JPH09220559A - Circulating type purifying apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively purify a contaminated soln. by together using a filter agent based on humic allophane soil and activated carbon and using both of them in a pressurized state. SOLUTION: In this circulating type purifying apparatus equipped with a raw soln. tank 1 storing a contaminated soln. W1 , a filter tank 2 filtering the contaminated soln. W1 pumped up from the raw soln. tank 1 and the liquid circulating means 3 circulating the contaminated soln. M between the raw soln. tank 1 and the filter tank 2, an activated carbon bed 9 packed with activated carbon and a filter agent bed 10 packed with a fine granular filter agent obtained by mixing and bonding humic allophane soil using ejecta having a large number of pores as a raw material by a binder are built in the filter tank 2 in a pressurized state to enhance the adsorbing capacity of activated carbon and the filter agent to a large extent to make it possible to effectively purify the contaminated soln.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circulation type purifying device for purifying sewage or cleaning waste liquid generated from a toilet.

[0002]

2. Description of the Related Art Conventionally well-known methods for purifying polluted liquids include those that purify sewage using sand or activated carbon. Particularly, sewage in toilets containing a large amount of ammonia component is purified. It was insufficient as a thing. For example, when activated carbon is used, it is effective for adsorbing a small amount of odorous substances in a relatively short period of time, but is not suitable for applications requiring stable deodorizing performance for a long period of time. Further, in the case of a contaminated liquid containing a large amount of fats and oils, such as a cleaning liquid waste, it is better to dispose of it after neutralizing it because there is no suitable purification method.

By the way, since humic allophane soil made from volcanic ejecta having a large number of pores has excellent adsorption and deodorizing performance, this humic allophane soil has attracted attention as a purifying agent for purifying sewage. Is coming.

This humic allophane soil is obtained by separating and removing plant roots, gravel and the like from volcanic products, and contains allophane and humic acid as main components. As its extraction method, for example, after washing the volcanic ejecta with water and applying a vibrator to remove unnecessary substances such as plant roots and gravel, it is further dried in the sun to remove the contained water to remove allophane and humic acid as main components. There is a method of collecting and collecting what is done.

The above allophane, when viewed with an electron microscope,
Although observed as small spherical particles, these particles
It is a clay mineral that exhibits a hollow sphere with a diameter of approximately 50 angstroms and exhibits a mutation charge. The mutation charge is a charge whose amount and sign change depending on the concentration and pH of the surrounding solution in contact, and the hydrogen ions resulting from the respiration of microorganisms are exchanged for metal ions and transferred to water. When it is taken up by the microorganism and the metal ion is reduced as a result, a phenomenon occurs in which the exchangeable cognate ion adsorbed on the nucleus supplements it.

[0006] Water contains various substances such as carbon dioxide and other gas substances as well as organic and inorganic compounds dissolved or dispersed therein. The particle surface area per hit becomes very large, the reaction at the interface is activated, and the core surface is negatively charged, which attracts a large number of cations. In particular, since a lot of active free aluminum oxide is present in allophane, phosphoric acid and fluorine in water are well adsorbed. As a result, a so-called electric double layer is formed. The electric double layer causes a phenomenon in which the adsorbed substance is adsorbed to another substance and ionized similarly to the magnetic + and − ionization.

On the other hand, humic acid reacts with ammonia, which is a source of organic odor, to form ammonium humate, and also binds with calcium ions, cadmium ions, mercury ions, magnesium ions, sodium ions, etc. to form hard water. Has the action of softening water and precipitating heavy metals. It also adsorbs methyl mercaptan and methyl inzole.

[0008] That is, allophane soil has a very effective action as a pollutant cleaning agent.

[0009]

However, although allophane soil is extremely effective as a pollutant purifying agent as described above, the particles obtained by separating and sorting from volcanic ejecta are too small particles, so that they cannot be used as they are. Limited use,
It is unsuitable as a filtering agent for purification. Therefore, it has been attempted to combine allophane soil with a suitable binder to form a block and crush it into a block and use it as a filtering agent. As a result of the gap being formed between the filtering agents if only filled in the tank, the contaminated liquid to be filtered will pass through the above-mentioned gap, making it difficult for the contaminated liquid to permeate into the pores in the filtering agent. However, in the case of highly contaminated liquid, purification may be insufficient.

The present invention has been made in view of the above points, and a contaminated liquid can be removed by using a filter agent containing humic allophane soil as a main component and activated carbon in combination, and by using both in a pressurized state. The purpose is to effectively purify.

