CN215161433U

CN215161433U - High-efficient denitrogenation pilot plant of lactam waste water

Info

Publication number: CN215161433U
Application number: CN202121253595.3U
Authority: CN
Inventors: 王晓龙
Original assignee: Tianjin Dexin Petrochemical Equipment Co ltd
Current assignee: Tianjin Dexin Petrochemical Equipment Co ltd
Priority date: 2021-06-07
Filing date: 2021-06-07
Publication date: 2021-12-14
Anticipated expiration: 2031-06-07

Abstract

The utility model relates to a high-efficient denitrogenation pilot scale device of lactam waste water, including source water pitcher, HNR reactor and production water pitcher, the source water pitcher passes through connecting line with the HNR reactor and is connected, the HNR reactor passes through another connecting line with the production water pitcher and is connected, source water pitcher and water inlet pipe connection, wherein, set up air water on the HNR reactor and jointly wash the subassembly. The utility model provides a pair of high-efficient denitrogenation pilot scale device of lactam waste water through the setting of air water joint cleaning subassembly, can be with the abluent more thorough of HNR reactor.

Description

High-efficient denitrogenation pilot plant of lactam waste water

Technical Field

The utility model belongs to the technical field of the waste water denitrogenation, concretely relates to high-efficient denitrogenation pilot plant of lactam waste water.

Background

The existing caprolactam factory sewage process adopts the defects of high methanol consumption, large sludge reflux amount, high energy consumption, large sludge yield and the like of the traditional A/O denitrification process, and has larger methanol consumption due to the influence of factors such as anoxic environment, mixing degree and the like in actual operation on the treatment of low-carbon high-nitrogen sewage.

In addition, the HNR reactor of the prior high-efficiency denitrification device for the lactam wastewater only has a water washing component, and the water washing method cannot deeply clean the HNR reaction.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a high-efficient denitrogenation pilot scale device of lactam waste water, including source water pitcher, HNR reactor and production water pitcher, the source water pitcher passes through connecting line with the HNR reactor and is connected, the HNR reactor passes through another connecting line with the production water pitcher and is connected, source water pitcher and water inlet line are connected, wherein, set up air water on the HNR reactor and jointly wash the subassembly.

Preferably, the air-water combined cleaning assembly comprises an air washing assembly and a water washing assembly.

In any of the above schemes, preferably, the water washing component comprises a backwash water pump, a liquid inlet end of the backwash water pump is connected with the water production tank through a backwash pipeline, a liquid outlet end of the backwash water pump is connected with the HNR reactor through a backwash backflow pipeline, and the HNR reactor is provided with a backwash drainage pipeline.

In any of the above schemes, preferably, the gas washing component is a backwash fan, and the backwash fan is connected with the HNR reactor through a backwash air inlet pipeline.

In any of the above schemes, preferably, the backwash blower is a roots blower.

In any of the above schemes, preferably, a nitrate charging line and a sodium acetate charging line are arranged on a connecting line between the source water tank and the HNR reactor.

In any of the above schemes, preferably, an overflow line is arranged on the water production tank.

The utility model has the advantages that: the utility model provides a pair of high-efficient denitrogenation pilot scale device of lactam waste water through the setting of air water joint cleaning subassembly, can be with the abluent more thorough of HNR reactor.

Drawings

FIG. 1 is a schematic view of a preferred embodiment of a pilot plant for efficiently denitrifying lactam waste water according to the present invention.

The figures are labeled as follows: 1-a source water tank; a 2-HNR reactor; 3-a water production tank; 4-backwashing water pump; 5-backwashing the fan; 6-water inlet pipeline; 7-connecting lines; 8-backwashing the drain line; 9-an overflow line; 10-backwash line; 11-backwash return line; 12-backwash air intake line; 13-nitrate liquid feeding pipeline; 14-sodium acetate addition line.

Detailed Description

In order to further understand the present invention, the present invention will be described in detail with reference to the following embodiments.

Example one

As shown in figure 1, the utility model provides a high-efficient denitrogenation pilot scale device of lactam waste water, including source water pitcher 1, HNR reactor 2 and product water jar 3, source water pitcher 1 is connected through connecting line 7 with HNR reactor 2, HNR reactor 2 is connected through another connecting line with product water jar 3, source water pitcher 1 is connected with intake pipe 6, wherein, set up the air water on HNR reactor 2 and unite the washing subassembly, the air water unites the washing subassembly and can carry out more efficient washing through gas and water to HNR reactor 2, the air water unites the washing subassembly and includes gas washing subassembly and washing subassembly, the washing subassembly includes backwash water pump 4, the inlet end of backwash water pump 4 is connected with product water jar 3 through backwash pipeline 10, the play liquid end of water pump is connected with HNR reactor 2 through backwash backflow pipeline 11, the HNR reactor 2 is provided with a back washing drainage pipeline 8, the gas washing component is a back washing fan 5, the back washing fan 5 is connected with the HNR reactor 2 through a back washing air inlet pipeline 12, the back washing fan 5 is a Roots fan, a nitrate liquid adding pipeline 13 and a sodium acetate liquid adding pipeline 14 are arranged on a connecting pipeline 7 between the source water tank 1 and the HNR reactor 2, and an overflow pipeline 9 is arranged on the water production tank 3.

