CN218058742U

CN218058742U - Small-size domestic sewage treatment equipment with mixer

Info

Publication number: CN218058742U
Application number: CN202221691618.3U
Authority: CN
Inventors: 苗歉; 王君; 夏瑜; 钱鸣飞
Original assignee: Suzhou Capital Jiajing Environmental Protection Technology Co ltd
Current assignee: Suzhou Capital Jiajing Environmental Protection Technology Co ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-12-16
Anticipated expiration: 2032-06-30

Abstract

The utility model discloses a small-size sewage treatment device with mixer belongs to sewage treatment device technical field. The device comprises an anoxic tank, an aerobic tank and a medicine mixing sedimentation tank which are adjacent and integrally arranged in sequence, wherein the bottom of the anoxic tank is communicated with the aerobic tank, and the upper part of the aerobic tank overflows into the medicine mixing sedimentation tank. Through set up a plug-flow formula dive mixer in the oxygen deficiency pond, form two vortex circulations from top to bottom, vortex circulation homoenergetic from top to bottom can play the stirring effect to can erode the sediment blind spot in each corner, wherein vortex circulation is revolved down and can erode the mud that the oxygen deficiency bottom of the pool portion depositedly.

Description

Small-size domestic sewage treatment equipment with mixer

Technical Field

The utility model relates to a small-size domestic sewage treatment device with mixer belongs to sewage treatment device technical field.

Background

The plug-flow submersible mixer is an important sewage treatment stirring machine, is suitable for rural domestic sewage treatment equipment, and is widely applied to biochemical reaction tanks such as anaerobic zones, anoxic tanks, sedimentation tanks, aeration tanks and the like. The plug-flow submersible mixer adopts a jet mode to mix fluid in the sewage tank, and can prevent active sludge rich in microorganisms from sinking at the bottom of the tank, so that the active sludge is suspended in the tank. The stirring effect is best when the fluid velocity in the tank is generally required to be more than 0.1m/s and the average velocity is kept around 0.3 m/s. In this state, the microorganism and the sewage are fully reacted to achieve the mixing and stirring effects.

At present, the plug-flow submersible mixer has some defects in domestic sewage treatment equipment, which is mainly characterized in that only a part of fluid in a water tank is circulated, namely only the fluid in front of the plug-flow submersible mixer is circulated, and solid matters in the tank can be precipitated to form dead zones. At present, the common solution is to replace a plug-flow submersible mixer with a large-diameter and high-power impeller or install a plurality of plug-flow submersible mixers at different positions in the tank, but the mixing effect of the sludge layer with more sediment at the bottom of the tank is not good.

Therefore, the small-sized domestic sewage treatment equipment with the stirrer is designed, and can not only solve the problem of stirring but also solve the problem of forming a stirring dead zone after solid matters are precipitated in the stirring tank through up-down vortex circulation.

Disclosure of Invention

The utility model aims to solve the technical problem that: the utility model provides a small-size domestic sewage treatment equipment with mixer, it has solved the problem that forms the stirring blind spot behind the solid matter sediment in present stirring pond.

The utility model discloses the technical problem that will solve takes following technical scheme to realize:

a small-sized domestic sewage treatment device with a stirrer comprises an anoxic tank, an aerobic tank and a mixed drug sedimentation tank which are sequentially adjacent and integrally arranged, wherein the bottom of the anoxic tank is communicated with the aerobic tank, and the upper part of the aerobic tank overflows into the mixed drug sedimentation tank;

a water inlet is arranged at the upper part of the anoxic pond, and a plug-flow type submersible mixer for horizontal injection is arranged below the liquid level in the anoxic pond;

a vulcanized filler area which vertically partitions the interior of the aerobic tank is arranged in the middle of the aerobic tank, and an aeration disc is arranged at the bottom of the aerobic tank;

the mixed-drug sedimentation tank is internally provided with a mixed-drug pipe, one side of the upper part of the mixed-drug sedimentation tank is provided with a layered water outlet tank, the bottom of the layered water outlet tank is provided with an inclined pipe, the outer side of the layered water outlet tank is provided with a mud discharge port and a water outlet, and the mud discharge port is higher than the water outlet.

As a preferable example, the upper covers are arranged above the anoxic tank, the aerobic tank and the medicine mixing sedimentation tank, and the upper covers are provided with a plurality of access doors.

As a preferred example, a pneumatic stirring pipe is arranged in the anoxic pond.

