CN212770193U - Organic tubular membrane waste acid recovery filtration processing system - Google Patents

Abstract

The utility model discloses an organic tubular membrane spent acid recovery filtration processing system, including waste water equalizing basin, one-level retort, tubular membrane subassembly and pressure filter, one side of concentrated water tank through elevator pump and water pipe with one side of intaking of tubular membrane subassembly is connected, and the opposite side through pneumatic diaphragm pump and water pipe with the pressure filter is connected, the play water one side of tubular membrane subassembly still has the washing water tank through water piping connection, wash the water tank through circulating pump and water pipe with one side of intaking of tubular membrane subassembly is connected, there is the neutralization pond bottom of tubular membrane subassembly through water piping connection. The organic tubular membrane waste acid recovery and filtration treatment system adopts the treatment process of the tubular microfiltration membrane and the plate-and-frame filter press, the operation cost is greatly reduced, meanwhile, the thorough solid-liquid separation can be realized through the filter press, the solid particles can be recycled, the solid waste can be recycled, the recovery rate is close to 100%, and the discharge of waste water is reduced.

Description

Organic tubular membrane waste acid recovery filtration processing system

Technical Field

The utility model belongs to the technical field of waste acid recovery filters, concretely relates to organic tubular membrane waste acid recovery filtration processing system.

Background

The metal surface treatment industry, the metal part pickling industry, the electroplating industry and other industries generate waste acid in the production and processing process, and particularly the chemical industry generates a large amount of waste acid, such as waste sulfuric acid, waste hydrochloric acid, waste nitric acid, waste phosphoric acid or mixed acid and the like. If the waste acid is directly discharged, not only a great deal of waste is caused, but also great pressure is caused on ecological environment protection. Therefore, the waste acid needs to be treated and recycled to a workshop for reuse. The waste acid treatment refers to effective separation of soluble substances existing in the dilute acid solution, and the waste acid can be recycled after purification. The waste acid recovery and filtration device in the current market also has the problems of high operation cost, low recovery rate and more discharged wastewater.

Disclosure of Invention

An object of the utility model is to provide an organic tubular membrane waste acid recovery filtration processing system to solve the problem that the running cost is high, the rate of recovery is low and outer waste water is many.

In order to achieve the above object, the utility model provides a following technical scheme: an organic tubular membrane waste acid recovery and filtration treatment system comprises a waste water regulating tank, a primary reaction tank, a tubular membrane component and a filter press, one side of the wastewater adjusting tank is connected with the primary reaction tank through a lifting pump and a water pipe, one side of the primary reaction tank is provided with a secondary reaction tank, one side of the second-stage reaction tank is provided with a concentrated water tank, one side of the concentrated water tank is connected with the water inlet side of the tubular membrane component through a lift pump and a water pipe, and the other side is connected with the filter press through a pneumatic diaphragm pump and a water pipe, the water outlet side of the tubular membrane component is connected with the concentrated water tank through a water pipe, the water outlet side of the tubular membrane component is also connected with a cleaning water tank through a water pipe, the cleaning water tank is connected with the water inlet side of the tubular membrane component through a circulating pump and a water pipe, and the bottom of the tubular membrane component is connected with a neutralization pond through a water pipe.

Preferably, a plurality of flocculating agents are added into the primary reaction tank.

Preferably, a plurality of NaOH or lime is added into the secondary reaction tank.

Preferably, a liquid level meter is arranged in the concentrated water tank and electrically connected with a lifting pump on one side of the concentrated water tank.

Preferably, the washing water tank comprises an acid washing tank, an alkaline washing tank and a fresh water tank, and a washing valve is arranged on the outer side of the washing water tank.

Preferably, the filter press is a plate and frame filter press, a sludge concentration tank is further arranged on one side of the filter press, and the top and the bottom of the sludge concentration tank are respectively connected with the concentration water tank and the filter press through pipelines.

The utility model discloses a technological effect and advantage: the organic tubular membrane waste acid recovery and filtration treatment system adopts the treatment process of the tubular microfiltration membrane and the plate-and-frame filter press, the operation cost is greatly reduced, meanwhile, the thorough solid-liquid separation can be realized through the filter press, the solid particles can be recycled, the solid waste can be recycled, the recovery rate is close to 100%, and because no chemical agent is added in the solid-liquid separation process, the supernatant and the filter press filtrate can directly flow back to the wastewater regulating tank, so that the wastewater discharge is reduced.

Drawings

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

In the figure: 1-a wastewater adjusting tank, 2-a first-stage reaction tank, 3-a second-stage reaction tank, 4-a concentration water tank, 5-a tubular membrane component, 6-a lifting pump, 7-a neutralization tank, 8-a cleaning water tank, 9-a circulating pump, 10-a pneumatic diaphragm pump, 11-a sludge concentration tank and 12-a filter press.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides an organic tubular membrane waste acid recovery and filtration treatment system as shown in the figure, which comprises a waste water adjusting tank 1, a primary reaction tank 2, a tubular membrane component 5 and a filter press 12, wherein one side of the waste water adjusting tank 1 is connected with the primary reaction tank 2 through a lift pump 6 and a water pipe, one side of the primary reaction tank 2 is provided with a secondary reaction tank 3, one side of the secondary reaction tank 3 is provided with a concentrated water tank 4, one side of the concentrated water tank 4 is connected with the water inlet side of the tubular membrane component 5 through the lift pump 6 and the water pipe, the other side is connected with the filter press 12 through a pneumatic diaphragm pump 10 and a water pipe, the water outlet side of the tubular membrane component 5 is connected with the concentrated water tank 4 through the water pipe, the water outlet side of the tubular membrane component 5 is also connected with a cleaning water tank 8 through the water pipe, the cleaning water tank 8 is connected with the water inlet side of the tubular membrane component 5, the bottom of the tubular membrane component 5 is connected with a neutralization tank 7 through a water pipe.