Example two

The using method of the embodiment comprises the following steps:

a water production flow:

the water inlet pipeline 6 is connected to the MBR water outlet pipeline and enters the utility model, the incoming water enters the raw water tank 1, the raw water tank 1 is provided with a liquid level meter, the liquid level meter is interlocked with the water inlet valve through the liquid level meter, the valve is closed when the high position is reached, the valve is opened when the low position is reached, meanwhile, the liquid level meter is interlocked with the water inlet pump, the automatic starting is carried out when the high position is reached, and the automatic stopping is carried out when the low position is reached;

raw water in a raw water tank is lifted by a water pump and then enters an HNR reactor 2, two dosing points are arranged on a connecting pipeline 7, sodium nitrate and sodium acetate are respectively dosed through two metering pumps, the nitrogen content of inlet water is improved by adding the sodium nitrate, and the sodium acetate is dosed as a carbon source to participate in denitrification reaction; wherein the sodium acetate dosing pump automatically controls the dosing amount through a PLC system; the dosage of the sodium nitrate dosing pump is manually adjusted;

the effluent of the HNR reactor 2 enters a water production tank 3, and the effluent overflows to a water drainage point at a high liquid level;

and (3) backwashing flow:

and (3) backwashing integral flow: stopping water production, gas washing, air-water combined washing, water washing, recovering water production and stopping water production, stopping a pump of a raw water pump, closing a water production valve, and opening a backwashing water valve;

air washing: an air source is provided by 1 roots blower (backwashing blower 5) on site, the air quantity is controlled by the frequency converter and the vortex shedding flowmeter in a linkage manner, and the air quantity and the air washing time can be set in the PLC parameter setting unit by an operator. Air-water combined washing: after the gas washing starts 120S time, start backwash water pump 4, carry out air water and jointly wash, from producing water tank water intaking, promote through backwash water pump 4 and get into the HNR reactor and wash, control the water yield through converter and electromagnetic flowmeter interlock, operating personnel can set up water yield and washing time in the PLC parameter setting unit, reach the gas washing after setting for time, and the gas washing stops, and the roots fan is shut down, and the washing continues, and air water jointly washes 1 minute.

Washing with water: and after the air washing is stopped, the water washing is continued, and when the set time of the water washing is reached, the pump of the backwashing water pump 4 is stopped, the water washing is stopped, and the water washing time is 2 minutes.

Washing: starting a water inlet pump, lifting raw water in a raw water tank 3, entering an HNR reactor 2 for flushing, closing a backwashing valve and opening a water production valve after the set flushing time is reached, and recovering normal water production.

It will be understood by those skilled in the art that the present invention relates to a pilot plant for high-efficiency denitrification of lactam waste water, which comprises the above-mentioned portions of the present invention, and any combination of the portions shown in the drawings, and is limited to space and not described in any combination for the sake of brevity. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a high-efficient denitrogenation pilot scale device of lactam waste water, includes source water pitcher, HNR reactor and produces the water pitcher, the source water pitcher passes through the connecting line with the HNR reactor and is connected, the HNR reactor with produce the water pitcher through another connecting line connection, source water pitcher and water inlet pipe connection, its characterized in that, set up the air water on the HNR reactor and jointly wash the subassembly.

2. The pilot plant for the high-efficiency denitrification of lactam wastewater according to claim 1, wherein the gas-water combined cleaning assembly comprises a gas washing assembly and a water washing assembly.

3. The pilot plant for the efficient denitrification of lactam wastewater according to claim 2, wherein the washing component comprises a backwash water pump, the liquid inlet end of the backwash water pump is connected with the water production tank through a backwash pipeline, the liquid outlet end of the backwash water pump is connected with the HNR reactor through a backwash backflow pipeline, and the HNR reactor is provided with a backwash water discharge pipeline.

4. The pilot plant for the high-efficiency denitrification of the lactam wastewater according to claim 3, wherein the gas washing component is a backwashing fan, and the backwashing fan is connected with the HNR reactor through a backwashing gas inlet line.

5. The pilot plant for the high-efficiency denitrification of the lactam wastewater as claimed in claim 4, wherein the backwashing fan is a Roots fan.

6. The pilot plant for the high-efficiency denitrification of lactam wastewater according to claim 1, wherein a nitrate charging line and a sodium acetate charging line are arranged on a connecting line between the source water tank and the HNR reactor.

7. The pilot plant for the high-efficiency denitrification of lactam wastewater according to claim 1, wherein an overflow line is arranged on the water production tank.