CN110818106A

CN110818106A - High-efficient aeration sewage treatment pond with defoaming function

Info

Publication number: CN110818106A
Application number: CN201911172231.XA
Authority: CN
Inventors: 王金鑫; 闫慧强
Original assignee: 郑州维纳实验设备有限公司
Current assignee: Guangzhou Zhongsheng Water Environmental Protection Technology Co ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-02-21
Anticipated expiration: 2039-11-26
Also published as: CN110818106B

Abstract

The invention belongs to the field of sewage treatment facilities, and particularly relates to a high-efficiency aeration sewage treatment tank with a defoaming function, which comprises a tank body and an air supply pump, wherein two horizontally arranged semicircular shunt pipes are fixedly connected to the peripheral side wall of the tank body, one ends of the two semicircular shunt pipes are communicated with the air supply pump, a plurality of defoaming pipes which are distributed at equal intervals are fixedly communicated with the lower side wall of the semicircular shunt pipes, the lower ends of the defoaming pipes are conical and extend to the water surface in the tank body, a plurality of downwards inclined foam poking needles are fixedly connected to the inner side wall of each defoaming pipe, the two semicircular shunt pipes are fixedly communicated through a mixing box, the outflow ends of the two semicircular shunt pipes are opposite to each other, and a condensate screen plate is fixedly connected to the inner side wall of the mixing box. The invention can puncture larger bubbles through the defoaming pipe, and suck the smaller bubbles into the defoaming pipe to contact and mix with air, thereby improving the oxygen dissolving efficiency and effectively improving the activity of aerobic bacteria.

Description

High-efficient aeration sewage treatment pond with defoaming function

Technical Field

The invention belongs to the field of sewage treatment facilities, and particularly relates to a high-efficiency aeration sewage treatment tank with a defoaming function.

Background

In sewage treatment, organic matters in sewage are generally decomposed in a microbial degradation mode, and an aerobic bacteria pool and an anaerobic bacteria pool are configured; for the aerobic bacteria tank, in order to improve the activity of the aerobic bacteria and ensure the biochemical reaction effect, an aeration system is required to be arranged in the tank so as to continuously provide a large amount of oxygen for the tank.

The surface of the pool water of the sewage treatment pool usually generates a large amount of foam which contains more impurities, the foam is gradually moved and accumulated around the sewage pool under the push of aeration waves, if the foam is not removed in time, the foam is easy to overflow from the pool to cause pollution, and the large amount of generated foam influences the oxygen dissolving efficiency of the pool water to oxygen in the air and is not beneficial to the growth of microorganisms; the defoaming mode of current sewage treatment pond is defoaming agent defoaming and water spray defoaming mostly, uses too much defoaming agent can cause the pollution to the water, and the mode efficiency that adopts the water spray defoaming is lower, and the defoaming is with high costs, the effect is poor.

Therefore, we propose a highly efficient aeration sewage treatment tank with defoaming function to solve the above problems.

Disclosure of Invention

The invention aims to provide an efficient aerated sewage treatment tank with a defoaming function, which can automatically defoam and improve aeration efficiency, aiming at the problems of more foams and more troublesome defoaming in a sewage tank.

In order to achieve the purpose, the invention adopts the following technical scheme: an efficient aeration sewage treatment tank with a defoaming function comprises a tank body and an air supply pump, wherein two semicircular shunt tubes which are horizontally arranged are fixedly connected to the peripheral side wall of the tank body, one ends of the two semicircular shunt tubes are communicated with the air supply pump, the lower side wall of the semicircular flow dividing pipe is fixedly communicated with a plurality of defoaming pipes which are arranged at equal intervals, the lower ends of the defoaming pipes are conical and extend to the water surface in the tank body, and the inner side wall of the defoaming pipe is fixedly connected with a plurality of downwards inclined bubble poking needles, the two semicircular flow dividing pipes are fixedly communicated through a mixing box, the outflow ends of the two semicircular flow dividing pipes are opposite to each other, a condensate screen plate is fixedly connected to the inner side wall of the mixing box, many aeration pipes, many have been arranged to the bottom equidistance of cell body the aeration pipe all communicates with the mixing box through the air duct, the surperficial axial equipartition of aeration pipe has the aeration hole.

The invention has the advantages that: air feed pump blows in the air to two semi-ring shunt canals, the air current passes through the semi-ring shunt canals fast, can know according to Bernoulli's principle, when high flow, the velocity of flow is big, pressure is just little, then the air pressure in the semi-ring shunt canals is compared in the intraductal little of defoaming, then the defoaming pipe produces suction to the bubble on the liquid level in the cell body, great bubble is punctured by the cone end of defoaming pipe, less bubble is punctured by stabbing the bubble needle in being inhaled the defoaming pipe, little bubble after the fracture becomes in the droplet is inhaled the semi-ring shunt canals, the purpose of defoaming has been reached, prevent that the foam in the cell body from influencing the growth of microorganism.