In addition, a plurality of flocculating agents are added into the primary reaction tank 2, and the flocculating agents are iron or calcium in some forms, so that the suspended matters in the wastewater are precipitated. A plurality of NaOH or lime is added in the secondary reaction tank 3, so that the PH can be favorably adjusted by utilizing the NaOH or the lime, and then the effluent of the secondary reaction tank 3 flows into the concentrated water tank 4 by gravity, so that the solid-liquid separation is started. The improved sewage treatment device is characterized in that a liquid level meter is arranged in the concentrated water tank 4, the liquid level meter is electrically connected with the lifting pump 6 on one side of the concentrated water tank 4, the starting and stopping of the lifting pump 6 are controlled by the liquid level meter, the water solid concentration of the water pumped to the tubular membrane assembly 5 is guaranteed to be 2-5%, the solid is dehydrated automatically, the solid in the concentrated water tank 4 is pumped to a sludge concentration tank 11 or a filter press 12 by a pneumatic diaphragm pump 10, and the period and the frequency of the pneumatic diaphragm pump 10 are controlled automatically.

It is worth mentioning that the washing water tank 8 comprises an acidic washing tank, an alkaline washing tank and a fresh water tank, a washing valve is arranged outside the washing water tank 8, and an operator manually controls the connection with each washing tank through the washing valve, wherein the acidic washing liquid is used for washing inorganic dirt, the NaClO is used for removing organic matters, and the membrane needs to be washed by fresh water before being put into operation again. The filter press 12 is a plate-and-frame filter press, a sludge concentration tank 11 is further arranged on one side of the filter press, and the top and the bottom of the sludge concentration tank 11 are respectively connected with the concentration water tank 4 and the filter press 12 through pipelines, so that further dehydration treatment can be performed on sludge discharged from the concentration water tank 4.

The working principle is as follows: when the organic tubular membrane waste acid recovery and filtration treatment system is used, firstly, the waste water in the waste water regulating tank 1 is conveyed to the primary reaction tank 2 for precipitation, then the sludge is conveyed to a secondary reaction tank 3 for pH value adjustment, then the sludge in a concentrated water tank 4 is pumped into the middle of a membrane pipe of a tubular membrane component 5 at a high speed by a lifting pump 6 by utilizing a cross flow filtration technology, then returning to a concentration water tank 4, leading clarified water or permeate water to a neutralization pond 7 after passing through a tubular membrane module 5, concentrating sludge a little after passing through the membrane once, pumping the solid in the concentration water tank 4 to a sludge concentration pond 11 or a filter press 12 by a pneumatic diaphragm pump 10, inorganic dirt is cleaned by acidic cleaning liquid in the cleaning water tank 8, NaClO is used for removing organic matters, before the membrane is put into operation again, the rapid blockage or the fouling of the membrane can be effectively prevented by flushing the membrane with fresh water, so that the blockage in the membrane hole or on the membrane surface is forced to return to the sludge flow.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (6)

1. The utility model provides an organic tubular membrane waste acid recovery filtration processing system, includes waste water equalizing basin (1), one-level retort (2), tubular membrane subassembly (5) and pressure filter (12), its characterized in that: one side of the waste water adjusting tank (1) is connected with the first-stage reaction tank (2) through a lifting pump (6) and a water pipe, one side of the first-stage reaction tank (2) is provided with a second-stage reaction tank (3), one side of the second-stage reaction tank (3) is provided with a concentrated water tank (4), one side of the concentrated water tank (4) is connected with the water inlet side of the tubular membrane component (5) through the lifting pump (6) and the water pipe, the other side of the concentrated water tank is connected with the filter press (12) through a pneumatic diaphragm pump (10) and the water pipe, the water outlet side of the tubular membrane component (5) is connected with the concentrated water tank (4) through the water pipe, one water outlet side of the tubular membrane component (5) is further connected with a cleaning water tank (8) through the water pipe, the cleaning water tank (8) is connected with the water inlet side of the, the bottom of the tubular membrane component (5) is connected with a neutralization pond (7) through a water pipe.

2. The organic tubular membrane waste acid recovery filtration treatment system of claim 1, wherein: a plurality of flocculating agents are added into the first-stage reaction tank (2).

3. The organic tubular membrane waste acid recovery filtration treatment system of claim 1, wherein: and a plurality of NaOH or lime is added into the secondary reaction tank (3).

4. The organic tubular membrane waste acid recovery filtration treatment system of claim 1, wherein: the liquid level meter is arranged in the concentrated water tank (4) and is electrically connected with a lifting pump (6) on one side of the concentrated water tank (4).

5. The organic tubular membrane waste acid recovery filtration treatment system of claim 1, wherein: wash water tank (8) including acid washing jar, alkaline washing jar and fresh water jar, the outside of wasing water tank (8) is equipped with the washing valve door.

6. The organic tubular membrane waste acid recovery filtration treatment system of claim 1, wherein: the filter press (12) is a plate and frame filter press, a sludge concentration tank (11) is further arranged on one side of the filter press, and the top and the bottom of the sludge concentration tank (11) are respectively connected with the concentration water tank (4) and the filter press (12) through pipelines.

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