KR890000791B1 - Catalytic filtering apparatus in cell for purifying night soil - Google Patents

Abstract

An apparatus for purifying night soil consists of (A) horizontal partition plate (17) for the division of upper oxidizing chamber (12) and lower pptg. chamber (16) and (B) a number of built-in purifying bags (13) contg. filter media (2) e.g. natural objects (i.e. floatstone, oystershells, coral), vinyl chloride resin products (denser than water) and polyethylene resin products (or styrofoam or wood splinters, lighter than water). In chamber (16) and (12), each (2) in (13) are controlled to be lighter or heavier than water respectively.

Description

Contact filtration apparatus in the urine septic tank

1 is a diagram showing one embodiment of a contact medium charging station used in the apparatus of the present invention.

2 is a plan view showing one embodiment of the apparatus of the present invention.

3 is a cross-sectional view taken along the line A-A of FIG.

4 is a cross-sectional view showing another embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: watchtower 2: contact medium

3: foamed styropol 4: wood-based shredded products

5: vinyl chloride molded article 6: inlet

7: drain hole 8, 9: manhole

10, 22: opening 11: partition wall

12: oxidation tank 13: contact medium charging station

14: bottom 15: lid

16: sedimentation tank 17: horizontal partition plate

18: side wall 19: intake exhaust pipe

20: mesh 21: soil

The present invention relates to a contact filtration device in a urine purification tank.

Conventionally, in Japan, the use of planar oxidized manure septic tanks has been recognized until June 1981, and almost all septic tanks have been standardized to reinforced plastics (FRP). However, the target water quality (BOD 90 ppm) has not been achieved as such septic tanks. There was a problem that it was not, and his use was totally eliminated.

Thus, the septic tank is currently being manufactured and sold in Japan, but is still introduced, manufactured, and sold in countries that do not have strict regulations on discharged water quality, such as East Asia, such as Korea and Taiwan.

However, since there are about 2 million conventional septic tanks of this kind installed in Japan so far, the development of a simple water quality improvement method that makes these septic tanks available as they are is an important social problem.

The reason why the conventional septic tank had to be abolished is that all of the purification principles are the primary treatment, the septic tank method, and the secondary treatment, with a shallow depth of about 1 cm between the gravel stones arranged in a zigzag shape. It was intended to oxidize and purify the urine by flowing it into a channel about 30 cm wide. Therefore, it has practicality as a pretreatment method in application with the trench method as in the United States, but does not recognize underground penetration method. However, in developing countries, which can be discharged by simple processing, they are theoretically completely heterogeneous.

Therefore, from a structural point of view, a slight change is made to the FRP septic tank manufactured and sold so far, or in order to utilize the approximately 2 million conventional septic tanks already installed in Japan. With the simple improvement of removing some structure or adding some materials, the emergence of the technology that can guarantee the discharge water quality of 90 ppm or less is expected.

The present invention has been made to meet the above-described expectations, and in order to minimize the necessary area required for installing the settling tank used in combination with the planar oxidizing septic tank, the lower part of the septic tank is set as the settling tank portion, and The upper part is provided in a two-stage structure to be part of the oxidizing tank, so that the ceiling of the settling tank has a three-dimensional structure which also serves as the bottom of the oxidizing tank, so that the settling tank does not necessarily come into contact with air, and the oxidizing tank described above. And in the sedimentation tank, a contact filtration device in a urine purification tank having a configuration in which a tower in which contact medium is put is filled.

The volume of the urine septic tank to which the contact filtration device of the present invention is applied is usually 1.5 m 3 (0.1 m 3 per person increase) when the scale is 5 persons, and the area is about 1.5-2.5 m 2 (0.1 m 2 per 1 increase). In addition, a ceiling odor exhaust pipe and a disinfection tank are combined.

