CN217323543U

CN217323543U - A high-efficient oxygen boosting aeration systems for kitchen garbage waste water treatment

Info

Publication number: CN217323543U
Application number: CN202220894194.4U
Authority: CN
Inventors: 胡念; 林晓宏; 乐亮亮; 田弘毅; 沈龙; 李晓燕
Original assignee: Shanghai Liming Resources Reuse Co ltd
Current assignee: Shanghai Liming Resources Reuse Co ltd
Priority date: 2022-04-18
Filing date: 2022-04-18
Publication date: 2022-08-30
Anticipated expiration: 2032-04-18

Abstract

The utility model discloses a high-efficient oxygen boosting aeration systems for kitchen garbage waste water treatment belongs to sewage treatment technical field. The device comprises an oxygen supply unit, an air supply unit, a gas pipeline, a pressure-stabilizing gas mixing tank, an aeration device, an aeration reaction tank and a dissolved oxygen real-time monitoring device, wherein the left side and the right side of the top of a tank body of the pressure-stabilizing gas mixing tank are respectively provided with an air inlet, and an air outlet of the oxygen supply unit is connected to an air inlet on the right side of the pressure-stabilizing gas mixing tank through the gas pipeline; and the air outlet of the air supply unit is connected to the air inlet at the left side of the pressure stabilizing gas mixing tank through another gas pipeline. The utility model provides a high-efficient oxygen boosting aeration systems can improve aeration efficiency, can be used to handle high concentration kitchen garbage waste water.

Description

A high-efficient oxygen boosting aeration systems for kitchen garbage waste water treatment

Technical Field

The utility model relates to a high-efficient oxygen boosting aeration systems for kitchen garbage waste water treatment belongs to sewage treatment technical field.

Background

The kitchen waste wastewater has complex components, high solid content, high ammonia nitrogen content, high concentration wastewater, high pollution degree and difficult treatment. The activated sludge aeration method is a biological treatment technology of kitchen waste and wastewater, and is a main method for biologically treating wastewater by taking activated sludge as a main body. The method mixes and stirs the wastewater and the activated sludge (microorganism) and aerates to decompose the organic pollutants in the wastewater.

Oxygen-enriched aeration is an aeration method in which oxygen (pure oxygen or oxygen-enriched oxygen) is used instead of air for aeration. By adopting the oxygen-enriched aeration mode, the oxygen partial pressure is improved, the saturated oxygen content in water is correspondingly improved, the oxygen transfer rate is accelerated, each aerobic bacterium in the sludge zoogloea in the aeration tank can obtain enough oxygen and nutrients, so that the growth and the propagation are accelerated, the number of microorganisms is increased, the degradation effect of the unit time and the tank capacity on organic matters is accelerated, the treatment capacity is improved as a result, and the efficiency of a biological treatment system is improved.

Disclosure of Invention

The utility model aims at providing a kitchen garbage waste water treatment's high-efficient oxygen boosting aeration equipment, its equipment is simple, convenient operation, can high-concentration kitchen garbage waste water of high-efficient processing.

Based on the above problem, the utility model provides a technical scheme is:

a high-efficiency oxygen-enriched aeration system for kitchen waste wastewater treatment comprises an oxygen supply unit, an air supply unit, a gas pipeline, a pressure-stabilizing gas mixing tank, an aeration device, an aeration reaction tank and a dissolved oxygen real-time monitoring device, wherein the left side and the right side of the top of a tank body of the pressure-stabilizing gas mixing tank are respectively provided with an air inlet, and an air outlet of the oxygen supply unit is connected to an air inlet on the right side of the pressure-stabilizing gas mixing tank through the gas pipeline; the air outlet of the air supply unit is connected to the left air inlet of the pressure stabilizing gas mixing tank through another gas pipeline; the aeration device comprises an aeration pipe and a microporous aeration head arranged on the aeration pipe, one end of the aeration pipe is connected with an air outlet at the bottom end of the pressure stabilizing gas mixing tank, and the other end of the aeration pipe is connected with a plurality of microporous aeration heads; the bottom of the aeration reaction tank is provided with a sludge discharge port, and the microporous aeration heads extend into the bottom of the aeration reaction tank for aeration; the dissolved oxygen real-time monitoring device comprises a dissolved oxygen instrument probe and a programmable logic controller, wherein the dissolved oxygen instrument probe extends into the aeration reaction tank, the other end of the dissolved oxygen instrument is connected with the programmable logic controller, and the programmable logic controller is also connected with gas flow control valves on gas pipelines.

As a preferred example, the oxygen supply unit supplies pure oxygen, and controls the oxygen content in the gas introduced during aeration by adjusting the flow ratio of oxygen to air.

In a preferred embodiment, a gas flow control valve and a gas flow meter are provided on a gas line connecting the oxygen supply unit, the air supply unit, and the pressure-stabilized gas mixing tank.