As a preferred example, the plug-flow submersible mixer is arranged at 1/5-1/3 of the height of the anoxic pond.

The utility model has the advantages that:

(1) The plug-flow submersible mixer is arranged in the anoxic tank to form an upper vortex circulation and a lower vortex circulation, the upper vortex circulation and the lower vortex circulation can play a role in stirring and can wash sedimentation dead zones at corners, and the lower vortex circulation can wash sludge precipitated at the bottom of the anoxic tank;

(2) A pneumatic stirring pipe is arranged in the anoxic tank, and the pneumatic stirring effect is achieved by intermittent starting;

(3) The inclined tube arranged at the bottom of the layered water outlet tank arranged in the medicine mixing sedimentation tank can accelerate sedimentation, and supernatant and floating mud can be discharged through the mud discharge port and the water outlet which are arranged up and down respectively, so that the quality of discharged water can be further improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: the device comprises an anoxic tank 1, a water inlet 101, a plug-flow submersible mixer 102, an aerobic tank 2, a sulfurized filler zone 201, an aeration disc 202, a medicine mixing sedimentation tank 3, a medicine mixing pipe 301, a layered water outlet tank 302, an inclined pipe 303, a sludge discharge port 304, a water outlet 305, an upper cover 4, an access door 401 and a pneumatic stirring pipe 5.

Detailed Description

In order to understand the technical means, creation features, achievement purposes and functions of the present invention easily, the present invention will be further explained by combining with the following embodiments.

Example 1

As shown in figure 1, the small-sized domestic sewage treatment equipment with the stirrer comprises an anoxic tank 1, an aerobic tank 2 and a medicine mixing sedimentation tank 3 which are sequentially adjacent and integrally arranged, wherein the bottom of the anoxic tank 1 is communicated with the aerobic tank 2, and the upper part of the aerobic tank 2 overflows into the medicine mixing sedimentation tank 3.

The upper part of the anoxic pond 1 is provided with a water inlet 101, and a plug-flow submersible mixer 102 which sprays horizontally is arranged below the liquid level in the anoxic pond 1.

A vulcanized filler zone 201 which vertically partitions the interior of the aerobic tank 2 is arranged in the middle of the aerobic tank 2, and an aeration disc 202 is arranged at the bottom of the aerobic tank 2;

the fluidized filler zone 201 is mainly composed of fluidized fillers and a fixed frame, the fluidized fillers are also called MBBR fillers, a three-dimensional hollow filler is adopted as an aerobic biological carrier in an aerobic biological fluidized bed process, and the filler is of a hollow structure. Anaerobic bacteria grow in the filler to generate denitrification effect so as to remove nitrogen; aerobic bacteria grow outside to remove organic matters, and nitrification and denitrification processes exist in the whole treatment process at the same time.

The aeration disc 202 blows air into the aerobic tank 2 through an external blower to accelerate the reaction.

A medicine mixing pipe 301 is arranged in the medicine mixing sedimentation tank 3, a layering water outlet tank 302 is arranged on one side of the upper part of the medicine mixing sedimentation tank 3, an inclined pipe 303 is arranged at the bottom of the layering water outlet tank 302, a sludge discharge port 304 and a water outlet 305 are arranged on the outer side of the layering water outlet tank 302, and the sludge discharge port 304 is higher than the water outlet 305. The inclined pipe 303 arranged at the bottom of the layered water outlet tank 302 arranged in the medicine mixing sedimentation tank 3 and the inclined pipe 303 formed by inclined parallel pipes or parallel pipelines in the medicine mixing sedimentation tank 3 can accelerate sedimentation, supernatant and floating mud can be discharged through the mud discharge port 304 and the water outlet 305 which are arranged up and down respectively, and the quality of discharged water can be further improved.

The equipment can be used for AO process (anoxic and aerobic process) or A ² O process and its improvement. The treatment capacity of the equipment is mainly 5-100T/D, and the effluent of the equipment is of a first-level A or first-level B standard.

The plug-flow submersible mixer 102 is commercially available equipment, and in the sewage treatment equipment with the plug-flow submersible mixer 102, the fluid speed after the plug-flow submersible mixer 102 is used in the anoxic pond 1 is more than 0.1m/s, and the average speed is kept about 0.3 m/s. The plug-flow submersible mixer 102 has a rotation speed adjusting function and a self-protection function, and after matched parameters are adjusted, if the viscosity of a water body is increased or solid impurities are wound on an impeller, the plug-flow submersible mixer 102 can perform self-protection, stop working and send an alarm signal.