[0011]

In the basic configuration of the present invention, as means for solving the above problems, a stock solution tank for storing a contaminated liquid, and a filtration tank for filtering the contaminated solution pumped up from the stock solution tank are provided. In a circulation type purification device comprising a liquid circulating means for circulating a contaminated liquid between the stock solution tank and the filtration tank, an active carbon layer filled with activated carbon in the filtration tank and a volcano having a large number of pores A filter agent layer filled with a fine particulate filter agent, which is formed by mixing and bonding humic allophane soil, which is made from ejecta as a raw material, with a binder is built in under pressure to significantly improve the adsorption performance of activated carbon and filter agent. By improving it, the contaminated liquid can be effectively purified.

In the basic structure of the present invention, fine particles formed by mixing and binding a humic allophane soil made of a volcanic ejecta having a large number of pores as a raw material with a binder between the filtration tank and the stock solution tank. If an auxiliary filter tank containing only the filter agent under pressure is installed, it is possible to obtain a more completely purified fresh water because an effective contaminant liquid purifying action can be obtained even in the auxiliary filter tank. Is preferred.

Further, a plurality of sludge filter tanks for filtering the sludge liquid supplied from the sludge tank are connected to the stock solution tank, and the sludge filter tank is made of a volcanic ejecta having many pores as a raw material. When a fine-grained filtering agent formed by mixing and binding humic allophane soil with a binding agent is filled, a highly polluted degree (for example, sludge liquid) can be purified in advance in a sludge filter tank, so toilets etc. It is preferable in that it is extremely effective in purifying sludge liquid that forms.

In the case where air chambers for supplying pressurized air for aerating the sludge liquid in the sludge filtration tanks are provided below the sludge filtration tanks, respectively. It is preferable in that the contact efficiency between the dirty water and the filtering agent can be improved.

When a sedimentation tank for precipitating solid matter contained in the sludge liquid is provided between the sludge filtration tanks and between the sludge filtration tank and the stock solution tank, the solid matter contained in the sludge liquid is provided. Is preferable in that the precipitation removal can be performed.

[0016] The filter agent is finely granulated by mixing and combining a humic allophane soil obtained from a volcanic ejecta having a large number of pores with a predetermined amount of an inorganic acid with a binder. This is preferable in that the fresh water obtained after purification can be made neutral and there is no risk of water pollution even when discharged to a river or the like.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION A circulating purifying apparatus according to some preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

First Embodiment FIGS. 1 to 3 show a circulation type purifying apparatus according to a first embodiment of the present invention.

[0019] The circulating purifier A is intended to be used as a toilet, as shown in FIG. 1, contaminated liquid W ₁
A stock solution tank 1 for storing the same, a filter tank 2 for filtering the contaminated solution W ₁ pumped from the stock solution tank 1, and a liquid circulation for circulating the contaminated solution W ₁ between the stock solution tank 1 and the filter tank 2. And means.

In the stock solution tank 1, the one purified by the sludge filtering device B, which will be described later, is stored.

A plurality of (for example, two) auxiliary filtration tanks 4 and 4 are provided between the filtration tank 2 and the stock solution tank 1.

Further, the liquid circulating means includes a first auxiliary between the inlet pipe 5 extending from the stock solution tank 1 to the filtration tank 2, the upper portion of the filtration tank 2 and the lower portion of the first auxiliary filtration tank 4. Connection pipes 6 and 6 respectively connecting the lower part of the filtration tank 4 and the second auxiliary filtration tank 4, an outlet pipe 7 from the second auxiliary filtration tank 4 to the stock solution tank 1, and an inlet pipe 5 And a pumping pump 8 disposed in the.

In the filter tank 2, an activated carbon layer 9 filled with granular activated carbon and a predetermined amount (for example, 5 to 10) of humic allophane soil made from volcanic ejecta having a large number of pores are used as raw materials. A filter agent layer 10 filled with a fine granular filter agent (for example, 5 to 20 mm per piece), which is obtained by mixing and binding an inorganic acid (for example, sulfuric acid) in an amount of (wt%) with a binder (for example, cement). Are incorporated in a pressurized state by the pressurizing means 11. Here, the amount of the activated carbon layer 9 is preferably about 10 to 50% of the amount of the filter agent layer 10. As the pressurizing means 11, for example, a coil spring is adopted. It should be noted that the activated carbon and the filtering agent are contained in a bag-like filter having fine meshes. Reference numeral 12 is a plate.

