CN202594818U - Waste water ammonia nitrogen blowoff reaction device - Google Patents

Abstract

A waste water ammonia nitrogen blow-off treatment reaction device, including a shell, in which a gas-water separation layer, a water distribution device, an umbrella-shaped waterproof cover, and an air distribution device are arranged at intervals from top to bottom in the shell, and the umbrella-shaped waterproof cover separates the shell There are two upper and lower chambers. The bottom shell of the upper chamber is provided with a drain pipe. The water distribution device is composed of a water inlet pipe, an air inlet pipe, and a two-fluid nozzle. The lower two-fluid nozzle constitutes a three-way structure, which effectively avoids the waste of gas and liquid caused by the use of the packing layer for gas-liquid mixing, effectively prevents the wall flow phenomenon of the ditch, and improves the stability of the ammonia nitrogen blow-off treatment.

Description

A kind of waste water ammonia nitrogen stripping treatment reaction device

technical field

The utility model relates to waste water treatment equipment in the field of environmental protection, in particular to a waste water ammonia nitrogen blow-off treatment reaction device.

Background technique

With the vigorous development of petrochemical, pharmaceutical, pesticide and fine chemical industries, a large amount of high-concentration ammonia nitrogen wastewater is produced in the process of chemical production. If such wastewater is discharged directly without treatment, it will cause great damage to the water environment.

At present, the treatment methods for high-concentration industrial ammonia-nitrogen wastewater mainly include: stripping method, steam stripping method, ammonia distillation method, and chemical precipitation method. Among them, the chemical precipitation method has not yet been applied in large-scale engineering due to its high operating cost and complicated operation; the three methods of air stripping, stripping, and ammonia distillation are widely used in wastewater treatment as traditional ammonia removal processes. Ammonia distillation has a better deamination effect, but it requires higher equipment requirements and higher investment and operation costs; while stripping and stripping methods have lower requirements for processing equipment, and are conventional packed towers or plate separation equipment , for example, Chinese patent CN201110363900.9 discloses a kind of ammonia nitrogen stripping and absorbing integrated tower, which is characterized in that a gas-water separator is arranged on the upper part of the tower body, and an absorption cloth is arranged in turn on the lower part of the gas-water separator. Water tank, umbrella-shaped waterproof cover, sewage water distributor, first filling area, second filling area, the return pipe is set on one side of the umbrella-shaped waterproof cover, and the fan interface is set on the lower side of the second filling area. Above, the water outlet is set on the lower side of the tower body, which still adopts the packing method to achieve the purpose of gas-water mixing. When the waste water flows through the packing layer, it cannot fully mix with the gas, and more gas-liquid is required, and it is easy to The phenomenon of ditch wall flow is generated, which affects the blow-off effect; another example is the Chinese patent ZL200720006185.2 which discloses an ammonia nitrogen blow-off device, which is provided with a circular cylinder, and a water inlet pipe and a lifting ring are arranged on the upper part of the circular cylinder. There is an exhaust port on the top of the cylinder, a diffuser head, a sieve plate, a support block and a manhole at the outlet of the water inlet pipe, the inlet of the diffuser head is connected to the water inlet pipe, and an air inlet pipe, a support An upper ceramic Pall ring and a lower ceramic Pall ring are arranged in the inner cavity of the circular cylinder, an upper support beam is arranged under the upper ceramic Pall ring, and an upper ceramic Pall ring is arranged between the upper ceramic Pall ring and the support beam. There are ceiling panels and support blocks. A lower support beam is provided under the lower ceramic Pall ring, and a lower flower plate and a support block are provided between the lower ceramic Pall ring and the lower support beam. Through the ceramic Pall ring equivalent to the packing in the inner cavity of the circular cylinder, thereby To achieve the purpose of gas-liquid mixing, the required gas-liquid is still more, the serious wall flow phenomenon in the ditch leads to high energy consumption, and the removal effect is unstable, which needs to be improved.

Chinese patent CN1600693A high-efficiency deamination tower, aiming at the characteristics of the ammonia nitrogen stripping agent, designed the ammonia nitrogen stripping tower with one of bubble cap, float valve, sieve plate, tongue shape and grid plate as the tray. Although this kind of equipment The total gas-liquid ratio is reduced, but there will be channel flow and wall flow phenomenon, which needs to be improved.

Contents of the invention

Aiming at the deficiencies of the prior art, the utility model provides a waste water ammonia-nitrogen blow-off treatment reaction device that does not need to be provided with a packing layer, requires less gas and liquid, and has low energy consumption.

