JPH0725996U - Sewage purification device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a sewage purification device capable of reducing the amount of sludge in a sedimentation separation chamber and obtaining stable water quality for a long time. [Structure] In a sewage purification apparatus that treats sewage in the order of a precipitation separation chamber, a contact aeration chamber, a precipitation chamber, and a disinfection chamber, a cylindrical container 1 having an open bottom at the middle part of the precipitation separation chamber 1 and a closed top.
6 is submerged in water, an air pipe 9 branched from an aeration blower 8 is connected to the top or bottom of the cylindrical container 16, and the side wall is penetrated through a side wall slightly above the lower end of the cylindrical container 16. Then, the communication portion of the U-shaped siphon pipe 17 is attached, and one end of the siphon pipe 17 is attached to the cylindrical container 1.
6. A sewage purification device which is provided so that a space portion remains in the upper part inside 6 and the other end of the siphon pipe 17 is submerged below the water surface line 10 of the contact aeration chamber 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wastewater purification device.

[0002]

[Prior art]

 Conventionally, in a sewage purification device that treats inflowing sewage in the order of a sedimentation chamber, a contact aeration chamber, a sedimentation chamber, and a disinfection chamber, sewage containing a large amount of solids, especially human waste, is floated on the sedimentation chamber before the solids are decomposed. Becomes scum. When the scum contains dust paper etc. in the solid content, once it becomes a scum, it is gradually accumulated below the water surface and is less likely to be dissolved again. Finally, the accumulated scum does not contact the precipitation separation chamber but the contact aeration chamber. Abruptly advection into the contact aeration chamber, and the cleaning capacity of the contact aeration chamber is exceeded.

[0003]

[Problems to be solved by the device]

 As described above, the conventional structure is characterized in that the solid content is stored as scum in the settling / separation chamber. If the scum is not maintained and maintained, the function of the purification device cannot be maintained. The present invention provides a sewage purification device that improves the above-mentioned drawbacks of the conventional purification device, reduces the amount of sludge in the sedimentation separation chamber, and obtains stable water quality for a long period of time.

[0004]

[Means for Solving the Problems]

 The present invention is a sewage purification apparatus that treats sewage in the order of a sedimentation separation chamber, a contact aeration chamber, a sedimentation chamber and a disinfection chamber, by submerging a cylindrical container with an open bottom and an closed top in the middle of the sedimentation separation chamber. And connecting the air pipe branched from the blower for aeration to the cylindrical container, and attaching a communication part of a U-shaped siphon pipe through the side wall to a side wall slightly above the lower end of the cylindrical container, The present invention relates to a sewage purification apparatus in which one end of the siphon pipe is provided in the upper part of the cylindrical container so that a space remains, and the other end of the siphon pipe is submerged below the water surface of the contact aeration chamber.

[0005]

【Example】

 Next, an embodiment of the present invention will be described. FIG. 1 is a sectional view showing a sewage purification apparatus according to an embodiment of the present invention, and FIG. 2 is an enlarged perspective view of a main part of FIG. The sewage flows into the main body 11 of the sewage purification apparatus from the part of the inflow pipe joint 12, is processed in the order of the precipitation separation chamber 1, the contact aeration chamber 2, the precipitation chamber 15 and the disinfection chamber 19, and then the part of the outflow pipe joint 13. Drained from. Inside the main body 11, a cylindrical air chamber 16 having a bottom open and an upper closed is provided on the advection wall 4 side of the precipitation separation chamber 1 which is divided into a precipitation separation chamber 1 and a contact aeration chamber 2 by a partition wall 3. It is placed submerged below the water surface line 10. In order to introduce air into the air chamber 16, an air control valve 18 is provided on an air pipe 9 branched from the aeration blower 8 and is connected to the upper portion of the air chamber 16. Next, a bottom portion, which penetrates the sidewall and further penetrates the partition wall 3, is attached to a side wall slightly above the lower end of the open bottom of the air chamber 16 and also through the partition wall 3. Then, one end of the siphon pipe 17 is arranged so as to leave a space in the upper part of the air chamber 16, and the other end of the siphon pipe 17 is opened below the water line 10 of the contact aeration chamber 2.

In the above-mentioned configuration, the air sent from the aeration blower 8 is adjusted by the air adjusting valve 18 and sent into the air chamber 16 little by little. When the sent air is accumulated up to the communication bottom of the siphon pipe 17 attached to the air chamber 16, the air accumulated by the siphon phenomenon is sent to the contact aeration chamber 2 at one time, Sewage will fill up except for the space above. By repeating this action, the water surface line 10 of the precipitation separation chamber 1 starts to generate a weak pulsation, which causes the floating scum to oscillate, thereby making it difficult to cause solidification. Then, the scum is dissolved in the intermediate water in the precipitation separation chamber 1 and adsorbed to the contact aeration chamber 2 to be purified. The peeled sludge in the contact aeration chamber 2 generated by the purification is returned from the advection port 5 to the sedimentation separation chamber 1 and stored therein.

As a result, the water advancing from the settling / separation chamber 1 to the contact aeration chamber 2 always has a stable pollutant concentration, so that the performance of the wastewater purification device can be stabilized for a long period of time. Moreover, the amount of sludge generated in the sedimentation separation chamber 1 is also reduced as compared with the conventional wastewater purification device. In the figure, 6 is an aeration pipe for aeration, 7 is an aeration pipe fixture, and 14 is a contact material.

[0008]

[Effect of device]

 According to the present invention, the water surface of the sedimentation separation chamber is continuously pulsated to prevent the floating scum from solidifying, the scum is redissolved and purified in the contact aeration chamber, and the sludge in the contact aeration chamber is removed. Since it is converted into water and returned to the sedimentation separation chamber, the amount of sludge in the sedimentation separation chamber can be reduced and stable water quality can be obtained for a long time.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a wastewater purification device according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of an essential part of the wastewater purifying apparatus of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Precipitation separation chamber, 2 ... Contact aeration chamber, 3 ... Partition wall, 4 ... Advection wall, 5 ... Advection port, 6 ... Air diffuser, 7 ... Air diffuser fixture, 8
… Aeration blower, 9… air pipe, 10… water line,
11 ... Sewage purification apparatus main body, 12 ... Inflow pipe joint, 13 ... Outflow pipe joint, 14 ... Contact material, 15 ... Sedimentation chamber, 16 ... Air chamber, 17 ... Siphon pipe, 18 ... Air control valve, 19 ... Disinfection chamber

Claims (1)

[Scope of utility model registration request] 1. In a sewage purification apparatus for treating sewage in the order of a precipitation separation chamber, a contact aeration chamber, a precipitation chamber and a disinfection chamber, a cylindrical container whose bottom is opened and whose top is closed is submerged in the middle of the precipitation separation chamber. And the air pipe branched from the aeration blower is connected to the cylindrical container, and a communication part of a U-shaped siphon pipe is attached to the side wall slightly above the lower end of the cylindrical container through the side wall. A sewage purification apparatus in which one end of the siphon pipe is provided so as to leave a space in the upper part of the cylindrical container, and the other end of the siphon pipe is submerged below the water surface of the contact aeration chamber.