JPH0810781A - Bacteria adding device for septic tank - Google Patents

Abstract

PURPOSE:To make it possible to easily and effectively add useful bacteria to a septic tank by enclosing a bacterium holders which have plural small holes and are fermented by adding water thereto into a container and installing this container in the septic tank in such a manner that these small hole exist under the water surface of sewage. CONSTITUTION:This bacterium adding device A has a cylindrical container l of which the upper part is formed a wall-like part 1-1 and the lower part as a meshed part 1-2. Its bottom part 1-3 is provided with the plural small holes. The opening in the upper part of the container 1 is capped by a cover 2 having a knob 2-1. Buoyancy is imparted to the container 1 by fitting floats 3, 4 provided with a handle 4 onto the container. The bacterium holders, for example, the bacterium holders formed by mixing EM bacteria, rice sugar and chaff, fermenting the mixture and drying the mixture are housed in the container 1. Such bacterium adding device A is used by installing the device freely suspendably in the settling and separating chamber of the septic tank. The liquid contg. the bacteria is made to flow into the settling and separating chamber and the untreated feces, etc., in the settling and separating chamber are treated in accordance with the circulation of the sewage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a septic tank for biochemically treating sewage such as feces and human waste by utilizing the action of microorganisms, and more particularly to a device for easily adding useful microorganisms to the septic tank. .

2. Description of the Related Art Conventional septic tanks are composed of a precipitation separation chamber for separating and separating solid matter, a contact aeration chamber for contacting sewage from the precipitation separation chamber with a biofilm formed on the surface of a contact material, and a contact aeration tank. It consists of a settling chamber that separates the inflowing sewage into a supernatant and a settling sludge, and a disinfection chamber that adds disinfectant to the supernatant and flows sterilized purified water into a sewer.Even if useful bacteria are found, it is easy It was not possible to add such bacteria.

[0002]

The portion of human food that is not digested and absorbed is mostly light in specific gravity, and feces and paper that have once emerged rarely precipitate again. However, in conventional septic tanks, most of the feces have been treated as having a large specific gravity and a large proportion of sedimentation. In a conventional septic tank, it takes time to decompose and separate sedimentation of feces that have flowed into the sedimentation separation chamber due to bacteria, and the portion of feces with a low specific gravity is laminated on the liquid surface, including toilet paper. . As the days go by, the fecal layer becomes thicker, and the precipitation separation chamber becomes a state of covering the feces, and the contact between sewage and air is further reduced, thereby inhibiting the action of aerobic bacteria. The feces piled up in the tank gave off a unique odor, innumerable flies and maggots, and they also flew into the living room, which was not unsanitary. For this reason, the pumping companies are asked to clean once or twice a year, but the pumping fee is high and the amount of pumping is not enough, so we have to keep up with hygiene until the pumping companies come to us. It was

The inventor of the present invention has addressed the above problems by applying for a patent application 4-
The invention of No. 350124 was proposed, and the problem that feces and the like were deposited on the surface of wastewater in the precipitation separation chamber was solved. But,
In addition, it cannot be said that the water has been sufficiently purified and then drained into drains. For example, the sedimentation separation chamber has a relatively large volume in the septic tank, and although the residence time is relatively long between the septic tanks, even if there is some bacterial action, it is positive. It is left to the natural precipitation, separation and decomposition, and purification without adding any action. In the aeration chamber, the residence time is insufficient and the contact time with the biofilm is short. Recently, various useful bacteria for purification have been discovered, but it was very difficult to newly apply them to the already installed septic tank.

Therefore, the present invention proposes an apparatus for newly adding or adding useful bacteria to a septic tank.

A first aspect of the present invention is a bacterium addition device having a plurality of small holes, in which a bacteria-retaining substance that is fermented by adding water is enclosed, and the small holes are installed below the surface of wastewater. Is. A second aspect of the invention is a bacterium adding device characterized in that a floating body is attached around the upper part and the lower part is a net-like body. The third invention is
This is characterized in that the device for adding bacteria is a flexible bag-shaped container. A fourth aspect of the present invention is a bacterium-adding device characterized in that a bacterium-retaining substance that ferments when water is added is exchangeably enclosed. A fifth aspect of the invention is a bacterium adding device characterized in that a string-shaped body is attached to an upper portion. A sixth aspect of the invention is a bacterium adding device characterized in that a weight is attached to a lower portion.