In the urine purification tank having such a structure, in order to improve the filtration and purification function of the urine, the present invention newly adds the filtration and purification function by the anaerobic fixed biofilm method, The contact media contained in the towers filled in the settling tanks and the oxidizing tanks subjected to the first and second treatments can be easily obtained, and at the same time, the towers filled with such contact media can be easily added to the conventional urine septic tank. The present invention provides an apparatus that can solve the problems in the conventional urinary septic tank as described above.

The anaerobic fixed biofilm method is a new idea that puts a filling in a sedimentation tank with poor air circulation or poor air flow, for example, by filling a mixture of media having various sizes and different weights in a watchtower, such as a synthetic resin, for the entirety of the media. By filling the contact medium filler in the sedimentation tank with a specific gravity of slightly lighter than water, biofilms, such as anaerobic bacteria, are formed on the surfaces of these mediators, and they are brought into contact with these mediators by the decomposition action of bacteria or the like forming these biofilms. It is to be filtered and purified of the urine.

As a filter medium filled in the tower, natural products such as pumice, oyster shells and corals, vinyl chloride resin products heavier than water, polyethylene resin molded products and foamed styrofoll, and waste or wood shredding products To use.

EXAMPLE

Next, embodiments of the present invention will be described in more detail with reference to the drawings.

First, in Fig. 1, reference numeral 1 preferably has a mesh of several centimeters of a synthetic resin material which does not rot in normal sewage as a tower, and the capacity of one tower is for transportation or in the tank. Or it is decided in consideration of the convenience at the time of taking out, and what is before and after 10 liters (1) is preferable normally. Reference numeral 2 denotes a contact medium filled in the tower, and as described above, the material having a property of dissolving in water is roughly similar to the specific gravity of water. (3) is foamed styropol, especially to control specific gravity. (4) is a crushed product of a wood system, (5) is a molded article made of vinyl chloride with a heavier specific gravity than water. In manufacturing the tower 1, first, a suitable amount of the contact medium 2 is placed in the tower 1, and then the foamed styropol 3, the wood-based shredded product 4 and the molded vinyl chloride product 5 are appropriately added. It is made so that the parenthesis of the whole tower becomes approximately 0.9. If the specific gravity is heavier than 0.9, the dosage of the foamed styropol 3 is increased, and if the specific gravity is lighter than 0.9, the specific gravity can be controlled by increasing the dosage of the vinyl chloride molded article 5.

Each of these fillers (2), (3), (4), and (5) has any shape such as a block (lump), a normal shape, a rod shape, or a branch shape. It is also possible to use and may destroy the general molding.

In FIG. 2, (6) is the inlet, (7) is the drain, (8) is the manhole of the inlet, and is installed in the first chamber settling tank, and (9) from the second chamber settling tank. Outflow part manhole (10) is an opening 11 leading from the manhole (9) to the oxidation tank, the partition wall (12) is the oxidation tank of the water channel on the front and back of 50 cm In this case, two to four may be installed as necessary. In the case where a plurality of channels are provided, the lower partition 11 may be added in accordance with the number of channels required.

In addition, when the contact medium filling table 13 is introduced into the oxidizing tank 12 as many times as necessary, and the position of the drain port 7 is set 20 cm higher than the height of the bottom surface of the oxidizing tank 12, The oxidation tank 12 is a contact filtration tank of 20 cm depth.

Reference numeral 22 is an opening.

FIG. 3 is a cross-sectional view of the contact filtration apparatus of the present invention shown in FIG. 2, in which FIG. 14 is a bottom, 15 is a lid, 16 is a sedimentation tank, and 17 is a horizontal partition plate. This serves as the ceiling of the settling tank 16 and the bottom of the oxidizing tank 12 which is a planar oxidation tank. Reference numeral 18 is a side wall of the brew, and 19 is a odor exhaust pipe.

Also in the sedimentation tank 16, a contact filter filling table 13 filled with a contact filter is introduced.

