JPH0519682A - Educational material and educational kit for water treatment - Google Patents

Abstract

PURPOSE:To provide the educational material which enables anybody to easily experience the water treatment. CONSTITUTION:The educational material is obtained by providing elements of artificial raw water for a coagulating treatment experience which is made of at least a colored high polymer organic material and a coagulant, and the educational kit for the water treatment is constituted by arranging a treatment instrument equipped with at least a transparent container and a treatment effect decision means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides teaching materials for giving an experience of water treatment as a part of environmental conservation education.

[0002]

2. Description of the Related Art Recently, the problem of global environmental pollution has been spotlighted, awareness of pollution prevention has risen again, and interest in environmental conservation education has increased. Experiments and practical training, which are a part of education, are important as experiential learning.Experience learning is not enough because environmental conservation education has recently been visited at sewage treatment facilities, etc. I can not say. Further, although there has been a water quality analysis kit in the past, there were no water treatment education kits provided with artificial raw water and no water treatment education materials. This is because environmental conservation technology is special and difficult and requires specialized knowledge.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide educational material for anyone to easily experience water treatment.

[0004]

The object of the present invention is to provide an educational material for water treatment, characterized in that 1) at least an artificial raw water for coagulation treatment experiment consisting of colored polymer organic matter and an aggregating agent are provided. Achieved by providing.

Further, the object of the present invention is to 2) provide at least a transparent plastic or glass container for a water treatment educational material provided with an artificial raw water for flocculation treatment experiment and a flocculant which are composed of at least a colored polymer organic substance. By providing a water treatment education kit in which a treatment tool is arranged, and further, if necessary, the water treatment education kit is provided with a treatment effect determining means including a water quality analysis reagent and the like. Is more appropriately achieved by

The above-mentioned artificial raw water for coagulation treatment is a material in which a colored polymer organic substance and powders or liquids as described in detail below are mixed. It refers to something that can make artificial raw water.

[0007] The coloring polymer organic substance is selected from at least humic substances, alkaline lignin, and food additive dyes.
More than one organic matter is used. It is desirable that the organic substances be alkali-treated in advance.

Furthermore, the artificial raw water for the coagulation treatment experiment contains a floating solid powder (eg kaolin powder) and / or
Alternatively, it preferably contains a phosphate ion (phosphoric acid or a salt thereof).

Further, the aggregating agent preferably contains at least an inorganic metal salt.

[0010]

[Specific Embodiment] The educational material of the present invention and a method of using the same are specifically illustrated below. However, the present invention is not limited to the following description.

After adding a raw material of artificial raw water consisting of humic substance (dry solid or solution) and kaolin powder, which have been previously alkali-treated so as to dissolve in water, to a container of 500 to 1000 ml of glass or transparent plastic, tap water is added. Dissolve and dilute with water. Since the humic substance is colored brown, the color of the artificial raw water in which the humic substance is dissolved is also light brown.

Next, an attached acidic inorganic coagulant consisting of iron salt, aluminum salt, etc. was added, and the mixture was stirred with a stirring rod at a stirring speed of about once per second for 0.5 to 1 minute (rapid stirring). In addition, by further stirring with a stirring bar for about once every 3 seconds (slow stirring), when a floating substance (fluffy lump) of 1 to 3 mm is generated in the container, stop stirring and allow the content liquid to stand,
Wait 5-20 minutes for the float to settle. Once the supernatant has formed, observe that the colorants have settled out by this experiment.

Further, in order to shorten the standing time for sedimentation separation, a small amount of the organic polymer coagulant may be added immediately before the slow stirring. After the end of the experiment, the solution in the container is harmless and may be directly thrown away.

To examine the color tone and turbidity removal of the supernatant,
It is advisable to incline the container and separate only the supernatant into a separately provided transparent container, and compare it with the liquid before addition of the coagulant, which was previously stored in the similarly provided container. Also, if the color remains in the preparative supernatant, add powdered activated carbon to the preparative solution,
After stirring for 1 to 3 minutes with a stirring rod about once per second, filtering with filter paper and observing the filtered water, you can experience that the color is completely removed by activated carbon.

In this experiment, in addition to the colored polymer organic matter and the buoyant powder solids, the soluble phosphate ion, which is the causative substance of the eutrophication of the water system, can be separated by sedimentation. The change in the phosphate ion concentration of the liquid before and after the addition of the aggregating agent may be confirmed by using a phosphate ion analysis reagent or the like. Since the phosphate ion develops a deep blue color by the analytical reagent, it can be seen that the aggregation and separation treatment is visually easy.