[0005]

When at least the portion of the container containing the bacteria-retaining body, which has at least the small holes, is immersed in the wastewater of the septic tank, water enters through the small holes. As a result, the bacterial carriers in the container ferment, the bacteria proliferate, and gas is generated. The pressure of this gas pushes a liquid containing bacteria into the wastewater. This liquid is dispersed in the sedimentation separation chamber as the sewage is circulated, and the sewage is purified. The bacterial carrier contained in the container may be replaceable or may be a disposable type. When new useful bacteria are discovered, they can be added or added at any time.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a bacterium addition device A in a sectional view. 1 shows a cylindrical container. The upper part is the wall-shaped part 1-1
And the lower part is the mesh portion 1-2. Reference numeral 1-3 is a bottom portion, which is provided with a plurality of small holes.

[0006] The mesh and small holes are preferably of a size that does not allow the internal bacterial carrier to flow out. 2 is a lid having a knob 2-1; 3 is a float; 4 is a handle. Figure 2
[FIG. 3] is a plan view of a bacteria addition device A. Floating body 3
Is a hollow disc, but may be in a divided state in consideration of the relationship with the mesh-like portion which is a syndrome. Alternatively, the container 1 may be suspended in water. FIG. 3 shows a state in which the bacteria addition device A is provided in the sedimentation separation chamber 5 of the septic tank. 6 is an aeration room, 7
Is a precipitation chamber and 8 is a disinfection chamber. 9 and 10 are manhole covers. Reference numeral 9-1 indicates a sealing member such as an O-ring. Reference numeral 11 is an air tube, 12 is a baffle plate having an uneven portion 12-1, and 13 is an elbow. FIG. 4 shows another bacterium addition device B in a perspective view. 14 is a bag. 15 is
It is a group of small holes provided in the bag body 14, and when installed in the septic tank, the group of small holes is made to be under the water surface. The pores should be large enough to allow sewage to soak in, but not to shed the bacterial reservoir.

As a commercial product, a bag-like body having no air permeability is further covered on the bag body 14, and a desiccant is enclosed therein. Reference numeral 16 indicates a portion in which the weight is fixed or enclosed. A hole 17 for hanging a string-like body is provided on the upper portion of the brim 18. When hanging with a string, it is convenient to immerse the whole body under the water. A float may be provided under the hole so that the bacteria adding device B can be floated on the water surface. FIG. 5 shows an elevation view of the bacteria addition device B. FIG. 6 shows a state in which the bacteria addition device B is installed in the sedimentation separation chamber of the septic tank by hanging it with the string-shaped body 19.
In this case, a mounting portion 20 for fixing the string-like body 19 is provided inside the septic tank in advance. If the bacteria addition device is regarded as a kind of container, there are various forms even if the bacteria holder can be replaced or it is of a disposable type. There are various kinds of lids 2 as well.

Before the invention of Japanese Patent Application No. 4-350124, some of the septic tanks were designed to forcibly send air only to the aeration chamber to generate a circulating flow, to activate bacteria and to decompose feces. . However, in this case, the feces were accumulated on the water surface of the sedimentation separation chamber 5, which was unsanitary and hesitated to install the bacteria addition devices A and B of the present invention. In the invention of Japanese Patent Application No. 4-350124, for example,
The lower end of the air pipe 11 penetrating the manhole cover 9 is opened below the surface of the dirty water, and a baffle plate 12 is provided at a position slightly below the surface of the water. The baffle plate 12 has, for example, a disc-shaped main body portion and is provided with the concave-convex portion 9 at the peripheral edge portion. When the air rises along the air pipe 11 through the opening 11-1, the surrounding dirty water rises along with the rising air, is diverted by the baffle plate 12, and spreads toward the peripheral wall of the chamber. . The rise of air causes circulation of sewage over the entire room. Solid feces, undigested fibers, toilet paper, and the like collide with the uneven portion 12-1 provided on the peripheral portion of the baffle plate 12 and are caught and decomposed.

