JPH0513597U - Sewage septic tank - Google Patents

Abstract

(57) [Summary] [Object] The present invention aims to provide an inexpensive sewage purification tank by making the upper tank and the lower tank have the same shape to facilitate storage. [Structure] The present invention connects an upper tank 1 and a lower tank 2 having an inflow pipe 6 and a discharge pipe 10 and partitions the inside by a partition plate to form a precipitation separation chamber or an anaerobic treatment chamber 7, an aerobic treatment chamber, and a hopper. In a sewage purification tank having a shaped settling chamber and a disinfecting chamber, the upper tank 1 and the lower tank 2 are formed in the same shape, and the hopper-shaped settling chamber of the lower tank 2 is the mounting surface of the inflow pipe 6 in the upper tank 1. The upper tank 1 and the lower tank 2 are connected as described above, and an inspection port is provided on the upper surface of the upper tank 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of a sewage purification tank.

[0002]

[Prior Art]

 Conventional settling sludge natural return type sewage treatment tanks consist of an upper tank and a lower tank, and the inside is divided by a partition plate. The sewage formed and treated in the aerobic treatment chamber passes through the lower part of the partition plate and rises in the hopper-shaped sedimentation chamber, the heavy settling sludge returns to the aerobic treatment chamber, and the supernatant passes through the disinfection chamber. It is discharged from the discharge pipe to the outside of the system. That is, the side surface of the lower tank on the inflow pipe side is formed into a substantially vertical surface that can be removed from the mold, and the side surface of the hopper-shaped sedimentation chamber is formed with an inclined surface of about 60 degrees. In addition, the left and right side surfaces of the upper tank are formed into substantially vertical surfaces that can be removed from the mold.

[0003]

[Problems to be solved by the device]

 However, two molds are required to connect the upper tank and the lower tank to form the septic tank, so the mold cost is high, and the ratio of the product to the product is large, so the unit price of the product does not decrease. There is. In addition, when storing the products in the upper tank and the lower tank, they must be stored separately, which is a complicated task.

An object of the present invention is to provide an inexpensive wastewater purification tank by making the upper tank and the lower tank have the same shape to facilitate storage.

[0005]

[Means for Solving the Problems]

 The structure of the present invention for achieving the above-mentioned object will be described with reference to FIGS. 1 and 2 corresponding to an embodiment. In the present invention, an upper tank and a lower tank having an inflow pipe and an outflow pipe are connected to each other. In the sewage purification tank that is divided into a partition plate to form a sedimentation separation chamber or an anaerobic treatment chamber, an aerobic treatment chamber, a hopper-shaped sedimentation chamber, and a disinfection chamber, the upper tank and the lower tank are formed in the same shape. It is characterized in that the upper tank and the lower tank are connected so that the hopper-shaped precipitation chamber of the lower tank serves as the inflow pipe mounting surface in the upper tank, and the inspection port is provided on the upper surface of the upper tank.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. 2 is a lower tank of a bowl-shaped sewage purification tank that has a flange around the opening of the upper surface and has a substantially rectangular shape in plan view. The lower tank 2 is integrally formed of a synthetic resin such as FRP using a mold. ing. Reference numeral 4 denotes an outer wall of a precipitation chamber formed on one side surface of the lower tank 2 and provided with an inclination of about 60 degrees. Inside the tank, a partition plate at a boundary between the outer wall 4 and the aerobic treatment chamber is provided upward. A spreading hopper-shaped settling chamber is formed. The side surface of the lower tank opposite to the outer wall 4 is formed as a substantially vertical surface within a demoldable range.

Reference numeral 1 is an upper tank formed by using a mold in which the lower tank 2 is formed, and the product shape is exactly the same as that of the lower tank 2. Then, the upper tank 1 is turned over so that the flange portion is superposed on the flange portion of the lower tank 2 and each outer wall 4.4 is arranged so as to be on a diagonal line and connected. Reference numeral 6 denotes an inflow pipe attached to the outer wall 4 of the upper tank 1. The inflow pipe 6 is located at the center of the precipitation separation chamber or the anaerobic treatment chamber because the outer wall 4 is inclined. Therefore, the inflowing sewage is evenly diffused and the treatment can be further promoted. A discharge pipe 10 is attached to the side wall of the upper tank 1 opposite to the outer wall 4. Reference numeral 3 is a manhole that is attached by post-processing after forming the upper tank 1. Although not shown in FIG. 1, the inside of the tank is divided by a plurality of partition plates to form a sedimentation separation chamber having an inflow pipe or an anaerobic treatment chamber, an aerobic treatment chamber, a hopper-shaped sedimentation chamber, and a discharge pipe. The existing disinfection room is formed.

[0008]

[Effect of the device]

 The present invention connects an upper tank and a lower tank each having an inflow pipe and an outflow pipe, and partitions the inside by a partition plate to form a precipitation separation chamber or an anaerobic treatment chamber, an aerobic treatment chamber, a hopper-shaped precipitation chamber, and a disinfection chamber. In the sewage treatment tank that is formed, the upper tank and the lower tank are formed in the same shape, and the upper tank and the lower tank are connected so that the hopper-shaped precipitation chamber of the lower tank serves as the inlet pipe mounting surface in the upper tank. Since the inspection port is provided on the upper surface of the upper tank, it is possible to provide an inexpensive sewage purification tank that can be easily stored.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a schematic partial sectional view showing an embodiment of the inflow pipe side of the present invention.

[Explanation of symbols]

 1. Upper tank 2. Lower tank 3. Manhole 4. Outer wall 6. Inflow pipe 7. Precipitation separation chamber or anaerobic treatment chamber 8. Sewage surface 9. Inflow sewage 10. Discharge pipe

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hirokazu Inada 1250 Shimoeren, Shimodate City, Ibaraki Prefecture Hitachi Chemical Co., Ltd. Inside the Yuki Plant

Claims (1)

[Scope of utility model registration request] 1. An upper tank and a lower tank having an inflow pipe and a discharge pipe are connected to each other to partition the interior by a partition plate, and a precipitation separation chamber or an anaerobic treatment chamber, an aerobic treatment chamber, a hopper-shaped precipitation chamber, and a disinfection chamber are provided. In the sewage purification tank formed by forming the upper tank and the lower tank in the same shape, connect the upper tank and the lower tank so that the hopper-shaped settling chamber of the lower tank serves as the inlet pipe mounting surface in the upper tank. The sewage purification tank is characterized by having an inspection port on the upper surface of the upper tank.