In a laboratory such as a school where beakers, stirring rods (usually glass rods), funnels, filter papers, and other experimental equipment are prepared, the contents of the educational material for water treatment are soluble colored polymer organic substances. The artificial raw water for coagulation treatment containing the raw material and the coagulant may be used, but in order to support the use in the place where there is no experiment equipment, the above-mentioned treatment experiment equipment should be stored according to the purpose of the experiment. It can be used as an educational kit for water treatment.

Further, a treatment agent such as activated carbon or a treatment effect judging means such as a phosphate ion analysis reagent can be prepared as an option. Examples of phosphate ion analysis reagents include the following. In Example 2, molybdenum blue [tin chloride (I
I)] The reagents for the absorptiometry were exemplified. The reagents used there are as follows.

Ammonium molybdate solution: 15 g of hexaammonium heptamolybdate tetrahydrate in about 150 parts of water
Dissolve this in sulfuric acid (1 ml of sulfuric acid in about 600 ml of water).
80 ml was added with gentle stirring and allowed to cool)
Add with stirring, then dissolve 10 g of ammonium amidosulfate and add water to make 1 liter.

Stannous Chloride Solution: Tin (II) Chloride
Dissolve 1 g of dihydrate in 5 ml of hydrochloric acid, add water to 50 m
L, add small tin particles, and place in a brown bottle for storage. Other phosphate ion analysis reagents include molybdenum blue [ascorbic acid] absorptiometry, and the reagents used therein are as follows.

L-ascorbic acid solution (7.2 W /
V%): Dissolve 7.2 g of L-ascorbic acid in water to give 1
Make up to 00 ml. Ammonium molybdate solution: 6 g of hexaammonium heptamolybdate tetrahydrate and tartrato antimony (II
I) 0.24 g of potassium acid is dissolved in 300 ml, 120 ml of sulfuric acid (2 + 1) is added thereto, 5 g of ammonium amidosulfate is dissolved, and then water is added to make 500 ml.

Ammonium molybdate-ascorbic acid mixed solution: ammonium molybdate solution and L
Mix the ascorbic acid solution in a volume ratio of 5: 1.
(Adjust when using.)

[0022]

EXAMPLES At least the following are prepared as examples of the contents of the educational material for water treatment of the present invention. However, the embodiment is not limited to this.

Example 1 * Source of artificial raw water: A capsule in which 20 mg of humic acid, 2 mg of disodium phosphate and 200 mg of kaolin powder were dissolved in 10 ml of 2.2% sodium hydroxide solution.

* Flocculant: Capsule containing 10 ml of 10% aluminum sulfate-18-hydrate solution * Powdered activated carbon: Capsule containing 1 g.

Take tap water in a beaker containing 1 liter,
It is only necessary to add 10 ml of raw artificial water, and then add the flocculant in the capsule and the powdered activated carbon in the order described in the specific embodiment.

The same effect can be obtained by using 20 mg of alkali lignin and 20 mg of food-added pigment as components instead of 20 mg of humic acid used for the artificial raw water.

As a water treatment education kit, for example, the following materials are prepared in addition to the above-mentioned water treatment education material of the present invention to prepare a water treatment education kit. However, the embodiment is not limited to this example.

* Processing equipment: 1 liter glass beaker or 1 liter glass wide-mouthed bottle with screw cap Stirring bar (glass rod) funnel and filter paper or integrated filter * Processing effect judging means: Coloring container: 50 ml screw with meridian Glass wide-mouthed bottle with pig At least 2 kerate ion analysis reagent: at least one pair with ammonium molybdate solution 5 ml capsule stannous chloride solution 0.25 ml capsule is a solution prepared according to JIS K0101 43.1.1.

In using the above water treatment education kit, 30 ml of artificial raw water and 30 ml of treated water were placed in a color developing container, and after confirming the individual shades, the above phosphate ion analysis reagent was added and mixed by shaking to about 15 After leaving for a minute, compare the color tone.

[0030]

[Effects of the Invention] With the educational material of the present invention, even a person having specialized knowledge can easily experience the physicochemical treatment method, which is one of the important water treatment methods, and environmental education It is extremely beneficial in terms of.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tomoko Yasui             4-2-1 Honfujisawa, Fujisawa City, Kanagawa Prefecture             Inside the EBARA Research Institute (72) Inventor Yuichi Fuchu             1-6-27 Konan Minato-ku, Tokyo Ebara Inn             Within Filco Co., Ltd.

Claims (2)

[Claims] 1. An educational material for water treatment, which comprises at least an artificial raw water for coagulation treatment experiment consisting of a colored polymer organic substance and a coagulant. 2. A water treatment education kit comprising the water treatment education material according to claim 1 and a treatment instrument including at least a transparent plastic or glass container.