JPS5814967Y2 - Composite material for emulsified oil treatment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a so-called emulsified oil wastewater treatment material in which oil is in an emulsified state, which has become a major social problem due to pollution and the like in recent years.

Conventional treatment methods include, for example, electrolytic methods, salting-out agents,
There are various methods such as adding flocculants, adsorbents, etc. to separate oil and water by pressurized flotation, coagulation sedimentation, filtration, etc., and dissolving and extracting the oil using a solvent, but all of them require large-scale equipment and It has drawbacks such as requiring a long processing time.

In order to eliminate the above-mentioned drawbacks, the present invention provides a treatment material that meets the demand for simple and effective treatment of wastewater at the source.

The basic principle of emulsified oil treatment related to this invention is to destroy the emulsified state by bringing emulsified oil fine particles into contact with an amine-based treatment agent that has the best emulsification effect as an organic compound.
The method involves coarsening the particles and adsorbing the coarsened oil particles with a fiber aggregate, ie, a filter material, etc., having oil-absorbing performance.

Based on this principle, the contents and advantages of the present invention will be explained with reference to the drawings.

In the present invention, usable amine-based treatment agents refer to primary amines having a carbon number of 10 to 20 or their tubular derivatives, and by using these specified treatment agents,
The treated material of the present invention has remarkable effects.

Treatment materials constructed as in the present invention using other general treatment materials, such as amine treatment agents having 9 or less carbon atoms or 21 or more carbon atoms, generally have poor treatment effects in many cases.

The specific reaction temperature that can be used in this invention is as follows:
Decylamine, laurylamine, myristylamine, palmitylamine, oleylamine.

Mention may first be made of free amines such as stearylamine.

Furthermore, the tubular derivatives include amine derivatives such as N-stearylthioacetamide, N-stearyl-P-)luenesphonade, and various so-called amino group tubular derivatives such as mineral acid salts and Schiff bases of the amines. sexual derivatives can be used as treatment agents.

Among the above-mentioned free amines and their tubular derivatives, i
Preferred are stearylamine, valmitylamine and their tubular derivatives, and the most preferred is stearylamine.

As a method for applying the amine treatment agent, it is preferable to use, for example, a solution of stearylamine dissolved in an organic solvent, or a heated melt of stearylamine.

The emulsified oil treatment composite material of the present invention is created by using a perforated cylindrical core tube and wrapping it around a fiber aggregate impregnated with an amine-based treatment agent and a fiber aggregate with oil absorption performance. can do.

Examples of fiber aggregates to which amine treatment agents are applied include polyester, nylon, and polypropylene.

A nonwoven fabric made of fibers such as rayon is best, but a greater treatment effect can be achieved by using a thin and uniform nonwoven fabric with a fiber denier as fine as possible.

Figure 1 shows a hollow shaft wrapped with fiber aggregates that have oil-absorbing properties.
A perspective view of a composite material for emulsified oil treatment formed by winding and laminating fiber aggregates to which an amine-based treatment agent has been applied to the soil layer, and a part of its cross section. 1 is a core tube, 2 is a core body. It shows a fiber aggregate having oil absorption performance.1.The fiber form can be tow, filament, woven fabric, non-woven fabric, etc.

The fiber material must be oil-absorbing, such as polyester, nylon, polypropylene, rayon, or the like.

3 shows a fiber aggregate to which an amine-based treatment agent has been applied, and the fiber form must be uniformly impregnated with the necessary and sufficient amount of the amine-based treatment agent, have a uniform structure, and have a uniform structure. Polyester with high density, etc.
Nonwoven fabrics made of nylon, polypropylene, rayon, etc. are preferable.

Figure 2 shows a hollow shaft formed by winding and laminating at least one layer each of a fiber aggregate with oil-absorbing properties (in this case, a sheet form is preferable) and a fiber aggregate (non-woven fabric) coated with an amine-based treatment agent. 1 is a perspective view of a composite material for treating emulsified oil and a part of its cross section.

In order to efficiently treat emulsified oil as described above, it is necessary to bring as many emulsified oil fine particles into contact with the amine treatment agent as possible, and after coarsening the particles, adsorb them.

