JPS6210716B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for treating sewage generated in pig farms and the like. Conventionally, sewage treatment has generally been carried out using activated sludge method equipment, but most of them did not function satisfactorily and the purification effect was not good. In order to solve this problem, the present invention proposes a sewage treatment device constructed into a compact device that utilizes the purifying action of natural bacterial microorganisms and can maximize the aeration efficiency. An embodiment of the present invention will be explained with reference to the drawings. An introduction groove 1' is formed on the side wall of a tank 1, a vinyl pipe 2 is laid on the inner floor wall, and a thick, anti-corrosion net 3 is stretched over the pipe to filter the water. Two solid-liquid separation tanks 4 configured in layers are provided, and an outlet B is provided at the lower part of the side wall A of the solid-liquid separation tank 4.
A well-known air lift device 6 is provided in the sedimentation tank 5, an air pipe 20 is provided at the bottom of the air lift device 6, an inflow tank 7 is provided in contact with the sedimentation tank 5, and a well-known air lift device 6 is provided in the sedimentation tank 5. An inflow pipe c is provided in the tank 5 and the inflow tank 7, a pump 8 is installed in the inflow tank 7,
The pipe 9 attached to the pump 8 is connected to the front aeration tank 10.
A sedimentation tank 11 is connected to the center of the front aeration tank 10.
The frames 1 are installed at equal intervals around the bottom of the sedimentation tank 11.
2 are provided at three locations and an air jet tube 13 is attached, an overflow notch 14 is provided at the top of the settling tank and an outflow pipe 15 is attached, a rectifying tube 16 is provided in the center of the settling tank 11, and an air blowing tube 13 is installed at the center of the settling tube 16. A flow pipe 17 is provided at the top with the outlet facing upward, and the air blower 18 installed adjacent to the front aeration tank 10 connects the front aeration tank 10.
The blower pipe 20 is attached to the pipe 19 provided outside under the upper edge of the tank, and the pipe 21 inside the tank is attached to the pipe 19.
and connect it to the air jet cylinder 13, and
1 is provided with a sludge discharge pipe 22 for discharging sludge to the outside. A culture tank 23 is provided, and the culture tank 23
A distribution pipe 15 is provided to communicate with the pre-stage aeration tank 10, an air pump 25 with an air suction pipe 24 attached to the bottom of the culture tank 23 is provided, and a chemical injection pump 27 is installed between the culture tank 23 and the aeration tank 26. death,
A pipe 28 attached to the pump 27 is branched and drawn above the water surface of the culture tank 23, the pre-stage aeration tank 10, and the aeration tank 26, a sedimentation tank 29 is provided inside the aeration tank 26, and the flow is rectified at the center of the inside of the sedimentation tank 29. A cylinder 30 is provided, and an inflow pipe 31 from the culture tank 23 is connected and attached to the rectifier cylinder 30 in the aeration tank 26, and the sedimentation tank 2
Attach the overflow notch 32 to the top of the aeration tank 2.
A drainage pipe 34 is attached to the horizontal wall of the sedimentation tank 29, a sludge discharge pipe 35 is installed at the bottom of the settling tank 29, a blower pipe 20 is attached to a pipe 36 provided outside the upper edge of the aeration tank 26, and a sludge discharge pipe 35 is installed at the bottom of the settling tank 29. Three frame stands 37 are provided at equal intervals around the periphery, and an air jet cylinder 38 is installed.
is installed, and the tank internal pipe 20 is attached to the air jet cylinder 38.
Attach. In the figure, D is the sewage introduction pipe, E is the muddy water pipe, and FG is the support frame. With the above configuration, the sewage introduced into the solid-liquid separation tank from the sewage introduction pipe D is transferred to the vinyl pipes 2 and 3 that are lined up.
The bulky garbage is filtered out from the outlet to the sedimentation tank 5.