As a preferable example, the pressure-stabilizing gas mixing tank adopts a hollow tank body, a baffle plate protruding towards the middle is arranged in the tank, oxygen and air respectively enter the gas mixing tank from two sides, form convection flow, then sequentially pass through a narrow, wide and narrow area downwards to form uniform mixed gas, and then the mixed gas is discharged from a gas outlet below.

As a preferable example, the microporous aeration head adopts a tubular aeration head, a plurality of tubular aeration heads are uniformly distributed in the aeration reaction tank, wherein a plurality of micropores for uniformly distributing air are uniformly distributed on the surface of the tubular aeration head.

Compared with the prior art, the utility model has the advantages that:

1. adopt the technical scheme of the utility model, can handle the kitchen garbage waste water of high concentration, adopt the oxygen boosting aeration can effectively improve the dissolved oxygen content in the waste water, for the good oxygen of microorganism provides required oxygen, reduces the purpose of chemical oxygen demand, ammonia nitrogen, total nitrogen in the waste water.

2. The technical scheme of the utility model one set of equipment that can accurate preparation specific concentration oxygen content has been developed, realizes high-efficient aeration through accurate control oxygen content during oxygen boosting aeration, reduces waste water treatment's energy consumption.

Drawings

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

In the figure: the system comprises an oxygen supply unit 1, an air supply unit 2, a first gas pipeline 3, a second gas pipeline 4, a gas flow control valve 5, a gas flowmeter 6, a pressure-stabilizing gas mixing tank 9, an aeration pipe 10, a microporous aeration head 13, an aeration reaction tank 14, an oxygen dissolving instrument probe 15 and a programmable logic controller 16.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand and understand, the present invention is further explained by combining the following specific drawings.

As shown in fig. 1, a high-efficiency oxygen-enriched aeration system for kitchen waste wastewater treatment, which is used for treating kitchen waste wastewater and comprises an oxygen supply unit 1, an air supply unit 2, a gas pipeline, a pressure-stabilized gas mixing tank 9, an aeration device, an aeration reaction tank 14 and a dissolved oxygen real-time monitoring device, wherein the left side and the right side of the top of the tank body of the pressure-stabilized gas mixing tank 9 are respectively provided with an air inlet, and an air outlet of the oxygen supply unit 1 is connected to the right side air inlet of the pressure-stabilized gas mixing tank 9 through the gas pipeline (i.e. a first gas pipeline 3); the air outlet of the air supply unit 2 is connected to the left air inlet of the pressure stabilizing gas mixing tank 9 through another gas pipeline (a second gas pipeline 4); the aeration device comprises an aeration pipe 10 and a microporous aeration head 13 arranged on the aeration pipe 10, one end of the aeration pipe 10 is connected with an air outlet at the bottom end of the pressure stabilizing gas mixing tank 9, and the other end is connected with a plurality of microporous aeration heads 13; a sludge discharge port is arranged at the bottom of the aeration reaction tank 14, and a plurality of microporous aeration heads 13 extend into the bottom of the aeration reaction tank 14 for aeration; the dissolved oxygen real-time monitoring device comprises a dissolved oxygen instrument probe 15 and a programmable logic controller 16, wherein the dissolved oxygen instrument probe 15 extends into the aeration reaction tank 14, the other end of the dissolved oxygen instrument is connected with the programmable logic controller 16 (namely PLC), and the programmable logic controller 16 is also connected with the gas flow control valves 5 on the gas pipelines.

The oxygen supply unit 1 supplies pure oxygen, and controls the oxygen content in the gas during aeration by adjusting the flow ratio of the oxygen and air.

And a gas flow control valve 5 and a gas flowmeter 6 are arranged on gas pipelines connecting the oxygen supply unit 1, the air supply unit 2 and the pressure-stabilizing gas mixing tank 9.

Pressure-stabilizing gas mixing tank 9 adopts the hollow jar body, is equipped with the bellied baffle in the middle of to in, oxygen and air get into the gas mixing tank from both sides respectively, form the convection current backward and loop through narrowly, broad, form even gas mixture and discharge from the gas outlet below behind the constrictive region (jar internal chamber is cylindric, two baffles about being provided with altogether, every baffle is the hoop structure), the purpose reaches the more even purpose with two kinds of gas mixture through the velocity of flow that changes gas.

The microporous aeration head 13 adopts a tubular aeration head, a plurality of tubular aeration heads are uniformly distributed in the aeration reaction tank 14, wherein a plurality of micropores for uniform gas distribution are uniformly distributed on the surface of the tubular aeration head.

The online detection device of the dissolved oxygen instrument is used for monitoring the dissolved oxygen content in the aeration reaction tank 14 in real time and reversely adjusting the oxygen and air flow control valve through the PLC to achieve the optimal dissolved oxygen content.

