Small-tonnage sewage treatment device

Abstract

The utility model provides a small-tonnage sewage treatment device, and mainly relates to the field of sewage treatment equipment. A small-tonnage sewage treatment device comprises a shell, a center cylinder serving as a settling zone is arranged at the center in the shell, four fan-shaped chambers are circumferentially arranged between the shell and the center cylinder, and the four fan-shaped chambers are respectively a solid-liquid separation zone, an anoxic zone, a first-stage aerobic zone and a second-stage aerobic zone according to a clockwise sequence, a water inlet is formed in the outer wall, where the solid-liquid separation area is located, of the shell, a water outlet pipe penetrating through the shell is arranged on the center cylinder, and communicating openings are formed in partitions between the solid-liquid separation area and the anoxic area, between the anoxic area and the first-stage aerobic area, between the first-stage aerobic area and the second-stage aerobic area and between the second-stage aerobic area and the center cylinder. The water treatment system has the beneficial effects that the water treatment effect in rural areas can be improved, and the design and construction cost of the water treatment system can be reduced.

Description

Technical Field

[0001] The utility model mainly relates to the field of sewage treatment equipment, in particular to a small-tonnage sewage treatment device. Background Art

[0002] In recent years, my country's rural economic construction has achieved rapid development, and rural domestic sewage has been treated. However, compared with urban areas, many rural domestic sewage treatment projects have encountered many new problems during construction and operation.

[0003] At present, many rural domestic sewage treatments are geographically scattered and large in number.

[0004] In addition, many rural sewage treatment equipment is based on the conversion of existing equipment. Under the premise of large differences in rural scale, these sewage treatment equipment are either in excess or do not meet local water discharge requirements. Due to the lack of practical experience in rural sewage treatment facilities and the few technical parameters to refer to, problems such as unreasonable design scale and low operation and maintenance efficiency have arisen. It is costly to carry out individual scale design for each rural area. Utility Model Content

[0005] In order to solve the deficiencies of the prior art, the utility model provides a small-tonnage sewage treatment device. The unitized combination can properly solve the problem of rural water treatment scale not being adaptable, improve the rural water treatment effect, and reduce the design and construction costs of the water treatment system.

[0006] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical solutions:

[0007] A small-tonnage sewage treatment device comprises a shell, wherein a central cylinder as a sedimentation zone is arranged at the center of the shell, four sector-shaped chambers are arranged circumferentially between the shell and the central cylinder, and the four sector-shaped chambers are respectively a solid-liquid separation zone, an anoxic zone, a primary aerobic zone and a secondary aerobic zone in clockwise order, a water inlet is arranged on the outer wall of the shell where the solid-liquid separation zone is located, a water outlet pipe penetrating the shell is arranged on the central cylinder, and connecting ports are arranged on the partitions between the solid-liquid separation zone and the anoxic zone, between the anoxic zone and the primary aerobic zone, between the primary aerobic zone and the secondary aerobic zone, and between the secondary aerobic zone and the central cylinder.

[0008] The water outlet pipe runs through the primary aerobic zone and is located at the upper middle position of the shell.

[0009] The water flow between the various areas in the shell relies on gravity.

[0010] The shell can be used for multiple tanks in series or in parallel.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model has a strong ability to degrade organic matter and remove nitrogen through a multi-stage anoxic / aerobic process, and the effluent can meet the sewage discharge standard, and can effectively treat rural domestic sewage.

[0013] According to the different water volumes in separate and joint household applications, single tanks and multiple tanks can be connected in parallel or in series in a variety of combinations and used flexibly, which can fundamentally avoid the problem of excess or shortage of rural sewage treatment equipment.

[0014] This equipment is buried underground, which can save land, reduce noise, maximize space resources and improve environmental quality.

[0015] This device is made of HDPE material, has high structural strength, strong corrosion resistance, long service life and can be recycled.

[0016] The overall standardized production of this device ensures product consistency and stability.

[0017] This device mainly adopts gravity flow when treating sewage, which saves energy and reduces emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 It is a schematic diagram of the internal structure of the utility model.