The sludge is discharged by the air sent to the air lift device installed in the sedimentation tank 5, and the sewage that rises to the top is introduced into the inflow tank 7 through the pipe C and is pumped to the pump 8 by the operation of the pump 8. Installed pipe 9
The air that flows into the pre-stage aeration tank 10 and is sent through the pipe 21 is ejected from the air jet tube 13, and the sewage in the aeration tank is aerated to lower the BOD, and the aerated sewage is sent from the pipe to the rectifier tube. 16, the sludge settles and is drained from the sludge discharge pipe 22,
The supernatant liquid flows into the culture tank 23 through the flow pipe 15 attached to the overflow notch 14 provided in the settling tank 11, air is supplied by the air pump provided, and the water and air ejected from the air pump are aerated to naturally occur. The sewage, which has been injected through the pipe 28 with a chemical to reduce the blisters generated due to the increase in aerobic bacteria and the effect of stirring, flows into the rectifier tank 30 in the aeration tank 26 through the inflow pipe 31, Culture tank 2
In step 3, the mud in the sewage containing undigested materials settles and is discharged from the sludge discharge pipe 35, and the supernatant water flows out from the overflow notch 32 into the tank 26 and is aerated by the air jetted from the jet pipe 38 to remove the undigested material. In this purification process, the wastewater immediately after passing through the solid-liquid separation tank has a BOD value of 3100 ppm and an SS value of 760 ppm. It has a purifying effect with an SS value of 19ppm and 40ppm.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a plan view, Fig. 2 is a partial cross-sectional side view of a solid-liquid separation tank, and Fig. 3 is a vertical cross-sectional view of A-A and E-I. .

Claims (1)

[Claims] 1. As shown in the figure, a solid-liquid separation tank 4 is provided with pipes and nets attached to the floor wall to form a filtration layer, and an outlet B is provided at the bottom of the wall A of the solid-liquid separation tank. A tank 5 is provided, an air lift pump 6 is provided in the sedimentation tank 5, and an air pipe 20 is provided at the bottom.
An inflow tank 7 is provided in contact with the sedimentation tank 5, a pipe c is attached to the sedimentation tank 5 and the inflow tank 7, a pump 8 is installed in the inflow tank 7, and a pipe 9 attached to the pump 8 is connected to the pre-stage aeration tank 10. , a settling tank 11 is provided in the pre-stage aeration tank 10, a rectifying cylinder 16 is provided in the settling tank 11, a pipe 17 faces into the rectifying cylinder 16, a sludge discharge pipe 22 is provided in the lower part of the settling tank 11, and the pre-stage aeration is performed. A pipe 19 is provided on the outside under the upper edge of the tank 10, and a blower pipe 20 and a tank pipe 21 are attached to the pipe 19, and an air jet cylinder 13 is attached to the tip of the tank pipe 21 on the frame 1.
2, and an overflow notch 1 at the top of the sedimentation tank 11.
4 and attach the outflow pipe 15 to the culture tank 23.
An air pump 25 with an air suction pipe 24 attached to the bottom of the culture tank 23 is installed, and a pipe 28 attached to the chemical injection machine is drawn into the culture tank 23, the pre-stage aeration tank 10, and the aeration tank 26. A settling tank 29 is provided in the aeration tank 26, a sludge discharge pipe 35 is provided at the bottom, an overflow notch 32 is provided inside the upper edge, an outflow pipe 33 is attached, and a rectifying tube 3 is provided inside.
0, the inflow pipe 31 is installed so as to face the inside of the rectifier cylinder 30 from the culture tank 23, the pipe 28 is drawn to the upper part of the aeration tank 26, the pipe 36 is installed outside the upper edge of the aeration tank 26, the blower pipe 20 is installed, and the air pipe 20 is installed. This sewage treatment device is capable of treating organic waste liquid such as livestock manure, which is retracted into the interior, has an air jet cylinder 38 attached to the tip of the frame 37, and has an outflow pipe 34 attached to the upper side of the aeration tank 26.