JP2005262077A - Night soil treatment apparatus and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a night soil treatment apparatus which can treat purified water of night soil without discharge. <P>SOLUTION: In the night soil treatment apparatus where the night soil is introduced into a horizontal perforated pipe 3b in the vicinity of the surface of a soil layer 3a in a soil treatment tank 3, and capillary penetrated into soil from the perforated pipe 3b to be purified, a reflux pipe 4, which extends from the inner bottom 3c of the soil treatment tank 3 into the soil layer 3a or to the surface of the soil layer 3a, is installed. The horizontal pipe part 4a of the reflux pipe 4 is exposed on the surface of the soil layer 3a to be used as a water sprinkling pipe 4b, or is arranged nearer to the surface than the perforated pipe 3b, and near the perforated pipe 3b in parallel with the perforated pipe 3b to be used as a water spout pipe 4d. The purified water on the inner bottom 3c of the soil treatment tank 3 flows out from a number of spouts formed in the side of the horizontal pipe part 4a, and nitrogen is gasified during capillary migration in the soil to be evaporated from the surface. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a manure treatment apparatus and a manure treatment method useful in an area where no discharge is required, such as a water source recharge forest, or an area where partial discharge is possible.

In Japanese Patent Application Laid-Open No. 11-33575, the applicant of the present application proposes a toilet system for treating urine circulation using soil in a place where electricity can be used, and Japanese Patent Application Laid-Open No. 2000-42579 discloses a system of the same type in a place where electricity cannot be used. is suggesting.
However, if these two systems are used, the amount of urine and stool liquefaction will increase, so it is inevitable that the total amount of water will increase.
In this system, the soil treatment tank, which is the main treatment part, was installed outdoors to receive rainwater, and the purified water diluted with rainwater was discharged, or the purified water was given as liquid fertilizer to nearby vegetation.
The purified water purified by this soil is colorless and transparent and has a very low BOD value, but contains nitrate and nitrite nitrogen at a concentration of about 50 to 100 ppm. In normal places, toilet bowls are washed with this purified water, and the fertilizer effect is used to make flower beds and fields in the vicinity. However, the nitrogen content in water source recharge forests close to the water source of the forest is as small as possible. You are required to do something that does or does not come out at all.
JP-A-11-33575 JP2000-42579

  Problems to be solved are, firstly, a manure treatment apparatus capable of processing purified urine water without discharge, and secondly, even when the discharge of purified water cannot be avoided, nitrogen Thirdly, a human waste treatment device that can be discharged with an extremely small load, and thirdly, a human waste treatment device that has a high processing capacity and can be arranged so as not to damage the scenery of the installation location. Fourthly, an object of the present invention is to propose a manure treatment method capable of treating purified water of manure without discharge.

In order to achieve the above-described problems, the present invention is characterized in that the manure processing apparatus has the following configuration.
1. In the sewage treatment apparatus in which the sewage is guided to a horizontal porous tube near the ground surface in the soil layer in the soil treatment tank, and the sewage is permeated into the soil through the porous tube to purify it, It has a reflux pipe extending from the inner bottom to the soil layer or to the ground surface of the soil layer, and the horizontal pipe portion of the reflux pipe is exposed to the ground surface of the soil layer to form a water spray pipe or from a porous pipe Near the ground surface and in parallel near the perforated pipe to form a water discharge pipe, and the purified water at the inner bottom of the soil treatment tank flows out from the numerous water outlets provided on the side of the horizontal pipe section into the soil. During the capillary movement, the nitrogen content is gasified and evaporated from the ground surface.

That is, the present invention pays attention to the phenomenon that when nitrogen in a nitrate state encounters denitrifying bacteria under low oxygen conditions, it will easily become nitrogen gas as long as it has carbon, and gathers at the inner bottom of the soil treatment tank. It was discovered that the purpose can be achieved by once again introducing purified water closer to the ground of the soil layer than the horizontal perforated pipe, and closer to the perforated pipe.
And since the filth in the toilet bowl is desired to have a concentration of 1% or more of organic matter that is easily decomposed by anaerobic bacteria, a simple flush toilet with a wash water amount of about 300 cc is suitable for the toilet bowl. In the simple flush toilet, the filth is diluted with an appropriate amount of washing water, so the BOD is 2000 to 3000 ppm, and the microorganisms in the soil are most easily propagated, so to speak, urine is rich in food.
The apparatus in this case is a small amount of washing, except for flush toilets that are diluted with a large amount of wash water and the soil BOD is too low to be suitable for the propagation of soil microorganisms, and flush toilets that have a waste BOD of 8000 to 15000 ppm too high. A simple flush toilet that allows the ball surface to be washed with water, and a simple soil wash tank that has a continuous soil treatment tank through the toilet tank, and the urine from the toilet tank is in the soil layer in the soil treatment tank. In a human waste treatment apparatus which is guided to a nearby horizontal perforated pipe and purifies the human waste through capillary penetration into the soil from the perforated pipe, in the soil layer or on the surface of the soil layer from the inner bottom of the soil treatment tank The horizontal pipe portion of the return pipe is exposed to the ground surface of the soil layer to form a water spray pipe, or is closer to the ground surface than the perforated pipe and parallel to the perforated pipe. In From the ground surface, purified water from the inner bottom of the soil treatment tank flows out from the numerous water outlets on the side of the horizontal pipe part, and nitrogen is gasified during capillary movement through the soil. It is configured to evaporate.