[0019] The numbers shown in the accompanying drawings are: 1, shell; 2, central tube; 3, solid-liquid separation zone; 4, anoxic zone; 5, primary aerobic zone; 6, secondary aerobic zone; 11, water inlet; 12, water outlet pipe; 13, connecting port. DETAILED DESCRIPTION

[0020] The utility model is further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the utility model and are not used to limit the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by this application.

[0021] like Figure 1 As shown, the small-tonnage sewage treatment device described in the utility model includes a shell 1, and the shell 1 is made of HDPE material as a whole, which has higher strength. A central tube 2 as a sedimentation area is arranged in the center of the shell 1, and the central tube 2 is integrally formed with the shell 1.

[0022] Four fan-shaped chambers are arranged in a circle between the shell 1 and the central tube 2. The four fan-shaped chambers are respectively a solid-liquid separation zone 3, anoxic zone 4, primary aerobic zone 5 and secondary aerobic zone 6 in clockwise order. A water inlet 11 is arranged on the outer wall of the shell 1 where the solid-liquid separation zone 3 is located. A water outlet pipe 12 is arranged on the central tube 2 to pass through the shell 1. In this embodiment, the water outlet pipe 12 passes through the primary aerobic zone 5, and the water outlet pipe 12 is located in the upper middle position of the shell 1. A connecting port 13 is arranged on the partitions between the solid-liquid separation zone 3 and the anoxic zone 4, between the anoxic zone 4 and the primary aerobic zone 5, between the primary aerobic zone 5 and the secondary aerobic zone 6, and between the secondary aerobic zone 6 and the central tube 2. The connecting port 13 ensures the sequential flow of sewage.

[0023] After passing through the septic tank, domestic sewage flows by gravity to a small-tonnage sewage treatment device. After entering the water inlet 11, it flows into the solid-liquid separation zone 3 through the central pipe. Under the action of gravity, larger particles are deposited at the bottom. After the supernatant is collected, it flows into the anoxic zone 4. The organic matter in the sewage undergoes a hydrolysis reaction in an anoxic environment to improve its biodegradability, and its pH value increases. At the same time, it plays a role in denitrification and removal of nitrate nitrogen. After anoxic treatment, the sewage flows into the primary aerobic zone 5 and the secondary aerobic zone 6 in turn. With the participation of oxygen, aerobic microorganisms directly oxidize and decompose part of the organic matter in the sewage to obtain energy, and the other part will be synthesized into new cell substances, which will be decomposed by the endogenous respiration of microorganisms under the action of oxygen. After aerobic treatment, it flows into the sedimentation zone. Under the action of gravity, the remaining activated sludge is deposited at the bottom, and the supernatant is discharged through the outlet pipe 12 to meet the standards.

[0024] In actual use, the device can be used in series or parallel with multiple tanks according to the size of the village to make it meet the scale requirements of the village and adapt to rural environments of various specifications.

Claims

1. A small-tonnage sewage treatment device, comprising a housing (1), Features: A central cylinder (2) serving as a sedimentation zone is arranged at the center of the shell (1), and four fan-shaped chambers are arranged in a circumferential manner between the shell (1) and the central cylinder (2). The four fan-shaped chambers are respectively a solid-liquid separation zone (3), an anoxic zone (4), a primary aerobic zone (5) and a secondary aerobic zone (6) in clockwise order. A water inlet (11) is arranged on the outer wall of the shell (1) where the solid-liquid separation zone (3) is located, and a water outlet pipe (12) penetrating the shell (1) is arranged on the central cylinder (2). A connecting port (13) is arranged on the partitions between the solid-liquid separation zone (3) and the anoxic zone (4), between the anoxic zone (4) and the primary aerobic zone (5), between the primary aerobic zone (5) and the secondary aerobic zone (6), and between the secondary aerobic zone (6) and the central cylinder (2).

2. A small-tonnage sewage treatment device according to claim 1, Features: The water outlet pipe (12) passes through the primary aerobic zone (5), and the water outlet pipe (12) is located at an upper position in the shell (1).

3. A small-tonnage sewage treatment device according to claim 1, Features: The water flow between the various areas in the shell (1) relies on gravity.

4. A small-tonnage sewage treatment device according to claim 1, Features: The housing (1) can be used in multiple tanks in series or in parallel.

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