The working principle is as follows: the pressure-stabilizing gas mixing tank 9 is provided with a left gas inlet, a right gas inlet and a gas outlet, and a baffle plate protruding towards the middle is arranged in the tank. The oxygen supply unit 1 uniformly supplies oxygen to a pressure stabilizing gas mixing tank 9 through a first gas pipeline 3 through a gas flow control valve 5 and a gas flowmeter 6; the air supply unit 2 uniformly supplies air into a pressure stabilizing gas mixing tank 9 through a second gas pipeline 4 by a gas flow control valve 5 and a gas flowmeter 6; oxygen and air respectively enter the pressure stabilizing gas mixing tank 9 from two sides, form convection, downwards sequentially pass through narrow, wide and narrow areas to form uniform mixed gas, and are discharged from a gas outlet at the lower part, so that the aim of mixing the two gases more uniformly is fulfilled by changing the flow rate of the gases; the scheme controls the oxygen content in the mixed gas during aeration by controlling the flow ratio of oxygen and air, and realizes accurate and efficient aeration.

The mixed gas is output from the gas outlet of the pressure-stabilizing gas mixing tank 9 and is conveyed to a plurality of microporous aeration heads 13 through an aeration pipe 10, wherein the microporous aeration heads 13 are uniformly arranged at the bottom of the aeration reaction tank 14, and the oxygen-enriched gas is pumped into the aeration reaction tank 14 through the microporous aeration heads 13 to provide sufficient oxygen for aerobic activities of microorganisms to decompose organic pollutants and nitrogenous substances, so that the chemical oxygen demand and ammonia nitrogen content in the wastewater are reduced. The dissolved oxygen instrument probe 15 is used for monitoring the dissolved oxygen content of the wastewater in the aeration reaction tank 14 in real time and feeding back the content to the PLC end, the PLC is respectively connected with the oxygen flow control valve and the air flow control valve, and the oxygen content in the mixed gas can be adjusted by reversely adjusting the flow of the oxygen and the air so as to achieve the purpose of controlling the optimal dissolved oxygen content in the wastewater.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above 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 fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a high-efficient oxygen boosting aeration systems for kitchen garbage waste water treatment, includes oxygen suppliment unit (1), air supply unit (2), gas line, steady voltage gas mixing jar (9), aeration equipment, aeration reaction pond (14) and dissolved oxygen real-time supervision device, its characterized in that: the left side and the right side of the top of the tank body of the pressure stabilizing gas mixing tank (9) are respectively provided with a gas inlet, and a gas outlet of the oxygen supply unit (1) is connected to a gas inlet on the right side of the pressure stabilizing gas mixing tank (9) through a gas pipeline; the air outlet of the air supply unit (2) is connected to the left air inlet of the pressure stabilizing gas mixing tank (9) through another gas pipeline; the aeration device comprises an aeration pipe (10) and a microporous aeration head (13) arranged on the aeration pipe (10), one end of the aeration pipe (10) is connected with an air outlet at the bottom end of the pressure stabilizing gas mixing tank (9), and the other end of the aeration pipe is connected with a plurality of microporous aeration heads (13); a sludge discharge port is formed at the bottom of the aeration reaction tank (14), and the microporous aeration heads (13) extend into the bottom of the aeration reaction tank (14) for aeration; the dissolved oxygen real-time monitoring device comprises a dissolved oxygen instrument probe (15) and a programmable logic controller (16), wherein the dissolved oxygen instrument probe (15) extends into the aeration reaction tank (14), the other end of the dissolved oxygen instrument is connected with the programmable logic controller (16), and the programmable logic controller (16) is also connected with gas flow control valves (5) on all gas pipelines.

2. The high-efficiency oxygen-enriched aeration system for kitchen waste and wastewater treatment according to claim 1, characterized in that: the oxygen supply unit (1) supplies pure oxygen, and controls the oxygen content in the introduced gas during aeration by adjusting the flow ratio of the oxygen and air.

3. The efficient oxygen-enriched aeration system for kitchen waste wastewater treatment according to claim 1, characterized in that: and a gas flow control valve (5) and a gas flowmeter (6) are arranged on a gas pipeline which is connected with the oxygen supply unit (1), the air supply unit (2) and the pressure-stabilizing gas mixing tank (9).

4. The high-efficiency oxygen-enriched aeration system for kitchen waste and wastewater treatment according to claim 1, characterized in that: the pressure-stabilizing gas mixing tank (9) adopts a hollow tank body, a baffle protruding towards the middle is arranged in the tank, oxygen and air enter the gas mixing tank from two sides respectively, form convection flow and then sequentially pass through a narrow, wide and narrow area downwards to form uniform mixed gas to be discharged from a gas outlet below.

5. The efficient oxygen-enriched aeration system for kitchen waste wastewater treatment according to claim 1, characterized in that: the microporous aeration heads (13) adopt tubular aeration heads, a plurality of tubular aeration heads are uniformly distributed in the aeration reaction tank (14), and a plurality of micropores for uniformly distributing air are uniformly distributed on the surfaces of the tubular aeration heads.