The contents of the manure-decomposed water decomposed in the stool contain a lot of organic acids, mainly acetic acid and propionic acid, and ammonia nitrogen based on urine, in addition to washing water. Most of the stool is methane gas and carbon dioxide in the stool, but the remaining organic matter and organic acid are capillary-moved into the soil from the horizontal porous tube of the soil treatment tank along with ammoniacal nitrogen. The characteristics of the soil are that various microorganisms in the soil decompose organic substances, and at the same time, many nitrites and nitrites living in the soil grow rapidly in the aerobic part of the soil surface, and ammonia nitrogen is converted into nitrous acid. Change to nitrate nitrogen. This nitric acid and nitrite nitrogen move down the capillaries through the soil, and some of them are converted to nitrogen gas by the action of denitrifying bacteria in the soil, but a considerable amount of purified water is converted to nitric acid and nitrous acid. And accumulates in the bottom of the soil treatment tank.
Therefore, in order to denitrify the purified water containing a lot of nitrate nitrogen, the purified water collected at the inner bottom of the soil treatment tank is once again very shallow on the surface of the soil layer, just above the horizontal porous tube. Nitrate is reduced to nitrate nitrogen by using the phenomenon that when nitrogen is converted to nitrogen, it becomes nitrogen gas easily if there is carbon content when it encounters denitrifying bacteria under low oxygen conditions. By repeating this purification water circulation, the nitrogen content at the time of discharge is reduced as much as possible.

The purified water is denitrified under the action of denitrifying bacteria in the soil while descending together in the soil using BOD in the urine from the horizontal porous tube as the carbon source. Ammonia nitrogen contained in the excreta flowing out of the horizontal porous tube descends into the soil (capillary movement), and is nitrated and nitrite under the action of nitrate bacteria and nitrite bacteria. In the relatively shallow aerobic part of the soil layer, other BOD (organic acid) gasifies quickly and lowers the BOD value, so the carbon source cannot be used, but the purified water returned to the soil layer is nitrated Nitrogen is denitrified by using BOD in manure that penetrates the capillary from the horizontal porous tube to the periphery.
Therefore, the positional relationship between the horizontal perforated pipe from which manure is discharged and the horizontal pipe part of the reflux pipe from which purified water comes out is located closer to the ground than the perforated pipe and parallel to the perforated pipe. That is, nitric acid and nitrite-purified water flowing out from the spout of the horizontal pipe part are denitrified by denitrifying bacteria in the soil while the capillary moves in the soil near the horizontal porous pipe. What is necessary is just to become the relationship of nitrogen gasification.

Such a denitrification system is suitable for water source reforestation areas that are not released by evapotranspiration. For that purpose, the simple flush toilet is effective. That is, since 200 cc or 200 g of urine and washing water and 300 cc of washing water per one time total 500 cc, it is possible to evaporate in a very small area. In addition, since the excreta penetrating the soil layer from the horizontal perforated tube is put in the soil near the ground surface, a considerable part is evaporated. It is desirable that the depth below the ground surface is about 10 cm. In addition, most of the purified water stored in the inner bottom can be evaporated by pumping it up into the soil near the ground surface by pumping it up even on a sunny day.
The purified water stored in the inner bottom contains nitrate nitrogen and has less odor and bacteria, so there is no problem in sprinkler spraying to the ground surface by pumping up timely. In this case, average annual soil surface evaporation is considered 3~5l / m ^2, are also possible total amount evaporated by designing slightly larger inner lower purified water with a small amount of nitric acid values very if the area is insufficient It is also possible to use a combined method in which the product is discharged from the bottom through a drain pipe. If you think about the piss amount of evaporation of one person one time 200cc, also sees 1m ² per 2l / day, 100 people on the surface of 10m ^2, it is possible to evaporation processing of 200 people in 20m ^2.