In order to solve the above technical problems, the utility model provides the following technical solutions: a waste water ammonia nitrogen blow-off treatment reaction device, including a shell, in which a gas-water separation layer, a water distribution device, an umbrella-shaped Waterproof cover, air distribution device, the umbrella-shaped waterproof cover divides the shell into upper and lower chambers, and a drain pipe is arranged on the bottom of the upper chamber. Composition, the water inlet pipe is connected with the air inlet pipe, and the connection point is provided with a downward-facing dual-fluid nozzle to form a three-way structure.

As a further improvement of the utility model, the three-way structure is a straight pipe, with water inlet pipes and air inlet pipes on both sides, and a two-fluid nozzle is arranged at the junction of the water inlet pipe and the air inlet pipe.

As a further improvement of the utility model, the gas distribution device is composed of an air inlet pipe arranged on the side wall of the lower chamber shell, and at least one gas distributor connected with the air inlet pipe.

As a further improvement of the utility model, the air distribution device is composed of an air inlet pipe arranged on the side wall of the lower chamber shell, and several evenly arranged sheet-shaped spiral cylinders arranged directly opposite the air inlet pipe. Through this setting, the air entering from the intake pipe passes through the helical diversion characteristics of the helical column, changing the flow direction of the gas to directly generate an upward airflow, and greatly expanding the air distribution space, filling the entire lower chamber with air, and improving the air distribution efficiency .

As a further preference of the present invention, the number of sheet-like spiral cylinders is 24-32/m ² . Through this optimization, the sheet-shaped spiral cylinders are arranged according to the minimum air resistance and the maximum gas uniform distribution effect, which greatly improves the gas distribution efficiency.

As a further improvement of the utility model, the water inlet pipe is connected to the water inlet pump, and the air inlet pipe is connected to the air compressor.

As a further improvement of the utility model, the inlet pressure of the water inlet pipe is 0.1-0.5MPa, and the inlet pressure of the inlet pipe is 0.1-0.5MPa. Through this setting, the waste water is fully mixed with the air, and the injection pressure of the dual-fluid nozzle is provided. .

As a further preference of the present utility model, the water inlet pressure of the water inlet pipe is 0.3MPa, and the inlet pressure of the air inlet pipe is 0.3MPa.

As a further improvement of the utility model, the gas distributor is a hollow chamber, and a number of evenly distributed air distribution holes are opened on one surface of the chamber. Through this setting, the gas is effectively divided, diverted, and evenly distributed.

As a further improvement of the utility model, the air distribution holes are elongated slotted holes or circular through holes.

In order to better explain the technical solution of the utility model, the working principle of the utility model is introduced in detail below: when the ammonia nitrogen blow-off operation is performed, the water inlet pump injects waste water into the water inlet pipe, and the waste water and the waste water injected into the inlet pipe by the air compressor The air collides and mixes, and after the gas and liquid are fully contacted, it is sprayed downwards from the dual-fluid nozzle; at the same time, the air is pumped into the intake pipe at the bottom of the shell of the waste water ammonia nitrogen stripping treatment device, and the air passes through the inlet pipe connected to the intake pipe. The air distributor divides, diverts, distributes evenly, and flows upwards to form a reverse flow with the downwardly sprayed wastewater, so that it can fully contact with the wastewater and quickly take away the gas ammonia escaping from the tiny droplets, and finally After the gas-liquid separation is carried out by the gas-liquid separation layer on the uppermost layer of the shell, the relatively dry mixed gas enters the ammonia absorption device, so as to achieve the purpose of blowing ammonia efficiently.

Beneficial effects of the utility model: the utility model sets a water distribution device with a three-way structure, uses the water inlet pipe and the air inlet pipe to mix the gas and liquid, and sprays through the double-fluid nozzle to fully mix the gas and liquid in the upper chamber, effectively avoiding It avoids the waste of gas and liquid caused by gas-liquid mixing by using the packing layer, effectively prevents the channel wall flow phenomenon, and improves the stability of ammonia nitrogen stripping treatment.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic structural diagram of the gas distributor.

Fig. 3 is a schematic structural view of Embodiment 2 of the present utility model.