The contact medium filling table 13 introduced into the sedimentation tank 16 is lighter in specific gravity than water, and these are simply filled in the manholes 8 and 9 in a floating state below the horizontal partition plate 17. can do.

If the input amount of the contact medium charging station 13 is determined so that the gap between the lower part of the contact medium charging station 13 in the floating state and the bottom surface of the settling tank 16 allows the work to pump out the sludge in the settling tank 16. For example, in the case of collecting by a vacuum cleaner, even if filling the contact medium filler to the bottom of the sedimentation tank 16, there is no problem. It is preferable to leave about 10 cm blank.

Next, the operation of the contact filtration device of the present invention will be described. From the toilet (not shown) installed in the toilet or the like, the urine is introduced into the purification apparatus of the present invention through the inlet 6 shown in FIG. 2, and through the manhole 8, the sedimentation tank shown in FIG. 16) flows into.

As described above, a contact medium filler 13 is introduced into the settling tank 16, and a fixed biofilm in which anaerobic bacteria or the like is inhabited is formed on the surface of the contact medium filled in the packed station. The urine is filtered by contacting with the contact media 2 and the like while passing between these charging zones 13, and at the same time by the decomposition action of anaerobic bacteria formed of the fixed biofilm on these media 2, that is, anaerobic fixation. Purified by the biofilm method.

In this way, primary purification treatment such as urine is performed. As the inflow of the urine lamp increases, the level of the urine lamp in the sedimentation tank 16 becomes high, and when the level of the inflow of the urine light reaches the horizontal partition board 17 which is the ceiling of the sedimentation tank 16, the sedimentation tank 16 The urine and the like filtered and purified by the action of the contact medium and the anaerobic fixed biofilm method flow into the oxidizing tank 12 provided on the immersion furnace 16 through the manhole 9 and the opening 10.

As described above, the contact medium charge zone 13 is also introduced into the oxidizing tank 12, and the specific gravity of the entire contact medium charge station 13 is most suitable for use as being heavier than water.

Since the oxidizing tank 12 is open to the atmosphere through the odor exhaust pipe 19 or the like, new air can always be flowed through the oxidizing tank 12.

Therefore, aerobic bacteria and the like inhabit on the surface of the contact medium 2 in the contact medium charge zone 13 introduced into the oxidizing tank 12 to form an aerobic fixed biofilm.

The urine, etc., first purified in the sedimentation tank 16, introduced through the manhole 9 and the opening 10, move in the oxidation tank 12 in the direction indicated by the arrow in FIG. In the meantime, in contact with the contact media and the like in the contact media charge zone 13, the filter media is again subjected to filtration, and at the same time, the decomposition of the aerobic bacteria of the fixed biofilm formed on these contact media 2 and the oxygen in the air. By the oxidation by it will be purged again.

In this way, secondary purification processing such as urine is performed. Bacterial Anaerobic Bacteria and Aerobic Bacteria in Primary and Secondary Purification Processes Decomposed by completely different bacteria from each other, which completely decomposes various organic matters and odor elements contained in urine, etc. Processing becomes possible.

In this way, the treated water subjected to the secondary purification is discharged to the outside of the septic tank through the opening 22 and the drain port 7.

In this way, by filling the contact medium filling table 13, in the single treatment septic tank, the BOD removal rate, which previously reached 55%, is increased to 65%, and in the combined treatment septic tank, the removal rate that has reached 20% is increased. It rises to 30-40%, and the BOD removal efficiency of the oxidizing tank is about 20%, which is as bad as 60%, and it becomes possible not only to make the average water quality less than 60 ppm of BOD alone or in combination. Clogging problems can also be solved.

In other words, clogging phenomenon is that sludge is deposited between the fixed biofilm and the media, so that it is impossible to pass through the urine, and such clogging can be easily removed or not.

