CN114249486A

CN114249486A - Multiphase turbulent field sewage treatment equipment

Info

Publication number: CN114249486A
Application number: CN202011001139.XA
Authority: CN
Inventors: 王卫; 芦艳平; 余正学; 商文秀; 刘彬
Original assignee: Beijing Xincheng Yulu Environmental Protection Technology Co ltd
Current assignee: Beijing Xincheng Yulu Environmental Protection Technology Co ltd
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2022-03-29

Abstract

The invention provides a multiphase turbulent field sewage treatment device, which comprises: baffle plates vertically arranged in the anaerobic zone and the anoxic zone respectively, a plurality of aeration pipes arranged at the bottom of the aerobic zone, and a precipitation device arranged at the bottom of the precipitation zone; wherein, set up the stripping tube with the sedimentation zone intercommunication respectively in anaerobic zone, aerobic zone and the anoxic zone. The multiphase turbulent field sewage treatment equipment of the invention utilizes the irregular turbulent flow states of sewage and return sludge in the anaerobic zone, the anoxic zone and the aerobic zone, can fully mix the sewage and the return activated sludge, does not need to be additionally provided with stirring and flow pushing devices, degrades organic pollutants, and realizes synchronous nitrogen and phosphorus removal by anaerobic, anoxic, aerobic and return of the sewage. The processes of reflux, sludge discharge and the like all adopt an air stripping process, so that the unit consumption of water per ton is reduced, and the operation cost of sewage treatment is greatly reduced.

Description

Multiphase turbulent field sewage treatment equipment

Technical Field

The invention relates to the technical field of sewage treatment and purification, in particular to multiphase turbulent field sewage treatment equipment.

Background

A commonly used in the existing sewage treatment process²O process, the sewage enters an anaerobic zone and an anoxic zone, and the sewage and the activated sludge are fully mixed by arranging a stirring or flow pushing device to remove the sewageThe organic pollutants in the sewage are subjected to nitrification liquid reflux and sludge reflux through a reflux pump to carry out nitrification and denitrification reaction, and ammonia nitrogen and total nitrogen in the sewage are removed. In the anaerobic and anoxic link of the traditional sewage treatment process, in order to ensure that the sewage and the return sludge are fully mixed, an additional stirring and plug flow device is required, and the activated sludge at the tail end of the plug flow field can not fully react with the sewage. The stirring or flow-pushing device increases unit consumption of water per ton for sewage treatment, and the stirring and flow-pushing equipment needs to run uninterruptedly, so that the stirring and flow-pushing equipment has frequent faults, and the costs of subsequent maintenance, repair, replacement and the like are increased.

Disclosure of Invention

The invention aims to solve the technical problem of providing multiphase turbulent field sewage treatment equipment without adding a stirring and pushing device aiming at the defects of the prior art.

The technical problem to be solved by the invention is realized by the following technical scheme:

the invention provides a multiphase turbulent field sewage treatment device, which comprises: baffle plates vertically arranged in the anaerobic zone and the anoxic zone respectively, a plurality of aeration pipes arranged at the bottom of the aerobic zone, and a precipitation device arranged at the bottom of the precipitation zone; wherein, set up the stripping tube with the sedimentation zone intercommunication respectively in anaerobic zone, aerobic zone and the anoxic zone.

Preferably, the bottom end of first baffler with the second baffler slope sets up, and its inclination is: 45 degrees.

Preferably, the aerobic zone with intercommunication mouth department between the settling zone is equipped with an inclined plate, the inclination of inclined plate is: 45 degrees.

Preferably, a sludge discharge pipe is arranged in the anaerobic zone, and the sludge in the anaerobic zone is discharged to the outside of the multiphase turbulent field sewage treatment equipment.

The multiphase turbulent flow field sewage treatment equipment can fully mix sewage and backflow activated sludge by utilizing the irregular turbulent flow states of the sewage and the backflow sludge in an anaerobic zone, an anoxic zone and an aerobic zone, does not need to be additionally provided with stirring and flow pushing devices, and simultaneously prevents a water passing port from being blocked by inorganic granular sludge with higher specific gravity deposited at the lower part; the sewage and the activated sludge are fully reacted and mixed, so that organic pollutants are degraded, and the synchronous denitrification and dephosphorization of the sewage are realized through anaerobic treatment, anoxic treatment, aerobic treatment and reflux. The processes of reflux, sludge discharge and the like all adopt an air stripping process, so that the unit consumption of water per ton is reduced, and the operation cost of sewage treatment is greatly reduced.

The technical solution of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a schematic structural view of a multiphase turbulent field sewage treatment plant according to the present invention;

FIG. 2 is a schematic diagram of a multiphase turbulent field sewage treatment device of the present invention;

FIG. 3 is a process flow diagram of the multiphase turbulence field sewage treatment equipment of the invention.

