CN207227124U - A kind of gas stripping type septic tank - Google Patents

Abstract

A kind of gas stripping type septic tank, including horizontal type shell, it is opened in the water inlet of horizontal type shell left end, it is opened in the water outlet of horizontal type shell right end, two pieces of main partition plates being arranged in horizontal type shell, horizontal type shell is separated into three sealed chambers by two pieces of main partition plates from left to right, respectively constitute anaerobic zone, aerobic zone and settling zone, two pieces of main nearly tops of partition plate offer feces port, air lift is provided with anaerobic zone and goes out excrement device automatically, mixed liquor air-lift device is provided with aerobic zone, the air lift goes out excrement device automatically, mixed liquor air-lift device connects fan induced draught mouth by an air lift pipeline.

Description

An air lift septic tank

technical field

The utility model belongs to the field of water treatment, in particular to a septic tank for sewage treatment in new rural areas.

Background technique

Now, the new rural sewage treatment has been widely used in rural China. Among them, the specifications of conventional septic tanks include two-format septic tanks and three-format septic tanks. According to the production materials, they are mostly brick septic tanks, steel septic tanks, Fiberglass septic tank. The disadvantage of brick septic tank is that it occupies a large area, the construction is cumbersome, the construction period is long, and it is easy to leak; the disadvantage of reinforced septic tank is that the steel bar is easy to corrode and the manufacturing cost is high; , there are many product consumables, and the production of FRP is a highly polluting industry. The assembly of conventional septic tanks is mostly parallel assembly (see attached picture), the disadvantage is that many locking bolts are required, the assembly is cumbersome, and the tight effect is poor. In addition, due to the limitation of production technology, conventional septic tanks only have anaerobic With the precipitation function, the ammonia nitrogen in the effluent is higher than that in the influent, which is not suitable for the policy of building a beautiful new countryside in our country.

The working principle of the air stripping device is to use the density difference between the inside and outside of the tube to lift and reflux. For the conventional mixed liquid gas lift and reflux, there are the following problems. The use of water pumps for reflux requires high power consumption. In order to ensure the efficiency of nitrogen and phosphorus removal, a mixed The liquid reflux ratio is often very large.

Utility model content

Aiming at the deficiencies of the prior art, the utility model provides an organic combination of a septic tank and an air-lifting device, provides an air-lifting system with low energy consumption, good air-lifting effect, nitrogen removal effect, and economical and reliable products. Septic tank.

In order to achieve the purpose of this utility model, the following technical solutions are provided: an air-lift septic tank, comprising a horizontal shell, a water inlet opened at the left end of the horizontal shell, a water outlet opened at the right end of the horizontal shell, There are two main partitions installed in the horizontal shell, which divide the horizontal shell into three sealed chambers from left to right, which respectively constitute anaerobic zone, aerobic zone and sedimentation zone. Near the top of the main partition, there is a manure opening, which is characterized in that the anaerobic zone is equipped with an air-lift automatic manure discharge device, and the aerobic zone is equipped with a mixed liquid air-lift device. The air-lift automatic manure discharge device, the mixed liquid The air-lifting devices are all connected to the suction port of the fan through an air-lifting pipeline.

As a preference, 1, 2, 3...N+1 sub-baffles are set in the anaerobic zone to divide the anaerobic zone into anaerobic zone I, anaerobic zone II, and anaerobic zone III.. .... In the anaerobic N+I area, there are excrement openings near the top of the auxiliary partition.

As a preference, the airlift automatic excrement device includes a feces-lifting main pipe extending into the near bottom of the anaerobic zone, a rotary flow regulator connected with the feces-lifting main pipe, and a feces discharge pipe connected with the rotary flow regulator, and the feces discharge pipe is connected with the feces collection bucket.

As preferably, the mixed liquid stripping device includes a mixed liquid stripping main pipe extending into the near bottom of the aerobic zone, a rotary flow regulator connected with the mixed liquid gas stripping main pipe, a return pipeline connected with the rotary flow regulator, and the return pipeline communicates with anaerobic zone, so that the sewage in the aerobic zone flows back into the anaerobic zone for denitrification.

Preferably, the rotary flow regulator includes a top-sealed inner liner, a rotary sleeve sleeved on the inner liner, and a connecting joint arranged at the bottom end of the inner liner. The side wall of the inner liner is provided with a water outlet hole. There are adjustment holes on the wall corresponding to the water outlet holes, and the return flow is adjusted by rotating the coincidence degree of the adjustment holes on the rotating sleeve and the water outlet holes. The rotary flow regulator is made of UPVC, PE, CS, SS, PVC or PP.

Preferably, an aeration device is provided at the bottom of the aerobic zone, and the aeration device is connected to the air outlet of the blower through an aeration pipeline.

Preferably, suspended fillers are put into the aerobic zone.

Preferably, the assembly method of the horizontal housing is designed as a concave-convex mold assembly method or a drawer-type assembly method.