Containers 1 and 1 for the bacteria addition devices A and B
In 4, there are bacterial carriers such as EM bacteria (Effect
ive Micro-organisms) and rice bran and rice husks are mixed and fermented, and dried ones are added. By appropriately selecting the size of the mesh of the mesh portion 1-2 or the small holes of the small hole group 15, the rice bran and the rice husk are prevented from flowing out. Preferably, as shown in FIG. 3, there is no solid matter such as feces on the water surface of the precipitation separation chamber 5, that is, Japanese Patent Application No. 4-
In the settling separation chamber of the septic tank using the invention of 350142,
Float the bacteria addition device A containing the bacteria holder. Due to the water invading from the mesh portion 1-2, the bacteria-bearing body is fermented, the bacteria grow, and gas is generated. The liquid or liquid containing the bacteria in the bacteria addition device A flows out into the precipitation separation chamber and circulates in the chamber along with the circulation of sewage. by this,
Untreated feces and the like in the sedimentation separation chamber are processed.

In the case of the bacteria adding device B, the cord-like body 1
Suspend from the mounting part 20 at the manhole entrance at 9,
Preferably, it is installed in the wastewater in the sedimentation separation chamber of the septic tank using the invention of Japanese Patent Application No. 4-350142 as shown in FIG. Since the weight 16 is attached to the lower portion of the bacteria addition device B, it is stable even if sewage circulates.
The invading sewage ferments the bacterial carrier, proliferates the bacteria, and generates gas. A liquid or liquid containing bacteria disperses in wastewater and purifies the wastewater. According to the experiment of the present inventor, by using together with the invention of Japanese Patent Application No. 4-350124, feces, toilet paper and the like are decomposed and purified only in the part of the precipitation separation chamber and discharged as a transparent odorless liquid. I know that Therefore, only the precipitation separation chamber part and at most the disinfection chamber part,
It is also possible to configure a septic tank.

[0011]

[Effect] Even in the existing septic tank, useful bacteria can be easily added or added. By keeping the encapsulated or retained bacterial carrier in a dry state and installing it in a septic tank, it is possible to start fermentation.
Easy to handle. As it ferments in the septic tank, a strong purifying action can be maintained. When used in combination with the invention of Japanese Patent Application No. 4-350124, a stronger purification action can be achieved.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a bacteria addition device A.

FIG. 2 is a plan view of a bacteria addition device A.

FIG. 3 shows a state in which a bacterium adding device A is installed in a sedimentation separation chamber of a septic tank.

FIG. 4 shows a perspective view of a bacteria addition device B.

FIG. 5 shows an elevation view of the bacteria addition device B.

FIG. 6 shows a state in which a bacterium adding device B is installed in the sedimentation separation chamber of the septic tank.

[Explanation of symbols]

 1 Cylindrical container 1-1 Wall part 1-2 Mesh part 1-3 Bottom part 2 Lid body 2-1 Knob 3 Floating body 4 Handle 5 Sedimentation separation room 6 Aeration room 7 Sedimentation room 8 Disinfection room 9 Manhole cover 9-1 Seal member 10 Manhole cover 11 Air tube 11-1 Air tube opening 12 Baffle plate 12-1 Uneven portion 13 Elbow 14 Bag body 15 Small hole group 16 Weight holding part 17 Hanging hole 18 Collar part 19 String-like body 20 attachment part

Claims (6)

[Claims] 1. A bacterium addition device having a plurality of small holes, in which a bacteria-retaining body that ferments when water is added is enclosed, and the group of small holes is installed below the surface of wastewater. 2. The bacteria addition device according to claim 1, wherein a floating body is attached around the upper portion and the lower portion is a net-like body. 3. The bacteria addition device according to claim 1, wherein the device is a flexible bag-shaped container. 4. The bacteria addition device according to claim 1, 2 or 3, wherein a bacteria carrier that ferments when water is added is encapsulated in a replaceable manner. 5. The bacteria addition device according to claim 1, 2, 3 or 4, wherein a string-like body is attached to an upper portion. 6. A weight is attached to a lower portion of claim 1, 2.
Bacteria addition device described in 3, 4 or 5