JPH02218498A - Packing body for purifying tank - Google Patents

Abstract

PURPOSE:To prevent the clogging of a packed bed and to effectively hold the contact of bacteria with a packing material for a long time by filling at least a part of a packing body with a bacteria metabolite or humus containing a specific compound and together providing a buoyance adjusting part. CONSTITUTION:The org. substance contained in waste water is flocculated by the action of a bacteria metabolite containing phenol and/or a compound having a phenol exposing group in the first reaction tank 2. The org. substance thus flocculated to be formed into sludge flows in the second reaction tank 3 to be brought into contact with the bacteria metabolite such as phenol or the like and becomes macromolecular to be sedimented in a sedimentation tank 4. A packing body is present in such a state that a floating type packing body 10, a migration type packing body 11 and a sedimentation type packing body 12 are mixed and moved along with water and sludge fluidized by the air stream discharged from the aeration apparatus 9 provided to the lower part of the tank and prevented from clogging.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a packing for septic tanks, and more particularly, it relates to a packing for a septic tank, and more particularly, it is used to treat wastewater containing organic matter, and is used to fill a packing body containing phenol and/or a compound with a phenol-exposed group. The present invention relates to a packing for a septic tank that utilizes microbial metabolites or humic plants.

(Prior Art) In order to prevent river pollution, many septic tanks are being installed to treat wastewater such as household wastewater and livestock wastewater.

Such conventional septic tanks usually employ a sewage treatment method based on an activated sludge method, which aims to decompose organic matter in wastewater to convert it into low-molecular-weight molecules and gasify it.

Such septic tanks have the basic problem of not having sufficient ability to remove organic matter and emitting odors.

In order to solve this problem, in JP-A-61-33297 and JP-A-61-260880, wastewater containing organic substances and microbial metabolites containing phenol and/or compounds with exposed phenol groups, etc. A processing method has been proposed that mixes the two.

According to this method, by physicochemically reacting organic substances in wastewater with microbial metabolites, formation of macromolecules including bonding, granulation, vertical formation, condensation, and polymerization, and formation of fine sludge can be achieved. By inducing giant size and separating it into solid and liquid, wastewater can be easily purified without generating any odor.

The present inventor previously disclosed in Japanese Patent Application No. 62-257788 a septic tank as a small- and medium-sized septic tank that can efficiently carry out the above-mentioned treatment method and can be applied to residential complexes or small-scale sewage systems. We proposed that a packed bed filled with microbial metabolites or humic plants containing phenol and/or compounds with phenol-exposed groups be fixed in advance in areas that come into contact with wastewater within the plant.

(Problems to be Solved by the Invention) According to the septic tank previously proposed by the present inventor, aerobic bacteria and facultative anaerobic bacteria, which are the most common soil bacterial groups in wastewater and sludge, or contact with a filling made of a microbial metabolite or humic plant containing a compound with a phenol-exposed group (hereinafter sometimes referred to as a filler of phenol, etc.), and the metabolite contains phenol and/or a phenol-exposed group. Being adapted to contain certain compounds facilitates the extraction of microbial metabolites containing phenols and/or compounds with phenol-exposed groups.

As a result, the wastewater treatment function is maintained and promoted.
Wastewater treatment can be carried out efficiently.

However, according to the method of fixing a packed bed filled with a filler such as phenol in advance to the part of the septic tank that will come into contact with wastewater,
The packed bed may become clogged with sludge etc. in a relatively short period of time.

By the way, if such a packed bed is clogged, aerobic bacteria and facultative anaerobic bacteria will not come into contact with the filling such as phenol, and the bacteria may not be able to acclimatize easily. It is necessary to perform the cleaning cycle Jtll in a relatively short period of time.

Therefore, an object of the present invention is to prevent a packed bed filled with a filler such as phenol from clogging in a relatively short period of time, and to prolong the contact between aerobic bacteria and facultative anaerobic bacteria and the filler. It is an object of the present invention to provide a filling body for a septic tank that can be effectively maintained for a long time.

(Means for Solving the Problems) The possibility that the septic tank packing body will be clogged with sludge or the like in a relatively short period of time can be prevented by the septic tank packing body of the present invention having the following configuration.

That is, the present invention provides a plurality of packing bodies that are provided without being fixed at a site in contact with wastewater in a septic tank, and at least a portion of the packing bodies contain phenol and/or a compound having a phenol-exposed group. This is a filling body for a septic tank, characterized in that it is filled with microbial metabolites or humic plants containing a buoyancy adjustment section.

In the present invention, the filling body is filled with the microbial metabolite or humic plant, and the filling body is filled with crushed stone containing activated silicic acid such as andesite or rhyolite. When used in combination with sludge, the settling properties of sludge in the septic tank will be extremely good, and solid-liquid separation will be easy.