The air in the two semi-annular shunt pipes carries small liquid drops to be converged in the mixing box, and the small liquid drops collide with each other when converging, so that the air pressure at the converging part is increased sharply, the higher air pressure improves the dissolved oxygen rate of water, oxygen in the air is favorably dissolved into the small liquid drops, the small liquid drops are converged on the liquid condensation screen plate to form larger water drops, and the large water drops drop into the aeration pipe below and enter the water in the pool body, so that the oxygen content of the pool water is improved, the growth and the propagation of microorganisms are favorably realized, the aeration effect is better, and the efficiency of sewage treatment is improved.

Preferably, a plurality of the poking and bubble-ejecting needles are arranged in the defoaming pipe in a staggered mode.

Preferably, a spoiler is arranged in the semi-annular shunt pipe and is spirally arranged, and the spoiler can enable oxygen in partial air to be dissolved into small liquid drops when the oxygen flows in the semi-annular shunt pipe, so that the oxygen dissolving rate is increased.

Preferably, the positions of the aeration holes on the two adjacent aeration pipes are opposite, and air flows out of the aeration holes into the tank body and collides to generate a vortex, so that the retention time of the air in the tank body is prolonged, and the dissolved oxygen efficiency of the tank water is further improved.

Preferably, the top of aeration pipe is equipped with the bar baffle, the bar baffle passes through bracing piece and aeration pipe fixed connection, the width of bar baffle equals with the diameter of aeration pipe, and the air flows out to the cell body in from the aeration hole, upwards floats under the buoyancy, can know according to karman vortex street phenomenon, when certain object was walked around to the steady stream under certain condition, object both sides can periodically drop out rotation direction opposite, arrange into regular biserial line vortex, then the air upwards floats the in-process, need walk around the bar baffle, form rotation direction opposite, arrange into regular biserial line vortex, the air is at last floating in-process, the contact time with the pond water is longer, the contact surface is bigger, be favorable to oxygen gas to dissolve in the pond water, the activity of good oxygen fungus has effectively been improved.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment 1 of a highly effective aerated wastewater treatment tank with defoaming function provided by the invention;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a schematic top view of a semi-annular flow dividing pipe in an embodiment 1 of the highly effective aerated wastewater treatment tank with defoaming function according to the present invention;

FIG. 4 is a schematic top view of an aerator pipe in example 1 of a highly effective aerated wastewater treatment tank with defoaming function according to the present invention;

FIG. 5 is a schematic structural diagram of a spoiler in example 1 of the highly effective aerated wastewater treatment tank with defoaming function according to the present invention;

FIG. 6 is a schematic structural diagram of an embodiment 2 of the high-efficiency aerated wastewater treatment tank with a defoaming function provided by the invention.

In the figure, a pool body 1, an air supply pump 2, a semi-annular shunt tube 3, a defoaming tube 4, a bubble poking needle 5, a mixing box 6, a condensate screen plate 7, an aeration tube 8, an air guide tube 9, an aeration hole 10, a spoiler 11 and a strip-shaped baffle 12 are arranged.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Example 1

As shown in fig. 1-5, a high-efficiency aeration sewage treatment tank with defoaming function comprises a tank body 1 and an air supply pump 2, two semicircular shunt pipes 3 horizontally arranged are fixedly connected to the peripheral side wall of the tank body 1, it is worth mentioning that a spoiler 11 is arranged in each semicircular shunt pipe 3, each spoiler 11 is spirally arranged, each spoiler 11 can enable oxygen in partial air to be dissolved into small liquid droplets when oxygen flows in each semicircular shunt pipe 3, so that the dissolved oxygen rate of each spoiler is increased, one end of each semicircular shunt pipe 3 is communicated with the air supply pump 2, a plurality of defoaming pipes 4 which are equidistantly arranged are fixedly communicated with the lower side wall of each semicircular shunt pipe 3, the lower ends of the defoaming pipes 4 are conical and extend to the water surface in the tank body 1, a plurality of downwards inclined poking needles 5 are fixedly connected to the inner side wall of each defoaming pipe 4, and the plurality of poking needles 5 are arranged in the defoaming pipes 4 in a staggered manner, two semicircular shunt tubes 3 pass through the fixed intercommunication of mixing box 6, and the end of flowing out of two semicircular shunt tubes 3 is just right each other, fixedly connected with lime wash otter board 7 on the inside wall of mixing box 6, many aeration pipes 8 have been arranged to the bottom equidistance of cell body 1, many aeration pipes 8 all communicate with mixing box 6 through air duct 9, aeration hole 10 has been equipped with to aeration pipe 8's surperficial axial equipartition, it is to be noted that, the position of aeration hole 10 on two adjacent aeration pipes 8 is just relative, the air flows out to cell body 1 in from aeration hole 10, the collision takes place, produce the vortex, the dwell time of air in cell body 1 has been prolonged, the dissolved oxygen efficiency of pond water has further been improved.

