CN211111286U

CN211111286U - Sewage treatment device

Info

Publication number: CN211111286U
Application number: CN201921284168.4U
Authority: CN
Inventors: 王刚; 董亮
Original assignee: Jiangsu Zhuoqing Environmental Protection Technology Co ltd
Current assignee: Jiangsu Zhuoqing Environmental Protection Technology Co ltd
Priority date: 2019-08-09
Filing date: 2019-08-09
Publication date: 2020-07-28
Anticipated expiration: 2029-08-09

Abstract

The utility model relates to a sewage treatment field especially relates to a sewage treatment plant. The sewage treatment device comprises an anaerobic reactor and an aerobic reactor; the anaerobic reactor comprises a pulse device, a central pipe, a water distribution device, a stirrer, a three-phase separator, a water collecting tank, a water outlet pipe, an exhaust pipe, a sludge discharge port and a body; the aerobic reactor comprises a water inlet pipe, a shell, an aeration pipe, a mud outlet pipe, a drain pipe, a decanter and a liquid level meter; the utility model has better biological nitrogen and phosphorus removal function, and each reaction zone runs in a completely mixed mode to realize synchronous nitrification-denitrification and biological phosphorus removal.

Description

Sewage treatment device

Technical Field

The utility model belongs to the technical field of waste water treatment, concretely relates to sewage treatment device.

Background

The UASB reactor is mainly after the anaerobic reaction to sewage earlier, decomposes the organic matter in the sewage into gas, then realizes the sewage treatment plant commonly used of solid, liquid, gas three-phase separation, and in current common anaerobic reaction tower, gas-liquid separation is incomplete, and a lot of moisture can get into in the gas collecting chamber, and the dross also can be attached to and go on the bubble in the gas collecting chamber, finally leads to the three-phase separation effect poor. In addition, when low-concentration sewage is treated at normal temperature, short flow and dead zones are easily formed in a sludge bed due to low gas production, so that the treatment efficiency is reduced or the reactor is difficult to normally operate.

The CASS process is a short name of a periodic cycle activated sludge method, is also called as a cycle activated sludge process, is a process which is improved again on the basis of SBR, has wider application range than the SBR process, can perform quantitative treatment and quantitative discharge, has flexible operation, strong shock resistance, small residual sludge amount and stable property, is not easy to expand, has simpler control system than the SBR process, is easy to realize automation and convenient to operate, and can achieve the effect of three-stage treatment on the water quality of secondary treatment. The disadvantage of the CASS process at the present stage includes that the biological denitrification effect is difficult to improve; the automation degree is high, and the requirement on the reliability of an automatic control system is high; the water inlet valve or the headstock gear and the aeration valve are opened frequently, and the quality requirement is higher.

SUMMERY OF THE UTILITY MODEL

To above-mentioned prior art current situation, the utility model provides a UASB that three-phase separation effect is good, treatment effeciency is high combines sewage treatment plant of CASS technology.

The utility model discloses a realize like this: a sewage treatment device is characterized in that: comprises an anaerobic reactor and an aerobic reactor; the anaerobic reactor 1 comprises a pulse device, a central pipe, a water distribution device, a stirrer, a three-phase separator, a water collecting tank, a water outlet pipe, an exhaust pipe, a sludge discharge port and a body; the aerobic reactor comprises a water inlet pipe, a shell, an aeration pipe, a mud outlet pipe, a drain pipe, a decanter and a liquid level meter; the pulse device is communicated with the body through a central pipe, the upper part of the body is provided with a three-phase separator, the lower part of the body is provided with a water distribution device, the upper part of the body is provided with a water collecting tank, a water outlet pipe is arranged in the water collecting tank, and the top of the body is provided with an exhaust pipe; the water outlet pipe is connected with the water inlet pipe, the aeration pipe is arranged at the lower part of the shell, the sludge outlet pipe is arranged at the lower part of the aeration pipe, and the water outlet pipe is arranged at the upper part of the aeration pipe.

Preferably, the lower part of the body is also provided with a stirrer.

Preferably, a decanter is further arranged in the shell.

Preferably, a liquid level meter is further arranged in the shell.

The utility model discloses a processing procedure as follows: the sewage to be treated flows into the sludge in the sludge layer through the water distribution device after passing through the central pipe from the pulse device, and then is mixed and contacted with the sludge, and the microorganisms in the sludge decompose the organic matters in the sewage and convert the organic matters into methane. The marsh gas is continuously discharged in the form of micro bubbles, the micro bubbles are continuously combined in the ascending process to gradually form larger bubbles, sludge with thinner sludge concentration formed on the upper part of a sludge bed and water ascend to enter a three-phase separator, the marsh gas enters a gas collecting chamber and then is discharged from an exhaust pipe, treated effluent separated from the sludge enters a subsequent CASS reactor from a water collecting tank through a water outlet pipe, sewage continuously enters a pre-reaction zone and enters a main reaction zone through the bottom of a partition wall, organic matters are degraded by microorganisms in a pool under the condition of ensuring oxygen supply, and the processes of aeration, sedimentation, drainage and the like of the whole process are periodically and circularly operated in the same reactor. Compared with the prior art, the utility model, its profitable technological effect as follows: 1) the three-phase separation is effectual, and the treatment effeciency is high: the stirring device is arranged at the sludge section of the reactor, so that the sludge can be stirred periodically to prevent sludge deposition, the reaction speed is increased, and the treatment efficiency is improved; 2) the CASS section omits a secondary sedimentation tank and a sludge reflux system of the conventional activated sludge process, and simultaneously can continuously feed water and intermittently discharge water. Different from the traditional SBR process, the degradation of pollutants by the biochemical reaction process can not only create an anaerobic-anoxic-aerobic stage in time, but also create an anaerobic-anoxic-aerobic separation in space; has better biological nitrogen and phosphorus removal function, and each reaction zone runs in a completely mixed mode to realize synchronous nitrification-denitrification and biological phosphorus removal.