In addition, multiple packing bodies float, migrate, and
Alternatively, in the case where sedimentary filling bodies are mixed, the filling bodies can easily move according to the movement of waste water, so that clogging of the filling bodies can be further prevented.

In the present invention, the term "compound with a phenol exposed group" refers to an organic compound having a phenol exposed group,
Enzymes with exposed phenol groups are particularly effective.

Furthermore, the term "activated silicic acid content" refers to an unstable substance having an andesitic or rhyolitic composition and having a high activity such as volcanic glass.

(Function) According to the present invention, organic matter in wastewater is converted into macromolecules by contact with microbial metabolites containing phenol and/or a compound having a phenol-exposed base, and is precipitated as sludge in a septic tank.

Such sludge has relatively good sedimentation properties and does not stick to the surface of the packing body.

Furthermore, the filling body is provided without being fixed in the septic tank, and is also provided with a buoyancy adjustment section. Therefore, the filling body can easily change its position according to the movement of waste water, and clogging of the filling body can be prevented.

(Example) The present invention will be explained using the drawings.

FIG. 1 is a sectional view of a septic tank using the packing body of the present invention, in which wastewater flows from the wastewater inflow vibro to the first reaction tank 2 of the septic tank.
Clear water flows through the second reaction tank 3, settling tank 4, and discharge tank 5, and is discharged from the discharge pipe 17.

In addition, 14 in FIG. 1 is a liquid feeding pipe for feeding waste water from the first reaction tank 2 to the second reaction tank 3.

In such a septic tank, the sludge precipitated in the settling tank 4 is returned to the sludge culture tank 1 through the sludge return pipe 13 along with some water. For example, an air pump (
An air lift structure operated by a motor (not shown) is adopted.

The parts of the sludge culture tank 1 and the first and second reaction tanks 2.3 that come into contact with wastewater are filled with a plurality of packing bodies filled with fillers such as phenol, andesitic, rhyolitic, etc. Crushed stone containing activated silicic acid (hereinafter referred to as crushed stone containing activated silicic acid).

A plurality of filling bodies each filled with (sometimes) are provided without being fixed to each other.

The plurality of packing bodies have a substantially spherical outer shape, and in the sludge culture tank 1 and the first reaction tank 2, in order to improve the contact between the packing bodies and wastewater and to prevent the filling bodies from flowing out, A punching brake provided in the wastewater is inserted into a hole surrounded by a perforated plate 8.8' and the inner wall of the tank.

In addition, in the second reaction tank 3, in order to prevent the filling material from flowing out from the connection part with the sedimentation tank 4 at the bottom of the tank, a perforated plate 8 is provided diagonally against the inner wall of the tank so as to block the connection part. ing.

Among these packing bodies, the dirt culture tank 1 and the first reaction tank 2
The filling bodies 10 are mainly floating near the upper perforated plate 8, and the filling bodies 12 are mainly floating near the lower perforated plate 8'.
It is settling in the vicinity of.

Further, the filling body 11 moves up and down between the perforated plates 8 and 8' according to the movement of waste water.

As shown in Figure 2, such a packing body is made of porous synthetic resin or rope, etc., and the inside thereof is filled with a filler such as phenol or crushed stone containing active silicic acid, and a buoyancy adjustment section is attached. This is what is being done.

(1) in FIG. 2 is a floating type shown as the filling body 1° in FIG. 1, and an air bag 20 is provided to give buoyancy to the filling body, It is of a settling type, shown as a filling body 12 in FIG. 1, and is provided with a sandbag 21 that applies a settling force to the filling body.

Moreover, (3) in FIG. 2 is a migratory type shown as the filling body 11 in FIG. It is.

The ratio of such packing bodies 101, 11, and 12 can be changed as appropriate depending on the properties of the wastewater, etc., and it is possible to use only the packing bodies 11 of the circulating type, such as in the second reaction tank 3. In the sludge culture tank 1 and the first reaction tank 2, a floating type packing body 10 and a settling type packing body 1 are used.
2 are approximately equal, and it is preferable that the number of migrating type filling bodies 11 be smaller than each of the above-mentioned filling bodies.

Furthermore, a packing body filled with fillers such as phenol (
Although the ratio of the filler A) to the filler filled with crushed stone containing active silicic acid (filler B) can be changed arbitrarily, it is preferable that the amount of filler A is larger than the filler B, and in particular It is preferable that the ratio of the body A and the filling body B be about 3:1.

In this embodiment, an aeration device 9 is provided at each lower part, and a packed bed 15 filled with crushed stone containing activated silicic acid, such as andesite or rhyolite, is provided in the settling tank 4. It is provided to ensure complete separation from sludge.

The wastewater flowing into the septic tank first passes through a winter tank or the like provided at a separate location to remove impurities, and then flows into the first reaction tank 2. The organic matter contained in the wastewater in the first reaction tank 2 is a microbial metabolite containing phenol and/or a compound with a phenol-exposed group in the wastewater (hereinafter sometimes referred to as a microbial metabolite such as phenol). and aggregates due to the action of activated silicic acid components.