By the way, as described above, the reason why the inorganic acid (for example, sulfuric acid) is added in the process of forming the filtering agent is as follows.
While killing various bacteria contained in the humic allophane soil,
This is for neutralizing the alkalinity of the cement used as the binder. By doing so, it is possible to prevent the propagation of various bacteria, and it is possible to use the obtained fresh water W ₂ as a neutral liquid, and even if it is discharged to a river or the like, there is no possibility of causing water pollution. The amount of the inorganic acid added was set to 5 to 10% by weight because the bactericidal action was insufficient at 5% by weight or less and the fresh water W obtained at more than 10% by weight.
_{This is because 2} may become an acidic liquid. Even if a filter agent containing no inorganic acid is used in the process of forming the filter agent, the purifying action can be sufficiently obtained.

In each of the auxiliary filtration tanks 4, a predetermined amount (for example, 5 to 10% by weight) of inorganic acid (for example, 5 to 10% by weight) is added to humic allophane soil made of volcanic ejecta having many pores as a raw material. Sulfuric acid) added to the binder (eg cement)
Fine particles (for example, 5-20 pieces per piece)
(mm) of the filtering agent tank 10 filled with the filtering agent is contained in a pressurized state by the pressing means (that is, the coil spring) 11.

The sludge filter B comprises a sludge tank 13 for storing the sludge liquid W ₀ discharged from the toilet, and a plurality (for example, four) of sludge filter tanks for filtering the sludge liquid W ₀ supplied from the sludge tank 13. 14A, 14B, 14C, 14D, and aeration for sludge liquid W ₀ in each sludge filtration tank 14A, 14B, 14C, 14D below each sludge filtration tank 14A, 14B, 14C, 14D pressurized air Q air chamber 15A supplies of, 15B, 15C, 15D and the respective sludge filtration tanks 14A, 14B, 14C, located on the outlet side of the 14D and between sludge filtering tank 14D in the sludge liquid W ₀ Settling tanks 16A, 16B, 16 for settling solids contained therein
And C and 16D.

The sludge filtration tanks 14A to 14D and the sedimentation tank 1
6A to 16D are paired with each other, and liquid transfer from the sludge filter tanks 14A to 14D to the settling tanks 16A to 16D is performed by overflow, and liquid transfer from the sludge tank 13 to the first sludge filter tank 14A, Liquid transfer from the first settling tank 16A to the second sludge filtration tank 14B, liquid transfer from the second settling tank 16B to the third sludge filter tank 14C, third sludge filtration from the third settling tank 16C. Liquid transfer to tank 14D, fourth settling tank 16
Liquid transfer from D to the stock solution tank 1 is performed by liquid transfer pipes 17A to 17E.
It will be carried out by each.

Further, in the air chambers 15A to 15D, air nozzles 18, 18 ... For ejecting upwardly the pressurized air Q which is pressure-fed by an air pump (not shown) are disposed.

Further, it is purified by a circulation type purification device,
The fresh water W ₂ stored in the stock solution tank 1 is supplied to the circulation pump 19
It is supposed to be returned to a low tank (not shown) for cleaning the toilet via.

As the filter agent contained in each of the sludge filter tanks 14A to 14D, the same ones as those filled in the filter tank 2 and the auxiliary filter tank 4 are adopted.

The circulation type purifying apparatus having the above-mentioned structure has the following effects.

When the sludge liquid W ₀ is stored in the sludge tank 13 and sent to the first sludge filtration tank 14A via the liquid feed pipe 17A, it is aerated by the pressurized air Q sent to the air chamber 15A. At the same time, the sludge liquid W ₀ and the filter agent come into contact with each other, and a part of the pollutants contained in the sludge liquid W ₀ is adsorbed by the filter agent or removed by a chemical reaction. And the first sludge filtration tank 14
The sludge liquid W ₀ from A overflows due to aeration by the pressurized air Q and is sent to the first settling tank 16A, where the solid matter contained in the sludge liquid W ₀ is precipitated and removed.