Drawings

Fig. 1 is a schematic structural diagram of the sewage treatment device provided by the utility model.

In the figure: 1-1, a pulse device; 1-2, a central tube; 1-3, a water distribution device; 1-4, a stirrer; 1-5, a three-phase separator; 1-6, a water collecting tank; 1-7, water outlet pipe; 1-8, an exhaust pipe; 1-9, a sludge discharge port; 1-10, a body; 2-1, a water inlet pipe; 2-2, a shell; 2-3, an aeration pipe; 2-4, a mud outlet pipe; 2-5, a drain pipe; 2-6, a decanter; 2-7 and a liquid level meter.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the accompanying drawings and embodiments, it is to be understood that the specific embodiments described herein are only used for explaining the present invention, and are not used for limiting the present invention.

The utility model provides a sewage treatment device, as shown in figure 1, which comprises an anaerobic reactor 1 and an aerobic reactor 2; the anaerobic reactor 1 comprises a pulse device 1-1, a central pipe 1-2, a water distribution device 1-3, a stirrer 1-4, a three-phase separator 1-5, a water collecting tank 1-6, a water outlet pipe 1-7, an exhaust pipe 1-8, a sludge discharge port 1-9 and a body 1-10; the aerobic reactor 2 comprises a water inlet pipe 2-1, a shell 2-2, an aerator pipe 2-3, a mud outlet pipe 2-4, a drain pipe 2-5, a decanter 2-6 and a liquid level meter 2-7; the pulse device 1-1 is communicated with a body 1-10 through a central tube 1-2, a three-phase separator 1-5 is arranged at the upper part of the body 1-10, a water distribution device 1-3 is arranged at the lower part of the body 1-10, a water collection tank 1-6 is arranged at the upper part of the body 1-10, a water outlet tube 1-7 is arranged in the water collection tank 1-6, and an exhaust tube 1-8 is arranged at the top of the body 1-10; the water outlet pipe 1-7 is connected with the water inlet pipe 2-1, the aeration pipe 2-3 is arranged at the lower part of the shell 2-2, the sludge outlet pipe 2-4 is arranged at the lower part of the aeration pipe 2-3, and the water outlet pipe 2-5 is arranged at the upper part of the aeration pipe 2-3. The lower part of the body 1-10 is also provided with a stirrer 1-4. A decanter 2-6 is also arranged in the shell 2-2. The shell 2-2 is also provided with a liquid level meter 2-7.

The utility model discloses a processing procedure as follows: the sewage to be treated flows into the sludge in the sludge layer from the pulse device 1-1 through the central pipe 1-2 and then is mixed and contacted with the sludge in the sludge layer through water distribution of the water distribution device 1-3, and the microorganisms in the sludge decompose the organic matters in the sewage and convert the organic matters into methane. The biogas is continuously discharged in the form of micro bubbles, the micro bubbles are continuously combined in the ascending process to gradually form larger bubbles, sludge with thinner sludge concentration is formed at the upper part of a sludge bed and rises together with water to enter a three-phase separator 1-5, the biogas enters a gas collecting chamber and then is discharged from an exhaust pipe 1-8, treated effluent separated from the sludge enters a subsequent CASS reactor from a water collecting tank 1-6 through a water outlet pipe 1-7, the sewage continuously enters a pre-reaction zone and enters a main reaction zone through the bottom of a partition wall, organic matters are degraded by microorganisms in a pool under the condition of ensuring oxygen supply, and the aeration, precipitation, drainage and other processes of the whole process are periodically and circularly operated in the same reactor.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the present invention.

Claims

1. A sewage treatment device is characterized in that: comprises an anaerobic reactor (1) and an aerobic reactor (2); the anaerobic reactor (1) comprises a pulse device (1-1), a central pipe (1-2), a water distribution device (1-3), a stirrer (1-4), a three-phase separator (1-5), a water collecting tank (1-6), a water outlet pipe (1-7), an exhaust pipe (1-8), a sludge discharge port (1-9) and a body (1-10); the aerobic reactor (2) comprises a water inlet pipe (2-1), a shell (2-2), an aeration pipe (2-3), a mud outlet pipe (2-4), a drain pipe (2-5), a decanter (2-6) and a liquid level meter (2-7); the pulse device (1-1) is communicated with the body (1-10) through a central pipe (1-2), a three-phase separator (1-5) is arranged at the upper part of the body (1-10), a water distribution device (1-3) is arranged at the lower part of the body (1-10), a water collection tank (1-6) is arranged at the upper part of the body (1-10), a water outlet pipe (1-7) is arranged in the water collection tank (1-6), and an exhaust pipe (1-8) is arranged at the top of the body (1-10); the water outlet pipe (1-7) is connected with the water inlet pipe (2-1), the aeration pipe (2-3) is arranged at the lower part of the shell (2-2), the sludge outlet pipe (2-4) is arranged at the lower part of the aeration pipe (2-3), the water outlet pipe (2-5) is arranged at the upper part of the aeration pipe (2-3), the lower part of the body (1-10) is also provided with a stirrer (1-4), the shell (2-2) is also provided with a water decanter (2-6), and the shell (2-2) is also provided with a liquid level meter (2-7).