Detailed ways

Embodiment 1: A waste water ammonia nitrogen blow-off treatment reaction device as shown in Fig. 1 and Fig. 2, comprising a shell 1, in which a gas-water separation layer 2 and a water distribution device 3 are sequentially arranged from top to bottom , an umbrella-shaped waterproof cover 4, an air distribution device 5, the umbrella-shaped waterproof cover 4 divides the housing 1 into two upper and lower chambers (101, 102), the upper chamber 101 is provided with a drain pipe 6 on the bottom of the housing 1, and the cloth The water device 3 is composed of a water inlet pipe 301, an air inlet pipe 302, and a two-fluid nozzle 303. The water inlet pipe 301 communicates with the air inlet pipe 302, and the two-fluid nozzle 303 facing downward is arranged at the connection to form a three-way structure, and the three-way structure It is in a straight tubular shape, with water inlet pipe 301 and air inlet pipe 302 on both sides, and the dual-fluid nozzle 303 is arranged at the junction of water inlet pipe 301 and air inlet pipe 302. The air distribution device 5 is provided on the side wall of the lower chamber 102 shell The air inlet pipe 501 is composed of at least one gas distribution device 502 connected to the air inlet pipe 501. The water inlet pipe 301 is connected to the water inlet pump, and the air inlet pipe 302 is connected to the air compressor. The water inlet pressure of the water inlet pipe 301 is 0.1-0.5MPa. The inlet pressure is 0.1-0.5MPa, the water inlet pressure of the water inlet pipe 301 is preferably 0.3MPa, the inlet pressure of the inlet pipe 302 is preferably 0.3MPa, the gas distribution device 502 is a hollow chamber, and there are several uniform holes on the surface of the chamber. Distributed air distribution holes 503, the air distribution holes 503 are elongated slots or circular through holes.

Embodiment 2: With reference to Embodiment 1, a kind of waste water ammonia nitrogen blow-off treatment reaction device, described air distribution device 5 is arranged on the air inlet pipe 501 on the side wall of the lower chamber 102 shell, and is arranged right against the air inlet pipe 501 It is composed of several evenly arranged sheet-like spiral cylinders 504, and the number of sheet-like spiral cylinders is 24-32 pieces/m ² .

The wastewater ammonia nitrogen blow-off treatment reaction device of the utility model can adopt single-stage or multi-stage serial arrangement.

Claims (10)

1. ammonia nitrogen in waste water stripping processing reaction device; Comprise housing; Be laid with gas-water separation layer, water-distributing device, umbrella bucker, distribution device in the housing from top to bottom successively at interval, the umbrella bucker is separated into two chambers up and down with housing, and upper chamber's bottom shell is provided with water shoot; It is characterized in that water-distributing device is made up of water inlet pipe, inlet pipe, two-fluid spray nozzle, described water inlet pipe is communicated with inlet pipe, connection place is provided with direction two-fluid spray nozzle down and constitutes three-port structure.

2. a kind of ammonia nitrogen in waste water stripping processing reaction device according to claim 1 is characterized in that said three-port structure is a straight tube-like, and both sides are respectively water inlet pipe and inlet pipe, two-fluid spray nozzle are arranged at water inlet pipe and inlet pipe junction.

3. a kind of ammonia nitrogen in waste water stripping processing reaction device according to claim 1 is characterized in that distribution device is made up of one the distribution device in gas-fluid of being at least that is arranged at inlet pipe on the lower chambers housing sidewall, be connected with inlet pipe.

4. a kind of ammonia nitrogen in waste water stripping processing reaction device according to claim 1 is characterized in that distribution device is made up of several evenly distributed sheet spiral cylinders that are arranged at inlet pipe on the lower chambers housing sidewall, be provided with over against inlet pipe.

5. a kind of ammonia nitrogen in waste water stripping processing reaction device according to claim 4 is characterized in that sheet spiral cylinder quantity is 24-32/m ²

6. a kind of ammonia nitrogen in waste water stripping processing reaction device according to claim 1 is characterized in that water inlet pipe connects intake pump, and inlet pipe connects air.

7. a kind of ammonia nitrogen in waste water stripping processing reaction device according to claim 6 is characterized in that the water inlet pipe intake pressure is 0.1-0.5MPa, and suction press is 0.1-0.5MPa.

8. a kind of ammonia nitrogen in waste water stripping processing reaction device according to claim 7 is characterized in that the water inlet pipe intake pressure is 0.3MPa, and the inlet pipe intake pressure is 0.3MPa.

9. a kind of ammonia nitrogen in waste water stripping processing reaction device according to claim 3 is characterized in that distribution device in gas-fluid is a hollow chamber, and chamber one surface offers several equally distributed qi-emitting holes.

10. a kind of ammonia nitrogen in waste water stripping processing reaction device according to claim 9 is characterized in that qi-emitting hole is long strip shape slotted eye or manhole.

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