CN212102190U

CN212102190U - Denitrification liquid reflux device

Info

Publication number: CN212102190U
Application number: CN202020236747.8U
Authority: CN
Inventors: 张志�; 刘小磊; 张跃府
Original assignee: Shanghai Haowei Environmental Engineering Co ltd
Current assignee: Shanghai Haowei Environmental Engineering Co ltd
Priority date: 2020-03-01
Filing date: 2020-03-01
Publication date: 2020-12-08
Anticipated expiration: 2030-03-01

Abstract

The utility model discloses a denitrification liquid reflux unit connects between good oxygen pond, oxygen deficiency pond and return water tank, denitrification liquid reflux unit includes: the sewage lifting pump is arranged in the anoxic tank and used for conveying the sewage in the anoxic tank to the aerobic tank; the first return pipeline is used for controlling return liquid in the aerobic tank to automatically flow into the return water tank; and the second return pipeline is used for controlling the return liquid in the return water tank to flow into the anoxic tank through the siphonage effect. The utility model has the advantages that: the effect of short-time large flow is generated through pulse siphon, so that the reflux liquid is fully mixed to complete internal circulation, and the purposes of saving energy and mixing and stirring are achieved.

Description

Denitrification liquid reflux device

Technical Field

The utility model belongs to the technical field of environmental engineering water treatment, concretely relates to denitrification liquid reflux unit.

Background

In the existing sewage treatment technology, the sewage treatment is generally carried out by adopting an AO process, which is also called an anoxic-aerobic process, wherein A is an anoxic section and denitrification reaction is carried out to convert nitrate nitrogen into nitrogen; o is an aerobic section for removing organic matters in water and performing nitration reaction to convert ammonia nitrogen into nitrate nitrogen. The anoxic and aerobic combined action denitrogenation is a widely applied water treatment practical technology.

The liquid level of the aerobic tank is lower than that of the anoxic tank generally, but the aerobic tank is required to be at a relatively high position and the anoxic tank is required to be at a relatively low position under some special conditions, and then a self-flowing mode is generally adopted for reflux of the digestion liquid. The sewage treatment process comprises the following steps: sewage enters the anoxic tank to carry out anoxic reaction, effluent water is lifted from the anoxic tank to the aerobic tank through the lifting pump, pollutants in the water are removed by an activated sludge method, nitration reaction is carried out, certain internal circulation is arranged, the sewage in the aerobic tank enters the anoxic tank in a backflow mode, and for the nitration reaction, a stirring device is generally arranged to stir so as to ensure that backflow liquid and the inflow water of the anoxic tank are fully mixed to carry out the denitrification reaction, and the purpose of sewage denitrification is fulfilled.

The existing sewage treatment process needs to add a stirrer in the anoxic tank for stirring, but the stirrer has large power consumption during long-time operation, large operation investment and higher cost. And the damage of the stirrer is hidden and is not easy to be perceived, the water quality of the discharged water is easy to influence, and meanwhile, the normal operation of subsequent facilities is influenced because the installation position of the stirrer is not easy to maintain and the maintenance is long.

Therefore, in order to solve the above problems, it is necessary to provide a denitrification liquid reflux apparatus which avoids various problems caused by the use of a stirrer.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a denitrification liquid reflux unit to solve among the prior art because the problem that uses the mixer stirring to bring.

In order to achieve the above object, an embodiment of the present invention provides the following technical solutions:

in one embodiment, the utility model provides an good oxygen pond fire fighting equipment connects between good oxygen pond, oxygen deficiency pond and return water tank, its characterized in that, denitrification liquid reflux unit includes:

the sewage lifting pump is arranged in the anoxic tank and used for conveying the sewage in the anoxic tank to the aerobic tank;

the first return pipeline is used for controlling return liquid in the aerobic tank to automatically flow into the return water tank;

and the second return pipeline is used for controlling the return liquid in the return water tank to flow into the anoxic tank through the siphonage effect.

Optionally, the first return pipeline includes a water inlet pipe, the water inlet pipe is used for connecting the aerobic tank with the return water tank for the reflux liquid in the aerobic tank to flow into the return water tank automatically.