Detailed Description

FIG. 1 is a schematic structural view of a multiphase turbulence field sewage treatment plant of the present invention. As shown in fig. 1, includes: a first baffle plate 1 and a second baffle plate 2 which are respectively and vertically arranged in the anaerobic zone and the anoxic zone, a plurality of aeration pipes 3 arranged at the bottom of the aerobic zone, and a sedimentation device 4 arranged at the bottom of the sedimentation zone; wherein, a gas stripping pipe 5 communicated with the sedimentation zone is respectively arranged in the anaerobic zone, the aerobic zone and the anoxic zone. First baffle 1 with the bottom slope setting of second baffle 2, its inclination is: 45 degrees; the aerobic zone with intercommunication mouth department between the settling zone is equipped with an inclined plate 6, the inclination of inclined plate 6 is: 45 degrees; and a sludge discharge pipe 7 is arranged in the anaerobic zone, and the sludge in the anaerobic zone is discharged to the outside of the multiphase turbulent field sewage treatment equipment.

The working principle is as follows:

FIG. 2 is a schematic diagram of a multiphase turbulence field sewage treatment device of the present invention, and FIG. 3 is a process flow diagram of the multiphase turbulence field sewage treatment device of the present invention. As shown in FIG. 2 and with reference to FIG. 3, the multiphase turbulent field sewage treatment device of the present invention has the following sewage treatment processes: the sewage of collection, through the equalizing basin, the equalizing basin is used for carrying out the uniform adjustment with the water yield and the quality of water of sewage then gets into the heterogeneous turbulent flow field sewage treatment device of this application: the sewage enters an anaerobic zone and an anoxic zone, and baffle plates are arranged in the anaerobic zone and the anoxic zone, so that the sewage forms turbulent flow in the two reaction zones, the turbulent flow is relative to laminar flow, the Reynolds number in a turbulent flow field is large, the inertia force is dominant, and the fluid is in a turbulent flow state. The movement of fluid particles is extremely irregular, the values of various flow parameters in a flow field have a pulsation phenomenon, and the diffusion rate of the momentum, energy, temperature and concentration of contained substances of the fluid is greater than that of laminar flow due to the rapid mixing of pulsation, so that the sewage is quickly and fully mixed with the activated sludge in a biochemical system. Then the sewage overflowed from the anoxic zone enters the aerobic zone to be treated next step, an aeration pipe is arranged in the aerobic zone, the aeration pipe aerates in the aerobic zone, so that the sewage degrades organic matters in the zone, ammonia nitrogen is converted into nitrate nitrogen, the aerated sewage enters a settling zone, the sewage is subjected to settling treatment in the zone, after solid-liquid separation of the sewage, liquid flows out from an upper port of the settling zone, the settled active sludge is settled at the bottom of the settling zone, and then the active sludge is respectively sent into each reaction zone through an air stripping pipe arranged in each zone to be treated next step.

In conclusion, the multiphase turbulent field sewage treatment equipment provided by the invention can fully mix sewage and backflow activated sludge by utilizing the irregular turbulent flow states of the sewage and the backflow sludge in the anaerobic zone, the anoxic zone and the aerobic zone, does not need an additional stirring and flow pushing device, and simultaneously prevents a water passing port from being blocked by inorganic granular sludge with higher specific gravity deposited at the lower part, and an air-stripping sludge discharge device is arranged in an anaerobic tank to regularly discharge the inorganic granular sludge with higher specific gravity; the sewage and the activated sludge are fully reacted and mixed, so that organic pollutants are degraded, and the synchronous denitrification and dephosphorization of the sewage are realized through anaerobic treatment, anoxic treatment, aerobic treatment and reflux. The unique turbulent flow field makes the sewage react with the activated sludge more fully and quickly, so that the volume of the biochemical reaction area is reduced, and the quality of the effluent reaches the standard. The processes of reflux, sludge discharge and the like all adopt an air stripping process, so that the unit consumption of water per ton is reduced, and the operation cost of sewage treatment is greatly reduced.

Claims

1. A multiphase turbulent field sewage treatment device is characterized by comprising: the anaerobic zone and the anoxic zone are respectively and vertically provided with a first baffle plate and a second baffle plate, the bottom of the aerobic zone is provided with a plurality of aeration pipes, and the bottom of the sedimentation zone is provided with a sedimentation device; wherein, set up the stripping tube with the sedimentation zone intercommunication respectively in anaerobic zone, aerobic zone and the anoxic zone.

2. The multiphase turbulent field sewage treatment device according to claim 1, wherein the bottom ends of the first baffle plate and the second baffle plate are arranged in an inclined manner, and the inclined angle is as follows: 45 degrees.

3. The multiphase turbulence field sewage treatment device of claim 1, wherein an inclined plate is arranged at a communication port between the aerobic zone and the settling zone, and the inclination angle of the inclined plate is as follows: 45 degrees.

4. The multiphase turbulent field sewage treatment plant of claim 1 wherein a sludge discharge pipe is provided in the anaerobic zone to discharge sludge in the anaerobic zone outside the multiphase turbulent field sewage treatment plant.