Then, when a predetermined amount of sludge liquid W ₀ (slightly cleaned sludge liquid) is accumulated in the first settling tank 15A, the sludge liquid W ₀ is passed through the liquid feed pipe 17B to the second sludge filtering tank. 14B, the second sludge filtration tank 14B adsorbs and removes the chemical reaction of the pollution source in the same manner as in the first sludge filtration tank 14A. After that, the second settling tank 1
6B, third sludge filtration tank 14C, third sedimentation tank 16C,
In the fourth sludge filtration tank 14D and the fourth sedimentation tank 16D, the adsorption / chemical reaction removal of the pollution source and the precipitation removal of the solid matter are carried out, and the pollution source is almost completely removed into the liquid W ₁ , and the liquid supply pipe 17E is supplied. It is sent to the stock solution tank 1 via. The liquid W ₁ sent to the stock solution tank 1 is clean water with no odor, but the transparency is slightly inferior to that of tap water (that is, the transparency is about 8).

Therefore, the liquid stored in the stock solution tank 1 (hereinafter,
The contaminated liquid) is further purified by the circulation type purification device A.

[0035] That is, by driving the pumping pump 8 sends contaminated liquid W ₁ in the stock tank 1 in the filtration tank 2, the circulating cleaning is to circulate through the filtration tank 2 and the auxiliary filter tank 4, 4 to a concentrate tank 1 To be executed. Then, the contaminated liquid W ₁ is completely purified by the activated carbon layer 9 for removing the dye and the filtration layer 10 for removing the adsorption / chemical reaction. The purified liquid W ₂ thus obtained has a transparency of 30.
With the above, the water is as clean as tap water.

The purified liquid W ₂ obtained as described above is
If this is returned to a low tank (not shown) for toilet cleaning via the circulation pump 19, it can be reused. Moreover, the fresh water W ₂ also has a deodorizing effect, and is optimal for toilet cleaning.

By the way, the above-mentioned cleaning action includes the action of adsorbing pollutants by allophane contained in allophane soil (that is, adsorption of phosphoric acid and fluorine in water), humic acid and ammonia, calcium ion, cadmium ion, mercury ion, Due to the binding action with magnesium ion, sodium ion, etc. and the adsorption action with methyl mercaptan and methyl inzole. Moreover, the purifying action by the allophane soil is effective for a long period of time due to the formation of the electric double layer as described above.

Next, the results of an experiment conducted to confirm the purifying action of the above circulation type purifying apparatus will be described.

Humic allophane soil and sulfuric acid (7% by weight) were used as active ingredients and cement was mixed and bonded as a binder to prepare a plate-like material having a thickness of 3 cm and a width of 30 cm × 30 cm, which was crushed with a hammer. As a result, a filter having a size of 10 mm or less was obtained. The filtration tank 2 and the auxiliary filtration tanks 4 and 4 were constituted by a pipe having a diameter of 200 mm and a height of 600 mm.

Then, 100 l of odorous sewage W ₁ having a transparency of 8 was stored in the stock solution tank 1, and the pump 8 was driven to circulate the sewage W ₁ at a flow rate of 18 l / min. After 30 minutes, Odorless water with a transparency of 30 or more was obtained.

From the results of the above test, it is clear that the present invention has an extremely high purifying action (in particular, deodorizing / decolorizing action).

Next, the results of the water quality test using the filtering agent used in the present invention (that is, the product of the present invention containing allophane soil + 7 wt% sulfuric acid) and only the humic allophane soil (conventional product) are shown in Table 1. Shown in.

[0043]

[Table 1]

From the above results, it can be seen that the filtering agent used in the present invention is superior to conventional products in all test items. In particular, low general bacteria,
It can be seen that it is particularly excellent in that the chlorine ion is reduced and the PH value is neutral.

In the above description, the circulation type purifying device A and the sludge filtering device B are used together, but the sludge filtering device B is not always necessary when purifying contaminated liquid containing no sludge or the like. Further, although the one having two auxiliary filtration tanks and four sludge filtration tanks is taken as an example, the number of auxiliary filtration tanks and sludge filtration tanks can be appropriately set.

Further, in the above embodiment, sulfuric acid is used as the inorganic acid added to the allophane soil,
Other inorganic acids (such as hydrochloric acid) may be used. Further, a binder other than cement may be used in some cases.

Second Embodiment FIG. 4 shows a circulating purifying apparatus according to a second embodiment of the present invention.

This circulation type purifying apparatus A comprises a stock solution tank 1 and a filter tank 2, and is used for recycling cleaning waste liquid. That is, the cleaning waste liquid W ₁ is stored in the stock solution tank 1. The other configuration and operation and effect are the same as those in the first embodiment, and the description is omitted.