Optionally, the device is still including set up in the ball valve of intaking on the inlet tube, the ball valve of intaking is used for controlling good oxygen pond flows into the flow of flowing back water tank's backward flow liquid.

Optionally, the second return line includes a siphon, and the siphon is used for connecting the anoxic tank with the return water tank for the reflux in the return water tank to flow into the anoxic tank through siphon action.

Optionally, the device further comprises a water outlet ball valve arranged on the siphon pipe, and the water outlet ball valve is used for controlling the flow of the reflux liquid flowing into the anoxic tank from the reflux water tank.

Optionally, one end of the siphon pipe arranged in the anoxic tank is connected with a water distribution pore plate, and the water distribution pore plate is used for fully mixing the reflux liquid with the water body in the anoxic tank.

Optionally, the water inlet pipe adopts the water pipe of UPVC material.

Optionally, the siphon pipe is made of a UPVC material.

Optionally, the water inlet ball valve is connected with the water inlet pipe through gluing; and/or the interface of the water inlet ball valve and the water inlet pipe is sealed by a sealing ring.

Optionally, the water outlet ball valve is connected with the siphon tube by gluing; and/or the interface of the water outlet ball valve and the siphon pipe is sealed by a sealing ring.

The utility model discloses a first return line control reflux in the good oxygen pond flows in by oneself return water tank to through second return line control reflux in the return water tank flows in through the siphon effect the oxygen deficiency pond utilizes the pulse siphon to produce the large-traffic effect in short time and makes the reflux intensive mixing accomplish internal circulation, reaches the energy saving and mixes the purpose of stirring.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural view of a denitrification liquid reflux apparatus according to an embodiment of the present application.

Description of the drawings: fig. 1 includes: the sewage treatment device comprises a sewage lifting pump 1, a water distribution pore plate 2, an anoxic tank 3, a return water tank 4, an aerobic tank 5, a water inlet ball valve 6, a siphon pipe 7, a water outlet ball valve 8 and a water inlet pipe 9.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. However, the present invention is not limited to the embodiments, and the structural, method, or functional changes made by those skilled in the art according to the embodiments are all included in the scope of the present invention.

Referring to fig. 1, the utility model provides a denitrification liquid reflux unit, the device is connected between good oxygen pond 5, oxygen deficiency pond 3 and return water tank 4, specifically includes: the sewage lifting pump 1 is arranged in the anoxic tank 3, and the sewage lifting pump 1 is used for conveying sewage in the anoxic tank 3 to the aerobic tank 5; the first return pipeline is used for controlling the return liquid in the aerobic tank 5 to automatically flow into the return water tank 4; and the second return pipeline is used for controlling the return liquid in the return water tank 4 to flow into the anoxic tank 3 through the siphonage effect.

Therefore, the denitrification liquid reflux device of this application specifically promotes sewage in the oxygen deficiency pond 3 to the good oxygen pond 5 through sewage lift pump 1 and carries out nitration reaction, and the liquid backward flow is realized with the second return line to rethread first return line to utilize the pulse siphon effect in the second return line to accomplish the liquid stirring in the oxygen deficiency pond 3.

Specifically, the first return pipeline comprises a water inlet pipe 9, and the water inlet pipe 9 is used for connecting the aerobic tank 5 and the return water tank 4 so that the return liquid in the aerobic tank 5 can automatically flow into the return water tank 4. In this scheme, inlet tube 9 can adopt the water pipe of UPVC material.

It should be understood that, since the aerobic tank 5 is located higher than the return water tank 4, the return liquid in the aerobic tank 5 can be automatically flowed into the return water tank 4 through the inlet pipe 9. Meanwhile, in order to control the flow of the reflux liquid flowing into the reflux water tank 4 from the aerobic tank 5, the device also comprises a water inlet ball valve 6 arranged on a water inlet pipe 9. In a specific application, the flow of the reflux liquid can be adjusted by opening or closing the water inlet ball valve 6. In order to improve denitrification liquid reflux unit be life, accessible adhesive bonding between ball valve 6 and the inlet tube 9 of intaking to use the sealing washer sealed at the kneck, thereby can avoid because long-term use leads to ball valve 6 and inlet tube 9 of intaking to leak because of droing.

