a first partition plate 2a, a second partition plate 2b, and a third partition plate 2c from a partition plate close to the liquid to be treated introduction pipe 3 at a constant interval. The first tank 1a, the second tank 1b, the third tank 1c, and the fourth tank 1 are arranged in order from the processing tank near the liquid introduction pipe 3.
It is separated into d and.

The liquid to be treated introduced from the liquid to be treated pipe 3 is introduced from the first bath 1a to the second bath 1b and then the third bath.
It flows to the tank 1c and the fourth tank 1d, and is finally discharged from the discharge pipe 4 to the outside of the apparatus.

Reference numeral 5a is a gas introducing pipe as a gas releasing means penetratingly arranged near the lower part of the tanks 1a, 1b, 1c, and air is discharged from the aeration pipe 5a at the end thereof. The aeration can be performed in the tanks 1a, 1b, 1c.

Reference numeral 6 denotes an electric heater as a heating means penetratingly arranged in the vicinity of the lower portion of the tanks 1a, 1b, 1c, 1d, and the inside of the tank is generated by the heat generated by the electric heater. The liquid to be treated can be heated,
The heating temperature can be exemplified in the range of 15 to 40 ° C.

It is convenient and cost-effective to use part of the output of an air compressor normally installed in an automobile maintenance factory as the aeration gas.

Reference numeral 7 is for monitoring the temperature of the liquid to be treated,
It is a thermometer installed in the tank 1a.

9 is a bioceramic as a far infrared ray generating means disposed above the aeration pipe 5b. This bioceramic has recently attracted attention as one that exhibits various effects, and its main components are:
In the present invention, such as silica, alumina, ferric oxide, titanium oxide, etc., the porcelain clay composed of the above main components is molded into a tile shape and an appropriate number of through holes are provided, and then coated with a fine powder of natural ore. An appropriate number of those sintered at about 1300 ° C. are installed in the vertical and horizontal directions. The bioceramic used in the present invention is known to generate far infrared rays of 7.6 to 13 microns.

In one example of the apparatus of the present invention configured as described above, the liquid to be treated stored in the tank 1a is agitated by the gas discharged from the aeration pipe 5b and placed in the tank. The far-infrared ray generator 8 which receives thermal energy from the electric heater emits far-infrared rays, and activates water molecules in the liquid to be treated, and agitates the liquid to be treated, so that 0.9 V or less. Weak electric energy is generated, and by this electric energy, water molecules are decomposed into ions, react with hydroxyl ions in the liquid to form flocs, and the fine shellfish fossils that are put into the liquid to be treated are used as the core. The solid particles in the liquid are agglomerated while being entrained, and flocs, that is, agglomerates are precipitated. This shell fossil is a natural mineral collected from a sedimentary layer containing many fossils such as shellfish and underwater microorganisms. Its main components are calcium oxide, silicon dioxide,
Soluble lime in calcium oxide, which is the main component of aluminum oxide, iron oxide, etc., dissolves slowly in water, so stabilizes the pH for a long time and stabilizes nitrogen, phosphorus, hydrogen sulfide, etc. in water as a stabilizer. It is characterized by changing its concentration to lower its concentration, preventing eutrophication, and suppressing the generation of malodor. In the present invention, the above-mentioned fossil shells are added to the liquid to be treated in the tank 1a in an appropriate amount.

The liquid to be treated after repeating this operation 1b and 1c to separate the solid matter is discharged from the fourth tank 1d through the discharge pipe 4 over the third partition plate 2c. The flocs settled on the bottoms of the tanks 1a, 1b, 1c and 1d are discharged by an appropriate method after the treatment.

Actually, when the liquid to be treated is treated by the solid and oil aggregating and separating apparatus having the above-mentioned constitution, the concentration of normal hexane in the liquid to be treated is determined by, for example, the waste water discharged from an automobile maintenance plant. Was able to be reduced to 2 ppm for a long time, which is below the emission standard of 5 ppm currently applied. According to the experiment, in the case of wastewater in which fine solid particles and fine oil droplets were mixed, the best aggregation / separation effect was obtained when the wastewater temperature was 35 ° C.

[0022]

[Table 1] According to Table 1, the solid and oil coagulation separation tank of the present invention is
It can be seen that the normal hexane was processed efficiently.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of an apparatus for aggregating and separating solids and oil.

[Explanation of symbols]

 1 treatment tank 1a 1st tank 1b 2nd tank 1c 3rd tank 1d 4th tank 2a 1st partition plate 2b 2nd partition plate 2c 3rd partition plate 3 treated liquid introduction pipe 4 discharge pipe 5a Gas introduction pipe 5b Aeration pipe 6 Electric heater 7 Thermometer 8 Bioceramic

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location C02F 9/00 502 C02F 9/00 502L 503 503C

Claims (3)

[Claims] 1. A processing tank for containing a liquid to be processed, a heating means installed near the lower part of the processing solution tank, a gas generating means installed near the lower part of the processing tank, and an upper part of the gas generating means. An apparatus for aggregating and separating solid and oil particles, which comprises an installed far-infrared ray generating means for aggregating and separating fine solid particles and oil particles from the liquid to be treated. 2. The apparatus for aggregating and separating solids and oils according to claim 1, wherein the far infrared ray generating means is bioceramic. 3. The apparatus for aggregating and separating a solid matter and an oil fraction according to claim 1, which is a fine shell fossil to be added in order to accelerate the aggregating action of the minute solid matter particles and the minute oil content particles of the liquid to be treated.