Therefore, the amount of purified water used for washing, for example, a simple flush toilet can be secured, and the surplus can be returned to the soil layer to evaporate, allowing a small amount of discharge for no-release water source recharge forests. Suitable for districts.
The purified water may be transferred with a manual pump, or may be operated only on a sunny day by solar power generation.
Moreover, since it is also possible to obtain cultured denitrifying bacteria these days, it is more effective if the soil layer is previously filled with anaerobic mat impregnated with bacteria.

2. In 1 mentioned above, the soil treatment tank has the drainage pipe which can flow out the purified water of an inner bottom part out of a tank, It is characterized by the above-mentioned.
Suitable for areas where a small amount of discharge is possible.

3. In 1 or 2 described above, the soil treatment tank is covered with a covering material in a state where a ventilation space is secured on the upper surface thereof.
The covering material may be a roofing material made of transparent plastic, or may be a plate deck material or the like, as long as it can secure a ventilation space on the ground of the soil layer. If the former, sunlight will pass through, so the evaporation of purified water will be promoted, and if the latter, it can contribute to the provision of a resting place and will not harm the landscape and is suitable for mountains, parks, etc. ing.

The manure treatment method of the present invention is characterized by the following configuration.
4). In the method for treating manure, the manure is introduced into a horizontal perforated tube near the surface of the soil layer in the soil treatment tank, and the manure is permeated into the soil through the porous tube to purify it. The purified water stored at the bottom is led from the inner bottom through the return pipe into the soil layer or on the surface of the soil layer, and then the purified water is fed from the water pipe formed by the horizontal pipe part of the return pipe to the soil layer. The purified water is sprinkled on the surface of the water or discharged from the water discharge pipe formed by the horizontal pipe section into the soil closer to the ground surface than the horizontal porous pipe and close to the porous pipe. It is characterized in that the nitrogen component is gasified and evaporated from the ground surface during capillary movement.
In addition, such a treatment system includes a simple flush toilet in which the ball surface can be washed with a small amount of flush water except a flush toilet and a flush toilet, and a simple soil flush tank via a toilet tank. A method for treating urine from a stool tank, which leads to the purification of the urine by introducing it into a horizontal porous tube near the ground surface in the soil layer of the soil treatment tank, and penetrating the urine into the soil from the porous tube. In this case, the purified water stored in the inner bottom portion of the soil treatment tank is guided from the inner bottom portion through the return pipe into the soil layer or on the ground surface of the soil layer. Purify the purified water from the water pipe to the surface of the soil layer, or discharge the purified water from the water discharge pipe formed by the horizontal pipe section into the soil closer to the ground surface than the horizontal porous pipe and close to the porous pipe. As a result, purified water penetrates into the soil. Nitrogen content in the capillary movement may be configured that is to be evaporated from the surface being gasified.

A. According to claim 1, the purified water can be used for washing toilets such as simple flush toilets, and the excess can be returned to the soil layer and evaporated, which is useful for non-release water source recharge forest areas. It is.
B. Further, according to claim 2, even when the discharge of the purified water cannot be avoided, it is possible to discharge the nitrogen load as much as possible, which is useful for a district where a small amount of discharge is possible.
C. According to the third aspect of the present invention, a ventilation space can be secured on the ground of the soil layer. Therefore, ventilation is good, a considerable evaporation force is obtained, and no discharge can be contributed.
And if the covering material is a roofing material made of transparent plastic, the sunlight will be transmitted, so the evaporation of purified water will be promoted, and if the covering material is a boarded deck material, a resting place It is useful for mountains and parks without harming the scenery.
D. According to claim 4, the amount of purified water used for washing toilet bowls such as simple flush toilets is ensured, and the surplus is returned to the soil layer and evaporated, which is useful for non-release water source recharge forest areas. It is.

FIG. 1 and FIG. 2 exemplify a manure treatment apparatus configured in combination with a simple flush toilet and a toilet bowl as an embodiment of the manure treatment apparatus of the present invention, and the ball surface can be washed with a small amount of washing water. The simple flush toilet 1 and the simple flush toilet 1 have a continuous soil treatment tank 3 through a toilet tank 2.
The urine composed of large and small urine and washing water that have flowed out of the simple flush toilet 1 flows into the first septic chamber 2a in the toilet tank 2, and then sequentially flows from the first septic chamber 2a into the second septic chamber 2b. Later, it is sucked up by the submersible pump 2c in the second septic chamber 2b and led from the same chamber to the horizontal porous tube 3b near the ground surface in the soil layer 3a in the soil treatment tank 3, and the outlet on the side surface of the porous tube 3b In this way, the water is purified in the process of penetrating into the soil into the soil and descending to the inner bottom 3c of the tank bottom, and the purified water is stored in the inner bottom 3c.