Preferably, the horizontal housing is injection molded.

Preferably, the horizontal housing is provided with a water level scale or a float scale.

working principle:

Household domestic sewage enters the anaerobic zone from the water inlet for anaerobic treatment, then enters the aerobic zone to realize the nitrification process, and then the mixed liquid is lifted to the return pipeline by the mixed liquid gas stripping device to return to the anaerobic zone to realize the denitrification process, and then Ammonia nitrogen is removed, and the treated sewage enters the sedimentation area, where it settles statically to separate mud and water, and finally the treated sewage is discharged.

Beneficial effects of the utility model:

1. The septic tank adopts injection molding, which is reliable in work, low in manufacturing cost, and will not corrode or rust. Compared with conventional brick septic tanks, it greatly reduces the occupied area and has good economic benefits.

2. The septic tank uses the air lift reflux device to realize the sewage circulation in the two partitions and realize the nitrification and denitrification.

3. Use the air blower to lift and reflux, which can realize the function of aerobic aeration and save energy consumption.

4. Part of the suspended filler is put into the aerobic zone, and the microorganisms are easy to attach and form, which increases the sludge concentration and improves the biochemical efficiency.

5. The operation is simple. The outlet of the return pipe is equipped with a rotary flow regulator, which greatly reduces the cost compared with the valve. At the same time, the return flow can be controlled, which greatly improves the production efficiency.

Description of drawings

Figure 1 is a schematic diagram of the prior art.

Figure 2 is a schematic diagram of the assembly method of the concave and convex molds.

Figure 3 is a schematic diagram of the drawer-type assembly method.

4 is a front view of Embodiment 1.

5 is a front view of Embodiment 2.

Fig. 6 is a structural schematic diagram of a mixed liquid air-lifting device and an air-lifting automatic manure-discharging device.

Figure 7 is a schematic diagram of the structure of the rotary flow regulator.

Detailed ways

Embodiment 1: An air-lift septic tank, including a horizontal shell 1, a water inlet 1.1 opened at the left end of the horizontal shell 1, a water outlet 1.2 opened at the right end of the horizontal shell 1, and a water outlet set at the horizontal shell 1. Two main partitions 2 in the shell 1, the two main partitions 2 divide the horizontal shell 1 from left to right into three sealed chambers, which respectively constitute the anaerobic zone 3, the aerobic zone 4 and the sedimentation zone 5. The two main partitions 2 are provided with feces outlets 2.1 near the top, the water inlet 1.1 and the water outlet 1.2 are located near the top of the horizontal shell 1, and the anaerobic zone 3 is equipped with an air-lift automatic feces discharge device 6 , the aerobic zone 4 is provided with a mixed liquid air lift device 7, the air lift automatic manure removal device 6, and the mixed liquid air lift device 7 are all connected to the blower fan 10 through the first air lift pipeline 8 and the second air lift pipeline 9. The tuyere, the air outlet of the fan 10 is connected to the aeration device 11 at the bottom of the aerobic zone 4 through the aeration pipeline, and the automatic excrement discharge device 6 includes a feces lifting supervisor 6.1 extending into the bottom of the anaerobic zone 3 and connected with the manure lifting supervisor 6.1 Rotary flow regulator 11, feces discharge pipe 12 connected with rotary flow regulator 11, feces discharge pipe 12 is connected to feces collection bucket 13; mixed liquid gas lift device 7 includes a mixed liquid gas lift main pipe 7.1 extending into the bottom end of the aerobic zone 3 1. Connect the rotary flow regulator 11 with the mixed liquid gas lifting main pipe 7.1, and the return pipeline 7.2 connected with the rotary flow regulator 11. The return pipeline 7.2 extends into the anaerobic zone 3 and has a return port 7.2.1, which communicates with the anaerobic zone 3. Make the sewage in the aerobic zone 4 flow back into the anaerobic zone 3 for denitrification. The first gas lift pipeline 8 and the second gas lift pipeline 9 are both provided with vertical sections coaxially inserted in the manure lifting main pipe 6.1, The gas stripping supervisor of the mixed liquid is in 7.1.

Embodiment 2: Referring to Example 1, an anaerobic zone 3 is provided with a sub-baffle 14, which divides the anaerobic zone 3 into an anaerobic I zone 15 and anaerobic II zone 16. The tops are equipped with feces openings 14.1, the air lift automatic feces discharge device 6 is set in the anaerobic II area 16, and the return pipe 7.2 of the mixed liquid air lift device 7 extends into the anaerobic I area 15, the anaerobic II area In zone 16, return ports 7.2.1 are provided.