In order to confirm the effect of the circulation type purifying apparatus A according to this embodiment, a test for purifying the cleaning waste liquid was conducted, and the results shown in Table 2 were obtained.

[0050]

[Table 2]

According to the above results, when the cleaning waste liquid is highly contaminated, it is necessary to increase the number of circulations. However, if circulation is performed up to 350 times, the normal value is 0.2.
It can be seen that it becomes lower than 0.3 ppm. In other words, this is nothing but the result of the adsorption / chemical reaction removal action of the circulating purification apparatus A.

[0052]

According to the present invention, a stock solution tank for storing a contaminated solution, a filter tank for filtering the contaminated solution pumped from the stock solution tank, and a contaminated solution between the stock solution tank and the filter tank In a circulation type purification device equipped with a liquid circulation means for circulation, in the filter tank, an activated carbon layer filled with activated carbon and a humic allophane soil made from volcanic ejecta having a large number of pores are mixed with a binder. A filter agent layer filled with a fine-grained filter agent formed by bonding is built in under pressure to significantly improve the adsorption performance of activated carbon and the filter agent, so that the contaminated liquid is effectively purified. The excellent effect of being able to be obtained is obtained.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a circulation type purification device according to a first embodiment of the present invention.

FIG. 2 is a plan view of a sludge filtration device in the circulation type purification device according to the first embodiment of the present invention.

FIG. 3 is an enlarged cross-sectional view of a circulation filtration portion in the circulation type purification device according to the first embodiment of the present invention.

FIG. 4 is a vertical cross-sectional view of a circulation type purification device according to a second embodiment of the present invention.

[Explanation of symbols]

1 is a stock solution tank, 2 is a filtration tank, 3 is a liquid supply means, 4 is an auxiliary filtration tank, 8 is a pumping pump, 9 is an activated carbon layer, 10 is a filter agent layer, 11 is a pressurizing means (coil spring), and 13 is Sludge tank, 14A-14D are sludge filtration tank, 15A-15D
Is an air chamber, 16A to 16D are settling tanks, A is a circulation type purification device, B is a sludge filtration device, W ₀ is a sludge liquid, W ₁ is a contaminated liquid, W
₂ is fresh water and Q is pressurized air.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location C02F 3/10 C02F 3/10 Z (71) Applicant 596021632 Hideki Yamamoto 3 Minami Zao Town, Fukuyama City, Hiroshima Prefecture No. 9-34 (72) Inventor Shusaku Morimoto 28-15 Godaiyama, Kochi City, Kochi Prefecture

Claims (6)

[Claims] 1. A stock solution tank for storing a contaminated solution, a filtration tank for filtering the contaminated solution pumped up from the stock solution tank, and a liquid circulation means for circulating the contaminated solution between the stock solution tank and the filtration tank. In the circulation type purifying apparatus, the activated carbon layer filled with activated carbon and the humic allophane soil made from volcanic ejecta having a large number of pores are mixed and bound by a binder in the filtration tank. And a filtering agent layer filled with the following fine granular filtering agent are incorporated in a pressurized state. 2. Only a fine-grained filtering agent formed by mixing and binding a humic allophane soil made of a volcanic ejecta having a large number of pores with a binding agent between the filtration tank and the stock solution tank. The circulation type purifying apparatus according to claim 1, wherein an auxiliary filtration tank in which the above is pressurized is provided. 3. A plurality of sludge filter tanks for filtering the sludge liquid supplied from the sludge tank are connected to the stock solution tank,
The sludge filter tank is filled with a fine-grained filter agent obtained by mixing and binding humic allophane soil made of volcanic ejecta having a large number of pores with a binder. The circulating purification apparatus according to any one of claims 1 and 2. 4. An air chamber for supplying pressurized air for aerating the sludge liquid in each sludge filtration tank is provided below each of the sludge filtration tanks. The circulating purification apparatus according to claim 3, wherein 5. A settling tank for settling solid matter contained in sludge liquid is provided between the sludge filter tanks and between the sludge filter tanks and the stock solution tank. The circulating purification apparatus according to any one of claims 3 and 4. 6. The filtering agent is formed into fine particles by mixing and binding a mixture of a humic allophane soil obtained from a volcanic ejecta having a large number of pores with a predetermined amount of an inorganic acid with a binder. The sewage purification device according to any one of claims 1 to 5, wherein the sewage purification device is a waste water purification device.