JPH0634879Y2 - Prefabricated septic tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to improvement of a prefabricated septic tank.

(Prior Art) An example of a prefabricated septic tank that is usually manufactured by FRP
It is shown in FIG. The main body of this prefabricated septic tank is composed of an upper tank 1 and a lower tank 2, and the chambers are divided by partition plates 6 and 6, and the chambers corresponding to the respective functions of treating sewage, that is, the first anaerobic chamber 3, 2 An anaerobic over chamber 4, a contact aeration chamber 5 and the like are provided.

Further, each of the above-mentioned chambers needs to be completely independent in order to improve their respective functions, and for this reason, the partition plate 6 and the upper tank 1 and the lower tank 2 are bonded by the fixing member 6a. Reference numeral 11 is a material receiver that holds the anaerobic material 10, and is attached to the lower tank 2 and the partition plates 6 and 6 by a fixing member 11a. Further, 12 is a material retainer for the anaerobic material 10, and the lower member 2 is fixed by the fixing member 12a.
It is attached to the partition plates 6, 6. The upper tank 1 and the lower tank 2 are joined at the flange portions 1a and 2a to form a tank body.

(Problems to be solved by the invention) When the inside of the tank is divided by a plurality of partition plates to form each independent chamber as described above, as the tank becomes smaller, the partition plates mutually or the partition plate and the tank inner wall It becomes difficult to fix the partition plate and the inner wall of the tank because the gap between the partition wall and the tank becomes narrow. In particular, the inner wall of the upper tank and the partition plate are fixed, because the worker must enter the tank after joining the upper and lower tanks, which makes assembly work extremely difficult and time consuming, which leads to an increase in manufacturing cost and is preferable. Absent.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a prefabricated septic tank capable of forming a plurality of independent chambers by dividing the tank main body in a short time.

(Means for Solving the Problems) In order to achieve the above object, the prefabricated septic tank of the present invention is configured such that the inside of the tank main body is divided by two containers facing each other and the bottom is in contact with the inner wall of the tank main body, Including the above, three or more independent chambers are formed in the tank body.

And, usually, a container having a square cross section is used which is provided with opposite side walls that divide the inside of the tank body. Furthermore, it is preferable to previously attach a member and a component for treating sewage inside or inside and outside the container because the assembly is easy.

(Operation) When only one side wall of the container incorporated in the tank body is fixed to the inside, the container and the outside of the container become independent chambers.

(Example) Hereinafter, an example will be described with reference to the drawings. FIG. 1 is a vertical sectional view of a prefabricated septic tank according to the present invention, FIG. 2 is a horizontal sectional view of FIG. 1, FIG. 3 is FIG. FIG. 3 is a partially cutaway perspective view of the container in FIG. 2.

In the figure, 7 is a container having a square cross-section with an upper surface opening which is incorporated in a tank body composed of an upper tank 1 and a lower tank 2 and divides the inside of the tank by opposing side walls 7b and 7c. It is fixed to the inner walls of the upper tank 1 and the lower tank 2. An anaerobic material 10 is attached inside the container 7 by a material receiver 11 and a material retainer 12 in advance, and an advection pipe 16 is fixed to the side wall 7b.

The container 7 incorporated in the tank body becomes the second anaerobic chamber 4.
Also, the first anaerobic chamber and the side wall 7c are provided outside the side wall 7b of the container 7.
A contact aeration chamber 5 is formed on the outer side of the.

The configuration other than the fixing of the container 7 and the inner wall of the tank body is the same as that of the conventional prefabricated septic tank.

(Effects of the Invention) Since the present invention is configured as described above, it has the effects described below.

By mounting an independent container in the tank body and fixing only one side wall of the container, each chamber having the function of treating wastewater can be easily formed in the tank body, and thus the manufacturing cost is reduced.

If the parts and members required for water treatment are incorporated in the container beforehand, the whole assembly becomes easier.

Since the container and the lower tank are polymerized, the strength at the bottom increases.

[Brief description of drawings]

1 is a longitudinal sectional view of a prefabricated septic tank according to the present invention, FIG. 2 is a transverse sectional view of FIG. 1, FIG. 3 is a partially cutaway perspective view of the container in FIG. 1 and FIG. FIG. 5 is a sectional view showing a conventional embodiment. DESCRIPTION OF SYMBOLS 1 ... Upper tank, 1a ... Flange 2 ... Lower tank, 2a ... Flange 3 ... 1st anaerobic chamber, 4 ... 2nd anaerobic chamber 5 ... Contact aeration chamber, 6 ... Partition plate 6a ... Fixing member, 7 ... Container 7a ... Fixing member, 7b, 7c ... Side wall 8 ... Disinfection chamber, 9 ... Manhole lid 10 ... Anaerobic material, 11 ... Material receiving 11a ... Fixing member, 12 ... Material retainer 12a ... Fixing member, 13 ... Contact material 14 … Material receiver, 15… Material holder 16… Advection pipe, 17… Sedimentation chamber

Claims (2)

[Scope of utility model registration request] 1. The inside of the tank main body is divided by two containers facing each other and the bottom portion contacting the inner wall of the tank main body, and three or more independent chambers are formed in the tank main body including the container. A prefabricated septic tank. 2. The prefabricated septic tank according to claim 1, which is a container in which members and parts for treating sewage are attached inside or inside and outside.