The soil treatment tank 3 is provided with a reflux pipe 4 extending from the inner bottom 3c to the ground surface of the soil layer 3a. The horizontal pipe portion 4a in the reflux pipe 4 is formed of the soil layer 3a. It is exposed on the surface of the earth and serves as a sprinkling pipe 4b. The purified water in the inner bottom part 3c is sucked up by the submersible pump 4c in the inner bottom part 3c and sprayed to the ground surface of the soil layer 3a from the many spouts provided on the side surface of the horizontal pipe part 4a. Water is formed so that nitrogen is gasified and evaporated from the ground surface during capillary movement in the soil.
Further, the inside of the inner bottom portion 3 c and the simple flush toilet 1 are connected by a water supply pipe 5, which is branched from the reflux pipe 4 and connected to the water storage tank 1 a of the simple flush toilet 1. The amount of cleaning water used for cleaning is supplied. Switching between water supply to the water spray pipe 4b and water supply to the water storage tank 1a is performed by a switching valve 6 disposed at the branch portion.

On the ground surface of the soil layer 3a in the soil treatment tank 3, a roofing material 7 made of transparent plastic is covered, and sunlight is transmitted by securing the ventilation space 8 on the ground surface of the soil layer 3a. The surface of the earth is heated so that the evaporation of purified water is promoted.
Further, by connecting a water collecting tank 9 to the soil treatment tank 3, unnecessary purified water is collected in the water collecting tank 9 by a collecting pipe 11 branched from the reflux pipe 4 through a switching valve 10, and a drain pipe 12 of the same tank is collected. It can be discharged from.
The submersible pumps 2c and 4c and the switching valves 6 and 10 communicate with a control device (not shown), and are operated in a timely manner by receiving power supply from the solar panel 13.

Thereby, the amount of purified water used for the washing of the simple flush toilet 1 is secured, and the excess purified water is sprayed from the sprinkling pipe 4b and is returned to the soil layer 3a to be evaporated.
Furthermore, by operating the switching valve 10 so that the purified water does not flow into the water collection tank 9, the operation is performed without discharge, in which the purified water is processed without being discharged to the outside. In addition, by operating the switching valve 10 so that the purified water flows into the water collection tank 9, the operation is a small amount discharge operation in which the purified water is partially discharged and processed.
Such a non-discharge operation and a small amount of discharge operation can be performed by controlling the switching valve 10 as described above.

FIG. 3 and FIG. 4 illustrate another embodiment of the urine processing device constructed in combination with a simple flush toilet and a toilet bowl as an embodiment of the urine processing device of the present invention. The ball surface is covered with a small amount of cleaning water. A simple flush toilet 1 that can be washed, and a simple soil flush tank 1 through a toilet tank 2 are provided in the simple flush toilet 1.
The urine composed of large and small urine and washing water that have flowed out of the simple flush toilet 1 flows into the first septic chamber 2a in the toilet tank 2, and then sequentially flows from the first septic chamber 2a into the second septic chamber 2b. Later, it is sucked up by the submersible pump 2c in the second septic chamber 2b and led from the same chamber to the horizontal porous tube 3b near the ground surface in the soil layer 3a in the soil treatment tank 3, and the outlet on the side surface of the porous tube 3b In this way, the water is purified in the process of penetrating into the soil into the soil and descending to the inner bottom 3c of the tank bottom, and the purified water is stored in the inner bottom 3c.

The soil treatment tank 3 is provided with a reflux pipe 4 extending from the inner bottom 3c to the ground surface of the soil layer 3a. The horizontal pipe portion 4a of the reflux pipe 4 is more than the porous pipe 3b. The water discharge pipe 4d is arranged in parallel near the ground surface and near the porous pipe 3b. The purified water in the inner bottom portion 3c is sucked up by the submersible pump 4c in the inner bottom portion 3c and discharged into the soil of the soil layer 3a from a number of water outlets provided on the side surface of the horizontal pipe portion 4a. The purified water is formed so that nitrogen content is gasified and evaporated from the ground surface during capillary movement in the soil.
Further, the inside of the inner bottom portion 3 c and the simple flush toilet 1 are connected by a water supply pipe 5, which is branched from the reflux pipe 4 and connected to the water storage tank 1 a of the simple flush toilet 1. The amount of cleaning water used for cleaning is supplied. Switching between water supply to the water discharge pipe 4d and water supply to the water storage tank 1a is performed by a switching valve 6 disposed at the branch portion.