Therefore, the fiber denier is preferably as thin as possible, the sheet-like material such as non-woven fabric is thin and uniform, and the fiber is wound densely to form a multilayer structure.

When actually treating emulsified oil using the composite material of the present invention, the composite material shown in Fig. 1 or 2 is incorporated into a cartridge-type housing, and the emulsified oil is passed from the outside to the inside (core body). Preferably, it is treated.

To further explain the present invention in detail, in Figures 1 and 2, the fiber aggregate 3 to which an amine-based treatment agent has been applied has the role of breaking the emulsion state (emulsion break), and its structure is that of emulsified oil (waste water) and amine-based treatment agent. It has a relatively dense structure to ensure reliable contact with the processing agent.

Therefore, the oil content in the emulsion-broken wastewater is in a dispersed form, and part of it is coarsened, causing a pressure loss of 9 when passing through the fiber aggregate.

On the other hand, the fiber aggregate 2 having oil dispersion performance generally has a structure with low flow resistance and efficiently absorbs coarse dispersed oil, but the pressure loss is small.

Considering the role of each of the fiber aggregates 2 and 3 in this way, it is effective to flow the water to be treated at right angles to the flat fiber aggregates, but it is effective to flow the water to be treated at right angles to the flat fiber aggregates. The effectiveness of a combination of emulsified oil removal is limited by the amount of treatment, concentration of emulsified oil in wastewater, etc., and emulsion and dispersed oil may still remain after one treatment. It is necessary to aim at ensuring removal of emulsified oil in stages.

As in the present invention, winding and stacking the emulsified oil in a columnar manner around a hollow shaft is the most practical form in order to ensure the removal of emulsified oil, and to keep the pressure loss as low as possible. It has the following advantages: the highest possible emulsified oil removal effect can be obtained, the number of treatment stages can be easily changed by changing the winding diameter, the treatment operation is simple, and the sealability of the water to be treated is excellent.

By adopting a configuration like this, even if the flow rate of the water to be treated changes, if the number of stacked layers is set in advance according to the maximum flow rate, the oil concentration in the water to be treated will not exceed the allowable value. .

Furthermore, by flowing the water to be treated from the outside to the inside, the flow velocity of the fiber aggregate on the outside where the oil content is high is kept at a low level, and the flow velocity on the inside where most of the oil content is removed is relatively high. As a result, the pressure loss of the composite material as a whole can be reduced.

The present invention will be described in more detail below with reference to Examples.

Examples Fiber aggregate 3 (thickness 5 m/m) made of polypropylene tow spread nonwoven fabric with a basis weight of 150 g/m2 and stearylamine added at 150 g/m2; Fiber aggregate 2 made of a polypropylene tow spread nonwoven fabric with a basis weight of 1009/m2 (thickness lom
/m) and wound it into a columnar shape around a hollow shaft as shown in Fig. 2, with an inner diameter of 35 m/m and an outer diameter of 155 m/m and a height of 1.
A composite material of 50 m/m was obtained.

On the other hand, after leaving a compressor drain with an oil content of 1000 to several thousand ppm still and separating the floating oil and lightly dispersed oil, the oil content is l
It was OO~300ppm.

When the drain with an oil content of 100 to 300 ppm after separation was used as the water to be treated and was passed through the composite material from the outside to the inside at a rate of 40 #/h, the oil concentration in the water after treatment was 2 to 5 ppm.
The pm and oil content decreased to the same level as normal treated water.

By treating wastewater containing emulsified oil with the composite material of the present invention in this manner, it is possible to remove oil to the same extent as normal treated water.

[Brief explanation of drawings]

1 and 2 are perspective views of the composite material for emulsified oil treatment according to the present invention, in which 1 is a core tube, 2 is a fiber aggregate with oil absorption performance, and 3 is a fiber aggregate to which an amine-based treatment agent has been applied. shows.

Claims (1)

[Scope of utility model registration request] A fiber aggregate to which an amine-based treatment agent such as a primary amine having 10 to 20 carbon atoms or a tubular derivative thereof has been applied and a fiber aggregate having oil-absorbing properties are wound into a columnar shape around a hollow shaft and laminated. Composite material for processing emulsified oil.