The working principle is as follows: through set up a plug-flow type dive mixer 102 in oxygen deficiency pond 1, form two upper and lower vortex circulations, upper and lower vortex circulation homoenergetic is enough played the stirring effect to can erode the deposit blind spot in each corner, wherein the mud of 1 bottom deposit of oxygen deficiency pond can be erodeed in lower vortex circulation. After entering through the bottom of the aerobic tank 2, the sewage enters into the medicine mixing sedimentation tank 3 through the vulcanized filler zone 201 by accelerating the reaction rate through the aeration disc 202. And adding a proper amount of flocculating and precipitating agent through a medicine mixing pipe 301 for precipitation. The supernatant liquid after precipitation enters the layered water outlet tank 302 through the inclined pipe 303, and the supernatant liquid and the floating mud in the layered water outlet tank 302 can be discharged through the mud discharging port 304 and the water outlet 305 which are arranged up and down respectively, so that the quality of the outlet water can be further improved.

Example 2

An upper cover 4 is arranged above the anoxic tank 1, the aerobic tank 2 and the medicine mixing sedimentation tank 3, and the upper cover 4 is provided with a plurality of access doors 401. The other structure is the same as embodiment 1. At least one access door 401 is correspondingly arranged on the anoxic tank 1, the aerobic tank 2 and the medicine mixing sedimentation tank 3 respectively.

The access door 401 can facilitate maintenance personnel to overhaul.

Example 3

The anoxic tank 1 is internally provided with a pneumatic stirring pipe 5. The other structure is the same as embodiment 1.

The stirring part of the anoxic pond 1 is mainly a small plug-flow submersible stirrer 102, and the stirring of the pneumatic stirring pipe 5 is auxiliary. The input voltage of the plug-flow submersible mixer 102 is 220V, and the power is less than 0.75Kw. The plug-flow submersible mixer 102 can adjust the rotating speed according to the volume of the anoxic pond 1. The pneumatic stirring pipe 5 is intermittently opened, so that the problem that the dissolved oxygen in the anoxic tank 1 is too high due to excessive gas stirring to influence the quality of effluent water is avoided.

Set up pneumatic stirring pipe 5 in stirring cell body 1, pneumatic stirring pipe 5 plays pneumatic stirring effect, prevents the dead zone. The pneumatic stirring pipe 5 applied to the anoxic tank 1 can be intermittently opened, so that the phenomenon that the dissolved oxygen in the anoxic tank 1 is too high due to excessive gas stirring to influence the quality of effluent water is avoided.

Through the stirring of plug-flow submersible mixer 102 and the intermittent start and stop of supplementary pneumatic stirring pipe 5, the dead zone can be effectively reduced and the flow rate can be increased.

Example 4

The plug-flow submersible mixer 102 is arranged at 1/5-1/3 of the height of the anoxic pond 1.

The plug-flow submersible mixer 102 is arranged at the middle lower part, which is beneficial to forming large vortex circulation at the upper part and mixing more uniformly; and the injection end of the plug-flow submersible mixer 102 is closer to the settled sludge layer at the bottom, so that the flushing effect is better.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are intended to be included within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a small-size domestic sewage treatment device with mixer, it includes oxygen deficiency pond, good oxygen pond, the sedimentation tank that mixes the medicine that adjacent and integration set up in proper order, oxygen deficiency bottom of the pool portion and good oxygen pond intercommunication, good oxygen pond upper portion overflow get into and mix medicine sedimentation tank, its characterized in that:

the device is characterized in that a medicine mixing pipe is arranged in the medicine mixing sedimentation tank, a layered water outlet tank is arranged on one side of the upper portion of the medicine mixing sedimentation tank, an inclined pipe is arranged at the bottom of the layered water outlet tank, a sludge discharge port and a water outlet are arranged on the outer side of the layered water outlet tank, and the sludge discharge port is higher than the water outlet.

2. The small-sized domestic sewage treatment equipment with the agitator as claimed in claim 1, wherein an upper cover is provided above the anoxic tank, the aerobic tank and the chemical mixing sedimentation tank, and the upper cover is provided with a plurality of access doors.

3. The small-sized domestic sewage treatment apparatus having a stirring machine according to claim 1, wherein a pneumatic stirring pipe is provided in the anoxic tank.

4. The small-sized domestic sewage treatment apparatus with a stirrer according to claim 1, wherein said plug-flow type submersible stirrer is provided at 1/5 to 1/3 of the height of the anoxic tank.