In the above embodiment 1 or 2, the rotary flow regulator 11 includes a top-sealed inner liner 11.1, a rotary sleeve 11.2 sleeved on the inner liner 11.1, a connecting joint 11.3 arranged at the bottom end of the inner liner 11.1, (the connecting joint Hoops can be used) The side wall of the inner liner 11.1 is provided with a water outlet hole 11.1.1, and the side wall of the rotating sleeve 11.2 is provided with an adjustment hole 11.2.1 corresponding to the water outlet hole 11.1.1. By rotating the rotation sleeve 11.2, the upper adjustment hole 11.2 .1 The degree of coincidence with the water outlet hole 11.1.1 is used to adjust the return flow.

In the above-mentioned embodiment 1 or 2, the main and auxiliary partitions (2, 14) are equipped with downward elbows, the top of the anaerobic zone 3 is provided with an exhaust port 3.1, and the top of the horizontal shell is provided with an observation tube. manhole.

In the above embodiment 1 or 2, the aerobic zone 3 is filled with suspended fillers.

In the above-mentioned embodiment 1 or 2, the assembly method of the horizontal housing is designed as a concave-convex mold assembly method or a drawer-type assembly method.

In the above embodiment 1 or 2, the horizontal housing is injection molded.

In the above-mentioned embodiment 1 or 2, the horizontal casing is provided with a water level scale or a float scale.

In the above-mentioned embodiment 1 or 2, the fan 10 passes through the first air lift pipe 8, the second air lift pipe 9 and the aeration pipe 11, wherein the first air lift pipe 8 and the second air lift pipe 9 are connected to the air suction port of the fan 10, The aeration pipe 11 is connected to the air outlet of the fan 10, which not only realizes the function of aerobic aeration, but also realizes the gas lift-back flow of the mixed liquid, and the gas lift-back flow of the mixed liquid into the return pipe 7.2, and then flows back to the anaerobic zone 3 through the return pipe 7.2 , The outlet of the return pipeline 7.2 is provided with a rotary flow regulator 11, which can adjust the return flow. After being treated in the anaerobic zone 3 and the aerobic zone 4, the sewage flows into the sedimentation zone 5, where it settles still, separates the mud and water, and finally discharges the sewage.

Claims (10)

1. An air-lift septic tank, comprising a horizontal shell, a water inlet opened at the left end of the horizontal shell, a water outlet opened at the right end of the horizontal shell, and two main compartments arranged in the horizontal shell Two main partitions divide the horizontal shell into three sealed chambers from left to right, which respectively constitute anaerobic zone, aerobic zone and sedimentation zone. The two main partitions are provided with feces ports near the top. It is characterized in that the anaerobic area is equipped with an automatic excrement extraction device for air lifting, and the mixed liquid air extraction device is installed in the aerobic area. tuyere. 2. A kind of air-lift septic tank according to claim 1, characterized in that 1, 2, 3...N+1 auxiliary partitions are arranged in the anaerobic zone, and the anaerobic zone It is divided into anaerobic zone I, anaerobic zone II, anaerobic zone III... and anaerobic N+I zone, and fecal openings are opened near the top of the auxiliary partition. 3. A kind of air lift type septic tank according to claim 1, it is characterized in that the air lift automatic excrement device comprises stretching into the near bottom end of the anaerobic zone to lift the manure main pipe, is connected with the manure lift main line to the rotary flow regulator, Connect the excrement collection bucket with the excrement discharge pipe of the rotary flow regulator, and the excrement discharge pipe. 4. A kind of air lift type septic tank according to claim 1, it is characterized in that the mixed liquid air lift device comprises the mixed liquid air lift main pipe that stretches into the near bottom of the aerobic zone, and the mixed liquid air lift main pipe is connected with the rotating flow rate A regulator, a return pipe connected to the rotary flow regulator, the return pipe is connected to the anaerobic zone, so that the sewage in the aerobic zone flows back into the anaerobic zone for denitrification. 5. A kind of air-lift septic tank according to claim 3 or 4, characterized in that the rotary flow regulator comprises a top-sealed inner liner, a rotary sleeve sleeved on the inner liner, and arranged on the inner liner The connection joint at the bottom of the pipe, the side wall of the lining pipe is provided with a water outlet hole, and the side wall of the rotating sleeve is provided with an adjustment hole corresponding to the water outlet hole, and the return flow is adjusted by the coincidence of the adjustment hole and the water outlet hole on the rotating sleeve. 6. The air-lift septic tank according to claim 5, wherein the rotary flow regulator is made of UPVC, PE, CS, SS, PVC or PP. 7. The air-lift septic tank according to claim 1, characterized in that an aeration device is provided at the bottom of the aerobic zone, and the aeration device is connected to the air outlet of the fan through an aeration pipeline. 8. A kind of air-lift septic tank according to claim 1, characterized in that suspended filler is put into the aerobic zone. 9. An air-lift septic tank according to claim 1, characterized in that the assembly method of the horizontal shell is designed as a concave-convex mold assembly method or a drawer-type assembly method. 10. An air-lift septic tank according to claim 1, characterized in that the horizontal shell is injection molded.