The working principle of the embodiment is as follows: air feed pump 2 blows in the air in to two semi-ring shunt tubes 3, the air current passes through semi-ring shunt tubes 3 fast, can know according to Bernoulli's principle, when high flow, the velocity of flow is big, pressure is just little, then air pressure in the semi-ring shunt tubes 3 is compared in little in defoaming pipe 4, then defoaming pipe 4 produces suction to the bubble on the liquid level in the cell body 1, great bubble is punctured by the cone end of defoaming pipe 4, less bubble is punctured by stabbing bubble needle 5 in being inhaled defoaming pipe 4, little bubble after the fracture becomes in the droplet is inhaled semi-ring shunt tubes 3, the mesh of defoaming has been reached, prevent that the growth of the interior foam of cell body 1 influence microorganism.

The air in the two semicircular shunt tubes 3 carries small liquid drops to be converged in the mixing box 6, and when converging, the small liquid drops collide with each other, so that the air pressure at the converging part is increased sharply, the higher air pressure improves the dissolved oxygen rate of water, oxygen in the air is facilitated to be dissolved into the small liquid drops, the small liquid drops are converged on the liquid condensation screen plate 7 to form larger water drops, and the small liquid drops drop into the aeration pipe 8 below and enter the water in the pool body 1, so that the oxygen content of the pool water is improved, the growth and the propagation of microorganisms are facilitated, the aeration effect is better, and the efficiency of sewage treatment is improved.

Example 2

As shown in fig. 6, the present embodiment is different from embodiment 1 in that: bar baffle 12 is equipped with in the top of aeration pipe 8, and bar baffle 12 passes through bracing piece and aeration pipe 8 fixed connection, and the width of bar baffle 12 equals with aeration pipe 8's diameter.

In this embodiment, air flows out of the aeration holes 10 into the tank body 1 and floats upwards under the action of buoyancy, and it can be known from the karman vortex street phenomenon that when a steady incoming flow under certain conditions bypasses some objects, two sides of the objects periodically drop out double-row line vortexes which are opposite in rotation direction and are arranged regularly, so that the air needs to bypass the strip-shaped baffle plates 12 in the upward floating process to form double-row line vortexes which are opposite in rotation direction and are arranged regularly, the air has longer contact time with the tank water and larger contact surface in the upward floating process, so that the air can be dissolved into the tank water by oxygen gas, and the activity of aerobic bacteria in the tank body 1 is effectively improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A high-efficiency aeration sewage treatment tank with a defoaming function comprises a tank body (1) and an air supply pump (2) and is characterized in that two semicircular shunt tubes (3) which are horizontally arranged are fixedly connected to the peripheral side wall of the tank body (1), one ends of the semicircular shunt tubes (3) are communicated with the air supply pump (2), a plurality of defoaming pipes (4) which are arranged at equal intervals are fixedly communicated with the lower side wall of the semicircular shunt tubes (3), the lower ends of the defoaming pipes (4) are conical and extend to the water surface in the tank body (1), a plurality of downwards inclined poking needles (5) are fixedly connected to the inner side wall of each defoaming pipe (4), the semicircular shunt tubes (3) are fixedly communicated through a mixing box (6), the outflow ends of the semicircular shunt tubes (3) are opposite to each other, and a condensate screen plate (7) is fixedly connected to the inner side wall of the mixing box (6), many aeration pipes (8) have been arranged to the bottom equidistance of cell body (1), many aeration pipe (8) all communicate with mixing box (6) through air duct (9), aeration hole (10) have been arranged to the surperficial axial equipartition of aeration pipe (8).

2. The efficient aeration sewage treatment pool with the defoaming function according to claim 1, wherein a plurality of the bubble poking needles (5) are arranged in a staggered manner in the defoaming pipe (4).

3. The efficient aeration sewage treatment tank with the defoaming function according to claim 1, wherein a spoiler (11) is arranged in the semi-annular flow dividing pipe (3), and the spoiler (11) is spirally arranged.

4. The high efficiency aeration sewage treatment tank with defoaming function as claimed in claim 1, wherein the positions of aeration holes (10) on two adjacent aeration pipes (8) are opposite.

5. The efficient aeration sewage treatment tank with the defoaming function according to claim 1, wherein a strip-shaped baffle (12) is arranged above the aeration pipe (8), the strip-shaped baffle (12) is fixedly connected with the aeration pipe (8) through a support rod, and the width of the strip-shaped baffle (12) is equal to the diameter of the aeration pipe (8).