On the ground surface of the soil layer 3a in the soil treatment tank 3, a plastic or wood deck 14 is covered, and by securing the ventilation space 8 on the ground surface of the soil layer 3a, evaporation of purified water can be performed. To be promoted. If the deck 14 is made of translucent plastic, the sunlight is transmitted and the ground surface is heated, and the evaporation of purified water is further promoted.
Further, by connecting a water collecting tank 9 to the soil treatment tank 3, unnecessary purified water is collected in the water collecting tank 9 by a collecting pipe 11 branched from the reflux pipe 4 through a switching valve 10, and a drain pipe 12 of the same tank is collected. It can be discharged from.
The submersible pumps 2c and 4c and the switching valves 6 and 10 communicate with a control device (not shown), and are operated in a timely manner by receiving power supply from the solar panel 13.

Thereby, the amount of purified water used for washing the simple flush toilet 1 is secured, and the excess purified water is discharged from the water discharge pipe 4d and recirculated into the soil layer 3a to be evaporated.
Furthermore, by operating the switching valve 10 so that the purified water does not flow into the water collection tank 9, the operation is performed without discharge, in which the purified water is processed without being discharged to the outside. In addition, by operating the switching valve 10 so that the purified water flows into the water collection tank 9, the operation is a small amount discharge operation in which the purified water is partially discharged and processed.
Such a non-discharge operation and a small amount of discharge operation can be performed by controlling the switching valve 10 as described above.

  Although not shown in the drawings, the manure treatment apparatus shown in FIGS. 1 and 2 may be configured without the water collection tank 9, and in this case, the non-discharge operation for treating the purified water without draining it to the outside at all. It becomes a dedicated type.

The longitudinal cross-sectional view which illustrates one Embodiment in the manure processing apparatus of this invention. (2)-(2) Enlarged longitudinal sectional view of FIG. The longitudinal cross-sectional view which has illustrated one other form of implementation in the manure processing apparatus of this invention. (4)-(4) enlarged vertical sectional view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Simple flush toilet 1a Water storage tank 2 Toilet tank 2a 1st septic chamber 2b 2nd septic chamber 2c, 4c Submersible pump 3 Soil treatment tank 3a Soil layer 3b Horizontal porous pipe 3c Inner bottom part 4 Reflux pipe 4a Horizontal pipe part 4b Scattering Water pipe 4d Water discharge pipe 5 Water supply pipe 6, 10 Switching valve 7 Roofing material (covering material)
8 Ventilation space 9 Catchment tank 11 Collection pipe 12 Drain pipe 13 Solar panel 14 Deck (covering material)

Claims (4)

  In a human waste treatment apparatus in which human waste is guided to a horizontal porous tube near the ground surface in the soil layer in the soil treatment tank and the human waste is purified by penetrating into the soil from the porous pipe. It has a reflux pipe extending from the inner bottom to the soil layer or to the ground surface of the soil layer, and the horizontal pipe portion of the reflux pipe is exposed to the ground surface of the soil layer to form a water spray pipe or from a porous pipe Near the ground surface and in parallel near the perforated pipe to form a water discharge pipe, and the purified water at the inner bottom of the soil treatment tank flows out from the numerous water outlets provided on the side of the horizontal pipe section into the soil. An apparatus for treating manure, wherein nitrogen is gasified and evaporated from the ground surface during capillary movement.   2. The excreta treating apparatus according to claim 1, wherein the soil treatment tank has a drain pipe capable of draining the purified water at the inner bottom to the outside of the tank.   3. The soil treatment apparatus according to claim 1, wherein the soil treatment tank is covered with a covering material in a state in which a ventilation space is secured on the upper surface thereof.   In the method for treating manure, the manure is introduced into a horizontal perforated tube near the surface of the soil layer in the soil treatment tank and purified by penetrating the manure into the soil through the porous tube. The purified water stored at the bottom is led from the inner bottom through the return pipe into the soil layer or on the surface of the soil layer, and then the purified water is fed from the water pipe formed by the horizontal pipe part of the return pipe to the soil layer. The purified water is sprinkled on the surface of the water or discharged from the water discharge pipe formed by the horizontal pipe section into the soil closer to the ground surface than the horizontal porous pipe and close to the porous pipe. A method for treating human waste, wherein nitrogen is gasified and evaporated from the ground surface during capillary movement.

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