Specifically, the second return line includes a siphon tube 7, and the siphon tube 7 is used for connecting the anoxic tank 3 and the return tank 4 so that the return liquid in the return tank 4 flows into the anoxic tank 3 through siphon action. In this scheme, siphon 7 can adopt the water pipe of UPVC material.

It will be appreciated that siphoning is a phenomenon of liquid level difference, after filling liquid into an inverted U-shaped tubular structure, the open end is placed in a liquid-filled container, and the liquid in the container will continuously flow out to a lower position through the siphon tube. In this application, the siphon 7 is positioned in the return tank 4 at the end with a high opening, and is positioned in the anoxic tank 3 at the other end. When the reflux in the reflux water tank 4 reaches a certain level, the reflux can be guided into the anoxic tank 3 through the siphon 7. Meanwhile, in order to control the flow of the return liquid flowing into the anoxic pond 3 from the return water tank 4, the device also comprises a water outlet ball valve 8 arranged on the siphon pipe 7. In a specific application, the water outlet ball valve 8 and the siphon pipe 7 can be connected through gluing, and a sealing ring is used for sealing at the interface. Therefore, the flow of the reflux liquid is adjusted by opening or closing the water outlet ball valve 8.

Specifically, in order to enable the pulse siphon to generate a better stirring effect, one end of the siphon 7 arranged in the anoxic tank 3 can be connected with the water distribution pore plate 2. It should be understood that the water distribution pore plate 7 is to arrange the water quantity on a certain working area panel according to a certain rule, and most commonly to distribute water uniformly on the working surface. In this application, utilize water distribution orifice plate 2 can make the water intensive mixing in backward flow liquid and the oxygen deficiency pond 3.

The utility model discloses a first return line control reflux in the good oxygen pond 5 flows in by oneself return water tank 4 to through second return line control reflux in the return water tank 4 flows in through the siphon effect oxygen deficiency pond 3 utilizes pulse siphon to produce the effect of large-traffic short-term making the reflux intensive mixing accomplish internal circulation, reaches the energy saving and mixes the purpose of stirring.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a denitrification liquid reflux unit, connects between good oxygen pond, oxygen deficiency pond and return water tank, its characterized in that denitrification liquid reflux unit includes:

2. The denitrification return apparatus of claim 1, wherein the first return line comprises a water inlet pipe for connecting the aerobic tank and the return water tank so that the return liquid in the aerobic tank flows into the return water tank.

3. The denitrification return apparatus of claim 2, further comprising a water inlet ball valve disposed on the water inlet pipe, wherein the water inlet ball valve is used for controlling the flow of the return water from the aerobic tank into the return water tank.

4. The denitrification return apparatus of claim 1, wherein the second return line includes a siphon for connecting the anoxic tank and the return tank for allowing the return fluid in the return tank to flow into the anoxic tank by siphon action.

5. The denitrification reflux apparatus as claimed in claim 4, wherein the apparatus further comprises a water outlet ball valve provided on the siphon tube for controlling the flow of the reflux liquid from the reflux water tank into the anoxic tank.

6. The denitrification liquid reflux device according to claim 4, wherein one end of the siphon pipe arranged in the anoxic tank is connected with a water distribution pore plate, and the water distribution pore plate is used for fully mixing the reflux liquid with the water in the anoxic tank.

7. The denitrification liquid reflux apparatus as claimed in claim 2, wherein the water inlet pipe is a water pipe made of UPVC material.

8. The denitrification liquid reflux apparatus as claimed in claim 4, wherein the siphon is a water pipe made of UPVC material.

9. The denitrification liquid reflux apparatus as claimed in claim 3, wherein the water inlet ball valve is connected with the water inlet pipe by gluing; and/or the interface of the water inlet ball valve and the water inlet pipe is sealed by a sealing ring.

10. The denitrification liquid reflux apparatus as claimed in claim 5, wherein the water outlet ball valve is connected with the siphon tube by gluing; and/or the interface of the water outlet ball valve and the siphon pipe is sealed by a sealing ring.