In the present invention, the clogging phenomenon can be prevented by arbitrarily adjusting the size and shape of the fillings filled in the tower 1 to be used, by arbitrarily adjusting the gap between each other and the interval of each of the towers 1. The filter pad can be formed simply by utilizing features that are lighter than water, and in the worst case, the clogging problem can be easily solved by removing only a few towers and washing or stirring the tank.

The term " clogging phenomenon " as used herein refers to a phenomenon in which not only the net eye of the net, but also the space between the media and the media are blocked by deposits such as urine, which makes passage of new urine impossible.

FIG. 4 removes the lid 15 of the septic tank of FIG. 3 and coats it with soil. In the embodiment of FIG. 3, a net 20 is installed instead of the lid 15 and the odor exhaust pipe 19. By covering the soil 21 thereon, the infiltration and deodorization of the treated water are made by the soil 21.

In the above embodiment of the present invention, in consideration of the minimization of the installation area of the septic tank and the utilization of the existing septic tank, only the two-layer structure in which the oxidizing tank 12 and the settling tank 16 are disposed up and down has been described. In the septic tank which is not concerned with a septic tank or an area, these oxidation tank 12 and the sedimentation tank 16 may be provided separately, and it may manufacture in parallel.

The anaerobic fixed biofilm method newly introduced in the present invention is a well-known technique already widely used in methane fermentation apparatus in fermentation engineering, etc. It is a well-known theory that its purification function is high, but it was difficult to use it in The reason was because of countermeasures against deodorization and clogging.

However, for the deodorization problem, since the present invention has already been developed by the present inventors, the main focus is placed on preventing clogging and improving the purification function.

In addition, in the present invention, as a contact medium, an inexpensive material that can be easily obtained by a simple operation such as simply crushing most existing objects such as waste or natural matter or identifying a particle size is used. Because of that, its commercial value is higher.

The underlying bio-principle is that the sewage biota is in a complex relationship unpredictable by current knowledge by the material and particle size to which the organism is fixed or adhered. The more complicated and the more complicated the biome, the higher the purification efficiency and the smaller the amount of sludge generated by the plant chain (feed chain).

Therefore, the present invention may be regarded as a system method that faithfully keeps the origin of biology, and corresponds to a novel technical concept that cannot be thought of in a factory productive concept aimed at simplifying and culminating modern society.

Moreover, contact media can be produced by putting various shreddings in the watchtower with a slightly lighter specific gravity than water, and these media can be used for waste, natural products or factory products, if necessary. At the same time as the work is being done, the added value is increased, and the effect that it is possible to make an important contribution to the relief of the welfare of the world can be obtained.

When enumerated the range that can immediately apply the idea of the present invention as follows.

end). Simple improvement of the already installed septic tank, such as F.R.P agent and concrete agent, is attained.

I). In the standardized products of the soil type F.R.P septic tank, the method of raising the discharge level to about 40cm above the G.L is possible by removing the lid and the odor discharge pipe.

All). When used in combination with various treatment apparatuses for plant drainage, the treatment water quality can be improved and surplus sludge reduction can be achieved.

Claims (1)

In the urine purification tank capable of inflow and outflow of urine, a horizontal partition plate 17 is formed in the center of the urine purification tank so that the oxidation tank 12 and the precipitation tank 16 are divided up and down, and in the precipitation tank 16. Is made by mixing natural products such as pumice, shell shell, coral, polyvinyl chloride resin products, polyethylene resin molded products, foamed styropol, waste or wood shredded products, so that the specific gravity of these contents is controlled to be smaller than water. A plurality of charging stations 13 including (2) are built-in, and in the oxidizing tank 12, natural products such as pumice, shell shells, corals, vinyl chloride resin molded products, polyethylene resin molded products, and foamed styropol , A mixture of waste or wood shreds, containing a plurality of charging stations (13) containing contact filters (2) adjusted so that the specific content of these contents is equal to or greater than water. Contact filtration equipment of the tank to the sinyo characterized.

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