The organic matter thus flocculated and turned into sludge flows into the second reaction tank 3, comes into contact with microbial metabolites such as phenol, activated silicic acid, etc. again, becomes macromolecules, and precipitates in the settling tank 4.

Microbial metabolites such as phenol are mainly supplied by the metabolism of aerobic bacteria and facultative anaerobic bacteria in wastewater.

In this way, in order to acclimatize the bacterial group to include phenol and/or a compound with a phenol exposed group in its metabolites, a packing body filled with a filler such as phenol is provided. Microbial metabolites are used to adjust the atmosphere in wastewater.

In this respect, each of the packing bodies in this embodiment moves together with the wastewater flowing by the air flow released from the aeration device 9 provided in each type, and there is no risk of clogging with sludge etc. Since the contact area is also widened, microbial metabolites such as phenol can be used sufficiently, and aerobic bacteria and facultative anaerobic bacteria contain phenol and/or compounds with phenol-exposed groups in their metabolites. You can get used to it well.

Furthermore, in this embodiment, the sludge settled in the settling tank 4 is sent to the sludge culture tank 1 via the sludge return pipe 13 together with some water.
After being cultured, the sludge is mixed into the wastewater through the sludge inflow hole 7 of the wastewater inflow vibro, and is returned to the first reaction tank 2.

In this sludge culture tank 1, a packing body filled with a filler such as phenol and a packing body filled with crushed stone containing activated silicic acid are provided in the tank, and the aerobic conditions in water and sludge are As mentioned above, the bacteria and facultative anaerobic bacteria are sufficiently acclimatized and the sludge itself is converted into macromolecules.

In this way, the bacteria group and macromolecularized sludge that have been sufficiently adapted are mixed into the wastewater that flows into the septic tank from the sludge inflow hole 7 of the wastewater vibro, so that the aerobic bacteria in the wastewater and the facultative anaerobic This can be done by acclimating the bacteria.

The packing bodies provided in this sludge culture tank 1 are also a mixture of floating type packing bodies 10, migrating type packing bodies 11, and settling type packing bodies 12, and are separated from the aeration device 9 provided at the bottom of the tank. It moves together with the water, sludge, etc. that flow due to the discharged air flow, and prevents the filling filled in the packing body from being blocked by the sludge, etc.

The amount of air ejected from the aeration device 9 of the sludge culture tank 1 is sufficient to agitate the water and sludge in the tank, and the valve 16 provided in the middle of the air piping to the aeration device 9 is sufficient to agitate the water and sludge in the tank.
The amount of air can be adjusted by

On the other hand, the first reaction tank 2, the second reaction tank 3,
The clear water that has passed through the settling tank 4 is discharged from the discharge tank 5. At this time, a disinfectant or the like may be added.

In addition, since the packed bed 15 filled with crushed stone containing activated silicic acid in the sedimentation tank 4 is provided to completely separate the sludge, if the sludge is sufficiently separated, There is no need to provide it.

Further, the septic tank in this embodiment is made of FRP and can be mass-produced, but it may also be made of concrete and prefabricated for easy assembly.

Further, the shape of the filling body is not limited to a spherical shape, but may be any shape, such as an elliptical sphere or a cube.

(Effects of the Invention) The septic tank filling body of the present invention is not easily blocked by sludge, etc. and can maintain good contact with wastewater for a long period of time, making it possible to lengthen the cleaning cycle of the septic tank and simplifying the maintenance of the septic tank. can do.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a septic tank using the septic tank filling body of the present invention, and FIG. 2 is a front view of the septic tank filling body of the present invention. In the figure, 1...sludge culture tank, 2, 3, 4, 10, 11, 12, 20, 21, first reaction tank, second reaction tank, sedimentation tank, floating type packing body, circulating type packing body , settling type packing, buoyancy adjustment section (air bag) buoyancy adjustment section (sandbag)

Claims (1)

[Scope of Claims] 1. A plurality of packing bodies provided without being fixed at a site in contact with wastewater in a septic tank, wherein at least a part of the packing bodies contains phenol and/or phenol-exposed groups. A filling body for a septic tank, characterized in that it is filled with a microbial metabolite containing a compound or a humic plant, and is also provided with a buoyancy adjustment section. 2. The filling body is filled with crushed stone containing activated silicic acid, such as andesite or rhyolite, and a microorganism containing phenol and/or a compound with a phenol exposed group. The filling body for a septic tank according to claim 1, comprising a filling body filled with a metabolite or a humic plant. 3. Multiple filling bodies float, migrate, and move in wastewater.
The filling body for a septic tank according to claim 1 or 2, wherein a filling body that settles or settles is mixed therein.